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/* Implementation of GUI terminal on the Microsoft Windows API.
Copyright (C) 1989, 1993-2015 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <signal.h>
#include <stdio.h>
#include "lisp.h"
#include "blockinput.h"
#include "w32term.h"
#include "systty.h"
#include "systime.h"
#include <ctype.h>
#include <errno.h>
#include <sys/stat.h>
#include <imm.h>
#include "charset.h"
#include "character.h"
#include "coding.h"
#include "ccl.h"
#include "frame.h"
#include "dispextern.h"
#include "fontset.h"
#include "termhooks.h"
#include "termopts.h"
#include "termchar.h"
#include "disptab.h"
#include "buffer.h"
#include "window.h"
#include "keyboard.h"
#include "intervals.h"
#include "process.h"
#include "atimer.h"
#include "keymap.h"
#ifdef WINDOWSNT
#include "w32.h" /* for filename_from_utf16, filename_from_ansi */
#include "w32heap.h"
#endif
#ifndef WINDOWSNT
#include <io.h> /* for get_osfhandle */
#endif
#include <shellapi.h>
#include "font.h"
#include "w32font.h"
/* Fringe bitmaps. */
static int max_fringe_bmp = 0;
static HBITMAP *fringe_bmp = 0;
/* Temporary variables for w32_read_socket. */
static int last_mousemove_x = 0;
static int last_mousemove_y = 0;
/* Define GET_WHEEL_DELTA_WPARAM macro if system headers don't. */
#ifndef GET_WHEEL_DELTA_WPARAM
#define GET_WHEEL_DELTA_WPARAM(wparam) ((short)HIWORD (wparam))
#endif
/* Non-zero means that a HELP_EVENT has been generated since Emacs
start. */
static int any_help_event_p;
extern unsigned int msh_mousewheel;
extern void free_frame_menubar (struct frame *);
extern int w32_codepage_for_font (char *fontname);
extern Cursor w32_load_cursor (LPCTSTR name);
#define x_any_window_to_frame x_window_to_frame
#define x_top_window_to_frame x_window_to_frame
/* This is display since w32 does not support multiple ones. */
struct w32_display_info one_w32_display_info;
struct w32_display_info *x_display_list;
#if _WIN32_WINNT < 0x0500 && !defined(MINGW_W64)
/* Pre Windows 2000, this was not available, but define it here so
that Emacs compiled on such a platform will run on newer versions.
MinGW64 defines these unconditionally, so avoid redefining. */
typedef struct tagWCRANGE
{
WCHAR wcLow;
USHORT cGlyphs;
} WCRANGE;
typedef struct tagGLYPHSET
{
DWORD cbThis;
DWORD flAccel;
DWORD cGlyphsSupported;
DWORD cRanges;
WCRANGE ranges[1];
} GLYPHSET;
#endif /* compiling for pre-Win2k */
/* Dynamic linking to SetLayeredWindowAttribute (only since 2000). */
BOOL (WINAPI *pfnSetLayeredWindowAttributes) (HWND, COLORREF, BYTE, DWORD);
#ifndef LWA_ALPHA
#define LWA_ALPHA 0x02
#endif
/* WS_EX_LAYERED is defined unconditionally by MingW, but only for W2K and
later targets by MSVC headers. */
#ifndef WS_EX_LAYERED
#define WS_EX_LAYERED 0x80000
#endif
/* SM_CXVIRTUALSCREEN and SM_CYVIRTUALSCREEN are not defined on 95 and
NT4. */
#ifndef SM_CXVIRTUALSCREEN
#define SM_CXVIRTUALSCREEN 78
#endif
#ifndef SM_CYVIRTUALSCREEN
#define SM_CYVIRTUALSCREEN 79
#endif
/* The handle of the frame that currently owns the system caret. */
HWND w32_system_caret_hwnd;
int w32_system_caret_height;
int w32_system_caret_x;
int w32_system_caret_y;
struct window *w32_system_caret_window;
int w32_system_caret_hdr_height;
int w32_system_caret_mode_height;
DWORD dwWindowsThreadId = 0;
HANDLE hWindowsThread = NULL;
DWORD dwMainThreadId = 0;
HANDLE hMainThread = NULL;
int vertical_scroll_bar_min_handle;
int vertical_scroll_bar_top_border;
int vertical_scroll_bar_bottom_border;
int last_scroll_bar_drag_pos;
/* Keyboard code page - may be changed by language-change events. */
int w32_keyboard_codepage;
/* Incremented by w32_read_socket whenever it really tries to read
events. */
static int volatile input_signal_count;
#ifdef CYGWIN
int w32_message_fd = -1;
#endif /* CYGWIN */
static void w32_handle_tool_bar_click (struct frame *,
struct input_event *);
static void w32_define_cursor (Window, Cursor);
void x_lower_frame (struct frame *);
void x_scroll_bar_clear (struct frame *);
void x_wm_set_size_hint (struct frame *, long, bool);
void x_raise_frame (struct frame *);
void x_set_window_size (struct frame *, int, int, int, bool);
void x_wm_set_window_state (struct frame *, int);
void x_wm_set_icon_pixmap (struct frame *, int);
static void w32_initialize (void);
static void x_update_end (struct frame *);
static void w32_frame_up_to_date (struct frame *);
static void x_clear_frame (struct frame *);
static void frame_highlight (struct frame *);
static void frame_unhighlight (struct frame *);
static void x_new_focus_frame (struct w32_display_info *,
struct frame *);
static void x_focus_changed (int, int, struct w32_display_info *,
struct frame *, struct input_event *);
static void w32_detect_focus_change (struct w32_display_info *,
W32Msg *, struct input_event *);
static void w32_frame_rehighlight (struct frame *);
static void x_frame_rehighlight (struct w32_display_info *);
static void x_draw_hollow_cursor (struct window *, struct glyph_row *);
static void x_draw_bar_cursor (struct window *, struct glyph_row *, int,
enum text_cursor_kinds);
static void w32_clip_to_row (struct window *, struct glyph_row *,
enum glyph_row_area, HDC);
static BOOL my_show_window (struct frame *, HWND, int);
static void my_set_window_pos (HWND, HWND, int, int, int, int, UINT);
#if 0
static void my_set_focus (struct frame *, HWND);
#endif
static void my_set_foreground_window (HWND);
static void my_destroy_window (struct frame *, HWND);
static void w32fullscreen_hook (struct frame *);
#ifdef GLYPH_DEBUG
static void x_check_font (struct frame *, struct font *);
#endif
static Lisp_Object Qvendor_specific_keysyms;
static Lisp_Object Qadded, Qremoved, Qmodified;
static Lisp_Object Qrenamed_from, Qrenamed_to;
/***********************************************************************
Debugging
***********************************************************************/
#if 0
/* This is a function useful for recording debugging information about
the sequence of occurrences in this file. */
struct record
{
char *locus;
int type;
};
struct record event_record[100];
int event_record_index;
record_event (char *locus, int type)
{
if (event_record_index == sizeof (event_record) / sizeof (struct record))
event_record_index = 0;
event_record[event_record_index].locus = locus;
event_record[event_record_index].type = type;
event_record_index++;
}
#endif /* 0 */
void
XChangeGC (void *ignore, XGCValues *gc, unsigned long mask,
XGCValues *xgcv)
{
if (mask & GCForeground)
gc->foreground = xgcv->foreground;
if (mask & GCBackground)
gc->background = xgcv->background;
if (mask & GCFont)
gc->font = xgcv->font;
}
XGCValues *
XCreateGC (void *ignore, Window window, unsigned long mask, XGCValues *xgcv)
{
XGCValues *gc = xzalloc (sizeof (XGCValues));
XChangeGC (ignore, gc, mask, xgcv);
return gc;
}
void
XGetGCValues (void *ignore, XGCValues *gc,
unsigned long mask, XGCValues *xgcv)
{
XChangeGC (ignore, xgcv, mask, gc);
}
static void
w32_set_clip_rectangle (HDC hdc, RECT *rect)
{
if (rect)
{
HRGN clip_region = CreateRectRgnIndirect (rect);
SelectClipRgn (hdc, clip_region);
DeleteObject (clip_region);
}
else
SelectClipRgn (hdc, NULL);
}
/* Restore clipping rectangle in S */
static void
w32_restore_glyph_string_clip (struct glyph_string *s)
{
RECT *r = s->clip;
int n = s->num_clips;
if (n == 1)
w32_set_clip_rectangle (s->hdc, r);
else if (n > 1)
{
HRGN clip1 = CreateRectRgnIndirect (r);
HRGN clip2 = CreateRectRgnIndirect (r + 1);
if (CombineRgn (clip1, clip1, clip2, RGN_OR) != ERROR)
SelectClipRgn (s->hdc, clip1);
DeleteObject (clip1);
DeleteObject (clip2);
}
}
/*
Draw a wavy line under S. The wave fills wave_height pixels from y0.
x0 wave_length = 2
--
y0 * * * * *
|* * * * * * * * *
wave_height = 3 | * * * *
*/
void
w32_draw_underwave (struct glyph_string *s, COLORREF color)
{
int wave_height = 3, wave_length = 2;
int dx, dy, x0, y0, width, x1, y1, x2, y2, odd, xmax;
XRectangle wave_clip, string_clip, final_clip;
RECT w32_final_clip, w32_string_clip;
HPEN hp, oldhp;
dx = wave_length;
dy = wave_height - 1;
x0 = s->x;
y0 = s->ybase - wave_height + 3;
width = s->width;
xmax = x0 + width;
/* Find and set clipping rectangle */
wave_clip.x = x0;
wave_clip.y = y0;
wave_clip.width = width;
wave_clip.height = wave_height;
get_glyph_string_clip_rect (s, &w32_string_clip);
CONVERT_TO_XRECT (string_clip, w32_string_clip);
if (!x_intersect_rectangles (&wave_clip, &string_clip, &final_clip))
return;
hp = CreatePen (PS_SOLID, 0, color);
oldhp = SelectObject (s->hdc, hp);
CONVERT_FROM_XRECT (final_clip, w32_final_clip);
w32_set_clip_rectangle (s->hdc, &w32_final_clip);
/* Draw the waves */
x1 = x0 - (x0 % dx);
x2 = x1 + dx;
odd = (x1/dx) % 2;
y1 = y2 = y0;
if (odd)
y1 += dy;
else
y2 += dy;
MoveToEx (s->hdc, x1, y1, NULL);
while (x1 <= xmax)
{
LineTo (s->hdc, x2, y2);
x1 = x2, y1 = y2;
x2 += dx, y2 = y0 + odd*dy;
odd = !odd;
}
/* Restore previous pen and clipping rectangle(s) */
w32_restore_glyph_string_clip (s);
SelectObject (s->hdc, oldhp);
DeleteObject (hp);
}
/* Draw a hollow rectangle at the specified position. */
void
w32_draw_rectangle (HDC hdc, XGCValues *gc, int x, int y,
int width, int height)
{
HBRUSH hb, oldhb;
HPEN hp, oldhp;
hb = CreateSolidBrush (gc->background);
hp = CreatePen (PS_SOLID, 0, gc->foreground);
oldhb = SelectObject (hdc, hb);
oldhp = SelectObject (hdc, hp);
Rectangle (hdc, x, y, x + width, y + height);
SelectObject (hdc, oldhb);
SelectObject (hdc, oldhp);
DeleteObject (hb);
DeleteObject (hp);
}
/* Draw a filled rectangle at the specified position. */
void
w32_fill_rect (struct frame *f, HDC hdc, COLORREF pix, RECT *lprect)
{
HBRUSH hb;
hb = CreateSolidBrush (pix);
FillRect (hdc, lprect, hb);
DeleteObject (hb);
}
void
w32_clear_window (struct frame *f)
{
RECT rect;
HDC hdc = get_frame_dc (f);
/* Under certain conditions, this can be called at startup with
a console frame pointer before the GUI frame is created. An HDC
of 0 indicates this. */
if (hdc)
{
GetClientRect (FRAME_W32_WINDOW (f), &rect);
w32_clear_rect (f, hdc, &rect);
}
release_frame_dc (f, hdc);
}
#define OPAQUE_FRAME 255
void
x_set_frame_alpha (struct frame *f)
{
struct w32_display_info *dpyinfo = FRAME_DISPLAY_INFO (f);
double alpha = 1.0;
double alpha_min = 1.0;
BYTE opac;
LONG ex_style;
HWND window = FRAME_W32_WINDOW (f);
/* Older versions of Windows do not support transparency. */
if (!pfnSetLayeredWindowAttributes)
return;
if (dpyinfo->x_highlight_frame == f)
alpha = f->alpha[0];
else
alpha = f->alpha[1];
if (FLOATP (Vframe_alpha_lower_limit))
alpha_min = XFLOAT_DATA (Vframe_alpha_lower_limit);
else if (INTEGERP (Vframe_alpha_lower_limit))
alpha_min = (XINT (Vframe_alpha_lower_limit)) / 100.0;
if (alpha < 0.0)
return;
else if (alpha > 1.0)
alpha = 1.0;
else if (alpha < alpha_min && alpha_min <= 1.0)
alpha = alpha_min;
opac = alpha * OPAQUE_FRAME;
ex_style = GetWindowLong (window, GWL_EXSTYLE);
if (opac == OPAQUE_FRAME)
ex_style &= ~WS_EX_LAYERED;
else
ex_style |= WS_EX_LAYERED;
SetWindowLong (window, GWL_EXSTYLE, ex_style);
if (opac != OPAQUE_FRAME)
pfnSetLayeredWindowAttributes (window, 0, opac, LWA_ALPHA);
}
int
x_display_pixel_height (struct w32_display_info *dpyinfo)
{
int pixels = GetSystemMetrics (SM_CYVIRTUALSCREEN);
if (pixels == 0)
/* Fallback for Windows 95 or NT 4.0. */
pixels = GetSystemMetrics (SM_CYSCREEN);
return pixels;
}
int
x_display_pixel_width (struct w32_display_info *dpyinfo)
{
int pixels = GetSystemMetrics (SM_CXVIRTUALSCREEN);
if (pixels == 0)
/* Fallback for Windows 95 or NT 4.0. */
pixels = GetSystemMetrics (SM_CXSCREEN);
return pixels;
}
/***********************************************************************
Starting and ending an update
***********************************************************************/
/* Start an update of frame F. This function is installed as a hook
for update_begin, i.e. it is called when update_begin is called.
This function is called prior to calls to x_update_window_begin for
each window being updated. */
static void
x_update_begin (struct frame *f)
{
struct w32_display_info *display_info = FRAME_DISPLAY_INFO (f);
if (! FRAME_W32_P (f))
return;
/* Regenerate display palette before drawing if list of requested
colors has changed. */
if (display_info->regen_palette)
{
w32_regenerate_palette (f);
display_info->regen_palette = FALSE;
}
}
/* Start update of window W. */
static void
x_update_window_begin (struct window *w)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
/* Hide the system caret during an update. */
if (w32_use_visible_system_caret && w32_system_caret_hwnd)
{
SendMessage (w32_system_caret_hwnd, WM_EMACS_HIDE_CARET, 0, 0);
}
w->output_cursor = w->cursor;
block_input ();
if (f == hlinfo->mouse_face_mouse_frame)
{
/* Don't do highlighting for mouse motion during the update. */
hlinfo->mouse_face_defer = 1;
/* If F needs to be redrawn, simply forget about any prior mouse
highlighting. */
if (FRAME_GARBAGED_P (f))
hlinfo->mouse_face_window = Qnil;
#if 0 /* Rows in a current matrix containing glyphs in mouse-face have
their mouse_face_p flag set, which means that they are always
unequal to rows in a desired matrix which never have that
flag set. So, rows containing mouse-face glyphs are never
scrolled, and we don't have to switch the mouse highlight off
here to prevent it from being scrolled. */
/* Can we tell that this update does not affect the window
where the mouse highlight is? If so, no need to turn off.
Likewise, don't do anything if the frame is garbaged;
in that case, the frame's current matrix that we would use
is all wrong, and we will redisplay that line anyway. */
if (!NILP (hlinfo->mouse_face_window)
&& w == XWINDOW (hlinfo->mouse_face_window))
{
int i;
for (i = 0; i < w->desired_matrix->nrows; ++i)
if (MATRIX_ROW_ENABLED_P (w->desired_matrix, i))
break;
if (i < w->desired_matrix->nrows)
clear_mouse_face (hlinfo);
}
#endif /* 0 */
}
unblock_input ();
}
/* Draw a vertical window border from (x,y0) to (x,y1) */
static void
w32_draw_vertical_window_border (struct window *w, int x, int y0, int y1)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
RECT r;
HDC hdc;
struct face *face;
r.left = x;
r.right = x + 1;
r.top = y0;
r.bottom = y1;
hdc = get_frame_dc (f);
face = FACE_FROM_ID (f, VERTICAL_BORDER_FACE_ID);
if (face)
w32_fill_rect (f, hdc, face->foreground, &r);
else
w32_fill_rect (f, hdc, FRAME_FOREGROUND_PIXEL (f), &r);
release_frame_dc (f, hdc);
}
/* Draw a window divider from (x0, y0) to (x1, y1) */
static void
w32_draw_window_divider (struct window *w, int x0, int x1, int y0, int y1)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
HDC hdc = get_frame_dc (f);
struct face *face = FACE_FROM_ID (f, WINDOW_DIVIDER_FACE_ID);
struct face *face_first = FACE_FROM_ID (f, WINDOW_DIVIDER_FIRST_PIXEL_FACE_ID);
struct face *face_last = FACE_FROM_ID (f, WINDOW_DIVIDER_LAST_PIXEL_FACE_ID);
unsigned long color = face ? face->foreground : FRAME_FOREGROUND_PIXEL (f);
unsigned long color_first = (face_first
? face_first->foreground
: FRAME_FOREGROUND_PIXEL (f));
unsigned long color_last = (face_last
? face_last->foreground
: FRAME_FOREGROUND_PIXEL (f));
if (y1 - y0 > x1 - x0 && x1 - x0 > 2)
/* Vertical. */
{
w32_fill_area_abs (f, hdc, color_first, x0, y0, x0 + 1, y1);
w32_fill_area_abs (f, hdc, color, x0 + 1, y0, x1 - 1, y1);
w32_fill_area_abs (f, hdc, color_last, x1 - 1, y0, x1, y1);
}
else if (x1 - x0 > y1 - y0 && y1 - y0 > 3)
/* Horizontal. */
{
w32_fill_area_abs (f, hdc, color_first, x0, y0, x1, y0 + 1);
w32_fill_area_abs (f, hdc, color, x0, y0 + 1, x1, y1 - 1);
w32_fill_area_abs (f, hdc, color_last, x0, y1 - 1, x1, y1);
}
else
w32_fill_area_abs (f, hdc, color, x0, y0, x1, y1);
release_frame_dc (f, hdc);
}
/* End update of window W.
Draw vertical borders between horizontally adjacent windows, and
display W's cursor if CURSOR_ON_P is non-zero.
MOUSE_FACE_OVERWRITTEN_P non-zero means that some row containing
glyphs in mouse-face were overwritten. In that case we have to
make sure that the mouse-highlight is properly redrawn.
W may be a menu bar pseudo-window in case we don't have X toolkit
support. Such windows don't have a cursor, so don't display it
here. */
static void
x_update_window_end (struct window *w, bool cursor_on_p,
bool mouse_face_overwritten_p)
{
if (!w->pseudo_window_p)
{
block_input ();
if (cursor_on_p)
display_and_set_cursor (w, 1,
w->output_cursor.hpos, w->output_cursor.vpos,
w->output_cursor.x, w->output_cursor.y);
if (draw_window_fringes (w, 1))
{
if (WINDOW_RIGHT_DIVIDER_WIDTH (w))
x_draw_right_divider (w);
else
x_draw_vertical_border (w);
}
unblock_input ();
}
/* If a row with mouse-face was overwritten, arrange for
XTframe_up_to_date to redisplay the mouse highlight. */
if (mouse_face_overwritten_p)
{
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (XFRAME (w->frame));
hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1;
hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1;
hlinfo->mouse_face_window = Qnil;
}
/* Unhide the caret. This won't actually show the cursor, unless it
was visible before the corresponding call to HideCaret in
x_update_window_begin. */
if (w32_use_visible_system_caret && w32_system_caret_hwnd)
{
SendMessage (w32_system_caret_hwnd, WM_EMACS_SHOW_CARET, 0, 0);
}
}
/* End update of frame F. This function is installed as a hook in
update_end. */
static void
x_update_end (struct frame *f)
{
if (! FRAME_W32_P (f))
return;
/* Mouse highlight may be displayed again. */
MOUSE_HL_INFO (f)->mouse_face_defer = 0;
}
/* This function is called from various places in xdisp.c
whenever a complete update has been performed. */
static void
w32_frame_up_to_date (struct frame *f)
{
if (FRAME_W32_P (f))
FRAME_MOUSE_UPDATE (f);
}
/* Draw truncation mark bitmaps, continuation mark bitmaps, overlay
arrow bitmaps, or clear the fringes if no bitmaps are required
before DESIRED_ROW is made current. This function is called from
update_window_line only if it is known that there are differences
between bitmaps to be drawn between current row and DESIRED_ROW. */
static void
x_after_update_window_line (struct window *w, struct glyph_row *desired_row)
{
struct frame *f;
int width, height;
eassert (w);
if (!desired_row->mode_line_p && !w->pseudo_window_p)
desired_row->redraw_fringe_bitmaps_p = 1;
/* When a window has disappeared, make sure that no rest of
full-width rows stays visible in the internal border. Could
check here if updated window is the leftmost/rightmost window,
but I guess it's not worth doing since vertically split windows
are almost never used, internal border is rarely set, and the
overhead is very small. */
if (windows_or_buffers_changed
&& desired_row->full_width_p
&& (f = XFRAME (w->frame),
width = FRAME_INTERNAL_BORDER_WIDTH (f),
width != 0)
&& (height = desired_row->visible_height,
height > 0))
{
int y = WINDOW_TO_FRAME_PIXEL_Y (w, max (0, desired_row->y));
block_input ();
{
HDC hdc = get_frame_dc (f);
w32_clear_area (f, hdc, 0, y, width, height);
w32_clear_area (f, hdc, FRAME_PIXEL_WIDTH (f) - width,
y, width, height);
release_frame_dc (f, hdc);
}
unblock_input ();
}
}
/* Draw the bitmap WHICH in one of the left or right fringes of
window W. ROW is the glyph row for which to display the bitmap; it
determines the vertical position at which the bitmap has to be
drawn. */
static void
w32_draw_fringe_bitmap (struct window *w, struct glyph_row *row,
struct draw_fringe_bitmap_params *p)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
HDC hdc;
struct face *face = p->face;
hdc = get_frame_dc (f);
/* Must clip because of partially visible lines. */
w32_clip_to_row (w, row, ANY_AREA, hdc);
if (p->bx >= 0 && !p->overlay_p)
w32_fill_area (f, hdc, face->background,
p->bx, p->by, p->nx, p->ny);
if (p->which && p->which < max_fringe_bmp)
{
HBITMAP pixmap = fringe_bmp[p->which];
HDC compat_hdc;
HANDLE horig_obj;
compat_hdc = CreateCompatibleDC (hdc);
SaveDC (hdc);
horig_obj = SelectObject (compat_hdc, pixmap);
/* Paint overlays transparently. */
if (p->overlay_p)
{
HBRUSH h_brush, h_orig_brush;
SetTextColor (hdc, BLACK_PIX_DEFAULT (f));
SetBkColor (hdc, WHITE_PIX_DEFAULT (f));
h_brush = CreateSolidBrush (face->foreground);
h_orig_brush = SelectObject (hdc, h_brush);
BitBlt (hdc, p->x, p->y, p->wd, p->h,
compat_hdc, 0, p->dh,
DSTINVERT);
BitBlt (hdc, p->x, p->y, p->wd, p->h,
compat_hdc, 0, p->dh,
0x2E064A);
BitBlt (hdc, p->x, p->y, p->wd, p->h,
compat_hdc, 0, p->dh,
DSTINVERT);
SelectObject (hdc, h_orig_brush);
DeleteObject (h_brush);
}
else
{
SetTextColor (hdc, face->background);
SetBkColor (hdc, (p->cursor_p
? f->output_data.w32->cursor_pixel
: face->foreground));
BitBlt (hdc, p->x, p->y, p->wd, p->h,
compat_hdc, 0, p->dh,
SRCCOPY);
}
SelectObject (compat_hdc, horig_obj);
DeleteDC (compat_hdc);
RestoreDC (hdc, -1);
}
w32_set_clip_rectangle (hdc, NULL);
release_frame_dc (f, hdc);
}
static void
w32_define_fringe_bitmap (int which, unsigned short *bits, int h, int wd)
{
if (which >= max_fringe_bmp)
{
int i = max_fringe_bmp;
max_fringe_bmp = which + 20;
fringe_bmp = (HBITMAP *) xrealloc (fringe_bmp, max_fringe_bmp * sizeof (HBITMAP));
while (i < max_fringe_bmp)
fringe_bmp[i++] = 0;
}
fringe_bmp[which] = CreateBitmap (wd, h, 1, 1, bits);
}
static void
w32_destroy_fringe_bitmap (int which)
{
if (which >= max_fringe_bmp)
return;
if (fringe_bmp[which])
DeleteObject (fringe_bmp[which]);
fringe_bmp[which] = 0;
}
/***********************************************************************
Display Iterator
***********************************************************************/
/* Function prototypes of this page. */
static void x_set_glyph_string_clipping (struct glyph_string *);
static void x_set_glyph_string_gc (struct glyph_string *);
static void x_draw_glyph_string_background (struct glyph_string *,
int);
static void x_draw_glyph_string_foreground (struct glyph_string *);
static void x_draw_composite_glyph_string_foreground (struct glyph_string *);
static void x_draw_glyph_string_box (struct glyph_string *);
static void x_draw_glyph_string (struct glyph_string *);
static void x_set_cursor_gc (struct glyph_string *);
static void x_set_mode_line_face_gc (struct glyph_string *);
static void x_set_mouse_face_gc (struct glyph_string *);
static int w32_alloc_lighter_color (struct frame *, COLORREF *, double, int);
static void w32_setup_relief_color (struct frame *, struct relief *,
double, int, COLORREF);
static void x_setup_relief_colors (struct glyph_string *);
static void x_draw_image_glyph_string (struct glyph_string *);
static void x_draw_image_relief (struct glyph_string *);
static void x_draw_image_foreground (struct glyph_string *);
static void w32_draw_image_foreground_1 (struct glyph_string *, HBITMAP);
static void x_clear_glyph_string_rect (struct glyph_string *, int,
int, int, int);
static void w32_draw_relief_rect (struct frame *, int, int, int, int,
int, int, int, int, int, int,
RECT *);
static void w32_draw_box_rect (struct glyph_string *, int, int, int, int,
int, int, int, RECT *);
/* Set S->gc to a suitable GC for drawing glyph string S in cursor
face. */
static void
x_set_cursor_gc (struct glyph_string *s)
{
if (s->font == FRAME_FONT (s->f)
&& s->face->background == FRAME_BACKGROUND_PIXEL (s->f)
&& s->face->foreground == FRAME_FOREGROUND_PIXEL (s->f)
&& !s->cmp)
s->gc = s->f->output_data.w32->cursor_gc;
else
{
/* Cursor on non-default face: must merge. */
XGCValues xgcv;
unsigned long mask;
xgcv.background = s->f->output_data.w32->cursor_pixel;
xgcv.foreground = s->face->background;
/* If the glyph would be invisible, try a different foreground. */
if (xgcv.foreground == xgcv.background)
xgcv.foreground = s->face->foreground;
if (xgcv.foreground == xgcv.background)
xgcv.foreground = s->f->output_data.w32->cursor_foreground_pixel;
if (xgcv.foreground == xgcv.background)
xgcv.foreground = s->face->foreground;
/* Make sure the cursor is distinct from text in this face. */
if (xgcv.background == s->face->background
&& xgcv.foreground == s->face->foreground)
{
xgcv.background = s->face->foreground;
xgcv.foreground = s->face->background;
}
IF_DEBUG (x_check_font (s->f, s->font));
xgcv.font = s->font;
mask = GCForeground | GCBackground | GCFont;
if (FRAME_DISPLAY_INFO (s->f)->scratch_cursor_gc)
XChangeGC (NULL, FRAME_DISPLAY_INFO (s->f)->scratch_cursor_gc,
mask, &xgcv);
else
FRAME_DISPLAY_INFO (s->f)->scratch_cursor_gc
= XCreateGC (NULL, s->window, mask, &xgcv);
s->gc = FRAME_DISPLAY_INFO (s->f)->scratch_cursor_gc;
}
}
/* Set up S->gc of glyph string S for drawing text in mouse face. */
static void
x_set_mouse_face_gc (struct glyph_string *s)
{
int face_id;
struct face *face;
/* What face has to be used last for the mouse face? */
face_id = MOUSE_HL_INFO (s->f)->mouse_face_face_id;
face = FACE_FROM_ID (s->f, face_id);
if (face == NULL)
face = FACE_FROM_ID (s->f, MOUSE_FACE_ID);
if (s->first_glyph->type == CHAR_GLYPH)
face_id = FACE_FOR_CHAR (s->f, face, s->first_glyph->u.ch, -1, Qnil);
else
face_id = FACE_FOR_CHAR (s->f, face, 0, -1, Qnil);
s->face = FACE_FROM_ID (s->f, face_id);
PREPARE_FACE_FOR_DISPLAY (s->f, s->face);
/* If font in this face is same as S->font, use it. */
if (s->font == s->face->font)
s->gc = s->face->gc;
else
{
/* Otherwise construct scratch_cursor_gc with values from FACE
but font FONT. */
XGCValues xgcv;
unsigned long mask;
xgcv.background = s->face->background;
xgcv.foreground = s->face->foreground;
IF_DEBUG (x_check_font (s->f, s->font));
xgcv.font = s->font;
mask = GCForeground | GCBackground | GCFont;
if (FRAME_DISPLAY_INFO (s->f)->scratch_cursor_gc)
XChangeGC (NULL, FRAME_DISPLAY_INFO (s->f)->scratch_cursor_gc,
mask, &xgcv);
else
FRAME_DISPLAY_INFO (s->f)->scratch_cursor_gc
= XCreateGC (NULL, s->window, mask, &xgcv);
s->gc = FRAME_DISPLAY_INFO (s->f)->scratch_cursor_gc;
}
eassert (s->gc != 0);
}
/* Set S->gc of glyph string S to a GC suitable for drawing a mode line.
Faces to use in the mode line have already been computed when the
matrix was built, so there isn't much to do, here. */
static inline void
x_set_mode_line_face_gc (struct glyph_string *s)
{
s->gc = s->face->gc;
}
/* Set S->gc of glyph string S for drawing that glyph string. Set
S->stippled_p to a non-zero value if the face of S has a stipple
pattern. */
static inline void
x_set_glyph_string_gc (struct glyph_string *s)
{
PREPARE_FACE_FOR_DISPLAY (s->f, s->face);
if (s->hl == DRAW_NORMAL_TEXT)
{
s->gc = s->face->gc;
s->stippled_p = s->face->stipple != 0;
}
else if (s->hl == DRAW_INVERSE_VIDEO)
{
x_set_mode_line_face_gc (s);
s->stippled_p = s->face->stipple != 0;
}
else if (s->hl == DRAW_CURSOR)
{
x_set_cursor_gc (s);
s->stippled_p = 0;
}
else if (s->hl == DRAW_MOUSE_FACE)
{
x_set_mouse_face_gc (s);
s->stippled_p = s->face->stipple != 0;
}
else if (s->hl == DRAW_IMAGE_RAISED
|| s->hl == DRAW_IMAGE_SUNKEN)
{
s->gc = s->face->gc;
s->stippled_p = s->face->stipple != 0;
}
else
{
s->gc = s->face->gc;
s->stippled_p = s->face->stipple != 0;
}
/* GC must have been set. */
eassert (s->gc != 0);
}
/* Set clipping for output of glyph string S. S may be part of a mode
line or menu if we don't have X toolkit support. */
static inline void
x_set_glyph_string_clipping (struct glyph_string *s)
{
RECT *r = s->clip;
int n = get_glyph_string_clip_rects (s, r, 2);
if (n == 1)
w32_set_clip_rectangle (s->hdc, r);
else if (n > 1)
{
HRGN clip1 = CreateRectRgnIndirect (r);
HRGN clip2 = CreateRectRgnIndirect (r + 1);
if (CombineRgn (clip1, clip1, clip2, RGN_OR) != ERROR)
SelectClipRgn (s->hdc, clip1);
DeleteObject (clip1);
DeleteObject (clip2);
}
s->num_clips = n;
}
/* Set SRC's clipping for output of glyph string DST. This is called
when we are drawing DST's left_overhang or right_overhang only in
the area of SRC. */
static void
x_set_glyph_string_clipping_exactly (struct glyph_string *src,
struct glyph_string *dst)
{
RECT r;
r.left = src->x;
r.right = r.left + src->width;
r.top = src->y;
r.bottom = r.top + src->height;
dst->clip[0] = r;
dst->num_clips = 1;
w32_set_clip_rectangle (dst->hdc, &r);
}
/* RIF:
Compute left and right overhang of glyph string S. */
static void
w32_compute_glyph_string_overhangs (struct glyph_string *s)
{
if (s->cmp == NULL
&& s->first_glyph->type == CHAR_GLYPH
&& !s->font_not_found_p)
{
unsigned *code = alloca (sizeof (unsigned) * s->nchars);
struct font *font = s->font;
struct font_metrics metrics;
int i;
for (i = 0; i < s->nchars; i++)
code[i] = s->char2b[i];
font->driver->text_extents (font, code, s->nchars, &metrics);
s->right_overhang = (metrics.rbearing > metrics.width
? metrics.rbearing - metrics.width : 0);
s->left_overhang = metrics.lbearing < 0 ? -metrics.lbearing : 0;
}
else if (s->cmp)
{
s->right_overhang = s->cmp->rbearing - s->cmp->pixel_width;
s->left_overhang = -s->cmp->lbearing;
}
}
/* Fill rectangle X, Y, W, H with background color of glyph string S. */
static inline void
x_clear_glyph_string_rect (struct glyph_string *s,
int x, int y, int w, int h)
{
int real_x = x;
int real_y = y;
int real_w = w;
int real_h = h;
#if 0
/* Take clipping into account. */
if (s->gc->clip_mask == Rect)
{
real_x = max (real_x, s->gc->clip_rectangle.left);
real_y = max (real_y, s->gc->clip_rectangle.top);
real_w = min (real_w, s->gc->clip_rectangle.right
- s->gc->clip_rectangle.left);
real_h = min (real_h, s->gc->clip_rectangle.bottom
- s->gc->clip_rectangle.top);
}
#endif
w32_fill_area (s->f, s->hdc, s->gc->background, real_x, real_y,
real_w, real_h);
}
/* Draw the background of glyph_string S. If S->background_filled_p
is non-zero don't draw it. FORCE_P non-zero means draw the
background even if it wouldn't be drawn normally. This is used
when a string preceding S draws into the background of S, or S
contains the first component of a composition. */
static void
x_draw_glyph_string_background (struct glyph_string *s, int force_p)
{
/* Nothing to do if background has already been drawn or if it
shouldn't be drawn in the first place. */
if (!s->background_filled_p)
{
int box_line_width = max (s->face->box_line_width, 0);
#if 0 /* TODO: stipple */
if (s->stippled_p)
{
/* Fill background with a stipple pattern. */
XSetFillStyle (s->display, s->gc, FillOpaqueStippled);
XFillRectangle (s->display, s->window, s->gc, s->x,
s->y + box_line_width,
s->background_width,
s->height - 2 * box_line_width);
XSetFillStyle (s->display, s->gc, FillSolid);
s->background_filled_p = 1;
}
else
#endif
if (FONT_HEIGHT (s->font) < s->height - 2 * box_line_width
|| s->font_not_found_p
|| s->extends_to_end_of_line_p
|| force_p)
{
x_clear_glyph_string_rect (s, s->x, s->y + box_line_width,
s->background_width,
s->height - 2 * box_line_width);
s->background_filled_p = 1;
}
}
}
/* Draw the foreground of glyph string S. */
static void
x_draw_glyph_string_foreground (struct glyph_string *s)
{
int i, x;
/* If first glyph of S has a left box line, start drawing the text
of S to the right of that box line. */
if (s->face->box != FACE_NO_BOX
&& s->first_glyph->left_box_line_p)
x = s->x + eabs (s->face->box_line_width);
else
x = s->x;
SetTextColor (s->hdc, s->gc->foreground);
SetBkColor (s->hdc, s->gc->background);
SetTextAlign (s->hdc, TA_BASELINE | TA_LEFT);
/* Draw characters of S as rectangles if S's font could not be
loaded. */
if (s->font_not_found_p)
{
for (i = 0; i < s->nchars; ++i)
{
struct glyph *g = s->first_glyph + i;
w32_draw_rectangle (s->hdc, s->gc, x, s->y, g->pixel_width - 1,
s->height - 1);
x += g->pixel_width;
}
}
else
{
struct font *font = s->font;
int boff = font->baseline_offset;
int y;
HFONT old_font;
old_font = SelectObject (s->hdc, FONT_HANDLE (font));
if (font->vertical_centering)
boff = VCENTER_BASELINE_OFFSET (font, s->f) - boff;
y = s->ybase - boff;
if (s->for_overlaps
|| (s->background_filled_p && s->hl != DRAW_CURSOR))
font->driver->draw (s, 0, s->nchars, x, y, 0);
else
font->driver->draw (s, 0, s->nchars, x, y, 1);
if (s->face->overstrike)
font->driver->draw (s, 0, s->nchars, x + 1, y, 0);
SelectObject (s->hdc, old_font);
}
}
/* Draw the foreground of composite glyph string S. */
static void
x_draw_composite_glyph_string_foreground (struct glyph_string *s)
{
int i, j, x;
struct font *font = s->font;
/* If first glyph of S has a left box line, start drawing the text
of S to the right of that box line. */
if (s->face && s->face->box != FACE_NO_BOX
&& s->first_glyph->left_box_line_p)
x = s->x + eabs (s->face->box_line_width);
else
x = s->x;
/* S is a glyph string for a composition. S->cmp_from is the index
of the first character drawn for glyphs of this composition.
S->cmp_from == 0 means we are drawing the very first character of
this composition. */
SetTextColor (s->hdc, s->gc->foreground);
SetBkColor (s->hdc, s->gc->background);
SetTextAlign (s->hdc, TA_BASELINE | TA_LEFT);
/* Draw a rectangle for the composition if the font for the very
first character of the composition could not be loaded. */
if (s->font_not_found_p)
{
if (s->cmp_from == 0)
w32_draw_rectangle (s->hdc, s->gc, x, s->y, s->width - 1,
s->height - 1);
}
else if (! s->first_glyph->u.cmp.automatic)
{
int y = s->ybase;
HFONT old_font;
old_font = SelectObject (s->hdc, FONT_HANDLE (font));
for (i = 0, j = s->cmp_from; i < s->nchars; i++, j++)
/* TAB in a composition means display glyphs with padding
space on the left or right. */
if (COMPOSITION_GLYPH (s->cmp, j) != '\t')
{
int xx = x + s->cmp->offsets[j * 2];
int yy = y - s->cmp->offsets[j * 2 + 1];
font->driver->draw (s, j, j + 1, xx, yy, 0);
if (s->face->overstrike)
font->driver->draw (s, j, j + 1, xx + 1, yy, 0);
}
SelectObject (s->hdc, old_font);
}
else
{
Lisp_Object gstring = composition_gstring_from_id (s->cmp_id);
Lisp_Object glyph;
int y = s->ybase;
int width = 0;
HFONT old_font;
old_font = SelectObject (s->hdc, FONT_HANDLE (font));
for (i = j = s->cmp_from; i < s->cmp_to; i++)
{
glyph = LGSTRING_GLYPH (gstring, i);
if (NILP (LGLYPH_ADJUSTMENT (glyph)))
width += LGLYPH_WIDTH (glyph);
else
{
int xoff, yoff, wadjust;
if (j < i)
{
font->driver->draw (s, j, i, x, y, 0);
x += width;
}
xoff = LGLYPH_XOFF (glyph);
yoff = LGLYPH_YOFF (glyph);
wadjust = LGLYPH_WADJUST (glyph);
font->driver->draw (s, i, i + 1, x + xoff, y + yoff, 0);
x += wadjust;
j = i + 1;
width = 0;
}
}
if (j < i)
font->driver->draw (s, j, i, x, y, 0);
SelectObject (s->hdc, old_font);
}
}
/* Draw the foreground of glyph string S for glyphless characters. */
static void
x_draw_glyphless_glyph_string_foreground (struct glyph_string *s)
{
struct glyph *glyph = s->first_glyph;
XChar2b char2b[8];
int x, i, j;
int with_background;
/* If first glyph of S has a left box line, start drawing the text
of S to the right of that box line. */
if (s->face->box != FACE_NO_BOX
&& s->first_glyph->left_box_line_p)
x = s->x + eabs (s->face->box_line_width);
else
x = s->x;
SetTextColor (s->hdc, s->gc->foreground);
SetBkColor (s->hdc, s->gc->background);
SetTextAlign (s->hdc, TA_BASELINE | TA_LEFT);
s->char2b = char2b;
with_background = ! (s->for_overlaps
|| (s->background_filled_p && s->hl != DRAW_CURSOR));
for (i = 0; i < s->nchars; i++, glyph++)
{
char buf[7], *str = NULL;
int len = glyph->u.glyphless.len;
if (glyph->u.glyphless.method == GLYPHLESS_DISPLAY_ACRONYM)
{
if (len > 1
&& CHAR_TABLE_P (Vglyphless_char_display)
&& (CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (Vglyphless_char_display))
>= 1))
{
Lisp_Object acronym
= (! glyph->u.glyphless.for_no_font
? CHAR_TABLE_REF (Vglyphless_char_display,
glyph->u.glyphless.ch)
: XCHAR_TABLE (Vglyphless_char_display)->extras[0]);
if (STRINGP (acronym))
str = SSDATA (acronym);
}
}
else if (glyph->u.glyphless.method == GLYPHLESS_DISPLAY_HEX_CODE)
{
sprintf ((char *) buf, "%0*X",
glyph->u.glyphless.ch < 0x10000 ? 4 : 6,
glyph->u.glyphless.ch);
str = buf;
}
if (glyph->u.glyphless.method != GLYPHLESS_DISPLAY_THIN_SPACE)
w32_draw_rectangle (s->hdc, s->gc,
x, s->ybase - glyph->ascent,
glyph->pixel_width - 1,
glyph->ascent + glyph->descent - 1);
if (str)
{
struct font *font = s->font;
int upper_len = (len + 1) / 2;
unsigned code;
HFONT old_font;
old_font = SelectObject (s->hdc, FONT_HANDLE (font));
/* It is certain that all LEN characters in STR are ASCII. */
for (j = 0; j < len; j++)
{
code = font->driver->encode_char (font, str[j]);
STORE_XCHAR2B (char2b + j, code >> 8, code & 0xFF);
}
font->driver->draw (s, 0, upper_len,
x + glyph->slice.glyphless.upper_xoff,
s->ybase + glyph->slice.glyphless.upper_yoff,
with_background);
font->driver->draw (s, upper_len, len,
x + glyph->slice.glyphless.lower_xoff,
s->ybase + glyph->slice.glyphless.lower_yoff,
with_background);
SelectObject (s->hdc, old_font);
}
x += glyph->pixel_width;
}
}
/* Brightness beyond which a color won't have its highlight brightness
boosted.
Nominally, highlight colors for `3d' faces are calculated by
brightening an object's color by a constant scale factor, but this
doesn't yield good results for dark colors, so for colors whose
brightness is less than this value (on a scale of 0-255) have to
use an additional additive factor.
The value here is set so that the default menu-bar/mode-line color
(grey75) will not have its highlights changed at all. */
#define HIGHLIGHT_COLOR_DARK_BOOST_LIMIT 187
/* Allocate a color which is lighter or darker than *COLOR by FACTOR
or DELTA. Try a color with RGB values multiplied by FACTOR first.
If this produces the same color as COLOR, try a color where all RGB
values have DELTA added. Return the allocated color in *COLOR.
DISPLAY is the X display, CMAP is the colormap to operate on.
Value is non-zero if successful. */
static int
w32_alloc_lighter_color (struct frame *f, COLORREF *color,
double factor, int delta)
{
COLORREF new;
long bright;
/* On Windows, RGB values are 0-255, not 0-65535, so scale delta. */
delta /= 256;
/* Change RGB values by specified FACTOR. Avoid overflow! */
eassert (factor >= 0);
new = PALETTERGB (min (0xff, factor * GetRValue (*color)),
min (0xff, factor * GetGValue (*color)),
min (0xff, factor * GetBValue (*color)));
/* Calculate brightness of COLOR. */
bright = (2 * GetRValue (*color) + 3 * GetGValue (*color)
+ GetBValue (*color)) / 6;
/* We only boost colors that are darker than
HIGHLIGHT_COLOR_DARK_BOOST_LIMIT. */
if (bright < HIGHLIGHT_COLOR_DARK_BOOST_LIMIT)
/* Make an additive adjustment to NEW, because it's dark enough so
that scaling by FACTOR alone isn't enough. */
{
/* How far below the limit this color is (0 - 1, 1 being darker). */
double dimness = 1 - (double)bright / HIGHLIGHT_COLOR_DARK_BOOST_LIMIT;
/* The additive adjustment. */
int min_delta = delta * dimness * factor / 2;
if (factor < 1)
new = PALETTERGB (max (0, min (0xff, min_delta - GetRValue (*color))),
max (0, min (0xff, min_delta - GetGValue (*color))),
max (0, min (0xff, min_delta - GetBValue (*color))));
else
new = PALETTERGB (max (0, min (0xff, min_delta + GetRValue (*color))),
max (0, min (0xff, min_delta + GetGValue (*color))),
max (0, min (0xff, min_delta + GetBValue (*color))));
}
if (new == *color)
new = PALETTERGB (max (0, min (0xff, delta + GetRValue (*color))),
max (0, min (0xff, delta + GetGValue (*color))),
max (0, min (0xff, delta + GetBValue (*color))));
/* TODO: Map to palette and retry with delta if same? */
/* TODO: Free colors (if using palette)? */
if (new == *color)
return 0;
*color = new;
return 1;
}
/* On frame F, translate pixel colors to RGB values for the NCOLORS
colors in COLORS. On W32, we no longer try to map colors to
a palette. */
void
x_query_colors (struct frame *f, XColor *colors, int ncolors)
{
int i;
for (i = 0; i < ncolors; i++)
{
DWORD pixel = colors[i].pixel;
/* Convert to a 16 bit value in range 0 - 0xffff. */
colors[i].red = GetRValue (pixel) * 257;
colors[i].green = GetGValue (pixel) * 257;
colors[i].blue = GetBValue (pixel) * 257;
}
}
void
x_query_color (struct frame *f, XColor *color)
{
x_query_colors (f, color, 1);
}
/* Set up the foreground color for drawing relief lines of glyph
string S. RELIEF is a pointer to a struct relief containing the GC
with which lines will be drawn. Use a color that is FACTOR or
DELTA lighter or darker than the relief's background which is found
in S->f->output_data.x->relief_background. If such a color cannot
be allocated, use DEFAULT_PIXEL, instead. */
static void
w32_setup_relief_color (struct frame *f, struct relief *relief, double factor,
int delta, COLORREF default_pixel)
{
XGCValues xgcv;
struct w32_output *di = f->output_data.w32;
unsigned long mask = GCForeground;
COLORREF pixel;
COLORREF background = di->relief_background;
struct w32_display_info *dpyinfo = FRAME_DISPLAY_INFO (f);
/* TODO: Free colors (if using palette)? */
/* Allocate new color. */
xgcv.foreground = default_pixel;
pixel = background;
if (w32_alloc_lighter_color (f, &pixel, factor, delta))
xgcv.foreground = relief->pixel = pixel;
if (relief->gc == 0)
{
#if 0 /* TODO: stipple */
xgcv.stipple = dpyinfo->gray;
mask |= GCStipple;
#endif
relief->gc = XCreateGC (NULL, FRAME_W32_WINDOW (f), mask, &xgcv);
}
else
XChangeGC (NULL, relief->gc, mask, &xgcv);
}
/* Set up colors for the relief lines around glyph string S. */
static void
x_setup_relief_colors (struct glyph_string *s)
{
struct w32_output *di = s->f->output_data.w32;
COLORREF color;
if (s->face->use_box_color_for_shadows_p)
color = s->face->box_color;
else if (s->first_glyph->type == IMAGE_GLYPH
&& s->img->pixmap
&& !IMAGE_BACKGROUND_TRANSPARENT (s->img, s->f, 0))
color = IMAGE_BACKGROUND (s->img, s->f, 0);
else
color = s->gc->background;
if (di->white_relief.gc == 0
|| color != di->relief_background)
{
di->relief_background = color;
w32_setup_relief_color (s->f, &di->white_relief, 1.2, 0x8000,
WHITE_PIX_DEFAULT (s->f));
w32_setup_relief_color (s->f, &di->black_relief, 0.6, 0x4000,
BLACK_PIX_DEFAULT (s->f));
}
}
/* Draw a relief on frame F inside the rectangle given by LEFT_X,
TOP_Y, RIGHT_X, and BOTTOM_Y. WIDTH is the thickness of the relief
to draw, it must be >= 0. RAISED_P non-zero means draw a raised
relief. LEFT_P non-zero means draw a relief on the left side of
the rectangle. RIGHT_P non-zero means draw a relief on the right
side of the rectangle. CLIP_RECT is the clipping rectangle to use
when drawing. */
static void
w32_draw_relief_rect (struct frame *f,
int left_x, int top_y, int right_x, int bottom_y,
int width, int raised_p,
int top_p, int bot_p, int left_p, int right_p,
RECT *clip_rect)
{
int i;
XGCValues gc;
HDC hdc = get_frame_dc (f);
if (raised_p)
gc.foreground = f->output_data.w32->white_relief.gc->foreground;
else
gc.foreground = f->output_data.w32->black_relief.gc->foreground;
w32_set_clip_rectangle (hdc, clip_rect);
/* Top. */
if (top_p)
for (i = 0; i < width; ++i)
w32_fill_area (f, hdc, gc.foreground,
left_x + i * left_p, top_y + i,
right_x - left_x - i * (left_p + right_p ) + 1, 1);
/* Left. */
if (left_p)
for (i = 0; i < width; ++i)
w32_fill_area (f, hdc, gc.foreground,
left_x + i, top_y + (i + 1) * top_p, 1,
bottom_y - top_y - (i + 1) * (bot_p + top_p) + 1);
if (raised_p)
gc.foreground = f->output_data.w32->black_relief.gc->foreground;
else
gc.foreground = f->output_data.w32->white_relief.gc->foreground;
/* Bottom. */
if (bot_p)
for (i = 0; i < width; ++i)
w32_fill_area (f, hdc, gc.foreground,
left_x + i * left_p, bottom_y - i,
right_x - left_x - i * (left_p + right_p) + 1, 1);
/* Right. */
if (right_p)
for (i = 0; i < width; ++i)
w32_fill_area (f, hdc, gc.foreground,
right_x - i, top_y + (i + 1) * top_p, 1,
bottom_y - top_y - (i + 1) * (bot_p + top_p) + 1);
w32_set_clip_rectangle (hdc, NULL);
release_frame_dc (f, hdc);
}
/* Draw a box on frame F inside the rectangle given by LEFT_X, TOP_Y,
RIGHT_X, and BOTTOM_Y. WIDTH is the thickness of the lines to
draw, it must be >= 0. LEFT_P non-zero means draw a line on the
left side of the rectangle. RIGHT_P non-zero means draw a line
on the right side of the rectangle. CLIP_RECT is the clipping
rectangle to use when drawing. */
static void
w32_draw_box_rect (struct glyph_string *s,
int left_x, int top_y, int right_x, int bottom_y, int width,
int left_p, int right_p, RECT *clip_rect)
{
w32_set_clip_rectangle (s->hdc, clip_rect);
/* Top. */
w32_fill_area (s->f, s->hdc, s->face->box_color,
left_x, top_y, right_x - left_x + 1, width);
/* Left. */
if (left_p)
{
w32_fill_area (s->f, s->hdc, s->face->box_color,
left_x, top_y, width, bottom_y - top_y + 1);
}
/* Bottom. */
w32_fill_area (s->f, s->hdc, s->face->box_color,
left_x, bottom_y - width + 1, right_x - left_x + 1, width);
/* Right. */
if (right_p)
{
w32_fill_area (s->f, s->hdc, s->face->box_color,
right_x - width + 1, top_y, width, bottom_y - top_y + 1);
}
w32_set_clip_rectangle (s->hdc, NULL);
}
/* Draw a box around glyph string S. */
static void
x_draw_glyph_string_box (struct glyph_string *s)
{
int width, left_x, right_x, top_y, bottom_y, last_x, raised_p;
int left_p, right_p;
struct glyph *last_glyph;
RECT clip_rect;
last_x = ((s->row->full_width_p && !s->w->pseudo_window_p)
? WINDOW_RIGHT_EDGE_X (s->w)
: window_box_right (s->w, s->area));
/* The glyph that may have a right box line. */
last_glyph = (s->cmp || s->img
? s->first_glyph
: s->first_glyph + s->nchars - 1);
width = eabs (s->face->box_line_width);
raised_p = s->face->box == FACE_RAISED_BOX;
left_x = s->x;
right_x = ((s->row->full_width_p && s->extends_to_end_of_line_p
? last_x - 1
: min (last_x, s->x + s->background_width) - 1));
top_y = s->y;
bottom_y = top_y + s->height - 1;
left_p = (s->first_glyph->left_box_line_p
|| (s->hl == DRAW_MOUSE_FACE
&& (s->prev == NULL
|| s->prev->hl != s->hl)));
right_p = (last_glyph->right_box_line_p
|| (s->hl == DRAW_MOUSE_FACE
&& (s->next == NULL
|| s->next->hl != s->hl)));
get_glyph_string_clip_rect (s, &clip_rect);
if (s->face->box == FACE_SIMPLE_BOX)
w32_draw_box_rect (s, left_x, top_y, right_x, bottom_y, width,
left_p, right_p, &clip_rect);
else
{
x_setup_relief_colors (s);
w32_draw_relief_rect (s->f, left_x, top_y, right_x, bottom_y,
width, raised_p, 1, 1, left_p, right_p, &clip_rect);
}
}
/* Draw foreground of image glyph string S. */
static void
x_draw_image_foreground (struct glyph_string *s)
{
int x = s->x;
int y = s->ybase - image_ascent (s->img, s->face, &s->slice);
/* If first glyph of S has a left box line, start drawing it to the
right of that line. */
if (s->face->box != FACE_NO_BOX
&& s->first_glyph->left_box_line_p
&& s->slice.x == 0)
x += eabs (s->face->box_line_width);
/* If there is a margin around the image, adjust x- and y-position
by that margin. */
if (s->slice.x == 0)
x += s->img->hmargin;
if (s->slice.y == 0)
y += s->img->vmargin;
SaveDC (s->hdc);
if (s->img->pixmap)
{
HDC compat_hdc = CreateCompatibleDC (s->hdc);
HBRUSH fg_brush = CreateSolidBrush (s->gc->foreground);
HBRUSH orig_brush = SelectObject (s->hdc, fg_brush);
HGDIOBJ orig_obj = SelectObject (compat_hdc, s->img->pixmap);
SetBkColor (compat_hdc, RGB (255, 255, 255));
SetTextColor (s->hdc, RGB (0, 0, 0));
x_set_glyph_string_clipping (s);
if (s->img->mask)
{
HDC mask_dc = CreateCompatibleDC (s->hdc);
HGDIOBJ mask_orig_obj = SelectObject (mask_dc, s->img->mask);
SetTextColor (s->hdc, RGB (255, 255, 255));
SetBkColor (s->hdc, RGB (0, 0, 0));
BitBlt (s->hdc, x, y, s->slice.width, s->slice.height,
compat_hdc, s->slice.x, s->slice.y, SRCINVERT);
BitBlt (s->hdc, x, y, s->slice.width, s->slice.height,
mask_dc, s->slice.x, s->slice.y, SRCAND);
BitBlt (s->hdc, x, y, s->slice.width, s->slice.height,
compat_hdc, s->slice.x, s->slice.y, SRCINVERT);
SelectObject (mask_dc, mask_orig_obj);
DeleteDC (mask_dc);
}
else
{
SetTextColor (s->hdc, s->gc->foreground);
SetBkColor (s->hdc, s->gc->background);
BitBlt (s->hdc, x, y, s->slice.width, s->slice.height,
compat_hdc, s->slice.x, s->slice.y, SRCCOPY);
/* When the image has a mask, we can expect that at
least part of a mouse highlight or a block cursor will
be visible. If the image doesn't have a mask, make
a block cursor visible by drawing a rectangle around
the image. I believe it's looking better if we do
nothing here for mouse-face. */
if (s->hl == DRAW_CURSOR)
{
int r = s->img->relief;
if (r < 0) r = -r;
w32_draw_rectangle (s->hdc, s->gc, x - r, y - r ,
s->slice.width + r*2 - 1,
s->slice.height + r*2 - 1);
}
}
w32_set_clip_rectangle (s->hdc, NULL);
SelectObject (s->hdc, orig_brush);
DeleteObject (fg_brush);
SelectObject (compat_hdc, orig_obj);
DeleteDC (compat_hdc);
}
else
w32_draw_rectangle (s->hdc, s->gc, x, y,
s->slice.width - 1, s->slice.height - 1);
RestoreDC (s->hdc ,-1);
}
/* Draw a relief around the image glyph string S. */
static void
x_draw_image_relief (struct glyph_string *s)
{
int x1, y1, thick, raised_p, top_p, bot_p, left_p, right_p;
int extra_x, extra_y;
RECT r;
int x = s->x;
int y = s->ybase - image_ascent (s->img, s->face, &s->slice);
/* If first glyph of S has a left box line, start drawing it to the
right of that line. */
if (s->face->box != FACE_NO_BOX
&& s->first_glyph->left_box_line_p
&& s->slice.x == 0)
x += eabs (s->face->box_line_width);
/* If there is a margin around the image, adjust x- and y-position
by that margin. */
if (s->slice.x == 0)
x += s->img->hmargin;
if (s->slice.y == 0)
y += s->img->vmargin;
if (s->hl == DRAW_IMAGE_SUNKEN
|| s->hl == DRAW_IMAGE_RAISED)
{
thick = tool_bar_button_relief >= 0 ? tool_bar_button_relief
: DEFAULT_TOOL_BAR_BUTTON_RELIEF;
raised_p = s->hl == DRAW_IMAGE_RAISED;
}
else
{
thick = eabs (s->img->relief);
raised_p = s->img->relief > 0;
}
x1 = x + s->slice.width - 1;
y1 = y + s->slice.height - 1;
extra_x = extra_y = 0;
if (s->face->id == TOOL_BAR_FACE_ID)
{
if (CONSP (Vtool_bar_button_margin)
&& INTEGERP (XCAR (Vtool_bar_button_margin))
&& INTEGERP (XCDR (Vtool_bar_button_margin)))
{
extra_x = XINT (XCAR (Vtool_bar_button_margin));
extra_y = XINT (XCDR (Vtool_bar_button_margin));
}
else if (INTEGERP (Vtool_bar_button_margin))
extra_x = extra_y = XINT (Vtool_bar_button_margin);
}
top_p = bot_p = left_p = right_p = 0;
if (s->slice.x == 0)
x -= thick + extra_x, left_p = 1;
if (s->slice.y == 0)
y -= thick + extra_y, top_p = 1;
if (s->slice.x + s->slice.width == s->img->width)
x1 += thick + extra_x, right_p = 1;
if (s->slice.y + s->slice.height == s->img->height)
y1 += thick + extra_y, bot_p = 1;
x_setup_relief_colors (s);
get_glyph_string_clip_rect (s, &r);
w32_draw_relief_rect (s->f, x, y, x1, y1, thick, raised_p,
top_p, bot_p, left_p, right_p, &r);
}
/* Draw the foreground of image glyph string S to PIXMAP. */
static void
w32_draw_image_foreground_1 (struct glyph_string *s, HBITMAP pixmap)
{
HDC hdc = CreateCompatibleDC (s->hdc);
HGDIOBJ orig_hdc_obj = SelectObject (hdc, pixmap);
int x = 0;
int y = s->ybase - s->y - image_ascent (s->img, s->face, &s->slice);
/* If first glyph of S has a left box line, start drawing it to the
right of that line. */
if (s->face->box != FACE_NO_BOX
&& s->first_glyph->left_box_line_p
&& s->slice.x == 0)
x += eabs (s->face->box_line_width);
/* If there is a margin around the image, adjust x- and y-position
by that margin. */
if (s->slice.x == 0)
x += s->img->hmargin;
if (s->slice.y == 0)
y += s->img->vmargin;
if (s->img->pixmap)
{
HDC compat_hdc = CreateCompatibleDC (hdc);
HBRUSH fg_brush = CreateSolidBrush (s->gc->foreground);
HBRUSH orig_brush = SelectObject (hdc, fg_brush);
HGDIOBJ orig_obj = SelectObject (compat_hdc, s->img->pixmap);
if (s->img->mask)
{
HDC mask_dc = CreateCompatibleDC (hdc);
HGDIOBJ mask_orig_obj = SelectObject (mask_dc, s->img->mask);
SetTextColor (hdc, RGB (0, 0, 0));
SetBkColor (hdc, RGB (255, 255, 255));
BitBlt (hdc, x, y, s->slice.width, s->slice.height,
compat_hdc, s->slice.x, s->slice.y, SRCINVERT);
BitBlt (hdc, x, y, s->slice.width, s->slice.height,
mask_dc, s->slice.x, s->slice.y, SRCAND);
BitBlt (hdc, x, y, s->slice.width, s->slice.height,
compat_hdc, s->slice.x, s->slice.y, SRCINVERT);
SelectObject (mask_dc, mask_orig_obj);
DeleteDC (mask_dc);
}
else
{
SetTextColor (hdc, s->gc->foreground);
SetBkColor (hdc, s->gc->background);
BitBlt (hdc, x, y, s->slice.width, s->slice.height,
compat_hdc, s->slice.x, s->slice.y, SRCCOPY);
/* When the image has a mask, we can expect that at
least part of a mouse highlight or a block cursor will
be visible. If the image doesn't have a mask, make
a block cursor visible by drawing a rectangle around
the image. I believe it's looking better if we do
nothing here for mouse-face. */
if (s->hl == DRAW_CURSOR)
{
int r = s->img->relief;
if (r < 0) r = -r;
w32_draw_rectangle (hdc, s->gc, x - r, y - r,
s->slice.width + r*2 - 1,
s->slice.height + r*2 - 1);
}
}
SelectObject (hdc, orig_brush);
DeleteObject (fg_brush);
SelectObject (compat_hdc, orig_obj);
DeleteDC (compat_hdc);
}
else
w32_draw_rectangle (hdc, s->gc, x, y,
s->slice.width - 1, s->slice.height - 1);
SelectObject (hdc, orig_hdc_obj);
DeleteDC (hdc);
}
/* Draw part of the background of glyph string S. X, Y, W, and H
give the rectangle to draw. */
static void
x_draw_glyph_string_bg_rect (struct glyph_string *s, int x, int y, int w, int h)
{
#if 0 /* TODO: stipple */
if (s->stippled_p)
{
/* Fill background with a stipple pattern. */
XSetFillStyle (s->display, s->gc, FillOpaqueStippled);
XFillRectangle (s->display, s->window, s->gc, x, y, w, h);
XSetFillStyle (s->display, s->gc, FillSolid);
}
else
#endif
x_clear_glyph_string_rect (s, x, y, w, h);
}
/* Draw image glyph string S.
s->y
s->x +-------------------------
| s->face->box
|
| +-------------------------
| | s->img->vmargin
| |
| | +-------------------
| | | the image
*/
static void
x_draw_image_glyph_string (struct glyph_string *s)
{
int x, y;
int box_line_hwidth = eabs (s->face->box_line_width);
int box_line_vwidth = max (s->face->box_line_width, 0);
int height, width;
HBITMAP pixmap = 0;
height = s->height;
if (s->slice.y == 0)
height -= box_line_vwidth;
if (s->slice.y + s->slice.height >= s->img->height)
height -= box_line_vwidth;
/* Fill background with face under the image. Do it only if row is
taller than image or if image has a clip mask to reduce
flickering. */
s->stippled_p = s->face->stipple != 0;
if (height > s->slice.height
|| s->img->hmargin
|| s->img->vmargin
|| s->img->mask
|| s->img->pixmap == 0
|| s->width != s->background_width)
{
width = s->background_width;
x = s->x;
if (s->first_glyph->left_box_line_p
&& s->slice.x == 0)
{
x += box_line_hwidth;
width -= box_line_hwidth;
}
y = s->y;
if (s->slice.y == 0)
y += box_line_vwidth;
#if 0 /* TODO: figure out if we need to do this on Windows. */
if (s->img->mask)
{
/* Create a pixmap as large as the glyph string. Fill it
with the background color. Copy the image to it, using
its mask. Copy the temporary pixmap to the display. */
Screen *screen = FRAME_X_SCREEN (s->f);
int depth = DefaultDepthOfScreen (screen);
/* Create a pixmap as large as the glyph string. */
pixmap = XCreatePixmap (s->display, s->window,
s->background_width,
s->height, depth);
/* Don't clip in the following because we're working on the
pixmap. */
XSetClipMask (s->display, s->gc, None);
/* Fill the pixmap with the background color/stipple. */
if (s->stippled_p)
{
/* Fill background with a stipple pattern. */
XSetFillStyle (s->display, s->gc, FillOpaqueStippled);
XFillRectangle (s->display, pixmap, s->gc,
0, 0, s->background_width, s->height);
XSetFillStyle (s->display, s->gc, FillSolid);
}
else
{
XGCValues xgcv;
XGetGCValues (s->display, s->gc, GCForeground | GCBackground,
&xgcv);
XSetForeground (s->display, s->gc, xgcv.background);
XFillRectangle (s->display, pixmap, s->gc,
0, 0, s->background_width, s->height);
XSetForeground (s->display, s->gc, xgcv.foreground);
}
}
else
#endif
x_draw_glyph_string_bg_rect (s, x, y, width, height);
s->background_filled_p = 1;
}
/* Draw the foreground. */
if (pixmap != 0)
{
w32_draw_image_foreground_1 (s, pixmap);
x_set_glyph_string_clipping (s);
{
HDC compat_hdc = CreateCompatibleDC (s->hdc);
HBRUSH fg_brush = CreateSolidBrush (s->gc->foreground);
HBRUSH orig_brush = SelectObject (s->hdc, fg_brush);
HGDIOBJ orig_obj = SelectObject (compat_hdc, pixmap);
SetTextColor (s->hdc, s->gc->foreground);
SetBkColor (s->hdc, s->gc->background);
BitBlt (s->hdc, s->x, s->y, s->background_width, s->height,
compat_hdc, 0, 0, SRCCOPY);
SelectObject (s->hdc, orig_brush);
DeleteObject (fg_brush);
SelectObject (compat_hdc, orig_obj);
DeleteDC (compat_hdc);
}
DeleteObject (pixmap);
pixmap = 0;
}
else
x_draw_image_foreground (s);
/* If we must draw a relief around the image, do it. */
if (s->img->relief
|| s->hl == DRAW_IMAGE_RAISED
|| s->hl == DRAW_IMAGE_SUNKEN)
x_draw_image_relief (s);
}
/* Draw stretch glyph string S. */
static void
x_draw_stretch_glyph_string (struct glyph_string *s)
{
eassert (s->first_glyph->type == STRETCH_GLYPH);
if (s->hl == DRAW_CURSOR
&& !x_stretch_cursor_p)
{
/* If `x-stretch-cursor' is nil, don't draw a block cursor as
wide as the stretch glyph. */
int width, background_width = s->background_width;
int x = s->x;
if (!s->row->reversed_p)
{
int left_x = window_box_left_offset (s->w, TEXT_AREA);
if (x < left_x)
{
background_width -= left_x - x;
x = left_x;
}
}
else
{
/* In R2L rows, draw the cursor on the right edge of the
stretch glyph. */
int right_x = window_box_right (s->w, TEXT_AREA);
if (x + background_width > right_x)
background_width -= x - right_x;
x += background_width;
}
width = min (FRAME_COLUMN_WIDTH (s->f), background_width);
if (s->row->reversed_p)
x -= width;
/* Draw cursor. */
x_draw_glyph_string_bg_rect (s, x, s->y, width, s->height);
/* Clear rest using the GC of the original non-cursor face. */
if (width < background_width)
{
XGCValues *gc = s->face->gc;
int y = s->y;
int w = background_width - width, h = s->height;
RECT r;
HDC hdc = s->hdc;
if (!s->row->reversed_p)
x += width;
else
x = s->x;
if (s->row->mouse_face_p
&& cursor_in_mouse_face_p (s->w))
{
x_set_mouse_face_gc (s);
gc = s->gc;
}
else
gc = s->face->gc;
get_glyph_string_clip_rect (s, &r);
w32_set_clip_rectangle (hdc, &r);
#if 0 /* TODO: stipple */
if (s->face->stipple)
{
/* Fill background with a stipple pattern. */
XSetFillStyle (s->display, gc, FillOpaqueStippled);
XFillRectangle (s->display, s->window, gc, x, y, w, h);
XSetFillStyle (s->display, gc, FillSolid);
}
else
#endif
{
w32_fill_area (s->f, s->hdc, gc->background, x, y, w, h);
}
}
}
else if (!s->background_filled_p)
{
int background_width = s->background_width;
int x = s->x, left_x = window_box_left_offset (s->w, TEXT_AREA);
/* Don't draw into left margin, fringe or scrollbar area
except for header line and mode line. */
if (x < left_x && !s->row->mode_line_p)
{
background_width -= left_x - x;
x = left_x;
}
if (background_width > 0)
x_draw_glyph_string_bg_rect (s, x, s->y, background_width, s->height);
}
s->background_filled_p = 1;
}
/* Draw glyph string S. */
static void
x_draw_glyph_string (struct glyph_string *s)
{
bool relief_drawn_p = 0;
/* If S draws into the background of its successor, draw the
background of the successor first so that S can draw into it.
This makes S->next use XDrawString instead of XDrawImageString. */
if (s->next && s->right_overhang && !s->for_overlaps)
{
int width;
struct glyph_string *next;
for (width = 0, next = s->next;
next && width < s->right_overhang;
width += next->width, next = next->next)
if (next->first_glyph->type != IMAGE_GLYPH)
{
x_set_glyph_string_gc (next);
x_set_glyph_string_clipping (next);
if (next->first_glyph->type == STRETCH_GLYPH)
x_draw_stretch_glyph_string (next);
else
x_draw_glyph_string_background (next, 1);
next->num_clips = 0;
}
}
/* Set up S->gc, set clipping and draw S. */
x_set_glyph_string_gc (s);
/* Draw relief (if any) in advance for char/composition so that the
glyph string can be drawn over it. */
if (!s->for_overlaps
&& s->face->box != FACE_NO_BOX
&& (s->first_glyph->type == CHAR_GLYPH
|| s->first_glyph->type == COMPOSITE_GLYPH))
{
x_set_glyph_string_clipping (s);
x_draw_glyph_string_background (s, 1);
x_draw_glyph_string_box (s);
x_set_glyph_string_clipping (s);
relief_drawn_p = 1;
}
else if (!s->clip_head /* draw_glyphs didn't specify a clip mask. */
&& !s->clip_tail
&& ((s->prev && s->prev->hl != s->hl && s->left_overhang)
|| (s->next && s->next->hl != s->hl && s->right_overhang)))
/* We must clip just this glyph. left_overhang part has already
drawn when s->prev was drawn, and right_overhang part will be
drawn later when s->next is drawn. */
x_set_glyph_string_clipping_exactly (s, s);
else
x_set_glyph_string_clipping (s);
switch (s->first_glyph->type)
{
case IMAGE_GLYPH:
x_draw_image_glyph_string (s);
break;
case STRETCH_GLYPH:
x_draw_stretch_glyph_string (s);
break;
case CHAR_GLYPH:
if (s->for_overlaps)
s->background_filled_p = 1;
else
x_draw_glyph_string_background (s, 0);
x_draw_glyph_string_foreground (s);
break;
case COMPOSITE_GLYPH:
if (s->for_overlaps || (s->cmp_from > 0
&& ! s->first_glyph->u.cmp.automatic))
s->background_filled_p = 1;
else
x_draw_glyph_string_background (s, 1);
x_draw_composite_glyph_string_foreground (s);
break;
case GLYPHLESS_GLYPH:
if (s->for_overlaps)
s->background_filled_p = 1;
else
x_draw_glyph_string_background (s, 0);
x_draw_glyphless_glyph_string_foreground (s);
break;
default:
emacs_abort ();
}
if (!s->for_overlaps)
{
/* Draw underline. */
if (s->face->underline_p)
{
if (s->face->underline_type == FACE_UNDER_WAVE)
{
COLORREF color;
if (s->face->underline_defaulted_p)
color = s->gc->foreground;
else
color = s->face->underline_color;
w32_draw_underwave (s, color);
}
else if (s->face->underline_type == FACE_UNDER_LINE)
{
unsigned long thickness, position;
int y;
if (s->prev && s->prev->face->underline_p
&& s->prev->face->underline_type == FACE_UNDER_LINE)
{
/* We use the same underline style as the previous one. */
thickness = s->prev->underline_thickness;
position = s->prev->underline_position;
}
else
{
/* Get the underline thickness. Default is 1 pixel. */
if (s->font && s->font->underline_thickness > 0)
thickness = s->font->underline_thickness;
else
thickness = 1;
if (x_underline_at_descent_line)
position = (s->height - thickness) - (s->ybase - s->y);
else
{
/* Get the underline position. This is the recommended
vertical offset in pixels from the baseline to the top of
the underline. This is a signed value according to the
specs, and its default is
ROUND ((maximum_descent) / 2), with
ROUND (x) = floor (x + 0.5) */
if (x_use_underline_position_properties
&& s->font && s->font->underline_position >= 0)
position = s->font->underline_position;
else if (s->font)
position = (s->font->descent + 1) / 2;
}
position = max (position, underline_minimum_offset);
}
/* Check the sanity of thickness and position. We should
avoid drawing underline out of the current line area. */
if (s->y + s->height <= s->ybase + position)
position = (s->height - 1) - (s->ybase - s->y);
if (s->y + s->height < s->ybase + position + thickness)
thickness = (s->y + s->height) - (s->ybase + position);
s->underline_thickness = thickness;
s->underline_position =position;
y = s->ybase + position;
if (s->face->underline_defaulted_p)
{
w32_fill_area (s->f, s->hdc, s->gc->foreground, s->x,
y, s->width, 1);
}
else
{
w32_fill_area (s->f, s->hdc, s->face->underline_color, s->x,
y, s->width, 1);
}
}
}
/* Draw overline. */
if (s->face->overline_p)
{
unsigned long dy = 0, h = 1;
if (s->face->overline_color_defaulted_p)
{
w32_fill_area (s->f, s->hdc, s->gc->foreground, s->x,
s->y + dy, s->width, h);
}
else
{
w32_fill_area (s->f, s->hdc, s->face->overline_color, s->x,
s->y + dy, s->width, h);
}
}
/* Draw strike-through. */
if (s->face->strike_through_p
&& !FONT_TEXTMETRIC (s->font).tmStruckOut)
{
unsigned long h = 1;
unsigned long dy = (s->height - h) / 2;
if (s->face->strike_through_color_defaulted_p)
{
w32_fill_area (s->f, s->hdc, s->gc->foreground, s->x, s->y + dy,
s->width, h);
}
else
{
w32_fill_area (s->f, s->hdc, s->face->strike_through_color, s->x,
s->y + dy, s->width, h);
}
}
/* Draw relief if not yet drawn. */
if (!relief_drawn_p && s->face->box != FACE_NO_BOX)
x_draw_glyph_string_box (s);
if (s->prev)
{
struct glyph_string *prev;
for (prev = s->prev; prev; prev = prev->prev)
if (prev->hl != s->hl
&& prev->x + prev->width + prev->right_overhang > s->x)
{
/* As prev was drawn while clipped to its own area, we
must draw the right_overhang part using s->hl now. */
enum draw_glyphs_face save = prev->hl;
prev->hl = s->hl;
x_set_glyph_string_gc (prev);
x_set_glyph_string_clipping_exactly (s, prev);
if (prev->first_glyph->type == CHAR_GLYPH)
x_draw_glyph_string_foreground (prev);
else
x_draw_composite_glyph_string_foreground (prev);
w32_set_clip_rectangle (prev->hdc, NULL);
prev->hl = save;
prev->num_clips = 0;
}
}
if (s->next)
{
struct glyph_string *next;
for (next = s->next; next; next = next->next)
if (next->hl != s->hl
&& next->x - next->left_overhang < s->x + s->width)
{
/* As next will be drawn while clipped to its own area,
we must draw the left_overhang part using s->hl now. */
enum draw_glyphs_face save = next->hl;
next->hl = s->hl;
x_set_glyph_string_gc (next);
x_set_glyph_string_clipping_exactly (s, next);
if (next->first_glyph->type == CHAR_GLYPH)
x_draw_glyph_string_foreground (next);
else
x_draw_composite_glyph_string_foreground (next);
w32_set_clip_rectangle (next->hdc, NULL);
next->hl = save;
next->num_clips = 0;
next->clip_head = s->next;
}
}
}
/* Reset clipping. */
w32_set_clip_rectangle (s->hdc, NULL);
s->num_clips = 0;
}
/* Shift display to make room for inserted glyphs. */
void
w32_shift_glyphs_for_insert (struct frame *f, int x, int y,
int width, int height, int shift_by)
{
HDC hdc;
hdc = get_frame_dc (f);
BitBlt (hdc, x + shift_by, y, width, height,
hdc, x, y, SRCCOPY);
release_frame_dc (f, hdc);
}
/* Delete N glyphs at the nominal cursor position. Not implemented
for X frames. */
static void
x_delete_glyphs (struct frame *f, register int n)
{
if (! FRAME_W32_P (f))
return;
emacs_abort ();
}
/* Clear entire frame. */
static void
x_clear_frame (struct frame *f)
{
if (! FRAME_W32_P (f))
return;
/* Clearing the frame will erase any cursor, so mark them all as no
longer visible. */
mark_window_cursors_off (XWINDOW (FRAME_ROOT_WINDOW (f)));
block_input ();
w32_clear_window (f);
/* We have to clear the scroll bars, too. If we have changed
colors or something like that, then they should be notified. */
x_scroll_bar_clear (f);
unblock_input ();
}
/* Make audible bell. */
static void
w32_ring_bell (struct frame *f)
{
block_input ();
if (FRAME_W32_P (f) && visible_bell)
{
int i;
HWND hwnd = FRAME_W32_WINDOW (f);
for (i = 0; i < 5; i++)
{
FlashWindow (hwnd, TRUE);
Sleep (10);
}
FlashWindow (hwnd, FALSE);
}
else
w32_sys_ring_bell (f);
unblock_input ();
}
/***********************************************************************
Line Dance
***********************************************************************/
/* Perform an insert-lines or delete-lines operation, inserting N
lines or deleting -N lines at vertical position VPOS. */
static void
x_ins_del_lines (struct frame *f, int vpos, int n)
{
if (! FRAME_W32_P (f))
return;
emacs_abort ();
}
/* Scroll part of the display as described by RUN. */
static void
x_scroll_run (struct window *w, struct run *run)
{
struct frame *f = XFRAME (w->frame);
int x, y, width, height, from_y, to_y, bottom_y;
HWND hwnd = FRAME_W32_WINDOW (f);
HRGN expect_dirty;
/* Get frame-relative bounding box of the text display area of W,
without mode lines. Include in this box the left and right
fringes of W. */
window_box (w, ANY_AREA, &x, &y, &width, &height);
from_y = WINDOW_TO_FRAME_PIXEL_Y (w, run->current_y);
to_y = WINDOW_TO_FRAME_PIXEL_Y (w, run->desired_y);
bottom_y = y + height;
if (to_y < from_y)
{
/* Scrolling up. Make sure we don't copy part of the mode
line at the bottom. */
if (from_y + run->height > bottom_y)
height = bottom_y - from_y;
else
height = run->height;
expect_dirty = CreateRectRgn (x, y + height, x + width, bottom_y);
}
else
{
/* Scrolling down. Make sure we don't copy over the mode line.
at the bottom. */
if (to_y + run->height > bottom_y)
height = bottom_y - to_y;
else
height = run->height;
expect_dirty = CreateRectRgn (x, y, x + width, to_y);
}
block_input ();
/* Cursor off. Will be switched on again in x_update_window_end. */
x_clear_cursor (w);
{
RECT from;
RECT to;
HRGN dirty = CreateRectRgn (0, 0, 0, 0);
HRGN combined = CreateRectRgn (0, 0, 0, 0);
from.left = to.left = x;
from.right = to.right = x + width;
from.top = from_y;
from.bottom = from_y + height;
to.top = y;
to.bottom = bottom_y;
ScrollWindowEx (hwnd, 0, to_y - from_y, &from, &to, dirty,
NULL, SW_INVALIDATE);
/* Combine this with what we expect to be dirty. This covers the
case where not all of the region we expect is actually dirty. */
CombineRgn (combined, dirty, expect_dirty, RGN_OR);
/* If the dirty region is not what we expected, redraw the entire frame. */
if (!EqualRgn (combined, expect_dirty))
SET_FRAME_GARBAGED (f);
DeleteObject (dirty);
DeleteObject (combined);
}
unblock_input ();
DeleteObject (expect_dirty);
}
/***********************************************************************
Exposure Events
***********************************************************************/
static void
frame_highlight (struct frame *f)
{
x_update_cursor (f, 1);
x_set_frame_alpha (f);
}
static void
frame_unhighlight (struct frame *f)
{
x_update_cursor (f, 1);
x_set_frame_alpha (f);
}
/* The focus has changed. Update the frames as necessary to reflect
the new situation. Note that we can't change the selected frame
here, because the Lisp code we are interrupting might become confused.
Each event gets marked with the frame in which it occurred, so the
Lisp code can tell when the switch took place by examining the events. */
static void
x_new_focus_frame (struct w32_display_info *dpyinfo, struct frame *frame)
{
struct frame *old_focus = dpyinfo->w32_focus_frame;
if (frame != dpyinfo->w32_focus_frame)
{
/* Set this before calling other routines, so that they see
the correct value of w32_focus_frame. */
dpyinfo->w32_focus_frame = frame;
if (old_focus && old_focus->auto_lower)
x_lower_frame (old_focus);
if (dpyinfo->w32_focus_frame && dpyinfo->w32_focus_frame->auto_raise)
dpyinfo->w32_pending_autoraise_frame = dpyinfo->w32_focus_frame;
else
dpyinfo->w32_pending_autoraise_frame = NULL;
}
x_frame_rehighlight (dpyinfo);
}
/* Handle FocusIn and FocusOut state changes for FRAME.
If FRAME has focus and there exists more than one frame, puts
a FOCUS_IN_EVENT into *BUFP. */
static void
x_focus_changed (int type, int state, struct w32_display_info *dpyinfo,
struct frame *frame, struct input_event *bufp)
{
if (type == WM_SETFOCUS)
{
if (dpyinfo->w32_focus_event_frame != frame)
{
x_new_focus_frame (dpyinfo, frame);
dpyinfo->w32_focus_event_frame = frame;
/* Don't stop displaying the initial startup message
for a switch-frame event we don't need. */
if (NILP (Vterminal_frame)
&& CONSP (Vframe_list)
&& !NILP (XCDR (Vframe_list)))
{
bufp->arg = Qt;
}
else
{
bufp->arg = Qnil;
}
bufp->kind = FOCUS_IN_EVENT;
XSETFRAME (bufp->frame_or_window, frame);
}
frame->output_data.x->focus_state |= state;
/* TODO: IME focus? */
}
else if (type == WM_KILLFOCUS)
{
frame->output_data.x->focus_state &= ~state;
if (dpyinfo->w32_focus_event_frame == frame)
{
dpyinfo->w32_focus_event_frame = 0;
x_new_focus_frame (dpyinfo, 0);
bufp->kind = FOCUS_OUT_EVENT;
XSETFRAME (bufp->frame_or_window, frame);
}
/* TODO: IME focus? */
}
}
/* The focus may have changed. Figure out if it is a real focus change,
by checking both FocusIn/Out and Enter/LeaveNotify events.
Returns FOCUS_IN_EVENT event in *BUFP. */
static void
w32_detect_focus_change (struct w32_display_info *dpyinfo, W32Msg *event,
struct input_event *bufp)
{
struct frame *frame;
frame = x_any_window_to_frame (dpyinfo, event->msg.hwnd);
if (! frame)
return;
/* On w32, this is only called from focus events, so no switch needed. */
x_focus_changed (event->msg.message,
(event->msg.message == WM_KILLFOCUS ?
FOCUS_IMPLICIT : FOCUS_EXPLICIT),
dpyinfo, frame, bufp);
}
/* Handle an event saying the mouse has moved out of an Emacs frame. */
void
x_mouse_leave (struct w32_display_info *dpyinfo)
{
x_new_focus_frame (dpyinfo, dpyinfo->w32_focus_event_frame);
}
/* The focus has changed, or we have redirected a frame's focus to
another frame (this happens when a frame uses a surrogate
mini-buffer frame). Shift the highlight as appropriate.
The FRAME argument doesn't necessarily have anything to do with which
frame is being highlighted or un-highlighted; we only use it to find
the appropriate X display info. */
static void
w32_frame_rehighlight (struct frame *frame)
{
if (! FRAME_W32_P (frame))
return;
x_frame_rehighlight (FRAME_DISPLAY_INFO (frame));
}
static void
x_frame_rehighlight (struct w32_display_info *dpyinfo)
{
struct frame *old_highlight = dpyinfo->x_highlight_frame;
if (dpyinfo->w32_focus_frame)
{
dpyinfo->x_highlight_frame
= ((FRAMEP (FRAME_FOCUS_FRAME (dpyinfo->w32_focus_frame)))
? XFRAME (FRAME_FOCUS_FRAME (dpyinfo->w32_focus_frame))
: dpyinfo->w32_focus_frame);
if (! FRAME_LIVE_P (dpyinfo->x_highlight_frame))
{
fset_focus_frame (dpyinfo->w32_focus_frame, Qnil);
dpyinfo->x_highlight_frame = dpyinfo->w32_focus_frame;
}
}
else
dpyinfo->x_highlight_frame = 0;
if (dpyinfo->x_highlight_frame != old_highlight)
{
if (old_highlight)
frame_unhighlight (old_highlight);
if (dpyinfo->x_highlight_frame)
frame_highlight (dpyinfo->x_highlight_frame);
}
}
/* Keyboard processing - modifier keys, etc. */
/* Convert a keysym to its name. */
char *
x_get_keysym_name (int keysym)
{
/* Make static so we can always return it */
static char value[100];
block_input ();
GetKeyNameText (keysym, value, 100);
unblock_input ();
return value;
}
static int
codepage_for_locale (LCID locale)
{
char cp[20];
if (GetLocaleInfo (locale, LOCALE_IDEFAULTANSICODEPAGE, cp, 20) > 0)
return atoi (cp);
else
return CP_ACP;
}
/* Mouse clicks and mouse movement. Rah. */
/* Parse a button MESSAGE. The button index is returned in PBUTTON, and
the state in PUP. XBUTTON provides extra information for extended mouse
button messages. Returns FALSE if unable to parse the message. */
BOOL
parse_button (int message, int xbutton, int * pbutton, int * pup)
{
int button = 0;
int up = 0;
switch (message)
{
case WM_LBUTTONDOWN:
button = 0;
up = 0;
break;
case WM_LBUTTONUP:
button = 0;
up = 1;
break;
case WM_MBUTTONDOWN:
if (NILP (Vw32_swap_mouse_buttons))
button = 1;
else
button = 2;
up = 0;
break;
case WM_MBUTTONUP:
if (NILP (Vw32_swap_mouse_buttons))
button = 1;
else
button = 2;
up = 1;
break;
case WM_RBUTTONDOWN:
if (NILP (Vw32_swap_mouse_buttons))
button = 2;
else
button = 1;
up = 0;
break;
case WM_RBUTTONUP:
if (NILP (Vw32_swap_mouse_buttons))
button = 2;
else
button = 1;
up = 1;
break;
case WM_XBUTTONDOWN:
button = xbutton + 2;
up = 0;
break;
case WM_XBUTTONUP:
button = xbutton + 2;
up = 1;
break;
default:
return (FALSE);
}
if (pup) *pup = up;
if (pbutton) *pbutton = button;
return (TRUE);
}
/* Prepare a mouse-event in *RESULT for placement in the input queue.
If the event is a button press, then note that we have grabbed
the mouse. */
static Lisp_Object
construct_mouse_click (struct input_event *result, W32Msg *msg, struct frame *f)
{
int button;
int up;
parse_button (msg->msg.message, HIWORD (msg->msg.wParam),
&button, &up);
/* Make the event type NO_EVENT; we'll change that when we decide
otherwise. */
result->kind = MOUSE_CLICK_EVENT;
result->code = button;
result->timestamp = msg->msg.time;
result->modifiers = (msg->dwModifiers
| (up
? up_modifier
: down_modifier));
XSETINT (result->x, LOWORD (msg->msg.lParam));
XSETINT (result->y, HIWORD (msg->msg.lParam));
XSETFRAME (result->frame_or_window, f);
result->arg = Qnil;
return Qnil;
}
static Lisp_Object
construct_mouse_wheel (struct input_event *result, W32Msg *msg, struct frame *f)
{
POINT p;
int delta;
result->kind = msg->msg.message == WM_MOUSEHWHEEL ? HORIZ_WHEEL_EVENT
: WHEEL_EVENT;
result->code = 0;
result->timestamp = msg->msg.time;
/* A WHEEL_DELTA positive value indicates that the wheel was rotated
forward, away from the user (up); a negative value indicates that
the wheel was rotated backward, toward the user (down). */
delta = GET_WHEEL_DELTA_WPARAM (msg->msg.wParam);
/* The up and down modifiers indicate if the wheel was rotated up or
down based on WHEEL_DELTA value. */
result->modifiers = (msg->dwModifiers
| ((delta < 0 ) ? down_modifier : up_modifier));
/* With multiple monitors, we can legitimately get negative
coordinates, so cast to short to interpret them correctly. */
p.x = (short) LOWORD (msg->msg.lParam);
p.y = (short) HIWORD (msg->msg.lParam);
ScreenToClient (msg->msg.hwnd, &p);
XSETINT (result->x, p.x);
XSETINT (result->y, p.y);
XSETFRAME (result->frame_or_window, f);
result->arg = Qnil;
return Qnil;
}
static Lisp_Object
construct_drag_n_drop (struct input_event *result, W32Msg *msg, struct frame *f)
{
Lisp_Object files;
Lisp_Object frame;
HDROP hdrop;
POINT p;
WORD num_files;
wchar_t name_w[MAX_PATH];
#ifdef NTGUI_UNICODE
const int use_unicode = 1;
#else
int use_unicode = w32_unicode_filenames;
char name_a[MAX_PATH];
char file[MAX_UTF8_PATH];
#endif
int i;
result->kind = DRAG_N_DROP_EVENT;
result->code = 0;
result->timestamp = msg->msg.time;
result->modifiers = msg->dwModifiers;
hdrop = (HDROP) msg->msg.wParam;
DragQueryPoint (hdrop, &p);
#if 0
p.x = LOWORD (msg->msg.lParam);
p.y = HIWORD (msg->msg.lParam);
ScreenToClient (msg->msg.hwnd, &p);
#endif
XSETINT (result->x, p.x);
XSETINT (result->y, p.y);
num_files = DragQueryFile (hdrop, 0xFFFFFFFF, NULL, 0);
files = Qnil;
for (i = 0; i < num_files; i++)
{
if (use_unicode)
{
eassert (DragQueryFileW (hdrop, i, NULL, 0) < MAX_PATH);
/* If DragQueryFile returns zero, it failed to fetch a file
name. */
if (DragQueryFileW (hdrop, i, name_w, MAX_PATH) == 0)
continue;
#ifdef NTGUI_UNICODE
files = Fcons (from_unicode_buffer (name_w), files);
#else
filename_from_utf16 (name_w, file);
files = Fcons (DECODE_FILE (build_unibyte_string (file)), files);
#endif /* NTGUI_UNICODE */
}
#ifndef NTGUI_UNICODE
else
{
eassert (DragQueryFileA (hdrop, i, NULL, 0) < MAX_PATH);
if (DragQueryFileA (hdrop, i, name_a, MAX_PATH) == 0)
continue;
filename_from_ansi (name_a, file);
files = Fcons (DECODE_FILE (build_unibyte_string (file)), files);
}
#endif
}
DragFinish (hdrop);
XSETFRAME (frame, f);
result->frame_or_window = frame;
result->arg = files;
return Qnil;
}
#if HAVE_W32NOTIFY
/* File event notifications (see w32notify.c). */
Lisp_Object
lispy_file_action (DWORD action)
{
static char unknown_fmt[] = "unknown-action(%d)";
Lisp_Object retval;
switch (action)
{
case FILE_ACTION_ADDED:
retval = Qadded;
break;
case FILE_ACTION_REMOVED:
retval = Qremoved;
break;
case FILE_ACTION_MODIFIED:
retval = Qmodified;
break;
case FILE_ACTION_RENAMED_OLD_NAME:
retval = Qrenamed_from;
break;
case FILE_ACTION_RENAMED_NEW_NAME:
retval = Qrenamed_to;
break;
default:
{
char buf[sizeof(unknown_fmt) - 1 + INT_STRLEN_BOUND (DWORD)];
sprintf (buf, unknown_fmt, action);
retval = intern (buf);
}
break;
}
return retval;
}
#ifdef WINDOWSNT
/* Put file notifications into the Emacs input event queue. This
function runs when the WM_EMACS_FILENOTIFY message arrives from a
watcher thread. */
static void
queue_notifications (struct input_event *event, W32Msg *msg, struct frame *f,
int *evcount)
{
BYTE *p = file_notifications;
FILE_NOTIFY_INFORMATION *fni = (PFILE_NOTIFY_INFORMATION)p;
const DWORD min_size
= offsetof (FILE_NOTIFY_INFORMATION, FileName) + sizeof(wchar_t);
Lisp_Object frame;
/* We cannot process notification before Emacs is fully initialized,
since we need the UTF-16LE coding-system to be set up. */
if (!initialized)
{
notification_buffer_in_use = 0;
return;
}
XSETFRAME (frame, f);
enter_crit ();
if (notification_buffer_in_use)
{
DWORD info_size = notifications_size;
Lisp_Object cs = intern ("utf-16le");
Lisp_Object obj = w32_get_watch_object (notifications_desc);
/* notifications_size could be zero when the buffer of
notifications overflowed on the OS level, or when the
directory being watched was itself deleted. Do nothing in
that case. */
if (info_size
&& !NILP (obj) && CONSP (obj))
{
Lisp_Object callback = XCDR (obj);
while (info_size >= min_size)
{
Lisp_Object utf_16_fn
= make_unibyte_string ((char *)fni->FileName,
fni->FileNameLength);
/* Note: mule-conf is preloaded, so utf-16le must
already be defined at this point. */
Lisp_Object fname
= code_convert_string_norecord (utf_16_fn, cs, 0);
Lisp_Object action = lispy_file_action (fni->Action);
event->kind = FILE_NOTIFY_EVENT;
event->code
= (ptrdiff_t)XINT (XIL ((EMACS_INT)notifications_desc));
event->timestamp = msg->msg.time;
event->modifiers = 0;
event->frame_or_window = callback;
event->arg = Fcons (action, fname);
kbd_buffer_store_event (event);
(*evcount)++;
if (!fni->NextEntryOffset)
break;
p += fni->NextEntryOffset;
fni = (PFILE_NOTIFY_INFORMATION)p;
info_size -= fni->NextEntryOffset;
}
}
notification_buffer_in_use = 0;
}
else
DebPrint (("We were promised notifications, but in-use flag is zero!\n"));
leave_crit ();
/* We've stuffed all the events ourselves, so w32_read_socket shouldn't. */
event->kind = NO_EVENT;
}
#endif /* WINDOWSNT */
#endif /* HAVE_W32NOTIFY */
/* Function to report a mouse movement to the mainstream Emacs code.
The input handler calls this.
We have received a mouse movement event, which is given in *event.
If the mouse is over a different glyph than it was last time, tell
the mainstream emacs code by setting mouse_moved. If not, ask for
another motion event, so we can check again the next time it moves. */
static int
note_mouse_movement (struct frame *frame, MSG *msg)
{
struct w32_display_info *dpyinfo;
int mouse_x = LOWORD (msg->lParam);
int mouse_y = HIWORD (msg->lParam);
RECT *r;
if (!FRAME_X_OUTPUT (frame))
return 0;
dpyinfo = FRAME_DISPLAY_INFO (frame);
dpyinfo->last_mouse_movement_time = msg->time;
dpyinfo->last_mouse_motion_frame = frame;
dpyinfo->last_mouse_motion_x = mouse_x;
dpyinfo->last_mouse_motion_y = mouse_y;
if (msg->hwnd != FRAME_W32_WINDOW (frame))
{
frame->mouse_moved = 1;
dpyinfo->last_mouse_scroll_bar = NULL;
note_mouse_highlight (frame, -1, -1);
dpyinfo->last_mouse_glyph_frame = NULL;
return 1;
}
/* Has the mouse moved off the glyph it was on at the last sighting? */
r = &dpyinfo->last_mouse_glyph;
if (frame != dpyinfo->last_mouse_glyph_frame
|| mouse_x < r->left || mouse_x >= r->right
|| mouse_y < r->top || mouse_y >= r->bottom)
{
frame->mouse_moved = 1;
dpyinfo->last_mouse_scroll_bar = NULL;
note_mouse_highlight (frame, mouse_x, mouse_y);
/* Remember the mouse position here, as w32_mouse_position only
gets called when mouse tracking is enabled but we also need
to keep track of the mouse for help_echo and highlighting at
other times. */
remember_mouse_glyph (frame, mouse_x, mouse_y, r);
dpyinfo->last_mouse_glyph_frame = frame;
return 1;
}
return 0;
}
/************************************************************************
Mouse Face
************************************************************************/
static struct scroll_bar *x_window_to_scroll_bar (Window);
static void x_scroll_bar_report_motion (struct frame **, Lisp_Object *,
enum scroll_bar_part *,
Lisp_Object *, Lisp_Object *,
unsigned long *);
static void x_check_fullscreen (struct frame *);
static void
w32_define_cursor (Window window, Cursor cursor)
{
PostMessage (window, WM_EMACS_SETCURSOR, (WPARAM) cursor, 0);
}
/* Return the current position of the mouse.
*fp should be a frame which indicates which display to ask about.
If the mouse movement started in a scroll bar, set *fp, *bar_window,
and *part to the frame, window, and scroll bar part that the mouse
is over. Set *x and *y to the portion and whole of the mouse's
position on the scroll bar.
If the mouse movement started elsewhere, set *fp to the frame the
mouse is on, *bar_window to nil, and *x and *y to the character cell
the mouse is over.
Set *time to the server time-stamp for the time at which the mouse
was at this position.
Don't store anything if we don't have a valid set of values to report.
This clears the mouse_moved flag, so we can wait for the next mouse
movement. */
static void
w32_mouse_position (struct frame **fp, int insist, Lisp_Object *bar_window,
enum scroll_bar_part *part, Lisp_Object *x, Lisp_Object *y,
unsigned long *time)
{
struct frame *f1;
struct w32_display_info *dpyinfo = FRAME_DISPLAY_INFO (*fp);
block_input ();
if (dpyinfo->last_mouse_scroll_bar && insist == 0)
x_scroll_bar_report_motion (fp, bar_window, part, x, y, time);
else
{
POINT pt;
Lisp_Object frame, tail;
/* Clear the mouse-moved flag for every frame on this display. */
FOR_EACH_FRAME (tail, frame)
XFRAME (frame)->mouse_moved = 0;
dpyinfo->last_mouse_scroll_bar = NULL;
GetCursorPos (&pt);
/* Now we have a position on the root; find the innermost window
containing the pointer. */
{
/* If mouse was grabbed on a frame, give coords for that
frame even if the mouse is now outside it. Otherwise
check for window under mouse on one of our frames. */
f1 = (x_mouse_grabbed (dpyinfo) ? dpyinfo->last_mouse_frame
: x_any_window_to_frame (dpyinfo, WindowFromPoint (pt)));
/* If not, is it one of our scroll bars? */
if (! f1)
{
struct scroll_bar *bar
= x_window_to_scroll_bar (WindowFromPoint (pt));
if (bar)
f1 = XFRAME (WINDOW_FRAME (XWINDOW (bar->window)));
}
if (f1 == 0 && insist > 0)
f1 = SELECTED_FRAME ();
if (f1)
{
/* Ok, we found a frame. Store all the values.
last_mouse_glyph is a rectangle used to reduce the
generation of mouse events. To not miss any motion
events, we must divide the frame into rectangles of the
size of the smallest character that could be displayed
on it, i.e. into the same rectangles that matrices on
the frame are divided into. */
dpyinfo = FRAME_DISPLAY_INFO (f1);
ScreenToClient (FRAME_W32_WINDOW (f1), &pt);
remember_mouse_glyph (f1, pt.x, pt.y, &dpyinfo->last_mouse_glyph);
dpyinfo->last_mouse_glyph_frame = f1;
*bar_window = Qnil;
*part = 0;
*fp = f1;
XSETINT (*x, pt.x);
XSETINT (*y, pt.y);
*time = dpyinfo->last_mouse_movement_time;
}
}
}
unblock_input ();
}
/***********************************************************************
Tool-bars
***********************************************************************/
/* Handle mouse button event on the tool-bar of frame F, at
frame-relative coordinates X/Y. EVENT_TYPE is either ButtonPress
or ButtonRelease. */
static void
w32_handle_tool_bar_click (struct frame *f, struct input_event *button_event)
{
int x = XFASTINT (button_event->x);
int y = XFASTINT (button_event->y);
if (button_event->modifiers & down_modifier)
handle_tool_bar_click (f, x, y, 1, 0);
else
handle_tool_bar_click (f, x, y, 0,
button_event->modifiers & ~up_modifier);
}
/***********************************************************************
Scroll bars
***********************************************************************/
/* Scroll bar support. */
/* Given a window ID, find the struct scroll_bar which manages it.
This can be called in GC, so we have to make sure to strip off mark
bits. */
static struct scroll_bar *
x_window_to_scroll_bar (Window window_id)
{
Lisp_Object tail, frame;
FOR_EACH_FRAME (tail, frame)
{
Lisp_Object bar, condemned;
/* Scan this frame's scroll bar list for a scroll bar with the
right window ID. */
condemned = FRAME_CONDEMNED_SCROLL_BARS (XFRAME (frame));
for (bar = FRAME_SCROLL_BARS (XFRAME (frame));
/* This trick allows us to search both the ordinary and
condemned scroll bar lists with one loop. */
! NILP (bar) || (bar = condemned,
condemned = Qnil,
! NILP (bar));
bar = XSCROLL_BAR (bar)->next)
if (SCROLL_BAR_W32_WINDOW (XSCROLL_BAR (bar)) == window_id)
return XSCROLL_BAR (bar);
}
return 0;
}
/* Set the thumb size and position of scroll bar BAR. We are currently
displaying PORTION out of a whole WHOLE, and our position POSITION. */
static void
w32_set_scroll_bar_thumb (struct scroll_bar *bar,
int portion, int position, int whole)
{
Window w = SCROLL_BAR_W32_WINDOW (bar);
/* We use the whole scroll-bar height in the calculations below, to
avoid strange effects like scrolling backwards when just clicking
on the handle (without moving it). */
double range = VERTICAL_SCROLL_BAR_TOP_RANGE (f, bar->height)
+ VERTICAL_SCROLL_BAR_MIN_HANDLE;
int sb_page, sb_pos;
BOOL draggingp = bar->dragging ? TRUE : FALSE;
SCROLLINFO si;
/* We used to change the nPage setting while dragging the handle,
but that had very strange effects (such as scrolling backwards
while dragging downwards).
Now, we don't change the nPage setting while dragging unless we
get near to the end of the buffer, in which case we often have to
resize the handle to "go all the way". */
if (draggingp)
{
int near_bottom_p;
block_input ();
si.cbSize = sizeof (si);
si.fMask = SIF_POS | SIF_PAGE;
GetScrollInfo (w, SB_CTL, &si);
near_bottom_p = si.nPos + si.nPage >= range;
unblock_input ();
if (!near_bottom_p)
return;
}
if (whole)
{
/* Position scroll bar at rock bottom if the bottom of the
buffer is visible. This avoids shrinking the thumb away
to nothing if it is held at the bottom of the buffer. */
if (position + portion >= whole && !draggingp)
{
sb_page = range * (whole - position) / whole;
sb_pos = range;
}
else
{
sb_pos = position * range / whole;
sb_page = (min (portion, (whole - position)) * range) / whole;
}
}
else
{
sb_page = range;
sb_pos = 0;
}
sb_page = max (sb_page, VERTICAL_SCROLL_BAR_MIN_HANDLE);
block_input ();
si.cbSize = sizeof (si);
si.fMask = SIF_PAGE | SIF_POS;
si.nPage = sb_page;
si.nPos = sb_pos;
SetScrollInfo (w, SB_CTL, &si, TRUE);
unblock_input ();
}
/************************************************************************
Scroll bars, general
************************************************************************/
static HWND
my_create_scrollbar (struct frame * f, struct scroll_bar * bar)
{
return (HWND) SendMessage (FRAME_W32_WINDOW (f),
WM_EMACS_CREATESCROLLBAR, (WPARAM) f,
(LPARAM) bar);
}
/*#define ATTACH_THREADS*/
static BOOL
my_show_window (struct frame *f, HWND hwnd, int how)
{
#ifndef ATTACH_THREADS
return SendMessage (FRAME_W32_WINDOW (f), WM_EMACS_SHOWWINDOW,
(WPARAM) hwnd, (LPARAM) how);
#else
return ShowWindow (hwnd, how);
#endif
}
static void
my_set_window_pos (HWND hwnd, HWND hwndAfter,
int x, int y, int cx, int cy, UINT flags)
{
#ifndef ATTACH_THREADS
WINDOWPOS pos;
pos.hwndInsertAfter = hwndAfter;
pos.x = x;
pos.y = y;
pos.cx = cx;
pos.cy = cy;
pos.flags = flags;
SendMessage (hwnd, WM_EMACS_SETWINDOWPOS, (WPARAM) &pos, 0);
#else
SetWindowPos (hwnd, hwndAfter, x, y, cx, cy, flags);
#endif
}
#if 0
static void
my_set_focus (struct frame * f, HWND hwnd)
{
SendMessage (FRAME_W32_WINDOW (f), WM_EMACS_SETFOCUS,
(WPARAM) hwnd, 0);
}
#endif
static void
my_set_foreground_window (HWND hwnd)
{
SendMessage (hwnd, WM_EMACS_SETFOREGROUND, (WPARAM) hwnd, 0);
}
static void
my_destroy_window (struct frame * f, HWND hwnd)
{
SendMessage (FRAME_W32_WINDOW (f), WM_EMACS_DESTROYWINDOW,
(WPARAM) hwnd, 0);
}
static void
my_bring_window_to_top (HWND hwnd)
{
SendMessage (hwnd, WM_EMACS_BRINGTOTOP, (WPARAM) hwnd, 0);
}
/* Create a scroll bar and return the scroll bar vector for it. W is
the Emacs window on which to create the scroll bar. TOP, LEFT,
WIDTH and HEIGHT are the pixel coordinates and dimensions of the
scroll bar. */
static struct scroll_bar *
x_scroll_bar_create (struct window *w, int top, int left, int width, int height)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
HWND hwnd;
SCROLLINFO si;
struct scroll_bar *bar
= ALLOCATE_PSEUDOVECTOR (struct scroll_bar, top, PVEC_OTHER);
Lisp_Object barobj;
block_input ();
XSETWINDOW (bar->window, w);
bar->top = top;
bar->left = left;
bar->width = width;
bar->height = height;
bar->start = 0;
bar->end = 0;
bar->dragging = 0;
/* Requires geometry to be set before call to create the real window */
hwnd = my_create_scrollbar (f, bar);
si.cbSize = sizeof (si);
si.fMask = SIF_ALL;
si.nMin = 0;
si.nMax = VERTICAL_SCROLL_BAR_TOP_RANGE (f, height)
+ VERTICAL_SCROLL_BAR_MIN_HANDLE;
si.nPage = si.nMax;
si.nPos = 0;
SetScrollInfo (hwnd, SB_CTL, &si, FALSE);
SET_SCROLL_BAR_W32_WINDOW (bar, hwnd);
/* Add bar to its frame's list of scroll bars. */
bar->next = FRAME_SCROLL_BARS (f);
bar->prev = Qnil;
XSETVECTOR (barobj, bar);
fset_scroll_bars (f, barobj);
if (! NILP (bar->next))
XSETVECTOR (XSCROLL_BAR (bar->next)->prev, bar);
unblock_input ();
return bar;
}
/* Destroy scroll bar BAR, and set its Emacs window's scroll bar to
nil. */
static void
x_scroll_bar_remove (struct scroll_bar *bar)
{
struct frame *f = XFRAME (WINDOW_FRAME (XWINDOW (bar->window)));
block_input ();
/* Destroy the window. */
my_destroy_window (f, SCROLL_BAR_W32_WINDOW (bar));
/* Dissociate this scroll bar from its window. */
wset_vertical_scroll_bar (XWINDOW (bar->window), Qnil);
unblock_input ();
}
/* Set the handle of the vertical scroll bar for WINDOW to indicate
that we are displaying PORTION characters out of a total of WHOLE
characters, starting at POSITION. If WINDOW has no scroll bar,
create one. */
static void
w32_set_vertical_scroll_bar (struct window *w,
int portion, int whole, int position)
{
struct frame *f = XFRAME (w->frame);
Lisp_Object barobj;
struct scroll_bar *bar;
int top, height, left, width;
int window_y, window_height;
/* Get window dimensions. */
window_box (w, ANY_AREA, 0, &window_y, 0, &window_height);
top = window_y;
height = window_height;
/* Compute the left edge and the width of the scroll bar area. */
left = WINDOW_SCROLL_BAR_AREA_X (w);
width = WINDOW_SCROLL_BAR_AREA_WIDTH (w);
/* Does the scroll bar exist yet? */
if (NILP (w->vertical_scroll_bar))
{
HDC hdc;
block_input ();
if (width > 0 && height > 0)
{
hdc = get_frame_dc (f);
w32_clear_area (f, hdc, left, top, width, height);
release_frame_dc (f, hdc);
}
unblock_input ();
bar = x_scroll_bar_create (w, top, left, width, height);
}
else
{
/* It may just need to be moved and resized. */
HWND hwnd;
bar = XSCROLL_BAR (w->vertical_scroll_bar);
hwnd = SCROLL_BAR_W32_WINDOW (bar);
/* If already correctly positioned, do nothing. */
if (bar->left == left
&& bar->top == top
&& bar->width == width
&& bar->height == height)
{
/* Redraw after clear_frame. */
if (!my_show_window (f, hwnd, SW_NORMAL))
InvalidateRect (hwnd, NULL, FALSE);
}
else
{
HDC hdc;
SCROLLINFO si;
block_input ();
if (width && height)
{
hdc = get_frame_dc (f);
/* Since Windows scroll bars are smaller than the space reserved
for them on the frame, we have to clear "under" them. */
w32_clear_area (f, hdc, left, top, width, height);
release_frame_dc (f, hdc);
}
/* Make sure scroll bar is "visible" before moving, to ensure the
area of the parent window now exposed will be refreshed. */
my_show_window (f, hwnd, SW_HIDE);
MoveWindow (hwnd, left, top, width, max (height, 1), TRUE);
si.cbSize = sizeof (si);
si.fMask = SIF_RANGE;
si.nMin = 0;
si.nMax = VERTICAL_SCROLL_BAR_TOP_RANGE (f, height)
+ VERTICAL_SCROLL_BAR_MIN_HANDLE;
SetScrollInfo (hwnd, SB_CTL, &si, FALSE);
my_show_window (f, hwnd, SW_NORMAL);
/* InvalidateRect (w, NULL, FALSE); */
/* Remember new settings. */
bar->left = left;
bar->top = top;
bar->width = width;
bar->height = height;
unblock_input ();
}
}
w32_set_scroll_bar_thumb (bar, portion, position, whole);
XSETVECTOR (barobj, bar);
wset_vertical_scroll_bar (w, barobj);
}
/* The following three hooks are used when we're doing a thorough
redisplay of the frame. We don't explicitly know which scroll bars
are going to be deleted, because keeping track of when windows go
away is a real pain - "Can you say set-window-configuration, boys
and girls?" Instead, we just assert at the beginning of redisplay
that *all* scroll bars are to be removed, and then save a scroll bar
from the fiery pit when we actually redisplay its window. */
/* Arrange for all scroll bars on FRAME to be removed at the next call
to `*judge_scroll_bars_hook'. A scroll bar may be spared if
`*redeem_scroll_bar_hook' is applied to its window before the judgment. */
static void
w32_condemn_scroll_bars (struct frame *frame)
{
/* Transfer all the scroll bars to FRAME_CONDEMNED_SCROLL_BARS. */
while (! NILP (FRAME_SCROLL_BARS (frame)))
{
Lisp_Object bar;
bar = FRAME_SCROLL_BARS (frame);
fset_scroll_bars (frame, XSCROLL_BAR (bar)->next);
XSCROLL_BAR (bar)->next = FRAME_CONDEMNED_SCROLL_BARS (frame);
XSCROLL_BAR (bar)->prev = Qnil;
if (! NILP (FRAME_CONDEMNED_SCROLL_BARS (frame)))
XSCROLL_BAR (FRAME_CONDEMNED_SCROLL_BARS (frame))->prev = bar;
fset_condemned_scroll_bars (frame, bar);
}
}
/* Un-mark WINDOW's scroll bar for deletion in this judgment cycle.
Note that WINDOW isn't necessarily condemned at all. */
static void
w32_redeem_scroll_bar (struct window *window)
{
struct scroll_bar *bar;
Lisp_Object barobj;
struct frame *f;
/* We can't redeem this window's scroll bar if it doesn't have one. */
if (NILP (window->vertical_scroll_bar))
emacs_abort ();
bar = XSCROLL_BAR (window->vertical_scroll_bar);
/* Unlink it from the condemned list. */
f = XFRAME (WINDOW_FRAME (window));
if (NILP (bar->prev))
{
/* If the prev pointer is nil, it must be the first in one of
the lists. */
if (EQ (FRAME_SCROLL_BARS (f), window->vertical_scroll_bar))
/* It's not condemned. Everything's fine. */
return;
else if (EQ (FRAME_CONDEMNED_SCROLL_BARS (f),
window->vertical_scroll_bar))
fset_condemned_scroll_bars (f, bar->next);
else
/* If its prev pointer is nil, it must be at the front of
one or the other! */
emacs_abort ();
}
else
XSCROLL_BAR (bar->prev)->next = bar->next;
if (! NILP (bar->next))
XSCROLL_BAR (bar->next)->prev = bar->prev;
bar->next = FRAME_SCROLL_BARS (f);
bar->prev = Qnil;
XSETVECTOR (barobj, bar);
fset_scroll_bars (f, barobj);
if (! NILP (bar->next))
XSETVECTOR (XSCROLL_BAR (bar->next)->prev, bar);
}
/* Remove all scroll bars on FRAME that haven't been saved since the
last call to `*condemn_scroll_bars_hook'. */
static void
w32_judge_scroll_bars (struct frame *f)
{
Lisp_Object bar, next;
bar = FRAME_CONDEMNED_SCROLL_BARS (f);
/* Clear out the condemned list now so we won't try to process any
more events on the hapless scroll bars. */
fset_condemned_scroll_bars (f, Qnil);
for (; ! NILP (bar); bar = next)
{
struct scroll_bar *b = XSCROLL_BAR (bar);
x_scroll_bar_remove (b);
next = b->next;
b->next = b->prev = Qnil;
}
/* Now there should be no references to the condemned scroll bars,
and they should get garbage-collected. */
}
/* Handle a mouse click on the scroll bar BAR. If *EMACS_EVENT's kind
is set to something other than NO_EVENT, it is enqueued.
This may be called from a signal handler, so we have to ignore GC
mark bits. */
static int
w32_scroll_bar_handle_click (struct scroll_bar *bar, W32Msg *msg,
struct input_event *emacs_event)
{
if (! WINDOWP (bar->window))
emacs_abort ();
emacs_event->kind = SCROLL_BAR_CLICK_EVENT;
emacs_event->code = 0;
/* not really meaningful to distinguish up/down */
emacs_event->modifiers = msg->dwModifiers;
emacs_event->frame_or_window = bar->window;
emacs_event->arg = Qnil;
emacs_event->timestamp = msg->msg.time;
{
int top_range = VERTICAL_SCROLL_BAR_TOP_RANGE (f, bar->height);
int y;
int dragging = bar->dragging;
SCROLLINFO si;
si.cbSize = sizeof (si);
si.fMask = SIF_POS;
GetScrollInfo ((HWND) msg->msg.lParam, SB_CTL, &si);
y = si.nPos;
bar->dragging = 0;
FRAME_DISPLAY_INFO (f)->last_mouse_scroll_bar_pos = msg->msg.wParam;
switch (LOWORD (msg->msg.wParam))
{
case SB_LINEDOWN:
emacs_event->part = scroll_bar_down_arrow;
break;
case SB_LINEUP:
emacs_event->part = scroll_bar_up_arrow;
break;
case SB_PAGEUP:
emacs_event->part = scroll_bar_above_handle;
break;
case SB_PAGEDOWN:
emacs_event->part = scroll_bar_below_handle;
break;
case SB_TOP:
emacs_event->part = scroll_bar_handle;
y = 0;
break;
case SB_BOTTOM:
emacs_event->part = scroll_bar_handle;
y = top_range;
break;
case SB_THUMBTRACK:
case SB_THUMBPOSITION:
if (VERTICAL_SCROLL_BAR_TOP_RANGE (f, bar->height) <= 0xffff)
y = HIWORD (msg->msg.wParam);
bar->dragging = 1; /* ??????? */
emacs_event->part = scroll_bar_handle;
/* "Silently" update current position. */
{
SCROLLINFO si;
si.cbSize = sizeof (si);
si.fMask = SIF_POS;
si.nPos = y;
/* Remember apparent position (we actually lag behind the real
position, so don't set that directly). */
last_scroll_bar_drag_pos = y;
SetScrollInfo (SCROLL_BAR_W32_WINDOW (bar), SB_CTL, &si, FALSE);
}
break;
case SB_ENDSCROLL:
/* If this is the end of a drag sequence, then reset the scroll
handle size to normal and do a final redraw. Otherwise do
nothing. */
if (dragging)
{
SCROLLINFO si;
int start = bar->start;
int end = bar->end;
si.cbSize = sizeof (si);
si.fMask = SIF_PAGE | SIF_POS;
si.nPage = end - start + VERTICAL_SCROLL_BAR_MIN_HANDLE;
si.nPos = last_scroll_bar_drag_pos;
SetScrollInfo (SCROLL_BAR_W32_WINDOW (bar), SB_CTL, &si, TRUE);
}
/* fall through */
default:
emacs_event->kind = NO_EVENT;
return FALSE;
}
XSETINT (emacs_event->x, y);
XSETINT (emacs_event->y, top_range);
return TRUE;
}
}
/* Return information to the user about the current position of the mouse
on the scroll bar. */
static void
x_scroll_bar_report_motion (struct frame **fp, Lisp_Object *bar_window,
enum scroll_bar_part *part,
Lisp_Object *x, Lisp_Object *y,
unsigned long *time)
{
struct w32_display_info *dpyinfo = FRAME_DISPLAY_INFO (*fp);
struct scroll_bar *bar = dpyinfo->last_mouse_scroll_bar;
Window w = SCROLL_BAR_W32_WINDOW (bar);
struct frame *f = XFRAME (WINDOW_FRAME (XWINDOW (bar->window)));
int pos;
int top_range = VERTICAL_SCROLL_BAR_TOP_RANGE (f, bar->height);
SCROLLINFO si;
block_input ();
*fp = f;
*bar_window = bar->window;
si.cbSize = sizeof (si);
si.fMask = SIF_POS | SIF_PAGE | SIF_RANGE;
GetScrollInfo (w, SB_CTL, &si);
pos = si.nPos;
top_range = si.nMax - si.nPage + 1;
switch (LOWORD (dpyinfo->last_mouse_scroll_bar_pos))
{
case SB_THUMBPOSITION:
case SB_THUMBTRACK:
*part = scroll_bar_handle;
if (VERTICAL_SCROLL_BAR_TOP_RANGE (f, bar->height) <= 0xffff)
pos = HIWORD (dpyinfo->last_mouse_scroll_bar_pos);
break;
case SB_LINEDOWN:
*part = scroll_bar_handle;
pos++;
break;
default:
*part = scroll_bar_handle;
break;
}
XSETINT (*x, pos);
XSETINT (*y, top_range);
f->mouse_moved = 0;
dpyinfo->last_mouse_scroll_bar = NULL;
*time = dpyinfo->last_mouse_movement_time;
unblock_input ();
}
/* The screen has been cleared so we may have changed foreground or
background colors, and the scroll bars may need to be redrawn.
Clear out the scroll bars, and ask for expose events, so we can
redraw them. */
void
x_scroll_bar_clear (struct frame *f)
{
Lisp_Object bar;
/* We can have scroll bars even if this is 0,
if we just turned off scroll bar mode.
But in that case we should not clear them. */
if (FRAME_HAS_VERTICAL_SCROLL_BARS (f))
for (bar = FRAME_SCROLL_BARS (f); VECTORP (bar);
bar = XSCROLL_BAR (bar)->next)
{
HWND window = SCROLL_BAR_W32_WINDOW (XSCROLL_BAR (bar));
HDC hdc = GetDC (window);
RECT rect;
/* Hide scroll bar until ready to repaint. x_scroll_bar_move
arranges to refresh the scroll bar if hidden. */
my_show_window (f, window, SW_HIDE);
GetClientRect (window, &rect);
select_palette (f, hdc);
w32_clear_rect (f, hdc, &rect);
deselect_palette (f, hdc);
ReleaseDC (window, hdc);
}
}
/* The main W32 event-reading loop - w32_read_socket. */
/* Record the last 100 characters stored
to help debug the loss-of-chars-during-GC problem. */
static int temp_index;
static short temp_buffer[100];
/* Temporarily store lead byte of DBCS input sequences. */
static char dbcs_lead = 0;
/* Read events coming from the W32 shell.
This routine is called by the SIGIO handler.
We return as soon as there are no more events to be read.
For an overview of how Emacs input works on MS-Windows, see the
commentary before w32_msg_pump in w32fns.c.
We return the number of characters stored into the buffer,
thus pretending to be `read'.
Some of these messages are reposted back to the message queue since the
system calls the windows proc directly in a context where we cannot return
the data nor can we guarantee the state we are in. So if we dispatch them
we will get into an infinite loop. To prevent this from ever happening we
will set a variable to indicate we are in the read_socket call and indicate
which message we are processing since the windows proc gets called
recursively with different messages by the system.
*/
static int
w32_read_socket (struct terminal *terminal,
struct input_event *hold_quit)
{
int count = 0;
int check_visibility = 0;
W32Msg msg;
struct frame *f;
struct w32_display_info *dpyinfo = &one_w32_display_info;
Mouse_HLInfo *hlinfo = &dpyinfo->mouse_highlight;
block_input ();
/* So people can tell when we have read the available input. */
input_signal_count++;
/* Process any incoming thread messages. */
drain_message_queue ();
/* TODO: ghostscript integration. */
while (get_next_msg (&msg, FALSE))
{
struct input_event inev;
int do_help = 0;
/* DebPrint (("w32_read_socket: %s time:%u\n", */
/* w32_name_of_message (msg.msg.message), */
/* msg.msg.time)); */
EVENT_INIT (inev);
inev.kind = NO_EVENT;
inev.arg = Qnil;
switch (msg.msg.message)
{
case WM_EMACS_PAINT:
f = x_window_to_frame (dpyinfo, msg.msg.hwnd);
if (f)
{
if (msg.rect.right == msg.rect.left ||
msg.rect.bottom == msg.rect.top)
{
/* We may get paint messages even though the client
area is clipped - these are not expose events. */
DebPrint (("clipped frame %p (%s) got WM_PAINT - ignored\n", f,
SDATA (f->name)));
}
else if (FRAME_VISIBLE_P (f) != 1)
{
bool iconified = FRAME_ICONIFIED_P (f);
/* Definitely not obscured, so mark as visible. */
SET_FRAME_VISIBLE (f, 1);
SET_FRAME_ICONIFIED (f, 0);
SET_FRAME_GARBAGED (f);
if (!f->output_data.w32->asked_for_visible)
DebPrint (("frame %p (%s) reexposed by WM_PAINT\n", f,
SDATA (f->name)));
/* WM_PAINT serves as MapNotify as well, so report
visibility changes properly. */
if (iconified)
{
inev.kind = DEICONIFY_EVENT;
XSETFRAME (inev.frame_or_window, f);
}
else if (!NILP (Vframe_list) && !NILP (XCDR (Vframe_list)))
/* Force a redisplay sooner or later to update the
frame titles in case this is the second frame. */
record_asynch_buffer_change ();
}
else
{