/
frames.c
2658 lines (2201 loc) · 79.2 KB
/
frames.c
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Metacity window frame manager widget */
/*
* Copyright (C) 2001 Havoc Pennington
* Copyright (C) 2003 Red Hat, Inc.
* Copyright (C) 2005, 2006 Elijah Newren
*
* This program 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 2 of the
* License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Suite 500, Boston, MA
* 02110-1335, USA.
*/
#include <config.h>
#include <math.h>
#include <string.h>
#include <meta/boxes.h>
#include "frames.h"
#include <meta/util.h>
#include "core.h"
#include "menu.h"
#include "window-private.h"
#include <meta/theme.h>
#include <meta/prefs.h>
#include "ui.h"
#include <cairo-xlib.h>
#ifdef HAVE_SHAPE
#include <X11/extensions/shape.h>
#endif
#define DEFAULT_INNER_BUTTON_BORDER 3
static void meta_frames_destroy (GtkWidget *object);
static void meta_frames_finalize (GObject *object);
static void meta_frames_style_updated (GtkWidget *widget);
static void meta_frames_update_prelit_control (MetaFrames *frames,
MetaUIFrame *frame,
MetaFrameControl control);
static gboolean meta_frames_button_press_event (GtkWidget *widget,
GdkEventButton *event);
static gboolean meta_frames_button_release_event (GtkWidget *widget,
GdkEventButton *event);
static gboolean meta_frames_motion_notify_event (GtkWidget *widget,
GdkEventMotion *event);
static gboolean meta_frames_destroy_event (GtkWidget *widget,
GdkEventAny *event);
static gboolean meta_frames_draw (GtkWidget *widget,
cairo_t *cr);
static gboolean meta_frames_enter_notify_event (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean meta_frames_leave_notify_event (GtkWidget *widget,
GdkEventCrossing *event);
static void meta_frames_attach_style (MetaFrames *frames,
MetaUIFrame *frame);
static void meta_frames_paint (MetaFrames *frames,
MetaUIFrame *frame,
cairo_t *cr);
static void meta_frames_calc_geometry (MetaFrames *frames,
MetaUIFrame *frame,
MetaFrameGeometry *fgeom);
static void meta_frames_ensure_layout (MetaFrames *frames,
MetaUIFrame *frame);
static MetaUIFrame* meta_frames_lookup_window (MetaFrames *frames,
Window xwindow);
static void meta_frames_font_changed (MetaFrames *frames);
static void meta_frames_button_layout_changed (MetaFrames *frames);
static GdkRectangle* control_rect (MetaFrameControl control,
MetaFrameGeometry *fgeom);
static MetaFrameControl get_control (MetaFrames *frames,
MetaUIFrame *frame,
int x,
int y);
static void invalidate_all_caches (MetaFrames *frames);
static void invalidate_whole_window (MetaFrames *frames,
MetaUIFrame *frame);
G_DEFINE_TYPE (MetaFrames, meta_frames, GTK_TYPE_WINDOW);
static GObject *
meta_frames_constructor (GType gtype,
guint n_properties,
GObjectConstructParam *properties)
{
GObject *object;
GObjectClass *gobject_class;
gobject_class = G_OBJECT_CLASS (meta_frames_parent_class);
object = gobject_class->constructor (gtype, n_properties, properties);
g_object_set (object,
"type", GTK_WINDOW_POPUP,
NULL);
return object;
}
static void
meta_frames_class_init (MetaFramesClass *class)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
gobject_class = G_OBJECT_CLASS (class);
widget_class = (GtkWidgetClass*) class;
gobject_class->constructor = meta_frames_constructor;
gobject_class->finalize = meta_frames_finalize;
widget_class->destroy = meta_frames_destroy;
widget_class->style_updated = meta_frames_style_updated;
widget_class->draw = meta_frames_draw;
widget_class->destroy_event = meta_frames_destroy_event;
widget_class->button_press_event = meta_frames_button_press_event;
widget_class->button_release_event = meta_frames_button_release_event;
widget_class->motion_notify_event = meta_frames_motion_notify_event;
widget_class->enter_notify_event = meta_frames_enter_notify_event;
widget_class->leave_notify_event = meta_frames_leave_notify_event;
}
static gint
unsigned_long_equal (gconstpointer v1,
gconstpointer v2)
{
return *((const gulong*) v1) == *((const gulong*) v2);
}
static guint
unsigned_long_hash (gconstpointer v)
{
gulong val = * (const gulong *) v;
/* I'm not sure this works so well. */
#if GLIB_SIZEOF_LONG > 4
return (guint) (val ^ (val >> 32));
#else
return val;
#endif
}
static void
prefs_changed_callback (MetaPreference pref,
void *data)
{
switch (pref)
{
case META_PREF_TITLEBAR_FONT:
meta_frames_font_changed (META_FRAMES (data));
break;
case META_PREF_BUTTON_LAYOUT:
meta_frames_button_layout_changed (META_FRAMES (data));
break;
default:
break;
}
}
static GtkStyleContext *
create_style_context (MetaFrames *frames,
const gchar *variant)
{
GtkStyleContext *style;
GdkScreen *screen;
char *theme_name;
screen = gtk_widget_get_screen (GTK_WIDGET (frames));
g_object_get (gtk_settings_get_for_screen (screen),
"gtk-theme-name", &theme_name,
NULL);
style = gtk_style_context_new ();
gtk_style_context_set_path (style,
gtk_widget_get_path (GTK_WIDGET (frames)));
if (theme_name && *theme_name)
{
GtkCssProvider *provider;
provider = gtk_css_provider_get_named (theme_name, variant);
gtk_style_context_add_provider (style,
GTK_STYLE_PROVIDER (provider),
GTK_STYLE_PROVIDER_PRIORITY_SETTINGS);
}
g_free (theme_name);
return style;
}
static GtkStyleContext *
meta_frames_get_theme_variant (MetaFrames *frames,
const gchar *variant)
{
GtkStyleContext *style;
style = g_hash_table_lookup (frames->style_variants, variant);
if (style == NULL)
{
style = create_style_context (frames, variant);
g_hash_table_insert (frames->style_variants, g_strdup (variant), style);
}
return style;
}
static void
update_style_contexts (MetaFrames *frames)
{
GtkStyleContext *style;
GList *variant_list, *variant;
if (frames->normal_style)
g_object_unref (frames->normal_style);
frames->normal_style = create_style_context (frames, NULL);
variant_list = g_hash_table_get_keys (frames->style_variants);
for (variant = variant_list; variant; variant = variant->next)
{
style = create_style_context (frames, (char *)variant->data);
g_hash_table_insert (frames->style_variants,
g_strdup (variant->data), style);
}
g_list_free (variant_list);
}
static void
meta_frames_init (MetaFrames *frames)
{
frames->text_heights = g_hash_table_new (NULL, NULL);
frames->frames = g_hash_table_new (unsigned_long_hash, unsigned_long_equal);
frames->invalidate_cache_timeout_id = 0;
frames->invalidate_frames = NULL;
frames->cache = g_hash_table_new (g_direct_hash, g_direct_equal);
frames->style_variants = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, g_object_unref);
update_style_contexts (frames);
gtk_widget_set_double_buffered (GTK_WIDGET (frames), FALSE);
meta_prefs_add_listener (prefs_changed_callback, frames);
}
static void
listify_func (gpointer key, gpointer value, gpointer data)
{
GSList **listp;
listp = data;
*listp = g_slist_prepend (*listp, value);
}
static void
meta_frames_destroy (GtkWidget *object)
{
GSList *winlist;
GSList *tmp;
MetaFrames *frames;
frames = META_FRAMES (object);
winlist = NULL;
g_hash_table_foreach (frames->frames, listify_func, &winlist);
/* Unmanage all frames */
for (tmp = winlist; tmp != NULL; tmp = tmp->next)
{
MetaUIFrame *frame;
frame = tmp->data;
meta_frames_unmanage_window (frames, frame->xwindow);
}
g_slist_free (winlist);
if (frames->normal_style)
{
g_object_unref (frames->normal_style);
frames->normal_style = NULL;
}
if (frames->style_variants)
{
g_hash_table_destroy (frames->style_variants);
frames->style_variants = NULL;
}
GTK_WIDGET_CLASS (meta_frames_parent_class)->destroy (object);
}
static void
meta_frames_finalize (GObject *object)
{
MetaFrames *frames;
frames = META_FRAMES (object);
meta_prefs_remove_listener (prefs_changed_callback, frames);
g_hash_table_destroy (frames->text_heights);
invalidate_all_caches (frames);
if (frames->invalidate_cache_timeout_id) {
g_source_remove (frames->invalidate_cache_timeout_id);
frames->invalidate_cache_timeout_id = 0;
}
g_assert (g_hash_table_size (frames->frames) == 0);
g_hash_table_destroy (frames->frames);
g_hash_table_destroy (frames->cache);
G_OBJECT_CLASS (meta_frames_parent_class)->finalize (object);
}
typedef struct
{
cairo_rectangle_int_t rect;
cairo_surface_t *pixmap;
} CachedFramePiece;
typedef struct
{
/* Caches of the four rendered sides in a MetaFrame.
* Order: top (titlebar), left, right, bottom.
*/
CachedFramePiece piece[4];
} CachedPixels;
static CachedPixels *
get_cache (MetaFrames *frames,
MetaUIFrame *frame)
{
CachedPixels *pixels;
pixels = g_hash_table_lookup (frames->cache, frame);
if (!pixels)
{
pixels = g_new0 (CachedPixels, 1);
g_hash_table_insert (frames->cache, frame, pixels);
}
return pixels;
}
static void
invalidate_cache (MetaFrames *frames,
MetaUIFrame *frame)
{
CachedPixels *pixels = get_cache (frames, frame);
int i;
for (i = 0; i < 4; i++)
if (pixels->piece[i].pixmap)
cairo_surface_destroy (pixels->piece[i].pixmap);
g_free (pixels);
g_hash_table_remove (frames->cache, frame);
}
static void
invalidate_all_caches (MetaFrames *frames)
{
GList *l;
for (l = frames->invalidate_frames; l; l = l->next)
{
MetaUIFrame *frame = l->data;
invalidate_cache (frames, frame);
}
g_list_free (frames->invalidate_frames);
frames->invalidate_frames = NULL;
}
static gboolean
invalidate_cache_timeout (gpointer data)
{
MetaFrames *frames = data;
invalidate_all_caches (frames);
frames->invalidate_cache_timeout_id = 0;
return FALSE;
}
static void
queue_recalc_func (gpointer key, gpointer value, gpointer data)
{
MetaUIFrame *frame;
MetaFrames *frames;
frames = META_FRAMES (data);
frame = value;
invalidate_whole_window (frames, frame);
meta_core_queue_frame_resize (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
frame->xwindow);
if (frame->layout)
{
/* save title to recreate layout */
g_free (frame->title);
frame->title = g_strdup (pango_layout_get_text (frame->layout));
g_object_unref (G_OBJECT (frame->layout));
frame->layout = NULL;
}
}
static void
meta_frames_font_changed (MetaFrames *frames)
{
if (g_hash_table_size (frames->text_heights) > 0)
{
g_hash_table_destroy (frames->text_heights);
frames->text_heights = g_hash_table_new (NULL, NULL);
}
/* Queue a draw/resize on all frames */
g_hash_table_foreach (frames->frames,
queue_recalc_func, frames);
}
static void
queue_draw_func (gpointer key, gpointer value, gpointer data)
{
MetaUIFrame *frame;
MetaFrames *frames;
frames = META_FRAMES (data);
frame = value;
invalidate_whole_window (frames, frame);
}
static void
meta_frames_button_layout_changed (MetaFrames *frames)
{
g_hash_table_foreach (frames->frames,
queue_draw_func, frames);
}
static void
reattach_style_func (gpointer key, gpointer value, gpointer data)
{
MetaUIFrame *frame;
MetaFrames *frames;
frames = META_FRAMES (data);
frame = value;
meta_frames_attach_style (frames, frame);
}
static void
meta_frames_style_updated (GtkWidget *widget)
{
MetaFrames *frames;
frames = META_FRAMES (widget);
meta_frames_font_changed (frames);
update_style_contexts (frames);
g_hash_table_foreach (frames->frames,
reattach_style_func, frames);
GTK_WIDGET_CLASS (meta_frames_parent_class)->style_updated (widget);
}
static void
meta_frames_ensure_layout (MetaFrames *frames,
MetaUIFrame *frame)
{
GtkWidget *widget;
MetaFrameFlags flags;
MetaFrameType type;
MetaFrameStyle *style;
widget = GTK_WIDGET (frames);
g_return_if_fail (gtk_widget_get_realized (widget));
meta_core_get (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), frame->xwindow,
META_CORE_GET_FRAME_FLAGS, &flags,
META_CORE_GET_FRAME_TYPE, &type,
META_CORE_GET_END);
style = meta_theme_get_frame_style (meta_theme_get_current (),
type, flags);
if (style != frame->cache_style)
{
if (frame->layout)
{
/* save title to recreate layout */
g_free (frame->title);
frame->title = g_strdup (pango_layout_get_text (frame->layout));
g_object_unref (G_OBJECT (frame->layout));
frame->layout = NULL;
}
}
frame->cache_style = style;
if (frame->layout == NULL)
{
gpointer key, value;
PangoFontDescription *font_desc;
double scale;
int size;
scale = meta_theme_get_title_scale (meta_theme_get_current (),
type,
flags);
frame->layout = gtk_widget_create_pango_layout (widget, frame->title);
pango_layout_set_ellipsize (frame->layout, PANGO_ELLIPSIZE_END);
pango_layout_set_auto_dir (frame->layout, FALSE);
font_desc = meta_gtk_widget_get_font_desc (widget, scale,
meta_prefs_get_titlebar_font ());
size = pango_font_description_get_size (font_desc);
if (g_hash_table_lookup_extended (frames->text_heights,
GINT_TO_POINTER (size),
&key, &value))
{
frame->text_height = GPOINTER_TO_INT (value);
}
else
{
frame->text_height =
meta_pango_font_desc_get_text_height (font_desc,
gtk_widget_get_pango_context (widget));
g_hash_table_replace (frames->text_heights,
GINT_TO_POINTER (size),
GINT_TO_POINTER (frame->text_height));
}
pango_layout_set_font_description (frame->layout,
font_desc);
pango_font_description_free (font_desc);
/* Save some RAM */
g_free (frame->title);
frame->title = NULL;
}
}
static void
meta_frames_calc_geometry (MetaFrames *frames,
MetaUIFrame *frame,
MetaFrameGeometry *fgeom)
{
int width, height;
MetaFrameFlags flags;
MetaFrameType type;
MetaButtonLayout button_layout;
meta_core_get (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), frame->xwindow,
META_CORE_GET_CLIENT_WIDTH, &width,
META_CORE_GET_CLIENT_HEIGHT, &height,
META_CORE_GET_FRAME_FLAGS, &flags,
META_CORE_GET_FRAME_TYPE, &type,
META_CORE_GET_END);
meta_frames_ensure_layout (frames, frame);
meta_prefs_get_button_layout (&button_layout);
meta_theme_calc_geometry (meta_theme_get_current (),
type,
frame->text_height,
flags,
width, height,
&button_layout,
fgeom);
}
LOCAL_SYMBOL MetaFrames*
meta_frames_new (int screen_number)
{
GdkScreen *screen;
MetaFrames *frames;
screen = gdk_display_get_screen (gdk_display_get_default (),
screen_number);
frames = g_object_new (META_TYPE_FRAMES,
"screen", screen,
"type", GTK_WINDOW_POPUP,
NULL);
/* Put the window at an arbitrary offscreen location; the one place
* it can't be is at -100x-100, since the meta_window_new() will
* mistake it for a window created via meta_create_offscreen_window()
* and ignore it, and we need this window to get frame-synchronization
* messages so that GTK+'s style change handling works.
*/
gtk_window_move (GTK_WINDOW (frames), -200, -200);
gtk_window_resize (GTK_WINDOW (frames), 1, 1);
return frames;
}
/* In order to use a style with a window it has to be attached to that
* window. Actually, the colormaps just have to match, but since GTK+
* already takes care of making sure that its cheap to attach a style
* to multiple windows with the same colormap, we can just go ahead
* and attach separately for each window.
*/
static void
meta_frames_attach_style (MetaFrames *frames,
MetaUIFrame *frame)
{
gboolean has_frame;
char *variant = NULL;
if (frame->style != NULL)
g_object_unref (frame->style);
meta_core_get (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
frame->xwindow,
META_CORE_WINDOW_HAS_FRAME, &has_frame,
META_CORE_GET_THEME_VARIANT, &variant,
META_CORE_GET_END);
if (variant == NULL || strcmp(variant, "normal") == 0)
frame->style = g_object_ref (frames->normal_style);
else
frame->style = g_object_ref (meta_frames_get_theme_variant (frames,
variant));
}
LOCAL_SYMBOL void
meta_frames_manage_window (MetaFrames *frames,
Window xwindow,
GdkWindow *window)
{
MetaUIFrame *frame;
g_assert (window);
frame = g_new (MetaUIFrame, 1);
frame->window = window;
gdk_window_set_user_data (frame->window, frames);
frame->style = NULL;
/* Don't set event mask here, it's in frame.c */
frame->xwindow = xwindow;
frame->cache_style = NULL;
frame->layout = NULL;
frame->text_height = -1;
frame->title = NULL;
frame->shape_applied = FALSE;
frame->prelit_control = META_FRAME_CONTROL_NONE;
meta_core_grab_buttons (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), frame->xwindow);
g_hash_table_replace (frames->frames, &frame->xwindow, frame);
}
LOCAL_SYMBOL void
meta_frames_unmanage_window (MetaFrames *frames,
Window xwindow)
{
MetaUIFrame *frame;
frame = g_hash_table_lookup (frames->frames, &xwindow);
if (frame)
{
/* invalidating all caches ensures the frame
* is not actually referenced anymore
*/
invalidate_all_caches (frames);
/* restore the cursor */
meta_core_set_screen_cursor (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
frame->xwindow,
META_CURSOR_DEFAULT);
gdk_window_set_user_data (frame->window, NULL);
if (frames->last_motion_frame == frame)
frames->last_motion_frame = NULL;
g_hash_table_remove (frames->frames, &frame->xwindow);
g_object_unref (frame->style);
gdk_window_destroy (frame->window);
if (frame->layout)
g_object_unref (G_OBJECT (frame->layout));
if (frame->title)
g_free (frame->title);
g_free (frame);
}
else
meta_warning ("Frame 0x%lx not managed, can't unmanage\n", xwindow);
}
static MetaUIFrame*
meta_frames_lookup_window (MetaFrames *frames,
Window xwindow)
{
MetaUIFrame *frame;
frame = g_hash_table_lookup (frames->frames, &xwindow);
return frame;
}
LOCAL_SYMBOL void
meta_frames_get_borders (MetaFrames *frames,
Window xwindow,
MetaFrameBorders *borders)
{
MetaFrameFlags flags;
MetaUIFrame *frame;
MetaFrameType type;
frame = meta_frames_lookup_window (frames, xwindow);
if (frame == NULL)
meta_bug ("No such frame 0x%lx\n", xwindow);
meta_core_get (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), frame->xwindow,
META_CORE_GET_FRAME_FLAGS, &flags,
META_CORE_GET_FRAME_TYPE, &type,
META_CORE_GET_END);
g_return_if_fail (type < META_FRAME_TYPE_LAST);
meta_frames_ensure_layout (frames, frame);
/* We can't get the full geometry, because that depends on
* the client window size and probably we're being called
* by the core move/resize code to decide on the client
* window size
*/
meta_theme_get_frame_borders (meta_theme_get_current (),
type,
frame->text_height,
flags,
borders);
}
LOCAL_SYMBOL void
meta_frames_get_corner_radiuses (MetaFrames *frames,
Window xwindow,
float *top_left,
float *top_right,
float *bottom_left,
float *bottom_right)
{
MetaUIFrame *frame;
MetaFrameGeometry fgeom;
frame = meta_frames_lookup_window (frames, xwindow);
meta_frames_calc_geometry (frames, frame, &fgeom);
/* For compatibility with the code in get_visible_rect(), there's
* a mysterious sqrt() added to the corner radiuses:
*
* const float radius = sqrt(corner) + corner;
*
* It's unclear why the radius is calculated like this, but we
* need to be consistent with it.
*/
if (top_left)
*top_left = fgeom.top_left_corner_rounded_radius + sqrt(fgeom.top_left_corner_rounded_radius);
if (top_right)
*top_right = fgeom.top_right_corner_rounded_radius + sqrt(fgeom.top_right_corner_rounded_radius);
if (bottom_left)
*bottom_left = fgeom.bottom_left_corner_rounded_radius + sqrt(fgeom.bottom_left_corner_rounded_radius);
if (bottom_right)
*bottom_right = fgeom.bottom_right_corner_rounded_radius + sqrt(fgeom.bottom_right_corner_rounded_radius);
}
/* The client rectangle surrounds client window; it subtracts both
* the visible and invisible borders from the frame window's size.
*/
static void
get_client_rect (MetaFrameGeometry *fgeom,
int window_width,
int window_height,
cairo_rectangle_int_t *rect)
{
rect->x = fgeom->borders.total.left;
rect->y = fgeom->borders.total.top;
rect->width = window_width - fgeom->borders.total.right - rect->x;
rect->height = window_height - fgeom->borders.total.bottom - rect->y;
}
/* The visible frame rectangle surrounds the visible portion of the
* frame window; it subtracts only the invisible borders from the frame
* window's size.
*/
static void
get_visible_frame_rect (MetaFrameGeometry *fgeom,
int window_width,
int window_height,
cairo_rectangle_int_t *rect)
{
rect->x = fgeom->borders.invisible.left;
rect->y = fgeom->borders.invisible.top;
rect->width = window_width - fgeom->borders.invisible.right - rect->x;
rect->height = window_height - fgeom->borders.invisible.bottom - rect->y;
}
static cairo_region_t *
get_visible_region (MetaFrames *frames,
MetaUIFrame *frame,
MetaFrameGeometry *fgeom,
int window_width,
int window_height)
{
cairo_region_t *corners_region;
cairo_region_t *visible_region;
cairo_rectangle_int_t rect;
cairo_rectangle_int_t frame_rect;
corners_region = cairo_region_create ();
get_visible_frame_rect (fgeom, window_width, window_height, &frame_rect);
if (fgeom->top_left_corner_rounded_radius != 0)
{
const int corner = fgeom->top_left_corner_rounded_radius;
const float radius = sqrt(corner) + corner;
int i;
for (i=0; i<corner; i++)
{
const int width = floor(0.5 + radius - sqrt(radius*radius - (radius-(i+0.5))*(radius-(i+0.5))));
rect.x = frame_rect.x;
rect.y = frame_rect.y + i;
rect.width = width;
rect.height = 1;
cairo_region_union_rectangle (corners_region, &rect);
}
}
if (fgeom->top_right_corner_rounded_radius != 0)
{
const int corner = fgeom->top_right_corner_rounded_radius;
const float radius = sqrt(corner) + corner;
int i;
for (i=0; i<corner; i++)
{
const int width = floor(0.5 + radius - sqrt(radius*radius - (radius-(i+0.5))*(radius-(i+0.5))));
rect.x = frame_rect.x + frame_rect.width - width;
rect.y = frame_rect.y + i;
rect.width = width;
rect.height = 1;
cairo_region_union_rectangle (corners_region, &rect);
}
}
if (fgeom->bottom_left_corner_rounded_radius != 0)
{
const int corner = fgeom->bottom_left_corner_rounded_radius;
const float radius = sqrt(corner) + corner;
int i;
for (i=0; i<corner; i++)
{
const int width = floor(0.5 + radius - sqrt(radius*radius - (radius-(i+0.5))*(radius-(i+0.5))));
rect.x = frame_rect.x;
rect.y = frame_rect.y + frame_rect.height - i - 1;
rect.width = width;
rect.height = 1;
cairo_region_union_rectangle (corners_region, &rect);
}
}
if (fgeom->bottom_right_corner_rounded_radius != 0)
{
const int corner = fgeom->bottom_right_corner_rounded_radius;
const float radius = sqrt(corner) + corner;
int i;
for (i=0; i<corner; i++)
{
const int width = floor(0.5 + radius - sqrt(radius*radius - (radius-(i+0.5))*(radius-(i+0.5))));
rect.x = frame_rect.x + frame_rect.width - width;
rect.y = frame_rect.y + frame_rect.height - i - 1;
rect.width = width;
rect.height = 1;
cairo_region_union_rectangle (corners_region, &rect);
}
}
visible_region = cairo_region_create_rectangle (&frame_rect);
cairo_region_subtract (visible_region, corners_region);
cairo_region_destroy (corners_region);
return visible_region;
}
LOCAL_SYMBOL cairo_region_t *
meta_frames_get_frame_bounds (MetaFrames *frames,
Window xwindow,
int window_width,
int window_height)
{
MetaUIFrame *frame;
MetaFrameGeometry fgeom;
frame = meta_frames_lookup_window (frames, xwindow);
g_return_val_if_fail (frame != NULL, NULL);
meta_frames_calc_geometry (frames, frame, &fgeom);
return get_visible_region (frames, frame,
&fgeom,
window_width, window_height);
}
LOCAL_SYMBOL void
meta_frames_move_resize_frame (MetaFrames *frames,
Window xwindow,
int x,
int y,
int width,
int height)
{
MetaUIFrame *frame = meta_frames_lookup_window (frames, xwindow);
int old_width, old_height;
old_width = gdk_window_get_width (frame->window);
old_height = gdk_window_get_height (frame->window);
gdk_window_move_resize (frame->window, x, y, width, height);
if (old_width != width || old_height != height)
invalidate_whole_window (frames, frame);
}
LOCAL_SYMBOL void
meta_frames_queue_draw (MetaFrames *frames,
Window xwindow)
{
MetaUIFrame *frame;
frame = meta_frames_lookup_window (frames, xwindow);
invalidate_whole_window (frames, frame);
}