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/* Copyright 2011-2013 Bert Muennich
*
* This file is part of sxiv.
*
* sxiv 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.
*
* sxiv 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 sxiv. If not, see <http://www.gnu.org/licenses/>.
*/
#include "sxiv.h"
#define _WINDOW_CONFIG
#include "config.h"
#include "icon/data.h"
#include "utf8.h"
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <X11/cursorfont.h>
#include <X11/Xatom.h>
enum {
H_TEXT_PAD = 5,
V_TEXT_PAD = 1
};
static struct {
int name;
Cursor icon;
} cursors[CURSOR_COUNT] = {
{ XC_left_ptr }, { XC_dotbox }, { XC_watch },
{ XC_sb_left_arrow }, { XC_sb_right_arrow }
};
static GC gc;
static XftFont *font;
static int fontheight;
static int barheight;
Atom atoms[ATOM_COUNT];
static Bool fs_support;
static Bool fs_warned;
void win_init_font(const win_env_t *e, const char *fontstr)
{
if ((font = XftFontOpenName(e->dpy, e->scr, fontstr)) == NULL)
error(EXIT_FAILURE, 0, "Error loading font '%s'", fontstr);
fontheight = font->ascent + font->descent;
barheight = fontheight + 2 * V_TEXT_PAD;
}
void win_alloc_color(const win_env_t *e, const char *name, XftColor *col)
{
if (!XftColorAllocName(e->dpy, DefaultVisual(e->dpy, e->scr),
DefaultColormap(e->dpy, e->scr), name, col))
{
error(EXIT_FAILURE, 0, "Error allocating color '%s'", name);
}
}
void win_check_wm_support(Display *dpy, Window root)
{
int format;
long offset = 0, length = 16;
Atom *data, type;
unsigned long i, nitems, bytes_left;
Bool found = False;
while (!found && length > 0) {
if (XGetWindowProperty(dpy, root, atoms[ATOM__NET_SUPPORTED],
offset, length, False, XA_ATOM, &type, &format,
&nitems, &bytes_left, (unsigned char**) &data))
{
break;
}
if (type == XA_ATOM && format == 32) {
for (i = 0; i < nitems; i++) {
if (data[i] == atoms[ATOM__NET_WM_STATE_FULLSCREEN]) {
found = True;
fs_support = True;
break;
}
}
}
XFree(data);
offset += nitems;
length = MIN(length, bytes_left / 4);
}
}
#define INIT_ATOM_(atom) \
atoms[ATOM_##atom] = XInternAtom(e->dpy, #atom, False);
void win_init(win_t *win)
{
win_env_t *e;
memset(win, 0, sizeof(win_t));
e = &win->env;
if ((e->dpy = XOpenDisplay(NULL)) == NULL)
error(EXIT_FAILURE, 0, "Error opening X display");
e->scr = DefaultScreen(e->dpy);
e->scrw = DisplayWidth(e->dpy, e->scr);
e->scrh = DisplayHeight(e->dpy, e->scr);
e->vis = DefaultVisual(e->dpy, e->scr);
e->cmap = DefaultColormap(e->dpy, e->scr);
e->depth = DefaultDepth(e->dpy, e->scr);
if (setlocale(LC_CTYPE, "") == NULL || XSupportsLocale() == 0)
error(0, 0, "No locale support");
win_init_font(e, BAR_FONT);
win_alloc_color(e, WIN_BG_COLOR, &win->bgcol);
win_alloc_color(e, WIN_FS_COLOR, &win->fscol);
win_alloc_color(e, SEL_COLOR, &win->selcol);
win_alloc_color(e, BAR_BG_COLOR, &win->bar.bgcol);
win_alloc_color(e, BAR_FG_COLOR, &win->bar.fgcol);
win->bar.l.size = BAR_L_LEN;
win->bar.r.size = BAR_R_LEN;
/* 3 padding bytes needed by utf8_decode */
win->bar.l.buf = emalloc(win->bar.l.size + 3);
win->bar.r.buf = emalloc(win->bar.r.size + 3);
win->bar.h = options->hide_bar ? 0 : barheight;
INIT_ATOM_(WM_DELETE_WINDOW);
INIT_ATOM_(_NET_WM_NAME);
INIT_ATOM_(_NET_WM_ICON_NAME);
INIT_ATOM_(_NET_WM_ICON);
INIT_ATOM_(_NET_WM_STATE);
INIT_ATOM_(_NET_WM_STATE_FULLSCREEN);
INIT_ATOM_(_NET_SUPPORTED);
win_check_wm_support(e->dpy, RootWindow(e->dpy, e->scr));
}
void win_open(win_t *win)
{
int c, i, j, n;
long parent;
win_env_t *e;
XClassHint classhint;
unsigned long *icon_data;
XColor col;
Cursor *cnone = &cursors[CURSOR_NONE].icon;
char none_data[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
Pixmap none;
int gmask;
XSizeHints sizehints;
Bool fullscreen = options->fullscreen && fs_support;
e = &win->env;
parent = options->embed != 0 ? options->embed : RootWindow(e->dpy, e->scr);
sizehints.flags = PWinGravity;
sizehints.win_gravity = NorthWestGravity;
/* determine window offsets, width & height */
if (options->geometry == NULL)
gmask = 0;
else
gmask = XParseGeometry(options->geometry, &win->x, &win->y,
&win->w, &win->h);
if ((gmask & WidthValue) != 0)
sizehints.flags |= USSize;
else
win->w = WIN_WIDTH;
if ((gmask & HeightValue) != 0)
sizehints.flags |= USSize;
else
win->h = WIN_HEIGHT;
if ((gmask & XValue) != 0) {
if ((gmask & XNegative) != 0) {
win->x += e->scrw - win->w;
sizehints.win_gravity = NorthEastGravity;
}
sizehints.flags |= USPosition;
} else {
win->x = 0;
}
if ((gmask & YValue) != 0) {
if ((gmask & YNegative) != 0) {
win->y += e->scrh - win->h;
sizehints.win_gravity = sizehints.win_gravity == NorthEastGravity
? SouthEastGravity : SouthWestGravity;
}
sizehints.flags |= USPosition;
} else {
win->y = 0;
}
win->xwin = XCreateWindow(e->dpy, parent,
win->x, win->y, win->w, win->h, 0,
e->depth, InputOutput, e->vis, 0, NULL);
if (win->xwin == None)
error(EXIT_FAILURE, 0, "Error creating X window");
XSelectInput(e->dpy, win->xwin,
ButtonReleaseMask | ButtonPressMask | KeyPressMask |
PointerMotionMask | StructureNotifyMask);
for (i = 0; i < ARRLEN(cursors); i++) {
if (i != CURSOR_NONE)
cursors[i].icon = XCreateFontCursor(e->dpy, cursors[i].name);
}
if (XAllocNamedColor(e->dpy, DefaultColormap(e->dpy, e->scr), "black",
&col, &col) == 0)
{
error(EXIT_FAILURE, 0, "Error allocating color 'black'");
}
none = XCreateBitmapFromData(e->dpy, win->xwin, none_data, 8, 8);
*cnone = XCreatePixmapCursor(e->dpy, none, none, &col, &col, 0, 0);
gc = XCreateGC(e->dpy, win->xwin, 0, None);
n = icons[ARRLEN(icons)-1].size;
icon_data = emalloc((n * n + 2) * sizeof(*icon_data));
for (i = 0; i < ARRLEN(icons); i++) {
n = 0;
icon_data[n++] = icons[i].size;
icon_data[n++] = icons[i].size;
for (j = 0; j < icons[i].cnt; j++) {
for (c = icons[i].data[j] >> 4; c >= 0; c--)
icon_data[n++] = icon_colors[icons[i].data[j] & 0x0F];
}
XChangeProperty(e->dpy, win->xwin,
atoms[ATOM__NET_WM_ICON], XA_CARDINAL, 32,
i == 0 ? PropModeReplace : PropModeAppend,
(unsigned char *) icon_data, n);
}
free(icon_data);
win_set_title(win, "sxiv");
classhint.res_class = "Sxiv";
classhint.res_name = options->res_name != NULL ? options->res_name : "sxiv";
XSetClassHint(e->dpy, win->xwin, &classhint);
XSetWMProtocols(e->dpy, win->xwin, &atoms[ATOM_WM_DELETE_WINDOW], 1);
sizehints.width = win->w;
sizehints.height = win->h;
sizehints.x = win->x;
sizehints.y = win->y;
XSetWMNormalHints(win->env.dpy, win->xwin, &sizehints);
win->h -= win->bar.h;
win->buf.w = e->scrw;
win->buf.h = e->scrh;
win->buf.pm = XCreatePixmap(e->dpy, win->xwin,
win->buf.w, win->buf.h, e->depth);
XSetForeground(e->dpy, gc, fullscreen ? win->fscol.pixel : win->bgcol.pixel);
XFillRectangle(e->dpy, win->buf.pm, gc, 0, 0, win->buf.w, win->buf.h);
XSetWindowBackgroundPixmap(e->dpy, win->xwin, win->buf.pm);
XMapWindow(e->dpy, win->xwin);
XFlush(e->dpy);
if (fullscreen)
win_toggle_fullscreen(win);
}
CLEANUP void win_close(win_t *win)
{
int i;
for (i = 0; i < ARRLEN(cursors); i++)
XFreeCursor(win->env.dpy, cursors[i].icon);
XFreeGC(win->env.dpy, gc);
XDestroyWindow(win->env.dpy, win->xwin);
XCloseDisplay(win->env.dpy);
}
bool win_configure(win_t *win, XConfigureEvent *c)
{
bool changed;
changed = win->w != c->width || win->h + win->bar.h != c->height;
win->x = c->x;
win->y = c->y;
win->w = c->width;
win->h = c->height - win->bar.h;
win->bw = c->border_width;
return changed;
}
void win_toggle_fullscreen(win_t *win)
{
XEvent ev;
XClientMessageEvent *cm;
if (!fs_support) {
if (!fs_warned) {
error(0, 0, "No fullscreen support");
fs_warned = True;
}
return;
}
win->fullscreen = !win->fullscreen;
memset(&ev, 0, sizeof(ev));
ev.type = ClientMessage;
cm = &ev.xclient;
cm->window = win->xwin;
cm->message_type = atoms[ATOM__NET_WM_STATE];
cm->format = 32;
cm->data.l[0] = win->fullscreen;
cm->data.l[1] = atoms[ATOM__NET_WM_STATE_FULLSCREEN];
cm->data.l[2] = cm->data.l[3] = 0;
XSendEvent(win->env.dpy, DefaultRootWindow(win->env.dpy), False,
SubstructureNotifyMask | SubstructureRedirectMask, &ev);
}
void win_toggle_bar(win_t *win)
{
if (win->bar.h != 0) {
win->h += win->bar.h;
win->bar.h = 0;
} else {
win->bar.h = barheight;
win->h -= win->bar.h;
}
}
void win_clear(win_t *win)
{
win_env_t *e;
e = &win->env;
if (win->w > win->buf.w || win->h + win->bar.h > win->buf.h) {
XFreePixmap(e->dpy, win->buf.pm);
win->buf.w = MAX(win->buf.w, win->w);
win->buf.h = MAX(win->buf.h, win->h + win->bar.h);
win->buf.pm = XCreatePixmap(e->dpy, win->xwin,
win->buf.w, win->buf.h, e->depth);
}
XSetForeground(e->dpy, gc, win->fullscreen ? win->fscol.pixel : win->bgcol.pixel);
XFillRectangle(e->dpy, win->buf.pm, gc, 0, 0, win->buf.w, win->buf.h);
}
#define TEXTWIDTH(win, text, len) \
win_draw_text(win, NULL, NULL, 0, 0, text, len, 0)
int win_draw_text(win_t *win, XftDraw *d, XftColor *color, int x, int y,
char *text, int len, int w)
{
int err, tw = 0;
char *t, *next;
uint32_t rune;
XftFont *f;
FcCharSet *fccharset;
XGlyphInfo ext;
for (t = text; t - text < len; t = next) {
next = utf8_decode(t, &rune, &err);
if (XftCharExists(win->env.dpy, font, rune)) {
f = font;
} else { /* fallback font */
fccharset = FcCharSetCreate();
FcCharSetAddChar(fccharset, rune);
f = XftFontOpen(win->env.dpy, win->env.scr, FC_CHARSET, FcTypeCharSet,
fccharset, FC_SCALABLE, FcTypeBool, FcTrue, NULL);
FcCharSetDestroy(fccharset);
}
XftTextExtentsUtf8(win->env.dpy, f, (XftChar8*)t, next - t, &ext);
tw += ext.xOff;
if (tw <= w) {
XftDrawStringUtf8(d, color, f, x, y, (XftChar8*)t, next - t);
x += ext.xOff;
}
if (f != font)
XftFontClose(win->env.dpy, f);
}
return tw;
}
void win_draw_bar(win_t *win)
{
int len, x, y, w, tw;
win_env_t *e;
win_bar_t *l, *r;
XftDraw *d;
if ((l = &win->bar.l)->buf == NULL || (r = &win->bar.r)->buf == NULL)
return;
e = &win->env;
y = win->h + font->ascent + V_TEXT_PAD;
w = win->w - 2*H_TEXT_PAD;
d = XftDrawCreate(e->dpy, win->buf.pm, DefaultVisual(e->dpy, e->scr),
DefaultColormap(e->dpy, e->scr));
XSetForeground(e->dpy, gc, win->bar.bgcol.pixel);
XFillRectangle(e->dpy, win->buf.pm, gc, 0, win->h, win->w, win->bar.h);
XSetForeground(e->dpy, gc, win->bar.fgcol.pixel);
XSetBackground(e->dpy, gc, win->bar.bgcol.pixel);
if ((len = strlen(r->buf)) > 0) {
if ((tw = TEXTWIDTH(win, r->buf, len)) > w)
return;
x = win->w - tw - H_TEXT_PAD;
w -= tw;
win_draw_text(win, d, &win->bar.fgcol, x, y, r->buf, len, tw);
}
if ((len = strlen(l->buf)) > 0) {
x = H_TEXT_PAD;
w -= 2 * H_TEXT_PAD; /* gap between left and right parts */
win_draw_text(win, d, &win->bar.fgcol, x, y, l->buf, len, w);
}
XftDrawDestroy(d);
}
void win_draw(win_t *win)
{
if (win->bar.h > 0)
win_draw_bar(win);
XSetWindowBackgroundPixmap(win->env.dpy, win->xwin, win->buf.pm);
XClearWindow(win->env.dpy, win->xwin);
XFlush(win->env.dpy);
}
void win_draw_rect(win_t *win, int x, int y, int w, int h, bool fill, int lw,
unsigned long col)
{
XGCValues gcval;
gcval.line_width = lw;
gcval.foreground = col;
XChangeGC(win->env.dpy, gc, GCForeground | GCLineWidth, &gcval);
if (fill)
XFillRectangle(win->env.dpy, win->buf.pm, gc, x, y, w, h);
else
XDrawRectangle(win->env.dpy, win->buf.pm, gc, x, y, w, h);
}
void win_set_title(win_t *win, const char *title)
{
if (title == NULL)
title = "sxiv";
XStoreName(win->env.dpy, win->xwin, title);
XSetIconName(win->env.dpy, win->xwin, title);
XChangeProperty(win->env.dpy, win->xwin, atoms[ATOM__NET_WM_NAME],
XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
PropModeReplace, (unsigned char *) title, strlen(title));
XChangeProperty(win->env.dpy, win->xwin, atoms[ATOM__NET_WM_ICON_NAME],
XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
PropModeReplace, (unsigned char *) title, strlen(title));
}
void win_set_cursor(win_t *win, cursor_t cursor)
{
if (cursor >= 0 && cursor < ARRLEN(cursors)) {
XDefineCursor(win->env.dpy, win->xwin, cursors[cursor].icon);
XFlush(win->env.dpy);
}
}
void win_cursor_pos(win_t *win, int *x, int *y)
{
int i;
unsigned int ui;
Window w;
if (!XQueryPointer(win->env.dpy, win->xwin, &w, &w, &i, &i, x, y, &ui))
*x = *y = 0;
}