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nsxivwindow.c

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1/* sxiv: window.c
2 * Copyright (c) 2012 Bert Muennich <be.muennich at googlemail.com>
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17 */
18
19#define _POSIX_C_SOURCE 200112L
20#define _WINDOW_CONFIG
21
22#include <string.h>
23#include <locale.h>
24#include <X11/Xutil.h>
25#include <X11/cursorfont.h>
26
27#include "options.h"
28#include "util.h"
29#include "window.h"
30#include "config.h"
31
32enum {
33 H_TEXT_PAD = 5,
34 V_TEXT_PAD = 1
35};
36
37static Cursor carrow;
38static Cursor cnone;
39static Cursor chand;
40static Cursor cwatch;
41static GC gc;
42
43Atom wm_delete_win;
44
45struct {
46 int ascent;
47 int descent;
48 XFontStruct *xfont;
49 XFontSet set;
50} font;
51
52void win_init_font(Display *dpy, const char *fontstr) {
53 int n;
54 char *def, **missing;
55
56 font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
57 if (missing)
58 XFreeStringList(missing);
59 if (font.set) {
60 XFontStruct **xfonts;
61 char **font_names;
62
63 font.ascent = font.descent = 0;
64 XExtentsOfFontSet(font.set);
65 n = XFontsOfFontSet(font.set, &xfonts, &font_names);
66 while (n--) {
67 font.ascent = MAX(font.ascent, (*xfonts)->ascent);
68 font.descent = MAX(font.descent,(*xfonts)->descent);
69 xfonts++;
70 }
71 } else {
72 if ((font.xfont = XLoadQueryFont(dpy, fontstr)) == NULL &&
73 (font.xfont = XLoadQueryFont(dpy, "fixed")) == NULL)
74 {
75 die("could not load font: %s", fontstr);
76 }
77 font.ascent = font.xfont->ascent;
78 font.descent = font.xfont->descent;
79 }
80}
81
82unsigned long win_alloc_color(win_t *win, const char *name) {
83 XColor col;
84
85 if (win == NULL)
86 return 0UL;
87 if (XAllocNamedColor(win->env.dpy,
88 DefaultColormap(win->env.dpy, win->env.scr),
89 name, &col, &col) == 0)
90 {
91 die("could not allocate color: %s", name);
92 }
93 return col.pixel;
94}
95
96void win_init(win_t *win) {
97 win_env_t *e;
98
99 if (win == NULL)
100 return;
101
102 e = &win->env;
103 if ((e->dpy = XOpenDisplay(NULL)) == NULL)
104 die("could not open display");
105
106 e->scr = DefaultScreen(e->dpy);
107 e->scrw = DisplayWidth(e->dpy, e->scr);
108 e->scrh = DisplayHeight(e->dpy, e->scr);
109 e->vis = DefaultVisual(e->dpy, e->scr);
110 e->cmap = DefaultColormap(e->dpy, e->scr);
111 e->depth = DefaultDepth(e->dpy, e->scr);
112
113 win->black = BlackPixel(e->dpy, e->scr);
114 win->white = WhitePixel(e->dpy, e->scr);
115
116 win->bgcol = win_alloc_color(win, WIN_BG_COLOR);
117 win->selcol = win_alloc_color(win, SEL_COLOR);
118 win->barbgcol = win_alloc_color(win, BAR_BG_COLOR);
119 win->barfgcol = win_alloc_color(win, BAR_FG_COLOR);
120
121 win->xwin = 0;
122 win->pm = 0;
123 win->fullscreen = false;
124 win->barh = 0;
125 win->lbar = NULL;
126 win->rbar = NULL;
127
128 if (setlocale(LC_CTYPE, "") == NULL || XSupportsLocale() == 0)
129 warn("no locale support");
130
131 win_init_font(e->dpy, BAR_FONT);
132}
133
134void win_set_sizehints(win_t *win) {
135 XSizeHints sizehints;
136
137 if (win == NULL || win->xwin == None)
138 return;
139
140 sizehints.flags = PMinSize | PMaxSize;
141 sizehints.min_width = win->w;
142 sizehints.max_width = win->w;
143 sizehints.min_height = win->h + win->barh;
144 sizehints.max_height = win->h + win->barh;
145 XSetWMNormalHints(win->env.dpy, win->xwin, &sizehints);
146}
147
148void win_open(win_t *win) {
149 win_env_t *e;
150 XClassHint classhint;
151 XColor col;
152 char none_data[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
153 Pixmap none;
154 int gmask;
155
156 if (win == NULL)
157 return;
158
159 e = &win->env;
160
161 /* determine window offsets, width & height */
162 if (options->geometry == NULL)
163 gmask = 0;
164 else
165 gmask = XParseGeometry(options->geometry, &win->x, &win->y,
166 &win->w, &win->h);
167 if ((gmask & WidthValue) == 0)
168 win->w = WIN_WIDTH;
169 if (win->w > e->scrw)
170 win->w = e->scrw;
171 if ((gmask & HeightValue) == 0)
172 win->h = WIN_HEIGHT;
173 if (win->h > e->scrh)
174 win->h = e->scrh;
175 if ((gmask & XValue) == 0)
176 win->x = (e->scrw - win->w) / 2;
177 else if ((gmask & XNegative) != 0)
178 win->x += e->scrw - win->w;
179 if ((gmask & YValue) == 0)
180 win->y = (e->scrh - win->h) / 2;
181 else if ((gmask & YNegative) != 0)
182 win->y += e->scrh - win->h;
183
184 win->xwin = XCreateWindow(e->dpy, RootWindow(e->dpy, e->scr),
185 win->x, win->y, win->w, win->h, 0,
186 e->depth, InputOutput, e->vis, 0, None);
187 if (win->xwin == None)
188 die("could not create window");
189
190 XSelectInput(e->dpy, win->xwin, StructureNotifyMask | KeyPressMask |
191 ButtonPressMask | ButtonReleaseMask | PointerMotionMask);
192
193 carrow = XCreateFontCursor(e->dpy, XC_left_ptr);
194 chand = XCreateFontCursor(e->dpy, XC_fleur);
195 cwatch = XCreateFontCursor(e->dpy, XC_watch);
196
197 if (XAllocNamedColor(e->dpy, DefaultColormap(e->dpy, e->scr), "black",
198 &col, &col) == 0)
199 {
200 die("could not allocate color: black");
201 }
202 none = XCreateBitmapFromData(e->dpy, win->xwin, none_data, 8, 8);
203 cnone = XCreatePixmapCursor(e->dpy, none, none, &col, &col, 0, 0);
204
205 gc = XCreateGC(e->dpy, win->xwin, 0, None);
206
207 win_set_title(win, "sxiv");
208
209 classhint.res_name = "sxiv";
210 classhint.res_class = "sxiv";
211 XSetClassHint(e->dpy, win->xwin, &classhint);
212
213 if (!options->hide_bar) {
214 win->barh = font.ascent + font.descent + 2 * V_TEXT_PAD;
215 win->h -= win->barh;
216 }
217
218 if (options->fixed_win)
219 win_set_sizehints(win);
220
221 XMapWindow(e->dpy, win->xwin);
222 XFlush(e->dpy);
223
224 wm_delete_win = XInternAtom(e->dpy, "WM_DELETE_WINDOW", False);
225 XSetWMProtocols(e->dpy, win->xwin, &wm_delete_win, 1);
226
227 if (options->fullscreen)
228 win_toggle_fullscreen(win);
229}
230
231void win_close(win_t *win) {
232 if (win == NULL || win->xwin == None)
233 return;
234
235 XFreeCursor(win->env.dpy, carrow);
236 XFreeCursor(win->env.dpy, cnone);
237 XFreeCursor(win->env.dpy, chand);
238 XFreeCursor(win->env.dpy, cwatch);
239
240 XFreeGC(win->env.dpy, gc);
241
242 XDestroyWindow(win->env.dpy, win->xwin);
243 XCloseDisplay(win->env.dpy);
244}
245
246bool win_configure(win_t *win, XConfigureEvent *c) {
247 bool changed;
248
249 if (win == NULL)
250 return false;
251
252 changed = win->w != c->width || win->h + win->barh != c->height;
253
254 win->x = c->x;
255 win->y = c->y;
256 win->w = c->width;
257 win->h = c->height - win->barh;
258 win->bw = c->border_width;
259
260 return changed;
261}
262
263bool win_moveresize(win_t *win, int x, int y, unsigned int w, unsigned int h) {
264 if (win == NULL || win->xwin == None)
265 return false;
266
267 x = MAX(0, x);
268 y = MAX(0, y);
269 w = MIN(w, win->env.scrw - 2 * win->bw);
270 h = MIN(h, win->env.scrh - 2 * win->bw);
271
272 if (win->x == x && win->y == y && win->w == w && win->h + win->barh == h)
273 return false;
274
275 win->x = x;
276 win->y = y;
277 win->w = w;
278 win->h = h - win->barh;
279
280 if (options->fixed_win)
281 win_set_sizehints(win);
282
283 XMoveResizeWindow(win->env.dpy, win->xwin, x, y, w, h);
284
285 return true;
286}
287
288void win_toggle_fullscreen(win_t *win) {
289 XEvent ev;
290 XClientMessageEvent *cm;
291
292 if (win == NULL || win->xwin == None)
293 return;
294
295 win->fullscreen = !win->fullscreen;
296
297 memset(&ev, 0, sizeof(ev));
298 ev.type = ClientMessage;
299
300 cm = &ev.xclient;
301 cm->window = win->xwin;
302 cm->message_type = XInternAtom(win->env.dpy, "_NET_WM_STATE", False);
303 cm->format = 32;
304 cm->data.l[0] = win->fullscreen;
305 cm->data.l[1] = XInternAtom(win->env.dpy, "_NET_WM_STATE_FULLSCREEN", False);
306 cm->data.l[2] = cm->data.l[3] = 0;
307
308 XSendEvent(win->env.dpy, DefaultRootWindow(win->env.dpy), False,
309 SubstructureNotifyMask | SubstructureRedirectMask, &ev);
310}
311
312void win_toggle_bar(win_t *win) {
313 if (win == NULL || win->xwin == None)
314 return;
315
316 if (win->barh != 0) {
317 win->h += win->barh;
318 win->barh = 0;
319 } else {
320 win->barh = font.ascent + font.descent + 2 * V_TEXT_PAD;
321 win->h -= win->barh;
322 }
323}
324
325void win_clear(win_t *win) {
326 win_env_t *e;
327
328 if (win == NULL || win->xwin == None)
329 return;
330
331 e = &win->env;
332
333 if (win->pm != None)
334 XFreePixmap(e->dpy, win->pm);
335 win->pm = XCreatePixmap(e->dpy, win->xwin, e->scrw, e->scrh, e->depth);
336
337 XSetForeground(e->dpy, gc, win->fullscreen ? win->black : win->bgcol);
338 XFillRectangle(e->dpy, win->pm, gc, 0, 0, e->scrw, e->scrh);
339}
340
341int win_textwidth(const char *text, unsigned int len) {
342 XRectangle r;
343
344 if (font.set) {
345 XmbTextExtents(font.set, text, len, NULL, &r);
346 return r.width;
347 } else {
348 return XTextWidth(font.xfont, text, len);
349 }
350}
351void win_draw_bar(win_t *win) {
352 win_env_t *e;
353 int len, x, y, w, tw = 0, seplen;
354 const char *rt;
355
356 if (win == NULL || win->xwin == None)
357 return;
358
359 e = &win->env;
360 x = H_TEXT_PAD;
361 y = win->h + font.ascent + V_TEXT_PAD;
362 w = win->w - 2 * H_TEXT_PAD;
363
364 XSetForeground(e->dpy, gc, win->barbgcol);
365 XFillRectangle(e->dpy, win->pm, gc, 0, win->h, win->w, win->barh);
366
367 XSetForeground(e->dpy, gc, win->barfgcol);
368 XSetBackground(e->dpy, gc, win->barbgcol);
369
370 if (win->lbar != NULL) {
371 len = strlen(win->lbar);
372 while (len > 0 && (tw = win_textwidth(win->lbar, len)) > w)
373 len--;
374 w -= tw + 2 * H_TEXT_PAD;
375 if (font.set)
376 XmbDrawString(e->dpy, win->pm, font.set, gc, x, y, win->lbar, len);
377 else
378 XDrawString(e->dpy, win->pm, gc, x, y, win->lbar, len);
379 }
380 if (win->rbar != NULL) {
381 len = strlen(win->rbar);
382 seplen = strlen(BAR_SEPARATOR);
383 rt = win->rbar;
384 while (len > 0 && (tw = win_textwidth(rt, len)) > w) {
385 rt = strstr(rt, BAR_SEPARATOR);
386 if (rt != NULL) {
387 rt += seplen;
388 len = strlen(rt);
389 } else {
390 len = 0;
391 }
392 }
393 if (len > 0) {
394 x = win->w - tw - H_TEXT_PAD;
395 if (font.set)
396 XmbDrawString(e->dpy, win->pm, font.set, gc, x, y, rt, len);
397 else
398 XDrawString(e->dpy, win->pm, gc, x, y, rt, len);
399 }
400 }
401}
402
403void win_draw(win_t *win) {
404 if (win == NULL || win->xwin == None)
405 return;
406
407 win_draw_bar(win);
408
409 XSetWindowBackgroundPixmap(win->env.dpy, win->xwin, win->pm);
410 XClearWindow(win->env.dpy, win->xwin);
411}
412
413void win_draw_rect(win_t *win, Pixmap pm, int x, int y, int w, int h,
414 bool fill, int lw, unsigned long col) {
415 XGCValues gcval;
416
417 if (win == NULL || pm == None)
418 return;
419
420 gcval.line_width = lw;
421 gcval.foreground = col;
422 XChangeGC(win->env.dpy, gc, GCForeground | GCLineWidth, &gcval);
423
424 if (fill)
425 XFillRectangle(win->env.dpy, pm, gc, x, y, w, h);
426 else
427 XDrawRectangle(win->env.dpy, pm, gc, x, y, w, h);
428}
429
430void win_set_title(win_t *win, const char *title) {
431 if (win == NULL || win->xwin == None)
432 return;
433
434 if (title == NULL)
435 title = "sxiv";
436
437 XStoreName(win->env.dpy, win->xwin, title);
438 XSetIconName(win->env.dpy, win->xwin, title);
439
440 XChangeProperty(win->env.dpy, win->xwin,
441 XInternAtom(win->env.dpy, "_NET_WM_NAME", False),
442 XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
443 PropModeReplace, (unsigned char *) title, strlen(title));
444 XChangeProperty(win->env.dpy, win->xwin,
445 XInternAtom(win->env.dpy, "_NET_WM_ICON_NAME", False),
446 XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
447 PropModeReplace, (unsigned char *) title, strlen(title));
448}
449
450void win_set_bar_info(win_t *win, const char *li, const char *ri) {
451 if (win != NULL) {
452 win->lbar = li;
453 win->rbar = ri;
454 }
455}
456
457void win_set_cursor(win_t *win, cursor_t cursor) {
458 if (win == NULL || win->xwin == None)
459 return;
460
461 switch (cursor) {
462 case CURSOR_NONE:
463 XDefineCursor(win->env.dpy, win->xwin, cnone);
464 break;
465 case CURSOR_HAND:
466 XDefineCursor(win->env.dpy, win->xwin, chand);
467 break;
468 case CURSOR_WATCH:
469 XDefineCursor(win->env.dpy, win->xwin, cwatch);
470 break;
471 case CURSOR_ARROW:
472 default:
473 XDefineCursor(win->env.dpy, win->xwin, carrow);
474 break;
475 }
476
477 XFlush(win->env.dpy);
478}