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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->white = WhitePixel(e->dpy, e->scr);
114 win->bgcol = win_alloc_color(win, WIN_BG_COLOR);
115 win->fscol = win_alloc_color(win, WIN_FS_COLOR);
116 win->selcol = win_alloc_color(win, SEL_COLOR);
117 win->barbgcol = win_alloc_color(win, BAR_BG_COLOR);
118 win->barfgcol = win_alloc_color(win, BAR_FG_COLOR);
119
120 win->xwin = 0;
121 win->pm = 0;
122 win->fullscreen = false;
123 win->barh = 0;
124 win->lbar = NULL;
125 win->rbar = NULL;
126
127 if (setlocale(LC_CTYPE, "") == NULL || XSupportsLocale() == 0)
128 warn("no locale support");
129
130 win_init_font(e->dpy, BAR_FONT);
131
132 wm_delete_win = XInternAtom(e->dpy, "WM_DELETE_WINDOW", False);
133}
134
135void win_set_sizehints(win_t *win) {
136 XSizeHints sizehints;
137
138 if (win == NULL || win->xwin == None)
139 return;
140
141 sizehints.flags = PMinSize | PMaxSize;
142 sizehints.min_width = win->w;
143 sizehints.max_width = win->w;
144 sizehints.min_height = win->h + win->barh;
145 sizehints.max_height = win->h + win->barh;
146 XSetWMNormalHints(win->env.dpy, win->xwin, &sizehints);
147}
148
149void win_open(win_t *win) {
150 win_env_t *e;
151 XClassHint classhint;
152 XColor col;
153 char none_data[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
154 Pixmap none;
155 int gmask;
156
157 if (win == NULL)
158 return;
159
160 e = &win->env;
161
162 /* determine window offsets, width & height */
163 if (options->geometry == NULL)
164 gmask = 0;
165 else
166 gmask = XParseGeometry(options->geometry, &win->x, &win->y,
167 &win->w, &win->h);
168 if ((gmask & WidthValue) == 0)
169 win->w = WIN_WIDTH;
170 if (win->w > e->scrw)
171 win->w = e->scrw;
172 if ((gmask & HeightValue) == 0)
173 win->h = WIN_HEIGHT;
174 if (win->h > e->scrh)
175 win->h = e->scrh;
176 if ((gmask & XValue) == 0)
177 win->x = (e->scrw - win->w) / 2;
178 else if ((gmask & XNegative) != 0)
179 win->x += e->scrw - win->w;
180 if ((gmask & YValue) == 0)
181 win->y = (e->scrh - win->h) / 2;
182 else if ((gmask & YNegative) != 0)
183 win->y += e->scrh - win->h;
184
185 win->xwin = XCreateWindow(e->dpy, RootWindow(e->dpy, e->scr),
186 win->x, win->y, win->w, win->h, 0,
187 e->depth, InputOutput, e->vis, 0, None);
188 if (win->xwin == None)
189 die("could not create window");
190
191 XSelectInput(e->dpy, win->xwin, StructureNotifyMask | KeyPressMask |
192 ButtonPressMask | ButtonReleaseMask | PointerMotionMask);
193
194 carrow = XCreateFontCursor(e->dpy, XC_left_ptr);
195 chand = XCreateFontCursor(e->dpy, XC_fleur);
196 cwatch = XCreateFontCursor(e->dpy, XC_watch);
197
198 if (XAllocNamedColor(e->dpy, DefaultColormap(e->dpy, e->scr), "black",
199 &col, &col) == 0)
200 {
201 die("could not allocate color: black");
202 }
203 none = XCreateBitmapFromData(e->dpy, win->xwin, none_data, 8, 8);
204 cnone = XCreatePixmapCursor(e->dpy, none, none, &col, &col, 0, 0);
205
206 gc = XCreateGC(e->dpy, win->xwin, 0, None);
207
208 win_set_title(win, "sxiv");
209
210 classhint.res_name = "sxiv";
211 classhint.res_class = "Sxiv";
212 XSetClassHint(e->dpy, win->xwin, &classhint);
213
214 XSetWMProtocols(e->dpy, win->xwin, &wm_delete_win, 1);
215
216 if (!options->hide_bar) {
217 win->barh = font.ascent + font.descent + 2 * V_TEXT_PAD;
218 win->h -= win->barh;
219 }
220
221 if (options->fixed_win)
222 win_set_sizehints(win);
223
224 XMapWindow(e->dpy, win->xwin);
225 XFlush(e->dpy);
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->fscol : win->bgcol);
338 XFillRectangle(e->dpy, win->pm, gc, 0, 0, e->scrw, e->scrh);
339}
340
341void win_draw_bar(win_t *win) {
342 win_env_t *e;
343 int len, x, y, w, tw = 0, seplen;
344 const char *rt;
345
346 if (win == NULL || win->xwin == None)
347 return;
348
349 e = &win->env;
350 x = H_TEXT_PAD;
351 y = win->h + font.ascent + V_TEXT_PAD;
352 w = win->w - 2 * H_TEXT_PAD;
353
354 XSetForeground(e->dpy, gc, win->barbgcol);
355 XFillRectangle(e->dpy, win->pm, gc, 0, win->h, win->w, win->barh);
356
357 XSetForeground(e->dpy, gc, win->barfgcol);
358 XSetBackground(e->dpy, gc, win->barbgcol);
359
360 if (win->lbar != NULL) {
361 len = strlen(win->lbar);
362 while (len > 0 && (tw = win_textwidth(win->lbar, len, false)) > w)
363 len--;
364 w -= tw + 2 * H_TEXT_PAD;
365 if (font.set)
366 XmbDrawString(e->dpy, win->pm, font.set, gc, x, y, win->lbar, len);
367 else
368 XDrawString(e->dpy, win->pm, gc, x, y, win->lbar, len);
369 }
370 if (win->rbar != NULL) {
371 len = strlen(win->rbar);
372 seplen = strlen(BAR_SEPARATOR);
373 rt = win->rbar;
374 while (len > 0 && (tw = win_textwidth(rt, len, false)) > w) {
375 rt = strstr(rt, BAR_SEPARATOR);
376 if (rt != NULL) {
377 rt += seplen;
378 len = strlen(rt);
379 } else {
380 len = 0;
381 }
382 }
383 if (len > 0) {
384 x = win->w - tw - H_TEXT_PAD;
385 if (font.set)
386 XmbDrawString(e->dpy, win->pm, font.set, gc, x, y, rt, len);
387 else
388 XDrawString(e->dpy, win->pm, gc, x, y, rt, len);
389 }
390 }
391}
392
393void win_draw(win_t *win) {
394 if (win == NULL || win->xwin == None)
395 return;
396
397 if (win->barh > 0)
398 win_draw_bar(win);
399
400 XSetWindowBackgroundPixmap(win->env.dpy, win->xwin, win->pm);
401 XClearWindow(win->env.dpy, win->xwin);
402}
403
404void win_draw_rect(win_t *win, Pixmap pm, int x, int y, int w, int h,
405 bool fill, int lw, unsigned long col) {
406 XGCValues gcval;
407
408 if (win == NULL || pm == None)
409 return;
410
411 gcval.line_width = lw;
412 gcval.foreground = col;
413 XChangeGC(win->env.dpy, gc, GCForeground | GCLineWidth, &gcval);
414
415 if (fill)
416 XFillRectangle(win->env.dpy, pm, gc, x, y, w, h);
417 else
418 XDrawRectangle(win->env.dpy, pm, gc, x, y, w, h);
419}
420
421int win_textwidth(const char *text, unsigned int len, bool with_padding) {
422 XRectangle r;
423 int padding = with_padding ? 2 * H_TEXT_PAD : 0;
424
425 if (font.set) {
426 XmbTextExtents(font.set, text, len, NULL, &r);
427 return r.width + padding;
428 } else {
429 return XTextWidth(font.xfont, text, len) + padding;
430 }
431}
432
433void win_set_title(win_t *win, const char *title) {
434 if (win == NULL || win->xwin == None)
435 return;
436
437 if (title == NULL)
438 title = "sxiv";
439
440 XStoreName(win->env.dpy, win->xwin, title);
441 XSetIconName(win->env.dpy, win->xwin, title);
442
443 XChangeProperty(win->env.dpy, win->xwin,
444 XInternAtom(win->env.dpy, "_NET_WM_NAME", False),
445 XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
446 PropModeReplace, (unsigned char *) title, strlen(title));
447 XChangeProperty(win->env.dpy, win->xwin,
448 XInternAtom(win->env.dpy, "_NET_WM_ICON_NAME", False),
449 XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
450 PropModeReplace, (unsigned char *) title, strlen(title));
451}
452
453void win_set_bar_info(win_t *win, const char *li, const char *ri) {
454 if (win != NULL) {
455 win->lbar = li;
456 win->rbar = ri;
457 }
458}
459
460void win_set_cursor(win_t *win, cursor_t cursor) {
461 if (win == NULL || win->xwin == None)
462 return;
463
464 switch (cursor) {
465 case CURSOR_NONE:
466 XDefineCursor(win->env.dpy, win->xwin, cnone);
467 break;
468 case CURSOR_HAND:
469 XDefineCursor(win->env.dpy, win->xwin, chand);
470 break;
471 case CURSOR_WATCH:
472 XDefineCursor(win->env.dpy, win->xwin, cwatch);
473 break;
474 case CURSOR_ARROW:
475 default:
476 XDefineCursor(win->env.dpy, win->xwin, carrow);
477 break;
478 }
479
480 XFlush(win->env.dpy);
481}