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nsxivwindow.c

480 lines · 11.7 KB · 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
133void win_set_sizehints(win_t *win) {
134 XSizeHints sizehints;
135
136 if (win == NULL || win->xwin == None)
137 return;
138
139 sizehints.flags = PMinSize | PMaxSize;
140 sizehints.min_width = win->w;
141 sizehints.max_width = win->w;
142 sizehints.min_height = win->h + win->barh;
143 sizehints.max_height = win->h + win->barh;
144 XSetWMNormalHints(win->env.dpy, win->xwin, &sizehints);
145}
146
147void win_open(win_t *win) {
148 win_env_t *e;
149 XClassHint classhint;
150 XColor col;
151 char none_data[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
152 Pixmap none;
153 int gmask;
154
155 if (win == NULL)
156 return;
157
158 e = &win->env;
159
160 /* determine window offsets, width & height */
161 if (options->geometry == NULL)
162 gmask = 0;
163 else
164 gmask = XParseGeometry(options->geometry, &win->x, &win->y,
165 &win->w, &win->h);
166 if ((gmask & WidthValue) == 0)
167 win->w = WIN_WIDTH;
168 if (win->w > e->scrw)
169 win->w = e->scrw;
170 if ((gmask & HeightValue) == 0)
171 win->h = WIN_HEIGHT;
172 if (win->h > e->scrh)
173 win->h = e->scrh;
174 if ((gmask & XValue) == 0)
175 win->x = (e->scrw - win->w) / 2;
176 else if ((gmask & XNegative) != 0)
177 win->x += e->scrw - win->w;
178 if ((gmask & YValue) == 0)
179 win->y = (e->scrh - win->h) / 2;
180 else if ((gmask & YNegative) != 0)
181 win->y += e->scrh - win->h;
182
183 win->xwin = XCreateWindow(e->dpy, RootWindow(e->dpy, e->scr),
184 win->x, win->y, win->w, win->h, 0,
185 e->depth, InputOutput, e->vis, 0, None);
186 if (win->xwin == None)
187 die("could not create window");
188
189 XSelectInput(e->dpy, win->xwin, StructureNotifyMask | KeyPressMask |
190 ButtonPressMask | ButtonReleaseMask | PointerMotionMask);
191
192 carrow = XCreateFontCursor(e->dpy, XC_left_ptr);
193 chand = XCreateFontCursor(e->dpy, XC_fleur);
194 cwatch = XCreateFontCursor(e->dpy, XC_watch);
195
196 if (XAllocNamedColor(e->dpy, DefaultColormap(e->dpy, e->scr), "black",
197 &col, &col) == 0)
198 {
199 die("could not allocate color: black");
200 }
201 none = XCreateBitmapFromData(e->dpy, win->xwin, none_data, 8, 8);
202 cnone = XCreatePixmapCursor(e->dpy, none, none, &col, &col, 0, 0);
203
204 gc = XCreateGC(e->dpy, win->xwin, 0, None);
205
206 win_set_title(win, "sxiv");
207
208 classhint.res_name = "sxiv";
209 classhint.res_class = "Sxiv";
210 XSetClassHint(e->dpy, win->xwin, &classhint);
211
212 if (!options->hide_bar) {
213 win->barh = font.ascent + font.descent + 2 * V_TEXT_PAD;
214 win->h -= win->barh;
215 }
216
217 if (options->fixed_win)
218 win_set_sizehints(win);
219
220 XMapWindow(e->dpy, win->xwin);
221 XFlush(e->dpy);
222
223 wm_delete_win = XInternAtom(e->dpy, "WM_DELETE_WINDOW", False);
224 XSetWMProtocols(e->dpy, win->xwin, &wm_delete_win, 1);
225
226 if (options->fullscreen)
227 win_toggle_fullscreen(win);
228}
229
230void win_close(win_t *win) {
231 if (win == NULL || win->xwin == None)
232 return;
233
234 XFreeCursor(win->env.dpy, carrow);
235 XFreeCursor(win->env.dpy, cnone);
236 XFreeCursor(win->env.dpy, chand);
237 XFreeCursor(win->env.dpy, cwatch);
238
239 XFreeGC(win->env.dpy, gc);
240
241 XDestroyWindow(win->env.dpy, win->xwin);
242 XCloseDisplay(win->env.dpy);
243}
244
245bool win_configure(win_t *win, XConfigureEvent *c) {
246 bool changed;
247
248 if (win == NULL)
249 return false;
250
251 changed = win->w != c->width || win->h + win->barh != c->height;
252
253 win->x = c->x;
254 win->y = c->y;
255 win->w = c->width;
256 win->h = c->height - win->barh;
257 win->bw = c->border_width;
258
259 return changed;
260}
261
262bool win_moveresize(win_t *win, int x, int y, unsigned int w, unsigned int h) {
263 if (win == NULL || win->xwin == None)
264 return false;
265
266 x = MAX(0, x);
267 y = MAX(0, y);
268 w = MIN(w, win->env.scrw - 2 * win->bw);
269 h = MIN(h, win->env.scrh - 2 * win->bw);
270
271 if (win->x == x && win->y == y && win->w == w && win->h + win->barh == h)
272 return false;
273
274 win->x = x;
275 win->y = y;
276 win->w = w;
277 win->h = h - win->barh;
278
279 if (options->fixed_win)
280 win_set_sizehints(win);
281
282 XMoveResizeWindow(win->env.dpy, win->xwin, x, y, w, h);
283
284 return true;
285}
286
287void win_toggle_fullscreen(win_t *win) {
288 XEvent ev;
289 XClientMessageEvent *cm;
290
291 if (win == NULL || win->xwin == None)
292 return;
293
294 win->fullscreen = !win->fullscreen;
295
296 memset(&ev, 0, sizeof(ev));
297 ev.type = ClientMessage;
298
299 cm = &ev.xclient;
300 cm->window = win->xwin;
301 cm->message_type = XInternAtom(win->env.dpy, "_NET_WM_STATE", False);
302 cm->format = 32;
303 cm->data.l[0] = win->fullscreen;
304 cm->data.l[1] = XInternAtom(win->env.dpy, "_NET_WM_STATE_FULLSCREEN", False);
305 cm->data.l[2] = cm->data.l[3] = 0;
306
307 XSendEvent(win->env.dpy, DefaultRootWindow(win->env.dpy), False,
308 SubstructureNotifyMask | SubstructureRedirectMask, &ev);
309}
310
311void win_toggle_bar(win_t *win) {
312 if (win == NULL || win->xwin == None)
313 return;
314
315 if (win->barh != 0) {
316 win->h += win->barh;
317 win->barh = 0;
318 } else {
319 win->barh = font.ascent + font.descent + 2 * V_TEXT_PAD;
320 win->h -= win->barh;
321 }
322}
323
324void win_clear(win_t *win) {
325 win_env_t *e;
326
327 if (win == NULL || win->xwin == None)
328 return;
329
330 e = &win->env;
331
332 if (win->pm != None)
333 XFreePixmap(e->dpy, win->pm);
334 win->pm = XCreatePixmap(e->dpy, win->xwin, e->scrw, e->scrh, e->depth);
335
336 XSetForeground(e->dpy, gc, win->fullscreen ? win->fscol : win->bgcol);
337 XFillRectangle(e->dpy, win->pm, gc, 0, 0, e->scrw, e->scrh);
338}
339
340void win_draw_bar(win_t *win) {
341 win_env_t *e;
342 int len, x, y, w, tw = 0, seplen;
343 const char *rt;
344
345 if (win == NULL || win->xwin == None)
346 return;
347
348 e = &win->env;
349 x = H_TEXT_PAD;
350 y = win->h + font.ascent + V_TEXT_PAD;
351 w = win->w - 2 * H_TEXT_PAD;
352
353 XSetForeground(e->dpy, gc, win->barbgcol);
354 XFillRectangle(e->dpy, win->pm, gc, 0, win->h, win->w, win->barh);
355
356 XSetForeground(e->dpy, gc, win->barfgcol);
357 XSetBackground(e->dpy, gc, win->barbgcol);
358
359 if (win->lbar != NULL) {
360 len = strlen(win->lbar);
361 while (len > 0 && (tw = win_textwidth(win->lbar, len, false)) > w)
362 len--;
363 w -= tw + 2 * H_TEXT_PAD;
364 if (font.set)
365 XmbDrawString(e->dpy, win->pm, font.set, gc, x, y, win->lbar, len);
366 else
367 XDrawString(e->dpy, win->pm, gc, x, y, win->lbar, len);
368 }
369 if (win->rbar != NULL) {
370 len = strlen(win->rbar);
371 seplen = strlen(BAR_SEPARATOR);
372 rt = win->rbar;
373 while (len > 0 && (tw = win_textwidth(rt, len, false)) > w) {
374 rt = strstr(rt, BAR_SEPARATOR);
375 if (rt != NULL) {
376 rt += seplen;
377 len = strlen(rt);
378 } else {
379 len = 0;
380 }
381 }
382 if (len > 0) {
383 x = win->w - tw - H_TEXT_PAD;
384 if (font.set)
385 XmbDrawString(e->dpy, win->pm, font.set, gc, x, y, rt, len);
386 else
387 XDrawString(e->dpy, win->pm, gc, x, y, rt, len);
388 }
389 }
390}
391
392void win_draw(win_t *win) {
393 if (win == NULL || win->xwin == None)
394 return;
395
396 if (win->barh > 0)
397 win_draw_bar(win);
398
399 XSetWindowBackgroundPixmap(win->env.dpy, win->xwin, win->pm);
400 XClearWindow(win->env.dpy, win->xwin);
401}
402
403void win_draw_rect(win_t *win, Pixmap pm, int x, int y, int w, int h,
404 bool fill, int lw, unsigned long col) {
405 XGCValues gcval;
406
407 if (win == NULL || pm == None)
408 return;
409
410 gcval.line_width = lw;
411 gcval.foreground = col;
412 XChangeGC(win->env.dpy, gc, GCForeground | GCLineWidth, &gcval);
413
414 if (fill)
415 XFillRectangle(win->env.dpy, pm, gc, x, y, w, h);
416 else
417 XDrawRectangle(win->env.dpy, pm, gc, x, y, w, h);
418}
419
420int win_textwidth(const char *text, unsigned int len, bool with_padding) {
421 XRectangle r;
422 int padding = with_padding ? 2 * H_TEXT_PAD : 0;
423
424 if (font.set) {
425 XmbTextExtents(font.set, text, len, NULL, &r);
426 return r.width + padding;
427 } else {
428 return XTextWidth(font.xfont, text, len) + padding;
429 }
430}
431
432void win_set_title(win_t *win, const char *title) {
433 if (win == NULL || win->xwin == None)
434 return;
435
436 if (title == NULL)
437 title = "sxiv";
438
439 XStoreName(win->env.dpy, win->xwin, title);
440 XSetIconName(win->env.dpy, win->xwin, title);
441
442 XChangeProperty(win->env.dpy, win->xwin,
443 XInternAtom(win->env.dpy, "_NET_WM_NAME", False),
444 XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
445 PropModeReplace, (unsigned char *) title, strlen(title));
446 XChangeProperty(win->env.dpy, win->xwin,
447 XInternAtom(win->env.dpy, "_NET_WM_ICON_NAME", False),
448 XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
449 PropModeReplace, (unsigned char *) title, strlen(title));
450}
451
452void win_set_bar_info(win_t *win, const char *li, const char *ri) {
453 if (win != NULL) {
454 win->lbar = li;
455 win->rbar = ri;
456 }
457}
458
459void win_set_cursor(win_t *win, cursor_t cursor) {
460 if (win == NULL || win->xwin == None)
461 return;
462
463 switch (cursor) {
464 case CURSOR_NONE:
465 XDefineCursor(win->env.dpy, win->xwin, cnone);
466 break;
467 case CURSOR_HAND:
468 XDefineCursor(win->env.dpy, win->xwin, chand);
469 break;
470 case CURSOR_WATCH:
471 XDefineCursor(win->env.dpy, win->xwin, cwatch);
472 break;
473 case CURSOR_ARROW:
474 default:
475 XDefineCursor(win->env.dpy, win->xwin, carrow);
476 break;
477 }
478
479 XFlush(win->env.dpy);
480}