e4cf5c10cf95459bebcee1a2593fd626e305d6f8
[dana/openbox.git] / openbox / focus_cycle_popup.c
1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
2
3    focus_cycle_popup.c for the Openbox window manager
4    Copyright (c) 2006        Mikael Magnusson
5    Copyright (c) 2003-2007   Dana Jansens
6
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 2 of the License, or
10    (at your option) any later version.
11
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16
17    See the COPYING file for a copy of the GNU General Public License.
18 */
19
20 #include "focus_cycle_popup.h"
21 #include "popup.h"
22 #include "client.h"
23 #include "screen.h"
24 #include "focus.h"
25 #include "openbox.h"
26 #include "window.h"
27 #include "event.h"
28 #include "render/render.h"
29
30 #include <X11/Xlib.h>
31 #include <glib.h>
32
33 #define ICON_SIZE 40
34 #define ICON_HILITE_WIDTH 2
35 #define ICON_HILITE_MARGIN 1
36 #define OUTSIDE_BORDER 3
37 #define TEXT_BORDER 2
38
39 typedef struct _ObFocusCyclePopup       ObFocusCyclePopup;
40 typedef struct _ObFocusCyclePopupTarget ObFocusCyclePopupTarget;
41
42 struct _ObFocusCyclePopupTarget
43 {
44     ObClient *client;
45     gchar *text;
46     Window win;
47 };
48
49 struct _ObFocusCyclePopup
50 {
51     ObWindow obwin;
52     Window bg;
53
54     Window text;
55
56     GList *targets;
57     gint n_targets;
58
59     const ObFocusCyclePopupTarget *last_target;
60
61     gint maxtextw;
62
63     RrAppearance *a_bg;
64     RrAppearance *a_text;
65     RrAppearance *a_icon;
66
67     RrPixel32 *hilite_rgba;
68
69     gboolean mapped;
70 };
71
72 /*! This popup shows all possible windows */
73 static ObFocusCyclePopup popup;
74 /*! This popup shows a single window */
75 static ObIconPopup *single_popup;
76
77 static gchar *popup_get_name (ObClient *c);
78 static void   popup_setup    (ObFocusCyclePopup *p,
79                               gboolean create_targets,
80                               gboolean iconic_windows,
81                               gboolean all_desktops,
82                               gboolean dock_windows,
83                               gboolean desktop_windows);
84 static void   popup_render   (ObFocusCyclePopup *p,
85                               const ObClient *c);
86
87 static Window create_window(Window parent, guint bwidth, gulong mask,
88                             XSetWindowAttributes *attr)
89 {
90     return XCreateWindow(obt_display, parent, 0, 0, 1, 1, bwidth,
91                          RrDepth(ob_rr_inst), InputOutput,
92                          RrVisual(ob_rr_inst), mask, attr);
93 }
94
95 void focus_cycle_popup_startup(gboolean reconfig)
96 {
97     XSetWindowAttributes attrib;
98
99     single_popup = icon_popup_new();
100
101     popup.obwin.type = OB_WINDOW_CLASS_INTERNALWINDOW;
102     popup.a_bg = RrAppearanceCopy(ob_rr_theme->osd_hilite_bg);
103     popup.a_text = RrAppearanceCopy(ob_rr_theme->osd_hilite_label);
104     popup.a_icon = RrAppearanceCopy(ob_rr_theme->a_clear_tex);
105
106     popup.a_text->surface.parent = popup.a_bg;
107     popup.a_icon->surface.parent = popup.a_bg;
108
109     popup.a_icon->texture[0].type = RR_TEXTURE_RGBA;
110
111     RrAppearanceAddTextures(popup.a_bg, 1);
112     popup.a_bg->texture[0].type = RR_TEXTURE_RGBA;
113
114     attrib.override_redirect = True;
115     attrib.border_pixel=RrColorPixel(ob_rr_theme->osd_border_color);
116     popup.bg = create_window(RootWindow(obt_display, ob_screen),
117                              ob_rr_theme->obwidth,
118                              CWOverrideRedirect | CWBorderPixel, &attrib);
119
120     popup.text = create_window(popup.bg, 0, 0, NULL);
121
122     popup.targets = NULL;
123     popup.n_targets = 0;
124     popup.last_target = NULL;
125
126     popup.hilite_rgba = NULL;
127
128     XMapWindow(obt_display, popup.text);
129
130     stacking_add(INTERNALWINDOW_AS_WINDOW(&popup));
131     window_add(&popup.bg, INTERNALWINDOW_AS_WINDOW(&popup));
132 }
133
134 void focus_cycle_popup_shutdown(gboolean reconfig)
135 {
136     icon_popup_free(single_popup);
137
138     window_remove(popup.bg);
139     stacking_remove(INTERNALWINDOW_AS_WINDOW(&popup));
140
141     while(popup.targets) {
142         ObFocusCyclePopupTarget *t = popup.targets->data;
143
144         g_free(t->text);
145         XDestroyWindow(obt_display, t->win);
146
147         popup.targets = g_list_delete_link(popup.targets, popup.targets);
148     }
149
150     g_free(popup.hilite_rgba);
151     popup.hilite_rgba = NULL;
152
153     XDestroyWindow(obt_display, popup.text);
154     XDestroyWindow(obt_display, popup.bg);
155
156     RrAppearanceFree(popup.a_icon);
157     RrAppearanceFree(popup.a_text);
158     RrAppearanceFree(popup.a_bg);
159 }
160
161 static void popup_setup(ObFocusCyclePopup *p, gboolean create_targets,
162                         gboolean iconic_windows, gboolean all_desktops,
163                         gboolean dock_windows, gboolean desktop_windows)
164 {
165     gint maxwidth, n;
166     GList *it;
167
168     g_assert(p->targets == NULL);
169     g_assert(p->n_targets == 0);
170
171     /* make its width to be the width of all the possible titles */
172
173     /* build a list of all the valid focus targets and measure their strings,
174        and count them */
175     maxwidth = 0;
176     n = 0;
177     for (it = g_list_last(focus_order); it; it = g_list_previous(it)) {
178         ObClient *ft = it->data;
179
180         if (focus_valid_target(ft, TRUE,
181                                iconic_windows,
182                                all_desktops,
183                                dock_windows,
184                                desktop_windows))
185         {
186             gchar *text = popup_get_name(ft);
187
188             /* measure */
189             p->a_text->texture[0].data.text.string = text;
190             maxwidth = MAX(maxwidth, RrMinWidth(p->a_text));
191
192             if (!create_targets)
193                 g_free(text);
194             else {
195                 ObFocusCyclePopupTarget *t = g_new(ObFocusCyclePopupTarget, 1);
196
197                 t->client = ft;
198                 t->text = text;
199                 t->win = create_window(p->bg, 0, 0, NULL);
200
201                 XMapWindow(obt_display, t->win);
202
203                 p->targets = g_list_prepend(p->targets, t);
204                 ++n;
205             }
206         }
207     }
208
209     p->n_targets = n;
210     p->maxtextw = maxwidth;
211 }
212
213 static gchar *popup_get_name(ObClient *c)
214 {
215     ObClient *p;
216     gchar *title;
217     const gchar *desk = NULL;
218     gchar *ret;
219
220     /* find our highest direct parent */
221     p = client_search_top_direct_parent(c);
222
223     if (c->desktop != DESKTOP_ALL && c->desktop != screen_desktop)
224         desk = screen_desktop_names[c->desktop];
225
226     title = c->iconic ? c->icon_title : c->title;
227
228     /* use the transient's parent's title/icon if we don't have one */
229     if (p != c && title[0] == '\0')
230         title = p->iconic ? p->icon_title : p->title;
231
232     if (desk)
233         ret = g_strdup_printf("%s [%s]", title, desk);
234     else
235         ret = g_strdup(title);
236
237     return ret;
238 }
239
240 static void popup_render(ObFocusCyclePopup *p, const ObClient *c)
241 {
242     gint ml, mt, mr, mb;
243     gint l, t, r, b;
244     gint x, y, w, h;
245     Rect *screen_area = NULL;
246     gint icons_per_row;
247     gint icon_rows;
248     gint textx, texty, textw, texth;
249     gint rgbax, rgbay, rgbaw, rgbah;
250     gint icons_center_x;
251     gint innerw, innerh;
252     gint i;
253     GList *it;
254     const ObFocusCyclePopupTarget *newtarget;
255     gint newtargetx, newtargety;
256
257     screen_area = screen_physical_area_active();
258
259     /* get the outside margins */
260     RrMargins(p->a_bg, &ml, &mt, &mr, &mb);
261
262     /* get our outside borders */
263     l = ml + OUTSIDE_BORDER;
264     r = mr + OUTSIDE_BORDER;
265     t = mt + OUTSIDE_BORDER;
266     b = mb + OUTSIDE_BORDER;
267
268     /* get the icon pictures' sizes */
269     innerw = ICON_SIZE - (ICON_HILITE_WIDTH + ICON_HILITE_MARGIN) * 2;
270     innerh = ICON_SIZE - (ICON_HILITE_WIDTH + ICON_HILITE_MARGIN) * 2;
271
272     /* get the width from the text and keep it within limits */
273     w = l + r + p->maxtextw;
274     w = MIN(w, MAX(screen_area->width/3, POPUP_WIDTH)); /* max width */
275     w = MAX(w, POPUP_WIDTH); /* min width */
276
277     /* how many icons will fit in that row? make the width fit that */
278     w -= l + r;
279     icons_per_row = (w + ICON_SIZE - 1) / ICON_SIZE;
280     w = icons_per_row * ICON_SIZE + l + r;
281
282     /* how many rows do we need? */
283     icon_rows = (p->n_targets-1) / icons_per_row + 1;
284
285     /* get the text dimensions */
286     textw = w - l - r;
287     texth = RrMinHeight(p->a_text) + TEXT_BORDER * 2;
288
289     /* find the height of the dialog */
290     h = t + b + (icon_rows * ICON_SIZE) + (OUTSIDE_BORDER + texth);
291
292     /* get the position of the text */
293     textx = l;
294     texty = h - texth - b;
295
296     /* find the position for the popup (include the outer borders) */
297     x = screen_area->x + (screen_area->width -
298                           (w + ob_rr_theme->obwidth * 2)) / 2;
299     y = screen_area->y + (screen_area->height -
300                           (h + ob_rr_theme->obwidth * 2)) / 2;
301
302     /* get the dimensions of the target hilite texture */
303     rgbax = ml;
304     rgbay = mt;
305     rgbaw = w - ml - mr;
306     rgbah = h - mt - mb;
307
308     /* center the icons if there is less than one row */
309     if (icon_rows == 1)
310         icons_center_x = (w - p->n_targets * ICON_SIZE) / 2;
311     else
312         icons_center_x = 0;
313
314     if (!p->mapped) {
315         /* position the background but don't draw it*/
316         XMoveResizeWindow(obt_display, p->bg, x, y, w, h);
317
318         /* set up the hilite texture for the background */
319         p->a_bg->texture[0].data.rgba.width = rgbaw;
320         p->a_bg->texture[0].data.rgba.height = rgbah;
321         p->a_bg->texture[0].data.rgba.alpha = 0xff;
322         p->hilite_rgba = g_new(RrPixel32, rgbaw * rgbah);
323         p->a_bg->texture[0].data.rgba.data = p->hilite_rgba;
324
325         /* position the text, but don't draw it */
326         XMoveResizeWindow(obt_display, p->text, textx, texty, textw, texth);
327         p->a_text->surface.parentx = textx;
328         p->a_text->surface.parenty = texty;
329     }
330
331     /* find the focused target */
332     for (i = 0, it = p->targets; it; ++i, it = g_list_next(it)) {
333         const ObFocusCyclePopupTarget *target = it->data;
334         const gint row = i / icons_per_row; /* starting from 0 */
335         const gint col = i % icons_per_row; /* starting from 0 */
336
337         if (target->client == c) {
338             /* save the target */
339             newtarget = target;
340             newtargetx = icons_center_x + l + (col * ICON_SIZE);
341             newtargety = t + (row * ICON_SIZE);
342
343             if (!p->mapped)
344                 break; /* if we're not dimensioning, then we're done */
345         }
346     }
347
348     g_assert(newtarget != NULL);
349
350     /* create the hilite under the target icon */
351     {
352         RrPixel32 color;
353         gint i, j, o;
354
355         color = ((ob_rr_theme->osd_color->r & 0xff) << RrDefaultRedOffset) +
356             ((ob_rr_theme->osd_color->g & 0xff) << RrDefaultGreenOffset) +
357             ((ob_rr_theme->osd_color->b & 0xff) << RrDefaultBlueOffset);
358
359         o = 0;
360         for (i = 0; i < rgbah; ++i)
361             for (j = 0; j < rgbaw; ++j) {
362                 guchar a;
363                 const gint x = j + rgbax - newtargetx;
364                 const gint y = i + rgbay - newtargety;
365
366                 if (x < 0 || x >= ICON_SIZE ||
367                     y < 0 || y >= ICON_SIZE)
368                 {
369                     /* outside the target */
370                     a = 0x00;
371                 }
372                 else if (x < ICON_HILITE_WIDTH ||
373                          x >= ICON_SIZE - ICON_HILITE_WIDTH ||
374                          y < ICON_HILITE_WIDTH ||
375                          y >= ICON_SIZE - ICON_HILITE_WIDTH)
376                 {
377                     /* the border of the target */
378                     a = 0x88;
379                 }
380                 else {
381                     /* the background of the target */
382                     a = 0x22;
383                 }
384
385                 p->hilite_rgba[o++] =
386                     color + (a << RrDefaultAlphaOffset);
387             }
388     }
389
390     /* * * draw everything * * */
391
392     /* draw the background */
393     RrPaint(p->a_bg, p->bg, w, h);
394
395     /* draw the icons */
396     for (i = 0, it = p->targets; it; ++i, it = g_list_next(it)) {
397         const ObFocusCyclePopupTarget *target = it->data;
398
399         /* have to redraw the targetted icon and last targetted icon,
400            they can pick up the hilite changes in the backgroud */
401         if (!p->mapped || newtarget == target || p->last_target == target) {
402             const ObClientIcon *icon;
403             const gint row = i / icons_per_row; /* starting from 0 */
404             const gint col = i % icons_per_row; /* starting from 0 */
405             gint innerx, innery;
406
407             /* find the dimensions of the icon inside it */
408             innerx = icons_center_x + l + (col * ICON_SIZE);
409             innerx += ICON_HILITE_WIDTH + ICON_HILITE_MARGIN;
410             innery = t + (row * ICON_SIZE);
411             innery += ICON_HILITE_WIDTH + ICON_HILITE_MARGIN;
412
413             /* move the icon */
414             XMoveResizeWindow(obt_display, target->win,
415                               innerx, innery, innerw, innerh);
416
417             /* get the icon from the client */
418             icon = client_icon(target->client, innerw, innerh);
419             p->a_icon->texture[0].data.rgba.width = icon->width;
420             p->a_icon->texture[0].data.rgba.height = icon->height;
421             p->a_icon->texture[0].data.rgba.alpha =
422                 target->client->iconic ? OB_ICONIC_ALPHA : 0xff;
423             p->a_icon->texture[0].data.rgba.data = icon->data;
424
425             /* draw the icon */
426             p->a_icon->surface.parentx = innerx;
427             p->a_icon->surface.parenty = innery;
428             RrPaint(p->a_icon, target->win, innerw, innerh);
429         }
430     }
431
432     /* draw the text */
433     p->a_text->texture[0].data.text.string = newtarget->text;
434     p->a_text->surface.parentx = textx;
435     p->a_text->surface.parenty = texty;
436     RrPaint(p->a_text, p->text, textw, texth);
437
438     p->last_target = newtarget;
439
440     g_free(screen_area);
441 }
442
443 void focus_cycle_popup_show(ObClient *c, gboolean iconic_windows,
444                             gboolean all_desktops, gboolean dock_windows,
445                             gboolean desktop_windows)
446 {
447     g_assert(c != NULL);
448
449     /* do this stuff only when the dialog is first showing */
450     if (!popup.mapped)
451         popup_setup(&popup, TRUE, iconic_windows, all_desktops,
452                     dock_windows, desktop_windows);
453     g_assert(popup.targets != NULL);
454
455     popup_render(&popup, c);
456
457     if (!popup.mapped) {
458         /* show the dialog */
459         XMapWindow(obt_display, popup.bg);
460         XFlush(obt_display);
461         popup.mapped = TRUE;
462         screen_hide_desktop_popup();
463     }
464 }
465
466 void focus_cycle_popup_hide(void)
467 {
468     gulong ignore_start;
469
470     ignore_start = event_start_ignore_all_enters();
471
472     XUnmapWindow(obt_display, popup.bg);
473     XFlush(obt_display);
474
475     event_end_ignore_all_enters(ignore_start);
476
477     popup.mapped = FALSE;
478
479     while(popup.targets) {
480         ObFocusCyclePopupTarget *t = popup.targets->data;
481
482         g_free(t->text);
483         XDestroyWindow(obt_display, t->win);
484
485         popup.targets = g_list_delete_link(popup.targets, popup.targets);
486     }
487     popup.n_targets = 0;
488     popup.last_target = NULL;
489
490     g_free(popup.hilite_rgba);
491     popup.hilite_rgba = NULL;
492 }
493
494 void focus_cycle_popup_single_show(struct _ObClient *c,
495                                    gboolean iconic_windows,
496                                    gboolean all_desktops,
497                                    gboolean dock_windows,
498                                    gboolean desktop_windows)
499 {
500     gchar *text;
501
502     g_assert(c != NULL);
503
504     /* do this stuff only when the dialog is first showing */
505     if (!popup.mapped) {
506         Rect *a;
507
508         popup_setup(&popup, FALSE, iconic_windows, all_desktops,
509                     dock_windows, desktop_windows);
510         g_assert(popup.targets == NULL);
511
512         /* position the popup */
513         a = screen_physical_area_active();
514         icon_popup_position(single_popup, CenterGravity,
515                             a->x + a->width / 2, a->y + a->height / 2);
516         icon_popup_height(single_popup, POPUP_HEIGHT);
517         icon_popup_min_width(single_popup, POPUP_WIDTH);
518         icon_popup_max_width(single_popup, MAX(a->width/3, POPUP_WIDTH));
519         icon_popup_text_width(single_popup, popup.maxtextw);
520         g_free(a);
521     }
522
523     text = popup_get_name(c);
524     icon_popup_show(single_popup, text, client_icon(c, ICON_SIZE, ICON_SIZE));
525     g_free(text);
526     screen_hide_desktop_popup();
527 }
528
529 void focus_cycle_popup_single_hide(void)
530 {
531     icon_popup_hide(single_popup);
532 }