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[mikachu/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 /* Size of the hilite box around a window's icon */
34 #define HILITE_SIZE 40
35 /* Width of the outer ring around the hilite box */
36 #define HILITE_WIDTH 2
37 /* Space between the outer ring around the hilite box and the icon inside it */
38 #define HILITE_MARGIN 1
39 /* Total distance from the edge of the hilite box to the icon inside it */
40 #define HILITE_OFFSET (HILITE_WIDTH + HILITE_MARGIN)
41 /* Size of the icons, which can appear inside or outside of a hilite box */
42 #define ICON_SIZE (HILITE_SIZE - 2*HILITE_OFFSET)
43 /* Margin area around the outside of the dialog */
44 #define OUTSIDE_BORDER 3
45 /* Margin area around the text */
46 #define TEXT_BORDER 2
47
48 typedef struct _ObFocusCyclePopup       ObFocusCyclePopup;
49 typedef struct _ObFocusCyclePopupTarget ObFocusCyclePopupTarget;
50
51 struct _ObFocusCyclePopupTarget
52 {
53     ObClient *client;
54     gchar *text;
55     Window iconwin;
56     /* This is used when the popup is in list mode */
57     Window textwin;
58 };
59
60 struct _ObFocusCyclePopup
61 {
62     ObWindow obwin;
63     Window bg;
64
65     /* This is used when the popup is in icon mode */
66     Window icon_mode_text;
67
68     GList *targets;
69     gint n_targets;
70
71     const ObFocusCyclePopupTarget *last_target;
72
73     gint maxtextw;
74
75     RrAppearance *a_bg;
76     RrAppearance *a_text;
77     RrAppearance *a_hilite_text;
78     RrAppearance *a_icon;
79
80     gboolean mapped;
81 };
82
83 /*! This popup shows all possible windows */
84 static ObFocusCyclePopup popup;
85 /*! This popup shows a single window */
86 static ObIconPopup *single_popup;
87
88 static gchar *popup_get_name (ObClient *c);
89 static void   popup_setup    (ObFocusCyclePopup *p,
90                               gboolean create_targets,
91                               gboolean iconic_windows,
92                               gboolean all_desktops,
93                               gboolean dock_windows,
94                               gboolean desktop_windows);
95 static void   popup_render   (ObFocusCyclePopup *p,
96                               const ObClient *c,
97                               ObFocusCyclePopupMode mode);
98
99 static Window create_window(Window parent, guint bwidth, gulong mask,
100                             XSetWindowAttributes *attr)
101 {
102     return XCreateWindow(obt_display, parent, 0, 0, 1, 1, bwidth,
103                          RrDepth(ob_rr_inst), InputOutput,
104                          RrVisual(ob_rr_inst), mask, attr);
105 }
106
107 void focus_cycle_popup_startup(gboolean reconfig)
108 {
109     XSetWindowAttributes attrib;
110     RrPixel32 *p;
111
112     single_popup = icon_popup_new();
113
114     popup.obwin.type = OB_WINDOW_CLASS_INTERNAL;
115     popup.a_bg = RrAppearanceCopy(ob_rr_theme->osd_hilite_bg);
116     popup.a_hilite_text = RrAppearanceCopy(ob_rr_theme->osd_hilite_label);
117     popup.a_text = RrAppearanceCopy(ob_rr_theme->a_unfocused_label);
118     popup.a_icon = RrAppearanceCopy(ob_rr_theme->a_clear);
119
120     popup.a_hilite_text->surface.parent = popup.a_bg;
121     popup.a_text->surface.parent = popup.a_bg;
122     popup.a_icon->surface.parent = popup.a_bg;
123
124     popup.a_text->texture[0].data.text.justify = RR_JUSTIFY_LEFT;
125     popup.a_hilite_text->texture[0].data.text.justify = RR_JUSTIFY_LEFT;
126
127     /* 2 textures. texture[0] is the icon.  texture[1] is the hilight, and
128        may or may not be used */
129     RrAppearanceAddTextures(popup.a_icon, 2);
130
131     popup.a_icon->texture[0].type = RR_TEXTURE_RGBA;
132
133     attrib.override_redirect = True;
134     attrib.border_pixel=RrColorPixel(ob_rr_theme->osd_border_color);
135     popup.bg = create_window(obt_root(ob_screen), ob_rr_theme->obwidth,
136                              CWOverrideRedirect | CWBorderPixel, &attrib);
137
138     /* create the text window used for the icon-mode popup */
139     popup.icon_mode_text = create_window(popup.bg, 0, 0, NULL);
140
141     popup.targets = NULL;
142     popup.n_targets = 0;
143     popup.last_target = NULL;
144
145     /* set up the hilite texture for the icon */
146     popup.a_icon->texture[1].data.rgba.width = HILITE_SIZE;
147     popup.a_icon->texture[1].data.rgba.height = HILITE_SIZE;
148     popup.a_icon->texture[1].data.rgba.alpha = 0xff;
149     p = g_new(RrPixel32, HILITE_SIZE * HILITE_SIZE);
150     popup.a_icon->texture[1].data.rgba.data = p;
151
152     /* create the hilite under the target icon */
153     {
154         RrPixel32 color;
155         gint x, y, o;
156
157         color = ((ob_rr_theme->osd_color->r & 0xff) << RrDefaultRedOffset) +
158             ((ob_rr_theme->osd_color->g & 0xff) << RrDefaultGreenOffset) +
159             ((ob_rr_theme->osd_color->b & 0xff) << RrDefaultBlueOffset);
160
161         o = 0;
162         for (x = 0; x < HILITE_SIZE; x++)
163             for (y = 0; y < HILITE_SIZE; y++) {
164                 guchar a;
165
166                 if (x < HILITE_WIDTH ||
167                     x >= HILITE_SIZE - HILITE_WIDTH ||
168                     y < HILITE_WIDTH ||
169                     y >= HILITE_SIZE - HILITE_WIDTH)
170                 {
171                     /* the border of the target */
172                     a = 0x88;
173                 }
174                 else {
175                     /* the background of the target */
176                     a = 0x22;
177                 }
178
179                 p[o++] = color + (a << RrDefaultAlphaOffset);
180             }
181     }
182
183     stacking_add(INTERNAL_AS_WINDOW(&popup));
184     window_add(&popup.bg, INTERNAL_AS_WINDOW(&popup));
185 }
186
187 void focus_cycle_popup_shutdown(gboolean reconfig)
188 {
189     icon_popup_free(single_popup);
190
191     window_remove(popup.bg);
192     stacking_remove(INTERNAL_AS_WINDOW(&popup));
193
194     while(popup.targets) {
195         ObFocusCyclePopupTarget *t = popup.targets->data;
196
197         g_free(t->text);
198         XDestroyWindow(obt_display, t->iconwin);
199         XDestroyWindow(obt_display, t->textwin);
200
201         popup.targets = g_list_delete_link(popup.targets, popup.targets);
202     }
203
204     g_free(popup.a_icon->texture[1].data.rgba.data);
205     popup.a_icon->texture[1].data.rgba.data = NULL;
206
207     XDestroyWindow(obt_display, popup.icon_mode_text);
208     XDestroyWindow(obt_display, popup.bg);
209
210     RrAppearanceFree(popup.a_icon);
211     RrAppearanceFree(popup.a_hilite_text);
212     RrAppearanceFree(popup.a_text);
213     RrAppearanceFree(popup.a_bg);
214 }
215
216 static void popup_setup(ObFocusCyclePopup *p, gboolean create_targets,
217                         gboolean iconic_windows, gboolean all_desktops,
218                         gboolean dock_windows, gboolean desktop_windows)
219 {
220     gint maxwidth, n;
221     GList *it;
222
223     g_assert(p->targets == NULL);
224     g_assert(p->n_targets == 0);
225
226     /* make its width to be the width of all the possible titles */
227
228     /* build a list of all the valid focus targets and measure their strings,
229        and count them */
230     maxwidth = 0;
231     n = 0;
232     for (it = g_list_last(focus_order); it; it = g_list_previous(it)) {
233         ObClient *ft = it->data;
234
235         if (focus_valid_target(ft, TRUE,
236                                iconic_windows,
237                                all_desktops,
238                                dock_windows,
239                                desktop_windows))
240         {
241             gchar *text = popup_get_name(ft);
242
243             /* measure */
244             p->a_text->texture[0].data.text.string = text;
245             maxwidth = MAX(maxwidth, RrMinWidth(p->a_text));
246
247             if (!create_targets)
248                 g_free(text);
249             else {
250                 ObFocusCyclePopupTarget *t = g_new(ObFocusCyclePopupTarget, 1);
251
252                 t->client = ft;
253                 t->text = text;
254                 t->iconwin = create_window(p->bg, 0, 0, NULL);
255                 t->textwin = create_window(p->bg, 0, 0, NULL);
256
257                 XMapWindow(obt_display, t->iconwin);
258
259                 p->targets = g_list_prepend(p->targets, t);
260                 ++n;
261             }
262         }
263     }
264
265     p->n_targets = n;
266     p->maxtextw = maxwidth;
267 }
268
269 static gchar *popup_get_name(ObClient *c)
270 {
271     ObClient *p;
272     gchar *title;
273     const gchar *desk = NULL;
274     gchar *ret;
275
276     /* find our highest direct parent */
277     p = client_search_top_direct_parent(c);
278
279     if (c->desktop != DESKTOP_ALL && c->desktop != screen_desktop)
280         desk = screen_desktop_names[c->desktop];
281
282     title = c->iconic ? c->icon_title : c->title;
283
284     /* use the transient's parent's title/icon if we don't have one */
285     if (p != c && title[0] == '\0')
286         title = p->iconic ? p->icon_title : p->title;
287
288     if (desk)
289         ret = g_strdup_printf("%s [%s]", title, desk);
290     else
291         ret = g_strdup(title);
292
293     return ret;
294 }
295
296 static void popup_render(ObFocusCyclePopup *p, const ObClient *c,
297                          ObFocusCyclePopupMode mode)
298 {
299     gint ml, mt, mr, mb;
300     gint l, t, r, b;
301     gint x, y, w, h;
302     Rect *screen_area = NULL;
303     gint rgbax, rgbay, rgbaw, rgbah;
304     gint i;
305     GList *it;
306     const ObFocusCyclePopupTarget *newtarget;
307     gint icons_per_row;
308     gint icon_rows;
309     gint textw, texth;
310
311     /* vars for icon mode */
312     gint icon_mode_textx;
313     gint icon_mode_texty;
314     gint icons_center_x;
315
316     /* vars for list mode */
317     gint list_mode_icon_column_w = HILITE_SIZE + OUTSIDE_BORDER;
318
319     g_assert(mode == OB_FOCUS_CYCLE_POPUP_MODE_ICONS ||
320              mode == OB_FOCUS_CYCLE_POPUP_MODE_LIST);
321
322     screen_area = screen_physical_area_active();
323
324     /* get the outside margins */
325     RrMargins(p->a_bg, &ml, &mt, &mr, &mb);
326
327     /* get our outside borders */
328     l = ml + OUTSIDE_BORDER;
329     r = mr + OUTSIDE_BORDER;
330     t = mt + OUTSIDE_BORDER;
331     b = mb + OUTSIDE_BORDER;
332
333     /* get the width from the text and keep it within limits */
334     w = l + r + p->maxtextw;
335     if (mode == OB_FOCUS_CYCLE_POPUP_MODE_LIST)
336         /* when in list mode, there are icons down the side */
337         w += list_mode_icon_column_w;
338     w = MIN(w, MAX(screen_area->width/3, POPUP_WIDTH)); /* max width */
339     w = MAX(w, POPUP_WIDTH); /* min width */
340
341     if (mode == OB_FOCUS_CYCLE_POPUP_MODE_ICONS) {
342         /* how many icons will fit in that row? make the width fit that */
343         w -= l + r;
344         icons_per_row = (w + HILITE_SIZE - 1) / HILITE_SIZE;
345         w = icons_per_row * HILITE_SIZE + l + r;
346
347         /* how many rows do we need? */
348         icon_rows = (p->n_targets-1) / icons_per_row + 1;
349
350     }
351     else {
352         /* in list mode, there is one column of icons.. */
353         icons_per_row = 1;
354         icon_rows = p->n_targets;
355     }
356
357     /* get the text dimensions */
358     textw = w - l - r;
359     if (mode == OB_FOCUS_CYCLE_POPUP_MODE_LIST)
360         /* leave space on the side for the icons */
361         textw -= list_mode_icon_column_w;
362     texth = RrMinHeight(p->a_text) + TEXT_BORDER * 2;
363
364     /* find the height of the dialog */
365 #warning limit the height and scroll entries somehow
366     h = t + b + (icon_rows * MAX(HILITE_SIZE, texth));
367     if (mode == OB_FOCUS_CYCLE_POPUP_MODE_ICONS)
368         /* in icon mode the text sits below the icons, so make some space */
369         h += OUTSIDE_BORDER + texth;
370
371     /* center the icons if there is less than one row */
372     if (icon_rows == 1)
373         icons_center_x = (w - p->n_targets * HILITE_SIZE) / 2;
374     else
375         icons_center_x = 0;
376
377     if (mode == OB_FOCUS_CYCLE_POPUP_MODE_ICONS) {
378         /* get the position of the text */
379         icon_mode_textx = l;
380         icon_mode_texty = h - texth - b;
381     }
382
383     /* find the position for the popup (include the outer borders) */
384     x = screen_area->x + (screen_area->width -
385                           (w + ob_rr_theme->obwidth * 2)) / 2;
386     y = screen_area->y + (screen_area->height -
387                           (h + ob_rr_theme->obwidth * 2)) / 2;
388
389     /* get the dimensions of the target hilite texture */
390     rgbax = ml;
391     rgbay = mt;
392     rgbaw = w - ml - mr;
393     rgbah = h - mt - mb;
394
395     if (!p->mapped) {
396         /* position the background but don't draw it */
397         XMoveResizeWindow(obt_display, p->bg, x, y, w, h);
398
399         if (mode == OB_FOCUS_CYCLE_POPUP_MODE_ICONS) {
400             /* position the text */
401             XMoveResizeWindow(obt_display, p->icon_mode_text,
402                               icon_mode_textx, icon_mode_texty, textw, texth);
403             XMapWindow(obt_display, popup.icon_mode_text);
404         }
405         else
406             XUnmapWindow(obt_display, popup.icon_mode_text);
407     }
408
409     /* find the focused target */
410     newtarget = NULL;
411     for (i = 0, it = p->targets; it; ++i, it = g_list_next(it)) {
412         const ObFocusCyclePopupTarget *target = it->data;
413         if (target->client == c) {
414             /* save the target */
415             newtarget = target;
416             break;
417         }
418     }
419
420     g_assert(newtarget != NULL);
421
422     /* * * draw everything * * */
423
424     /* draw the background */
425     if (!p->mapped)
426         RrPaint(p->a_bg, p->bg, w, h);
427
428     /* draw the icons and text */
429     for (i = 0, it = p->targets; it; ++i, it = g_list_next(it)) {
430         const ObFocusCyclePopupTarget *target = it->data;
431
432         /* have to redraw the targetted icon and last targetted icon
433          * to update the hilite */
434         if (!p->mapped || newtarget == target || p->last_target == target) {
435             const gint row = i / icons_per_row; /* starting from 0 */
436             const gint col = i % icons_per_row; /* starting from 0 */
437             const ObClientIcon *icon;
438             gint iconx, icony;
439             gint list_mode_textx, list_mode_texty;
440             RrAppearance *text;
441
442             /* find the coordinates for the icon */
443             iconx = icons_center_x + l + (col * HILITE_SIZE);
444             icony = t + (row * MAX(texth, HILITE_SIZE))
445                 + MAX(texth - HILITE_SIZE, 0) / 2;
446
447             /* find the dimensions of the text box */
448             list_mode_textx = iconx + HILITE_SIZE + TEXT_BORDER;
449             list_mode_texty = icony + HILITE_OFFSET;
450
451             /* position the icon */
452             XMoveResizeWindow(obt_display, target->iconwin,
453                               iconx, icony, HILITE_SIZE, HILITE_SIZE);
454
455             /* position the text */
456             if (mode == OB_FOCUS_CYCLE_POPUP_MODE_LIST) {
457                 XMoveResizeWindow(obt_display, target->textwin,
458                                   list_mode_textx, list_mode_texty,
459                                   textw, texth);
460                 XMapWindow(obt_display, target->textwin);
461             }
462             else
463                 XUnmapWindow(obt_display, target->textwin);
464
465             /* get the icon from the client */
466             icon = client_icon(target->client, ICON_SIZE, ICON_SIZE);
467             p->a_icon->texture[0].data.rgba.width = icon->width;
468             p->a_icon->texture[0].data.rgba.height = icon->height;
469             p->a_icon->texture[0].data.rgba.twidth = ICON_SIZE;
470             p->a_icon->texture[0].data.rgba.theight = ICON_SIZE;
471             p->a_icon->texture[0].data.rgba.tx = HILITE_OFFSET;
472             p->a_icon->texture[0].data.rgba.ty = HILITE_OFFSET;
473             p->a_icon->texture[0].data.rgba.alpha =
474                 target->client->iconic ? OB_ICONIC_ALPHA : 0xff;
475             p->a_icon->texture[0].data.rgba.data = icon->data;
476
477             /* Draw the hilite? */
478             p->a_icon->texture[1].type = (target == newtarget) ?
479                                          RR_TEXTURE_RGBA : RR_TEXTURE_NONE;
480
481             /* draw the icon */
482             p->a_icon->surface.parentx = iconx;
483             p->a_icon->surface.parenty = icony;
484             RrPaint(p->a_icon, target->iconwin, HILITE_SIZE, HILITE_SIZE);
485
486             /* draw the text */
487             if (mode == OB_FOCUS_CYCLE_POPUP_MODE_LIST || target == newtarget)
488             {
489                 text = (target == newtarget) ? p->a_hilite_text : p->a_text;
490                 text->texture[0].data.text.string = target->text;
491                 text->surface.parentx =
492                     mode == OB_FOCUS_CYCLE_POPUP_MODE_ICONS ?
493                     icon_mode_textx : list_mode_textx;
494                 text->surface.parenty =
495                     mode == OB_FOCUS_CYCLE_POPUP_MODE_ICONS ?
496                     icon_mode_texty : list_mode_texty;
497                 RrPaint(text,
498                         (mode == OB_FOCUS_CYCLE_POPUP_MODE_ICONS ?
499                          p->icon_mode_text : target->textwin),
500                         textw, texth);
501             }
502         }
503     }
504
505     p->last_target = newtarget;
506
507     g_free(screen_area);
508 }
509
510 void focus_cycle_popup_show(ObClient *c, gboolean iconic_windows,
511                             gboolean all_desktops, gboolean dock_windows,
512                             gboolean desktop_windows,
513                             ObFocusCyclePopupMode mode)
514 {
515     g_assert(c != NULL);
516
517     if (mode == OB_FOCUS_CYCLE_POPUP_MODE_NONE) {
518         focus_cycle_popup_hide();
519         return;
520     }
521
522     /* do this stuff only when the dialog is first showing */
523     if (!popup.mapped)
524         popup_setup(&popup, TRUE, iconic_windows, all_desktops,
525                     dock_windows, desktop_windows);
526     g_assert(popup.targets != NULL);
527
528     popup_render(&popup, c, mode);
529
530     if (!popup.mapped) {
531         /* show the dialog */
532         XMapWindow(obt_display, popup.bg);
533         XFlush(obt_display);
534         popup.mapped = TRUE;
535         screen_hide_desktop_popup();
536     }
537 }
538
539 void focus_cycle_popup_hide(void)
540 {
541     gulong ignore_start;
542
543     ignore_start = event_start_ignore_all_enters();
544
545     XUnmapWindow(obt_display, popup.bg);
546     XFlush(obt_display);
547
548     event_end_ignore_all_enters(ignore_start);
549
550     popup.mapped = FALSE;
551
552     while(popup.targets) {
553         ObFocusCyclePopupTarget *t = popup.targets->data;
554
555         g_free(t->text);
556         XDestroyWindow(obt_display, t->iconwin);
557         XDestroyWindow(obt_display, t->textwin);
558         g_free(t);
559
560         popup.targets = g_list_delete_link(popup.targets, popup.targets);
561     }
562     popup.n_targets = 0;
563     popup.last_target = NULL;
564 }
565
566 void focus_cycle_popup_single_show(struct _ObClient *c,
567                                    gboolean iconic_windows,
568                                    gboolean all_desktops,
569                                    gboolean dock_windows,
570                                    gboolean desktop_windows)
571 {
572     gchar *text;
573
574     g_assert(c != NULL);
575
576     /* do this stuff only when the dialog is first showing */
577     if (!popup.mapped) {
578         Rect *a;
579
580         popup_setup(&popup, FALSE, iconic_windows, all_desktops,
581                     dock_windows, desktop_windows);
582         g_assert(popup.targets == NULL);
583
584         /* position the popup */
585         a = screen_physical_area_active();
586         icon_popup_position(single_popup, CenterGravity,
587                             a->x + a->width / 2, a->y + a->height / 2);
588         icon_popup_height(single_popup, POPUP_HEIGHT);
589         icon_popup_min_width(single_popup, POPUP_WIDTH);
590         icon_popup_max_width(single_popup, MAX(a->width/3, POPUP_WIDTH));
591         icon_popup_text_width(single_popup, popup.maxtextw);
592         g_free(a);
593     }
594
595     text = popup_get_name(c);
596     icon_popup_show(single_popup, text, client_icon(c, HILITE_SIZE,
597                                                     HILITE_SIZE));
598     g_free(text);
599     screen_hide_desktop_popup();
600 }
601
602 void focus_cycle_popup_single_hide(void)
603 {
604     icon_popup_hide(single_popup);
605 }