fix a memleak in client_update_icon_geometry
[dana/openbox.git] / render / render.c
1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
2
3    render.c for the Openbox window manager
4    Copyright (c) 2006        Mikael Magnusson
5    Copyright (c) 2003-2007   Dana Jansens
6    Copyright (c) 2003        Derek Foreman
7
8    This program is free software; you can redistribute it and/or modify
9    it under the terms of the GNU General Public License as published by
10    the Free Software Foundation; either version 2 of the License, or
11    (at your option) any later version.
12
13    This program is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16    GNU General Public License for more details.
17
18    See the COPYING file for a copy of the GNU General Public License.
19 */
20
21 #include "render.h"
22 #include "gradient.h"
23 #include "font.h"
24 #include "mask.h"
25 #include "color.h"
26 #include "image.h"
27 #include "theme.h"
28
29 #include <glib.h>
30 #include <X11/Xlib.h>
31 #include <X11/Xutil.h>
32 #include <X11/Xft/Xft.h>
33
34 #ifdef HAVE_STDLIB_H
35 #  include <stdlib.h>
36 #endif
37
38 static void pixel_data_to_pixmap(RrAppearance *l,
39                                  gint x, gint y, gint w, gint h);
40
41 Pixmap RrPaintPixmap(RrAppearance *a, gint w, gint h)
42 {
43     gint i, transferred = 0, force_transfer = 0;
44     Pixmap oldp = None;
45     RrRect tarea; /* area in which to draw textures */
46     gboolean resized;
47
48     if (w <= 0 || h <= 0) return None;
49
50     if (a->surface.parentx < 0 || a->surface.parenty < 0) {
51         /* ob_debug("Invalid parent co-ordinates\n"); */
52         return None;
53     }
54
55     if (a->surface.grad == RR_SURFACE_PARENTREL &&
56         (a->surface.parentx >= a->surface.parent->w ||
57          a->surface.parenty >= a->surface.parent->h))
58     {
59         return None;
60     }
61
62     resized = (a->w != w || a->h != h);
63
64     oldp = a->pixmap; /* save to free after changing the visible pixmap */
65     a->pixmap = XCreatePixmap(RrDisplay(a->inst),
66                               RrRootWindow(a->inst),
67                               w, h, RrDepth(a->inst));
68
69     g_assert(a->pixmap != None);
70     a->w = w;
71     a->h = h;
72
73     if (a->xftdraw != NULL)
74         XftDrawDestroy(a->xftdraw);
75     a->xftdraw = XftDrawCreate(RrDisplay(a->inst), a->pixmap,
76                                RrVisual(a->inst), RrColormap(a->inst));
77     g_assert(a->xftdraw != NULL);
78
79     if (resized) {
80         g_free(a->surface.pixel_data);
81         a->surface.pixel_data = g_new(RrPixel32, w * h);
82     }
83
84     RrRender(a, w, h);
85
86     {
87         gint l, t, r, b;
88         RrMargins(a, &l, &t, &r, &b);
89         RECT_SET(tarea, l, t, w - l - r, h - t - b);
90     }
91
92     for (i = 0; i < a->textures; i++) {
93         switch (a->texture[i].type) {
94         case RR_TEXTURE_NONE:
95             break;
96         case RR_TEXTURE_TEXT:
97             if (!transferred) {
98                 transferred = 1;
99                 if ((a->surface.grad != RR_SURFACE_SOLID)
100                     || (a->surface.interlaced))
101                     pixel_data_to_pixmap(a, 0, 0, w, h);
102             }
103             if (a->xftdraw == NULL) {
104                 a->xftdraw = XftDrawCreate(RrDisplay(a->inst), a->pixmap,
105                                            RrVisual(a->inst),
106                                            RrColormap(a->inst));
107             }
108             RrFontDraw(a->xftdraw, &a->texture[i].data.text, &tarea);
109             break;
110         case RR_TEXTURE_LINE_ART:
111             if (!transferred) {
112                 transferred = 1;
113                 if ((a->surface.grad != RR_SURFACE_SOLID)
114                     || (a->surface.interlaced))
115                     pixel_data_to_pixmap(a, 0, 0, w, h);
116             }
117             XDrawLine(RrDisplay(a->inst), a->pixmap,
118                       RrColorGC(a->texture[i].data.lineart.color),
119                       a->texture[i].data.lineart.x1,
120                       a->texture[i].data.lineart.y1,
121                       a->texture[i].data.lineart.x2,
122                       a->texture[i].data.lineart.y2);
123             break;
124         case RR_TEXTURE_MASK:
125             if (!transferred) {
126                 transferred = 1;
127                 if ((a->surface.grad != RR_SURFACE_SOLID)
128                     || (a->surface.interlaced))
129                     pixel_data_to_pixmap(a, 0, 0, w, h);
130             }
131             RrPixmapMaskDraw(a->pixmap, &a->texture[i].data.mask, &tarea);
132             break;
133         case RR_TEXTURE_RGBA:
134             g_assert(!transferred);
135             RrImageDraw(a->surface.pixel_data,
136                         &a->texture[i].data.rgba,
137                         a->w, a->h,
138                         &tarea);
139             force_transfer = 1;
140         break;
141         }
142     }
143
144     if (!transferred) {
145         transferred = 1;
146         if ((a->surface.grad != RR_SURFACE_SOLID) || (a->surface.interlaced) ||
147             force_transfer)
148         {
149             pixel_data_to_pixmap(a, 0, 0, w, h);
150         }
151     }
152
153     return oldp;
154 }
155
156 void RrPaint(RrAppearance *a, Window win, gint w, gint h)
157 {
158     Pixmap oldp;
159
160     oldp = RrPaintPixmap(a, w, h);
161     XSetWindowBackgroundPixmap(RrDisplay(a->inst), win, a->pixmap);
162     XClearWindow(RrDisplay(a->inst), win);
163     /* free this after changing the visible pixmap */
164     if (oldp) XFreePixmap(RrDisplay(a->inst), oldp);
165 }
166
167 RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
168 {
169   RrAppearance *out;
170
171   out = g_new0(RrAppearance, 1);
172   out->inst = inst;
173   out->textures = numtex;
174   out->surface.bevel_light_adjust = 128;
175   out->surface.bevel_dark_adjust = 64;
176   if (numtex) out->texture = g_new0(RrTexture, numtex);
177
178   return out;
179 }
180
181 void RrAppearanceAddTextures(RrAppearance *a, gint numtex)
182 {
183     g_assert(a->textures == 0);
184
185     a->textures = numtex;
186     if (numtex) a->texture = g_new0(RrTexture, numtex);
187 }
188
189 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
190 {
191     RrSurface *spo, *spc;
192     RrAppearance *copy = g_new(RrAppearance, 1);
193     gint i;
194
195     copy->inst = orig->inst;
196
197     spo = &(orig->surface);
198     spc = &(copy->surface);
199     spc->grad = spo->grad;
200     spc->relief = spo->relief;
201     spc->bevel = spo->bevel;
202     if (spo->primary != NULL)
203         spc->primary = RrColorNew(copy->inst,
204                                   spo->primary->r,
205                                   spo->primary->g,
206                                   spo->primary->b);
207     else spc->primary = NULL;
208
209     if (spo->secondary != NULL)
210         spc->secondary = RrColorNew(copy->inst,
211                                     spo->secondary->r,
212                                     spo->secondary->g,
213                                     spo->secondary->b);
214     else spc->secondary = NULL;
215
216     if (spo->border_color != NULL)
217         spc->border_color = RrColorNew(copy->inst,
218                                        spo->border_color->r,
219                                        spo->border_color->g,
220                                        spo->border_color->b);
221     else spc->border_color = NULL;
222
223     if (spo->interlace_color != NULL)
224         spc->interlace_color = RrColorNew(copy->inst,
225                                        spo->interlace_color->r,
226                                        spo->interlace_color->g,
227                                        spo->interlace_color->b);
228     else spc->interlace_color = NULL;
229
230     if (spo->bevel_dark != NULL)
231         spc->bevel_dark = RrColorNew(copy->inst,
232                                      spo->bevel_dark->r,
233                                      spo->bevel_dark->g,
234                                      spo->bevel_dark->b);
235     else spc->bevel_dark = NULL;
236
237     if (spo->bevel_light != NULL)
238         spc->bevel_light = RrColorNew(copy->inst,
239                                       spo->bevel_light->r,
240                                       spo->bevel_light->g,
241                                       spo->bevel_light->b);
242     else spc->bevel_light = NULL;
243
244     if (spo->split_primary != NULL)
245         spc->split_primary = RrColorNew(copy->inst,
246                                         spo->split_primary->r,
247                                         spo->split_primary->g,
248                                         spo->split_primary->b);
249     else spc->split_primary = NULL;
250
251     if (spo->split_secondary != NULL)
252         spc->split_secondary = RrColorNew(copy->inst,
253                                         spo->split_secondary->r,
254                                         spo->split_secondary->g,
255                                         spo->split_secondary->b);
256     else spc->split_secondary = NULL;
257
258     spc->interlaced = spo->interlaced;
259     spc->bevel_light_adjust = spo->bevel_light_adjust;
260     spc->bevel_dark_adjust = spo->bevel_dark_adjust;
261     spc->border = spo->border;
262     spc->parent = NULL;
263     spc->parentx = spc->parenty = 0;
264     spc->pixel_data = NULL;
265
266     copy->textures = orig->textures;
267     copy->texture = g_memdup(orig->texture,
268                              orig->textures * sizeof(RrTexture));
269     for (i = 0; i < copy->textures; ++i)
270         if (copy->texture[i].type == RR_TEXTURE_RGBA) {
271             copy->texture[i].data.rgba.cache = NULL;
272         }
273     copy->pixmap = None;
274     copy->xftdraw = NULL;
275     copy->w = copy->h = 0;
276     return copy;
277 }
278
279 void RrAppearanceFree(RrAppearance *a)
280 {
281     gint i;
282
283     if (a) {
284         RrSurface *p;
285         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
286         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
287         for (i = 0; i < a->textures; ++i)
288             if (a->texture[i].type == RR_TEXTURE_RGBA) {
289                 g_free(a->texture[i].data.rgba.cache);
290                 a->texture[i].data.rgba.cache = NULL;
291             }
292         if (a->textures)
293             g_free(a->texture);
294         p = &a->surface;
295         RrColorFree(p->primary);
296         RrColorFree(p->secondary);
297         RrColorFree(p->border_color);
298         RrColorFree(p->interlace_color);
299         RrColorFree(p->bevel_dark);
300         RrColorFree(p->bevel_light);
301         RrColorFree(p->split_primary);
302         RrColorFree(p->split_secondary);
303         g_free(p->pixel_data);
304         p->pixel_data = NULL;
305         g_free(a);
306     }
307 }
308
309
310 static void pixel_data_to_pixmap(RrAppearance *l,
311                                  gint x, gint y, gint w, gint h)
312 {
313     RrPixel32 *in, *scratch;
314     Pixmap out;
315     XImage *im = NULL;
316     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
317                       ZPixmap, 0, NULL, w, h, 32, 0);
318     g_assert(im != NULL);
319
320     in = l->surface.pixel_data;
321     out = l->pixmap;
322
323 /* this malloc is a complete waste of time on normal 32bpp
324    as reduce_depth just sets im->data = data and returns
325 */
326     scratch = g_new(RrPixel32, im->width * im->height);
327     im->data = (gchar*) scratch;
328     RrReduceDepth(l->inst, in, im);
329     XPutImage(RrDisplay(l->inst), out,
330               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
331               im, 0, 0, x, y, w, h);
332     im->data = NULL;
333     XDestroyImage(im);
334     g_free(scratch);
335 }
336
337 void RrMargins (RrAppearance *a, gint *l, gint *t, gint *r, gint *b)
338 {
339     *l = *t = *r = *b = 0;
340
341     if (a->surface.grad != RR_SURFACE_PARENTREL) {
342         if (a->surface.relief != RR_RELIEF_FLAT) {
343             switch (a->surface.bevel) {
344             case RR_BEVEL_1:
345                 *l = *t = *r = *b = 1;
346                 break;
347             case RR_BEVEL_2:
348                 *l = *t = *r = *b = 2;
349                 break;
350             }
351         } else if (a->surface.border) {
352             *l = *t = *r = *b = 1;
353         }
354     }
355 }
356
357 void RrMinSize(RrAppearance *a, gint *w, gint *h)
358 {
359     *w = RrMinWidth(a);
360     *h = RrMinHeight(a);
361 }
362
363 gint RrMinWidth(RrAppearance *a)
364 {
365     gint i;
366     RrSize *m;
367     gint l, t, r, b;
368     gint w = 0;
369
370     for (i = 0; i < a->textures; ++i) {
371         switch (a->texture[i].type) {
372         case RR_TEXTURE_NONE:
373             break;
374         case RR_TEXTURE_MASK:
375             w = MAX(w, a->texture[i].data.mask.mask->width);
376             break;
377         case RR_TEXTURE_TEXT:
378             m = RrFontMeasureString(a->texture[i].data.text.font,
379                                     a->texture[i].data.text.string,
380                                     a->texture[i].data.text.shadow_offset_x,
381                                     a->texture[i].data.text.shadow_offset_y);
382             w = MAX(w, m->width);
383             g_free(m);
384             break;
385         case RR_TEXTURE_RGBA:
386             w += MAX(w, a->texture[i].data.rgba.width);
387             break;
388         case RR_TEXTURE_LINE_ART:
389             w += MAX(w, MAX(a->texture[i].data.lineart.x1,
390                             a->texture[i].data.lineart.x2));
391             break;
392         }
393     }
394
395     RrMargins(a, &l, &t, &r, &b);
396
397     w += l + r;
398
399     if (w < 1) w = 1;
400     return w;
401 }
402
403 gint RrMinHeight(RrAppearance *a)
404 {
405     gint i;
406     gint l, t, r, b;
407     gint h = 0;
408
409     for (i = 0; i < a->textures; ++i) {
410         switch (a->texture[i].type) {
411         case RR_TEXTURE_NONE:
412             break;
413         case RR_TEXTURE_MASK:
414             h = MAX(h, a->texture[i].data.mask.mask->height);
415             break;
416         case RR_TEXTURE_TEXT:
417             h += MAX(h, RrFontHeight(a->texture[i].data.text.font,
418                                      a->texture[i].data.text.shadow_offset_y));
419             break;
420         case RR_TEXTURE_RGBA:
421             h += MAX(h, a->texture[i].data.rgba.height);
422             break;
423         case RR_TEXTURE_LINE_ART:
424             h += MAX(h, MAX(a->texture[i].data.lineart.y1,
425                             a->texture[i].data.lineart.y2));
426             break;
427         }
428     }
429
430     RrMargins(a, &l, &t, &r, &b);
431
432     h += t + b;
433
434     if (h < 1) h = 1;
435     return h;
436 }
437
438 static void reverse_bits(gchar *c, gint n)
439 {
440     gint i;
441     for (i = 0; i < n; i++, c++)
442         *c = (((*c * 0x0802UL & 0x22110UL) |
443                (*c * 0x8020UL & 0x88440UL)) * 0x10101UL) >> 16;
444 }
445
446 gboolean RrPixmapToRGBA(const RrInstance *inst,
447                         Pixmap pmap, Pixmap mask,
448                         gint *w, gint *h, RrPixel32 **data)
449 {
450     Window xr;
451     gint xx, xy;
452     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
453     XImage *xi, *xm = NULL;
454
455     if (!XGetGeometry(RrDisplay(inst), pmap,
456                       &xr, &xx, &xy, &pw, &ph, &xb, &xd))
457         return FALSE;
458
459     if (mask) {
460         if (!XGetGeometry(RrDisplay(inst), mask,
461                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
462             return FALSE;
463         if (pw != mw || ph != mh || xd != 1)
464             return FALSE;
465     }
466
467     xi = XGetImage(RrDisplay(inst), pmap,
468                    0, 0, pw, ph, 0xffffffff, ZPixmap);
469     if (!xi)
470         return FALSE;
471
472     if (mask) {
473         xm = XGetImage(RrDisplay(inst), mask,
474                        0, 0, mw, mh, 0xffffffff, ZPixmap);
475         if (!xm) {
476             XDestroyImage(xi);
477             return FALSE;
478         }
479         if ((xm->bits_per_pixel == 1) && (xm->bitmap_bit_order != LSBFirst))
480             reverse_bits(xm->data, xm->bytes_per_line * xm->height);
481     }
482
483     if ((xi->bits_per_pixel == 1) && (xi->bitmap_bit_order != LSBFirst))
484         reverse_bits(xi->data, xi->bytes_per_line * xi->height);
485
486     *data = g_new(RrPixel32, pw * ph);
487     RrIncreaseDepth(inst, *data, xi);
488
489     if (mask) {
490         /* apply transparency from the mask */
491         di = 0;
492         for (i = 0, y = 0; y < ph; ++y) {
493             for (x = 0; x < pw; ++x, ++i) {
494                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
495                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
496             }
497             di += xm->bytes_per_line;
498         }
499     }
500
501     *w = pw;
502     *h = ph;
503
504     XDestroyImage(xi);
505     if (mask)
506         XDestroyImage(xm);
507
508     return TRUE;
509 }