dont assert, just ignore client_unfocus() when the client isnt already focused
[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) 2003        Ben Jansens
5    Copyright (c) 2003        Derek Foreman
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 <X11/Xlib.h>
21 #include <X11/Xutil.h>
22
23 #include "render.h"
24 #include "gradient.h"
25 #include "font.h"
26 #include "mask.h"
27 #include "color.h"
28 #include "image.h"
29 #include "theme.h"
30
31 #include <glib.h>
32
33 #ifdef HAVE_STDLIB_H
34 #  include <stdlib.h>
35 #endif
36
37 static void pixel_data_to_pixmap(RrAppearance *l,
38                                  gint x, gint y, gint w, gint h);
39
40 void RrPaint(RrAppearance *a, Window win, gint w, gint h)
41 {
42     int i, transferred = 0, sw;
43     RrPixel32 *source, *dest;
44     Pixmap oldp;
45     RrRect tarea; /* area in which to draw textures */
46     gboolean resized;
47
48     if (w <= 0 || h <= 0) return;
49
50     resized = (a->w != w || a->h != h);
51
52     oldp = a->pixmap; /* save to free after changing the visible pixmap */
53     a->pixmap = XCreatePixmap(RrDisplay(a->inst),
54                               RrRootWindow(a->inst),
55                               w, h, RrDepth(a->inst));
56
57     g_assert(a->pixmap != None);
58     a->w = w;
59     a->h = h;
60
61     if (a->xftdraw != NULL)
62         XftDrawDestroy(a->xftdraw);
63     a->xftdraw = XftDrawCreate(RrDisplay(a->inst), a->pixmap,
64                                RrVisual(a->inst), RrColormap(a->inst));
65     g_assert(a->xftdraw != NULL);
66
67     g_free(a->surface.pixel_data);
68     a->surface.pixel_data = g_new(RrPixel32, w * h);
69
70     if (a->surface.grad == RR_SURFACE_PARENTREL) {
71         g_assert (a->surface.parent);
72         g_assert (a->surface.parent->w);
73
74         sw = a->surface.parent->w;
75         source = (a->surface.parent->surface.pixel_data +
76                   a->surface.parentx + sw * a->surface.parenty);
77         dest = a->surface.pixel_data;
78         for (i = 0; i < h; i++, source += sw, dest += w) {
79             memcpy(dest, source, w * sizeof(RrPixel32));
80         }
81     } else
82         RrRender(a, w, h);
83
84     {
85         gint l, t, r, b;
86         RrMargins(a, &l, &t, &r, &b);
87         RECT_SET(tarea, l, t, w - l - r, h - t - b); 
88     }       
89
90     for (i = 0; i < a->textures; i++) {
91         switch (a->texture[i].type) {
92         case RR_TEXTURE_NONE:
93             break;
94         case RR_TEXTURE_TEXT:
95             if (!transferred) {
96                 transferred = 1;
97                 if (a->surface.grad != RR_SURFACE_SOLID)
98                     pixel_data_to_pixmap(a, 0, 0, w, h);
99             }
100             if (a->xftdraw == NULL) {
101                 a->xftdraw = XftDrawCreate(RrDisplay(a->inst), a->pixmap, 
102                                            RrVisual(a->inst),
103                                            RrColormap(a->inst));
104             }
105             RrFontDraw(a->xftdraw, &a->texture[i].data.text, &tarea);
106             break;
107         case RR_TEXTURE_LINE_ART:
108             if (!transferred) {
109                 transferred = 1;
110                 if (a->surface.grad != RR_SURFACE_SOLID)
111                     pixel_data_to_pixmap(a, 0, 0, w, h);
112             }
113             XDrawLine(RrDisplay(a->inst), a->pixmap,
114                       RrColorGC(a->texture[i].data.lineart.color),
115                       a->texture[i].data.lineart.x1,
116                       a->texture[i].data.lineart.y1,
117                       a->texture[i].data.lineart.x2,
118                       a->texture[i].data.lineart.y2);
119             break;
120         case RR_TEXTURE_MASK:
121             if (!transferred) {
122                 transferred = 1;
123                 if (a->surface.grad != RR_SURFACE_SOLID)
124                     pixel_data_to_pixmap(a, 0, 0, w, h);
125             }
126             RrPixmapMaskDraw(a->pixmap, &a->texture[i].data.mask, &tarea);
127             break;
128         case RR_TEXTURE_RGBA:
129             g_assert(!transferred);
130             RrImageDraw(a->surface.pixel_data,
131                         &a->texture[i].data.rgba,
132                         a->w, a->h,
133                         &tarea);
134         break;
135         }
136     }
137
138     if (!transferred) {
139         transferred = 1;
140         if (a->surface.grad != RR_SURFACE_SOLID)
141             pixel_data_to_pixmap(a, 0, 0, w, h);
142     }
143
144     XSetWindowBackgroundPixmap(RrDisplay(a->inst), win, a->pixmap);
145     XClearWindow(RrDisplay(a->inst), win);
146     if (oldp) XFreePixmap(RrDisplay(a->inst), oldp);
147 }
148
149 RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
150 {
151   RrAppearance *out;
152
153   out = g_new0(RrAppearance, 1);
154   out->inst = inst;
155   out->textures = numtex;
156   if (numtex) out->texture = g_new0(RrTexture, numtex);
157
158   return out;
159 }
160
161 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
162 {
163     RrSurface *spo, *spc;
164     RrAppearance *copy = g_new(RrAppearance, 1);
165     gint i;
166
167     copy->inst = orig->inst;
168
169     spo = &(orig->surface);
170     spc = &(copy->surface);
171     spc->grad = spo->grad;
172     spc->relief = spo->relief;
173     spc->bevel = spo->bevel;
174     if (spo->primary != NULL)
175         spc->primary = RrColorNew(copy->inst,
176                                   spo->primary->r,
177                                   spo->primary->g, 
178                                   spo->primary->b);
179     else spc->primary = NULL;
180
181     if (spo->secondary != NULL)
182         spc->secondary = RrColorNew(copy->inst,
183                                     spo->secondary->r,
184                                     spo->secondary->g,
185                                     spo->secondary->b);
186     else spc->secondary = NULL;
187
188     if (spo->border_color != NULL)
189         spc->border_color = RrColorNew(copy->inst,
190                                        spo->border_color->r,
191                                        spo->border_color->g,
192                                        spo->border_color->b);
193     else spc->border_color = NULL;
194
195     if (spo->interlace_color != NULL)
196         spc->interlace_color = RrColorNew(copy->inst,
197                                        spo->interlace_color->r,
198                                        spo->interlace_color->g,
199                                        spo->interlace_color->b);
200     else spc->interlace_color = NULL;
201
202     if (spo->bevel_dark != NULL)
203         spc->bevel_dark = RrColorNew(copy->inst,
204                                      spo->bevel_dark->r,
205                                      spo->bevel_dark->g,
206                                      spo->bevel_dark->b);
207     else spc->bevel_dark = NULL;
208
209     if (spo->bevel_light != NULL)
210         spc->bevel_light = RrColorNew(copy->inst,
211                                       spo->bevel_light->r,
212                                       spo->bevel_light->g,
213                                       spo->bevel_light->b);
214     else spc->bevel_light = NULL;
215
216     spc->interlaced = spo->interlaced;
217     spc->border = spo->border;
218     spc->parent = NULL;
219     spc->parentx = spc->parenty = 0;
220     spc->pixel_data = NULL;
221
222     copy->textures = orig->textures;
223     copy->texture = g_memdup(orig->texture,
224                              orig->textures * sizeof(RrTexture));
225     for (i = 0; i < copy->textures; ++i)
226         if (copy->texture[i].type == RR_TEXTURE_RGBA) {
227             copy->texture[i].data.rgba.cache = NULL;
228         }
229     copy->pixmap = None;
230     copy->xftdraw = NULL;
231     copy->w = copy->h = 0;
232     return copy;
233 }
234
235 void RrAppearanceFree(RrAppearance *a)
236 {
237     gint i;
238
239     if (a) {
240         RrSurface *p;
241         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
242         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
243         for (i = 0; i < a->textures; ++i)
244             if (a->texture[i].type == RR_TEXTURE_RGBA) {
245                 g_free(a->texture[i].data.rgba.cache);
246                 a->texture[i].data.rgba.cache = NULL;
247             }
248         if (a->textures)
249             g_free(a->texture);
250         p = &a->surface;
251         RrColorFree(p->primary);
252         RrColorFree(p->secondary);
253         RrColorFree(p->border_color);
254         RrColorFree(p->interlace_color);
255         RrColorFree(p->bevel_dark);
256         RrColorFree(p->bevel_light);
257         g_free(p->pixel_data);
258
259         g_free(a);
260     }
261 }
262
263
264 static void pixel_data_to_pixmap(RrAppearance *l,
265                                  gint x, gint y, gint w, gint h)
266 {
267     RrPixel32 *in, *scratch;
268     Pixmap out;
269     XImage *im = NULL;
270     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
271                       ZPixmap, 0, NULL, w, h, 32, 0);
272     g_assert(im != NULL);
273
274     in = l->surface.pixel_data;
275     out = l->pixmap;
276
277 /* this malloc is a complete waste of time on normal 32bpp
278    as reduce_depth just sets im->data = data and returns
279 */
280     scratch = g_new(RrPixel32, im->width * im->height);
281     im->data = (char*) scratch;
282     RrReduceDepth(l->inst, in, im);
283     XPutImage(RrDisplay(l->inst), out,
284               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
285               im, 0, 0, x, y, w, h);
286     im->data = NULL;
287     XDestroyImage(im);
288     g_free(scratch);
289 }
290
291 void RrMargins (RrAppearance *a, gint *l, gint *t, gint *r, gint *b)
292 {
293     *l = *t = *r = *b = 0;
294
295     if (a->surface.grad != RR_SURFACE_PARENTREL) {
296         if (a->surface.relief != RR_RELIEF_FLAT) {
297             switch (a->surface.bevel) {
298             case RR_BEVEL_1:
299                 *l = *t = *r = *b = 1;
300                 break;
301             case RR_BEVEL_2:
302                 *l = *t = *r = *b = 2;
303                 break;
304             }
305         } else if (a->surface.border) {
306             *l = *t = *r = *b = 1;
307         }
308     }
309 }
310
311 void RrMinsize(RrAppearance *a, gint *w, gint *h)
312 {
313     gint i;
314     gint m;
315     gint l, t, r, b;
316     *w = *h = 0;
317
318     for (i = 0; i < a->textures; ++i) {
319         switch (a->texture[i].type) {
320         case RR_TEXTURE_NONE:
321             break;
322         case RR_TEXTURE_MASK:
323             *w = MAX(*w, a->texture[i].data.mask.mask->width);
324             *h = MAX(*h, a->texture[i].data.mask.mask->height);
325             break;
326         case RR_TEXTURE_TEXT:
327             m = RrFontMeasureString(a->texture[i].data.text.font,
328                                     a->texture[i].data.text.string);
329             *w = MAX(*w, m);
330             m = RrFontHeight(a->texture[i].data.text.font);
331             *h += MAX(*h, m);
332             break;
333         case RR_TEXTURE_RGBA:
334             *w += MAX(*w, a->texture[i].data.rgba.width);
335             *h += MAX(*h, a->texture[i].data.rgba.height);
336             break;
337         case RR_TEXTURE_LINE_ART:
338             *w += MAX(*w, MAX(a->texture[i].data.lineart.x1,
339                               a->texture[i].data.lineart.x2));
340             *h += MAX(*h, MAX(a->texture[i].data.lineart.y1,
341                               a->texture[i].data.lineart.y2));
342             break;
343         }
344     }
345
346     RrMargins(a, &l, &t, &r, &b);
347
348     *w += l + r;
349     *h += t + b;
350
351     if (*w < 1) *w = 1;
352     if (*h < 1) *h = 1;
353 }
354
355 gboolean RrPixmapToRGBA(const RrInstance *inst,
356                         Pixmap pmap, Pixmap mask,
357                         gint *w, gint *h, RrPixel32 **data)
358 {
359     Window xr;
360     gint xx, xy;
361     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
362     XImage *xi, *xm = NULL;
363
364     if (!XGetGeometry(RrDisplay(inst),
365                       pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
366         return FALSE;
367     if (mask) {
368         if (!XGetGeometry(RrDisplay(inst), mask,
369                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
370             return FALSE;
371         if (pw != mw || ph != mh || xd != 1)
372             return FALSE;
373     }
374
375     xi = XGetImage(RrDisplay(inst), pmap,
376                    0, 0, pw, ph, 0xffffffff, ZPixmap);
377     if (!xi)
378         return FALSE;
379
380     if (mask) {
381         xm = XGetImage(RrDisplay(inst), mask,
382                        0, 0, mw, mh, 0xffffffff, ZPixmap);
383         if (!xm) {
384             XDestroyImage(xi);
385             return FALSE;
386         }
387     }
388
389     *data = g_new(RrPixel32, pw * ph);
390     RrIncreaseDepth(inst, *data, xi);
391
392     if (mask) {
393         /* apply transparency from the mask */
394         di = 0;
395         for (i = 0, y = 0; y < ph; ++y) {
396             for (x = 0; x < pw; ++x, ++i) {
397                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
398                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
399             }
400             di += xm->bytes_per_line;
401         }
402     }
403
404     *w = pw;
405     *h = ph;
406
407     XDestroyImage(xi);
408     if (mask)
409         XDestroyImage(xm);
410
411     return TRUE;
412 }