you can create dialog windows called "prompts" which have a message and some buttons...
[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 RrAppearanceRemoveTextures(RrAppearance *a)
182 {
183     gint i;
184
185     g_free(a->texture);
186     a->textures = 0;
187 }
188
189 void RrAppearanceAddTextures(RrAppearance *a, gint numtex)
190 {
191     g_assert(a->textures == 0);
192
193     a->textures = numtex;
194     if (numtex) a->texture = g_new0(RrTexture, numtex);
195 }
196
197 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
198 {
199     RrSurface *spo, *spc;
200     RrAppearance *copy = g_new(RrAppearance, 1);
201     gint i;
202
203     copy->inst = orig->inst;
204
205     spo = &(orig->surface);
206     spc = &(copy->surface);
207     spc->grad = spo->grad;
208     spc->relief = spo->relief;
209     spc->bevel = spo->bevel;
210     if (spo->primary != NULL)
211         spc->primary = RrColorNew(copy->inst,
212                                   spo->primary->r,
213                                   spo->primary->g,
214                                   spo->primary->b);
215     else spc->primary = NULL;
216
217     if (spo->secondary != NULL)
218         spc->secondary = RrColorNew(copy->inst,
219                                     spo->secondary->r,
220                                     spo->secondary->g,
221                                     spo->secondary->b);
222     else spc->secondary = NULL;
223
224     if (spo->border_color != NULL)
225         spc->border_color = RrColorNew(copy->inst,
226                                        spo->border_color->r,
227                                        spo->border_color->g,
228                                        spo->border_color->b);
229     else spc->border_color = NULL;
230
231     if (spo->interlace_color != NULL)
232         spc->interlace_color = RrColorNew(copy->inst,
233                                        spo->interlace_color->r,
234                                        spo->interlace_color->g,
235                                        spo->interlace_color->b);
236     else spc->interlace_color = NULL;
237
238     if (spo->bevel_dark != NULL)
239         spc->bevel_dark = RrColorNew(copy->inst,
240                                      spo->bevel_dark->r,
241                                      spo->bevel_dark->g,
242                                      spo->bevel_dark->b);
243     else spc->bevel_dark = NULL;
244
245     if (spo->bevel_light != NULL)
246         spc->bevel_light = RrColorNew(copy->inst,
247                                       spo->bevel_light->r,
248                                       spo->bevel_light->g,
249                                       spo->bevel_light->b);
250     else spc->bevel_light = NULL;
251
252     if (spo->split_primary != NULL)
253         spc->split_primary = RrColorNew(copy->inst,
254                                         spo->split_primary->r,
255                                         spo->split_primary->g,
256                                         spo->split_primary->b);
257     else spc->split_primary = NULL;
258
259     if (spo->split_secondary != NULL)
260         spc->split_secondary = RrColorNew(copy->inst,
261                                         spo->split_secondary->r,
262                                         spo->split_secondary->g,
263                                         spo->split_secondary->b);
264     else spc->split_secondary = NULL;
265
266     spc->interlaced = spo->interlaced;
267     spc->bevel_light_adjust = spo->bevel_light_adjust;
268     spc->bevel_dark_adjust = spo->bevel_dark_adjust;
269     spc->border = spo->border;
270     spc->parent = NULL;
271     spc->parentx = spc->parenty = 0;
272     spc->pixel_data = NULL;
273
274     copy->textures = orig->textures;
275     copy->texture = g_memdup(orig->texture,
276                              orig->textures * sizeof(RrTexture));
277     for (i = 0; i < copy->textures; ++i)
278         if (copy->texture[i].type == RR_TEXTURE_RGBA) {
279             copy->texture[i].data.rgba.cache = NULL;
280         }
281     copy->pixmap = None;
282     copy->xftdraw = NULL;
283     copy->w = copy->h = 0;
284     return copy;
285 }
286
287 void RrAppearanceFree(RrAppearance *a)
288 {
289     gint i;
290
291     if (a) {
292         RrSurface *p;
293         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
294         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
295         for (i = 0; i < a->textures; ++i)
296             if (a->texture[i].type == RR_TEXTURE_RGBA) {
297                 g_free(a->texture[i].data.rgba.cache);
298                 a->texture[i].data.rgba.cache = NULL;
299             }
300         if (a->textures)
301             g_free(a->texture);
302         p = &a->surface;
303         RrColorFree(p->primary);
304         RrColorFree(p->secondary);
305         RrColorFree(p->border_color);
306         RrColorFree(p->interlace_color);
307         RrColorFree(p->bevel_dark);
308         RrColorFree(p->bevel_light);
309         RrColorFree(p->split_primary);
310         RrColorFree(p->split_secondary);
311         g_free(p->pixel_data);
312         p->pixel_data = NULL;
313         g_free(a);
314     }
315 }
316
317
318 static void pixel_data_to_pixmap(RrAppearance *l,
319                                  gint x, gint y, gint w, gint h)
320 {
321     RrPixel32 *in, *scratch;
322     Pixmap out;
323     XImage *im = NULL;
324     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
325                       ZPixmap, 0, NULL, w, h, 32, 0);
326     g_assert(im != NULL);
327
328     in = l->surface.pixel_data;
329     out = l->pixmap;
330
331 /* this malloc is a complete waste of time on normal 32bpp
332    as reduce_depth just sets im->data = data and returns
333 */
334     scratch = g_new(RrPixel32, im->width * im->height);
335     im->data = (gchar*) scratch;
336     RrReduceDepth(l->inst, in, im);
337     XPutImage(RrDisplay(l->inst), out,
338               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
339               im, 0, 0, x, y, w, h);
340     im->data = NULL;
341     XDestroyImage(im);
342     g_free(scratch);
343 }
344
345 void RrMargins (RrAppearance *a, gint *l, gint *t, gint *r, gint *b)
346 {
347     *l = *t = *r = *b = 0;
348
349     if (a->surface.grad != RR_SURFACE_PARENTREL) {
350         if (a->surface.relief != RR_RELIEF_FLAT) {
351             switch (a->surface.bevel) {
352             case RR_BEVEL_1:
353                 *l = *t = *r = *b = 1;
354                 break;
355             case RR_BEVEL_2:
356                 *l = *t = *r = *b = 2;
357                 break;
358             }
359         } else if (a->surface.border) {
360             *l = *t = *r = *b = 1;
361         }
362     }
363 }
364
365 void RrMinSize(RrAppearance *a, gint *w, gint *h)
366 {
367     *w = RrMinWidth(a);
368     *h = RrMinHeight(a);
369 }
370
371 gint RrMinWidth(RrAppearance *a)
372 {
373     gint i;
374     RrSize *m;
375     gint l, t, r, b;
376     gint w = 0;
377
378     for (i = 0; i < a->textures; ++i) {
379         switch (a->texture[i].type) {
380         case RR_TEXTURE_NONE:
381             break;
382         case RR_TEXTURE_MASK:
383             w = MAX(w, a->texture[i].data.mask.mask->width);
384             break;
385         case RR_TEXTURE_TEXT:
386             m = RrFontMeasureString(a->texture[i].data.text.font,
387                                     a->texture[i].data.text.string,
388                                     a->texture[i].data.text.shadow_offset_x,
389                                     a->texture[i].data.text.shadow_offset_y,
390                                     a->texture[i].data.text.maxwidth);
391             w = MAX(w, m->width);
392             g_free(m);
393             break;
394         case RR_TEXTURE_RGBA:
395             w += MAX(w, a->texture[i].data.rgba.width);
396             break;
397         case RR_TEXTURE_LINE_ART:
398             w += MAX(w, MAX(a->texture[i].data.lineart.x1,
399                             a->texture[i].data.lineart.x2));
400             break;
401         }
402     }
403
404     RrMargins(a, &l, &t, &r, &b);
405
406     w += l + r;
407
408     if (w < 1) w = 1;
409     return w;
410 }
411
412 gint RrMinHeight(RrAppearance *a)
413 {
414     gint i;
415     gint l, t, r, b;
416     gint h = 0;
417
418     for (i = 0; i < a->textures; ++i) {
419         switch (a->texture[i].type) {
420         case RR_TEXTURE_NONE:
421             break;
422         case RR_TEXTURE_MASK:
423             h = MAX(h, a->texture[i].data.mask.mask->height);
424             break;
425         case RR_TEXTURE_TEXT:
426             h += MAX(h, RrFontHeight(a->texture[i].data.text.font,
427                                      a->texture[i].data.text.shadow_offset_y));
428             break;
429         case RR_TEXTURE_RGBA:
430             h += MAX(h, a->texture[i].data.rgba.height);
431             break;
432         case RR_TEXTURE_LINE_ART:
433             h += MAX(h, MAX(a->texture[i].data.lineart.y1,
434                             a->texture[i].data.lineart.y2));
435             break;
436         }
437     }
438
439     RrMargins(a, &l, &t, &r, &b);
440
441     h += t + b;
442
443     if (h < 1) h = 1;
444     return h;
445 }
446
447 static void reverse_bits(gchar *c, gint n)
448 {
449     gint i;
450     for (i = 0; i < n; i++, c++)
451         *c = (((*c * 0x0802UL & 0x22110UL) |
452                (*c * 0x8020UL & 0x88440UL)) * 0x10101UL) >> 16;
453 }
454
455 gboolean RrPixmapToRGBA(const RrInstance *inst,
456                         Pixmap pmap, Pixmap mask,
457                         gint *w, gint *h, RrPixel32 **data)
458 {
459     Window xr;
460     gint xx, xy;
461     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
462     XImage *xi, *xm = NULL;
463
464     if (!XGetGeometry(RrDisplay(inst), pmap,
465                       &xr, &xx, &xy, &pw, &ph, &xb, &xd))
466         return FALSE;
467
468     if (mask) {
469         if (!XGetGeometry(RrDisplay(inst), mask,
470                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
471             return FALSE;
472         if (pw != mw || ph != mh || xd != 1)
473             return FALSE;
474     }
475
476     xi = XGetImage(RrDisplay(inst), pmap,
477                    0, 0, pw, ph, 0xffffffff, ZPixmap);
478     if (!xi)
479         return FALSE;
480
481     if (mask) {
482         xm = XGetImage(RrDisplay(inst), mask,
483                        0, 0, mw, mh, 0xffffffff, ZPixmap);
484         if (!xm) {
485             XDestroyImage(xi);
486             return FALSE;
487         }
488         if ((xm->bits_per_pixel == 1) && (xm->bitmap_bit_order != LSBFirst))
489             reverse_bits(xm->data, xm->bytes_per_line * xm->height);
490     }
491
492     if ((xi->bits_per_pixel == 1) && (xi->bitmap_bit_order != LSBFirst))
493         reverse_bits(xi->data, xi->bytes_per_line * xi->height);
494
495     *data = g_new(RrPixel32, pw * ph);
496     RrIncreaseDepth(inst, *data, xi);
497
498     if (mask) {
499         /* apply transparency from the mask */
500         di = 0;
501         for (i = 0, y = 0; y < ph; ++y) {
502             for (x = 0; x < pw; ++x, ++i) {
503                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
504                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
505             }
506             di += xm->bytes_per_line;
507         }
508     }
509
510     *w = pw;
511     *h = ph;
512
513     XDestroyImage(xi);
514     if (mask)
515         XDestroyImage(xm);
516
517     return TRUE;
518 }