dont destroy the match pattern, it seems that Xft holds onto the pointer
[mikachu/openbox.git] / render / render.c
1 #include <X11/Xlib.h>
2 #include <X11/Xutil.h>
3
4 #include "render.h"
5 #include "gradient.h"
6 #include "font.h"
7 #include "mask.h"
8 #include "color.h"
9 #include "image.h"
10 #include "theme.h"
11
12 #include <glib.h>
13
14 #ifdef HAVE_STDLIB_H
15 #  include <stdlib.h>
16 #endif
17
18 static void RrPixel32_to_pixmap(RrAppearance *l,
19                                 gint x, gint y, gint w, gint h);
20
21 void RrPaint(RrAppearance *l, Window win, gint w, gint h)
22 {
23     int i, transferred = 0, sw;
24     RrPixel32 *source, *dest;
25     Pixmap oldp;
26     Rect tarea; /* area in which to draw textures */
27     gboolean resized;
28
29     if (w <= 0 || h <= 0) return;
30
31     resized = (l->w != w || l->h != h);
32
33     oldp = l->pixmap; /* save to free after changing the visible pixmap */
34     l->pixmap = XCreatePixmap(RrDisplay(l->inst),
35                               RrRootWindow(l->inst),
36                               w, h, RrDepth(l->inst));
37
38     g_assert(l->pixmap != None);
39     l->w = w;
40     l->h = h;
41
42     if (l->xftdraw != NULL)
43         XftDrawDestroy(l->xftdraw);
44     l->xftdraw = XftDrawCreate(RrDisplay(l->inst), l->pixmap,
45                                RrVisual(l->inst), RrColormap(l->inst));
46     g_assert(l->xftdraw != NULL);
47
48     g_free(l->surface.RrPixel_data);
49     l->surface.RrPixel_data = g_new(RrPixel32, w * h);
50
51     if (l->surface.grad == RR_SURFACE_PARENTREL) {
52         g_assert (l->surface.parent);
53         g_assert (l->surface.parent->w);
54
55         sw = l->surface.parent->w;
56         source = (l->surface.parent->surface.RrPixel_data +
57                   l->surface.parentx + sw * l->surface.parenty);
58         dest = l->surface.RrPixel_data;
59         for (i = 0; i < h; i++, source += sw, dest += w) {
60             memcpy(dest, source, w * sizeof(RrPixel32));
61         }
62     }else
63         RrRender(l, w, h);
64
65     RECT_SET(tarea, 0, 0, w, h);
66     if (l->surface.grad != RR_SURFACE_PARENTREL) {
67         if (l->surface.relief != RR_RELIEF_FLAT) {
68             switch (l->surface.bevel) {
69             case RR_BEVEL_1:
70                 tarea.x += 1; tarea.y += 1;
71                 tarea.width -= 2; tarea.height -= 2;
72                 break;
73             case RR_BEVEL_2:
74                 tarea.x += 2; tarea.y += 2;
75                 tarea.width -= 4; tarea.height -= 4;
76                 break;
77             }
78         } else if (l->surface.border) {
79             tarea.x += 1; tarea.y += 1;
80             tarea.width -= 2; tarea.height -= 2;
81         }
82     }
83
84     for (i = 0; i < l->textures; i++) {
85         switch (l->texture[i].type) {
86         case RR_TEXTURE_NONE:
87             break;
88         case RR_TEXTURE_TEXT:
89             if (!transferred) {
90                 transferred = 1;
91                 if (l->surface.grad != RR_SURFACE_SOLID)
92                     RrPixel32_to_pixmap(l, 0, 0, w, h);
93             }
94             if (l->xftdraw == NULL) {
95                 l->xftdraw = XftDrawCreate(RrDisplay(l->inst), l->pixmap, 
96                                            RrVisual(l->inst),
97                                            RrColormap(l->inst));
98             }
99             RrFontDraw(l->xftdraw, &l->texture[i].data.text, &tarea);
100         break;
101         case RR_TEXTURE_MASK:
102             if (!transferred) {
103                 transferred = 1;
104                 if (l->surface.grad != RR_SURFACE_SOLID)
105                     RrPixel32_to_pixmap(l, 0, 0, w, h);
106             }
107             if (l->texture[i].data.mask.color->gc == None)
108                 RrColorAllocateGC(l->texture[i].data.mask.color);
109             RrPixmapMaskDraw(l->pixmap, &l->texture[i].data.mask, &tarea);
110         break;
111         case RR_TEXTURE_RGBA:
112             RrImageDraw(l->surface.RrPixel_data,
113                         &l->texture[i].data.rgba, &tarea);
114         break;
115         }
116     }
117
118     if (!transferred) {
119         transferred = 1;
120         if (l->surface.grad != RR_SURFACE_SOLID)
121             RrPixel32_to_pixmap(l, 0, 0, w, h);
122     }
123
124
125     XSetWindowBackgroundPixmap(RrDisplay(l->inst), win, l->pixmap);
126     XClearWindow(RrDisplay(l->inst), win);
127     if (oldp) XFreePixmap(RrDisplay(l->inst), oldp);
128 }
129
130 RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
131 {
132   RrAppearance *out;
133
134   out = g_new0(RrAppearance, 1);
135   out->inst = inst;
136   out->textures = numtex;
137   if (numtex) out->texture = g_new0(RrTexture, numtex);
138
139   return out;
140 }
141
142 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
143 {
144     RrSurface *spo, *spc;
145     RrAppearance *copy = g_new(RrAppearance, 1);
146
147     copy->inst = orig->inst;
148
149     spo = &(orig->surface);
150     spc = &(copy->surface);
151     spc->grad = spo->grad;
152     spc->relief = spo->relief;
153     spc->bevel = spo->bevel;
154     if (spo->primary != NULL)
155         spc->primary = RrColorNew(copy->inst,
156                                   spo->primary->r,
157                                   spo->primary->g, 
158                                   spo->primary->b);
159     else spc->primary = NULL;
160
161     if (spo->secondary != NULL)
162         spc->secondary = RrColorNew(copy->inst,
163                                     spo->secondary->r,
164                                     spo->secondary->g,
165                                     spo->secondary->b);
166     else spc->secondary = NULL;
167
168     if (spo->border_color != NULL)
169         spc->border_color = RrColorNew(copy->inst,
170                                        spo->border_color->r,
171                                        spo->border_color->g,
172                                        spo->border_color->b);
173     else spc->border_color = NULL;
174
175     if (spo->bevel_dark != NULL)
176         spc->bevel_dark = RrColorNew(copy->inst,
177                                      spo->bevel_dark->r,
178                                      spo->bevel_dark->g,
179                                      spo->bevel_dark->b);
180     else spc->bevel_dark = NULL;
181
182     if (spo->bevel_light != NULL)
183         spc->bevel_light = RrColorNew(copy->inst,
184                                       spo->bevel_light->r,
185                                       spo->bevel_light->g,
186                                       spo->bevel_light->b);
187     else spc->bevel_light = NULL;
188
189     spc->interlaced = spo->interlaced;
190     spc->border = spo->border;
191     spc->RrPixel_data = NULL;
192
193     copy->textures = orig->textures;
194     copy->texture = g_memdup(orig->texture,
195                              orig->textures * sizeof(RrTexture));
196     copy->pixmap = None;
197     copy->xftdraw = NULL;
198     copy->w = copy->h = 0;
199     return copy;
200 }
201
202 void RrAppearanceFree(RrAppearance *a)
203 {
204     if (a) {
205         RrSurface *p;
206         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
207         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
208         if (a->textures)
209             g_free(a->texture);
210         p = &a->surface;
211         RrColorFree(p->primary);
212         RrColorFree(p->secondary);
213         RrColorFree(p->border_color);
214         RrColorFree(p->bevel_dark);
215         RrColorFree(p->bevel_light);
216         g_free(p->RrPixel_data);
217
218         g_free(a);
219     }
220 }
221
222
223 static void RrPixel32_to_pixmap(RrAppearance *l, gint x, gint y, gint w, gint h)
224 {
225     RrPixel32 *in, *scratch;
226     Pixmap out;
227     XImage *im = NULL;
228     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
229                       ZPixmap, 0, NULL, w, h, 32, 0);
230     g_assert(im != NULL);
231
232     in = l->surface.RrPixel_data;
233     out = l->pixmap;
234
235     im->byte_order = RrEndian;
236 /* this malloc is a complete waste of time on normal 32bpp
237    as reduce_depth just sets im->data = data and returns
238 */
239     scratch = g_new(RrPixel32, im->width * im->height);
240     im->data = (char*) scratch;
241     RrReduceDepth(l->inst, in, im);
242     XPutImage(RrDisplay(l->inst), out,
243               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
244               im, 0, 0, x, y, w, h);
245     im->data = NULL;
246     XDestroyImage(im);
247     g_free(scratch);
248 }
249
250 void RrMinsize(RrAppearance *l, gint *w, gint *h)
251 {
252     gint i;
253     gint m;
254     *w = *h = 0;
255
256     for (i = 0; i < l->textures; ++i) {
257         switch (l->texture[i].type) {
258         case RR_TEXTURE_NONE:
259             break;
260         case RR_TEXTURE_MASK:
261             *w = MAX(*w, l->texture[i].data.mask.mask->width);
262             *h = MAX(*h, l->texture[i].data.mask.mask->height);
263             break;
264         case RR_TEXTURE_TEXT:
265             m = RrFontMeasureString(l->texture[i].data.text.font,
266                                     l->texture[i].data.text.string);
267             *w = MAX(*w, m);
268             m = RrFontHeight(l->texture[i].data.text.font);
269             *h += MAX(*h, m);
270             break;
271         case RR_TEXTURE_RGBA:
272             *w += MAX(*w, l->texture[i].data.rgba.width);
273             *h += MAX(*h, l->texture[i].data.rgba.height);
274             break;
275         }
276     }
277
278     if (l->surface.relief != RR_RELIEF_FLAT) {
279         switch (l->surface.bevel) {
280         case RR_BEVEL_1:
281             *w += 2;
282             *h += 2;
283             break;
284         case RR_BEVEL_2:
285             *w += 4;
286             *h += 4;
287             break;
288         }
289     } else if (l->surface.border) {
290         *w += 2;
291         *h += 2;
292     }
293
294     if (*w < 1) *w = 1;
295     if (*h < 1) *h = 1;
296 }
297
298 gboolean RrPixmapToRGBA(const RrInstance *inst,
299                         Pixmap pmap, Pixmap mask,
300                         gint *w, gint *h, RrPixel32 **data)
301 {
302     Window xr;
303     gint xx, xy;
304     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
305     XImage *xi, *xm = NULL;
306
307     if (!XGetGeometry(RrDisplay(inst),
308                       pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
309         return FALSE;
310     if (mask) {
311         if (!XGetGeometry(RrDisplay(inst), mask,
312                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
313             return FALSE;
314         if (pw != mw || ph != mh || xd != 1)
315             return FALSE;
316     }
317
318     xi = XGetImage(RrDisplay(inst), pmap,
319                    0, 0, pw, ph, 0xffffffff, ZPixmap);
320     if (!xi)
321         return FALSE;
322
323     if (mask) {
324         xm = XGetImage(RrDisplay(inst), mask,
325                        0, 0, mw, mh, 0xffffffff, ZPixmap);
326         if (!xm)
327             return FALSE;
328     }
329
330     *data = g_new(RrPixel32, pw * ph);
331     RrIncreaseDepth(inst, *data, xi);
332
333     if (mask) {
334         /* apply transparency from the mask */
335         di = 0;
336         for (i = 0, y = 0; y < ph; ++y) {
337             for (x = 0; x < pw; ++x, ++i) {
338                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
339                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
340             }
341             di += xm->bytes_per_line;
342         }
343     }
344
345     *w = pw;
346     *h = ph;
347
348     return TRUE;
349 }