we use the offsets we get from the server, we should use the byte order too..
[dana/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 pixel_data_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     RrRect 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.pixel_data);
49     l->surface.pixel_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.pixel_data +
57                   l->surface.parentx + sw * l->surface.parenty);
58         dest = l->surface.pixel_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                     pixel_data_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_LINE_ART:
102             if (!transferred) {
103                 transferred = 1;
104                 if (l->surface.grad != RR_SURFACE_SOLID)
105                     pixel_data_to_pixmap(l, 0, 0, w, h);
106             }
107             XDrawLine(RrDisplay(l->inst), l->pixmap,
108                       RrColorGC(l->texture[i].data.lineart.color),
109                       l->texture[i].data.lineart.x1,
110                       l->texture[i].data.lineart.y1,
111                       l->texture[i].data.lineart.x2,
112                       l->texture[i].data.lineart.y2);
113             break;
114         case RR_TEXTURE_MASK:
115             if (!transferred) {
116                 transferred = 1;
117                 if (l->surface.grad != RR_SURFACE_SOLID)
118                     pixel_data_to_pixmap(l, 0, 0, w, h);
119             }
120             RrPixmapMaskDraw(l->pixmap, &l->texture[i].data.mask, &tarea);
121             break;
122         case RR_TEXTURE_RGBA:
123             g_assert(!transferred);
124             RrImageDraw(l->surface.pixel_data,
125                         &l->texture[i].data.rgba, &tarea);
126         break;
127         }
128     }
129
130     if (!transferred) {
131         transferred = 1;
132         if (l->surface.grad != RR_SURFACE_SOLID)
133             pixel_data_to_pixmap(l, 0, 0, w, h);
134     }
135
136     XSetWindowBackgroundPixmap(RrDisplay(l->inst), win, l->pixmap);
137     XClearWindow(RrDisplay(l->inst), win);
138     if (oldp) XFreePixmap(RrDisplay(l->inst), oldp);
139 }
140
141 RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
142 {
143   RrAppearance *out;
144
145   out = g_new0(RrAppearance, 1);
146   out->inst = inst;
147   out->textures = numtex;
148   if (numtex) out->texture = g_new0(RrTexture, numtex);
149
150   return out;
151 }
152
153 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
154 {
155     RrSurface *spo, *spc;
156     RrAppearance *copy = g_new(RrAppearance, 1);
157     gint i;
158
159     copy->inst = orig->inst;
160
161     spo = &(orig->surface);
162     spc = &(copy->surface);
163     spc->grad = spo->grad;
164     spc->relief = spo->relief;
165     spc->bevel = spo->bevel;
166     if (spo->primary != NULL)
167         spc->primary = RrColorNew(copy->inst,
168                                   spo->primary->r,
169                                   spo->primary->g, 
170                                   spo->primary->b);
171     else spc->primary = NULL;
172
173     if (spo->secondary != NULL)
174         spc->secondary = RrColorNew(copy->inst,
175                                     spo->secondary->r,
176                                     spo->secondary->g,
177                                     spo->secondary->b);
178     else spc->secondary = NULL;
179
180     if (spo->border_color != NULL)
181         spc->border_color = RrColorNew(copy->inst,
182                                        spo->border_color->r,
183                                        spo->border_color->g,
184                                        spo->border_color->b);
185     else spc->border_color = NULL;
186
187     if (spo->interlace_color != NULL)
188         spc->interlace_color = RrColorNew(copy->inst,
189                                        spo->interlace_color->r,
190                                        spo->interlace_color->g,
191                                        spo->interlace_color->b);
192     else spc->interlace_color = NULL;
193
194     if (spo->bevel_dark != NULL)
195         spc->bevel_dark = RrColorNew(copy->inst,
196                                      spo->bevel_dark->r,
197                                      spo->bevel_dark->g,
198                                      spo->bevel_dark->b);
199     else spc->bevel_dark = NULL;
200
201     if (spo->bevel_light != NULL)
202         spc->bevel_light = RrColorNew(copy->inst,
203                                       spo->bevel_light->r,
204                                       spo->bevel_light->g,
205                                       spo->bevel_light->b);
206     else spc->bevel_light = NULL;
207
208     spc->interlaced = spo->interlaced;
209     spc->border = spo->border;
210     spc->parent = NULL;
211     spc->parentx = spc->parenty = 0;
212     spc->pixel_data = NULL;
213
214     copy->textures = orig->textures;
215     copy->texture = g_memdup(orig->texture,
216                              orig->textures * sizeof(RrTexture));
217     for (i = 0; i < copy->textures; ++i)
218         if (copy->texture[i].type == RR_TEXTURE_RGBA) {
219             g_free(copy->texture[i].data.rgba.cache);
220             copy->texture[i].data.rgba.cache = NULL;
221         }
222     copy->pixmap = None;
223     copy->xftdraw = NULL;
224     copy->w = copy->h = 0;
225     return copy;
226 }
227
228 void RrAppearanceFree(RrAppearance *a)
229 {
230     gint i;
231
232     if (a) {
233         RrSurface *p;
234         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
235         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
236         for (i = 0; i < a->textures; ++i)
237             if (a->texture[i].type == RR_TEXTURE_RGBA) {
238                 g_free(a->texture[i].data.rgba.cache);
239                 a->texture[i].data.rgba.cache = NULL;
240             }
241         if (a->textures)
242             g_free(a->texture);
243         p = &a->surface;
244         RrColorFree(p->primary);
245         RrColorFree(p->secondary);
246         RrColorFree(p->border_color);
247         RrColorFree(p->interlace_color);
248         RrColorFree(p->bevel_dark);
249         RrColorFree(p->bevel_light);
250         g_free(p->pixel_data);
251
252         g_free(a);
253     }
254 }
255
256
257 static void pixel_data_to_pixmap(RrAppearance *l,
258                                  gint x, gint y, gint w, gint h)
259 {
260     RrPixel32 *in, *scratch;
261     Pixmap out;
262     XImage *im = NULL;
263     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
264                       ZPixmap, 0, NULL, w, h, 32, 0);
265     g_assert(im != NULL);
266
267     in = l->surface.pixel_data;
268     out = l->pixmap;
269
270 /* this malloc is a complete waste of time on normal 32bpp
271    as reduce_depth just sets im->data = data and returns
272 */
273     scratch = g_new(RrPixel32, im->width * im->height);
274     im->data = (char*) scratch;
275     RrReduceDepth(l->inst, in, im);
276     XPutImage(RrDisplay(l->inst), out,
277               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
278               im, 0, 0, x, y, w, h);
279     im->data = NULL;
280     XDestroyImage(im);
281     g_free(scratch);
282 }
283
284 void RrMinsize(RrAppearance *l, gint *w, gint *h)
285 {
286     gint i;
287     gint m;
288     *w = *h = 0;
289
290     for (i = 0; i < l->textures; ++i) {
291         switch (l->texture[i].type) {
292         case RR_TEXTURE_NONE:
293             break;
294         case RR_TEXTURE_MASK:
295             *w = MAX(*w, l->texture[i].data.mask.mask->width);
296             *h = MAX(*h, l->texture[i].data.mask.mask->height);
297             break;
298         case RR_TEXTURE_TEXT:
299             m = RrFontMeasureString(l->texture[i].data.text.font,
300                                     l->texture[i].data.text.string);
301             *w = MAX(*w, m);
302             m = RrFontHeight(l->texture[i].data.text.font);
303             *h += MAX(*h, m);
304             break;
305         case RR_TEXTURE_RGBA:
306             *w += MAX(*w, l->texture[i].data.rgba.width);
307             *h += MAX(*h, l->texture[i].data.rgba.height);
308             break;
309         case RR_TEXTURE_LINE_ART:
310             *w += MAX(*w, MAX(l->texture[i].data.lineart.x1,
311                               l->texture[i].data.lineart.x2));
312             *h += MAX(*h, MAX(l->texture[i].data.lineart.y1,
313                               l->texture[i].data.lineart.y2));
314             break;
315         }
316     }
317
318     if (l->surface.relief != RR_RELIEF_FLAT) {
319         switch (l->surface.bevel) {
320         case RR_BEVEL_1:
321             *w += 2;
322             *h += 2;
323             break;
324         case RR_BEVEL_2:
325             *w += 4;
326             *h += 4;
327             break;
328         }
329     } else if (l->surface.border) {
330         *w += 2;
331         *h += 2;
332     }
333
334     if (*w < 1) *w = 1;
335     if (*h < 1) *h = 1;
336 }
337
338 gboolean RrPixmapToRGBA(const RrInstance *inst,
339                         Pixmap pmap, Pixmap mask,
340                         gint *w, gint *h, RrPixel32 **data)
341 {
342     Window xr;
343     gint xx, xy;
344     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
345     XImage *xi, *xm = NULL;
346
347     if (!XGetGeometry(RrDisplay(inst),
348                       pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
349         return FALSE;
350     if (mask) {
351         if (!XGetGeometry(RrDisplay(inst), mask,
352                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
353             return FALSE;
354         if (pw != mw || ph != mh || xd != 1)
355             return FALSE;
356     }
357
358     xi = XGetImage(RrDisplay(inst), pmap,
359                    0, 0, pw, ph, 0xffffffff, ZPixmap);
360     if (!xi)
361         return FALSE;
362
363     if (mask) {
364         xm = XGetImage(RrDisplay(inst), mask,
365                        0, 0, mw, mh, 0xffffffff, ZPixmap);
366         if (!xm)
367             return FALSE;
368     }
369
370     *data = g_new(RrPixel32, pw * ph);
371     RrIncreaseDepth(inst, *data, xi);
372
373     if (mask) {
374         /* apply transparency from the mask */
375         di = 0;
376         for (i = 0, y = 0; y < ph; ++y) {
377             for (x = 0; x < pw; ++x, ++i) {
378                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
379                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
380             }
381             di += xm->bytes_per_line;
382         }
383     }
384
385     *w = pw;
386     *h = ph;
387
388     return TRUE;
389 }