copy/free the new interlaced color
[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             g_message("%d %d -> %d %d",
108                       l->texture[i].data.lineart.x1,
109                       l->texture[i].data.lineart.y1,
110                       l->texture[i].data.lineart.x2,
111                       l->texture[i].data.lineart.y2);
112             XDrawLine(RrDisplay(l->inst), l->pixmap,
113                       RrColorGC(l->texture[i].data.lineart.color),
114                       l->texture[i].data.lineart.x1,
115                       l->texture[i].data.lineart.y1,
116                       l->texture[i].data.lineart.x2,
117                       l->texture[i].data.lineart.y2);
118             break;
119         case RR_TEXTURE_MASK:
120             if (!transferred) {
121                 transferred = 1;
122                 if (l->surface.grad != RR_SURFACE_SOLID)
123                     pixel_data_to_pixmap(l, 0, 0, w, h);
124             }
125             RrPixmapMaskDraw(l->pixmap, &l->texture[i].data.mask, &tarea);
126             break;
127         case RR_TEXTURE_RGBA:
128             g_assert(!transferred);
129             RrImageDraw(l->surface.pixel_data,
130                         &l->texture[i].data.rgba, &tarea);
131         break;
132         }
133     }
134
135     if (!transferred) {
136         transferred = 1;
137         if (l->surface.grad != RR_SURFACE_SOLID)
138             pixel_data_to_pixmap(l, 0, 0, w, h);
139     }
140
141     XSetWindowBackgroundPixmap(RrDisplay(l->inst), win, l->pixmap);
142     XClearWindow(RrDisplay(l->inst), win);
143     if (oldp) XFreePixmap(RrDisplay(l->inst), oldp);
144 }
145
146 RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
147 {
148   RrAppearance *out;
149
150   out = g_new0(RrAppearance, 1);
151   out->inst = inst;
152   out->textures = numtex;
153   if (numtex) out->texture = g_new0(RrTexture, numtex);
154
155   return out;
156 }
157
158 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
159 {
160     RrSurface *spo, *spc;
161     RrAppearance *copy = g_new(RrAppearance, 1);
162     gint i;
163
164     copy->inst = orig->inst;
165
166     spo = &(orig->surface);
167     spc = &(copy->surface);
168     spc->grad = spo->grad;
169     spc->relief = spo->relief;
170     spc->bevel = spo->bevel;
171     if (spo->primary != NULL)
172         spc->primary = RrColorNew(copy->inst,
173                                   spo->primary->r,
174                                   spo->primary->g, 
175                                   spo->primary->b);
176     else spc->primary = NULL;
177
178     if (spo->secondary != NULL)
179         spc->secondary = RrColorNew(copy->inst,
180                                     spo->secondary->r,
181                                     spo->secondary->g,
182                                     spo->secondary->b);
183     else spc->secondary = NULL;
184
185     if (spo->border_color != NULL)
186         spc->border_color = RrColorNew(copy->inst,
187                                        spo->border_color->r,
188                                        spo->border_color->g,
189                                        spo->border_color->b);
190     else spc->border_color = NULL;
191
192     if (spo->interlaced_color != NULL)
193         spc->interlaced_color = RrColorNew(copy->inst,
194                                        spo->interlaced_color->r,
195                                        spo->interlaced_color->g,
196                                        spo->interlaced_color->b);
197     else spc->interlaced_color = NULL;
198
199     if (spo->bevel_dark != NULL)
200         spc->bevel_dark = RrColorNew(copy->inst,
201                                      spo->bevel_dark->r,
202                                      spo->bevel_dark->g,
203                                      spo->bevel_dark->b);
204     else spc->bevel_dark = NULL;
205
206     if (spo->bevel_light != NULL)
207         spc->bevel_light = RrColorNew(copy->inst,
208                                       spo->bevel_light->r,
209                                       spo->bevel_light->g,
210                                       spo->bevel_light->b);
211     else spc->bevel_light = NULL;
212
213     spc->interlaced = spo->interlaced;
214     spc->border = spo->border;
215     spc->parent = NULL;
216     spc->parentx = spc->parenty = 0;
217     spc->pixel_data = NULL;
218
219     copy->textures = orig->textures;
220     copy->texture = g_memdup(orig->texture,
221                              orig->textures * sizeof(RrTexture));
222     for (i = 0; i < copy->textures; ++i)
223         if (copy->texture[i].type == RR_TEXTURE_RGBA) {
224             g_free(copy->texture[i].data.rgba.cache);
225             copy->texture[i].data.rgba.cache = NULL;
226         }
227     copy->pixmap = None;
228     copy->xftdraw = NULL;
229     copy->w = copy->h = 0;
230     return copy;
231 }
232
233 void RrAppearanceFree(RrAppearance *a)
234 {
235     gint i;
236
237     if (a) {
238         RrSurface *p;
239         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
240         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
241         for (i = 0; i < a->textures; ++i)
242             if (a->texture[i].type == RR_TEXTURE_RGBA) {
243                 g_free(a->texture[i].data.rgba.cache);
244                 a->texture[i].data.rgba.cache = NULL;
245             }
246         if (a->textures)
247             g_free(a->texture);
248         p = &a->surface;
249         RrColorFree(p->primary);
250         RrColorFree(p->secondary);
251         RrColorFree(p->border_color);
252         RrColorFree(p->interlaced_color);
253         RrColorFree(p->bevel_dark);
254         RrColorFree(p->bevel_light);
255         g_free(p->pixel_data);
256
257         g_free(a);
258     }
259 }
260
261
262 static void pixel_data_to_pixmap(RrAppearance *l,
263                                  gint x, gint y, gint w, gint h)
264 {
265     RrPixel32 *in, *scratch;
266     Pixmap out;
267     XImage *im = NULL;
268     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
269                       ZPixmap, 0, NULL, w, h, 32, 0);
270     g_assert(im != NULL);
271
272     in = l->surface.pixel_data;
273     out = l->pixmap;
274
275     im->byte_order = LSBFirst;
276 /* this malloc is a complete waste of time on normal 32bpp
277    as reduce_depth just sets im->data = data and returns
278 */
279     scratch = g_new(RrPixel32, im->width * im->height);
280     im->data = (char*) scratch;
281     RrReduceDepth(l->inst, in, im);
282     XPutImage(RrDisplay(l->inst), out,
283               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
284               im, 0, 0, x, y, w, h);
285     im->data = NULL;
286     XDestroyImage(im);
287     g_free(scratch);
288 }
289
290 void RrMinsize(RrAppearance *l, gint *w, gint *h)
291 {
292     gint i;
293     gint m;
294     *w = *h = 0;
295
296     for (i = 0; i < l->textures; ++i) {
297         switch (l->texture[i].type) {
298         case RR_TEXTURE_NONE:
299             break;
300         case RR_TEXTURE_MASK:
301             *w = MAX(*w, l->texture[i].data.mask.mask->width);
302             *h = MAX(*h, l->texture[i].data.mask.mask->height);
303             break;
304         case RR_TEXTURE_TEXT:
305             m = RrFontMeasureString(l->texture[i].data.text.font,
306                                     l->texture[i].data.text.string);
307             *w = MAX(*w, m);
308             m = RrFontHeight(l->texture[i].data.text.font);
309             *h += MAX(*h, m);
310             break;
311         case RR_TEXTURE_RGBA:
312             *w += MAX(*w, l->texture[i].data.rgba.width);
313             *h += MAX(*h, l->texture[i].data.rgba.height);
314             break;
315         case RR_TEXTURE_LINE_ART:
316             *w += MAX(*w, MAX(l->texture[i].data.lineart.x1,
317                               l->texture[i].data.lineart.x2));
318             *h += MAX(*h, MAX(l->texture[i].data.lineart.y1,
319                               l->texture[i].data.lineart.y2));
320             break;
321         }
322     }
323
324     if (l->surface.relief != RR_RELIEF_FLAT) {
325         switch (l->surface.bevel) {
326         case RR_BEVEL_1:
327             *w += 2;
328             *h += 2;
329             break;
330         case RR_BEVEL_2:
331             *w += 4;
332             *h += 4;
333             break;
334         }
335     } else if (l->surface.border) {
336         *w += 2;
337         *h += 2;
338     }
339
340     if (*w < 1) *w = 1;
341     if (*h < 1) *h = 1;
342 }
343
344 gboolean RrPixmapToRGBA(const RrInstance *inst,
345                         Pixmap pmap, Pixmap mask,
346                         gint *w, gint *h, RrPixel32 **data)
347 {
348     Window xr;
349     gint xx, xy;
350     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
351     XImage *xi, *xm = NULL;
352
353     if (!XGetGeometry(RrDisplay(inst),
354                       pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
355         return FALSE;
356     if (mask) {
357         if (!XGetGeometry(RrDisplay(inst), mask,
358                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
359             return FALSE;
360         if (pw != mw || ph != mh || xd != 1)
361             return FALSE;
362     }
363
364     xi = XGetImage(RrDisplay(inst), pmap,
365                    0, 0, pw, ph, 0xffffffff, ZPixmap);
366     if (!xi)
367         return FALSE;
368
369     if (mask) {
370         xm = XGetImage(RrDisplay(inst), mask,
371                        0, 0, mw, mh, 0xffffffff, ZPixmap);
372         if (!xm)
373             return FALSE;
374     }
375
376     *data = g_new(RrPixel32, pw * ph);
377     RrIncreaseDepth(inst, *data, xi);
378
379     if (mask) {
380         /* apply transparency from the mask */
381         di = 0;
382         for (i = 0, y = 0; y < ph; ++y) {
383             for (x = 0; x < pw; ++x, ++i) {
384                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
385                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
386             }
387             di += xm->bytes_per_line;
388         }
389     }
390
391     *w = pw;
392     *h = ph;
393
394     return TRUE;
395 }