black for parentrelative so we can test icons
[mikachu/openbox.git] / render / render.c
1 #include <X11/Xlib.h>
2 #include <X11/Xutil.h>
3 #include <glib.h>
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 "../kernel/openbox.h"
11
12 int render_depth;
13 Visual *render_visual;
14 Colormap render_colormap;
15 int render_red_offset = 0, render_green_offset = 0, render_blue_offset = 0;
16 int render_red_shift, render_green_shift, render_blue_shift;
17
18 void render_startup(void)
19 {
20     paint = x_paint;
21
22     render_depth = DefaultDepth(ob_display, ob_screen);
23     render_visual = DefaultVisual(ob_display, ob_screen);
24     render_colormap = DefaultColormap(ob_display, ob_screen);
25
26     if (render_depth < 8) {
27       XVisualInfo vinfo_template, *vinfo_return;
28       /* search for a TrueColor Visual... if we can't find one...
29          we will use the default visual for the screen */
30       int vinfo_nitems;
31       int best = -1;
32
33       vinfo_template.screen = ob_screen;
34       vinfo_template.class = TrueColor;
35       vinfo_return = XGetVisualInfo(ob_display,
36                                     VisualScreenMask | VisualClassMask,
37                                     &vinfo_template, &vinfo_nitems);
38       if (vinfo_return) {
39         int i;
40         int max_depth = 1;
41         for (i = 0; i < vinfo_nitems; ++i) {
42           if (vinfo_return[i].depth > max_depth) {
43             if (max_depth == 24 && vinfo_return[i].depth > 24)
44                 break;          /* prefer 24 bit over 32 */
45             max_depth = vinfo_return[i].depth;
46             best = i;
47           }
48         }
49         if (max_depth < render_depth) best = -1;
50       }
51       if (best != -1) {
52         render_depth = vinfo_return[best].depth;
53         render_visual = vinfo_return[best].visual;
54         render_colormap = XCreateColormap(ob_display, ob_root, render_visual,
55                                           AllocNone);
56       }
57       XFree(vinfo_return);
58     }  
59   truecolor_startup();
60 }
61
62 void truecolor_startup(void)
63 {
64   unsigned long red_mask, green_mask, blue_mask;
65   XImage *timage = NULL;
66
67   timage = XCreateImage(ob_display, render_visual, render_depth,
68                         ZPixmap, 0, NULL, 1, 1, 32, 0);
69   g_assert(timage != NULL);
70   /* find the offsets for each color in the visual's masks */
71   red_mask = timage->red_mask;
72   green_mask = timage->green_mask;
73   blue_mask = timage->blue_mask;
74
75   render_red_offset = 0;
76   render_green_offset = 0;
77   render_blue_offset = 0;
78
79   while (! (red_mask & 1))   { render_red_offset++;   red_mask   >>= 1; }
80   while (! (green_mask & 1)) { render_green_offset++; green_mask >>= 1; }
81   while (! (blue_mask & 1))  { render_blue_offset++;  blue_mask  >>= 1; }
82
83   render_red_shift = render_green_shift = render_blue_shift = 8;
84   while (red_mask)   { red_mask   >>= 1; render_red_shift--;   }
85   while (green_mask) { green_mask >>= 1; render_green_shift--; }
86   while (blue_mask)  { blue_mask  >>= 1; render_blue_shift--;  }
87   XFree(timage);
88 }
89
90 void x_paint(Window win, Appearance *l, int x, int y, int w, int h)
91 {
92     int i;
93     XImage *im = NULL;
94     Pixmap oldp;
95
96     if (w <= 0 || h <= 0 || x+w <= 0 || y+h <= 0) return;
97
98     g_assert(l->surface.type == Surface_Planar);
99
100     oldp = l->pixmap; /* save to free after changing the visible pixmap */
101     l->pixmap = XCreatePixmap(ob_display, ob_root, x+w, y+h, render_depth);
102     g_assert(l->pixmap != None);
103
104     if (l->xftdraw != NULL)
105         XftDrawDestroy(l->xftdraw);
106     l->xftdraw = XftDrawCreate(ob_display, l->pixmap, render_visual, 
107                                render_colormap);
108     g_assert(l->xftdraw != NULL);
109
110     g_free(l->surface.data.planar.pixel_data);
111     l->surface.data.planar.pixel_data = g_new(pixel32, w * h);
112
113
114     if (l->surface.data.planar.grad == Background_ParentRelative) {
115         memset(l->surface.data.planar.pixel_data, 0xFF, w*h*4);
116     }
117     else if (l->surface.data.planar.grad == Background_Solid)
118         gradient_solid(l, x, y, w, h);
119     else gradient_render(&l->surface, w, h);
120
121 /*this is not the right place for this code, it's only here so
122   text rendering shows up for now.
123 */
124     if (l->surface.data.planar.grad != Background_Solid) {
125         im = XCreateImage(ob_display, render_visual, render_depth,
126                           ZPixmap, 0, NULL, w, h, 32, 0);
127         g_assert(im != NULL);
128         im->byte_order = endian;
129         im->data = (char *)l->surface.data.planar.pixel_data;
130         reduce_depth((pixel32*)im->data, im);
131         XPutImage(ob_display, l->pixmap, DefaultGC(ob_display, ob_screen),
132                   im, 0, 0, x, y, w, h);
133         im->data = NULL;
134         XDestroyImage(im);
135     }
136
137     for (i = 0; i < l->textures; i++) {
138         switch (l->texture[i].type) {
139         case Text:
140             if (l->xftdraw == NULL) {
141                 l->xftdraw = XftDrawCreate(ob_display, l->pixmap, 
142                                         render_visual, render_colormap);
143             }
144             font_draw(l->xftdraw, &l->texture[i].data.text, 
145                       &l->texture[i].position);
146         break;
147         case Bitmask:
148             if (l->texture[i].data.mask.color->gc == None)
149                 color_allocate_gc(l->texture[i].data.mask.color);
150             mask_draw(l->pixmap, &l->texture[i].data.mask,
151                       &l->texture[i].position);
152         break;
153         case RGBA:
154             image_draw(l->surface.data.planar.pixel_data, 
155                        &l->texture[i].data.rgba,
156                        &l->texture[i].position);
157         break;
158         }
159     }
160     XSetWindowBackgroundPixmap(ob_display, win, l->pixmap);
161     XClearWindow(ob_display, win);
162     if (oldp != None) XFreePixmap(ob_display, oldp);
163 }
164
165 /*
166 void gl_paint(Window win, Appearance *l)
167 {
168     glXMakeCurrent(ob_display, win, gl_context);
169 }
170 */
171
172 void render_shutdown(void)
173 {
174 }
175
176 Appearance *appearance_new(SurfaceType type, int numtex)
177 {
178   PlanarSurface *p;
179   Appearance *out;
180
181   out = g_new(Appearance, 1);
182   out->surface.type = type;
183   out->textures = numtex;
184   out->xftdraw = NULL;
185   if (numtex) out->texture = g_new0(Texture, numtex);
186   else out->texture = NULL;
187   out->pixmap = None;
188
189   switch (type) {
190   case Surface_Planar:
191     p = &out->surface.data.planar;
192     p->primary = NULL;
193     p->secondary = NULL;
194     p->border_color = NULL;
195     p->pixel_data = NULL;
196     break;
197   }
198   return out;
199 }
200
201 Appearance *appearance_copy(Appearance *orig)
202 {
203     PlanarSurface *spo, *spc;
204     Appearance *copy = g_new(Appearance, 1);
205     copy->surface.type = orig->surface.type;
206     switch (orig->surface.type) {
207     case Surface_Planar:
208         spo = &(orig->surface.data.planar);
209         spc = &(copy->surface.data.planar);
210         spc->grad = spo->grad;
211         spc->relief = spo->relief;
212         spc->bevel = spo->bevel;
213         if (spo->primary != NULL)
214             spc->primary = color_new(spo->primary->r,
215                                      spo->primary->g, 
216                                      spo->primary->b);
217         else spc->primary = NULL;
218
219         if (spo->secondary != NULL)
220             spc->secondary = color_new(spo->secondary->r,
221                                        spo->secondary->g,
222                                        spo->secondary->b);
223         else spc->secondary = NULL;
224
225         if (spo->border_color != NULL)
226             spc->border_color = color_new(spo->border_color->r,
227                                           spo->border_color->g,
228                                           spo->border_color->b);
229         else spc->border_color = NULL;
230
231         spc->interlaced = spo->interlaced;
232         spc->border = spo->border;
233         spc->pixel_data = NULL;
234     break;
235     }
236     copy->textures = orig->textures;
237     copy->texture = g_memdup(orig->texture, orig->textures * sizeof(Texture));
238     copy->pixmap = None;
239     copy->xftdraw = NULL;
240     return copy;
241 }
242
243 void appearance_free(Appearance *a)
244 {
245     PlanarSurface *p;
246     if (a->pixmap != None) XFreePixmap(ob_display, a->pixmap);
247     if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
248     if (a->textures)
249         g_free(a->texture);
250     if (a->surface.type == Surface_Planar) {
251         p = &a->surface.data.planar;
252         if (p->primary != NULL) color_free(p->primary);
253         if (p->secondary != NULL) color_free(p->secondary);
254         if (p->border_color != NULL) color_free(p->border_color);
255         if (p->pixel_data != NULL) g_free(p->pixel_data);
256     }
257     g_free(a);
258 }