dont delete the pixmap until after changeing the visible one
[dana/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 "../kernel/openbox.h"
8
9 int render_depth;
10 Visual *render_visual;
11 Colormap render_colormap;
12
13 void render_startup(void)
14 {
15     paint = x_paint;
16
17     render_depth = DefaultDepth(ob_display, ob_screen);
18     render_visual = DefaultVisual(ob_display, ob_screen);
19     render_colormap = DefaultColormap(ob_display, ob_screen);
20
21     if (render_depth < 8) {
22       XVisualInfo vinfo_template, *vinfo_return;
23       // search for a TrueColor Visual... if we can't find one...
24       // we will use the default visual for the screen
25       int vinfo_nitems;
26       int best = -1;
27
28       vinfo_template.screen = ob_screen;
29       vinfo_template.class = TrueColor;
30       vinfo_return = XGetVisualInfo(ob_display,
31                                     VisualScreenMask | VisualClassMask,
32                                     &vinfo_template, &vinfo_nitems);
33       if (vinfo_return) {
34         int i;
35         int max_depth = 1;
36         for (i = 0; i < vinfo_nitems; ++i) {
37           if (vinfo_return[i].depth > max_depth) {
38             if (max_depth == 24 && vinfo_return[i].depth > 24)
39               break;          // prefer 24 bit over 32
40             max_depth = vinfo_return[i].depth;
41             best = i;
42           }
43         }
44         if (max_depth < render_depth) best = -1;
45       }
46       if (best != -1) {
47         render_depth = vinfo_return[best].depth;
48         render_visual = vinfo_return[best].visual;
49         render_colormap = XCreateColormap(ob_display, ob_root, render_visual,
50                                           AllocNone);
51       }
52       XFree(vinfo_return);
53     }  
54 }
55
56 void x_paint(Window win, Appearance *l, int w, int h)
57 {
58     int i;
59     XImage *im;
60     Pixmap oldp;
61
62     if (w <= 0 || h <= 0) return;
63
64     g_assert(l->surface.type == Surface_Planar);
65 //    printf("painting window %ld\n", win);
66
67     oldp = l->pixmap; /* save to free after changing the visible pixmap */
68     l->pixmap = XCreatePixmap(ob_display, ob_root, w, h, render_depth);
69     g_assert(l->pixmap != None);
70
71     if (l->xftdraw != NULL)
72         XftDrawDestroy(l->xftdraw);
73     l->xftdraw = XftDrawCreate(ob_display, l->pixmap, render_visual, 
74                                render_colormap);
75     g_assert(l->xftdraw != NULL);
76
77     if (l->surface.data.planar.pixel_data != NULL)
78         g_free(l->surface.data.planar.pixel_data);
79     l->surface.data.planar.pixel_data = g_new(pixel32, w * h);
80
81     if (l->surface.data.planar.grad == Background_Solid)
82         gradient_solid(l, w, h);
83     else gradient_render(&l->surface, w, h);
84     for (i = 0; i < l->textures; i++) {
85         switch (l->texture[i].type) {
86         case Text:
87             if (l->xftdraw == NULL) {
88                 l->xftdraw = XftDrawCreate(ob_display, l->pixmap, 
89                                         render_visual, render_colormap);
90             }
91             font_draw(l->xftdraw, &l->texture[i].data.text);
92         break;
93         }
94     }
95 //reduce depth
96     if (l->surface.data.planar.grad != Background_Solid) {
97         im = XCreateImage(ob_display, render_visual, render_depth,
98                           ZPixmap, 0, NULL, w, h, 32, 0);
99         g_assert(im != None);
100         im->byte_order = endian;
101         im->data = l->surface.data.planar.pixel_data;
102         XPutImage(ob_display, l->pixmap, DefaultGC(ob_display, ob_screen),
103                   im, 0, 0, 0, 0, w, h);
104         im->data = NULL;
105         XDestroyImage(im);
106     }
107     XSetWindowBackgroundPixmap(ob_display, win, l->pixmap);
108     XClearWindow(ob_display, win);
109     if (oldp != None) XFreePixmap(ob_display, oldp);
110 }
111
112 /*
113 void gl_paint(Window win, Appearance *l)
114 {
115     glXMakeCurrent(ob_display, win, gl_context);
116 }
117 */
118
119 void render_shutdown(void)
120 {
121 }
122
123 Appearance *appearance_new(SurfaceType type, int numtex)
124 {
125   PlanarSurface *p;
126   Appearance *out;
127
128   out = g_new(Appearance, 1);
129   out->surface.type = type;
130   out->textures = numtex;
131   out->xftdraw = NULL;
132   if (numtex) out->texture = g_new(Texture, numtex);
133   out->pixmap = None;
134
135   switch (type) {
136   case Surface_Planar:
137     p = &out->surface.data.planar;
138     p->primary = NULL;
139     p->secondary = NULL;
140     p->border_color = NULL;
141     p->pixel_data = NULL;
142     break;
143   }
144   return out;
145 }
146
147 Appearance *appearance_copy(Appearance *orig)
148 {
149     PlanarSurface *spo, *spc;
150     Appearance *copy = g_new(Appearance, 1);
151     copy->surface.type = orig->surface.type;
152     switch (orig->surface.type) {
153     case Surface_Planar:
154         spo = &(orig->surface.data.planar);
155         spc = &(copy->surface.data.planar);
156         spc->grad = spo->grad;
157         spc->relief = spo->relief;
158         spc->bevel = spo->bevel;
159         if (spo->primary != NULL)
160             spc->primary = color_new(spo->primary->r,
161                                      spo->primary->g, 
162                                      spo->primary->b);
163         else spc->primary = NULL;
164
165         if (spo->secondary != NULL)
166             spc->secondary = color_new(spo->secondary->r,
167                                        spo->secondary->g,
168                                        spo->secondary->b);
169         else spc->secondary = NULL;
170
171         if (spo->border_color != NULL)
172             spc->border_color = color_new(spo->border_color->r,
173                                           spo->border_color->g,
174                                           spo->border_color->b);
175         else spc->border_color = NULL;
176
177         spc->interlaced = spo->interlaced;
178         spc->border = spo->border;
179         spc->pixel_data = NULL;
180     break;
181     }
182     copy->textures = orig->textures;
183     if (orig->textures) {
184         copy->texture = malloc(orig->textures * sizeof(Texture));
185         memcpy(copy->texture, orig->texture, orig->textures * sizeof(Texture));
186     } else copy->texture = NULL;
187     copy->pixmap = None;
188     copy->xftdraw = NULL;
189     return copy;
190 }
191
192 void appearance_free(Appearance *a)
193 {
194     PlanarSurface *p;
195     if (a->pixmap != None) XFreePixmap(ob_display, a->pixmap);
196     if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
197     if (a->textures)
198         g_free(a->texture);
199     if (a->surface.type == Surface_Planar) {
200         p = &a->surface.data.planar;
201         if (p->primary != NULL) color_free(p->primary);
202         if (p->secondary != NULL) color_free(p->secondary);
203         if (p->border_color != NULL) color_free(p->border_color);
204     }
205     g_free(a);
206 }