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)
  91 {
  92     int i, transferred = 0, sw;
  93     pixel32 *source, *dest;
  94     Pixmap oldp;
  95     int x = l->area.x;
  96     int y = l->area.y;
  97     int w = l->area.width;
  98     int h = l->area.height;
  99
 100     if (w <= 0 || h <= 0 || x+w <= 0 || y+h <= 0) return;
 101
 102     g_assert(l->surface.type == Surface_Planar);
 103
 104     oldp = l->pixmap; /* save to free after changing the visible pixmap */
 105     l->pixmap = XCreatePixmap(ob_display, ob_root, x+w, y+h, render_depth);
 106     g_assert(l->pixmap != None);
 107
 108     if (l->xftdraw != NULL)
 109         XftDrawDestroy(l->xftdraw);
 110     l->xftdraw = XftDrawCreate(ob_display, l->pixmap, render_visual,
 111                                render_colormap);
 112     g_assert(l->xftdraw != NULL);
 113
 114     g_free(l->surface.data.planar.pixel_data);
 115     l->surface.data.planar.pixel_data = g_new(pixel32, w * h);
 116
 117
 118     if (l->surface.data.planar.grad == Background_ParentRelative) {
 119         sw = l->surface.data.planar.parent->area.width;
 120         source = l->surface.data.planar.parent->surface.data.planar.pixel_data
 121             + l->surface.data.planar.parentx
 122             + sw * l->surface.data.planar.parenty;
 123         dest = l->surface.data.planar.pixel_data;
 124         for (i = 0; i < h; i++, source += sw, dest += w) {
 125             memcpy(dest, source, w * sizeof(pixel32));
 126         }
 127     }
 128     else if (l->surface.data.planar.grad == Background_Solid)
 129         gradient_solid(l, x, y, w, h);
 130     else gradient_render(&l->surface, w, h);
 131
 132     for (i = 0; i < l->textures; i++) {
 133         switch (l->texture[i].type) {
 134         case Text:
 135             if (!transferred) {
 136                 transferred = 1;
 137                 if (l->surface.data.planar.grad != Background_Solid)
 138                     pixel32_to_pixmap(l->surface.data.planar.pixel_data,
 139                                       l->pixmap,x,y,w,h);
 140             }
 141             if (l->xftdraw == NULL) {
 142                 l->xftdraw = XftDrawCreate(ob_display, l->pixmap,
 143                                         render_visual, render_colormap);
 144             }
 145             font_draw(l->xftdraw, &l->texture[i].data.text,
 146                       &l->texture[i].position);
 147         break;
 148         case Bitmask:
 149             if (!transferred) {
 150                 transferred = 1;
 151                 if (l->surface.data.planar.grad != Background_Solid)
 152                     pixel32_to_pixmap(l->surface.data.planar.pixel_data,
 153                                       l->pixmap,x,y,w,h);
 154             }
 155             if (l->texture[i].data.mask.color->gc == None)
 156                 color_allocate_gc(l->texture[i].data.mask.color);
 157             mask_draw(l->pixmap, &l->texture[i].data.mask,
 158                       &l->texture[i].position);
 159         break;
 160         case RGBA:
 161             image_draw(l->surface.data.planar.pixel_data,
 162                        &l->texture[i].data.rgba,
 163                        &l->texture[i].position);
 164         break;
 165         }
 166     }
 167
 168     if (!transferred) {
 169         transferred = 1;
 170         if (l->surface.data.planar.grad != Background_Solid)
 171             pixel32_to_pixmap(l->surface.data.planar.pixel_data, l->pixmap
 172                               ,x,y,w,h);
 173     }
 174
 175
 176     XSetWindowBackgroundPixmap(ob_display, win, l->pixmap);
 177     XClearWindow(ob_display, win);
 178     if (oldp != None) XFreePixmap(ob_display, oldp);
 179 }
 180
 181 /*
 182 void gl_paint(Window win, Appearance *l)
 183 {
 184     glXMakeCurrent(ob_display, win, gl_context);
 185 }
 186 */
 187
 188 void render_shutdown(void)
 189 {
 190 }
 191
 192 Appearance *appearance_new(SurfaceType type, int numtex)
 193 {
 194   PlanarSurface *p;
 195   Appearance *out;
 196
 197   out = g_new(Appearance, 1);
 198   out->surface.type = type;
 199   out->textures = numtex;
 200   out->xftdraw = NULL;
 201   if (numtex) out->texture = g_new0(Texture, numtex);
 202   else out->texture = NULL;
 203   out->pixmap = None;
 204
 205   switch (type) {
 206   case Surface_Planar:
 207     p = &out->surface.data.planar;
 208     p->primary = NULL;
 209     p->secondary = NULL;
 210     p->border_color = NULL;
 211     p->pixel_data = NULL;
 212     break;
 213   }
 214   return out;
 215 }
 216
 217 Appearance *appearance_copy(Appearance *orig)
 218 {
 219     PlanarSurface *spo, *spc;
 220     Appearance *copy = g_new(Appearance, 1);
 221     copy->surface.type = orig->surface.type;
 222     switch (orig->surface.type) {
 223     case Surface_Planar:
 224         spo = &(orig->surface.data.planar);
 225         spc = &(copy->surface.data.planar);
 226         spc->grad = spo->grad;
 227         spc->relief = spo->relief;
 228         spc->bevel = spo->bevel;
 229         if (spo->primary != NULL)
 230             spc->primary = color_new(spo->primary->r,
 231                                      spo->primary->g,
 232                                      spo->primary->b);
 233         else spc->primary = NULL;
 234
 235         if (spo->secondary != NULL)
 236             spc->secondary = color_new(spo->secondary->r,
 237                                        spo->secondary->g,
 238                                        spo->secondary->b);
 239         else spc->secondary = NULL;
 240
 241         if (spo->border_color != NULL)
 242             spc->border_color = color_new(spo->border_color->r,
 243                                           spo->border_color->g,
 244                                           spo->border_color->b);
 245         else spc->border_color = NULL;
 246
 247         spc->interlaced = spo->interlaced;
 248         spc->border = spo->border;
 249         spc->pixel_data = NULL;
 250     break;
 251     }
 252     copy->textures = orig->textures;
 253     copy->texture = g_memdup(orig->texture, orig->textures * sizeof(Texture));
 254     copy->pixmap = None;
 255     copy->xftdraw = NULL;
 256     return copy;
 257 }
 258
 259 void appearance_free(Appearance *a)
 260 {
 261     PlanarSurface *p;
 262     if (a->pixmap != None) XFreePixmap(ob_display, a->pixmap);
 263     if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
 264     if (a->textures)
 265         g_free(a->texture);
 266     if (a->surface.type == Surface_Planar) {
 267         p = &a->surface.data.planar;
 268         if (p->primary != NULL) color_free(p->primary);
 269         if (p->secondary != NULL) color_free(p->secondary);
 270         if (p->border_color != NULL) color_free(p->border_color);
 271         if (p->pixel_data != NULL) g_free(p->pixel_data);
 272     }
 273     g_free(a);
 274 }
 275
 276
 277 void pixel32_to_pixmap(pixel32 *in, Pixmap out, int x, int y, int w, int h)
 278 {
 279     XImage *im = NULL;
 280     im = XCreateImage(ob_display, render_visual, render_depth,
 281                       ZPixmap, 0, NULL, w, h, 32, 0);
 282     g_assert(im != NULL);
 283     im->byte_order = endian;
 284     im->data = (char *)in;
 285     reduce_depth((pixel32*)im->data, im);
 286     XPutImage(ob_display, out, DefaultGC(ob_display, ob_screen),
 287               im, 0, 0, x, y, w, h);
 288     im->data = NULL;
 289     XDestroyImage(im);
 290 }