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 RrPixel32_to_pixmap(RrAppearance *l, gint x, gint y, gint w, gint h);
  19
  20 void RrPaint(RrAppearance *l, Window win, gint w, gint h)
  21 {
  22     int i, transferred = 0, sw;
  23     RrPixel32 *source, *dest;
  24     Pixmap oldp;
  25     Rect tarea; /* area in which to draw textures */
  26     gboolean resized;
  27
  28     if (w <= 0 || h <= 0) return;
  29
  30     resized = (l->w != w || l->h != h);
  31
  32     if (resized) {
  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     } else
  38         oldp = None;
  39
  40     g_assert(l->pixmap != None);
  41     l->w = w;
  42     l->h = h;
  43
  44     if (l->xftdraw != NULL)
  45         XftDrawDestroy(l->xftdraw);
  46     l->xftdraw = XftDrawCreate(RrDisplay(l->inst), l->pixmap,
  47                                RrVisual(l->inst), RrColormap(l->inst));
  48     g_assert(l->xftdraw != NULL);
  49
  50     g_free(l->surface.RrPixel_data);
  51     l->surface.RrPixel_data = g_new(RrPixel32, w * h);
  52
  53     if (l->surface.grad == RR_SURFACE_PARENTREL) {
  54         g_assert (l->surface.parent);
  55         g_assert (l->surface.parent->w);
  56
  57         sw = l->surface.parent->w;
  58         source = (l->surface.parent->surface.RrPixel_data + l->surface.parentx +
  59                   sw * l->surface.parenty);
  60         dest = l->surface.RrPixel_data;
  61         for (i = 0; i < h; i++, source += sw, dest += w) {
  62             memcpy(dest, source, w * sizeof(RrPixel32));
  63         }
  64     } else if (l->surface.grad == RR_SURFACE_SOLID)
  65         gradient_solid(l, 0, 0, w, h);
  66     else
  67         gradient_render(&l->surface, w, h);
  68
  69     RECT_SET(tarea, 0, 0, w, h);
  70     if (l->surface.grad != RR_SURFACE_PARENTREL) {
  71         if (l->surface.relief != RR_RELIEF_FLAT) {
  72             switch (l->surface.bevel) {
  73             case RR_BEVEL_1:
  74                 tarea.x += 1; tarea.y += 1;
  75                 tarea.width -= 2; tarea.height -= 2;
  76                 break;
  77             case RR_BEVEL_2:
  78                 tarea.x += 2; tarea.y += 2;
  79                 tarea.width -= 4; tarea.height -= 4;
  80                 break;
  81             }
  82         } else if (l->surface.border) {
  83             tarea.x += 1; tarea.y += 1;
  84             tarea.width -= 2; tarea.height -= 2;
  85         }
  86     }
  87
  88     for (i = 0; i < l->textures; i++) {
  89         switch (l->texture[i].type) {
  90         case RR_TEXTURE_NONE:
  91             break;
  92         case RR_TEXTURE_TEXT:
  93             if (!transferred) {
  94                 transferred = 1;
  95                 if (l->surface.grad != RR_SURFACE_SOLID)
  96                     RrPixel32_to_pixmap(l, 0, 0, w, h);
  97             }
  98             if (l->xftdraw == NULL) {
  99                 l->xftdraw = XftDrawCreate(RrDisplay(l->inst), l->pixmap,
 100                                            RrVisual(l->inst),
 101                                            RrColormap(l->inst));
 102             }
 103             RrFontDraw(l->xftdraw, &l->texture[i].data.text, &tarea);
 104         break;
 105         case RR_TEXTURE_MASK:
 106             if (!transferred) {
 107                 transferred = 1;
 108                 if (l->surface.grad != RR_SURFACE_SOLID)
 109                     RrPixel32_to_pixmap(l, 0, 0, w, h);
 110             }
 111             if (l->texture[i].data.mask.color->gc == None)
 112                 color_allocate_gc(l->texture[i].data.mask.color);
 113             RrPixmapMaskDraw(l->pixmap, &l->texture[i].data.mask, &tarea);
 114         break;
 115         case RR_TEXTURE_RGBA:
 116             RrImageDraw(l->surface.RrPixel_data,
 117                         &l->texture[i].data.rgba, &tarea);
 118         break;
 119         }
 120     }
 121
 122     if (!transferred) {
 123         transferred = 1;
 124         if (l->surface.grad != RR_SURFACE_SOLID)
 125             RrPixel32_to_pixmap(l, 0, 0, w, h);
 126     }
 127
 128
 129     XSetWindowBackgroundPixmap(RrDisplay(l->inst), win, l->pixmap);
 130     XClearWindow(RrDisplay(l->inst), win);
 131     if (oldp) XFreePixmap(RrDisplay(l->inst), oldp);
 132 }
 133
 134 RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
 135 {
 136   RrAppearance *out;
 137
 138   out = g_new0(RrAppearance, 1);
 139   out->inst = inst;
 140   out->textures = numtex;
 141   if (numtex) out->texture = g_new0(RrTexture, numtex);
 142
 143   return out;
 144 }
 145
 146 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
 147 {
 148     RrSurface *spo, *spc;
 149     RrAppearance *copy = g_new(RrAppearance, 1);
 150
 151     copy->inst = orig->inst;
 152
 153     spo = &(orig->surface);
 154     spc = &(copy->surface);
 155     spc->grad = spo->grad;
 156     spc->relief = spo->relief;
 157     spc->bevel = spo->bevel;
 158     if (spo->primary != NULL)
 159         spc->primary = RrColorNew(copy->inst,
 160                                   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 = RrColorNew(copy->inst,
 167                                     spo->secondary->r,
 168                                     spo->secondary->g,
 169                                     spo->secondary->b);
 170     else spc->secondary = NULL;
 171
 172     if (spo->border_color != NULL)
 173         spc->border_color = RrColorNew(copy->inst,
 174                                        spo->border_color->r,
 175                                        spo->border_color->g,
 176                                        spo->border_color->b);
 177     else spc->border_color = NULL;
 178
 179     if (spo->bevel_dark != NULL)
 180         spc->bevel_dark = RrColorNew(copy->inst,
 181                                      spo->bevel_dark->r,
 182                                      spo->bevel_dark->g,
 183                                      spo->bevel_dark->b);
 184     else spc->bevel_dark = NULL;
 185
 186     if (spo->bevel_light != NULL)
 187         spc->bevel_light = RrColorNew(copy->inst,
 188                                       spo->bevel_light->r,
 189                                       spo->bevel_light->g,
 190                                       spo->bevel_light->b);
 191     else spc->bevel_light = NULL;
 192
 193     spc->interlaced = spo->interlaced;
 194     spc->border = spo->border;
 195     spc->RrPixel_data = NULL;
 196
 197     copy->textures = orig->textures;
 198     copy->texture = g_memdup(orig->texture,
 199                              orig->textures * sizeof(RrTexture));
 200     copy->pixmap = None;
 201     copy->xftdraw = NULL;
 202     copy->w = copy->h = 0;
 203     return copy;
 204 }
 205
 206 void RrAppearanceFree(RrAppearance *a)
 207 {
 208     if (a) {
 209         RrSurface *p;
 210         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
 211         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
 212         if (a->textures)
 213             g_free(a->texture);
 214         p = &a->surface;
 215         RrColorFree(p->primary);
 216         RrColorFree(p->secondary);
 217         RrColorFree(p->border_color);
 218         RrColorFree(p->bevel_dark);
 219         RrColorFree(p->bevel_light);
 220         g_free(p->RrPixel_data);
 221
 222         g_free(a);
 223     }
 224 }
 225
 226
 227 static void RrPixel32_to_pixmap(RrAppearance *l, gint x, gint y, gint w, gint h)
 228 {
 229     RrPixel32 *in, *scratch;
 230     Pixmap out;
 231     XImage *im = NULL;
 232     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
 233                       ZPixmap, 0, NULL, w, h, 32, 0);
 234     g_assert(im != NULL);
 235
 236     in = l->surface.RrPixel_data;
 237     out = l->pixmap;
 238
 239     im->byte_order = RrEndian;
 240 /* this malloc is a complete waste of time on normal 32bpp
 241    as reduce_depth just sets im->data = data and returns
 242 */
 243     scratch = g_new(RrPixel32, im->width * im->height);
 244     im->data = (char*) scratch;
 245     reduce_depth(l->inst, in, im);
 246     XPutImage(RrDisplay(l->inst), out,
 247               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
 248               im, 0, 0, x, y, w, h);
 249     im->data = NULL;
 250     XDestroyImage(im);
 251     g_free(scratch);
 252 }
 253
 254 void RrMinsize(RrAppearance *l, gint *w, gint *h)
 255 {
 256     gint i;
 257     gint m;
 258     *w = *h = 0;
 259
 260     for (i = 0; i < l->textures; ++i) {
 261         switch (l->texture[i].type) {
 262         case RR_TEXTURE_NONE:
 263             break;
 264         case RR_TEXTURE_MASK:
 265             *w = MAX(*w, l->texture[i].data.mask.mask->width);
 266             *h = MAX(*h, l->texture[i].data.mask.mask->height);
 267             break;
 268         case RR_TEXTURE_TEXT:
 269             m = RrFontMeasureString(l->texture[i].data.text.font,
 270                                     l->texture[i].data.text.string,
 271                                     l->texture[i].data.text.shadow,
 272                                     l->texture[i].data.text.offset);
 273             *w = MAX(*w, m);
 274             m = RrFontHeight(l->texture[i].data.text.font,
 275                              l->texture[i].data.text.shadow,
 276                              l->texture[i].data.text.offset);
 277             *h += MAX(*h, m);
 278             break;
 279         case RR_TEXTURE_RGBA:
 280             *w += MAX(*w, l->texture[i].data.rgba.width);
 281             *h += MAX(*h, l->texture[i].data.rgba.height);
 282             break;
 283         }
 284     }
 285
 286     if (l->surface.relief != RR_RELIEF_FLAT) {
 287         switch (l->surface.bevel) {
 288         case RR_BEVEL_1:
 289             *w += 2;
 290             *h += 2;
 291             break;
 292         case RR_BEVEL_2:
 293             *w += 4;
 294             *h += 4;
 295             break;
 296         }
 297     } else if (l->surface.border) {
 298         *w += 2;
 299         *h += 2;
 300     }
 301
 302     if (*w < 1) *w = 1;
 303     if (*h < 1) *h = 1;
 304 }
 305
 306 gboolean RrPixmapToRGBA(const RrInstance *inst,
 307                         Pixmap pmap, Pixmap mask,
 308                         gint *w, gint *h, RrPixel32 **data)
 309 {
 310     Window xr;
 311     gint xx, xy;
 312     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
 313     XImage *xi, *xm = NULL;
 314
 315     if (!XGetGeometry(RrDisplay(inst),
 316                       pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
 317         return FALSE;
 318     if (mask) {
 319         if (!XGetGeometry(RrDisplay(inst), mask,
 320                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
 321             return FALSE;
 322         if (pw != mw || ph != mh || xd != 1)
 323             return FALSE;
 324     }
 325
 326     xi = XGetImage(RrDisplay(inst), pmap,
 327                    0, 0, pw, ph, 0xffffffff, ZPixmap);
 328     if (!xi)
 329         return FALSE;
 330
 331     if (mask) {
 332         xm = XGetImage(RrDisplay(inst), mask,
 333                        0, 0, mw, mh, 0xffffffff, ZPixmap);
 334         if (!xm)
 335             return FALSE;
 336     }
 337
 338     *data = g_new(RrPixel32, pw * ph);
 339     increase_depth(inst, *data, xi);
 340
 341     if (mask) {
 342         /* apply transparency from the mask */
 343         di = 0;
 344         for (i = 0, y = 0; y < ph; ++y) {
 345             for (x = 0; x < pw; ++x, ++i) {
 346                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
 347                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
 348             }
 349             di += xm->bytes_per_line;
 350         }
 351     }
 352
 353     *w = pw;
 354     *h = ph;
 355
 356     return TRUE;
 357 }