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