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 *a, 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 = (a->w != w || a->h != h);
  32
  33     oldp = a->pixmap; /* save to free after changing the visible pixmap */
  34     a->pixmap = XCreatePixmap(RrDisplay(a->inst),
  35                               RrRootWindow(a->inst),
  36                               w, h, RrDepth(a->inst));
  37
  38     g_assert(a->pixmap != None);
  39     a->w = w;
  40     a->h = h;
  41
  42     if (a->xftdraw != NULL)
  43         XftDrawDestroy(a->xftdraw);
  44     a->xftdraw = XftDrawCreate(RrDisplay(a->inst), a->pixmap,
  45                                RrVisual(a->inst), RrColormap(a->inst));
  46     g_assert(a->xftdraw != NULL);
  47
  48     g_free(a->surface.pixel_data);
  49     a->surface.pixel_data = g_new(RrPixel32, w * h);
  50
  51     if (a->surface.grad == RR_SURFACE_PARENTREL) {
  52         g_assert (a->surface.parent);
  53         g_assert (a->surface.parent->w);
  54
  55         sw = a->surface.parent->w;
  56         source = (a->surface.parent->surface.pixel_data +
  57                   a->surface.parentx + sw * a->surface.parenty);
  58         dest = a->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(a, w, h);
  64
  65     {
  66         gint l, t, r, b;
  67         RrMargins(a, &l, &t, &r, &b);
  68         RECT_SET(tarea, l, t, w - l - r, h - t - b);
  69     }
  70
  71     for (i = 0; i < a->textures; i++) {
  72         switch (a->texture[i].type) {
  73         case RR_TEXTURE_NONE:
  74             break;
  75         case RR_TEXTURE_TEXT:
  76             if (!transferred) {
  77                 transferred = 1;
  78                 if (a->surface.grad != RR_SURFACE_SOLID)
  79                     pixel_data_to_pixmap(a, 0, 0, w, h);
  80             }
  81             if (a->xftdraw == NULL) {
  82                 a->xftdraw = XftDrawCreate(RrDisplay(a->inst), a->pixmap,
  83                                            RrVisual(a->inst),
  84                                            RrColormap(a->inst));
  85             }
  86             RrFontDraw(a->xftdraw, &a->texture[i].data.text, &tarea);
  87             break;
  88         case RR_TEXTURE_LINE_ART:
  89             if (!transferred) {
  90                 transferred = 1;
  91                 if (a->surface.grad != RR_SURFACE_SOLID)
  92                     pixel_data_to_pixmap(a, 0, 0, w, h);
  93             }
  94             XDrawLine(RrDisplay(a->inst), a->pixmap,
  95                       RrColorGC(a->texture[i].data.lineart.color),
  96                       a->texture[i].data.lineart.x1,
  97                       a->texture[i].data.lineart.y1,
  98                       a->texture[i].data.lineart.x2,
  99                       a->texture[i].data.lineart.y2);
 100             break;
 101         case RR_TEXTURE_MASK:
 102             if (!transferred) {
 103                 transferred = 1;
 104                 if (a->surface.grad != RR_SURFACE_SOLID)
 105                     pixel_data_to_pixmap(a, 0, 0, w, h);
 106             }
 107             RrPixmapMaskDraw(a->pixmap, &a->texture[i].data.mask, &tarea);
 108             break;
 109         case RR_TEXTURE_RGBA:
 110             g_assert(!transferred);
 111             RrImageDraw(a->surface.pixel_data,
 112                         &a->texture[i].data.rgba, &tarea);
 113         break;
 114         }
 115     }
 116
 117     if (!transferred) {
 118         transferred = 1;
 119         if (a->surface.grad != RR_SURFACE_SOLID)
 120             pixel_data_to_pixmap(a, 0, 0, w, h);
 121     }
 122
 123     XSetWindowBackgroundPixmap(RrDisplay(a->inst), win, a->pixmap);
 124     XClearWindow(RrDisplay(a->inst), win);
 125     if (oldp) XFreePixmap(RrDisplay(a->inst), oldp);
 126 }
 127
 128 RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
 129 {
 130   RrAppearance *out;
 131
 132   out = g_new0(RrAppearance, 1);
 133   out->inst = inst;
 134   out->textures = numtex;
 135   if (numtex) out->texture = g_new0(RrTexture, numtex);
 136
 137   return out;
 138 }
 139
 140 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
 141 {
 142     RrSurface *spo, *spc;
 143     RrAppearance *copy = g_new(RrAppearance, 1);
 144     gint i;
 145
 146     copy->inst = orig->inst;
 147
 148     spo = &(orig->surface);
 149     spc = &(copy->surface);
 150     spc->grad = spo->grad;
 151     spc->relief = spo->relief;
 152     spc->bevel = spo->bevel;
 153     if (spo->primary != NULL)
 154         spc->primary = RrColorNew(copy->inst,
 155                                   spo->primary->r,
 156                                   spo->primary->g,
 157                                   spo->primary->b);
 158     else spc->primary = NULL;
 159
 160     if (spo->secondary != NULL)
 161         spc->secondary = RrColorNew(copy->inst,
 162                                     spo->secondary->r,
 163                                     spo->secondary->g,
 164                                     spo->secondary->b);
 165     else spc->secondary = NULL;
 166
 167     if (spo->border_color != NULL)
 168         spc->border_color = RrColorNew(copy->inst,
 169                                        spo->border_color->r,
 170                                        spo->border_color->g,
 171                                        spo->border_color->b);
 172     else spc->border_color = NULL;
 173
 174     if (spo->interlace_color != NULL)
 175         spc->interlace_color = RrColorNew(copy->inst,
 176                                        spo->interlace_color->r,
 177                                        spo->interlace_color->g,
 178                                        spo->interlace_color->b);
 179     else spc->interlace_color = NULL;
 180
 181     if (spo->bevel_dark != NULL)
 182         spc->bevel_dark = RrColorNew(copy->inst,
 183                                      spo->bevel_dark->r,
 184                                      spo->bevel_dark->g,
 185                                      spo->bevel_dark->b);
 186     else spc->bevel_dark = NULL;
 187
 188     if (spo->bevel_light != NULL)
 189         spc->bevel_light = RrColorNew(copy->inst,
 190                                       spo->bevel_light->r,
 191                                       spo->bevel_light->g,
 192                                       spo->bevel_light->b);
 193     else spc->bevel_light = NULL;
 194
 195     spc->interlaced = spo->interlaced;
 196     spc->border = spo->border;
 197     spc->parent = NULL;
 198     spc->parentx = spc->parenty = 0;
 199     spc->pixel_data = NULL;
 200
 201     copy->textures = orig->textures;
 202     copy->texture = g_memdup(orig->texture,
 203                              orig->textures * sizeof(RrTexture));
 204     for (i = 0; i < copy->textures; ++i)
 205         if (copy->texture[i].type == RR_TEXTURE_RGBA) {
 206             g_free(copy->texture[i].data.rgba.cache);
 207             copy->texture[i].data.rgba.cache = NULL;
 208         }
 209     copy->pixmap = None;
 210     copy->xftdraw = NULL;
 211     copy->w = copy->h = 0;
 212     return copy;
 213 }
 214
 215 void RrAppearanceFree(RrAppearance *a)
 216 {
 217     gint i;
 218
 219     if (a) {
 220         RrSurface *p;
 221         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
 222         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
 223         for (i = 0; i < a->textures; ++i)
 224             if (a->texture[i].type == RR_TEXTURE_RGBA) {
 225                 g_free(a->texture[i].data.rgba.cache);
 226                 a->texture[i].data.rgba.cache = NULL;
 227             }
 228         if (a->textures)
 229             g_free(a->texture);
 230         p = &a->surface;
 231         RrColorFree(p->primary);
 232         RrColorFree(p->secondary);
 233         RrColorFree(p->border_color);
 234         RrColorFree(p->interlace_color);
 235         RrColorFree(p->bevel_dark);
 236         RrColorFree(p->bevel_light);
 237         g_free(p->pixel_data);
 238
 239         g_free(a);
 240     }
 241 }
 242
 243
 244 static void pixel_data_to_pixmap(RrAppearance *l,
 245                                  gint x, gint y, gint w, gint h)
 246 {
 247     RrPixel32 *in, *scratch;
 248     Pixmap out;
 249     XImage *im = NULL;
 250     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
 251                       ZPixmap, 0, NULL, w, h, 32, 0);
 252     g_assert(im != NULL);
 253
 254     in = l->surface.pixel_data;
 255     out = l->pixmap;
 256
 257 /* this malloc is a complete waste of time on normal 32bpp
 258    as reduce_depth just sets im->data = data and returns
 259 */
 260     scratch = g_new(RrPixel32, im->width * im->height);
 261     im->data = (char*) scratch;
 262     RrReduceDepth(l->inst, in, im);
 263     XPutImage(RrDisplay(l->inst), out,
 264               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
 265               im, 0, 0, x, y, w, h);
 266     im->data = NULL;
 267     XDestroyImage(im);
 268     g_free(scratch);
 269 }
 270
 271 void RrMargins (RrAppearance *a, gint *l, gint *t, gint *r, gint *b)
 272 {
 273     *l = *t = *r = *b = 0;
 274
 275     if (a->surface.grad != RR_SURFACE_PARENTREL) {
 276         if (a->surface.relief != RR_RELIEF_FLAT) {
 277             switch (a->surface.bevel) {
 278             case RR_BEVEL_1:
 279                 *l = *t = *r = *b = 1;
 280                 break;
 281             case RR_BEVEL_2:
 282                 *l = *t = *r = *b = 2;
 283                 break;
 284             }
 285         } else if (a->surface.border) {
 286             *l = *t = *r = *b = 1;
 287         }
 288     }
 289 }
 290
 291 void RrMinsize(RrAppearance *a, gint *w, gint *h)
 292 {
 293     gint i;
 294     gint m;
 295     gint l, t, r, b;
 296     *w = *h = 0;
 297
 298     for (i = 0; i < a->textures; ++i) {
 299         switch (a->texture[i].type) {
 300         case RR_TEXTURE_NONE:
 301             break;
 302         case RR_TEXTURE_MASK:
 303             *w = MAX(*w, a->texture[i].data.mask.mask->width);
 304             *h = MAX(*h, a->texture[i].data.mask.mask->height);
 305             break;
 306         case RR_TEXTURE_TEXT:
 307             m = RrFontMeasureString(a->texture[i].data.text.font,
 308                                     a->texture[i].data.text.string);
 309             *w = MAX(*w, m);
 310             m = RrFontHeight(a->texture[i].data.text.font);
 311             *h += MAX(*h, m);
 312             break;
 313         case RR_TEXTURE_RGBA:
 314             *w += MAX(*w, a->texture[i].data.rgba.width);
 315             *h += MAX(*h, a->texture[i].data.rgba.height);
 316             break;
 317         case RR_TEXTURE_LINE_ART:
 318             *w += MAX(*w, MAX(a->texture[i].data.lineart.x1,
 319                               a->texture[i].data.lineart.x2));
 320             *h += MAX(*h, MAX(a->texture[i].data.lineart.y1,
 321                               a->texture[i].data.lineart.y2));
 322             break;
 323         }
 324     }
 325
 326     RrMargins(a, &l, &t, &r, &b);
 327
 328     *w += l + r;
 329     *h += t + b;
 330
 331     if (*w < 1) *w = 1;
 332     if (*h < 1) *h = 1;
 333 }
 334
 335 gboolean RrPixmapToRGBA(const RrInstance *inst,
 336                         Pixmap pmap, Pixmap mask,
 337                         gint *w, gint *h, RrPixel32 **data)
 338 {
 339     Window xr;
 340     gint xx, xy;
 341     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
 342     XImage *xi, *xm = NULL;
 343
 344     if (!XGetGeometry(RrDisplay(inst),
 345                       pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
 346         return FALSE;
 347     if (mask) {
 348         if (!XGetGeometry(RrDisplay(inst), mask,
 349                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
 350             return FALSE;
 351         if (pw != mw || ph != mh || xd != 1)
 352             return FALSE;
 353     }
 354
 355     xi = XGetImage(RrDisplay(inst), pmap,
 356                    0, 0, pw, ph, 0xffffffff, ZPixmap);
 357     if (!xi)
 358         return FALSE;
 359
 360     if (mask) {
 361         xm = XGetImage(RrDisplay(inst), mask,
 362                        0, 0, mw, mh, 0xffffffff, ZPixmap);
 363         if (!xm)
 364             return FALSE;
 365     }
 366
 367     *data = g_new(RrPixel32, pw * ph);
 368     RrIncreaseDepth(inst, *data, xi);
 369
 370     if (mask) {
 371         /* apply transparency from the mask */
 372         di = 0;
 373         for (i = 0, y = 0; y < ph; ++y) {
 374             for (x = 0; x < pw; ++x, ++i) {
 375                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
 376                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
 377             }
 378             di += xm->bytes_per_line;
 379         }
 380     }
 381
 382     *w = pw;
 383     *h = ph;
 384
 385     return TRUE;
 386 }