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