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
  65         RrRender(l, w, h);
  66
  67     RECT_SET(tarea, 0, 0, w, h);
  68     if (l->surface.grad != RR_SURFACE_PARENTREL) {
  69         if (l->surface.relief != RR_RELIEF_FLAT) {
  70             switch (l->surface.bevel) {
  71             case RR_BEVEL_1:
  72                 tarea.x += 1; tarea.y += 1;
  73                 tarea.width -= 2; tarea.height -= 2;
  74                 break;
  75             case RR_BEVEL_2:
  76                 tarea.x += 2; tarea.y += 2;
  77                 tarea.width -= 4; tarea.height -= 4;
  78                 break;
  79             }
  80         } else if (l->surface.border) {
  81             tarea.x += 1; tarea.y += 1;
  82             tarea.width -= 2; tarea.height -= 2;
  83         }
  84     }
  85
  86     for (i = 0; i < l->textures; i++) {
  87         switch (l->texture[i].type) {
  88         case RR_TEXTURE_NONE:
  89             break;
  90         case RR_TEXTURE_TEXT:
  91             if (!transferred) {
  92                 transferred = 1;
  93                 if (l->surface.grad != RR_SURFACE_SOLID)
  94                     RrPixel32_to_pixmap(l, 0, 0, w, h);
  95             }
  96             if (l->xftdraw == NULL) {
  97                 l->xftdraw = XftDrawCreate(RrDisplay(l->inst), l->pixmap,
  98                                            RrVisual(l->inst),
  99                                            RrColormap(l->inst));
 100             }
 101             RrFontDraw(l->xftdraw, &l->texture[i].data.text, &tarea);
 102         break;
 103         case RR_TEXTURE_MASK:
 104             if (!transferred) {
 105                 transferred = 1;
 106                 if (l->surface.grad != RR_SURFACE_SOLID)
 107                     RrPixel32_to_pixmap(l, 0, 0, w, h);
 108             }
 109             if (l->texture[i].data.mask.color->gc == None)
 110                 RrColorAllocateGC(l->texture[i].data.mask.color);
 111             RrPixmapMaskDraw(l->pixmap, &l->texture[i].data.mask, &tarea);
 112         break;
 113         case RR_TEXTURE_RGBA:
 114             RrImageDraw(l->surface.RrPixel_data,
 115                         &l->texture[i].data.rgba, &tarea);
 116         break;
 117         }
 118     }
 119
 120     if (!transferred) {
 121         transferred = 1;
 122         if (l->surface.grad != RR_SURFACE_SOLID)
 123             RrPixel32_to_pixmap(l, 0, 0, w, h);
 124     }
 125
 126
 127     XSetWindowBackgroundPixmap(RrDisplay(l->inst), win, l->pixmap);
 128     XClearWindow(RrDisplay(l->inst), win);
 129     if (oldp) XFreePixmap(RrDisplay(l->inst), oldp);
 130 }
 131
 132 RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
 133 {
 134   RrAppearance *out;
 135
 136   out = g_new0(RrAppearance, 1);
 137   out->inst = inst;
 138   out->textures = numtex;
 139   if (numtex) out->texture = g_new0(RrTexture, numtex);
 140
 141   return out;
 142 }
 143
 144 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
 145 {
 146     RrSurface *spo, *spc;
 147     RrAppearance *copy = g_new(RrAppearance, 1);
 148
 149     copy->inst = orig->inst;
 150
 151     spo = &(orig->surface);
 152     spc = &(copy->surface);
 153     spc->grad = spo->grad;
 154     spc->relief = spo->relief;
 155     spc->bevel = spo->bevel;
 156     if (spo->primary != NULL)
 157         spc->primary = RrColorNew(copy->inst,
 158                                   spo->primary->r,
 159                                   spo->primary->g,
 160                                   spo->primary->b);
 161     else spc->primary = NULL;
 162
 163     if (spo->secondary != NULL)
 164         spc->secondary = RrColorNew(copy->inst,
 165                                     spo->secondary->r,
 166                                     spo->secondary->g,
 167                                     spo->secondary->b);
 168     else spc->secondary = NULL;
 169
 170     if (spo->border_color != NULL)
 171         spc->border_color = RrColorNew(copy->inst,
 172                                        spo->border_color->r,
 173                                        spo->border_color->g,
 174                                        spo->border_color->b);
 175     else spc->border_color = NULL;
 176
 177     if (spo->bevel_dark != NULL)
 178         spc->bevel_dark = RrColorNew(copy->inst,
 179                                      spo->bevel_dark->r,
 180                                      spo->bevel_dark->g,
 181                                      spo->bevel_dark->b);
 182     else spc->bevel_dark = NULL;
 183
 184     if (spo->bevel_light != NULL)
 185         spc->bevel_light = RrColorNew(copy->inst,
 186                                       spo->bevel_light->r,
 187                                       spo->bevel_light->g,
 188                                       spo->bevel_light->b);
 189     else spc->bevel_light = NULL;
 190
 191     spc->interlaced = spo->interlaced;
 192     spc->border = spo->border;
 193     spc->RrPixel_data = NULL;
 194
 195     copy->textures = orig->textures;
 196     copy->texture = g_memdup(orig->texture,
 197                              orig->textures * sizeof(RrTexture));
 198     copy->pixmap = None;
 199     copy->xftdraw = NULL;
 200     copy->w = copy->h = 0;
 201     return copy;
 202 }
 203
 204 void RrAppearanceFree(RrAppearance *a)
 205 {
 206     if (a) {
 207         RrSurface *p;
 208         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
 209         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
 210         if (a->textures)
 211             g_free(a->texture);
 212         p = &a->surface;
 213         RrColorFree(p->primary);
 214         RrColorFree(p->secondary);
 215         RrColorFree(p->border_color);
 216         RrColorFree(p->bevel_dark);
 217         RrColorFree(p->bevel_light);
 218         g_free(p->RrPixel_data);
 219
 220         g_free(a);
 221     }
 222 }
 223
 224
 225 static void RrPixel32_to_pixmap(RrAppearance *l, gint x, gint y, gint w, gint h)
 226 {
 227     RrPixel32 *in, *scratch;
 228     Pixmap out;
 229     XImage *im = NULL;
 230     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
 231                       ZPixmap, 0, NULL, w, h, 32, 0);
 232     g_assert(im != NULL);
 233
 234     in = l->surface.RrPixel_data;
 235     out = l->pixmap;
 236
 237     im->byte_order = RrEndian;
 238 /* this malloc is a complete waste of time on normal 32bpp
 239    as reduce_depth just sets im->data = data and returns
 240 */
 241     scratch = g_new(RrPixel32, im->width * im->height);
 242     im->data = (char*) scratch;
 243     RrReduceDepth(l->inst, in, im);
 244     XPutImage(RrDisplay(l->inst), out,
 245               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
 246               im, 0, 0, x, y, w, h);
 247     im->data = NULL;
 248     XDestroyImage(im);
 249     g_free(scratch);
 250 }
 251
 252 void RrMinsize(RrAppearance *l, gint *w, gint *h)
 253 {
 254     gint i;
 255     gint m;
 256     *w = *h = 0;
 257
 258     for (i = 0; i < l->textures; ++i) {
 259         switch (l->texture[i].type) {
 260         case RR_TEXTURE_NONE:
 261             break;
 262         case RR_TEXTURE_MASK:
 263             *w = MAX(*w, l->texture[i].data.mask.mask->width);
 264             *h = MAX(*h, l->texture[i].data.mask.mask->height);
 265             break;
 266         case RR_TEXTURE_TEXT:
 267             m = RrFontMeasureString(l->texture[i].data.text.font,
 268                                     l->texture[i].data.text.string,
 269                                     l->texture[i].data.text.shadow,
 270                                     l->texture[i].data.text.offset);
 271             *w = MAX(*w, m);
 272             m = RrFontHeight(l->texture[i].data.text.font,
 273                              l->texture[i].data.text.shadow,
 274                              l->texture[i].data.text.offset);
 275             *h += MAX(*h, m);
 276             break;
 277         case RR_TEXTURE_RGBA:
 278             *w += MAX(*w, l->texture[i].data.rgba.width);
 279             *h += MAX(*h, l->texture[i].data.rgba.height);
 280             break;
 281         }
 282     }
 283
 284     if (l->surface.relief != RR_RELIEF_FLAT) {
 285         switch (l->surface.bevel) {
 286         case RR_BEVEL_1:
 287             *w += 2;
 288             *h += 2;
 289             break;
 290         case RR_BEVEL_2:
 291             *w += 4;
 292             *h += 4;
 293             break;
 294         }
 295     } else if (l->surface.border) {
 296         *w += 2;
 297         *h += 2;
 298     }
 299
 300     if (*w < 1) *w = 1;
 301     if (*h < 1) *h = 1;
 302 }
 303
 304 gboolean RrPixmapToRGBA(const RrInstance *inst,
 305                         Pixmap pmap, Pixmap mask,
 306                         gint *w, gint *h, RrPixel32 **data)
 307 {
 308     Window xr;
 309     gint xx, xy;
 310     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
 311     XImage *xi, *xm = NULL;
 312
 313     if (!XGetGeometry(RrDisplay(inst),
 314                       pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
 315         return FALSE;
 316     if (mask) {
 317         if (!XGetGeometry(RrDisplay(inst), mask,
 318                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
 319             return FALSE;
 320         if (pw != mw || ph != mh || xd != 1)
 321             return FALSE;
 322     }
 323
 324     xi = XGetImage(RrDisplay(inst), pmap,
 325                    0, 0, pw, ph, 0xffffffff, ZPixmap);
 326     if (!xi)
 327         return FALSE;
 328
 329     if (mask) {
 330         xm = XGetImage(RrDisplay(inst), mask,
 331                        0, 0, mw, mh, 0xffffffff, ZPixmap);
 332         if (!xm)
 333             return FALSE;
 334     }
 335
 336     *data = g_new(RrPixel32, pw * ph);
 337     RrIncreaseDepth(inst, *data, xi);
 338
 339     if (mask) {
 340         /* apply transparency from the mask */
 341         di = 0;
 342         for (i = 0, y = 0; y < ph; ++y) {
 343             for (x = 0; x < pw; ++x, ++i) {
 344                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
 345                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
 346             }
 347             di += xm->bytes_per_line;
 348         }
 349     }
 350
 351     *w = pw;
 352     *h = ph;
 353
 354     return TRUE;
 355 }