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_MASK:
 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             if (l->texture[i].data.mask.color->gc == None)
 108                 RrColorAllocateGC(l->texture[i].data.mask.color);
 109             RrPixmapMaskDraw(l->pixmap, &l->texture[i].data.mask, &tarea);
 110         break;
 111         case RR_TEXTURE_RGBA:
 112             RrImageDraw(l->surface.pixel_data,
 113                         &l->texture[i].data.rgba, &tarea);
 114         break;
 115         }
 116     }
 117
 118     if (!transferred) {
 119         transferred = 1;
 120         if (l->surface.grad != RR_SURFACE_SOLID)
 121             pixel_data_to_pixmap(l, 0, 0, w, h);
 122     }
 123
 124
 125     XSetWindowBackgroundPixmap(RrDisplay(l->inst), win, l->pixmap);
 126     XClearWindow(RrDisplay(l->inst), win);
 127     if (oldp) XFreePixmap(RrDisplay(l->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
 147     copy->inst = orig->inst;
 148
 149     spo = &(orig->surface);
 150     spc = &(copy->surface);
 151     spc->grad = spo->grad;
 152     spc->relief = spo->relief;
 153     spc->bevel = spo->bevel;
 154     if (spo->primary != NULL)
 155         spc->primary = RrColorNew(copy->inst,
 156                                   spo->primary->r,
 157                                   spo->primary->g,
 158                                   spo->primary->b);
 159     else spc->primary = NULL;
 160
 161     if (spo->secondary != NULL)
 162         spc->secondary = RrColorNew(copy->inst,
 163                                     spo->secondary->r,
 164                                     spo->secondary->g,
 165                                     spo->secondary->b);
 166     else spc->secondary = NULL;
 167
 168     if (spo->border_color != NULL)
 169         spc->border_color = RrColorNew(copy->inst,
 170                                        spo->border_color->r,
 171                                        spo->border_color->g,
 172                                        spo->border_color->b);
 173     else spc->border_color = NULL;
 174
 175     if (spo->bevel_dark != NULL)
 176         spc->bevel_dark = RrColorNew(copy->inst,
 177                                      spo->bevel_dark->r,
 178                                      spo->bevel_dark->g,
 179                                      spo->bevel_dark->b);
 180     else spc->bevel_dark = NULL;
 181
 182     if (spo->bevel_light != NULL)
 183         spc->bevel_light = RrColorNew(copy->inst,
 184                                       spo->bevel_light->r,
 185                                       spo->bevel_light->g,
 186                                       spo->bevel_light->b);
 187     else spc->bevel_light = NULL;
 188
 189     spc->interlaced = spo->interlaced;
 190     spc->border = spo->border;
 191     spc->parent = NULL;
 192     spc->parentx = spc->parenty = 0;
 193     spc->pixel_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->pixel_data);
 219
 220         g_free(a);
 221     }
 222 }
 223
 224
 225 static void pixel_data_to_pixmap(RrAppearance *l,
 226                                  gint x, gint y, gint w, gint h)
 227 {
 228     RrPixel32 *in, *scratch;
 229     Pixmap out;
 230     XImage *im = NULL;
 231     im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
 232                       ZPixmap, 0, NULL, w, h, 32, 0);
 233     g_assert(im != NULL);
 234
 235     in = l->surface.pixel_data;
 236     out = l->pixmap;
 237
 238     im->byte_order = LSBFirst;
 239 /* this malloc is a complete waste of time on normal 32bpp
 240    as reduce_depth just sets im->data = data and returns
 241 */
 242     scratch = g_new(RrPixel32, im->width * im->height);
 243     im->data = (char*) scratch;
 244     RrReduceDepth(l->inst, in, im);
 245     XPutImage(RrDisplay(l->inst), out,
 246               DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
 247               im, 0, 0, x, y, w, h);
 248     im->data = NULL;
 249     XDestroyImage(im);
 250     g_free(scratch);
 251 }
 252
 253 void RrMinsize(RrAppearance *l, gint *w, gint *h)
 254 {
 255     gint i;
 256     gint m;
 257     *w = *h = 0;
 258
 259     for (i = 0; i < l->textures; ++i) {
 260         switch (l->texture[i].type) {
 261         case RR_TEXTURE_NONE:
 262             break;
 263         case RR_TEXTURE_MASK:
 264             *w = MAX(*w, l->texture[i].data.mask.mask->width);
 265             *h = MAX(*h, l->texture[i].data.mask.mask->height);
 266             break;
 267         case RR_TEXTURE_TEXT:
 268             m = RrFontMeasureString(l->texture[i].data.text.font,
 269                                     l->texture[i].data.text.string);
 270             *w = MAX(*w, m);
 271             m = RrFontHeight(l->texture[i].data.text.font);
 272             *h += MAX(*h, m);
 273             break;
 274         case RR_TEXTURE_RGBA:
 275             *w += MAX(*w, l->texture[i].data.rgba.width);
 276             *h += MAX(*h, l->texture[i].data.rgba.height);
 277             break;
 278         }
 279     }
 280
 281     if (l->surface.relief != RR_RELIEF_FLAT) {
 282         switch (l->surface.bevel) {
 283         case RR_BEVEL_1:
 284             *w += 2;
 285             *h += 2;
 286             break;
 287         case RR_BEVEL_2:
 288             *w += 4;
 289             *h += 4;
 290             break;
 291         }
 292     } else if (l->surface.border) {
 293         *w += 2;
 294         *h += 2;
 295     }
 296
 297     if (*w < 1) *w = 1;
 298     if (*h < 1) *h = 1;
 299 }
 300
 301 gboolean RrPixmapToRGBA(const RrInstance *inst,
 302                         Pixmap pmap, Pixmap mask,
 303                         gint *w, gint *h, RrPixel32 **data)
 304 {
 305     Window xr;
 306     gint xx, xy;
 307     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
 308     XImage *xi, *xm = NULL;
 309
 310     if (!XGetGeometry(RrDisplay(inst),
 311                       pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
 312         return FALSE;
 313     if (mask) {
 314         if (!XGetGeometry(RrDisplay(inst), mask,
 315                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
 316             return FALSE;
 317         if (pw != mw || ph != mh || xd != 1)
 318             return FALSE;
 319     }
 320
 321     xi = XGetImage(RrDisplay(inst), pmap,
 322                    0, 0, pw, ph, 0xffffffff, ZPixmap);
 323     if (!xi)
 324         return FALSE;
 325
 326     if (mask) {
 327         xm = XGetImage(RrDisplay(inst), mask,
 328                        0, 0, mw, mh, 0xffffffff, ZPixmap);
 329         if (!xm)
 330             return FALSE;
 331     }
 332
 333     *data = g_new(RrPixel32, pw * ph);
 334     RrIncreaseDepth(inst, *data, xi);
 335
 336     if (mask) {
 337         /* apply transparency from the mask */
 338         di = 0;
 339         for (i = 0, y = 0; y < ph; ++y) {
 340             for (x = 0; x < pw; ++x, ++i) {
 341                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
 342                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
 343             }
 344             di += xm->bytes_per_line;
 345         }
 346     }
 347
 348     *w = pw;
 349     *h = ph;
 350
 351     return TRUE;
 352 }