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,
  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     Rect 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     if (resized) {
  34         oldp = l->pixmap; /* save to free after changing the visible pixmap */
  35         l->pixmap = XCreatePixmap(RrDisplay(l->inst),
  36                                   RrRootWindow(l->inst),
  37                                   w, h, RrDepth(l->inst));
  38     } else
  39         oldp = None;
  40
  41     g_assert(l->pixmap != None);
  42     l->w = w;
  43     l->h = h;
  44
  45     if (l->xftdraw != NULL)
  46         XftDrawDestroy(l->xftdraw);
  47     l->xftdraw = XftDrawCreate(RrDisplay(l->inst), l->pixmap,
  48                                RrVisual(l->inst), RrColormap(l->inst));
  49     g_assert(l->xftdraw != NULL);
  50
  51     g_free(l->surface.RrPixel_data);
  52     l->surface.RrPixel_data = g_new(RrPixel32, w * h);
  53
  54     if (l->surface.grad == RR_SURFACE_PARENTREL) {
  55         g_assert (l->surface.parent);
  56         g_assert (l->surface.parent->w);
  57
  58         sw = l->surface.parent->w;
  59         source = (l->surface.parent->surface.RrPixel_data + l->surface.parentx +
  60                   sw * l->surface.parenty);
  61         dest = l->surface.RrPixel_data;
  62         for (i = 0; i < h; i++, source += sw, dest += w) {
  63             memcpy(dest, source, w * sizeof(RrPixel32));
  64         }
  65     }else
  66         RrRender(l, w, h);
  67
  68     RECT_SET(tarea, 0, 0, w, h);
  69     if (l->surface.grad != RR_SURFACE_PARENTREL) {
  70         if (l->surface.relief != RR_RELIEF_FLAT) {
  71             switch (l->surface.bevel) {
  72             case RR_BEVEL_1:
  73                 tarea.x += 1; tarea.y += 1;
  74                 tarea.width -= 2; tarea.height -= 2;
  75                 break;
  76             case RR_BEVEL_2:
  77                 tarea.x += 2; tarea.y += 2;
  78                 tarea.width -= 4; tarea.height -= 4;
  79                 break;
  80             }
  81         } else if (l->surface.border) {
  82             tarea.x += 1; tarea.y += 1;
  83             tarea.width -= 2; tarea.height -= 2;
  84         }
  85     }
  86
  87     for (i = 0; i < l->textures; i++) {
  88         switch (l->texture[i].type) {
  89         case RR_TEXTURE_NONE:
  90             break;
  91         case RR_TEXTURE_TEXT:
  92             if (!transferred) {
  93                 transferred = 1;
  94                 if (l->surface.grad != RR_SURFACE_SOLID)
  95                     RrPixel32_to_pixmap(l, 0, 0, w, h);
  96             }
  97             if (l->xftdraw == NULL) {
  98                 l->xftdraw = XftDrawCreate(RrDisplay(l->inst), l->pixmap,
  99                                            RrVisual(l->inst),
 100                                            RrColormap(l->inst));
 101             }
 102             RrFontDraw(l->xftdraw, &l->texture[i].data.text, &tarea);
 103         break;
 104         case RR_TEXTURE_MASK:
 105             if (!transferred) {
 106                 transferred = 1;
 107                 if (l->surface.grad != RR_SURFACE_SOLID)
 108                     RrPixel32_to_pixmap(l, 0, 0, w, h);
 109             }
 110             if (l->texture[i].data.mask.color->gc == None)
 111                 RrColorAllocateGC(l->texture[i].data.mask.color);
 112             RrPixmapMaskDraw(l->pixmap, &l->texture[i].data.mask, &tarea);
 113         break;
 114         case RR_TEXTURE_RGBA:
 115             RrImageDraw(l->surface.RrPixel_data,
 116                         &l->texture[i].data.rgba, &tarea);
 117         break;
 118         }
 119     }
 120
 121     if (!transferred) {
 122         transferred = 1;
 123         if (l->surface.grad != RR_SURFACE_SOLID)
 124             RrPixel32_to_pixmap(l, 0, 0, w, h);
 125     }
 126
 127
 128     XSetWindowBackgroundPixmap(RrDisplay(l->inst), win, l->pixmap);
 129     XClearWindow(RrDisplay(l->inst), win);
 130     if (oldp) XFreePixmap(RrDisplay(l->inst), oldp);
 131 }
 132
 133 RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
 134 {
 135   RrAppearance *out;
 136
 137   out = g_new0(RrAppearance, 1);
 138   out->inst = inst;
 139   out->textures = numtex;
 140   if (numtex) out->texture = g_new0(RrTexture, numtex);
 141
 142   return out;
 143 }
 144
 145 RrAppearance *RrAppearanceCopy(RrAppearance *orig)
 146 {
 147     RrSurface *spo, *spc;
 148     RrAppearance *copy = g_new(RrAppearance, 1);
 149
 150     copy->inst = orig->inst;
 151
 152     spo = &(orig->surface);
 153     spc = &(copy->surface);
 154     spc->grad = spo->grad;
 155     spc->relief = spo->relief;
 156     spc->bevel = spo->bevel;
 157     if (spo->primary != NULL)
 158         spc->primary = RrColorNew(copy->inst,
 159                                   spo->primary->r,
 160                                   spo->primary->g,
 161                                   spo->primary->b);
 162     else spc->primary = NULL;
 163
 164     if (spo->secondary != NULL)
 165         spc->secondary = RrColorNew(copy->inst,
 166                                     spo->secondary->r,
 167                                     spo->secondary->g,
 168                                     spo->secondary->b);
 169     else spc->secondary = NULL;
 170
 171     if (spo->border_color != NULL)
 172         spc->border_color = RrColorNew(copy->inst,
 173                                        spo->border_color->r,
 174                                        spo->border_color->g,
 175                                        spo->border_color->b);
 176     else spc->border_color = NULL;
 177
 178     if (spo->bevel_dark != NULL)
 179         spc->bevel_dark = RrColorNew(copy->inst,
 180                                      spo->bevel_dark->r,
 181                                      spo->bevel_dark->g,
 182                                      spo->bevel_dark->b);
 183     else spc->bevel_dark = NULL;
 184
 185     if (spo->bevel_light != NULL)
 186         spc->bevel_light = RrColorNew(copy->inst,
 187                                       spo->bevel_light->r,
 188                                       spo->bevel_light->g,
 189                                       spo->bevel_light->b);
 190     else spc->bevel_light = NULL;
 191
 192     spc->interlaced = spo->interlaced;
 193     spc->border = spo->border;
 194     spc->RrPixel_data = NULL;
 195
 196     copy->textures = orig->textures;
 197     copy->texture = g_memdup(orig->texture,
 198                              orig->textures * sizeof(RrTexture));
 199     copy->pixmap = None;
 200     copy->xftdraw = NULL;
 201     copy->w = copy->h = 0;
 202     return copy;
 203 }
 204
 205 void RrAppearanceFree(RrAppearance *a)
 206 {
 207     if (a) {
 208         RrSurface *p;
 209         if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
 210         if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
 211         if (a->textures)
 212             g_free(a->texture);
 213         p = &a->surface;
 214         RrColorFree(p->primary);
 215         RrColorFree(p->secondary);
 216         RrColorFree(p->border_color);
 217         RrColorFree(p->bevel_dark);
 218         RrColorFree(p->bevel_light);
 219         g_free(p->RrPixel_data);
 220
 221         g_free(a);
 222     }
 223 }
 224
 225
 226 static void RrPixel32_to_pixmap(RrAppearance *l, 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.RrPixel_data;
 236     out = l->pixmap;
 237
 238     im->byte_order = RrEndian;
 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                                     l->texture[i].data.text.shadow,
 271                                     l->texture[i].data.text.offset);
 272             *w = MAX(*w, m);
 273             m = RrFontHeight(l->texture[i].data.text.font,
 274                              l->texture[i].data.text.shadow,
 275                              l->texture[i].data.text.offset);
 276             *h += MAX(*h, m);
 277             break;
 278         case RR_TEXTURE_RGBA:
 279             *w += MAX(*w, l->texture[i].data.rgba.width);
 280             *h += MAX(*h, l->texture[i].data.rgba.height);
 281             break;
 282         }
 283     }
 284
 285     if (l->surface.relief != RR_RELIEF_FLAT) {
 286         switch (l->surface.bevel) {
 287         case RR_BEVEL_1:
 288             *w += 2;
 289             *h += 2;
 290             break;
 291         case RR_BEVEL_2:
 292             *w += 4;
 293             *h += 4;
 294             break;
 295         }
 296     } else if (l->surface.border) {
 297         *w += 2;
 298         *h += 2;
 299     }
 300
 301     if (*w < 1) *w = 1;
 302     if (*h < 1) *h = 1;
 303 }
 304
 305 gboolean RrPixmapToRGBA(const RrInstance *inst,
 306                         Pixmap pmap, Pixmap mask,
 307                         gint *w, gint *h, RrPixel32 **data)
 308 {
 309     Window xr;
 310     gint xx, xy;
 311     guint pw, ph, mw, mh, xb, xd, i, x, y, di;
 312     XImage *xi, *xm = NULL;
 313
 314     if (!XGetGeometry(RrDisplay(inst),
 315                       pmap, &xr, &xx, &xy, &pw, &ph, &xb, &xd))
 316         return FALSE;
 317     if (mask) {
 318         if (!XGetGeometry(RrDisplay(inst), mask,
 319                           &xr, &xx, &xy, &mw, &mh, &xb, &xd))
 320             return FALSE;
 321         if (pw != mw || ph != mh || xd != 1)
 322             return FALSE;
 323     }
 324
 325     xi = XGetImage(RrDisplay(inst), pmap,
 326                    0, 0, pw, ph, 0xffffffff, ZPixmap);
 327     if (!xi)
 328         return FALSE;
 329
 330     if (mask) {
 331         xm = XGetImage(RrDisplay(inst), mask,
 332                        0, 0, mw, mh, 0xffffffff, ZPixmap);
 333         if (!xm)
 334             return FALSE;
 335     }
 336
 337     *data = g_new(RrPixel32, pw * ph);
 338     RrIncreaseDepth(inst, *data, xi);
 339
 340     if (mask) {
 341         /* apply transparency from the mask */
 342         di = 0;
 343         for (i = 0, y = 0; y < ph; ++y) {
 344             for (x = 0; x < pw; ++x, ++i) {
 345                 if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
 346                     (*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
 347             }
 348             di += xm->bytes_per_line;
 349         }
 350     }
 351
 352     *w = pw;
 353     *h = ph;
 354
 355     return TRUE;
 356 }