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| 1 /* Based on GTK code by the Chromium Authors. The original header for that code |
| 2 * continues below */ |
| 3 |
| 4 /* GDK - The GIMP Drawing Kit |
| 5 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
| 6 * |
| 7 * This library is free software; you can redistribute it and/or |
| 8 * modify it under the terms of the GNU Lesser General Public |
| 9 * License as published by the Free Software Foundation; either |
| 10 * version 2 of the License, or (at your option) any later version. |
| 11 * |
| 12 * This library is distributed in the hope that it will be useful, |
| 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 * Lesser General Public License for more details. |
| 16 * |
| 17 * You should have received a copy of the GNU Lesser General Public |
| 18 * License along with this library; if not, write to the |
| 19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 * Boston, MA 02111-1307, USA. |
| 21 */ |
| 22 |
| 23 /* |
| 24 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS |
| 25 * file for a list of people on the GTK+ Team. See the ChangeLog |
| 26 * files for a list of changes. These files are distributed with |
| 27 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. |
| 28 */ |
| 29 |
| 30 #include <stdio.h> |
| 31 |
| 32 #include <gdk/gdk.h> |
| 33 #include <SkCanvas.h> |
| 34 #include <SkBitmap.h> |
| 35 #include <SkDevice.h> |
| 36 |
| 37 #include "GdkSkia.h" |
| 38 |
| 39 static GdkGC *gdk_skia_create_gc (GdkDrawable *drawable, |
| 40 GdkGCValues *values, |
| 41 GdkGCValuesMask mask); |
| 42 static void gdk_skia_draw_rectangle (GdkDrawable *drawable, |
| 43 GdkGC *gc, |
| 44 gboolean filled, |
| 45 gint x, |
| 46 gint y, |
| 47 gint width, |
| 48 gint height); |
| 49 static void gdk_skia_draw_arc (GdkDrawable *drawable, |
| 50 GdkGC *gc, |
| 51 gboolean filled, |
| 52 gint x, |
| 53 gint y, |
| 54 gint width, |
| 55 gint height, |
| 56 gint angle1, |
| 57 gint angle2); |
| 58 static void gdk_skia_draw_polygon (GdkDrawable *drawable, |
| 59 GdkGC *gc, |
| 60 gboolean filled, |
| 61 GdkPoint *points, |
| 62 gint npoints); |
| 63 static void gdk_skia_draw_text (GdkDrawable *drawable, |
| 64 GdkFont *font, |
| 65 GdkGC *gc, |
| 66 gint x, |
| 67 gint y, |
| 68 const gchar *text, |
| 69 gint text_length); |
| 70 static void gdk_skia_draw_text_wc (GdkDrawable *drawable, |
| 71 GdkFont *font, |
| 72 GdkGC *gc, |
| 73 gint x, |
| 74 gint y, |
| 75 const GdkWChar *text, |
| 76 gint text_length); |
| 77 static void gdk_skia_draw_drawable (GdkDrawable *drawable, |
| 78 GdkGC *gc, |
| 79 GdkPixmap *src, |
| 80 gint xsrc, |
| 81 gint ysrc, |
| 82 gint xdest, |
| 83 gint ydest, |
| 84 gint width, |
| 85 gint height); |
| 86 static void gdk_skia_draw_points (GdkDrawable *drawable, |
| 87 GdkGC *gc, |
| 88 GdkPoint *points, |
| 89 gint npoints); |
| 90 static void gdk_skia_draw_segments (GdkDrawable *drawable, |
| 91 GdkGC *gc, |
| 92 GdkSegment *segs, |
| 93 gint nsegs); |
| 94 static void gdk_skia_draw_lines (GdkDrawable *drawable, |
| 95 GdkGC *gc, |
| 96 GdkPoint *points, |
| 97 gint npoints); |
| 98 |
| 99 static void gdk_skia_draw_glyphs (GdkDrawable *drawable, |
| 100 GdkGC *gc, |
| 101 PangoFont *font, |
| 102 gint x, |
| 103 gint y, |
| 104 PangoGlyphString *glyphs); |
| 105 static void gdk_skia_draw_glyphs_transformed (GdkDrawable *drawable, |
| 106 GdkGC *gc, |
| 107 PangoMatrix *matrix, |
| 108 PangoFont *font, |
| 109 gint x, |
| 110 gint y, |
| 111 PangoGlyphString *glyphs); |
| 112 |
| 113 static void gdk_skia_draw_image (GdkDrawable *drawable, |
| 114 GdkGC *gc, |
| 115 GdkImage *image, |
| 116 gint xsrc, |
| 117 gint ysrc, |
| 118 gint xdest, |
| 119 gint ydest, |
| 120 gint width, |
| 121 gint height); |
| 122 static void gdk_skia_draw_pixbuf (GdkDrawable *drawable, |
| 123 GdkGC *gc, |
| 124 GdkPixbuf *pixbuf, |
| 125 gint src_x, |
| 126 gint src_y, |
| 127 gint dest_x, |
| 128 gint dest_y, |
| 129 gint width, |
| 130 gint height, |
| 131 GdkRgbDither dither, |
| 132 gint x_dither, |
| 133 gint y_dither); |
| 134 static void gdk_skia_draw_trapezoids (GdkDrawable *drawable, |
| 135 GdkGC *gc, |
| 136 GdkTrapezoid *trapezoids, |
| 137 gint n_trapezoids); |
| 138 |
| 139 static void gdk_skia_real_get_size (GdkDrawable *drawable, |
| 140 gint *width, |
| 141 gint *height); |
| 142 |
| 143 static GdkImage* gdk_skia_copy_to_image (GdkDrawable *drawable, |
| 144 GdkImage *image, |
| 145 gint src_x, |
| 146 gint src_y, |
| 147 gint dest_x, |
| 148 gint dest_y, |
| 149 gint width, |
| 150 gint height); |
| 151 |
| 152 static cairo_surface_t *gdk_skia_ref_cairo_surface (GdkDrawable *drawable); |
| 153 |
| 154 static GdkVisual* gdk_skia_real_get_visual (GdkDrawable *drawable); |
| 155 static gint gdk_skia_real_get_depth (GdkDrawable *drawable); |
| 156 static void gdk_skia_real_set_colormap (GdkDrawable *drawable, |
| 157 GdkColormap *cmap); |
| 158 static GdkColormap* gdk_skia_real_get_colormap (GdkDrawable *drawable); |
| 159 static GdkScreen* gdk_skia_real_get_screen (GdkDrawable *drawable); |
| 160 static void gdk_skia_init (GdkSkiaObject *skia); |
| 161 static void gdk_skia_class_init (GdkSkiaObjectClass *klass); |
| 162 static void gdk_skia_finalize (GObject *object); |
| 163 |
| 164 static gpointer parent_class = NULL; |
| 165 |
| 166 // ----------------------------------------------------------------------------- |
| 167 // Usually GDK code is C code. However, since we are interfacing to a C++ |
| 168 // library, we must compile in C++ mode to parse its headers etc. Thankfully, |
| 169 // these are the only non-static symbol in the file so we can just wrap them in |
| 170 // an extern decl to disable name mangling and everything should be happy. |
| 171 // ----------------------------------------------------------------------------- |
| 172 extern "C" { |
| 173 GType |
| 174 gdk_skia_get_type (void) |
| 175 { |
| 176 static GType object_type = 0; |
| 177 |
| 178 if (!object_type) |
| 179 object_type = g_type_register_static_simple (GDK_TYPE_DRAWABLE, |
| 180 "GdkSkia", |
| 181 sizeof (GdkSkiaObjectClass), |
| 182 (GClassInitFunc) gdk_skia_class
_init, |
| 183 sizeof (GdkSkiaObject), |
| 184 (GInstanceInitFunc) gdk_skia_in
it, |
| 185 (GTypeFlags) 0); |
| 186 |
| 187 return object_type; |
| 188 } |
| 189 |
| 190 GdkSkia* |
| 191 gdk_skia_new(SkCanvas *canvas) |
| 192 { |
| 193 GdkSkia *skia = GDK_SKIA(g_object_new (GDK_TYPE_SKIA, NULL)); |
| 194 reinterpret_cast<GdkSkiaObject*>(skia)->canvas = canvas; |
| 195 return skia; |
| 196 } |
| 197 |
| 198 } // extern "C" |
| 199 |
| 200 static void |
| 201 gdk_skia_init (GdkSkiaObject *skia) |
| 202 { |
| 203 /* 0 initialization is fine for us */ |
| 204 } |
| 205 |
| 206 static void |
| 207 gdk_skia_class_init (GdkSkiaObjectClass *klass) |
| 208 { |
| 209 GObjectClass *object_class = G_OBJECT_CLASS (klass); |
| 210 GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass); |
| 211 |
| 212 parent_class = g_type_class_peek_parent (klass); |
| 213 |
| 214 object_class->finalize = gdk_skia_finalize; |
| 215 |
| 216 drawable_class->create_gc = gdk_skia_create_gc; |
| 217 drawable_class->draw_rectangle = gdk_skia_draw_rectangle; |
| 218 drawable_class->draw_arc = gdk_skia_draw_arc; |
| 219 drawable_class->draw_polygon = gdk_skia_draw_polygon; |
| 220 drawable_class->draw_text = gdk_skia_draw_text; |
| 221 drawable_class->draw_text_wc = gdk_skia_draw_text_wc; |
| 222 drawable_class->draw_drawable = gdk_skia_draw_drawable; |
| 223 drawable_class->draw_points = gdk_skia_draw_points; |
| 224 drawable_class->draw_segments = gdk_skia_draw_segments; |
| 225 drawable_class->draw_lines = gdk_skia_draw_lines; |
| 226 drawable_class->draw_glyphs = gdk_skia_draw_glyphs; |
| 227 drawable_class->draw_glyphs_transformed = gdk_skia_draw_glyphs_transformed; |
| 228 drawable_class->draw_image = gdk_skia_draw_image; |
| 229 drawable_class->draw_pixbuf = gdk_skia_draw_pixbuf; |
| 230 drawable_class->draw_trapezoids = gdk_skia_draw_trapezoids; |
| 231 drawable_class->get_depth = gdk_skia_real_get_depth; |
| 232 drawable_class->get_screen = gdk_skia_real_get_screen; |
| 233 drawable_class->get_size = gdk_skia_real_get_size; |
| 234 drawable_class->set_colormap = gdk_skia_real_set_colormap; |
| 235 drawable_class->get_colormap = gdk_skia_real_get_colormap; |
| 236 drawable_class->get_visual = gdk_skia_real_get_visual; |
| 237 drawable_class->_copy_to_image = gdk_skia_copy_to_image; |
| 238 drawable_class->ref_cairo_surface = gdk_skia_ref_cairo_surface; |
| 239 } |
| 240 |
| 241 static void |
| 242 gdk_skia_finalize (GObject *object) |
| 243 { |
| 244 GdkSkiaObject *const skia = (GdkSkiaObject *) object; |
| 245 if (skia->surface) |
| 246 cairo_surface_destroy(skia->surface); |
| 247 G_OBJECT_CLASS (parent_class)->finalize(object); |
| 248 } |
| 249 |
| 250 #define NOTIMPLEMENTED fprintf(stderr, "GDK Skia not implemented: %s\n", __PRETT
Y_FUNCTION__) |
| 251 |
| 252 static GdkGC * |
| 253 gdk_skia_create_gc(GdkDrawable *drawable, |
| 254 GdkGCValues *values, |
| 255 GdkGCValuesMask mask) { |
| 256 NOTIMPLEMENTED; |
| 257 return NULL; |
| 258 } |
| 259 |
| 260 static void |
| 261 gc_set_paint(GdkGC *gc, SkPaint *paint) { |
| 262 GdkGCValues values; |
| 263 gdk_gc_get_values(gc, &values); |
| 264 |
| 265 paint->setARGB(255, |
| 266 values.foreground.pixel >> 16, |
| 267 values.foreground.pixel >> 8, |
| 268 values.foreground.pixel); |
| 269 paint->setStrokeWidth(values.line_width); |
| 270 } |
| 271 |
| 272 static void |
| 273 gdk_skia_draw_rectangle(GdkDrawable *drawable, |
| 274 GdkGC *gc, |
| 275 gboolean filled, |
| 276 gint x, |
| 277 gint y, |
| 278 gint width, |
| 279 gint height) { |
| 280 GdkSkiaObject *skia = (GdkSkiaObject *) drawable; |
| 281 SkPaint paint; |
| 282 gc_set_paint(gc, &paint); |
| 283 |
| 284 if (filled) { |
| 285 paint.setStyle(SkPaint::kFill_Style); |
| 286 } else { |
| 287 paint.setStyle(SkPaint::kStroke_Style); |
| 288 } |
| 289 |
| 290 SkRect rect; |
| 291 rect.set(x, y, x + width, y + height); |
| 292 |
| 293 skia->canvas->drawRect(rect, paint); |
| 294 } |
| 295 |
| 296 static void |
| 297 gdk_skia_draw_arc(GdkDrawable *drawable, |
| 298 GdkGC *gc, |
| 299 gboolean filled, |
| 300 gint x, |
| 301 gint y, |
| 302 gint width, |
| 303 gint height, |
| 304 gint angle1, |
| 305 gint angle2) { |
| 306 NOTIMPLEMENTED; |
| 307 } |
| 308 |
| 309 static void |
| 310 gdk_skia_draw_polygon(GdkDrawable *drawable, |
| 311 GdkGC *gc, |
| 312 gboolean filled, |
| 313 GdkPoint *points, |
| 314 gint npoints) { |
| 315 NOTIMPLEMENTED; |
| 316 } |
| 317 |
| 318 static void |
| 319 gdk_skia_draw_text(GdkDrawable *drawable, |
| 320 GdkFont *font, |
| 321 GdkGC *gc, |
| 322 gint x, |
| 323 gint y, |
| 324 const gchar *text, |
| 325 gint text_length) { |
| 326 NOTIMPLEMENTED; |
| 327 } |
| 328 |
| 329 static void |
| 330 gdk_skia_draw_text_wc(GdkDrawable *drawable, |
| 331 GdkFont *font, |
| 332 GdkGC *gc, |
| 333 gint x, |
| 334 gint y, |
| 335 const GdkWChar *text, |
| 336 gint text_length) { |
| 337 NOTIMPLEMENTED; |
| 338 } |
| 339 |
| 340 static void |
| 341 gdk_skia_draw_drawable(GdkDrawable *drawable, |
| 342 GdkGC *gc, |
| 343 GdkPixmap *src, |
| 344 gint xsrc, |
| 345 gint ysrc, |
| 346 gint xdest, |
| 347 gint ydest, |
| 348 gint width, |
| 349 gint height) { |
| 350 NOTIMPLEMENTED; |
| 351 } |
| 352 |
| 353 static void |
| 354 gdk_skia_draw_points(GdkDrawable *drawable, |
| 355 GdkGC *gc, |
| 356 GdkPoint *points, |
| 357 gint npoints) { |
| 358 NOTIMPLEMENTED; |
| 359 } |
| 360 |
| 361 static void |
| 362 gdk_skia_draw_segments(GdkDrawable *drawable, |
| 363 GdkGC *gc, |
| 364 GdkSegment *segs, |
| 365 gint nsegs) { |
| 366 NOTIMPLEMENTED; |
| 367 } |
| 368 |
| 369 static void |
| 370 gdk_skia_draw_lines(GdkDrawable *drawable, |
| 371 GdkGC *gc, |
| 372 GdkPoint *points, |
| 373 gint npoints) { |
| 374 NOTIMPLEMENTED; |
| 375 } |
| 376 |
| 377 static void |
| 378 gdk_skia_draw_glyphs(GdkDrawable *drawable, |
| 379 GdkGC *gc, |
| 380 PangoFont *font, |
| 381 gint x, |
| 382 gint y, |
| 383 PangoGlyphString *glyphs) { |
| 384 NOTIMPLEMENTED; |
| 385 } |
| 386 |
| 387 static void |
| 388 gdk_skia_draw_glyphs_transformed(GdkDrawable *drawable, |
| 389 GdkGC *gc, |
| 390 PangoMatrix *matrix, |
| 391 PangoFont *font, |
| 392 gint x, |
| 393 gint y, |
| 394 PangoGlyphString *glyphs) { |
| 395 NOTIMPLEMENTED; |
| 396 } |
| 397 |
| 398 static void |
| 399 gdk_skia_draw_image(GdkDrawable *drawable, |
| 400 GdkGC *gc, |
| 401 GdkImage *image, |
| 402 gint xsrc, |
| 403 gint ysrc, |
| 404 gint xdest, |
| 405 gint ydest, |
| 406 gint width, |
| 407 gint height) { |
| 408 NOTIMPLEMENTED; |
| 409 } |
| 410 |
| 411 static void |
| 412 gdk_skia_draw_pixbuf(GdkDrawable *drawable, |
| 413 GdkGC *gc, |
| 414 GdkPixbuf *pixbuf, |
| 415 gint src_x, |
| 416 gint src_y, |
| 417 gint dest_x, |
| 418 gint dest_y, |
| 419 gint width, |
| 420 gint height, |
| 421 GdkRgbDither dither, |
| 422 gint x_dither, |
| 423 gint y_dither) { |
| 424 NOTIMPLEMENTED; |
| 425 } |
| 426 |
| 427 static void |
| 428 gdk_skia_draw_trapezoids(GdkDrawable *drawable, |
| 429 GdkGC *gc, |
| 430 GdkTrapezoid *trapezoids, |
| 431 gint n_trapezoids) { |
| 432 NOTIMPLEMENTED; |
| 433 } |
| 434 |
| 435 static void |
| 436 gdk_skia_real_get_size(GdkDrawable *drawable, |
| 437 gint *width, |
| 438 gint *height) { |
| 439 NOTIMPLEMENTED; |
| 440 } |
| 441 |
| 442 static GdkImage* |
| 443 gdk_skia_copy_to_image(GdkDrawable *drawable, |
| 444 GdkImage *image, |
| 445 gint src_x, |
| 446 gint src_y, |
| 447 gint dest_x, |
| 448 gint dest_y, |
| 449 gint width, |
| 450 gint height) { |
| 451 NOTIMPLEMENTED; |
| 452 return NULL; |
| 453 } |
| 454 |
| 455 static cairo_surface_t * |
| 456 gdk_skia_ref_cairo_surface(GdkDrawable *drawable) { |
| 457 GdkSkiaObject *const skia = (GdkSkiaObject *) drawable; |
| 458 |
| 459 if (!skia->surface) { |
| 460 SkDevice *const dev = skia->canvas->getDevice(); |
| 461 const SkBitmap *const bm = &dev->accessBitmap(true); |
| 462 |
| 463 skia->surface = cairo_image_surface_create_for_data |
| 464 ((unsigned char *) bm->getPixels(), |
| 465 CAIRO_FORMAT_ARGB32, dev->width(), dev->height(), bm->rowBytes()); |
| 466 } |
| 467 |
| 468 return cairo_surface_reference(skia->surface); |
| 469 } |
| 470 |
| 471 static GdkVisual* |
| 472 gdk_skia_real_get_visual(GdkDrawable *drawable) { |
| 473 NOTIMPLEMENTED; |
| 474 return NULL; |
| 475 } |
| 476 |
| 477 static gint |
| 478 gdk_skia_real_get_depth(GdkDrawable *drawable) { |
| 479 GdkSkiaObject *skia = (GdkSkiaObject *) drawable; |
| 480 const SkBitmap::Config config = skia->canvas->getDevice()->config(); |
| 481 |
| 482 switch (config) { |
| 483 case SkBitmap::kARGB_8888_Config: |
| 484 return 24; |
| 485 default: |
| 486 // NOTREACHED |
| 487 *reinterpret_cast<char*>(NULL) = 0; |
| 488 return 0; |
| 489 } |
| 490 } |
| 491 |
| 492 static void |
| 493 gdk_skia_real_set_colormap(GdkDrawable *drawable, |
| 494 GdkColormap *cmap) { |
| 495 NOTIMPLEMENTED; |
| 496 } |
| 497 |
| 498 static GdkColormap* |
| 499 gdk_skia_real_get_colormap(GdkDrawable *drawable) { |
| 500 NOTIMPLEMENTED; |
| 501 return NULL; |
| 502 } |
| 503 |
| 504 static GdkScreen* |
| 505 gdk_skia_real_get_screen(GdkDrawable *drawable) { |
| 506 NOTIMPLEMENTED; |
| 507 return NULL; |
| 508 } |
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Chromium Code Reviews
Issue 9757:
Cache the GdkSkia object in PlatformContextSkia so that we aren't creating (Closed)
