1 /*
2 * Copyright 2014 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "CanvasStateHelpers.h"
9 #ifdef SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG
10 #include "SkCanvas.h"
11 #include "SkCanvasStateUtils.h"
12 #include "SkPaint.h"
13 #include "SkRect.h"
14 #include "SkRegion.h"
15
complex_layers_draw(SkCanvas * canvas,float left,float top,float right,float bottom,int32_t spacer)16 void complex_layers_draw(SkCanvas* canvas, float left, float top,
17 float right, float bottom, int32_t spacer) {
18 SkPaint bluePaint;
19 bluePaint.setColor(SK_ColorBLUE);
20 bluePaint.setStyle(SkPaint::kFill_Style);
21
22 SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
23 canvas->drawRect(rect, bluePaint);
24 canvas->translate(0, rect.height() + spacer);
25 canvas->drawRect(rect, bluePaint);
26 }
27
complex_layers_draw_from_canvas_state(SkCanvasState * state,float left,float top,float right,float bottom,int32_t spacer)28 extern "C" bool complex_layers_draw_from_canvas_state(SkCanvasState* state,
29 float left, float top, float right, float bottom, int32_t spacer) {
30 SkCanvas* canvas = SkCanvasStateUtils::CreateFromCanvasState(state);
31 if (!canvas) {
32 return false;
33 }
34 complex_layers_draw(canvas, left, top, right, bottom, spacer);
35 canvas->unref();
36 return true;
37 }
38
complex_clips_draw(SkCanvas * canvas,int32_t left,int32_t top,int32_t right,int32_t bottom,int32_t clipOp,const SkRegion & localRegion)39 void complex_clips_draw(SkCanvas* canvas, int32_t left, int32_t top,
40 int32_t right, int32_t bottom, int32_t clipOp, const SkRegion& localRegion) {
41 canvas->save();
42 SkRect clipRect = SkRect::MakeLTRB(SkIntToScalar(left), SkIntToScalar(top),
43 SkIntToScalar(right), SkIntToScalar(bottom));
44 canvas->clipRect(clipRect, (SkRegion::Op) clipOp);
45 canvas->drawColor(SK_ColorBLUE);
46 canvas->restore();
47
48 canvas->clipRegion(localRegion, (SkRegion::Op) clipOp);
49 canvas->drawColor(SK_ColorBLUE);
50 }
51
complex_clips_draw_from_canvas_state(SkCanvasState * state,int32_t left,int32_t top,int32_t right,int32_t bottom,int32_t clipOp,int32_t regionRects,int32_t * rectCoords)52 extern "C" bool complex_clips_draw_from_canvas_state(SkCanvasState* state,
53 int32_t left, int32_t top, int32_t right, int32_t bottom, int32_t clipOp,
54 int32_t regionRects, int32_t* rectCoords) {
55 SkCanvas* canvas = SkCanvasStateUtils::CreateFromCanvasState(state);
56 if (!canvas) {
57 return false;
58 }
59
60 SkRegion localRegion;
61 for (int32_t i = 0; i < regionRects; ++i) {
62 localRegion.op(rectCoords[0], rectCoords[1], rectCoords[2], rectCoords[3],
63 SkRegion::kUnion_Op);
64 rectCoords += 4;
65 }
66
67 complex_clips_draw(canvas, left, top, right, bottom, clipOp, localRegion);
68 canvas->unref();
69 return true;
70 }
71 #endif // SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG
72