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 std::unique_ptr<SkCanvas> canvas = SkCanvasStateUtils::MakeFromCanvasState(state);
31 if (!canvas) {
32 return false;
33 }
34 complex_layers_draw(canvas.get(), left, top, right, bottom, spacer);
35 return true;
36 }
37
complex_clips_draw(SkCanvas * canvas,int32_t left,int32_t top,int32_t right,int32_t bottom,int32_t clipOp,const SkRegion & localRegion)38 void complex_clips_draw(SkCanvas* canvas, int32_t left, int32_t top,
39 int32_t right, int32_t bottom, int32_t clipOp, const SkRegion& localRegion) {
40 canvas->save();
41 SkRect clipRect = SkRect::MakeLTRB(SkIntToScalar(left), SkIntToScalar(top),
42 SkIntToScalar(right), SkIntToScalar(bottom));
43 canvas->clipRect(clipRect, (SkRegion::Op) clipOp);
44 canvas->drawColor(SK_ColorBLUE);
45 canvas->restore();
46
47 canvas->clipRegion(localRegion, (SkClipOp) clipOp);
48 canvas->drawColor(SK_ColorBLUE);
49 }
50
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)51 extern "C" bool complex_clips_draw_from_canvas_state(SkCanvasState* state,
52 int32_t left, int32_t top, int32_t right, int32_t bottom, int32_t clipOp,
53 int32_t regionRects, int32_t* rectCoords) {
54 std::unique_ptr<SkCanvas> canvas = SkCanvasStateUtils::MakeFromCanvasState(state);
55 if (!canvas) {
56 return false;
57 }
58
59 SkRegion localRegion;
60 for (int32_t i = 0; i < regionRects; ++i) {
61 localRegion.op(rectCoords[0], rectCoords[1], rectCoords[2], rectCoords[3],
62 SkRegion::kUnion_Op);
63 rectCoords += 4;
64 }
65
66 complex_clips_draw(canvas.get(), left, top, right, bottom, clipOp, localRegion);
67 return true;
68 }
69 #endif // SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG
70