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author | commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-08-08 02:52:05 +0000 |
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committer | commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-08-08 02:52:05 +0000 |
commit | d2623a1a0bcd23801c86a7d3f352b5e1f1c2e195 (patch) | |
tree | fd886d61ad79bfb5ffa1d25ee017696d5a60aa8d /gm/circularclips.cpp | |
parent | b265741cc17f897b349caacdb890119e4111a415 (diff) |
Use Path Ops to generate PDF clips
R=vandebo@chromium.org, edisonn@google.com, caryclark@google.com
Author: richardlin@chromium.org
Review URL: https://chromiumcodereview.appspot.com/21161003
git-svn-id: http://skia.googlecode.com/svn/trunk@10633 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'gm/circularclips.cpp')
-rw-r--r-- | gm/circularclips.cpp | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/gm/circularclips.cpp b/gm/circularclips.cpp new file mode 100644 index 0000000000..fdf2dfb4f3 --- /dev/null +++ b/gm/circularclips.cpp @@ -0,0 +1,78 @@ +/* + * Copyright 2013 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "gm.h" +#include "SkCanvas.h" +#include "SkPath.h" + +namespace skiagm { + +class CircularClipsGM : public GM { +public: + CircularClipsGM() {} + +protected: + virtual SkString onShortName() { + return SkString("circular-clips"); + } + + virtual SkISize onISize() { + return SkISize::Make(800, 600); + } + + virtual void onDraw(SkCanvas* canvas) { + SkRegion::Op ops[] = { + SkRegion::kDifference_Op, + SkRegion::kIntersect_Op, + SkRegion::kUnion_Op, + SkRegion::kXOR_Op, + SkRegion::kReverseDifference_Op, + SkRegion::kReplace_Op, + }; + + SkScalar x1 = 80, x2 = 120; + SkScalar y = 50; + SkScalar r = 40; + + SkPath circle1, circle2; + circle1.addCircle(x1, y, r, SkPath::kCW_Direction); + circle2.addCircle(x2, y, r, SkPath::kCW_Direction); + SkRect rect = SkRect::MakeLTRB(x1 - r, y - r, x2 + r, y + r); + + SkPaint fillPaint; + + for (size_t i = 0; i < 4; i++) { + circle1.toggleInverseFillType(); + if (i % 2 == 0) { + circle2.toggleInverseFillType(); + } + + canvas->save(); + for (size_t op = 0; op < SK_ARRAY_COUNT(ops); op++) { + canvas->save(); + + canvas->clipPath(circle1, SkRegion::kReplace_Op); + canvas->clipPath(circle2, ops[op]); + + canvas->drawRect(rect, fillPaint); + + canvas->restore(); + canvas->translate(0, 2 * y); + } + canvas->restore(); + canvas->translate(x1 + x2, 0); + } + } + +private: + typedef GM INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +DEF_GM( return new CircularClipsGM; ) +} |