зеркало из https://github.com/mozilla/moz-skia.git
116 строки
3.2 KiB
C++
116 строки
3.2 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkCanvas.h"
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#include "SkPath.h"
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namespace skiagm {
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/** Draw a 2px border around the target, then red behind the target;
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set the clip to match the target, then draw >> the target in blue.
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*/
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void draw (SkCanvas* canvas, SkRect& target, int x, int y) {
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SkPaint borderPaint;
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borderPaint.setColor(SkColorSetRGB(0x0, 0xDD, 0x0));
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borderPaint.setAntiAlias(true);
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SkPaint backgroundPaint;
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backgroundPaint.setColor(SkColorSetRGB(0xDD, 0x0, 0x0));
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backgroundPaint.setAntiAlias(true);
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SkPaint foregroundPaint;
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foregroundPaint.setColor(SkColorSetRGB(0x0, 0x0, 0xDD));
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foregroundPaint.setAntiAlias(true);
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canvas->save();
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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target.inset(SkIntToScalar(-2), SkIntToScalar(-2));
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canvas->drawRect(target, borderPaint);
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target.inset(SkIntToScalar(2), SkIntToScalar(2));
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canvas->drawRect(target, backgroundPaint);
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canvas->clipRect(target, SkRegion::kIntersect_Op, true);
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target.inset(SkIntToScalar(-4), SkIntToScalar(-4));
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canvas->drawRect(target, foregroundPaint);
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canvas->restore();
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}
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void draw_square (SkCanvas* canvas, int x, int y) {
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SkRect target (SkRect::MakeWH(10 * SK_Scalar1, 10 * SK_Scalar1));
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draw(canvas, target, x, y);
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}
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void draw_column (SkCanvas* canvas, int x, int y) {
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SkRect target (SkRect::MakeWH(1 * SK_Scalar1, 10 * SK_Scalar1));
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draw(canvas, target, x, y);
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}
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void draw_bar (SkCanvas* canvas, int x, int y) {
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SkRect target (SkRect::MakeWH(10 * SK_Scalar1, 1 * SK_Scalar1));
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draw(canvas, target, x, y);
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}
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void draw_rect_tests (SkCanvas* canvas) {
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draw_square(canvas, 10, 10);
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draw_column(canvas, 30, 10);
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draw_bar(canvas, 10, 30);
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}
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/**
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Test a set of clipping problems discovered while writing blitAntiRect,
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and test all the code paths through the clipping blitters.
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Each region should show as a blue center surrounded by a 2px green
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border, with no red.
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*/
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class AAClipGM : public GM {
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public:
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AAClipGM() {
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}
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protected:
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virtual SkString onShortName() {
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return SkString("aaclip");
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}
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virtual SkISize onISize() {
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return make_isize(640, 480);
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}
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virtual void onDraw(SkCanvas* canvas) {
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// Initial pixel-boundary-aligned draw
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draw_rect_tests(canvas);
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// Repeat 4x with .2, .4, .6, .8 px offsets
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canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
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canvas->translate(SkIntToScalar(50), 0);
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draw_rect_tests(canvas);
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canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
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canvas->translate(SkIntToScalar(50), 0);
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draw_rect_tests(canvas);
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canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
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canvas->translate(SkIntToScalar(50), 0);
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draw_rect_tests(canvas);
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canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
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canvas->translate(SkIntToScalar(50), 0);
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draw_rect_tests(canvas);
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new AAClipGM; }
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static GMRegistry reg(MyFactory);
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}
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