100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
/*
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* Copyright 2013 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/gm.h"
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#include "include/core/SkBitmap.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkImageFilter.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/effects/SkImageFilters.h"
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#include <utility>
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static void make_bm(SkBitmap* bm) {
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bm->allocN32Pixels(100, 100);
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bm->eraseColor(SK_ColorBLUE);
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SkCanvas canvas(*bm);
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(SK_ColorRED);
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canvas.drawCircle(50, 50, 50, paint);
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}
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static void draw_1_bitmap(SkCanvas* canvas, const SkBitmap& bm, bool doClip,
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int dx, int dy, sk_sp<SkImageFilter> filter) {
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SkAutoCanvasRestore acr(canvas, true);
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SkPaint paint;
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SkRect clipR = SkRect::MakeXYWH(SkIntToScalar(dx),
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SkIntToScalar(dy),
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SkIntToScalar(bm.width()),
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SkIntToScalar(bm.height()));
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paint.setImageFilter(std::move(filter));
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clipR.inset(5, 5);
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canvas->translate(SkIntToScalar(bm.width() + 20), 0);
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if (doClip) {
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canvas->save();
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canvas->clipRect(clipR);
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}
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canvas->drawImage(bm.asImage(), SkIntToScalar(dx), SkIntToScalar(dy),
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SkSamplingOptions(), &paint);
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if (doClip) {
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canvas->restore();
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}
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}
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/**
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* Compare output of drawSprite and drawBitmap (esp. clipping and imagefilters)
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*/
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class SpriteBitmapGM : public skiagm::GM {
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public:
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SpriteBitmapGM() {}
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protected:
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SkString onShortName() override {
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return SkString("spritebitmap");
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}
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SkISize onISize() override {
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return SkISize::Make(640, 480);
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}
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void onDraw(SkCanvas* canvas) override {
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SkBitmap bm;
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make_bm(&bm);
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int dx = 10;
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int dy = 10;
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SkScalar sigma = 8;
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sk_sp<SkImageFilter> filter(SkImageFilters::Blur(sigma, sigma, nullptr));
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draw_1_bitmap(canvas, bm, false, dx, dy, nullptr);
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dy += bm.height() + 20;
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draw_1_bitmap(canvas, bm, false, dx, dy, filter);
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dy += bm.height() + 20;
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draw_1_bitmap(canvas, bm, true, dx, dy, nullptr);
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dy += bm.height() + 20;
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draw_1_bitmap(canvas, bm, true, dx, dy, filter);
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}
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private:
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using INHERITED = GM;
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};
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DEF_GM( return new SpriteBitmapGM; )
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