blob: b170d798ff1f11db9261cf7ea3d21f6804112841 [file] [log] [blame]
/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkFont.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "tools/ToolUtils.h"
#include "tools/fonts/FontToolUtils.h"
// Inspired by svg/as-border-image/svg-as-border-image.html. Draws a four-color checker board bitmap
// such that it is stretched and repeat tiled with different filter qualities. It is testing whether
// the bmp filter respects the repeat mode at the tile seams.
class BmpFilterQualityRepeat : public skiagm::GM {
public:
BmpFilterQualityRepeat() { this->setBGColor(ToolUtils::color_to_565(0xFFCCBBAA)); }
protected:
void onOnceBeforeDraw() override {
fBmp.allocN32Pixels(40, 40, true);
SkCanvas canvas(fBmp);
SkBitmap colorBmp;
colorBmp.allocN32Pixels(20, 20, true);
colorBmp.eraseColor(0xFFFF0000);
canvas.drawImage(colorBmp.asImage(), 0, 0);
colorBmp.eraseColor(ToolUtils::color_to_565(0xFF008200));
canvas.drawImage(colorBmp.asImage(), 20, 0);
colorBmp.eraseColor(ToolUtils::color_to_565(0xFFFF9000));
canvas.drawImage(colorBmp.asImage(), 0, 20);
colorBmp.eraseColor(ToolUtils::color_to_565(0xFF2000FF));
canvas.drawImage(colorBmp.asImage(), 20, 20);
}
SkString getName() const override { return SkString("bmp_filter_quality_repeat"); }
SkISize getISize() override { return SkISize::Make(1000, 400); }
void onDraw(SkCanvas* canvas) override {
this->drawAll(canvas, 2.5f);
canvas->translate(0, 250);
canvas->scale(0.5, 0.5);
this->drawAll(canvas, 1);
}
private:
void drawAll(SkCanvas* canvas, SkScalar scaleX) const {
SkRect rect = SkRect::MakeLTRB(20, 60, 220, 210);
SkMatrix lm = SkMatrix::I();
lm.setScaleX(scaleX);
lm.setTranslateX(423);
lm.setTranslateY(330);
SkPaint textPaint;
textPaint.setAntiAlias(true);
SkPaint bmpPaint(textPaint);
SkFont font = ToolUtils::DefaultPortableFont();
SkAutoCanvasRestore acr(canvas, true);
const struct {
const char* name;
SkSamplingOptions sampling;
} recs[] = {
{ "none", SkSamplingOptions(SkFilterMode::kNearest) },
{ "low", SkSamplingOptions(SkFilterMode::kLinear) },
{ "medium", SkSamplingOptions(SkFilterMode::kLinear, SkMipmapMode::kLinear) },
{ "high", SkSamplingOptions(SkCubicResampler::Mitchell()) },
};
for (const auto& rec : recs) {
constexpr SkTileMode kTM = SkTileMode::kRepeat;
bmpPaint.setShader(fBmp.makeShader(kTM, kTM, rec.sampling, lm));
canvas->drawRect(rect, bmpPaint);
canvas->drawString(rec.name, 20, 40, font, textPaint);
canvas->translate(250, 0);
}
}
SkBitmap fBmp;
using INHERITED = skiagm::GM;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new BmpFilterQualityRepeat;)