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/*
* 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.h"
#include "sk_tool_utils.h"
#include "SkShader.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(sk_tool_utils::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.drawBitmap(colorBmp, 0, 0);
colorBmp.eraseColor(sk_tool_utils::color_to_565(0xFF008200));
canvas.drawBitmap(colorBmp, 20, 0);
colorBmp.eraseColor(sk_tool_utils::color_to_565(0xFFFF9000));
canvas.drawBitmap(colorBmp, 0, 20);
colorBmp.eraseColor(sk_tool_utils::color_to_565(0xFF2000FF));
canvas.drawBitmap(colorBmp, 20, 20);
}
SkString onShortName() override { return SkString("bmp_filter_quality_repeat"); }
SkISize onISize() 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 {
constexpr struct {
SkFilterQuality fQuality;
const char* fName;
} kQualities[] = {
{kNone_SkFilterQuality, "none"},
{kLow_SkFilterQuality, "low"},
{kMedium_SkFilterQuality, "medium"},
{kHigh_SkFilterQuality, "high"},
};
SkRect rect = SkRect::MakeLTRB(20, 60, 220, 210);
SkMatrix lm = SkMatrix::I();
lm.setScaleX(scaleX);
lm.setTranslateX(423);
lm.setTranslateY(330);
SkPaint textPaint;
sk_tool_utils::set_portable_typeface(&textPaint);
textPaint.setAntiAlias(true);
SkPaint bmpPaint(textPaint);
SkAutoCanvasRestore acr(canvas, true);
for (size_t q = 0; q < SK_ARRAY_COUNT(kQualities); ++q) {
constexpr SkShader::TileMode kTM = SkShader::kRepeat_TileMode;
bmpPaint.setShader(SkShader::MakeBitmapShader(fBmp, kTM, kTM, &lm));
bmpPaint.setFilterQuality(kQualities[q].fQuality);
canvas->drawRect(rect, bmpPaint);
canvas->drawString(kQualities[q].fName, 20, 40, textPaint);
canvas->translate(250, 0);
}
}
SkBitmap fBmp;
typedef skiagm::GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new BmpFilterQualityRepeat;)
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