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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkCanvas.h"
#include "SkSurface.h"
#include "SkTextBlob.h"
// This tests that we don't try to reuse textblobs from the GPU textblob cache across pixel geometry
// changes when we have LCD. crbug/486744
namespace skiagm {
class TextBlobGeometryChange : public GM {
public:
TextBlobGeometryChange() { }
protected:
SkString onShortName() override {
return SkString("textblobgeometrychange");
}
SkISize onISize() override {
return SkISize::Make(kWidth, kHeight);
}
void onDraw(SkCanvas* canvas) override {
const char text[] = "Hamburgefons";
SkPaint paint;
sk_tool_utils::set_portable_typeface(&paint);
paint.setTextSize(20);
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
SkTextBlobBuilder builder;
sk_tool_utils::add_to_text_blob(&builder, text, paint, 10, 10);
SkAutoTUnref<const SkTextBlob> blob(builder.build());
SkImageInfo info = SkImageInfo::MakeN32Premul(200, 200, canvas->imageInfo().profileType());
SkSurfaceProps canvasProps(SkSurfaceProps::kLegacyFontHost_InitType);
uint32_t gammaCorrect = canvas->getProps(&canvasProps)
? canvasProps.flags() & SkSurfaceProps::kGammaCorrect_Flag : 0;
SkSurfaceProps props(gammaCorrect, kUnknown_SkPixelGeometry);
auto surface = canvas->makeSurface(info, &props);
if (!surface) {
surface = SkSurface::MakeRaster(info, &props);
}
SkCanvas* c = surface->getCanvas();
// LCD text on white background
SkRect rect = SkRect::MakeLTRB(0.f, 0.f, SkIntToScalar(kWidth), kHeight / 2.f);
SkPaint rectPaint;
rectPaint.setColor(0xffffffff);
canvas->drawRect(rect, rectPaint);
canvas->drawTextBlob(blob.get(), 10, 50, paint);
// This should not look garbled since we should disable LCD text in this case
// (i.e., unknown pixel geometry)
c->clear(0x00ffffff);
c->drawTextBlob(blob.get(), 10, 150, paint);
surface->draw(canvas, 0, 0, nullptr);
}
private:
static const int kWidth = 200;
static const int kHeight = 200;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new TextBlobGeometryChange;)
}
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