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/*
* Copyright 2016 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 "SkBlurMask.h"
#include "SkCanvas.h"
#include "SkMaskFilter.h"
#include "SkTextBlob.h"
#define WIDTH 800
#define HEIGHT 800
static void draw_text(SkCanvas* canvas, sk_sp<SkTextBlob> blob,
const SkPaint& paint, const SkPaint& blurPaint,
const SkPaint& clearPaint) {
canvas->save();
canvas->clipRect(SkRect::MakeLTRB(0, 0, 1081, 665));
canvas->drawRect(SkRect::MakeLTRB(0, 0, 1081, 665), clearPaint);
// draw as blurred to push glyph to be too large for atlas
canvas->drawTextBlob(blob, 0, 256, blurPaint);
canvas->drawTextBlob(blob, 0, 477, paint);
canvas->restore();
}
// This test ensures that glyphs that are too large for the atlas
// are both translated and clipped correctly.
class ClipErrorGM : public skiagm::GM {
public:
ClipErrorGM() {}
protected:
SkString onShortName() override { return SkString("cliperror"); }
SkISize onISize() override { return SkISize::Make(WIDTH, HEIGHT); }
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kFill_Style);
const char text[] = "hambur";
sk_tool_utils::set_portable_typeface(&paint);
paint.setTextSize(256);
paint.setAntiAlias(true);
// setup up maskfilter
const SkScalar kSigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(50));
SkPaint blurPaint(paint);
blurPaint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, kSigma));
SkTextBlobBuilder builder;
sk_tool_utils::add_to_text_blob(&builder, text, paint, 0, 0);
sk_sp<SkTextBlob> blob(builder.make());
SkPaint clearPaint(paint);
clearPaint.setColor(SK_ColorWHITE);
canvas->save();
canvas->translate(0, 0);
canvas->clipRect(SkRect::MakeLTRB(0, 0, WIDTH, 256));
draw_text(canvas, blob, paint, blurPaint, clearPaint);
canvas->restore();
canvas->save();
canvas->translate(0, 256);
canvas->clipRect(SkRect::MakeLTRB(0, 256, WIDTH, 510));
draw_text(canvas, blob, paint, blurPaint, clearPaint);
canvas->restore();
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM(return new ClipErrorGM;)
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