skia2/gm/largeglyphblur.cpp

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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 "SkBlurMask.h"
#include "SkBlurMaskFilter.h"
#include "SkCanvas.h"
#include "SkTextBlob.h"
// This test ensures that glyphs whose point size is less than the SkGlyphCache's maxmium, but
// who have a large blur, are still handled correctly
DEF_SIMPLE_GM(largeglyphblur, canvas, 1920, 600) {
const char text[] = "Hamburgefons";
SkPaint paint;
sk_tool_utils::set_portable_typeface(&paint);
paint.setTextSize(256);
paint.setAntiAlias(true);
// setup up maskfilter
static const SkScalar kSigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(40));
SkPaint blurPaint(paint);
SkAutoTUnref<SkMaskFilter> mf(SkBlurMaskFilter::Create(kNormal_SkBlurStyle, kSigma));
blurPaint.setMaskFilter(mf);
SkTextBlobBuilder builder;
sk_tool_utils::add_to_text_blob(&builder, text, paint, 0, 0);
SkAutoTUnref<const SkTextBlob> blob(builder.build());
canvas->drawTextBlob(blob.get(), 10, 200, blurPaint);
canvas->drawTextBlob(blob.get(), 10, 200, paint);
size_t len = strlen(text);
canvas->drawText(text, len, 10, 500, blurPaint);
canvas->drawText(text, len, 10, 500, paint);
}