xref: /aosp_15_r20/external/skia/gm/largeglyphblur.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1 /*
2  * Copyright 2015 Google Inc.
3  *
4  * Use of this source code is governed by a BD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #include "gm/gm.h"
9 #include "include/core/SkBlurTypes.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkFont.h"
12 #include "include/core/SkFontTypes.h"
13 #include "include/core/SkMaskFilter.h"
14 #include "include/core/SkPaint.h"
15 #include "include/core/SkScalar.h"
16 #include "include/core/SkTextBlob.h"
17 #include "include/core/SkTypeface.h"
18 #include "src/core/SkBlurMask.h"
19 #include "tools/ToolUtils.h"
20 #include "tools/fonts/FontToolUtils.h"
21 
22 #include <string.h>
23 
24 // This test ensures that glyphs whose point size is less than the SkStrike's maxmium, but
25 // who have a large blur, are still handled correctly
26 DEF_SIMPLE_GM(largeglyphblur, canvas, 1920, 600) {
27     const char text[] = "Hamburgefons";
28 
29     SkFont font(ToolUtils::DefaultPortableTypeface(), 256);
30     auto blob = SkTextBlob::MakeFromText(text, strlen(text), font);
31 
32     // setup up maskfilter
33     const SkScalar kSigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(40));
34 
35     SkPaint blurPaint;
36     blurPaint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, kSigma));
37 
38     canvas->drawTextBlob(blob, 10, 200, blurPaint);
39     canvas->drawTextBlob(blob, 10, 200, SkPaint());
40 
41     size_t len = strlen(text);
42     canvas->drawSimpleText(text, len, SkTextEncoding::kUTF8, 10, 500, font, blurPaint);
43     canvas->drawSimpleText(text, len, SkTextEncoding::kUTF8, 10, 500, font, SkPaint());
44 }
45