1 /*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-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/SkColor.h"
12 #include "include/core/SkFont.h"
13 #include "include/core/SkMaskFilter.h"
14 #include "include/core/SkPaint.h"
15 #include "include/core/SkRect.h"
16 #include "include/core/SkRefCnt.h"
17 #include "include/core/SkScalar.h"
18 #include "include/core/SkSize.h"
19 #include "include/core/SkString.h"
20 #include "include/core/SkTextBlob.h"
21 #include "include/core/SkTypeface.h"
22 #include "src/core/SkBlurMask.h"
23 #include "tools/ToolUtils.h"
24 #include "tools/fonts/FontToolUtils.h"
25
26 #include <string.h>
27
28 #define WIDTH 800
29 #define HEIGHT 800
30
draw_text(SkCanvas * canvas,sk_sp<SkTextBlob> blob,const SkPaint & paint,const SkPaint & blurPaint,const SkPaint & clearPaint)31 static void draw_text(SkCanvas* canvas, sk_sp<SkTextBlob> blob,
32 const SkPaint& paint, const SkPaint& blurPaint,
33 const SkPaint& clearPaint) {
34 canvas->save();
35 canvas->clipRect(SkRect::MakeLTRB(0, 0, 1081, 665));
36 canvas->drawRect(SkRect::MakeLTRB(0, 0, 1081, 665), clearPaint);
37 // draw as blurred to push glyph to be too large for atlas
38 canvas->drawTextBlob(blob, 0, 256, blurPaint);
39 canvas->drawTextBlob(blob, 0, 477, paint);
40 canvas->restore();
41 }
42
43 // This test ensures that glyphs that are too large for the atlas
44 // are both translated and clipped correctly.
45 class ClipErrorGM : public skiagm::GM {
46 public:
ClipErrorGM()47 ClipErrorGM() {}
48
49 protected:
getName() const50 SkString getName() const override { return SkString("cliperror"); }
51
getISize()52 SkISize getISize() override { return SkISize::Make(WIDTH, HEIGHT); }
53
onDraw(SkCanvas * canvas)54 void onDraw(SkCanvas* canvas) override {
55 SkPaint paint;
56 paint.setAntiAlias(true);
57
58 SkFont font(ToolUtils::DefaultPortableTypeface(), 256);
59
60 // setup up maskfilter
61 const SkScalar kSigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(50));
62
63 SkPaint blurPaint(paint);
64 blurPaint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, kSigma));
65
66 const char text[] = "hambur";
67 auto blob = SkTextBlob::MakeFromText(text, strlen(text), font);
68
69 SkPaint clearPaint(paint);
70 clearPaint.setColor(SK_ColorWHITE);
71
72 canvas->save();
73 canvas->translate(0, 0);
74 canvas->clipRect(SkRect::MakeLTRB(0, 0, WIDTH, 256));
75 draw_text(canvas, blob, paint, blurPaint, clearPaint);
76 canvas->restore();
77
78 canvas->save();
79 canvas->translate(0, 256);
80 canvas->clipRect(SkRect::MakeLTRB(0, 256, WIDTH, 510));
81 draw_text(canvas, blob, paint, blurPaint, clearPaint);
82 canvas->restore();
83 }
84
85 private:
86 using INHERITED = skiagm::GM;
87 };
88
89 DEF_GM(return new ClipErrorGM;)
90