1 /*
2 * Copyright 2013 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.h"
9
10 #include "Resources.h"
11 #include "SkCanvas.h"
12 #include "SkGradientShader.h"
13 #include "SkStream.h"
14 #include "SkTextBlob.h"
15 #include "SkTypeface.h"
16
17 namespace skiagm {
18
draw_blob(SkCanvas * canvas,const SkTextBlob * blob,const SkPaint & skPaint,const SkRect & clipRect)19 static void draw_blob(SkCanvas* canvas, const SkTextBlob* blob, const SkPaint& skPaint,
20 const SkRect& clipRect) {
21 SkPaint clipHairline;
22 clipHairline.setColor(SK_ColorWHITE);
23 clipHairline.setStyle(SkPaint::kStroke_Style);
24
25 SkPaint paint(skPaint);
26 canvas->save();
27 canvas->drawRect(clipRect, clipHairline);
28 paint.setAlpha(0x20);
29 canvas->drawTextBlob(blob, 0, 0, paint);
30 canvas->clipRect(clipRect);
31 paint.setAlpha(0xFF);
32 canvas->drawTextBlob(blob, 0, 0, paint);
33 canvas->restore();
34 }
35
36 class MixedTextBlobsGM : public GM {
37 public:
MixedTextBlobsGM()38 MixedTextBlobsGM() { }
39
40 protected:
onOnceBeforeDraw()41 void onOnceBeforeDraw() override {
42 #ifndef SK_BUILD_FOR_MAC
43 fEmojiTypeface.reset(GetResourceAsTypeface("/fonts/Funkster.ttf"));
44 fEmojiText = "Emoji!!!";
45 #else
46 fEmojiTypeface.reset(SkTypeface::CreateFromName("Apple Color Emoji", SkTypeface::kNormal));
47 fEmojiText = "\xF0\x9F\x92\xB0" "\xF0\x9F\x8F\xA1" "\xF0\x9F\x8E\x85" // ������
48 "\xF0\x9F\x8D\xAA" "\xF0\x9F\x8D\x95" "\xF0\x9F\x9A\x80"; // ������
49 #endif
50 fReallyBigATypeface.reset(GetResourceAsTypeface("/fonts/ReallyBigA.ttf"));
51
52 SkTextBlobBuilder builder;
53
54 // make textblob
55 // Text so large we draw as paths
56 SkPaint paint;
57 paint.setTextSize(384);
58 const char* text = "O";
59 sk_tool_utils::set_portable_typeface(&paint);
60
61 SkRect bounds;
62 paint.measureText(text, strlen(text), &bounds);
63
64 SkScalar yOffset = bounds.height();
65 sk_tool_utils::add_to_text_blob(&builder, text, paint, 10, yOffset);
66 SkScalar corruptedAx = bounds.width();
67 SkScalar corruptedAy = yOffset;
68
69 const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
70 const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
71
72 SkScalar xOffset = boundsHalfWidth;
73 yOffset = boundsHalfHeight;
74
75 // LCD
76 paint.setTextSize(32);
77 text = "LCD!!!!!";
78 paint.setSubpixelText(true);
79 paint.setLCDRenderText(true);
80 paint.measureText(text, strlen(text), &bounds);
81 sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.25f,
82 yOffset - bounds.height() * 0.5f);
83 yOffset += bounds.height();
84
85 // color emoji
86 paint.setSubpixelText(false);
87 paint.setLCDRenderText(false);
88 paint.setTypeface(fEmojiTypeface);
89 text = fEmojiText;
90 paint.measureText(text, strlen(text), &bounds);
91 sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.3f,
92 yOffset);
93
94 // Corrupted font
95 paint.setTextSize(12);
96 text = "aA";
97 paint.setTypeface(fReallyBigATypeface);
98 sk_tool_utils::add_to_text_blob(&builder, text, paint, corruptedAx, corruptedAy);
99 fBlob.reset(builder.build());
100 }
101
onShortName()102 SkString onShortName() override {
103 return SkString("mixedtextblobs");
104 }
105
onISize()106 SkISize onISize() override {
107 return SkISize::Make(kWidth, kHeight);
108 }
109
onDraw(SkCanvas * canvas)110 void onDraw(SkCanvas* canvas) override {
111
112 canvas->drawColor(SK_ColorGRAY);
113
114 SkPaint paint;
115
116 // setup work needed to draw text with different clips
117 paint.setColor(SK_ColorBLACK);
118 canvas->translate(10, 40);
119
120 paint.setTextSize(40);
121
122 // compute the bounds of the text and setup some clips
123 SkRect bounds = fBlob->bounds();
124
125 const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
126 const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
127 const SkScalar boundsQuarterWidth = boundsHalfWidth * SK_ScalarHalf;
128 const SkScalar boundsQuarterHeight = boundsHalfHeight * SK_ScalarHalf;
129
130 SkRect upperLeftClip = SkRect::MakeXYWH(bounds.left(), bounds.top(),
131 boundsHalfWidth, boundsHalfHeight);
132 SkRect lowerRightClip = SkRect::MakeXYWH(bounds.centerX(), bounds.centerY(),
133 boundsHalfWidth, boundsHalfHeight);
134 SkRect interiorClip = bounds;
135 interiorClip.inset(boundsQuarterWidth, boundsQuarterHeight);
136
137 const SkRect clipRects[] = { bounds, upperLeftClip, lowerRightClip, interiorClip};
138
139 size_t count = sizeof(clipRects) / sizeof(SkRect);
140 for (size_t x = 0; x < count; ++x) {
141 draw_blob(canvas, fBlob, paint, clipRects[x]);
142 if (x == (count >> 1) - 1) {
143 canvas->translate(SkScalarFloorToScalar(bounds.width() + SkIntToScalar(25)),
144 -(x * SkScalarFloorToScalar(bounds.height() +
145 SkIntToScalar(25))));
146 } else {
147 canvas->translate(0, SkScalarFloorToScalar(bounds.height() + SkIntToScalar(25)));
148 }
149 }
150 }
151
152 private:
153 SkAutoTUnref<SkTypeface> fEmojiTypeface;
154 SkAutoTUnref<SkTypeface> fReallyBigATypeface;
155 const char* fEmojiText;
156 SkAutoTUnref<const SkTextBlob> fBlob;
157
158 static const int kWidth = 1250;
159 static const int kHeight = 700;
160
161 typedef GM INHERITED;
162 };
163
164 //////////////////////////////////////////////////////////////////////////////
165
166 DEF_GM( return SkNEW(MixedTextBlobsGM); )
167 }
168