1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* Copyright 2013 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 "Resources.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
#include "SkStream.h"
#include "SkTextBlob.h"
#include "SkTypeface.h"
namespace skiagm {
static void draw_blob(SkCanvas* canvas, const SkTextBlob* blob, const SkPaint& skPaint,
const SkRect& clipRect) {
SkPaint clipHairline;
clipHairline.setColor(SK_ColorWHITE);
clipHairline.setStyle(SkPaint::kStroke_Style);
SkPaint paint(skPaint);
canvas->save();
canvas->drawRect(clipRect, clipHairline);
paint.setAlpha(0x20);
canvas->drawTextBlob(blob, 0, 0, paint);
canvas->clipRect(clipRect);
paint.setAlpha(0xFF);
canvas->drawTextBlob(blob, 0, 0, paint);
canvas->restore();
}
class MixedTextBlobsGM : public GM {
public:
MixedTextBlobsGM() { }
protected:
void onOnceBeforeDraw() override {
fEmojiTypeface = sk_tool_utils::emoji_typeface();
fEmojiText = sk_tool_utils::emoji_sample_text();
fReallyBigATypeface = MakeResourceAsTypeface("/fonts/ReallyBigA.ttf");
SkTextBlobBuilder builder;
// make textblob
// Text so large we draw as paths
SkPaint paint;
paint.setTextSize(385);
const char* text = "O";
sk_tool_utils::set_portable_typeface(&paint);
SkRect bounds;
paint.measureText(text, strlen(text), &bounds);
SkScalar yOffset = bounds.height();
sk_tool_utils::add_to_text_blob(&builder, text, paint, 10, yOffset);
SkScalar corruptedAx = bounds.width();
SkScalar corruptedAy = yOffset;
const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
SkScalar xOffset = boundsHalfWidth;
yOffset = boundsHalfHeight;
// LCD
paint.setTextSize(32);
text = "LCD!!!!!";
paint.setAntiAlias(true);
paint.setSubpixelText(true);
paint.setLCDRenderText(true);
paint.measureText(text, strlen(text), &bounds);
sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.25f,
yOffset - bounds.height() * 0.5f);
yOffset += bounds.height();
// color emoji
if (fEmojiTypeface) {
paint.setAntiAlias(false);
paint.setSubpixelText(false);
paint.setLCDRenderText(false);
paint.setTypeface(fEmojiTypeface);
text = fEmojiText;
paint.measureText(text, strlen(text), &bounds);
sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.3f,
yOffset);
}
// Corrupted font
paint.setTextSize(12);
text = "aA";
paint.setTypeface(fReallyBigATypeface);
sk_tool_utils::add_to_text_blob(&builder, text, paint, corruptedAx, corruptedAy);
fBlob.reset(builder.build());
}
SkString onShortName() override {
SkString name("mixedtextblobs");
name.append(sk_tool_utils::platform_os_emoji());
return name;
}
SkISize onISize() override {
return SkISize::Make(kWidth, kHeight);
}
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
SkPaint paint;
// setup work needed to draw text with different clips
paint.setColor(SK_ColorBLACK);
canvas->translate(10, 40);
paint.setTextSize(40);
// compute the bounds of the text and setup some clips
SkRect bounds = fBlob->bounds();
const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
const SkScalar boundsQuarterWidth = boundsHalfWidth * SK_ScalarHalf;
const SkScalar boundsQuarterHeight = boundsHalfHeight * SK_ScalarHalf;
SkRect upperLeftClip = SkRect::MakeXYWH(bounds.left(), bounds.top(),
boundsHalfWidth, boundsHalfHeight);
SkRect lowerRightClip = SkRect::MakeXYWH(bounds.centerX(), bounds.centerY(),
boundsHalfWidth, boundsHalfHeight);
SkRect interiorClip = bounds;
interiorClip.inset(boundsQuarterWidth, boundsQuarterHeight);
const SkRect clipRects[] = { bounds, upperLeftClip, lowerRightClip, interiorClip};
size_t count = sizeof(clipRects) / sizeof(SkRect);
for (size_t x = 0; x < count; ++x) {
draw_blob(canvas, fBlob, paint, clipRects[x]);
if (x == (count >> 1) - 1) {
canvas->translate(SkScalarFloorToScalar(bounds.width() + SkIntToScalar(25)),
-(x * SkScalarFloorToScalar(bounds.height() +
SkIntToScalar(25))));
} else {
canvas->translate(0, SkScalarFloorToScalar(bounds.height() + SkIntToScalar(25)));
}
}
}
private:
sk_sp<SkTypeface> fEmojiTypeface;
sk_sp<SkTypeface> fReallyBigATypeface;
const char* fEmojiText;
SkAutoTUnref<const SkTextBlob> fBlob;
static const int kWidth = 1250;
static const int kHeight = 700;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new MixedTextBlobsGM;)
}
|
