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joshualitteef5b3e2015-04-03 08:07:26 -07001/*
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
17namespace skiagm {
18
joshualitteef5b3e2015-04-03 08:07:26 -070019static 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
36class MixedTextBlobsGM : public GM {
37public:
38 MixedTextBlobsGM() { }
39
40protected:
41 void onOnceBeforeDraw() override {
caryclark3b0f98e2015-07-23 11:52:01 -070042 sk_tool_utils::emoji_typeface(&fEmojiTypeface);
caryclarkc3dcb672015-07-21 12:27:36 -070043 fEmojiText = sk_tool_utils::emoji_sample_text();
bungeman3ffa1262015-04-30 17:12:58 -040044 fReallyBigATypeface.reset(GetResourceAsTypeface("/fonts/ReallyBigA.ttf"));
joshualitteef5b3e2015-04-03 08:07:26 -070045
46 SkTextBlobBuilder builder;
47
48 // make textblob
49 // Text so large we draw as paths
50 SkPaint paint;
jvanverth34d72882015-06-22 08:08:09 -070051 paint.setTextSize(385);
joshualitteef5b3e2015-04-03 08:07:26 -070052 const char* text = "O";
caryclark1818acb2015-07-24 12:09:25 -070053 sk_tool_utils::set_portable_typeface(&paint);
joshualitteef5b3e2015-04-03 08:07:26 -070054
55 SkRect bounds;
56 paint.measureText(text, strlen(text), &bounds);
57
58 SkScalar yOffset = bounds.height();
joshualitt9e36c1a2015-04-14 12:17:27 -070059 sk_tool_utils::add_to_text_blob(&builder, text, paint, 10, yOffset);
joshualitteef5b3e2015-04-03 08:07:26 -070060 SkScalar corruptedAx = bounds.width();
61 SkScalar corruptedAy = yOffset;
62
63 const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
64 const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
65
66 SkScalar xOffset = boundsHalfWidth;
67 yOffset = boundsHalfHeight;
68
69 // LCD
70 paint.setTextSize(32);
71 text = "LCD!!!!!";
joshualitt20dac882015-07-24 13:16:24 -070072 paint.setAntiAlias(true);
joshualitteef5b3e2015-04-03 08:07:26 -070073 paint.setSubpixelText(true);
74 paint.setLCDRenderText(true);
75 paint.measureText(text, strlen(text), &bounds);
joshualitt9e36c1a2015-04-14 12:17:27 -070076 sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.25f,
77 yOffset - bounds.height() * 0.5f);
joshualitteef5b3e2015-04-03 08:07:26 -070078 yOffset += bounds.height();
79
80 // color emoji
caryclarkc3dcb672015-07-21 12:27:36 -070081 if (fEmojiTypeface) {
joshualitt20dac882015-07-24 13:16:24 -070082 paint.setAntiAlias(false);
caryclarkc3dcb672015-07-21 12:27:36 -070083 paint.setSubpixelText(false);
84 paint.setLCDRenderText(false);
85 paint.setTypeface(fEmojiTypeface);
86 text = fEmojiText;
87 paint.measureText(text, strlen(text), &bounds);
88 sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.3f,
89 yOffset);
90 }
joshualitteef5b3e2015-04-03 08:07:26 -070091
92 // Corrupted font
93 paint.setTextSize(12);
94 text = "aA";
95 paint.setTypeface(fReallyBigATypeface);
joshualitt9e36c1a2015-04-14 12:17:27 -070096 sk_tool_utils::add_to_text_blob(&builder, text, paint, corruptedAx, corruptedAy);
joshualitteef5b3e2015-04-03 08:07:26 -070097 fBlob.reset(builder.build());
98 }
99
100 SkString onShortName() override {
caryclarkc3dcb672015-07-21 12:27:36 -0700101 SkString name("mixedtextblobs");
102 name.append(sk_tool_utils::platform_os_emoji());
103 return name;
joshualitteef5b3e2015-04-03 08:07:26 -0700104 }
105
106 SkISize onISize() override {
107 return SkISize::Make(kWidth, kHeight);
108 }
109
110 void onDraw(SkCanvas* canvas) override {
111
caryclarkc3dcb672015-07-21 12:27:36 -0700112 canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
joshualitteef5b3e2015-04-03 08:07:26 -0700113
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
152private:
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
halcanary385fe4d2015-08-26 13:07:48 -0700166DEF_GM(return new MixedTextBlobsGM;)
joshualitteef5b3e2015-04-03 08:07:26 -0700167}