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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"
Mike Klein33d20552017-03-22 13:47:51 -04009#include "sk_tool_utils.h"
joshualitteef5b3e2015-04-03 08:07:26 -070010
11#include "Resources.h"
12#include "SkCanvas.h"
13#include "SkGradientShader.h"
14#include "SkStream.h"
15#include "SkTextBlob.h"
16#include "SkTypeface.h"
17
18namespace skiagm {
19
joshualitteef5b3e2015-04-03 08:07:26 -070020static void draw_blob(SkCanvas* canvas, const SkTextBlob* blob, const SkPaint& skPaint,
21 const SkRect& clipRect) {
22 SkPaint clipHairline;
23 clipHairline.setColor(SK_ColorWHITE);
24 clipHairline.setStyle(SkPaint::kStroke_Style);
25
26 SkPaint paint(skPaint);
27 canvas->save();
28 canvas->drawRect(clipRect, clipHairline);
29 paint.setAlpha(0x20);
30 canvas->drawTextBlob(blob, 0, 0, paint);
31 canvas->clipRect(clipRect);
32 paint.setAlpha(0xFF);
33 canvas->drawTextBlob(blob, 0, 0, paint);
34 canvas->restore();
35}
36
37class MixedTextBlobsGM : public GM {
38public:
39 MixedTextBlobsGM() { }
40
41protected:
42 void onOnceBeforeDraw() override {
bungeman13b9c952016-05-12 10:09:30 -070043 fEmojiTypeface = sk_tool_utils::emoji_typeface();
caryclarkc3dcb672015-07-21 12:27:36 -070044 fEmojiText = sk_tool_utils::emoji_sample_text();
Hal Canary53e5e7d2017-12-08 14:25:14 -050045 fReallyBigATypeface = MakeResourceAsTypeface("fonts/ReallyBigA.ttf");
joshualitteef5b3e2015-04-03 08:07:26 -070046
47 SkTextBlobBuilder builder;
48
49 // make textblob
50 // Text so large we draw as paths
51 SkPaint paint;
jvanverth34d72882015-06-22 08:08:09 -070052 paint.setTextSize(385);
joshualitteef5b3e2015-04-03 08:07:26 -070053 const char* text = "O";
caryclark1818acb2015-07-24 12:09:25 -070054 sk_tool_utils::set_portable_typeface(&paint);
joshualitteef5b3e2015-04-03 08:07:26 -070055
56 SkRect bounds;
57 paint.measureText(text, strlen(text), &bounds);
58
59 SkScalar yOffset = bounds.height();
joshualitt9e36c1a2015-04-14 12:17:27 -070060 sk_tool_utils::add_to_text_blob(&builder, text, paint, 10, yOffset);
joshualitteef5b3e2015-04-03 08:07:26 -070061 SkScalar corruptedAx = bounds.width();
62 SkScalar corruptedAy = yOffset;
63
64 const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
65 const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
66
67 SkScalar xOffset = boundsHalfWidth;
68 yOffset = boundsHalfHeight;
69
70 // LCD
71 paint.setTextSize(32);
72 text = "LCD!!!!!";
joshualitt20dac882015-07-24 13:16:24 -070073 paint.setAntiAlias(true);
joshualitteef5b3e2015-04-03 08:07:26 -070074 paint.setSubpixelText(true);
75 paint.setLCDRenderText(true);
76 paint.measureText(text, strlen(text), &bounds);
joshualitt9e36c1a2015-04-14 12:17:27 -070077 sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.25f,
78 yOffset - bounds.height() * 0.5f);
joshualitteef5b3e2015-04-03 08:07:26 -070079 yOffset += bounds.height();
80
81 // color emoji
caryclarkc3dcb672015-07-21 12:27:36 -070082 if (fEmojiTypeface) {
joshualitt20dac882015-07-24 13:16:24 -070083 paint.setAntiAlias(false);
caryclarkc3dcb672015-07-21 12:27:36 -070084 paint.setSubpixelText(false);
85 paint.setLCDRenderText(false);
86 paint.setTypeface(fEmojiTypeface);
87 text = fEmojiText;
88 paint.measureText(text, strlen(text), &bounds);
89 sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.3f,
90 yOffset);
91 }
joshualitteef5b3e2015-04-03 08:07:26 -070092
93 // Corrupted font
94 paint.setTextSize(12);
95 text = "aA";
96 paint.setTypeface(fReallyBigATypeface);
joshualitt9e36c1a2015-04-14 12:17:27 -070097 sk_tool_utils::add_to_text_blob(&builder, text, paint, corruptedAx, corruptedAy);
fmalita37283c22016-09-13 10:00:23 -070098 fBlob = builder.make();
joshualitteef5b3e2015-04-03 08:07:26 -070099 }
100
101 SkString onShortName() override {
Mike Kleinf436fbc2017-11-15 10:42:46 -0500102 return SkStringPrintf("mixedtextblobs%s",
103 sk_tool_utils::platform_font_manager());
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
Mike Kleind46dce32018-08-16 10:17:03 -0400112 canvas->drawColor(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) {
fmalita37283c22016-09-13 10:00:23 -0700141 draw_blob(canvas, fBlob.get(), paint, clipRects[x]);
joshualitteef5b3e2015-04-03 08:07:26 -0700142 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:
bungeman13b9c952016-05-12 10:09:30 -0700153 sk_sp<SkTypeface> fEmojiTypeface;
154 sk_sp<SkTypeface> fReallyBigATypeface;
joshualitteef5b3e2015-04-03 08:07:26 -0700155 const char* fEmojiText;
fmalita37283c22016-09-13 10:00:23 -0700156 sk_sp<SkTextBlob> fBlob;
joshualitteef5b3e2015-04-03 08:07:26 -0700157
mtkleindbfd7ab2016-09-01 11:24:54 -0700158 static constexpr int kWidth = 1250;
159 static constexpr int kHeight = 700;
joshualitteef5b3e2015-04-03 08:07:26 -0700160
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}