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epoger@google.comec3ed6a2011-07-28 14:26:00 +00001/*
2 * Copyright 2011 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 */
reed@google.combf0001d2014-01-13 14:53:55 +00007
reed@android.com8a1c16f2008-12-17 15:59:43 +00008#include "SampleCode.h"
9#include "SkView.h"
10#include "SkCanvas.h"
commit-bot@chromium.org8b0e8ac2014-01-30 18:58:24 +000011#include "SkReadBuffer.h"
12#include "SkWriteBuffer.h"
reed@android.com8a1c16f2008-12-17 15:59:43 +000013#include "SkGradientShader.h"
14#include "SkGraphics.h"
reed@android.com8a1c16f2008-12-17 15:59:43 +000015#include "SkPath.h"
16#include "SkRandom.h"
17#include "SkRegion.h"
18#include "SkShader.h"
19#include "SkUtils.h"
reed@android.com8a1c16f2008-12-17 15:59:43 +000020#include "SkColorPriv.h"
21#include "SkColorFilter.h"
22#include "SkTime.h"
23#include "SkTypeface.h"
24#include "SkXfermode.h"
25
26#include "SkStream.h"
reed@android.com8a1c16f2008-12-17 15:59:43 +000027
reed@android.com8a1c16f2008-12-17 15:59:43 +000028static const struct {
29 const char* fName;
30 uint32_t fFlags;
31 bool fFlushCache;
32} gHints[] = {
33 { "Linear", SkPaint::kLinearText_Flag, false },
34 { "Normal", 0, true },
35 { "Subpixel", SkPaint::kSubpixelText_Flag, true }
36};
37
commit-bot@chromium.orge003aec2014-05-12 13:35:55 +000038static void DrawTheText(SkCanvas* canvas, const char text[], size_t length, SkScalar x, SkScalar y,
39 const SkPaint& paint, SkScalar clickX) {
reed@android.com8a1c16f2008-12-17 15:59:43 +000040 SkPaint p(paint);
41
42#if 0
43 canvas->drawText(text, length, x, y, paint);
44#else
45 {
46 SkPoint pts[1000];
47 SkScalar xpos = x;
48 SkASSERT(length <= SK_ARRAY_COUNT(pts));
reed@google.com9e39bb32011-05-18 12:17:53 +000049 for (size_t i = 0; i < length; i++) {
reed@android.com8a1c16f2008-12-17 15:59:43 +000050 pts[i].set(xpos, y), xpos += paint.getTextSize();
reed@google.com9e39bb32011-05-18 12:17:53 +000051 }
reed@android.com8a1c16f2008-12-17 15:59:43 +000052 canvas->drawPosText(text, length, pts, paint);
53 }
54#endif
55
56 p.setSubpixelText(true);
57 x += SkIntToScalar(180);
58 canvas->drawText(text, length, x, y, p);
59
reed@android.com8a1c16f2008-12-17 15:59:43 +000060#ifdef SK_DEBUG
reed@google.com9e39bb32011-05-18 12:17:53 +000061 if (true) {
reed@android.com8a1c16f2008-12-17 15:59:43 +000062 p.setSubpixelText(false);
63 p.setLinearText(true);
64 x += SkIntToScalar(180);
65 canvas->drawText(text, length, x, y, p);
66 }
67#endif
68}
69
reed@google.com9e39bb32011-05-18 12:17:53 +000070class TextSpeedView : public SampleView {
reed@android.com8a1c16f2008-12-17 15:59:43 +000071public:
rmistry@google.comae933ce2012-08-23 18:19:56 +000072 TextSpeedView() {
reed@android.com8a1c16f2008-12-17 15:59:43 +000073 fHints = 0;
reed@android.com8a1c16f2008-12-17 15:59:43 +000074 fClickX = 0;
reed@android.com8a1c16f2008-12-17 15:59:43 +000075 }
reed@google.com82065d62011-02-07 15:30:46 +000076
reed@android.com8a1c16f2008-12-17 15:59:43 +000077protected:
78 // overrides from SkEventSink
mtklein36352bf2015-03-25 18:17:31 -070079 bool onQuery(SkEvent* evt) override {
reed@google.com9e39bb32011-05-18 12:17:53 +000080 if (SampleCode::TitleQ(*evt)) {
reed@android.com8a1c16f2008-12-17 15:59:43 +000081 SampleCode::TitleR(evt, "Text");
82 return true;
83 }
84 return this->INHERITED::onQuery(evt);
85 }
reed@google.com82065d62011-02-07 15:30:46 +000086
reed@google.com9e39bb32011-05-18 12:17:53 +000087 static void make_textstrip(SkBitmap* bm) {
commit-bot@chromium.orga8c18312014-02-17 02:55:57 +000088 bm->allocPixels(SkImageInfo::Make(200, 18, kRGB_565_SkColorType,
89 kOpaque_SkAlphaType));
reed@android.com8a1c16f2008-12-17 15:59:43 +000090 bm->eraseColor(SK_ColorWHITE);
reed@google.com82065d62011-02-07 15:30:46 +000091
reed@android.com8a1c16f2008-12-17 15:59:43 +000092 SkCanvas canvas(*bm);
93 SkPaint paint;
94 const char* s = "Lorem ipsum dolor sit amet, consectetuer adipiscing elit";
reed@google.com82065d62011-02-07 15:30:46 +000095
reed@android.com8a1c16f2008-12-17 15:59:43 +000096 paint.setFlags(paint.getFlags() | SkPaint::kAntiAlias_Flag
97 | SkPaint::kDevKernText_Flag);
98 paint.setTextSize(SkIntToScalar(14));
99 canvas.drawText(s, strlen(s), SkIntToScalar(8), SkIntToScalar(14), paint);
100 }
reed@google.com82065d62011-02-07 15:30:46 +0000101
commit-bot@chromium.orge0e7cfe2013-09-09 20:09:12 +0000102 static void fill_pts(SkPoint pts[], size_t n, SkRandom* rand) {
reed@android.com8a1c16f2008-12-17 15:59:43 +0000103 for (size_t i = 0; i < n; i++)
104 pts[i].set(rand->nextUScalar1() * 640, rand->nextUScalar1() * 480);
105 }
reed@google.com82065d62011-02-07 15:30:46 +0000106
mtklein36352bf2015-03-25 18:17:31 -0700107 void onDrawContent(SkCanvas* canvas) override {
reed@android.com8a1c16f2008-12-17 15:59:43 +0000108 SkAutoCanvasRestore restore(canvas, false);
109 {
110 SkRect r;
111 r.set(0, 0, SkIntToScalar(1000), SkIntToScalar(20));
halcanary96fcdcc2015-08-27 07:41:13 -0700112 // canvas->saveLayer(&r, nullptr, SkCanvas::kHasAlphaLayer_SaveFlag);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000113 }
114
115 SkPaint paint;
116// const uint16_t glyphs[] = { 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19 };
117 int index = fHints % SK_ARRAY_COUNT(gHints);
118 index = 1;
119// const char* style = gHints[index].fName;
reed@google.com82065d62011-02-07 15:30:46 +0000120
reed@android.com8a1c16f2008-12-17 15:59:43 +0000121// canvas->translate(0, SkIntToScalar(50));
122
123 // canvas->drawText(style, strlen(style), SkIntToScalar(20), SkIntToScalar(20), paint);
124
bungeman13b9c952016-05-12 10:09:30 -0700125 paint.setTypeface(SkTypeface::MakeFromFile("/skimages/samplefont.ttf"));
reed@android.com8a1c16f2008-12-17 15:59:43 +0000126 paint.setAntiAlias(true);
127 paint.setFlags(paint.getFlags() | gHints[index].fFlags);
reed@google.com82065d62011-02-07 15:30:46 +0000128
reed@android.com8a1c16f2008-12-17 15:59:43 +0000129 SkRect clip;
130 clip.set(SkIntToScalar(25), SkIntToScalar(34), SkIntToScalar(88), SkIntToScalar(155));
reed@google.com82065d62011-02-07 15:30:46 +0000131
reed@android.com8a1c16f2008-12-17 15:59:43 +0000132 const char* text = "Hamburgefons";
133 size_t length = strlen(text);
134
reed@google.com2f3dc9d2011-05-02 17:33:45 +0000135 SkScalar y = SkIntToScalar(0);
136 for (int i = 9; i <= 24; i++) {
137 paint.setTextSize(SkIntToScalar(i) /*+ (gRand.nextU() & 0xFFFF)*/);
reed@google.com9e39bb32011-05-18 12:17:53 +0000138 for (SkScalar dx = 0; dx <= SkIntToScalar(3)/4;
139 dx += SkIntToScalar(1) /* /4 */) {
reed@google.com2f3dc9d2011-05-02 17:33:45 +0000140 y += paint.getFontSpacing();
commit-bot@chromium.orge003aec2014-05-12 13:35:55 +0000141 DrawTheText(canvas, text, length, SkIntToScalar(20) + dx, y, paint, fClickX);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000142 }
143 }
reed@google.com2f3dc9d2011-05-02 17:33:45 +0000144 if (gHints[index].fFlushCache) {
145// SkGraphics::SetFontCacheUsed(0);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000146 }
147 }
reed@google.com82065d62011-02-07 15:30:46 +0000148
reed@google.com4d5c26d2013-01-08 16:17:50 +0000149 virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y,
mtklein36352bf2015-03-25 18:17:31 -0700150 unsigned modi) override {
reed@android.com8a1c16f2008-12-17 15:59:43 +0000151 fClickX = x;
halcanary96fcdcc2015-08-27 07:41:13 -0700152 this->inval(nullptr);
reed@google.com4d5c26d2013-01-08 16:17:50 +0000153 return this->INHERITED::onFindClickHandler(x, y, modi);
reed@android.com8a1c16f2008-12-17 15:59:43 +0000154 }
reed@google.com82065d62011-02-07 15:30:46 +0000155
mtklein36352bf2015-03-25 18:17:31 -0700156 bool onClick(Click* click) override {
reed@android.com8a1c16f2008-12-17 15:59:43 +0000157 return this->INHERITED::onClick(click);
158 }
reed@google.com82065d62011-02-07 15:30:46 +0000159
reed@android.com8a1c16f2008-12-17 15:59:43 +0000160private:
161 int fHints;
162 SkScalar fClickX;
reed@android.com8a1c16f2008-12-17 15:59:43 +0000163
reed@google.com9e39bb32011-05-18 12:17:53 +0000164 typedef SampleView INHERITED;
reed@android.com8a1c16f2008-12-17 15:59:43 +0000165};
166
167//////////////////////////////////////////////////////////////////////////////
168
169static SkView* MyFactory() { return new TextSpeedView; }
170static SkViewRegister reg(MyFactory);