blob: a021dbd6fbc1b85e778110d356c3431159b9328a [file] [log] [blame]
epoger@google.comec3ed6a2011-07-28 14:26:00 +00001
2/*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
reed@android.com0bb6d062010-05-17 14:50:04 +00008#include "SampleCode.h"
9#include "SkView.h"
10#include "SkBlurMaskFilter.h"
11#include "SkCanvas.h"
reed@google.com021b4052011-09-28 15:24:00 +000012#include "SkColorShader.h"
reed@android.com0bb6d062010-05-17 14:50:04 +000013#include "SkGradientShader.h"
14#include "SkGraphics.h"
15#include "SkImageDecoder.h"
16#include "SkPath.h"
17#include "SkRandom.h"
18#include "SkRegion.h"
19#include "SkShader.h"
20#include "SkUtils.h"
21#include "SkXfermode.h"
22#include "SkColorPriv.h"
23#include "SkColorFilter.h"
24#include "SkTime.h"
25#include "SkTypeface.h"
26#include "SkTextBox.h"
27#include "SkOSFile.h"
28#include "SkStream.h"
29#include "SkKey.h"
30
reed@google.com021b4052011-09-28 15:24:00 +000031extern void skia_set_text_gamma(float blackGamma, float whiteGamma);
32
bungeman@google.comb49d9892012-08-16 17:35:58 +000033#if defined(SK_BUILD_FOR_WIN) && defined(SK_FONTHOST_WIN_GDI)
reed@google.comb6524272011-03-01 15:18:14 +000034extern SkTypeface* SkCreateTypefaceFromLOGFONT(const LOGFONT&);
reed@google.comd6f5a812011-03-02 14:34:11 +000035#endif
reed@google.comb6524272011-03-01 15:18:14 +000036
reed@google.comd6f5a812011-03-02 14:34:11 +000037static const char gText[] =
rmistry@google.comae933ce2012-08-23 18:19:56 +000038 "When in the Course of human events it becomes necessary for one people "
39 "to dissolve the political bands which have connected them with another "
40 "and to assume among the powers of the earth, the separate and equal "
41 "station to which the Laws of Nature and of Nature's God entitle them, "
42 "a decent respect to the opinions of mankind requires that they should "
43 "declare the causes which impel them to the separation.";
reed@android.com0bb6d062010-05-17 14:50:04 +000044
reed@google.com17fb3872011-05-04 14:31:07 +000045class TextBoxView : public SampleView {
reed@google.comd6f5a812011-03-02 14:34:11 +000046public:
rmistry@google.comae933ce2012-08-23 18:19:56 +000047 TextBoxView() {
bungeman@google.comb49d9892012-08-16 17:35:58 +000048#if defined(SK_BUILD_FOR_WIN) && defined(SK_FONTHOST_WIN_GDI)
rmistry@google.comae933ce2012-08-23 18:19:56 +000049 LOGFONT lf;
50 sk_bzero(&lf, sizeof(lf));
51 lf.lfHeight = 9;
52 SkTypeface* tf0 = SkCreateTypefaceFromLOGFONT(lf);
53 lf.lfHeight = 12;
54 SkTypeface* tf1 = SkCreateTypefaceFromLOGFONT(lf);
55 // we assert that different sizes should not affect which face we get
56 SkASSERT(tf0 == tf1);
57 tf0->unref();
58 tf1->unref();
reed@google.comd6f5a812011-03-02 14:34:11 +000059#endif
reed@google.com021b4052011-09-28 15:24:00 +000060 }
reed@google.comd6f5a812011-03-02 14:34:11 +000061
reed@android.com0bb6d062010-05-17 14:50:04 +000062protected:
63 // overrides from SkEventSink
64 virtual bool onQuery(SkEvent* evt) {
65 if (SampleCode::TitleQ(*evt)) {
tfarina@chromium.org45369a32012-09-30 11:30:01 +000066 SampleCode::TitleR(evt, "TextBox");
reed@android.com0bb6d062010-05-17 14:50:04 +000067 return true;
68 }
69 return this->INHERITED::onQuery(evt);
70 }
reed@google.comd6f5a812011-03-02 14:34:11 +000071
reed@google.com021b4052011-09-28 15:24:00 +000072 void drawTest(SkCanvas* canvas, SkScalar w, SkScalar h, SkColor fg, SkColor bg) {
73 SkAutoCanvasRestore acr(canvas, true);
74
75 canvas->clipRect(SkRect::MakeWH(w, h));
76 canvas->drawColor(bg);
rmistry@google.comae933ce2012-08-23 18:19:56 +000077 SkScalar margin = 20;
reed@android.com0bb6d062010-05-17 14:50:04 +000078 SkTextBox tbox;
rmistry@google.comae933ce2012-08-23 18:19:56 +000079 tbox.setMode(SkTextBox::kLineBreak_Mode);
80 tbox.setBox(margin, margin,
81 w - margin, h - margin);
82 tbox.setSpacing(SkIntToScalar(3)/3, 0);
reed@android.com0bb6d062010-05-17 14:50:04 +000083
rmistry@google.comae933ce2012-08-23 18:19:56 +000084 SkPaint paint;
85 paint.setAntiAlias(true);
reed@google.com261b8e22011-04-14 17:53:24 +000086 paint.setLCDRenderText(true);
reed@google.com021b4052011-09-28 15:24:00 +000087 paint.setColor(fg);
rmistry@google.comae933ce2012-08-23 18:19:56 +000088 tbox.setText(gText, strlen(gText), paint);
reed@android.com0bb6d062010-05-17 14:50:04 +000089
rmistry@google.comae933ce2012-08-23 18:19:56 +000090 for (int i = 9; i < 24; i += 2) {
91 paint.setTextSize(SkIntToScalar(i));
92 tbox.draw(canvas);
93 canvas->translate(0, tbox.getTextHeight() + paint.getFontSpacing());
94 }
reed@android.com0bb6d062010-05-17 14:50:04 +000095 }
reed@google.comd6f5a812011-03-02 14:34:11 +000096
reed@google.com021b4052011-09-28 15:24:00 +000097 virtual void onDrawContent(SkCanvas* canvas) {
98 SkScalar width = this->width() / 3;
99 drawTest(canvas, width, this->height(), SK_ColorBLACK, SK_ColorWHITE);
100 canvas->translate(width, 0);
101 drawTest(canvas, width, this->height(), SK_ColorWHITE, SK_ColorBLACK);
102 canvas->translate(width, 0);
103 drawTest(canvas, width, this->height()/2, SK_ColorGRAY, SK_ColorWHITE);
104 canvas->translate(0, this->height()/2);
105 drawTest(canvas, width, this->height()/2, SK_ColorGRAY, SK_ColorBLACK);
106 }
107
reed@android.com0bb6d062010-05-17 14:50:04 +0000108private:
reed@google.com4ee14332011-09-08 13:37:07 +0000109 typedef SampleView INHERITED;
reed@android.com0bb6d062010-05-17 14:50:04 +0000110};
111
112//////////////////////////////////////////////////////////////////////////////
113
114static SkView* MyFactory() { return new TextBoxView; }
115static SkViewRegister reg(MyFactory);
116