skia2/samplecode/SampleTextBox.cpp

113 lines
3.6 KiB
C++
Raw Normal View History

Automatic update of all copyright notices to reflect new license terms. I have manually examined all of these diffs and restored a few files that seem to require manual adjustment. The following files still need to be modified manually, in a separate CL: android_sample/SampleApp/AndroidManifest.xml android_sample/SampleApp/res/layout/layout.xml android_sample/SampleApp/res/menu/sample.xml android_sample/SampleApp/res/values/strings.xml android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java experimental/CiCarbonSampleMain.c experimental/CocoaDebugger/main.m experimental/FileReaderApp/main.m experimental/SimpleCocoaApp/main.m experimental/iOSSampleApp/Shared/SkAlertPrompt.h experimental/iOSSampleApp/Shared/SkAlertPrompt.m experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig gpu/src/android/GrGLDefaultInterface_android.cpp gyp/common.gypi gyp_skia include/ports/SkHarfBuzzFont.h include/views/SkOSWindow_wxwidgets.h make.bat make.py src/opts/memset.arm.S src/opts/memset16_neon.S src/opts/memset32_neon.S src/opts/opts_check_arm.cpp src/ports/SkDebug_brew.cpp src/ports/SkMemory_brew.cpp src/ports/SkOSFile_brew.cpp src/ports/SkXMLParser_empty.cpp src/utils/ios/SkImageDecoder_iOS.mm src/utils/ios/SkOSFile_iOS.mm src/utils/ios/SkStream_NSData.mm tests/FillPathTest.cpp Review URL: http://codereview.appspot.com/4816058 git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-07-28 14:26:00 +00:00
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SampleCode.h"
#include "SkView.h"
#include "SkBlurMaskFilter.h"
#include "SkCanvas.h"
#include "SkColorShader.h"
#include "SkGradientShader.h"
#include "SkGraphics.h"
#include "SkPath.h"
#include "SkRandom.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkTime.h"
#include "SkTypeface.h"
#include "SkTextBox.h"
#include "SkOSFile.h"
#include "SkStream.h"
#include "SkKey.h"
extern void skia_set_text_gamma(float blackGamma, float whiteGamma);
#if defined(SK_BUILD_FOR_WIN) && defined(SK_FONTHOST_WIN_GDI)
extern SkTypeface* SkCreateTypefaceFromLOGFONT(const LOGFONT&);
#endif
static const char gText[] =
"When in the Course of human events it becomes necessary for one people "
"to dissolve the political bands which have connected them with another "
"and to assume among the powers of the earth, the separate and equal "
"station to which the Laws of Nature and of Nature's God entitle them, "
"a decent respect to the opinions of mankind requires that they should "
"declare the causes which impel them to the separation.";
class TextBoxView : public SampleView {
public:
TextBoxView() {
#if defined(SK_BUILD_FOR_WIN) && defined(SK_FONTHOST_WIN_GDI)
LOGFONT lf;
sk_bzero(&lf, sizeof(lf));
lf.lfHeight = 9;
SkTypeface* tf0 = SkCreateTypefaceFromLOGFONT(lf);
lf.lfHeight = 12;
SkTypeface* tf1 = SkCreateTypefaceFromLOGFONT(lf);
// we assert that different sizes should not affect which face we get
SkASSERT(tf0 == tf1);
tf0->unref();
tf1->unref();
#endif
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "TextBox");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawTest(SkCanvas* canvas, SkScalar w, SkScalar h, SkColor fg, SkColor bg) {
SkAutoCanvasRestore acr(canvas, true);
canvas->clipRect(SkRect::MakeWH(w, h));
canvas->drawColor(bg);
SkScalar margin = 20;
SkTextBox tbox;
tbox.setMode(SkTextBox::kLineBreak_Mode);
tbox.setBox(margin, margin,
w - margin, h - margin);
tbox.setSpacing(SkIntToScalar(3)/3, 0);
SkPaint paint;
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
paint.setColor(fg);
tbox.setText(gText, strlen(gText), paint);
for (int i = 9; i < 24; i += 2) {
paint.setTextSize(SkIntToScalar(i));
tbox.draw(canvas);
canvas->translate(0, tbox.getTextHeight() + paint.getFontSpacing());
}
}
virtual void onDrawContent(SkCanvas* canvas) {
SkScalar width = this->width() / 3;
drawTest(canvas, width, this->height(), SK_ColorBLACK, SK_ColorWHITE);
canvas->translate(width, 0);
drawTest(canvas, width, this->height(), SK_ColorWHITE, SK_ColorBLACK);
canvas->translate(width, 0);
drawTest(canvas, width, this->height()/2, SK_ColorGRAY, SK_ColorWHITE);
canvas->translate(0, this->height()/2);
drawTest(canvas, width, this->height()/2, SK_ColorGRAY, SK_ColorBLACK);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new TextBoxView; }
static SkViewRegister reg(MyFactory);