102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
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#include "SampleCode.h"
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#include "SkView.h"
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#include "SkBlurMaskFilter.h"
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#include "SkCanvas.h"
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#include "SkGradientShader.h"
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#include "SkGraphics.h"
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#include "SkImageDecoder.h"
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#include "SkPath.h"
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#include "SkRandom.h"
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#include "SkRegion.h"
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#include "SkShader.h"
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#include "SkUtils.h"
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#include "SkXfermode.h"
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#include "SkColorPriv.h"
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#include "SkColorFilter.h"
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#include "SkTime.h"
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#include "SkTypeface.h"
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#include "SkTextBox.h"
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#include "SkOSFile.h"
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#include "SkStream.h"
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#include "SkKey.h"
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static const char gText[] =
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"When in the Course of human events it becomes necessary for one people "
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"to dissolve the political bands which have connected them with another "
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"and to assume among the powers of the earth, the separate and equal "
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"station to which the Laws of Nature and of Nature's God entitle them, "
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"a decent respect to the opinions of mankind requires that they should "
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"declare the causes which impel them to the separation.";
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class TextBoxView : public SkView {
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public:
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TextBoxView() {
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fTextSize = SkIntToScalar(32);
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}
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protected:
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt) {
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if (SampleCode::TitleQ(*evt)) {
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SkString str("TextBox");
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SampleCode::TitleR(evt, str.c_str());
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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void drawBG(SkCanvas* canvas) {
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canvas->drawColor(SK_ColorWHITE);
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}
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virtual void onDraw(SkCanvas* canvas) {
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this->drawBG(canvas);
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SkScalar margin = 20;
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SkTextBox tbox;
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tbox.setMode(SkTextBox::kLineBreak_Mode);
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tbox.setBox(margin, margin,
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this->width() - margin, this->height() - margin);
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tbox.setSpacing(SkIntToScalar(3)/3, 0);
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setTextSize(fTextSize);
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tbox.draw(canvas, gText, strlen(gText), paint);
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}
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virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
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return new Click(this);
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}
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virtual bool onClick(Click* click) {
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const SkScalar delta = SkIntToScalar(3);
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if (click->fState == Click::kUp_State) {
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if (click->fCurr.fY < this->height()/2) {
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fTextSize += delta;
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this->inval(NULL);
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return true;
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} else {
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if (fTextSize > delta) {
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fTextSize -= delta;
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this->inval(NULL);
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return true;
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}
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}
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}
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return this->INHERITED::onClick(click);
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}
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private:
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SkScalar fTextSize;
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typedef SkView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new TextBoxView; }
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static SkViewRegister reg(MyFactory);
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