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add tristate toggle 'l' for lcd text drawing

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git-svn-id: http://skia.googlecode.com/svn/trunk@925 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
reed@google.com 2011-03-11 20:08:25 +00:00
parent a639891117
commit f0b5f68807
1 changed files with 98 additions and 1 deletions
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99
samplecode/SampleApp.cpp
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@ -41,6 +41,84 @@ SkViewRegister::SkViewRegister(SkViewFactory fact) : fFact(fact) {
#define SK_USE_SHADERS
#endif
#if 1
#include <CoreFoundation/CoreFoundation.h>
#include <CoreFoundation/CFURLAccess.h>
static void testpdf() {
CFStringRef path = CFStringCreateWithCString(NULL, "/test.pdf",
kCFStringEncodingUTF8);
CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path,
kCFURLPOSIXPathStyle,
false);
CFRelease(path);
CGRect box = CGRectMake(0, 0, 8*72, 10*72);
CGContextRef cg = CGPDFContextCreateWithURL(url, &box, NULL);
CFRelease(url);
CGContextBeginPage(cg, &box);
CGRect r = CGRectMake(10, 10, 40 + 0.5, 50 + 0.5);
CGContextFillEllipseInRect(cg, r);
CGContextEndPage(cg);
CGContextRelease(cg);
if (false) {
SkBitmap bm;
bm.setConfig(SkBitmap::kA8_Config, 64, 64);
bm.allocPixels();
bm.eraseColor(0);
SkCanvas canvas(bm);
}
}
#endif
//////////////////////////////////////////////////////////////////////////////
#include "SkDrawFilter.h"
class LCDTextDrawFilter : public SkDrawFilter {
public:
enum Mode {
kNeutral_Mode,
kForceOn_Mode,
kForceOff_Mode
};
LCDTextDrawFilter(Mode mode) : fMode(mode) {}
virtual bool filter(SkCanvas*, SkPaint* paint, Type t) {
if (kText_Type == t && kNeutral_Mode != fMode) {
fPrevLCD = paint->isLCDRenderText();
paint->setLCDRenderText(kForceOn_Mode == fMode);
}
return true;
}
/** If filter() returned true, then restore() will be called to restore the
canvas/paint to their previous states
*/
virtual void restore(SkCanvas*, SkPaint* paint, Type t) {
if (kText_Type == t && kNeutral_Mode != fMode) {
paint->setLCDRenderText(fPrevLCD);
}
}
private:
Mode fMode;
bool fPrevLCD;
};
LCDTextDrawFilter::Mode cycle_lcdmode(LCDTextDrawFilter::Mode mode) {
static const LCDTextDrawFilter::Mode gCycle[] = {
/* kNeutral_Mode -> */ LCDTextDrawFilter::kForceOn_Mode,
/* kForceOn_Mode -> */ LCDTextDrawFilter::kForceOff_Mode,
/* kForceOff_Mode -> */ LCDTextDrawFilter::kNeutral_Mode
};
return gCycle[mode];
}
//////////////////////////////////////////////////////////////////////////////
static const char gCharEvtName[] = "SampleCode_Char_Event";
@ -180,6 +258,8 @@ private:
bool fScale;
bool fRequestGrabImage;
LCDTextDrawFilter::Mode fLCDMode;
int fScrollTestX, fScrollTestY;
bool make3DReady();
@ -251,7 +331,7 @@ SampleWindow::SampleWindow(void* hwnd) : INHERITED(hwnd) {
fRotate = false;
fScale = false;
fRequestGrabImage = false;
fLCDMode = LCDTextDrawFilter::kNeutral_Mode;
fScrollTestX = fScrollTestY = 0;
// this->setConfig(SkBitmap::kRGB_565_Config);
@ -268,6 +348,8 @@ SampleWindow::SampleWindow(void* hwnd) : INHERITED(hwnd) {
}
fCurrIndex = 0;
this->loadView(fSamples[fCurrIndex]());
testpdf();
}
SampleWindow::~SampleWindow() {
@ -512,9 +594,14 @@ void SampleWindow::beforeChild(SkView* child, SkCanvas* canvas) {
canvas->rotate(SkIntToScalar(30));
canvas->translate(-cx, -cy);
}
if (LCDTextDrawFilter::kNeutral_Mode != fLCDMode) {
canvas->setDrawFilter(new LCDTextDrawFilter(fLCDMode))->unref();
}
}
void SampleWindow::afterChild(SkView* child, SkCanvas* canvas) {
canvas->setDrawFilter(NULL);
}
static SkBitmap::Config gConfigCycle[] = {
@ -669,6 +756,11 @@ bool SampleWindow::onHandleChar(SkUnichar uni) {
fRequestGrabImage = true;
this->inval(NULL);
break;
case 'l':
fLCDMode = cycle_lcdmode(fLCDMode);
this->updateTitle();
this->inval(NULL);
break;
default:
break;
}
@ -799,6 +891,11 @@ void SampleWindow::updateTitle() {
if (fNClip) {
title.prepend("<C> ");
}
if (LCDTextDrawFilter::kForceOn_Mode == fLCDMode) {
title.prepend("LCD ");
} else if (LCDTextDrawFilter::kForceOff_Mode == fLCDMode) {
title.prepend("lcd ");
}
this->setTitle(title.c_str());
}