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#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkGraphics.h"
#include "SkRandom.h"
#include <pthread.h>
static void call_measure()
{
SkPaint paint;
uint16_t text[32];
SkRandom rand;
paint.setAntiAlias(true);
paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
for (int j = 0; j < SK_ARRAY_COUNT(text); j++)
text[j] = (uint16_t)((rand.nextU() & 0xFF) + 32);
for (int i = 9; i < 36; i++)
{
SkPaint::FontMetrics m;
paint.setTextSize(SkIntToScalar(i));
paint.getFontMetrics(&m);
paint.measureText(text, sizeof(text));
}
}
static void call_draw(SkCanvas* canvas)
{
SkPaint paint;
uint16_t text[32];
SkRandom rand;
paint.setAntiAlias(true);
paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
for (int j = 0; j < SK_ARRAY_COUNT(text); j++)
text[j] = (uint16_t)((rand.nextU() & 0xFF) + 32);
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(20);
canvas->drawColor(SK_ColorWHITE);
for (int i = 9; i < 36; i++)
{
SkPaint::FontMetrics m;
paint.setTextSize(SkIntToScalar(i));
paint.getFontMetrics(&m);
canvas->drawText(text, sizeof(text), x, y, paint);
y += m.fDescent - m.fAscent;
}
}
static bool gDone;
static void* measure_proc(void* context)
{
while (!gDone)
{
call_measure();
}
return NULL;
}
static void* draw_proc(void* context)
{
SkBitmap* bm = (SkBitmap*)context;
SkCanvas canvas(*bm);
while (!gDone)
{
call_draw(&canvas);
}
return NULL;
}
class FontCacheView : public SkView {
public:
enum { N = 4 };
pthread_t fMThreads[N];
pthread_t fDThreads[N];
SkBitmap fBitmaps[N];
FontCacheView()
{
gDone = false;
for (int i = 0; i < N; i++)
{
int status;
pthread_attr_t attr;
status = pthread_attr_init(&attr);
SkASSERT(0 == status);
status = pthread_create(&fMThreads[i], &attr, measure_proc, NULL);
SkASSERT(0 == status);
fBitmaps[i].setConfig(SkBitmap::kRGB_565_Config, 320, 240);
fBitmaps[i].allocPixels();
status = pthread_create(&fDThreads[i], &attr, draw_proc, &fBitmaps[i]);
SkASSERT(0 == status);
}
}
virtual ~FontCacheView()
{
gDone = true;
for (int i = 0; i < N; i++)
{
void* ret;
int status = pthread_join(fMThreads[i], &ret);
SkASSERT(0 == status);
status = pthread_join(fDThreads[i], &ret);
SkASSERT(0 == status);
}
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt)
{
if (SampleCode::TitleQ(*evt))
{
SampleCode::TitleR(evt, "FontCache");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawBG(SkCanvas* canvas)
{
canvas->drawColor(0xFFDDDDDD);
// canvas->drawColor(SK_ColorWHITE);
}
virtual void onDraw(SkCanvas* canvas)
{
this->drawBG(canvas);
SkScalar x = 0;
SkScalar y = 0;
for (int i = 0; i < N; i++)
{
canvas->drawBitmap(fBitmaps[i], x, y);
x += SkIntToScalar(fBitmaps[i].width());
}
this->inval(NULL);
}
virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y)
{
this->inval(NULL);
return this->INHERITED::onFindClickHandler(x, y);
}
virtual bool onClick(Click* click)
{
return this->INHERITED::onClick(click);
}
private:
typedef SkView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new FontCacheView; }
static SkViewRegister reg(MyFactory);
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