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/*
* 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 "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 nullptr;
}
static void* draw_proc(void* context) {
SkBitmap* bm = (SkBitmap*)context;
SkCanvas canvas(*bm);
while (!gDone) {
call_draw(&canvas);
}
return nullptr;
}
class FontCacheView : public SampleView {
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;
status = pthread_create(&fMThreads[i], nullptr, measure_proc, nullptr);
SkASSERT(0 == status);
fBitmaps[i].allocPixels(SkImageInfo::Make(320, 240,
kRGB_565_SkColorType,
kOpaque_SkAlphaType));
status = pthread_create(&fDThreads[i], nullptr, draw_proc, &fBitmaps[i]);
SkASSERT(0 == status);
}
this->setBGColor(0xFFDDDDDD);
}
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);
}
virtual void onDrawContent(SkCanvas* 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(nullptr);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new FontCacheView; }
static SkViewRegister reg(MyFactory);
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