skia2/samplecode/SampleFontCache.cpp
commit-bot@chromium.org 6485b0be74 Switch out random number generator for tests, benches, samples.
This change makes tests, benches and samples use the new SkMWCRandom PRNG. GMs will be saved for another time, as they'll require rebaselining.

R=reed@google.com, bsalomon@google.com

Author: jvanverth@google.com

Review URL: https://chromiumcodereview.appspot.com/23653018

git-svn-id: http://skia.googlecode.com/svn/trunk@11136 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-09-06 19:05:11 +00:00

142 lines
3.4 KiB
C++

/*
* 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];
SkMWCRandom 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];
SkMWCRandom 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 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], NULL, measure_proc, NULL);
SkASSERT(0 == status);
fBitmaps[i].setConfig(SkBitmap::kRGB_565_Config, 320, 240);
fBitmaps[i].allocPixels();
status = pthread_create(&fDThreads[i], NULL, 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(NULL);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new FontCacheView; }
static SkViewRegister reg(MyFactory);