51e15a69ce
Change-Id: I4b6259590fa0693ee0522b4999a1c0fe250b173d Reviewed-on: https://skia-review.googlesource.com/c/skia/+/212504 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Ben Wagner <bungeman@google.com>
140 lines
3.5 KiB
C++
140 lines
3.5 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/core/SkCanvas.h"
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#include "include/core/SkGraphics.h"
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#include "include/utils/SkRandom.h"
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#include "samplecode/Sample.h"
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#include <pthread.h>
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static void call_measure() {
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SkPaint paint;
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uint16_t text[32];
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SkRandom rand;
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paint.setAntiAlias(true);
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paint.setTextEncoding(SkTextEncoding::kUTF16);
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for (int j = 0; j < SK_ARRAY_COUNT(text); j++)
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text[j] = (uint16_t)((rand.nextU() & 0xFF) + 32);
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for (int i = 9; i < 36; i++) {
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SkFontMetrics m;
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paint.setTextSize(SkIntToScalar(i));
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paint.getFontMetrics(&m);
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paint.measureText(text, sizeof(text));
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}
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}
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static void call_draw(SkCanvas* canvas) {
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SkPaint paint;
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uint16_t text[32];
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SkRandom rand;
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paint.setAntiAlias(true);
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paint.setTextEncoding(SkTextEncoding::kUTF16);
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for (int j = 0; j < SK_ARRAY_COUNT(text); j++)
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text[j] = (uint16_t)((rand.nextU() & 0xFF) + 32);
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SkScalar x = SkIntToScalar(10);
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SkScalar y = SkIntToScalar(20);
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canvas->drawColor(SK_ColorWHITE);
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for (int i = 9; i < 36; i++)
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{
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SkFontMetrics m;
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paint.setTextSize(SkIntToScalar(i));
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paint.getFontMetrics(&m);
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canvas->drawText(text, sizeof(text), x, y, paint);
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y += m.fDescent - m.fAscent;
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}
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}
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static bool gDone;
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static void* measure_proc(void* context) {
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while (!gDone) {
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call_measure();
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}
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return nullptr;
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}
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static void* draw_proc(void* context) {
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SkBitmap* bm = (SkBitmap*)context;
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SkCanvas canvas(*bm);
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while (!gDone) {
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call_draw(&canvas);
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}
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return nullptr;
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}
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class FontCacheView : public Sample {
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public:
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enum { N = 4 };
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pthread_t fMThreads[N];
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pthread_t fDThreads[N];
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SkBitmap fBitmaps[N];
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FontCacheView() {
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gDone = false;
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for (int i = 0; i < N; i++) {
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int status;
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status = pthread_create(&fMThreads[i], nullptr, measure_proc, nullptr);
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SkASSERT(0 == status);
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fBitmaps[i].allocPixels(SkImageInfo::Make(320, 240,
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kRGB_565_SkColorType,
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kOpaque_SkAlphaType));
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status = pthread_create(&fDThreads[i], nullptr, draw_proc, &fBitmaps[i]);
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SkASSERT(0 == status);
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}
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this->setBGColor(0xFFDDDDDD);
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}
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virtual ~FontCacheView() {
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gDone = true;
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for (int i = 0; i < N; i++) {
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void* ret;
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int status = pthread_join(fMThreads[i], &ret);
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SkASSERT(0 == status);
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status = pthread_join(fDThreads[i], &ret);
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SkASSERT(0 == status);
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}
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}
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protected:
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virtual bool onQuery(Sample::Event* evt) {
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if (Sample::TitleQ(*evt)) {
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Sample::TitleR(evt, "FontCache");
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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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virtual void onDrawContent(SkCanvas* canvas) {
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SkScalar x = 0;
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SkScalar y = 0;
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for (int i = 0; i < N; i++) {
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canvas->drawBitmap(fBitmaps[i], x, y);
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x += SkIntToScalar(fBitmaps[i].width());
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}
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this->inval(nullptr);
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}
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private:
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typedef Sample INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static Sample* MyFactory() { return new FontCacheView; }
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static SampleRegister reg(MyFactory);
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