d94697c21a
BUG= Review URL: https://codereview.chromium.org/19789016 git-svn-id: http://skia.googlecode.com/svn/trunk@10305 2bbb7eff-a529-9590-31e7-b0007b416f81
103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
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/*
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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 "SampleCode.h"
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#include "SkView.h"
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#include "SkCanvas.h"
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#include "SkDevice.h"
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#include "SkPaint.h"
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#include "SkShader.h"
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static SkBitmap createBitmap(int n) {
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SkBitmap bitmap;
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bitmap.setConfig(SkBitmap::kARGB_8888_Config, n, n);
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bitmap.allocPixels();
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bitmap.eraseColor(SK_ColorTRANSPARENT);
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SkCanvas canvas(bitmap);
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SkRect r;
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r.set(0, 0, SkIntToScalar(n), SkIntToScalar(n));
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(SK_ColorRED);
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canvas.drawOval(r, paint);
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paint.setColor(SK_ColorBLUE);
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paint.setStrokeWidth(SkIntToScalar(n)/15);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas.drawLine(0, 0, r.fRight, r.fBottom, paint);
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canvas.drawLine(0, r.fBottom, r.fRight, 0, paint);
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return bitmap;
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}
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class MipMapView : public SampleView {
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SkBitmap fBitmap;
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enum {
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N = 64
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};
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bool fOnce;
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public:
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MipMapView() {
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fOnce = false;
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}
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void init() {
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if (fOnce) {
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return;
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}
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fOnce = true;
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fBitmap = createBitmap(N);
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fWidth = N;
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}
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protected:
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt) {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "MipMaps");
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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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this->init();
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static const SkPaint::FilterLevel gLevel[] = {
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SkPaint::kNone_FilterLevel,
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SkPaint::kLow_FilterLevel,
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SkPaint::kMedium_FilterLevel,
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SkPaint::kHigh_FilterLevel,
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};
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SkPaint paint;
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for (size_t i = 0; i < SK_ARRAY_COUNT(gLevel); ++i) {
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SkScalar x = 10 + i * 100;
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SkScalar y = 10;
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paint.setFilterLevel(gLevel[i]);
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canvas->drawBitmap(fBitmap, x, y, &paint);
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}
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this->inval(NULL);
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}
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private:
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int fWidth;
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typedef SampleView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new MipMapView; }
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static SkViewRegister reg(MyFactory);
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