8898363b2e
git-svn-id: http://skia.googlecode.com/svn/trunk@134 2bbb7eff-a529-9590-31e7-b0007b416f81
158 lines
4.3 KiB
C++
158 lines
4.3 KiB
C++
#include "SampleCode.h"
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#include "SkView.h"
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#include "SkCanvas.h"
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#include "Sk64.h"
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#include "SkCornerPathEffect.h"
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#include "SkGradientShader.h"
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#include "SkGraphics.h"
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#include "SkImageDecoder.h"
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#include "SkKernel33MaskFilter.h"
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#include "SkPath.h"
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#include "SkRandom.h"
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#include "SkRegion.h"
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#include "SkShader.h"
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#include "SkUtils.h"
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#include "SkColorPriv.h"
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#include "SkColorFilter.h"
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#include "SkTime.h"
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#include "SkTypeface.h"
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#include "SkXfermode.h"
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#include "SkStream.h"
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#include "SkXMLParser.h"
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#include "SkColorPriv.h"
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#include "SkImageDecoder.h"
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static SkRandom gRand;
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static void test_chromium_9005() {
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SkBitmap bm;
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bm.setConfig(SkBitmap::kARGB_8888_Config, 800, 600);
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bm.allocPixels();
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SkCanvas canvas(bm);
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SkPoint pt0 = { SkFloatToScalar(799.33374f), SkFloatToScalar(1.2360189f) };
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SkPoint pt1 = { SkFloatToScalar(808.49969f), SkFloatToScalar(-7.4338055f) };
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SkPaint paint;
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paint.setAntiAlias(true);
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canvas.drawLine(pt0.fX, pt0.fY, pt1.fX, pt1.fY, paint);
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}
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static void generate_pts(SkPoint pts[], int count, int w, int h) {
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for (int i = 0; i < count; i++) {
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pts[i].set(gRand.nextUScalar1() * 3 * w - SkIntToScalar(w),
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gRand.nextUScalar1() * 3 * h - SkIntToScalar(h));
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}
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}
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static bool check_zeros(const SkPMColor pixels[], int count, int skip) {
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for (int i = 0; i < count; i++) {
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if (*pixels) {
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return false;
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}
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pixels += skip;
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}
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return true;
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}
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static bool check_bitmap_margin(const SkBitmap& bm, int margin) {
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size_t rb = bm.rowBytes();
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for (int i = 0; i < margin; i++) {
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if (!check_zeros(bm.getAddr32(0, i), bm.width(), 1)) {
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return false;
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}
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int bottom = bm.height() - i - 1;
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if (!check_zeros(bm.getAddr32(0, bottom), bm.width(), 1)) {
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return false;
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}
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// left column
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if (!check_zeros(bm.getAddr32(i, 0), bm.height(), rb >> 2)) {
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return false;
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}
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int right = bm.width() - margin + i;
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if (!check_zeros(bm.getAddr32(right, 0), bm.height(), rb >> 2)) {
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return false;
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}
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}
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return true;
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}
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#define WIDTH 80
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#define HEIGHT 60
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#define MARGIN 4
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class HairlineView : public SkView {
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public:
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HairlineView() {}
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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, "Hairines");
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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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void show_bitmaps(SkCanvas* canvas, const SkBitmap& b0, const SkBitmap& b1,
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const SkIRect& inset) {
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canvas->drawBitmap(b0, 0, 0, NULL);
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canvas->drawBitmap(b1, SkIntToScalar(b0.width()), 0, NULL);
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}
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void drawBG(SkCanvas* canvas) {
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// canvas->drawColor(0xFFDDDDDD);
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canvas->drawColor(SK_ColorWHITE);
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// canvas->drawColor(SK_ColorBLACK);
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}
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virtual void onDraw(SkCanvas* canvas) {
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this->drawBG(canvas);
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if (true) {
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test_chromium_9005();
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}
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SkBitmap bm, bm2;
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bm.setConfig(SkBitmap::kARGB_8888_Config,
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WIDTH + MARGIN*2,
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HEIGHT + MARGIN*2);
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bm.allocPixels();
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// this will erase our margin, which we want to always stay 0
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bm.eraseColor(0);
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bm2.setConfig(SkBitmap::kARGB_8888_Config, WIDTH, HEIGHT,
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bm.rowBytes());
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bm2.setPixels(bm.getAddr32(MARGIN, MARGIN));
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SkCanvas c2(bm2);
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SkPaint paint;
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paint.setAntiAlias(true);
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for (int i = 0; i < 10000; i++) {
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SkPoint pts[2];
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generate_pts(pts, 2, WIDTH, HEIGHT);
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bm2.eraseColor(0);
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c2.drawLine(pts[0].fX, pts[0].fY, pts[1].fX, pts[1].fY, paint);
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if (!check_bitmap_margin(bm, MARGIN)) {
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SkDebugf("---- hairline failure (%g %g) (%g %g)\n",
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pts[0].fX, pts[0].fY, pts[1].fX, pts[1].fY);
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break;
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}
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}
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this->inval(NULL);
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}
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private:
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typedef SkView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new HairlineView; }
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static SkViewRegister reg(MyFactory);
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