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