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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#include "SkTileGrid.h"
#include "SkTileGridPicture.h"
#include "SkCanvas.h"
#include "SkDevice.h"
enum Tile {
kTopLeft_Tile = 0x1,
kTopRight_Tile = 0x2,
kBottomLeft_Tile = 0x4,
kBottomRight_Tile = 0x8,
kAll_Tile = kTopLeft_Tile | kTopRight_Tile | kBottomLeft_Tile | kBottomRight_Tile,
};
namespace {
class MockCanvas : public SkCanvas {
public:
MockCanvas(SkDevice* device) : SkCanvas(device)
{}
virtual void drawRect(const SkRect& rect, const SkPaint& paint)
{
// This capture occurs before quick reject.
fRects.push(rect);
}
SkTDArray<SkRect> fRects;
};
}
class TileGridTest {
public:
static void verifyTileHits(skiatest::Reporter* reporter, SkIRect rect, uint32_t tileMask) {
SkTileGrid grid(10, 10, 2, 2, NULL);
grid.insert(NULL, rect, false);
REPORTER_ASSERT(reporter, grid.tile(0,0).count() ==
((tileMask & kTopLeft_Tile)? 1 : 0));
REPORTER_ASSERT(reporter, grid.tile(1,0).count() ==
((tileMask & kTopRight_Tile)? 1 : 0));
REPORTER_ASSERT(reporter, grid.tile(0,1).count() ==
((tileMask & kBottomLeft_Tile)? 1 : 0));
REPORTER_ASSERT(reporter, grid.tile(1,1).count() ==
((tileMask & kBottomRight_Tile)? 1 : 0));
}
static void TestUnalignedQuery(skiatest::Reporter* reporter) {
// Use SkTileGridPicture to generate a SkTileGrid with a helper
SkTileGridPicture picture(10, 10, 20, 20);
SkRect rect1 = SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(8), SkIntToScalar(8));
SkRect rect2 = SkRect::MakeXYWH(SkIntToScalar(11), SkIntToScalar(11),
SkIntToScalar(1), SkIntToScalar(1));
SkCanvas* canvas = picture.beginRecording(20, 20, SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
SkPaint paint;
canvas->drawRect(rect1, paint);
canvas->drawRect(rect2, paint);
picture.endRecording();
SkBitmap store;
store.setConfig(SkBitmap::kARGB_8888_Config, 1, 1);
store.allocPixels();
// Test parts of top-left tile
{
SkDevice device(store);
MockCanvas mockCanvas(&device);
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
}
{
SkDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-7.99f), SkFloatToScalar(-7.99f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
}
// Corner overlap
{
SkDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-9.5f), SkFloatToScalar(-9.5f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 2 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[1]);
}
// Intersect bottom right tile, but does not overlap rect 2
{
SkDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-16.0f), SkFloatToScalar(-16.0f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
}
}
static void Test(skiatest::Reporter* reporter) {
// Out of bounds
verifyTileHits(reporter, SkIRect::MakeXYWH(30, 0, 1, 1), 0);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 30, 1, 1), 0);
verifyTileHits(reporter, SkIRect::MakeXYWH(-10, 0, 1, 1), 0);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, -10, 1, 1), 0);
// Dilation for AA consideration
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 0, 8, 8), kTopLeft_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 0, 9, 9), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(10, 10, 1, 1), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(11, 11, 1, 1), kBottomRight_Tile);
// BBoxes that overlap tiles
verifyTileHits(reporter, SkIRect::MakeXYWH(5, 5, 10, 1), kTopLeft_Tile | kTopRight_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(5, 5, 1, 10), kTopLeft_Tile |
kBottomLeft_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(5, 5, 10, 10), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(-10, -10, 40, 40), kAll_Tile);
TestUnalignedQuery(reporter);
}
};
#include "TestClassDef.h"
DEFINE_TESTCLASS("TileGrid", TileGridTestClass, TileGridTest::Test)
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