src/third_party/skia/tests/PictureBBHTest.cpp

   1 /*
   2  * Copyright 2014 Google Inc.
   3  *
   4  * Use of this source code is governed by a BSD-style license that can be
   5  * found in the LICENSE file.
   6  */
   7
   8 #include "SkCanvas.h"
   9 #include "SkBBoxHierarchy.h"
  10 #include "SkPaint.h"
  11 #include "SkPicture.h"
  12 #include "SkPictureRecorder.h"
  13
  14 #include "Test.h"
  15
  16 class PictureBBHTestBase {
  17 public:
  18     PictureBBHTestBase(int playbackWidth, int playbackHeight,
  19         int recordWidth, int recordHeight) {
  20
  21         fResultBitmap.allocN32Pixels(playbackWidth, playbackHeight);
  22         fPictureWidth = recordWidth;
  23         fPictureHeight = recordHeight;
  24     }
  25
  26     virtual ~PictureBBHTestBase() { }
  27
  28     virtual void doTest(SkCanvas& playbackCanvas, SkCanvas& recordingCanvas) = 0;
  29
  30     void run(skiatest::Reporter* reporter) {
  31         // No BBH
  32         this->run(NULL, reporter);
  33
  34         // With a Tile Grid
  35         SkTileGridFactory::TileGridInfo gridInfo;
  36         gridInfo.fMargin.setEmpty();
  37         gridInfo.fOffset.setZero();
  38         gridInfo.fTileInterval.set(1, 1);
  39         SkTileGridFactory gridFactory(gridInfo);
  40         this->run(&gridFactory, reporter);
  41
  42         // With an R-Tree
  43         SkRTreeFactory RTreeFactory;
  44         this->run(&RTreeFactory, reporter);
  45     }
  46
  47 private:
  48     void run(SkBBHFactory* factory, skiatest::Reporter* reporter) {
  49         SkCanvas playbackCanvas(fResultBitmap);
  50         playbackCanvas.clear(SK_ColorGREEN);
  51         SkPictureRecorder recorder;
  52         SkCanvas* recordCanvas = recorder.beginRecording(SkIntToScalar(fPictureWidth), SkIntToScalar(fPictureHeight), factory);
  53         this->doTest(playbackCanvas, *recordCanvas);
  54         SkAutoTUnref<SkPicture> picture(recorder.endRecording());
  55         playbackCanvas.drawPicture(picture);
  56         REPORTER_ASSERT(reporter, SK_ColorGREEN == fResultBitmap.getColor(0, 0));
  57     }
  58
  59     SkBitmap fResultBitmap;
  60     int fPictureWidth, fPictureHeight;
  61 };
  62
  63 // Test to verify the playback of an empty picture
  64 //
  65 class DrawEmptyPictureBBHTest : public PictureBBHTestBase {
  66 public:
  67     DrawEmptyPictureBBHTest()
  68         : PictureBBHTestBase(2, 2, 1, 1) { }
  69     virtual ~DrawEmptyPictureBBHTest() { }
  70
  71     virtual void doTest(SkCanvas&, SkCanvas&) SK_OVERRIDE { }
  72 };
  73
  74 // Test to verify the playback of a picture into a canvas that has
  75 // an empty clip.
  76 //
  77 class EmptyClipPictureBBHTest : public PictureBBHTestBase {
  78 public:
  79     EmptyClipPictureBBHTest()
  80         : PictureBBHTestBase(2, 2, 3, 3) { }
  81
  82     virtual void doTest(SkCanvas& playbackCanvas, SkCanvas& recordingCanvas) SK_OVERRIDE {
  83         // intersect with out of bounds rect -> empty clip.
  84         playbackCanvas.clipRect(SkRect::MakeXYWH(SkIntToScalar(10), SkIntToScalar(10),
  85             SkIntToScalar(1), SkIntToScalar(1)), SkRegion::kIntersect_Op);
  86         SkPaint paint;
  87         recordingCanvas.drawRect(SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(0),
  88             SkIntToScalar(3), SkIntToScalar(3)), paint);
  89     }
  90
  91     virtual ~EmptyClipPictureBBHTest() { }
  92 };
  93
  94 DEF_TEST(PictureBBH, reporter) {
  95
  96     DrawEmptyPictureBBHTest emptyPictureTest;
  97     emptyPictureTest.run(reporter);
  98
  99     EmptyClipPictureBBHTest emptyClipPictureTest;
 100     emptyClipPictureTest.run(reporter);
 101 }