src/third_party/skia/tests/RecorderTest.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 "Test.h"
   9
  10 #include "SkPictureRecorder.h"
  11 #include "SkRecord.h"
  12 #include "SkRecorder.h"
  13 #include "SkRecords.h"
  14 #include "SkShader.h"
  15
  16 #define COUNT(T) + 1
  17 static const int kRecordTypes = SK_RECORD_TYPES(COUNT);
  18 #undef COUNT
  19
  20 // Tallies the types of commands it sees into a histogram.
  21 class Tally {
  22 public:
  23     Tally() { sk_bzero(&fHistogram, sizeof(fHistogram)); }
  24
  25     template <typename T>
  26     void operator()(const T&) { ++fHistogram[T::kType]; }
  27
  28     template <typename T>
  29     int count() const { return fHistogram[T::kType]; }
  30
  31     void apply(const SkRecord& record) {
  32         for (unsigned i = 0; i < record.count(); i++) {
  33             record.visit<void>(i, *this);
  34         }
  35     }
  36
  37 private:
  38     int fHistogram[kRecordTypes];
  39 };
  40
  41 DEF_TEST(Recorder, r) {
  42     SkRecord record;
  43     SkRecorder recorder(&record, 1920, 1080);
  44
  45     recorder.drawRect(SkRect::MakeWH(10, 10), SkPaint());
  46
  47     Tally tally;
  48     tally.apply(record);
  49     REPORTER_ASSERT(r, 1 == tally.count<SkRecords::DrawRect>());
  50 }
  51
  52 // All of Skia will work fine without support for comment groups, but
  53 // Chrome's inspector can break.  This serves as a simple regression test.
  54 DEF_TEST(Recorder_CommentGroups, r) {
  55     SkRecord record;
  56     SkRecorder recorder(&record, 1920, 1080);
  57
  58     recorder.beginCommentGroup("test");
  59         recorder.addComment("foo", "bar");
  60         recorder.addComment("baz", "quux");
  61     recorder.endCommentGroup();
  62
  63     Tally tally;
  64     tally.apply(record);
  65
  66     REPORTER_ASSERT(r, 1 == tally.count<SkRecords::BeginCommentGroup>());
  67     REPORTER_ASSERT(r, 2 == tally.count<SkRecords::AddComment>());
  68     REPORTER_ASSERT(r, 1 == tally.count<SkRecords::EndCommentGroup>());
  69 }
  70
  71 // DrawData is similar to comment groups.  It doesn't affect drawing, but
  72 // it's a pass-through we provide to the client.  Again, a simple reg. test.
  73 DEF_TEST(Recorder_DrawData, r) {
  74     SkRecord record;
  75     SkRecorder recorder(&record, 100, 100);
  76
  77     const char* data = "This sure is some data, eh?";
  78     recorder.drawData(data, strlen(data));
  79
  80     Tally tally;
  81     tally.apply(record);
  82     REPORTER_ASSERT(r, 1 == tally.count<SkRecords::DrawData>());
  83 }
  84
  85 // Regression test for leaking refs held by optional arguments.
  86 DEF_TEST(Recorder_RefLeaking, r) {
  87     // We use SaveLayer to test:
  88     //   - its SkRect argument is optional and SkRect is POD.  Just testing that that works.
  89     //   - its SkPaint argument is optional and SkPaint is not POD.  The bug was here.
  90
  91     SkRect bounds = SkRect::MakeWH(320, 240);
  92     SkPaint paint;
  93     paint.setShader(SkShader::CreateEmptyShader())->unref();
  94
  95     REPORTER_ASSERT(r, paint.getShader()->unique());
  96     {
  97         SkRecord record;
  98         SkRecorder recorder(&record, 1920, 1080);
  99         recorder.saveLayer(&bounds, &paint);
 100         REPORTER_ASSERT(r, !paint.getShader()->unique());
 101     }
 102     REPORTER_ASSERT(r, paint.getShader()->unique());
 103 }
 104
 105 DEF_TEST(Recorder_RefPictures, r) {
 106     SkAutoTUnref<SkPicture> pic;
 107
 108     {
 109         SkPictureRecorder pr;
 110         SkCanvas* canvas = pr.beginRecording(100, 100);
 111         canvas->drawColor(SK_ColorRED);
 112         pic.reset(pr.endRecording());
 113     }
 114     REPORTER_ASSERT(r, pic->unique());
 115
 116     {
 117         SkRecord record;
 118         SkRecorder recorder(&record, 100, 100);
 119         recorder.drawPicture(pic);
 120         // the recorder should now also be an owner
 121         REPORTER_ASSERT(r, !pic->unique());
 122     }
 123     // the recorder destructor should have released us (back to unique)
 124     REPORTER_ASSERT(r, pic->unique());
 125 }
 126
 127 DEF_TEST(Recorder_IsDrawingToLayer, r) {
 128     SkRecord record;
 129     SkRecorder recorder(&record, 100, 100);
 130
 131     // We'll save, saveLayer, save, and saveLayer, then restore them all,
 132     // checking that isDrawingToLayer() is correct at each step.
 133
 134     REPORTER_ASSERT(r, !recorder.isDrawingToLayer());
 135     recorder.save();
 136         REPORTER_ASSERT(r, !recorder.isDrawingToLayer());
 137         recorder.saveLayer(NULL, NULL);
 138             REPORTER_ASSERT(r, recorder.isDrawingToLayer());
 139             recorder.save();
 140                 REPORTER_ASSERT(r, recorder.isDrawingToLayer());
 141                 recorder.saveLayer(NULL, NULL);
 142                     REPORTER_ASSERT(r, recorder.isDrawingToLayer());
 143                 recorder.restore();
 144                 REPORTER_ASSERT(r, recorder.isDrawingToLayer());
 145             recorder.restore();
 146             REPORTER_ASSERT(r, recorder.isDrawingToLayer());
 147         recorder.restore();
 148         REPORTER_ASSERT(r, !recorder.isDrawingToLayer());
 149     recorder.restore();
 150     REPORTER_ASSERT(r, !recorder.isDrawingToLayer());
 151 }
 152