RecordDrawTest.cpp revision 271a030f5d0d3c59715fbeffb31c761279f3f8ca 
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#include "RecordTestUtils.h"
10
11#include "SkDebugCanvas.h"
12#include "SkDrawPictureCallback.h"
13#include "SkDropShadowImageFilter.h"
14#include "SkRecord.h"
15#include "SkRecordDraw.h"
16#include "SkRecordOpts.h"
17#include "SkRecorder.h"
18#include "SkRecords.h"
19
20static const int W = 1920, H = 1080;
21
22class JustOneDraw : public SkDrawPictureCallback {
23public:
24    JustOneDraw() : fCalls(0) {}
25
26    virtual bool abortDrawing() SK_OVERRIDE { return fCalls++ > 0; }
27private:
28    int fCalls;
29};
30
31DEF_TEST(RecordDraw_Abort, r) {
32    // Record two commands.
33    SkRecord record;
34    SkRecorder recorder(&record, W, H);
35    recorder.drawRect(SkRect::MakeWH(200, 300), SkPaint());
36    recorder.clipRect(SkRect::MakeWH(100, 200));
37
38    SkRecord rerecord;
39    SkRecorder canvas(&rerecord, W, H);
40
41    JustOneDraw callback;
42    SkRecordDraw(record, &canvas, NULL/*bbh*/, &callback);
43
44    REPORTER_ASSERT(r, 3 == rerecord.count());
45    assert_type<SkRecords::Save>    (r, rerecord, 0);
46    assert_type<SkRecords::DrawRect>(r, rerecord, 1);
47    assert_type<SkRecords::Restore> (r, rerecord, 2);
48}
49
50DEF_TEST(RecordDraw_Unbalanced, r) {
51    SkRecord record;
52    SkRecorder recorder(&record, W, H);
53    recorder.save();  // We won't balance this, but SkRecordDraw will for us.
54
55    SkRecord rerecord;
56    SkRecorder canvas(&rerecord, W, H);
57    SkRecordDraw(record, &canvas, NULL/*bbh*/, NULL/*callback*/);
58
59    REPORTER_ASSERT(r, 4 == rerecord.count());
60    assert_type<SkRecords::Save>    (r, rerecord, 0);
61    assert_type<SkRecords::Save>    (r, rerecord, 1);
62    assert_type<SkRecords::Restore> (r, rerecord, 2);
63    assert_type<SkRecords::Restore> (r, rerecord, 3);
64}
65
66DEF_TEST(RecordDraw_SetMatrixClobber, r) {
67    // Set up an SkRecord that just scales by 2x,3x.
68    SkRecord scaleRecord;
69    SkRecorder scaleCanvas(&scaleRecord, W, H);
70    SkMatrix scale;
71    scale.setScale(2, 3);
72    scaleCanvas.setMatrix(scale);
73
74    // Set up an SkRecord with an initial +20, +20 translate.
75    SkRecord translateRecord;
76    SkRecorder translateCanvas(&translateRecord, W, H);
77    SkMatrix translate;
78    translate.setTranslate(20, 20);
79    translateCanvas.setMatrix(translate);
80
81    SkRecordDraw(scaleRecord, &translateCanvas, NULL/*bbh*/, NULL/*callback*/);
82    REPORTER_ASSERT(r, 4 == translateRecord.count());
83    assert_type<SkRecords::SetMatrix>(r, translateRecord, 0);
84    assert_type<SkRecords::Save>     (r, translateRecord, 1);
85    assert_type<SkRecords::SetMatrix>(r, translateRecord, 2);
86    assert_type<SkRecords::Restore>  (r, translateRecord, 3);
87
88    // When we look at translateRecord now, it should have its first +20,+20 translate,
89    // then a 2x,3x scale that's been concatted with that +20,+20 translate.
90    const SkRecords::SetMatrix* setMatrix;
91    setMatrix = assert_type<SkRecords::SetMatrix>(r, translateRecord, 0);
92    REPORTER_ASSERT(r, setMatrix->matrix == translate);
93
94    setMatrix = assert_type<SkRecords::SetMatrix>(r, translateRecord, 2);
95    SkMatrix expected = scale;
96    expected.postConcat(translate);
97    REPORTER_ASSERT(r, setMatrix->matrix == expected);
98}
99
100struct TestBBH : public SkBBoxHierarchy {
101    virtual void insert(void* data, const SkRect& bounds, bool defer) SK_OVERRIDE {
102        Entry e = { (uintptr_t)data, bounds };
103        entries.push(e);
104    }
105    virtual int getCount() const SK_OVERRIDE { return entries.count(); }
106
107    virtual void flushDeferredInserts() SK_OVERRIDE {}
108
109    virtual void search(const SkRect& query, SkTDArray<void*>* results) const SK_OVERRIDE {}
110    virtual void clear() SK_OVERRIDE {}
111    virtual void rewindInserts() SK_OVERRIDE {}
112    virtual int getDepth() const SK_OVERRIDE { return -1; }
113
114    struct Entry {
115        uintptr_t data;
116        SkRect bounds;
117    };
118    SkTDArray<Entry> entries;
119};
120
121// Like a==b, with a little slop recognizing that float equality can be weird.
122static bool sloppy_rect_eq(SkRect a, SkRect b) {
123    SkRect inset(a), outset(a);
124    inset.inset(1, 1);
125    outset.outset(1, 1);
126    return outset.contains(b) && !inset.contains(b);
127}
128
129// This test is not meant to make total sense yet.  It's testing the status quo
130// of SkRecordFillBounds(), which itself doesn't make total sense yet.
131DEF_TEST(RecordDraw_BBH, r) {
132    SkRecord record;
133    SkRecorder recorder(&record, W, H);
134    recorder.save();
135        recorder.clipRect(SkRect::MakeWH(400, 500));
136        recorder.scale(2, 2);
137        recorder.drawRect(SkRect::MakeWH(320, 240), SkPaint());
138    recorder.restore();
139
140    TestBBH bbh;
141    SkRecordFillBounds(record, &bbh);
142
143    REPORTER_ASSERT(r, bbh.entries.count() == 5);
144    for (int i = 0; i < bbh.entries.count(); i++) {
145        REPORTER_ASSERT(r, bbh.entries[i].data == (uintptr_t)i);
146
147        REPORTER_ASSERT(r, sloppy_rect_eq(SkRect::MakeWH(400, 480), bbh.entries[i].bounds));
148    }
149}
150
151// A regression test for crbug.com/409110.
152DEF_TEST(RecordDraw_TextBounds, r) {
153    SkRecord record;
154    SkRecorder recorder(&record, W, H);
155
156    // Two Chinese characters in UTF-8.
157    const char text[] = { '\xe6', '\xbc', '\xa2', '\xe5', '\xad', '\x97' };
158    const size_t bytes = SK_ARRAY_COUNT(text);
159
160    const SkScalar xpos[] = { 10, 20 };
161    recorder.drawPosTextH(text, bytes, xpos, 30, SkPaint());
162
163    const SkPoint pos[] = { {40, 50}, {60, 70} };
164    recorder.drawPosText(text, bytes, pos, SkPaint());
165
166    TestBBH bbh;
167    SkRecordFillBounds(record, &bbh);
168    REPORTER_ASSERT(r, bbh.entries.count() == 2);
169
170    // We can make these next assertions confidently because SkRecordFillBounds
171    // builds its bounds by overestimating font metrics in a platform-independent way.
172    // If that changes, these tests will need to be more flexible.
173    REPORTER_ASSERT(r, sloppy_rect_eq(bbh.entries[0].bounds, SkRect::MakeLTRB(-86,  6, 116, 54)));
174    REPORTER_ASSERT(r, sloppy_rect_eq(bbh.entries[1].bounds, SkRect::MakeLTRB(-56, 26, 156, 94)));
175}
176
177// Base test to ensure start/stop range is respected
178DEF_TEST(RecordDraw_PartialStartStop, r) {
179    static const int kWidth = 10, kHeight = 10;
180
181    SkRect r1 = { 0, 0, kWidth,   kHeight };
182    SkRect r2 = { 0, 0, kWidth,   kHeight/2 };
183    SkRect r3 = { 0, 0, kWidth/2, kHeight };
184    SkPaint p;
185
186    SkRecord record;
187    SkRecorder recorder(&record, kWidth, kHeight);
188    recorder.drawRect(r1, p);
189    recorder.drawRect(r2, p);
190    recorder.drawRect(r3, p);
191
192    SkRecord rerecord;
193    SkRecorder canvas(&rerecord, kWidth, kHeight);
194    SkRecordPartialDraw(record, &canvas, r1, 1, 2, SkMatrix::I()); // replay just drawRect of r2
195
196    REPORTER_ASSERT(r, 3 == rerecord.count());
197    assert_type<SkRecords::Save>     (r, rerecord, 0);
198    assert_type<SkRecords::DrawRect> (r, rerecord, 1);
199    assert_type<SkRecords::Restore>  (r, rerecord, 2);
200
201    const SkRecords::DrawRect* drawRect = assert_type<SkRecords::DrawRect>(r, rerecord, 1);
202    REPORTER_ASSERT(r, drawRect->rect == r2);
203}
204
205// Check that clears are converted to drawRects
206DEF_TEST(RecordDraw_PartialClear, r) {
207    static const int kWidth = 10, kHeight = 10;
208
209    SkRect rect = { 0, 0, kWidth, kHeight };
210
211    SkRecord record;
212    SkRecorder recorder(&record, kWidth, kHeight);
213    recorder.clear(SK_ColorRED);
214
215    SkRecord rerecord;
216    SkRecorder canvas(&rerecord, kWidth, kHeight);
217    SkRecordPartialDraw(record, &canvas, rect, 0, 1, SkMatrix::I()); // replay just the clear
218
219    REPORTER_ASSERT(r, 3 == rerecord.count());
220    assert_type<SkRecords::Save>    (r, rerecord, 0);
221    assert_type<SkRecords::DrawRect>(r, rerecord, 1);
222    assert_type<SkRecords::Restore> (r, rerecord, 2);
223
224    const SkRecords::DrawRect* drawRect = assert_type<SkRecords::DrawRect>(r, rerecord, 1);
225    REPORTER_ASSERT(r, drawRect->rect == rect);
226    REPORTER_ASSERT(r, drawRect->paint.getColor() == SK_ColorRED);
227}
228
229// A regression test for crbug.com/415468 and skbug.com/2957.
230DEF_TEST(RecordDraw_SaveLayerAffectsClipBounds, r) {
231    SkRecord record;
232    SkRecorder recorder(&record, 50, 50);
233
234    // We draw a rectangle with a long drop shadow.  We used to not update the clip
235    // bounds based on SaveLayer paints, so the drop shadow could be cut off.
236    SkPaint paint;
237    paint.setImageFilter(SkDropShadowImageFilter::Create(20, 0, 0, 0, SK_ColorBLACK))->unref();
238
239    recorder.saveLayer(NULL, &paint);
240        recorder.clipRect(SkRect::MakeWH(20, 40));
241        recorder.drawRect(SkRect::MakeWH(20, 40), SkPaint());
242    recorder.restore();
243
244    // Under the original bug, all the right edge values would be 20 less than asserted here
245    // because we intersected them with a clip that had not been adjusted for the drop shadow.
246    TestBBH bbh;
247    SkRecordFillBounds(record, &bbh);
248    REPORTER_ASSERT(r, bbh.entries.count() == 4);
249    REPORTER_ASSERT(r, sloppy_rect_eq(bbh.entries[0].bounds, SkRect::MakeLTRB(0, 0, 70, 50)));
250    REPORTER_ASSERT(r, sloppy_rect_eq(bbh.entries[1].bounds, SkRect::MakeLTRB(0, 0, 70, 50)));
251    REPORTER_ASSERT(r, sloppy_rect_eq(bbh.entries[2].bounds, SkRect::MakeLTRB(0, 0, 40, 40)));
252    REPORTER_ASSERT(r, sloppy_rect_eq(bbh.entries[3].bounds, SkRect::MakeLTRB(0, 0, 70, 50)));
253}
254