зеркало из https://github.com/mozilla/moz-skia.git
114 строки
3.2 KiB
C++
114 строки
3.2 KiB
C++
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Test.h"
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#include "SkBitmap.h"
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#include "SkImageInfo.h"
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#include "SkShader.h"
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#include "SkRecord.h"
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#include "SkRecordAnalysis.h"
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#include "SkRecords.h"
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// Sums the area of any DrawRect command it sees.
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class AreaSummer {
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public:
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AreaSummer() : fArea(0) {}
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template <typename T> void operator()(const T&) { }
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void operator()(const SkRecords::DrawRect& draw) {
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fArea += (int)(draw.rect.width() * draw.rect.height());
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}
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int area() const { return fArea; }
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void apply(const SkRecord& record) {
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for (unsigned i = 0; i < record.count(); i++) {
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record.visit<void>(i, *this);
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}
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}
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private:
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int fArea;
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};
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// Scales out the bottom-right corner of any DrawRect command it sees by 2x.
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struct Stretch {
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template <typename T> void operator()(T*) {}
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void operator()(SkRecords::DrawRect* draw) {
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draw->rect.fRight *= 2;
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draw->rect.fBottom *= 2;
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}
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void apply(SkRecord* record) {
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for (unsigned i = 0; i < record->count(); i++) {
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record->mutate<void>(i, *this);
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}
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}
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};
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#define APPEND(record, type, ...) SkNEW_PLACEMENT_ARGS(record.append<type>(), type, (__VA_ARGS__))
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// Basic tests for the low-level SkRecord code.
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DEF_TEST(Record, r) {
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SkRecord record;
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// Add a simple DrawRect command.
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SkRect rect = SkRect::MakeWH(10, 10);
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SkPaint paint;
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APPEND(record, SkRecords::DrawRect, paint, rect);
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// Its area should be 100.
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AreaSummer summer;
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summer.apply(record);
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REPORTER_ASSERT(r, summer.area() == 100);
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// Scale 2x.
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Stretch stretch;
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stretch.apply(&record);
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// Now its area should be 100 + 400.
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summer.apply(record);
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REPORTER_ASSERT(r, summer.area() == 500);
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}
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DEF_TEST(RecordAnalysis, r) {
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SkRecord record;
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SkRect rect = SkRect::MakeWH(10, 10);
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SkPaint paint;
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APPEND(record, SkRecords::DrawRect, paint, rect);
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REPORTER_ASSERT(r, !SkRecordWillPlaybackBitmaps(record));
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SkBitmap bitmap;
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APPEND(record, SkRecords::DrawBitmap, &paint, bitmap, 0.0f, 0.0f);
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REPORTER_ASSERT(r, SkRecordWillPlaybackBitmaps(record));
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SkNEW_PLACEMENT_ARGS(record.replace<SkRecords::DrawRect>(1),
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SkRecords::DrawRect, (paint, rect));
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REPORTER_ASSERT(r, !SkRecordWillPlaybackBitmaps(record));
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SkPaint paint2;
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// CreateBitmapShader is too smart for us; an empty (or 1x1) bitmap shader
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// gets optimized into a non-bitmap form, so we create a 2x2 bitmap here.
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SkBitmap bitmap2;
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bitmap2.allocPixels(SkImageInfo::MakeN32Premul(2, 2));
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bitmap2.eraseColor(SK_ColorBLUE);
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*(bitmap2.getAddr32(0, 0)) = SK_ColorGREEN;
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SkShader* shader = SkShader::CreateBitmapShader(bitmap2, SkShader::kClamp_TileMode,
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SkShader::kClamp_TileMode);
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paint2.setShader(shader)->unref();
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REPORTER_ASSERT(r, shader->asABitmap(NULL, NULL, NULL) == SkShader::kDefault_BitmapType);
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APPEND(record, SkRecords::DrawRect, paint2, rect);
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REPORTER_ASSERT(r, SkRecordWillPlaybackBitmaps(record));
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}
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#undef APPEND
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