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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "printing/metafile_skia.h"
#include "cc/paint/paint_record.h"
#include "printing/common/metafile_utils.h"
#include "printing/mojom/print.mojom.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkPictureRecorder.h"
namespace printing {
TEST(MetafileSkiaTest, TestFrameContent) {
constexpr int kPictureSideLen = 100;
constexpr int kPageSideLen = 150;
// Create a placeholder picture.
sk_sp<SkPicture> pic_holder = SkPicture::MakePlaceholder(
SkRect::MakeXYWH(0, 0, kPictureSideLen, kPictureSideLen));
// Create the page with nested content which is the placeholder and will be
// replaced later.
sk_sp<cc::PaintRecord> record = sk_make_sp<cc::PaintRecord>();
cc::PaintFlags flags;
flags.setColor(SK_ColorWHITE);
const SkRect page_rect = SkRect::MakeXYWH(0, 0, kPageSideLen, kPageSideLen);
record->push<cc::DrawRectOp>(page_rect, flags);
const uint32_t content_id = pic_holder->uniqueID();
record->push<cc::CustomDataOp>(content_id);
SkSize page_size = SkSize::Make(kPageSideLen, kPageSideLen);
// Finish creating the entire metafile.
MetafileSkia metafile(mojom::SkiaDocumentType::kMSKP, 1);
metafile.AppendPage(page_size, std::move(record));
metafile.AppendSubframeInfo(content_id, 2, std::move(pic_holder));
metafile.FinishFrameContent();
SkStreamAsset* metafile_stream = metafile.GetPdfData();
ASSERT_TRUE(metafile_stream);
// Draw a 100 by 100 red square which will be the actual content of
// the placeholder.
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(kPictureSideLen, kPictureSideLen);
SkPaint paint;
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(SK_ColorRED);
paint.setAlpha(SK_AlphaOPAQUE);
canvas->drawRect(SkRect::MakeXYWH(0, 0, kPictureSideLen, kPictureSideLen),
paint);
sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
EXPECT_TRUE(picture);
// Get the complete picture by replacing the placeholder.
PictureDeserializationContext subframes;
subframes[content_id] = picture;
SkDeserialProcs procs = DeserializationProcs(&subframes);
sk_sp<SkPicture> pic = SkPicture::MakeFromStream(metafile_stream, &procs);
ASSERT_TRUE(pic);
// Verify the resultant picture is as expected by comparing the sizes and
// detecting the color inside and outside of the square area.
EXPECT_TRUE(pic->cullRect() == page_rect);
SkBitmap bitmap;
bitmap.allocN32Pixels(kPageSideLen, kPageSideLen);
SkCanvas bitmap_canvas(bitmap);
pic->playback(&bitmap_canvas);
// Check top left pixel color of the red square.
EXPECT_EQ(bitmap.getColor(0, 0), SK_ColorRED);
// Check bottom right pixel of the red square.
EXPECT_EQ(bitmap.getColor(kPictureSideLen - 1, kPictureSideLen - 1),
SK_ColorRED);
// Check inside of the red square.
EXPECT_EQ(bitmap.getColor(kPictureSideLen / 2, kPictureSideLen / 2),
SK_ColorRED);
// Check outside of the red square.
EXPECT_EQ(bitmap.getColor(kPictureSideLen, kPictureSideLen), SK_ColorWHITE);
}
} // namespace printing
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