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// Copyright 2016 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 "core/html/ImageDocument.h"
#include "core/dom/Document.h"
#include "core/dom/DocumentParser.h"
#include "core/frame/Settings.h"
#include "core/loader/EmptyClients.h"
#include "core/testing/DummyPageHolder.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace blink {
namespace {
// An image of size 50x50.
Vector<unsigned char> jpegImage() {
Vector<unsigned char> jpeg;
static const unsigned char data[] = {
0xff, 0xd8, 0xff, 0xe0, 0x00, 0x10, 0x4a, 0x46, 0x49, 0x46, 0x00, 0x01,
0x01, 0x01, 0x00, 0x48, 0x00, 0x48, 0x00, 0x00, 0xff, 0xdb, 0x00, 0x43,
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xdb, 0x00, 0x43, 0x01, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xc0, 0x00, 0x11, 0x08, 0x00, 0x32, 0x00, 0x32, 0x03,
0x01, 0x22, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff, 0xc4, 0x00,
0x14, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xc4, 0x00, 0x14, 0x10,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xc4, 0x00, 0x15, 0x01, 0x01, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x02, 0xff, 0xc4, 0x00, 0x14, 0x11, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xff, 0xda, 0x00, 0x0c, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03,
0x11, 0x00, 0x3f, 0x00, 0x00, 0x94, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x03, 0xff, 0xd9};
jpeg.append(data, sizeof(data));
return jpeg;
}
}
class WindowToViewportScalingChromeClient : public EmptyChromeClient {
public:
WindowToViewportScalingChromeClient()
: EmptyChromeClient(), m_scaleFactor(1.f) {}
void setScalingFactor(float s) { m_scaleFactor = s; }
float windowToViewportScalar(const float s) const override {
return s * m_scaleFactor;
}
private:
float m_scaleFactor;
};
class ImageDocumentTest : public ::testing::Test {
protected:
void TearDown() override { ThreadState::current()->collectAllGarbage(); }
void createDocumentWithoutLoadingImage(int viewWidth, int viewHeight);
void createDocument(int viewWidth, int viewHeight);
void loadImage();
ImageDocument& document() const;
int imageWidth() const { return document().imageElement()->width(); }
int imageHeight() const { return document().imageElement()->height(); }
void setPageZoom(float);
void setWindowToViewportScalingFactor(float);
private:
Persistent<WindowToViewportScalingChromeClient> m_chromeClient;
std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
};
void ImageDocumentTest::createDocumentWithoutLoadingImage(int viewWidth,
int viewHeight) {
Page::PageClients pageClients;
fillWithEmptyClients(pageClients);
m_chromeClient = new WindowToViewportScalingChromeClient();
pageClients.chromeClient = m_chromeClient;
m_dummyPageHolder =
DummyPageHolder::create(IntSize(viewWidth, viewHeight), &pageClients);
LocalFrame& frame = m_dummyPageHolder->frame();
frame.document()->shutdown();
DocumentInit init(KURL(), &frame);
frame.domWindow()->installNewDocument("image/jpeg", init);
}
void ImageDocumentTest::createDocument(int viewWidth, int viewHeight) {
createDocumentWithoutLoadingImage(viewWidth, viewHeight);
loadImage();
}
ImageDocument& ImageDocumentTest::document() const {
Document* document = m_dummyPageHolder->frame().domWindow()->document();
ImageDocument* imageDocument = static_cast<ImageDocument*>(document);
return *imageDocument;
}
void ImageDocumentTest::loadImage() {
DocumentParser* parser = document().implicitOpen(
ParserSynchronizationPolicy::ForceSynchronousParsing);
const Vector<unsigned char>& data = jpegImage();
parser->appendBytes(reinterpret_cast<const char*>(data.data()), data.size());
parser->finish();
}
void ImageDocumentTest::setPageZoom(float factor) {
m_dummyPageHolder->frame().setPageZoomFactor(factor);
}
void ImageDocumentTest::setWindowToViewportScalingFactor(float factor) {
m_chromeClient->setScalingFactor(factor);
}
TEST_F(ImageDocumentTest, ImageLoad) {
createDocument(50, 50);
EXPECT_EQ(50, imageWidth());
EXPECT_EQ(50, imageHeight());
}
TEST_F(ImageDocumentTest, LargeImageScalesDown) {
createDocument(25, 30);
EXPECT_EQ(25, imageWidth());
EXPECT_EQ(25, imageHeight());
createDocument(35, 20);
EXPECT_EQ(20, imageWidth());
EXPECT_EQ(20, imageHeight());
}
TEST_F(ImageDocumentTest, RestoreImageOnClick) {
createDocument(30, 40);
document().imageClicked(4, 4);
EXPECT_EQ(50, imageWidth());
EXPECT_EQ(50, imageHeight());
}
TEST_F(ImageDocumentTest, InitialZoomDoesNotAffectScreenFit) {
createDocumentWithoutLoadingImage(20, 10);
setPageZoom(2.f);
loadImage();
EXPECT_EQ(10, imageWidth());
EXPECT_EQ(10, imageHeight());
document().imageClicked(4, 4);
EXPECT_EQ(50, imageWidth());
EXPECT_EQ(50, imageHeight());
}
TEST_F(ImageDocumentTest, ZoomingDoesNotChangeRelativeSize) {
createDocument(75, 75);
setPageZoom(0.5f);
document().windowSizeChanged();
EXPECT_EQ(50, imageWidth());
EXPECT_EQ(50, imageHeight());
setPageZoom(2.f);
document().windowSizeChanged();
EXPECT_EQ(50, imageWidth());
EXPECT_EQ(50, imageHeight());
}
TEST_F(ImageDocumentTest, ImageScalesDownWithDsf) {
createDocumentWithoutLoadingImage(20, 30);
setWindowToViewportScalingFactor(2.f);
loadImage();
EXPECT_EQ(10, imageWidth());
EXPECT_EQ(10, imageHeight());
}
TEST_F(ImageDocumentTest, ImageNotCenteredWithForceZeroLayoutHeight) {
createDocumentWithoutLoadingImage(80, 70);
document().page()->settings().setForceZeroLayoutHeight(true);
loadImage();
EXPECT_FALSE(document().shouldShrinkToFit());
EXPECT_EQ(0, document().imageElement()->offsetLeft());
EXPECT_EQ(0, document().imageElement()->offsetTop());
EXPECT_EQ(50, imageWidth());
EXPECT_EQ(50, imageHeight());
}
TEST_F(ImageDocumentTest, ImageCenteredWithoutForceZeroLayoutHeight) {
createDocumentWithoutLoadingImage(80, 70);
document().page()->settings().setForceZeroLayoutHeight(false);
loadImage();
EXPECT_TRUE(document().shouldShrinkToFit());
EXPECT_EQ(15, document().imageElement()->offsetLeft());
EXPECT_EQ(10, document().imageElement()->offsetTop());
EXPECT_EQ(50, imageWidth());
EXPECT_EQ(50, imageHeight());
}
} // namespace blink
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