content/test/render_widget_browsertest.cc - chromium/src - Git at Google

 // Copyright (c) 2011 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 "content/test/render_widget_browsertest.h"

 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/stringprintf.h"
 #include "content/common/view_messages.h"
 #include "content/renderer/render_view_impl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSize.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "ui/gfx/codec/jpeg_codec.h"
 #include "ui/gfx/size.h"
 #include "ui/gfx/surface/transport_dib.h"

 const int RenderWidgetTest::kNumBytesPerPixel = 4;
 const int RenderWidgetTest::kLargeWidth = 1024;
 const int RenderWidgetTest::kLargeHeight = 768;
 const int RenderWidgetTest::kSmallWidth = 600;
 const int RenderWidgetTest::kSmallHeight = 450;
 const int RenderWidgetTest::kTextPositionX = 800;
 const int RenderWidgetTest::kTextPositionY = 600;
 const uint32 RenderWidgetTest::kRedARGB = 0xFFFF0000;

 RenderWidgetTest::RenderWidgetTest() {}

 void RenderWidgetTest::ResizeAndPaint(const gfx::Size& page_size,
                                       const gfx::Size& desired_size,
                                       SkBitmap* snapshot) {
   ASSERT_TRUE(snapshot);
   static int g_sequence_num = 0;
   // Use a new sequence number for each DIB.
   scoped_ptr<TransportDIB> pixels(
       TransportDIB::Create(
           page_size.width() * page_size.height() * kNumBytesPerPixel,
           ++g_sequence_num));

   // Go ahead and map the DIB into memory, so that we can use it below
   // to fill tmp_bitmap.  Note that we need to do this before calling
   // OnMsgPaintAtSize, or the last reference to the shared memory will
   // be closed and the handle will no longer be valid.
   scoped_ptr<TransportDIB> mapped_pixels(TransportDIB::Map(pixels->handle()));

   RenderViewImpl* impl = static_cast<RenderViewImpl*>(view_);
   impl->OnMsgPaintAtSize(pixels->handle(), g_sequence_num, page_size,
                          desired_size);
   ProcessPendingMessages();
   const IPC::Message* msg = render_thread_->sink().GetUniqueMessageMatching(
       ViewHostMsg_PaintAtSize_ACK::ID);
   ASSERT_NE(static_cast<IPC::Message*>(NULL), msg);
   ViewHostMsg_PaintAtSize_ACK::Param params;
   ViewHostMsg_PaintAtSize_ACK::Read(msg, &params);
   render_thread_->sink().ClearMessages();
   EXPECT_EQ(g_sequence_num, params.a);
   gfx::Size size = params.b;
   EXPECT_EQ(desired_size, size);

   SkBitmap tmp_bitmap;
   tmp_bitmap.setConfig(SkBitmap::kARGB_8888_Config,
                        size.width(), size.height());
   tmp_bitmap.setPixels(mapped_pixels->memory());
   // Copy the pixels from the TransportDIB object to the given snapshot.
   ASSERT_TRUE(tmp_bitmap.copyTo(snapshot, SkBitmap::kARGB_8888_Config));
 }

 void RenderWidgetTest::TestResizeAndPaint() {
   // Hello World message is only visible if the view size is at least
   // kTextPositionX x kTextPositionY
   LoadHTML(StringPrintf(
       "<html><body><div style='position: absolute; top: %d; left: "
       "%d; background-color: red;'>Hello World</div></body></html>",
       kTextPositionY, kTextPositionX).c_str());
   WebKit::WebSize old_size = view_->GetWebView()->size();

   SkBitmap bitmap;
   // If we re-size the view to something smaller than where the 'Hello World'
   // text is displayed we won't see any text in the snapshot.  Hence,
   // the snapshot should not contain any red.
   gfx::Size size(kSmallWidth, kSmallHeight);
   ResizeAndPaint(size, size, &bitmap);
   // Make sure that the view has been re-sized to its old size.
   EXPECT_TRUE(old_size == view_->GetWebView()->size());
   EXPECT_EQ(kSmallWidth, bitmap.width());
   EXPECT_EQ(kSmallHeight, bitmap.height());
   EXPECT_FALSE(ImageContainsColor(bitmap, kRedARGB));

   // Since we ask for the view to be re-sized to something larger than where the
   // 'Hello World' text is written the text should be visible in the snapshot.
   // Hence, the snapshot should contain some red.
   size.SetSize(kLargeWidth, kLargeHeight);
   ResizeAndPaint(size, size, &bitmap);
   EXPECT_TRUE(old_size == view_->GetWebView()->size());
   EXPECT_EQ(kLargeWidth, bitmap.width());
   EXPECT_EQ(kLargeHeight, bitmap.height());
   EXPECT_TRUE(ImageContainsColor(bitmap, kRedARGB));

   // Even if the desired size is smaller than where the text is located we
   // should still see the 'Hello World' message since the view size is
   // still large enough.
   ResizeAndPaint(size, gfx::Size(kSmallWidth, kSmallHeight), &bitmap);
   EXPECT_TRUE(old_size == view_->GetWebView()->size());
   EXPECT_EQ(kSmallWidth, bitmap.width());
   EXPECT_EQ(kSmallHeight, bitmap.height());
   EXPECT_TRUE(ImageContainsColor(bitmap, kRedARGB));
 }

 bool RenderWidgetTest::ImageContainsColor(const SkBitmap& bitmap,
                                           uint32 argb_color) {
   SkAutoLockPixels lock(bitmap);
   bool ready = bitmap.readyToDraw();
   EXPECT_TRUE(ready);
   if (!ready) {
     return false;
   }
   for (int x = 0; x < bitmap.width(); ++x) {
     for (int y = 0; y < bitmap.height(); ++y) {
       if (argb_color == *bitmap.getAddr32(x, y)) {
         return true;
       }
     }
   }
   return false;
 }

 void RenderWidgetTest::OutputBitmapToFile(const SkBitmap& bitmap,
                                           const FilePath& file_path) {
   scoped_refptr<RefCountedBytes> bitmap_data(new RefCountedBytes());
   SkAutoLockPixels lock(bitmap);
   ASSERT_TRUE(gfx::JPEGCodec::Encode(
       reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0)),
       gfx::JPEGCodec::FORMAT_BGRA,
       bitmap.width(),
       bitmap.height(),
       static_cast<int>(bitmap.rowBytes()),
       90 /* quality */,
       &bitmap_data->data()));
   ASSERT_LT(0, file_util::WriteFile(
       file_path,
       reinterpret_cast<const char*>(bitmap_data->front()),
       bitmap_data->size()));
 }

 TEST_F(RenderWidgetTest, OnMsgPaintAtSize) {
   TestResizeAndPaint();
 }
	// Copyright (c) 2011 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 "content/test/render_widget_browsertest.h"

	#include "base/basictypes.h"
	#include "base/file_path.h"
	#include "base/file_util.h"
	#include "base/memory/ref_counted_memory.h"
	#include "base/stringprintf.h"
	#include "content/common/view_messages.h"
	#include "content/renderer/render_view_impl.h"
	#include "testing/gtest/include/gtest/gtest.h"
	#include "third_party/skia/include/core/SkBitmap.h"
	#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSize.h"
	#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
	#include "ui/gfx/codec/jpeg_codec.h"
	#include "ui/gfx/size.h"
	#include "ui/gfx/surface/transport_dib.h"

	const int RenderWidgetTest::kNumBytesPerPixel = 4;
	const int RenderWidgetTest::kLargeWidth = 1024;
	const int RenderWidgetTest::kLargeHeight = 768;
	const int RenderWidgetTest::kSmallWidth = 600;
	const int RenderWidgetTest::kSmallHeight = 450;
	const int RenderWidgetTest::kTextPositionX = 800;
	const int RenderWidgetTest::kTextPositionY = 600;
	const uint32 RenderWidgetTest::kRedARGB = 0xFFFF0000;

	RenderWidgetTest::RenderWidgetTest() {}

	void RenderWidgetTest::ResizeAndPaint(const gfx::Size& page_size,
	const gfx::Size& desired_size,
	SkBitmap* snapshot) {
	ASSERT_TRUE(snapshot);
	static int g_sequence_num = 0;
	// Use a new sequence number for each DIB.
	scoped_ptr<TransportDIB> pixels(
	TransportDIB::Create(
	page_size.width() * page_size.height() * kNumBytesPerPixel,
	++g_sequence_num));

	// Go ahead and map the DIB into memory, so that we can use it below
	// to fill tmp_bitmap. Note that we need to do this before calling
	// OnMsgPaintAtSize, or the last reference to the shared memory will
	// be closed and the handle will no longer be valid.
	scoped_ptr<TransportDIB> mapped_pixels(TransportDIB::Map(pixels->handle()));

	RenderViewImpl* impl = static_cast<RenderViewImpl*>(view_);
	impl->OnMsgPaintAtSize(pixels->handle(), g_sequence_num, page_size,
	desired_size);
	ProcessPendingMessages();
	const IPC::Message* msg = render_thread_->sink().GetUniqueMessageMatching(
	ViewHostMsg_PaintAtSize_ACK::ID);
	ASSERT_NE(static_cast<IPC::Message*>(NULL), msg);
	ViewHostMsg_PaintAtSize_ACK::Param params;
	ViewHostMsg_PaintAtSize_ACK::Read(msg, &params);
	render_thread_->sink().ClearMessages();
	EXPECT_EQ(g_sequence_num, params.a);
	gfx::Size size = params.b;
	EXPECT_EQ(desired_size, size);

	SkBitmap tmp_bitmap;
	tmp_bitmap.setConfig(SkBitmap::kARGB_8888_Config,
	size.width(), size.height());
	tmp_bitmap.setPixels(mapped_pixels->memory());
	// Copy the pixels from the TransportDIB object to the given snapshot.
	ASSERT_TRUE(tmp_bitmap.copyTo(snapshot, SkBitmap::kARGB_8888_Config));
	}

	void RenderWidgetTest::TestResizeAndPaint() {
	// Hello World message is only visible if the view size is at least
	// kTextPositionX x kTextPositionY
	LoadHTML(StringPrintf(
	"<html><body><div style='position: absolute; top: %d; left: "
	"%d; background-color: red;'>Hello World</div></body></html>",
	kTextPositionY, kTextPositionX).c_str());
	WebKit::WebSize old_size = view_->GetWebView()->size();

	SkBitmap bitmap;
	// If we re-size the view to something smaller than where the 'Hello World'
	// text is displayed we won't see any text in the snapshot. Hence,
	// the snapshot should not contain any red.
	gfx::Size size(kSmallWidth, kSmallHeight);
	ResizeAndPaint(size, size, &bitmap);
	// Make sure that the view has been re-sized to its old size.
	EXPECT_TRUE(old_size == view_->GetWebView()->size());
	EXPECT_EQ(kSmallWidth, bitmap.width());
	EXPECT_EQ(kSmallHeight, bitmap.height());
	EXPECT_FALSE(ImageContainsColor(bitmap, kRedARGB));

	// Since we ask for the view to be re-sized to something larger than where the
	// 'Hello World' text is written the text should be visible in the snapshot.
	// Hence, the snapshot should contain some red.
	size.SetSize(kLargeWidth, kLargeHeight);
	ResizeAndPaint(size, size, &bitmap);
	EXPECT_TRUE(old_size == view_->GetWebView()->size());
	EXPECT_EQ(kLargeWidth, bitmap.width());
	EXPECT_EQ(kLargeHeight, bitmap.height());
	EXPECT_TRUE(ImageContainsColor(bitmap, kRedARGB));

	// Even if the desired size is smaller than where the text is located we
	// should still see the 'Hello World' message since the view size is
	// still large enough.
	ResizeAndPaint(size, gfx::Size(kSmallWidth, kSmallHeight), &bitmap);
	EXPECT_TRUE(old_size == view_->GetWebView()->size());
	EXPECT_EQ(kSmallWidth, bitmap.width());
	EXPECT_EQ(kSmallHeight, bitmap.height());
	EXPECT_TRUE(ImageContainsColor(bitmap, kRedARGB));
	}

	bool RenderWidgetTest::ImageContainsColor(const SkBitmap& bitmap,
	uint32 argb_color) {
	SkAutoLockPixels lock(bitmap);
	bool ready = bitmap.readyToDraw();
	EXPECT_TRUE(ready);
	if (!ready) {
	return false;
	}
	for (int x = 0; x < bitmap.width(); ++x) {
	for (int y = 0; y < bitmap.height(); ++y) {
	if (argb_color == *bitmap.getAddr32(x, y)) {
	return true;
	}
	}
	}
	return false;
	}

	void RenderWidgetTest::OutputBitmapToFile(const SkBitmap& bitmap,
	const FilePath& file_path) {
	scoped_refptr<RefCountedBytes> bitmap_data(new RefCountedBytes());
	SkAutoLockPixels lock(bitmap);
	ASSERT_TRUE(gfx::JPEGCodec::Encode(
	reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0)),
	gfx::JPEGCodec::FORMAT_BGRA,
	bitmap.width(),
	bitmap.height(),
	static_cast<int>(bitmap.rowBytes()),
	90 /* quality */,
	&bitmap_data->data()));
	ASSERT_LT(0, file_util::WriteFile(
	file_path,
	reinterpret_cast<const char*>(bitmap_data->front()),
	bitmap_data->size()));
	}

	TEST_F(RenderWidgetTest, OnMsgPaintAtSize) {
	TestResizeAndPaint();
	}