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// Copyright (c) 2012 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/public/test/render_widget_test.h"
#include "base/basictypes.h"
#include "base/file_util.h"
#include "base/files/file_path.h"
#include "base/memory/ref_counted_memory.h"
#include "base/strings/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/public/platform/WebSize.h"
#include "third_party/WebKit/public/web/WebView.h"
#include "ui/gfx/codec/jpeg_codec.h"
#include "ui/gfx/size.h"
#include "ui/surface/transport_dib.h"
namespace content {
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 OnPaintAtSize, 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->OnPaintAtSize(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, ¶ms);
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(base::StringPrintf(
"<html><body><div style='position: absolute; top: %d; left: "
"%d; background-color: red;'>Hello World</div></body></html>",
kTextPositionY, kTextPositionX).c_str());
blink::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 base::FilePath& file_path) {
scoped_refptr<base::RefCountedBytes> bitmap_data(new base::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()));
}
void RenderWidgetTest::TestOnResize() {
RenderWidget* widget = static_cast<RenderViewImpl*>(view_);
// The initial bounds is empty, so setting it to the same thing should do
// nothing.
ViewMsg_Resize_Params resize_params;
resize_params.screen_info = blink::WebScreenInfo();
resize_params.new_size = gfx::Size();
resize_params.physical_backing_size = gfx::Size();
resize_params.overdraw_bottom_height = 0.f;
resize_params.resizer_rect = gfx::Rect();
resize_params.is_fullscreen = false;
widget->OnResize(resize_params);
EXPECT_FALSE(widget->next_paint_is_resize_ack());
// Setting empty physical backing size should not send the ack.
resize_params.new_size = gfx::Size(10, 10);
widget->OnResize(resize_params);
EXPECT_FALSE(widget->next_paint_is_resize_ack());
// Setting the bounds to a "real" rect should send the ack.
render_thread_->sink().ClearMessages();
gfx::Size size(100, 100);
resize_params.new_size = size;
resize_params.physical_backing_size = size;
widget->OnResize(resize_params);
EXPECT_TRUE(widget->next_paint_is_resize_ack());
widget->DoDeferredUpdate();
ProcessPendingMessages();
const ViewHostMsg_UpdateRect* msg =
static_cast<const ViewHostMsg_UpdateRect*>(
render_thread_->sink().GetUniqueMessageMatching(
ViewHostMsg_UpdateRect::ID));
ASSERT_TRUE(msg);
ViewHostMsg_UpdateRect::Schema::Param update_rect_params;
EXPECT_TRUE(ViewHostMsg_UpdateRect::Read(msg, &update_rect_params));
EXPECT_TRUE(ViewHostMsg_UpdateRect_Flags::is_resize_ack(
update_rect_params.a.flags));
EXPECT_EQ(size,
update_rect_params.a.view_size);
render_thread_->sink().ClearMessages();
// Setting the same size again should not send the ack.
widget->OnResize(resize_params);
EXPECT_FALSE(widget->next_paint_is_resize_ack());
// Resetting the rect to empty should not send the ack.
resize_params.new_size = gfx::Size();
resize_params.physical_backing_size = gfx::Size();
widget->OnResize(resize_params);
EXPECT_FALSE(widget->next_paint_is_resize_ack());
}
} // namespace content
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