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// Copyright 2014 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 "chrome/browser/ui/pdf/pdf_browsertest_base.h"
#include <algorithm>
#include <vector>
#include "base/path_service.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/test/base/ui_test_utils.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/screen.h"
#if defined(OS_LINUX)
#include "base/command_line.h"
#include "content/public/common/content_switches.h"
#endif
#if defined(OS_CHROMEOS)
#include "ui/compositor/compositor_switches.h"
#endif
namespace {
// Include things like browser frame and scrollbar and make sure we're bigger
// than the test pdf document.
const int kBrowserWidth = 1000;
const int kBrowserHeight = 600;
} // namespace
PDFBrowserTest::PDFBrowserTest()
: snapshot_different_(true),
next_dummy_search_value_(0),
load_stop_notification_count_(0) {
base::FilePath src_dir;
EXPECT_TRUE(PathService::Get(base::DIR_SOURCE_ROOT, &src_dir));
pdf_test_server_.ServeFilesFromDirectory(src_dir.AppendASCII(
"chrome/test/data/pdf_private"));
}
PDFBrowserTest::~PDFBrowserTest() {
}
void PDFBrowserTest::Load() {
// Make sure to set the window size before rendering, as otherwise rendering
// to a smaller window and then expanding leads to slight anti-aliasing
// differences of the text and the pixel comparison fails.
gfx::Rect bounds(gfx::Rect(0, 0, kBrowserWidth, kBrowserHeight));
gfx::Rect screen_bounds =
gfx::Screen::GetNativeScreen()->GetPrimaryDisplay().bounds();
ASSERT_GT(screen_bounds.width(), kBrowserWidth);
ASSERT_GT(screen_bounds.height(), kBrowserHeight);
browser()->window()->SetBounds(bounds);
GURL url(ui_test_utils::GetTestUrl(
base::FilePath(FILE_PATH_LITERAL("pdf_private")),
base::FilePath(FILE_PATH_LITERAL("pdf_browsertest.pdf"))));
ui_test_utils::NavigateToURL(browser(), url);
}
void PDFBrowserTest::WaitForResponse() {
// Even if the plugin has loaded the data or scrolled, because of how
// pepper painting works, we might not have the data. One way to force this
// to be flushed is to do a find operation, since on this two-page test
// document, it'll wait for us to flush the renderer message loop twice and
// also the browser's once, at which point we're guaranteed to have updated
// the backingstore. Hacky, but it works.
// Note that we need to change the text each time, because if we don't the
// renderer code will think the second message is to go to next result, but
// there are none so the plugin will assert.
base::string16 query = base::UTF8ToUTF16(
std::string("xyzxyz" + base::IntToString(next_dummy_search_value_++)));
ASSERT_EQ(0, ui_test_utils::FindInPage(
browser()->tab_strip_model()->GetActiveWebContents(),
query, true, false, NULL, NULL));
}
bool PDFBrowserTest::VerifySnapshot(const std::string& expected_filename) {
snapshot_different_ = true;
expected_filename_ = expected_filename;
content::WebContents* web_contents =
browser()->tab_strip_model()->GetActiveWebContents();
DCHECK(web_contents);
content::RenderWidgetHost* rwh = web_contents->GetRenderViewHost();
rwh->CopyFromBackingStore(
gfx::Rect(),
gfx::Size(),
base::Bind(&PDFBrowserTest::CopyFromBackingStoreCallback, this),
kN32_SkColorType);
content::RunMessageLoop();
if (snapshot_different_) {
LOG(INFO) << "Rendering didn't match, see result "
<< snapshot_filename_.value();
}
return !snapshot_different_;
}
void PDFBrowserTest::CopyFromBackingStoreCallback(bool success,
const SkBitmap& bitmap) {
base::MessageLoopForUI::current()->Quit();
ASSERT_EQ(success, true);
base::FilePath reference = ui_test_utils::GetTestFilePath(
base::FilePath(FILE_PATH_LITERAL("pdf_private")),
base::FilePath().AppendASCII(expected_filename_));
base::File::Info info;
ASSERT_TRUE(base::GetFileInfo(reference, &info));
int size = static_cast<size_t>(info.size);
scoped_ptr<char[]> data(new char[size]);
ASSERT_EQ(size, base::ReadFile(reference, data.get(), size));
int w, h;
std::vector<unsigned char> decoded;
ASSERT_TRUE(gfx::PNGCodec::Decode(
reinterpret_cast<unsigned char*>(data.get()), size,
gfx::PNGCodec::FORMAT_BGRA, &decoded, &w, &h));
int32* ref_pixels = reinterpret_cast<int32*>(&decoded[0]);
int32* pixels = static_cast<int32*>(bitmap.getPixels());
// Get the background color, and use it to figure out the x-offsets in
// each image. The reason is that depending on the theme in the OS, the
// same browser width can lead to slightly different plugin sizes, so the
// pdf content will start at different x offsets.
// Also note that the images we saved are cut off before the scrollbar, as
// that'll change depending on the theme, and also cut off vertically so
// that the ui controls don't show up, as those fade-in and so the timing
// will affect their transparency.
int32 bg_color = ref_pixels[0];
int ref_x_offset, snapshot_x_offset;
for (ref_x_offset = 0; ref_x_offset < w; ++ref_x_offset) {
if (ref_pixels[ref_x_offset] != bg_color)
break;
}
for (snapshot_x_offset = 0; snapshot_x_offset < bitmap.width();
++snapshot_x_offset) {
if (pixels[snapshot_x_offset] != bg_color)
break;
}
int x_max = std::min(w - ref_x_offset, bitmap.width() - snapshot_x_offset);
int y_max = std::min(h, bitmap.height());
int stride = bitmap.rowBytes();
snapshot_different_ = false;
for (int y = 0; y < y_max && !snapshot_different_; ++y) {
for (int x = 0; x < x_max && !snapshot_different_; ++x) {
if (pixels[y * stride / sizeof(int32) + x + snapshot_x_offset] !=
ref_pixels[y * w + x + ref_x_offset])
snapshot_different_ = true;
}
}
if (snapshot_different_) {
std::vector<unsigned char> png_data;
gfx::PNGCodec::EncodeBGRASkBitmap(bitmap, false, &png_data);
if (base::CreateTemporaryFile(&snapshot_filename_)) {
base::WriteFile(snapshot_filename_,
reinterpret_cast<char*>(&png_data[0]), png_data.size());
}
}
}
void PDFBrowserTest::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK_EQ(content::NOTIFICATION_LOAD_STOP, type);
load_stop_notification_count_++;
}
void PDFBrowserTest::SetUpCommandLine(base::CommandLine* command_line) {
#if defined(OS_LINUX)
// Calling RenderWidgetHost::CopyFromBackingStore() with the GPU enabled
// fails on Linux.
command_line->AppendSwitch(switches::kDisableGpu);
#endif
#if defined(OS_CHROMEOS)
// Also need on CrOS in addition to disabling the GPU above.
command_line->AppendSwitch(switches::kUIDisableThreadedCompositing);
#endif
}
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