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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 "components/test_runner/pixel_dump.h"
#include <memory>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/callback.h"
#include "base/logging.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/trace_event/trace_event.h"
#include "components/test_runner/layout_test_runtime_flags.h"
// FIXME: Including platform_canvas.h here is a layering violation.
#include "skia/ext/platform_canvas.h"
#include "third_party/WebKit/public/platform/Platform.h"
#include "third_party/WebKit/public/platform/WebCompositeAndReadbackAsyncCallback.h"
#include "third_party/WebKit/public/platform/WebImage.h"
#include "third_party/WebKit/public/platform/WebMockClipboard.h"
#include "third_party/WebKit/public/platform/WebPoint.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebLocalFrame.h"
#include "third_party/WebKit/public/web/WebPagePopup.h"
#include "third_party/WebKit/public/web/WebPrintParams.h"
#include "third_party/WebKit/public/web/WebView.h"
#include "ui/gfx/geometry/point.h"
namespace test_runner {
namespace {
struct PixelsDumpRequest {
PixelsDumpRequest(blink::WebView* web_view,
const LayoutTestRuntimeFlags& layout_test_runtime_flags,
const base::Callback<void(const SkBitmap&)>& callback)
: web_view(web_view),
layout_test_runtime_flags(layout_test_runtime_flags),
callback(callback) {}
blink::WebView* web_view;
const LayoutTestRuntimeFlags& layout_test_runtime_flags;
base::Callback<void(const SkBitmap&)> callback;
};
class CaptureCallback : public blink::WebCompositeAndReadbackAsyncCallback {
public:
CaptureCallback(const base::Callback<void(const SkBitmap&)>& callback);
virtual ~CaptureCallback();
void set_wait_for_popup(bool wait) { wait_for_popup_ = wait; }
void set_popup_position(const gfx::Point& position) {
popup_position_ = position;
}
// WebCompositeAndReadbackAsyncCallback implementation.
void didCompositeAndReadback(const SkBitmap& bitmap) override;
private:
base::Callback<void(const SkBitmap&)> callback_;
SkBitmap main_bitmap_;
bool wait_for_popup_;
gfx::Point popup_position_;
};
void DrawSelectionRect(const PixelsDumpRequest& dump_request,
SkCanvas* canvas) {
// See if we need to draw the selection bounds rect. Selection bounds
// rect is the rect enclosing the (possibly transformed) selection.
// The rect should be drawn after everything is laid out and painted.
if (!dump_request.layout_test_runtime_flags.dump_selection_rect())
return;
// If there is a selection rect - draw a red 1px border enclosing rect
blink::WebRect wr = dump_request.web_view->mainFrame()->selectionBoundsRect();
if (wr.isEmpty())
return;
// Render a red rectangle bounding selection rect
SkPaint paint;
paint.setColor(0xFFFF0000); // Fully opaque red
paint.setStyle(SkPaint::kStroke_Style);
paint.setFlags(SkPaint::kAntiAlias_Flag);
paint.setStrokeWidth(1.0f);
SkIRect rect; // Bounding rect
rect.set(wr.x, wr.y, wr.x + wr.width, wr.y + wr.height);
canvas->drawIRect(rect, paint);
}
void CapturePixelsForPrinting(std::unique_ptr<PixelsDumpRequest> dump_request) {
dump_request->web_view->updateAllLifecyclePhases();
blink::WebSize page_size_in_pixels = dump_request->web_view->size();
blink::WebFrame* web_frame = dump_request->web_view->mainFrame();
int page_count = web_frame->printBegin(page_size_in_pixels);
int totalHeight = page_count * (page_size_in_pixels.height + 1) - 1;
bool is_opaque = false;
std::unique_ptr<SkCanvas> canvas = skia::TryCreateBitmapCanvas(
page_size_in_pixels.width, totalHeight, is_opaque);
if (!canvas) {
LOG(ERROR) << "Failed to create canvas width="
<< page_size_in_pixels.width << " height=" << totalHeight;
dump_request->callback.Run(SkBitmap());
return;
}
web_frame->printPagesWithBoundaries(canvas.get(), page_size_in_pixels);
web_frame->printEnd();
DrawSelectionRect(*dump_request, canvas.get());
const SkBitmap bitmap = skia::ReadPixels(canvas.get());
dump_request->callback.Run(bitmap);
}
CaptureCallback::CaptureCallback(
const base::Callback<void(const SkBitmap&)>& callback)
: callback_(callback), wait_for_popup_(false) {}
CaptureCallback::~CaptureCallback() {}
void CaptureCallback::didCompositeAndReadback(const SkBitmap& bitmap) {
TRACE_EVENT2("shell", "CaptureCallback::didCompositeAndReadback", "x",
bitmap.info().width(), "y", bitmap.info().height());
if (!wait_for_popup_) {
callback_.Run(bitmap);
delete this;
return;
}
if (main_bitmap_.isNull()) {
bitmap.deepCopyTo(&main_bitmap_);
return;
}
SkCanvas canvas(main_bitmap_);
canvas.drawBitmap(bitmap, popup_position_.x(), popup_position_.y());
callback_.Run(main_bitmap_);
delete this;
}
void DidCapturePixelsAsync(std::unique_ptr<PixelsDumpRequest> dump_request,
const SkBitmap& bitmap) {
SkCanvas canvas(bitmap);
DrawSelectionRect(*dump_request, &canvas);
if (!dump_request->callback.is_null())
dump_request->callback.Run(bitmap);
}
} // namespace
void DumpPixelsAsync(blink::WebView* web_view,
const LayoutTestRuntimeFlags& layout_test_runtime_flags,
float device_scale_factor_for_test,
const base::Callback<void(const SkBitmap&)>& callback) {
TRACE_EVENT0("shell", "WebViewTestProxyBase::CapturePixelsAsync");
DCHECK(!callback.is_null());
DCHECK(!layout_test_runtime_flags.dump_drag_image());
std::unique_ptr<PixelsDumpRequest> pixels_request(
new PixelsDumpRequest(web_view, layout_test_runtime_flags, callback));
if (layout_test_runtime_flags.is_printing()) {
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::Bind(&CapturePixelsForPrinting,
base::Passed(std::move(pixels_request))));
return;
}
CaptureCallback* capture_callback = new CaptureCallback(base::Bind(
&DidCapturePixelsAsync, base::Passed(std::move(pixels_request))));
web_view->compositeAndReadbackAsync(capture_callback);
if (blink::WebPagePopup* popup = web_view->pagePopup()) {
capture_callback->set_wait_for_popup(true);
blink::WebPoint position = popup->positionRelativeToOwner();
position.x *= device_scale_factor_for_test;
position.y *= device_scale_factor_for_test;
capture_callback->set_popup_position(position);
popup->compositeAndReadbackAsync(capture_callback);
}
}
void CopyImageAtAndCapturePixels(
blink::WebView* web_view,
int x,
int y,
const base::Callback<void(const SkBitmap&)>& callback) {
DCHECK(!callback.is_null());
uint64_t sequence_number =
blink::Platform::current()->clipboard()->sequenceNumber(
blink::WebClipboard::Buffer());
// TODO(lukasza): Support image capture in OOPIFs for
// https://crbug.com/477150.
web_view->mainFrame()->toWebLocalFrame()->copyImageAt(blink::WebPoint(x, y));
if (sequence_number ==
blink::Platform::current()->clipboard()->sequenceNumber(
blink::WebClipboard::Buffer())) {
SkBitmap emptyBitmap;
callback.Run(emptyBitmap);
return;
}
blink::WebImage image = static_cast<blink::WebMockClipboard*>(
blink::Platform::current()->clipboard())
->readRawImage(blink::WebClipboard::Buffer());
const SkBitmap& bitmap = image.getSkBitmap();
SkAutoLockPixels autoLock(bitmap);
callback.Run(bitmap);
}
} // namespace test_runner
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