187 lines
5.2 KiB
C++
187 lines
5.2 KiB
C++
/*
|
|
* Copyright (C) 2017 Google Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
* THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "VisualViewport.h"
|
|
|
|
#include "ContextDestructionObserver.h"
|
|
#include "DOMWindow.h"
|
|
#include "Document.h"
|
|
#include "Event.h"
|
|
#include "EventNames.h"
|
|
#include "Frame.h"
|
|
#include "FrameView.h"
|
|
#include "Page.h"
|
|
#include <wtf/IsoMallocInlines.h>
|
|
|
|
namespace WebCore {
|
|
|
|
WTF_MAKE_ISO_ALLOCATED_IMPL(VisualViewport);
|
|
|
|
VisualViewport::VisualViewport(DOMWindow& window)
|
|
: DOMWindowProperty(&window)
|
|
{
|
|
}
|
|
|
|
EventTargetInterface VisualViewport::eventTargetInterface() const
|
|
{
|
|
return VisualViewportEventTargetInterfaceType;
|
|
}
|
|
|
|
ScriptExecutionContext* VisualViewport::scriptExecutionContext() const
|
|
{
|
|
auto window = this->window();
|
|
if (!window)
|
|
return nullptr;
|
|
return static_cast<ContextDestructionObserver*>(window)->scriptExecutionContext();
|
|
}
|
|
|
|
bool VisualViewport::addEventListener(const AtomString& eventType, Ref<EventListener>&& listener, const AddEventListenerOptions& options)
|
|
{
|
|
if (!EventTarget::addEventListener(eventType, WTFMove(listener), options))
|
|
return false;
|
|
|
|
if (auto* frame = this->frame())
|
|
frame->document()->addListenerTypeIfNeeded(eventType);
|
|
return true;
|
|
}
|
|
|
|
void VisualViewport::updateFrameLayout() const
|
|
{
|
|
ASSERT(frame());
|
|
frame()->document()->updateLayoutIgnorePendingStylesheets(Document::RunPostLayoutTasks::Synchronously);
|
|
}
|
|
|
|
double VisualViewport::offsetLeft() const
|
|
{
|
|
if (!frame())
|
|
return 0;
|
|
|
|
updateFrameLayout();
|
|
return m_offsetLeft;
|
|
}
|
|
|
|
double VisualViewport::offsetTop() const
|
|
{
|
|
if (!frame())
|
|
return 0;
|
|
|
|
updateFrameLayout();
|
|
return m_offsetTop;
|
|
}
|
|
|
|
double VisualViewport::pageLeft() const
|
|
{
|
|
if (!frame())
|
|
return 0;
|
|
|
|
updateFrameLayout();
|
|
return m_pageLeft;
|
|
}
|
|
|
|
double VisualViewport::pageTop() const
|
|
{
|
|
if (!frame())
|
|
return 0;
|
|
|
|
updateFrameLayout();
|
|
return m_pageTop;
|
|
}
|
|
|
|
double VisualViewport::width() const
|
|
{
|
|
if (!frame())
|
|
return 0;
|
|
|
|
updateFrameLayout();
|
|
return m_width;
|
|
}
|
|
|
|
double VisualViewport::height() const
|
|
{
|
|
if (!frame())
|
|
return 0;
|
|
|
|
updateFrameLayout();
|
|
return m_height;
|
|
}
|
|
|
|
double VisualViewport::scale() const
|
|
{
|
|
// Subframes always have scale 1 since they aren't scaled relative to their parent frame.
|
|
auto* frame = this->frame();
|
|
if (!frame || !frame->isMainFrame())
|
|
return 1;
|
|
|
|
updateFrameLayout();
|
|
return m_scale;
|
|
}
|
|
|
|
void VisualViewport::update()
|
|
{
|
|
double offsetLeft = 0;
|
|
double offsetTop = 0;
|
|
m_pageLeft = 0;
|
|
m_pageTop = 0;
|
|
double width = 0;
|
|
double height = 0;
|
|
double scale = 1;
|
|
|
|
auto frame = makeRefPtr(this->frame());
|
|
if (frame) {
|
|
if (auto* view = frame->view()) {
|
|
auto visualViewportRect = view->visualViewportRect();
|
|
auto layoutViewportRect = view->layoutViewportRect();
|
|
auto pageZoomFactor = frame->pageZoomFactor();
|
|
ASSERT(pageZoomFactor);
|
|
offsetLeft = (visualViewportRect.x() - layoutViewportRect.x()) / pageZoomFactor;
|
|
offsetTop = (visualViewportRect.y() - layoutViewportRect.y()) / pageZoomFactor;
|
|
m_pageLeft = visualViewportRect.x() / pageZoomFactor;
|
|
m_pageTop = visualViewportRect.y() / pageZoomFactor;
|
|
width = visualViewportRect.width() / pageZoomFactor;
|
|
height = visualViewportRect.height() / pageZoomFactor;
|
|
}
|
|
if (auto* page = frame->page())
|
|
scale = page->pageScaleFactor();
|
|
}
|
|
|
|
RefPtr<Document> document = frame ? frame->document() : nullptr;
|
|
if (m_offsetLeft != offsetLeft || m_offsetTop != offsetTop) {
|
|
if (document)
|
|
document->setNeedsVisualViewportScrollEvent();
|
|
m_offsetLeft = offsetLeft;
|
|
m_offsetTop = offsetTop;
|
|
}
|
|
if (m_width != width || m_height != height || m_scale != scale) {
|
|
if (document)
|
|
document->setNeedsVisualViewportResize();
|
|
m_width = width;
|
|
m_height = height;
|
|
m_scale = scale;
|
|
}
|
|
}
|
|
|
|
} // namespace WebCore
|