зеркало из https://github.com/mozilla/gecko-dev.git
190 строки
5.4 KiB
C++
190 строки
5.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsCOMPtr.h"
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#include "nsTitleBarFrame.h"
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "nsIDOMNodeList.h"
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#include "nsGkAtoms.h"
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#include "nsIWidget.h"
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#include "nsMenuPopupFrame.h"
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#include "nsPresContext.h"
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#include "nsIDocShell.h"
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#include "nsPIDOMWindow.h"
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#include "nsDisplayList.h"
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#include "nsContentUtils.h"
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#include "mozilla/MouseEvents.h"
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using namespace mozilla;
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//
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// NS_NewTitleBarFrame
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//
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// Creates a new TitleBar frame and returns it
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//
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nsIFrame*
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NS_NewTitleBarFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsTitleBarFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsTitleBarFrame)
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nsTitleBarFrame::nsTitleBarFrame(nsStyleContext* aContext, ClassID aID)
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: nsBoxFrame(aContext, aID, false)
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{
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mTrackingMouseMove = false;
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UpdateMouseThrough();
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}
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void
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nsTitleBarFrame::BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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// override, since we don't want children to get events
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if (aBuilder->IsForEventDelivery()) {
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if (!mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::allowevents,
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nsGkAtoms::_true, eCaseMatters))
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return;
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}
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nsBoxFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists);
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}
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nsresult
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nsTitleBarFrame::HandleEvent(nsPresContext* aPresContext,
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WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus)
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{
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NS_ENSURE_ARG_POINTER(aEventStatus);
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if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
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return NS_OK;
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}
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bool doDefault = true;
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switch (aEvent->mMessage) {
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case eMouseDown: {
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if (aEvent->AsMouseEvent()->button == WidgetMouseEvent::eLeftButton) {
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// titlebar has no effect in non-chrome shells
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nsCOMPtr<nsIDocShellTreeItem> dsti = aPresContext->GetDocShell();
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if (dsti) {
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if (dsti->ItemType() == nsIDocShellTreeItem::typeChrome) {
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// we're tracking.
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mTrackingMouseMove = true;
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// start capture.
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nsIPresShell::SetCapturingContent(GetContent(), CAPTURE_IGNOREALLOWED);
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// remember current mouse coordinates.
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mLastPoint = aEvent->mRefPoint;
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}
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}
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*aEventStatus = nsEventStatus_eConsumeNoDefault;
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doDefault = false;
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}
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}
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break;
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case eMouseUp: {
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if (mTrackingMouseMove &&
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aEvent->AsMouseEvent()->button == WidgetMouseEvent::eLeftButton) {
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// we're done tracking.
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mTrackingMouseMove = false;
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// end capture
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nsIPresShell::SetCapturingContent(nullptr, 0);
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*aEventStatus = nsEventStatus_eConsumeNoDefault;
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doDefault = false;
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}
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}
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break;
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case eMouseMove: {
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if(mTrackingMouseMove)
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{
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LayoutDeviceIntPoint nsMoveBy = aEvent->mRefPoint - mLastPoint;
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nsIFrame* parent = GetParent();
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while (parent) {
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nsMenuPopupFrame* popupFrame = do_QueryFrame(parent);
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if (popupFrame)
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break;
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parent = parent->GetParent();
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}
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// if the titlebar is in a popup, move the popup frame, otherwise
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// move the widget associated with the window
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if (parent) {
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nsMenuPopupFrame* menuPopupFrame = static_cast<nsMenuPopupFrame*>(parent);
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nsCOMPtr<nsIWidget> widget = menuPopupFrame->GetWidget();
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LayoutDeviceIntRect bounds = widget->GetScreenBounds();
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CSSPoint cssPos = (bounds.TopLeft() + nsMoveBy)
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/ aPresContext->CSSToDevPixelScale();
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menuPopupFrame->MoveTo(RoundedToInt(cssPos), false);
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}
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else {
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nsIPresShell* presShell = aPresContext->PresShell();
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nsPIDOMWindowOuter *window = presShell->GetDocument()->GetWindow();
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if (window) {
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window->MoveBy(nsMoveBy.x, nsMoveBy.y);
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}
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}
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*aEventStatus = nsEventStatus_eConsumeNoDefault;
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doDefault = false;
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}
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}
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break;
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case eMouseClick: {
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WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
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if (mouseEvent->IsLeftClickEvent()) {
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MouseClicked(mouseEvent);
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}
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break;
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}
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default:
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break;
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}
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if ( doDefault )
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return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
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else
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return NS_OK;
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}
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void
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nsTitleBarFrame::MouseClicked(WidgetMouseEvent* aEvent)
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{
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bool isTrusted = false;
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bool isShift = false;
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bool isControl = false;
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bool isAlt = false;
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bool isMeta = false;
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uint16_t inputSource = nsIDOMMouseEvent::MOZ_SOURCE_UNKNOWN;
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if(aEvent) {
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isShift = aEvent->IsShift();
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isControl = aEvent->IsControl();
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isAlt = aEvent->IsAlt();
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isMeta = aEvent->IsMeta();
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inputSource = aEvent->inputSource;
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}
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// Execute the oncommand event handler.
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nsContentUtils::DispatchXULCommand(mContent, isTrusted, nullptr,
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nullptr, isControl, isAlt,
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isShift, isMeta, inputSource);
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}
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