1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/nsTitleBarFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,172 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "nsCOMPtr.h"
1.10 +#include "nsTitleBarFrame.h"
1.11 +#include "nsIContent.h"
1.12 +#include "nsIDocument.h"
1.13 +#include "nsIDOMNodeList.h"
1.14 +#include "nsGkAtoms.h"
1.15 +#include "nsIWidget.h"
1.16 +#include "nsMenuPopupFrame.h"
1.17 +#include "nsPresContext.h"
1.18 +#include "nsIDocShell.h"
1.19 +#include "nsPIDOMWindow.h"
1.20 +#include "nsDisplayList.h"
1.21 +#include "nsContentUtils.h"
1.22 +#include "mozilla/MouseEvents.h"
1.23 +
1.24 +using namespace mozilla;
1.25 +
1.26 +//
1.27 +// NS_NewTitleBarFrame
1.28 +//
1.29 +// Creates a new TitleBar frame and returns it
1.30 +//
1.31 +nsIFrame*
1.32 +NS_NewTitleBarFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.33 +{
1.34 + return new (aPresShell) nsTitleBarFrame(aPresShell, aContext);
1.35 +}
1.36 +
1.37 +NS_IMPL_FRAMEARENA_HELPERS(nsTitleBarFrame)
1.38 +
1.39 +nsTitleBarFrame::nsTitleBarFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.40 +:nsBoxFrame(aPresShell, aContext, false)
1.41 +{
1.42 + mTrackingMouseMove = false;
1.43 + UpdateMouseThrough();
1.44 +}
1.45 +
1.46 +void
1.47 +nsTitleBarFrame::BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
1.48 + const nsRect& aDirtyRect,
1.49 + const nsDisplayListSet& aLists)
1.50 +{
1.51 + // override, since we don't want children to get events
1.52 + if (aBuilder->IsForEventDelivery()) {
1.53 + if (!mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::allowevents,
1.54 + nsGkAtoms::_true, eCaseMatters))
1.55 + return;
1.56 + }
1.57 + nsBoxFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists);
1.58 +}
1.59 +
1.60 +nsresult
1.61 +nsTitleBarFrame::HandleEvent(nsPresContext* aPresContext,
1.62 + WidgetGUIEvent* aEvent,
1.63 + nsEventStatus* aEventStatus)
1.64 +{
1.65 + NS_ENSURE_ARG_POINTER(aEventStatus);
1.66 + if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
1.67 + return NS_OK;
1.68 + }
1.69 +
1.70 + bool doDefault = true;
1.71 +
1.72 + switch (aEvent->message) {
1.73 +
1.74 + case NS_MOUSE_BUTTON_DOWN: {
1.75 + if (aEvent->AsMouseEvent()->button == WidgetMouseEvent::eLeftButton) {
1.76 + // titlebar has no effect in non-chrome shells
1.77 + nsCOMPtr<nsIDocShellTreeItem> dsti = aPresContext->GetDocShell();
1.78 + if (dsti) {
1.79 + if (dsti->ItemType() == nsIDocShellTreeItem::typeChrome) {
1.80 + // we're tracking.
1.81 + mTrackingMouseMove = true;
1.82 +
1.83 + // start capture.
1.84 + nsIPresShell::SetCapturingContent(GetContent(), CAPTURE_IGNOREALLOWED);
1.85 +
1.86 + // remember current mouse coordinates.
1.87 + mLastPoint = LayoutDeviceIntPoint::ToUntyped(aEvent->refPoint);
1.88 + }
1.89 + }
1.90 +
1.91 + *aEventStatus = nsEventStatus_eConsumeNoDefault;
1.92 + doDefault = false;
1.93 + }
1.94 + }
1.95 + break;
1.96 +
1.97 +
1.98 + case NS_MOUSE_BUTTON_UP: {
1.99 + if (mTrackingMouseMove &&
1.100 + aEvent->AsMouseEvent()->button == WidgetMouseEvent::eLeftButton) {
1.101 + // we're done tracking.
1.102 + mTrackingMouseMove = false;
1.103 +
1.104 + // end capture
1.105 + nsIPresShell::SetCapturingContent(nullptr, 0);
1.106 +
1.107 + *aEventStatus = nsEventStatus_eConsumeNoDefault;
1.108 + doDefault = false;
1.109 + }
1.110 + }
1.111 + break;
1.112 +
1.113 + case NS_MOUSE_MOVE: {
1.114 + if(mTrackingMouseMove)
1.115 + {
1.116 + nsIntPoint nsMoveBy = LayoutDeviceIntPoint::ToUntyped(aEvent->refPoint) - mLastPoint;
1.117 +
1.118 + nsIFrame* parent = GetParent();
1.119 + while (parent) {
1.120 + nsMenuPopupFrame* popupFrame = do_QueryFrame(parent);
1.121 + if (popupFrame)
1.122 + break;
1.123 + parent = parent->GetParent();
1.124 + }
1.125 +
1.126 + // if the titlebar is in a popup, move the popup frame, otherwise
1.127 + // move the widget associated with the window
1.128 + if (parent) {
1.129 + nsMenuPopupFrame* menuPopupFrame = static_cast<nsMenuPopupFrame*>(parent);
1.130 + nsCOMPtr<nsIWidget> widget = menuPopupFrame->GetWidget();
1.131 + nsIntRect bounds;
1.132 + widget->GetScreenBounds(bounds);
1.133 +
1.134 + int32_t newx = aPresContext->DevPixelsToIntCSSPixels(bounds.x + nsMoveBy.x);
1.135 + int32_t newy = aPresContext->DevPixelsToIntCSSPixels(bounds.y + nsMoveBy.y);
1.136 + menuPopupFrame->MoveTo(newx, newy, false);
1.137 + }
1.138 + else {
1.139 + nsIPresShell* presShell = aPresContext->PresShell();
1.140 + nsPIDOMWindow *window = presShell->GetDocument()->GetWindow();
1.141 + if (window) {
1.142 + window->MoveBy(nsMoveBy.x, nsMoveBy.y);
1.143 + }
1.144 + }
1.145 +
1.146 + *aEventStatus = nsEventStatus_eConsumeNoDefault;
1.147 +
1.148 + doDefault = false;
1.149 + }
1.150 + }
1.151 + break;
1.152 +
1.153 + case NS_MOUSE_CLICK: {
1.154 + WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
1.155 + if (mouseEvent->IsLeftClickEvent()) {
1.156 + MouseClicked(aPresContext, mouseEvent);
1.157 + }
1.158 + break;
1.159 + }
1.160 + }
1.161 +
1.162 + if ( doDefault )
1.163 + return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
1.164 + else
1.165 + return NS_OK;
1.166 +}
1.167 +
1.168 +void
1.169 +nsTitleBarFrame::MouseClicked(nsPresContext* aPresContext,
1.170 + WidgetMouseEvent* aEvent)
1.171 +{
1.172 + // Execute the oncommand event handler.
1.173 + nsContentUtils::DispatchXULCommand(mContent,
1.174 + aEvent && aEvent->mFlags.mIsTrusted);
1.175 +}
