mirror of
https://github.com/mozilla/gecko-dev.git
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7e107d59a3
--HG-- rename : view/src/Makefile.in => view/Makefile.in rename : view/src/nsView.cpp => view/nsView.cpp rename : view/public/nsView.h => view/nsView.h rename : view/src/nsViewManager.cpp => view/nsViewManager.cpp rename : view/public/nsViewManager.h => view/nsViewManager.h
1102 lines
32 KiB
C++
1102 lines
32 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 "nsView.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/BasicEvents.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/IntegerPrintfMacros.h"
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#include "mozilla/Likely.h"
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#include "mozilla/Poison.h"
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#include "nsIWidget.h"
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#include "nsViewManager.h"
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#include "nsIFrame.h"
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#include "nsPresArena.h"
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#include "nsXULPopupManager.h"
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#include "nsIWidgetListener.h"
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#include "nsContentUtils.h" // for nsAutoScriptBlocker
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using namespace mozilla;
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nsView::nsView(nsViewManager* aViewManager, nsViewVisibility aVisibility)
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{
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MOZ_COUNT_CTOR(nsView);
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mVis = aVisibility;
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// Views should be transparent by default. Not being transparent is
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// a promise that the view will paint all its pixels opaquely. Views
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// should make this promise explicitly by calling
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// SetViewContentTransparency.
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mVFlags = 0;
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mViewManager = aViewManager;
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mDirtyRegion = nullptr;
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mWidgetIsTopLevel = false;
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}
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void nsView::DropMouseGrabbing()
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{
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nsIPresShell* presShell = mViewManager->GetPresShell();
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if (presShell)
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presShell->ClearMouseCaptureOnView(this);
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}
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nsView::~nsView()
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{
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MOZ_COUNT_DTOR(nsView);
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while (GetFirstChild())
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{
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nsView* child = GetFirstChild();
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if (child->GetViewManager() == mViewManager) {
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child->Destroy();
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} else {
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// just unhook it. Someone else will want to destroy this.
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RemoveChild(child);
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}
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}
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if (mViewManager)
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{
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DropMouseGrabbing();
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nsView *rootView = mViewManager->GetRootView();
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if (rootView)
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{
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// Root views can have parents!
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if (mParent)
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{
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mViewManager->RemoveChild(this);
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}
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if (rootView == this)
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{
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// Inform the view manager that the root view has gone away...
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mViewManager->SetRootView(nullptr);
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}
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}
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else if (mParent)
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{
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mParent->RemoveChild(this);
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}
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mViewManager = nullptr;
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}
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else if (mParent)
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{
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mParent->RemoveChild(this);
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}
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// Destroy and release the widget
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DestroyWidget();
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delete mDirtyRegion;
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}
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class DestroyWidgetRunnable : public nsRunnable {
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public:
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NS_DECL_NSIRUNNABLE
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explicit DestroyWidgetRunnable(nsIWidget* aWidget) : mWidget(aWidget) {}
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private:
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nsCOMPtr<nsIWidget> mWidget;
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};
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NS_IMETHODIMP DestroyWidgetRunnable::Run()
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{
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mWidget->Destroy();
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mWidget = nullptr;
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return NS_OK;
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}
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void nsView::DestroyWidget()
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{
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if (mWindow)
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{
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// If we are not attached to a base window, we're going to tear down our
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// widget here. However, if we're attached to somebody elses widget, we
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// want to leave the widget alone: don't reset the client data or call
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// Destroy. Just clear our event view ptr and free our reference to it.
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if (mWidgetIsTopLevel) {
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mWindow->SetAttachedWidgetListener(nullptr);
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}
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else {
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mWindow->SetWidgetListener(nullptr);
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nsCOMPtr<nsIRunnable> widgetDestroyer =
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new DestroyWidgetRunnable(mWindow);
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NS_DispatchToMainThread(widgetDestroyer);
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}
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NS_RELEASE(mWindow);
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}
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}
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nsView* nsView::GetViewFor(nsIWidget* aWidget)
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{
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NS_PRECONDITION(nullptr != aWidget, "null widget ptr");
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nsIWidgetListener* listener = aWidget->GetWidgetListener();
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if (listener) {
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nsView* view = listener->GetView();
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if (view)
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return view;
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}
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listener = aWidget->GetAttachedWidgetListener();
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return listener ? listener->GetView() : nullptr;
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}
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void nsView::Destroy()
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{
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this->~nsView();
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mozWritePoison(this, sizeof(*this));
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nsView::operator delete(this);
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}
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void nsView::SetPosition(nscoord aX, nscoord aY)
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{
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mDimBounds.x += aX - mPosX;
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mDimBounds.y += aY - mPosY;
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mPosX = aX;
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mPosY = aY;
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NS_ASSERTION(GetParent() || (aX == 0 && aY == 0),
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"Don't try to move the root widget to something non-zero");
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ResetWidgetBounds(true, false);
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}
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void nsView::ResetWidgetBounds(bool aRecurse, bool aForceSync)
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{
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if (mWindow) {
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if (!aForceSync) {
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// Don't change widget geometry synchronously, since that can
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// cause synchronous painting.
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mViewManager->PostPendingUpdate();
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} else {
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DoResetWidgetBounds(false, true);
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}
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return;
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}
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if (aRecurse) {
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// reposition any widgets under this view
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for (nsView* v = GetFirstChild(); v; v = v->GetNextSibling()) {
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v->ResetWidgetBounds(true, aForceSync);
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}
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}
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}
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bool nsView::IsEffectivelyVisible()
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{
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for (nsView* v = this; v; v = v->mParent) {
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if (v->GetVisibility() == nsViewVisibility_kHide)
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return false;
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}
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return true;
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}
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nsIntRect nsView::CalcWidgetBounds(nsWindowType aType)
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{
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int32_t p2a = mViewManager->AppUnitsPerDevPixel();
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nsRect viewBounds(mDimBounds);
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nsView* parent = GetParent();
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nsIWidget* parentWidget = nullptr;
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if (parent) {
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nsPoint offset;
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parentWidget = parent->GetNearestWidget(&offset, p2a);
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// make viewBounds be relative to the parent widget, in appunits
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viewBounds += offset;
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if (parentWidget && aType == eWindowType_popup &&
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IsEffectivelyVisible()) {
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// put offset into screen coordinates. (based on client area origin)
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nsIntPoint screenPoint = parentWidget->WidgetToScreenOffset();
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viewBounds += nsPoint(NSIntPixelsToAppUnits(screenPoint.x, p2a),
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NSIntPixelsToAppUnits(screenPoint.y, p2a));
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}
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}
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// Compute widget bounds in device pixels
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nsIntRect newBounds = viewBounds.ToNearestPixels(p2a);
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#ifdef XP_MACOSX
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// cocoa rounds widget coordinates to the nearest global "display pixel"
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// integer value. So we avoid fractional display pixel values by rounding
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// to the nearest value that won't yield a fractional display pixel.
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nsIWidget* widget = parentWidget ? parentWidget : mWindow;
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uint32_t round;
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if (aType == eWindowType_popup && widget &&
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((round = widget->RoundsWidgetCoordinatesTo()) > 1)) {
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nsIntSize pixelRoundedSize = newBounds.Size();
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// round the top left and bottom right to the nearest round pixel
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newBounds.x = NSToIntRoundUp(NSAppUnitsToDoublePixels(viewBounds.x, p2a) / round) * round;
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newBounds.y = NSToIntRoundUp(NSAppUnitsToDoublePixels(viewBounds.y, p2a) / round) * round;
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newBounds.width =
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NSToIntRoundUp(NSAppUnitsToDoublePixels(viewBounds.XMost(), p2a) / round) * round - newBounds.x;
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newBounds.height =
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NSToIntRoundUp(NSAppUnitsToDoublePixels(viewBounds.YMost(), p2a) / round) * round - newBounds.y;
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// but if that makes the widget larger then our frame may not paint the
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// extra pixels, so reduce the size to the nearest round value
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if (newBounds.width > pixelRoundedSize.width) {
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newBounds.width -= round;
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}
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if (newBounds.height > pixelRoundedSize.height) {
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newBounds.height -= round;
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}
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}
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#endif
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// Compute where the top-left of our widget ended up relative to the parent
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// widget, in appunits.
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nsPoint roundedOffset(NSIntPixelsToAppUnits(newBounds.x, p2a),
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NSIntPixelsToAppUnits(newBounds.y, p2a));
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// mViewToWidgetOffset is added to coordinates relative to the view origin
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// to get coordinates relative to the widget.
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// The view origin, relative to the parent widget, is at
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// (mPosX,mPosY) - mDimBounds.TopLeft() + viewBounds.TopLeft().
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// Our widget, relative to the parent widget, is roundedOffset.
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mViewToWidgetOffset = nsPoint(mPosX, mPosY)
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- mDimBounds.TopLeft() + viewBounds.TopLeft() - roundedOffset;
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return newBounds;
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}
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void nsView::DoResetWidgetBounds(bool aMoveOnly,
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bool aInvalidateChangedSize) {
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// The geometry of a root view's widget is controlled externally,
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// NOT by sizing or positioning the view
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if (mViewManager->GetRootView() == this) {
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return;
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}
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NS_PRECONDITION(mWindow, "Why was this called??");
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// Hold this ref to make sure it stays alive.
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nsCOMPtr<nsIWidget> widget = mWindow;
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// Stash a copy of these and use them so we can handle this being deleted (say
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// from sync painting/flushing from Show/Move/Resize on the widget).
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nsIntRect newBounds;
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nsRefPtr<nsDeviceContext> dx = mViewManager->GetDeviceContext();
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nsWindowType type = widget->WindowType();
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nsIntRect curBounds;
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widget->GetClientBounds(curBounds);
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bool invisiblePopup = type == eWindowType_popup &&
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((curBounds.IsEmpty() && mDimBounds.IsEmpty()) ||
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mVis == nsViewVisibility_kHide);
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if (invisiblePopup) {
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// We're going to hit the early exit below, avoid calling CalcWidgetBounds.
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} else {
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newBounds = CalcWidgetBounds(type);
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}
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bool curVisibility = widget->IsVisible();
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bool newVisibility = IsEffectivelyVisible();
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if (curVisibility && !newVisibility) {
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widget->Show(false);
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}
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if (invisiblePopup) {
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// Don't manipulate empty or hidden popup widgets. For example there's no
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// point moving hidden comboboxes around, or doing X server roundtrips
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// to compute their true screen position. This could mean that WidgetToScreen
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// operations on these widgets don't return up-to-date values, but popup
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// positions aren't reliable anyway because of correction to be on or off-screen.
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return;
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}
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bool changedPos = curBounds.TopLeft() != newBounds.TopLeft();
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bool changedSize = curBounds.Size() != newBounds.Size();
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// Child views are never attached to top level widgets, this is safe.
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// Coordinates are converted to display pixels for window Move/Resize APIs,
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// because of the potential for device-pixel coordinate spaces for mixed
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// hidpi/lodpi screens to overlap each other and result in bad placement
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// (bug 814434).
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double invScale;
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// Bug 861270: for correct widget manipulation at arbitrary scale factors,
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// prefer to base scaling on widget->GetDefaultScale(). But only do this if
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// it matches the view manager's device context scale after allowing for the
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// quantization to app units, because of OS X multiscreen issues (where the
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// only two scales are 1.0 or 2.0, and so the quantization doesn't actually
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// cause problems anyhow).
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// In the case of a mismatch, fall back to scaling based on the dev context's
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// unscaledAppUnitsPerDevPixel value. On platforms where the device-pixel
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// scale is uniform across all displays (currently all except OS X), we'll
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// always use the precise value from mWindow->GetDefaultScale here.
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CSSToLayoutDeviceScale scale = widget->GetDefaultScale();
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if (NSToIntRound(60.0 / scale.scale) == dx->UnscaledAppUnitsPerDevPixel()) {
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invScale = 1.0 / scale.scale;
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} else {
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invScale = dx->UnscaledAppUnitsPerDevPixel() / 60.0;
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}
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if (changedPos) {
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if (changedSize && !aMoveOnly) {
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widget->ResizeClient(newBounds.x * invScale,
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newBounds.y * invScale,
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newBounds.width * invScale,
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newBounds.height * invScale,
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aInvalidateChangedSize);
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} else {
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widget->MoveClient(newBounds.x * invScale,
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newBounds.y * invScale);
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}
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} else {
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if (changedSize && !aMoveOnly) {
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widget->ResizeClient(newBounds.width * invScale,
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newBounds.height * invScale,
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aInvalidateChangedSize);
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} // else do nothing!
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}
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if (!curVisibility && newVisibility) {
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widget->Show(true);
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}
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}
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void nsView::SetDimensions(const nsRect& aRect, bool aPaint, bool aResizeWidget)
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{
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nsRect dims = aRect;
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dims.MoveBy(mPosX, mPosY);
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// Don't use nsRect's operator== here, since it returns true when
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// both rects are empty even if they have different widths and we
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// have cases where that sort of thing matters to us.
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if (mDimBounds.TopLeft() == dims.TopLeft() &&
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mDimBounds.Size() == dims.Size()) {
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return;
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}
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mDimBounds = dims;
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if (aResizeWidget) {
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ResetWidgetBounds(false, false);
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}
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}
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void nsView::NotifyEffectiveVisibilityChanged(bool aEffectivelyVisible)
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{
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if (!aEffectivelyVisible)
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{
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DropMouseGrabbing();
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}
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SetForcedRepaint(true);
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if (nullptr != mWindow)
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{
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ResetWidgetBounds(false, false);
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}
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for (nsView* child = mFirstChild; child; child = child->mNextSibling) {
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if (child->mVis == nsViewVisibility_kHide) {
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// It was effectively hidden and still is
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continue;
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}
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// Our child is visible if we are
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child->NotifyEffectiveVisibilityChanged(aEffectivelyVisible);
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}
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}
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void nsView::SetVisibility(nsViewVisibility aVisibility)
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{
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mVis = aVisibility;
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NotifyEffectiveVisibilityChanged(IsEffectivelyVisible());
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}
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void nsView::SetFloating(bool aFloatingView)
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{
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if (aFloatingView)
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mVFlags |= NS_VIEW_FLAG_FLOATING;
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else
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mVFlags &= ~NS_VIEW_FLAG_FLOATING;
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}
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void nsView::InvalidateHierarchy(nsViewManager *aViewManagerParent)
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{
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if (mViewManager->GetRootView() == this)
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mViewManager->InvalidateHierarchy();
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for (nsView *child = mFirstChild; child; child = child->GetNextSibling())
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child->InvalidateHierarchy(aViewManagerParent);
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}
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void nsView::InsertChild(nsView *aChild, nsView *aSibling)
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{
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NS_PRECONDITION(nullptr != aChild, "null ptr");
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if (nullptr != aChild)
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{
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if (nullptr != aSibling)
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{
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#ifdef DEBUG
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NS_ASSERTION(aSibling->GetParent() == this, "tried to insert view with invalid sibling");
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#endif
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//insert after sibling
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aChild->SetNextSibling(aSibling->GetNextSibling());
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aSibling->SetNextSibling(aChild);
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}
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else
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{
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aChild->SetNextSibling(mFirstChild);
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mFirstChild = aChild;
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}
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aChild->SetParent(this);
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// If we just inserted a root view, then update the RootViewManager
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// on all view managers in the new subtree.
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nsViewManager *vm = aChild->GetViewManager();
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if (vm->GetRootView() == aChild)
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{
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aChild->InvalidateHierarchy(nullptr); // don't care about releasing grabs
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}
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}
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}
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void nsView::RemoveChild(nsView *child)
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{
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NS_PRECONDITION(nullptr != child, "null ptr");
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if (nullptr != child)
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{
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nsView* prevKid = nullptr;
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nsView* kid = mFirstChild;
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DebugOnly<bool> found = false;
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while (nullptr != kid) {
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if (kid == child) {
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if (nullptr != prevKid) {
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prevKid->SetNextSibling(kid->GetNextSibling());
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} else {
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mFirstChild = kid->GetNextSibling();
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}
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child->SetParent(nullptr);
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found = true;
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break;
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}
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prevKid = kid;
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kid = kid->GetNextSibling();
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}
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NS_ASSERTION(found, "tried to remove non child");
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// If we just removed a root view, then update the RootViewManager
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// on all view managers in the removed subtree.
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nsViewManager *vm = child->GetViewManager();
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if (vm->GetRootView() == child)
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{
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child->InvalidateHierarchy(GetViewManager());
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}
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}
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}
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// Native widgets ultimately just can't deal with the awesome power of
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// CSS2 z-index. However, we set the z-index on the widget anyway
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// because in many simple common cases the widgets do end up in the
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// right order. We set each widget's z-index to the z-index of the
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// nearest ancestor that has non-auto z-index.
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static void UpdateNativeWidgetZIndexes(nsView* aView, int32_t aZIndex)
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{
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if (aView->HasWidget()) {
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nsIWidget* widget = aView->GetWidget();
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if (widget->GetZIndex() != aZIndex) {
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widget->SetZIndex(aZIndex);
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}
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} else {
|
|
for (nsView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
if (v->GetZIndexIsAuto()) {
|
|
UpdateNativeWidgetZIndexes(v, aZIndex);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int32_t FindNonAutoZIndex(nsView* aView)
|
|
{
|
|
while (aView) {
|
|
if (!aView->GetZIndexIsAuto()) {
|
|
return aView->GetZIndex();
|
|
}
|
|
aView = aView->GetParent();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
struct DefaultWidgetInitData : public nsWidgetInitData {
|
|
DefaultWidgetInitData() : nsWidgetInitData()
|
|
{
|
|
mWindowType = eWindowType_child;
|
|
clipChildren = true;
|
|
clipSiblings = true;
|
|
}
|
|
};
|
|
|
|
nsresult nsView::CreateWidget(nsWidgetInitData *aWidgetInitData,
|
|
bool aEnableDragDrop,
|
|
bool aResetVisibility)
|
|
{
|
|
AssertNoWindow();
|
|
NS_ABORT_IF_FALSE(!aWidgetInitData ||
|
|
aWidgetInitData->mWindowType != eWindowType_popup,
|
|
"Use CreateWidgetForPopup");
|
|
|
|
DefaultWidgetInitData defaultInitData;
|
|
bool initDataPassedIn = !!aWidgetInitData;
|
|
aWidgetInitData = aWidgetInitData ? aWidgetInitData : &defaultInitData;
|
|
defaultInitData.mListenForResizes =
|
|
(!initDataPassedIn && GetParent() &&
|
|
GetParent()->GetViewManager() != mViewManager);
|
|
|
|
nsIntRect trect = CalcWidgetBounds(aWidgetInitData->mWindowType);
|
|
|
|
nsRefPtr<nsDeviceContext> dx = mViewManager->GetDeviceContext();
|
|
|
|
nsIWidget* parentWidget =
|
|
GetParent() ? GetParent()->GetNearestWidget(nullptr) : nullptr;
|
|
if (!parentWidget) {
|
|
NS_ERROR("nsView::CreateWidget without suitable parent widget??");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// XXX: using aForceUseIWidgetParent=true to preserve previous
|
|
// semantics. It's not clear that it's actually needed.
|
|
mWindow = parentWidget->CreateChild(trect, dx, aWidgetInitData,
|
|
true).take();
|
|
if (!mWindow) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
InitializeWindow(aEnableDragDrop, aResetVisibility);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsView::CreateWidgetForParent(nsIWidget* aParentWidget,
|
|
nsWidgetInitData *aWidgetInitData,
|
|
bool aEnableDragDrop,
|
|
bool aResetVisibility)
|
|
{
|
|
AssertNoWindow();
|
|
NS_ABORT_IF_FALSE(!aWidgetInitData ||
|
|
aWidgetInitData->mWindowType != eWindowType_popup,
|
|
"Use CreateWidgetForPopup");
|
|
NS_ABORT_IF_FALSE(aParentWidget, "Parent widget required");
|
|
|
|
DefaultWidgetInitData defaultInitData;
|
|
aWidgetInitData = aWidgetInitData ? aWidgetInitData : &defaultInitData;
|
|
|
|
nsIntRect trect = CalcWidgetBounds(aWidgetInitData->mWindowType);
|
|
|
|
nsRefPtr<nsDeviceContext> dx = mViewManager->GetDeviceContext();
|
|
|
|
mWindow =
|
|
aParentWidget->CreateChild(trect, dx, aWidgetInitData).take();
|
|
if (!mWindow) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
InitializeWindow(aEnableDragDrop, aResetVisibility);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsView::CreateWidgetForPopup(nsWidgetInitData *aWidgetInitData,
|
|
nsIWidget* aParentWidget,
|
|
bool aEnableDragDrop,
|
|
bool aResetVisibility)
|
|
{
|
|
AssertNoWindow();
|
|
NS_ABORT_IF_FALSE(aWidgetInitData, "Widget init data required");
|
|
NS_ABORT_IF_FALSE(aWidgetInitData->mWindowType == eWindowType_popup,
|
|
"Use one of the other CreateWidget methods");
|
|
|
|
nsIntRect trect = CalcWidgetBounds(aWidgetInitData->mWindowType);
|
|
|
|
nsRefPtr<nsDeviceContext> dx = mViewManager->GetDeviceContext();
|
|
|
|
// XXX/cjones: having these two separate creation cases seems ... um
|
|
// ... unnecessary, but it's the way the old code did it. Please
|
|
// unify them by first finding a suitable parent nsIWidget, then
|
|
// getting rid of aForceUseIWidgetParent.
|
|
if (aParentWidget) {
|
|
// XXX: using aForceUseIWidgetParent=true to preserve previous
|
|
// semantics. It's not clear that it's actually needed.
|
|
mWindow = aParentWidget->CreateChild(trect, dx, aWidgetInitData,
|
|
true).take();
|
|
}
|
|
else {
|
|
nsIWidget* nearestParent = GetParent() ? GetParent()->GetNearestWidget(nullptr)
|
|
: nullptr;
|
|
if (!nearestParent) {
|
|
// Without a parent, we can't make a popup. This can happen
|
|
// when printing
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
mWindow =
|
|
nearestParent->CreateChild(trect, dx, aWidgetInitData).take();
|
|
}
|
|
if (!mWindow) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
InitializeWindow(aEnableDragDrop, aResetVisibility);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsView::InitializeWindow(bool aEnableDragDrop, bool aResetVisibility)
|
|
{
|
|
NS_ABORT_IF_FALSE(mWindow, "Must have a window to initialize");
|
|
|
|
mWindow->SetWidgetListener(this);
|
|
|
|
if (aEnableDragDrop) {
|
|
mWindow->EnableDragDrop(true);
|
|
}
|
|
|
|
// propagate the z-index to the widget.
|
|
UpdateNativeWidgetZIndexes(this, FindNonAutoZIndex(this));
|
|
|
|
//make sure visibility state is accurate
|
|
|
|
if (aResetVisibility) {
|
|
SetVisibility(GetVisibility());
|
|
}
|
|
}
|
|
|
|
// Attach to a top level widget and start receiving mirrored events.
|
|
nsresult nsView::AttachToTopLevelWidget(nsIWidget* aWidget)
|
|
{
|
|
NS_PRECONDITION(nullptr != aWidget, "null widget ptr");
|
|
/// XXXjimm This is a temporary workaround to an issue w/document
|
|
// viewer (bug 513162).
|
|
nsIWidgetListener* listener = aWidget->GetAttachedWidgetListener();
|
|
if (listener) {
|
|
nsView *oldView = listener->GetView();
|
|
if (oldView) {
|
|
oldView->DetachFromTopLevelWidget();
|
|
}
|
|
}
|
|
|
|
nsRefPtr<nsDeviceContext> dx = mViewManager->GetDeviceContext();
|
|
|
|
// Note, the previous device context will be released. Detaching
|
|
// will not restore the old one.
|
|
nsresult rv = aWidget->AttachViewToTopLevel(!nsIWidget::UsePuppetWidgets(), dx);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
mWindow = aWidget;
|
|
NS_ADDREF(mWindow);
|
|
|
|
mWindow->SetAttachedWidgetListener(this);
|
|
mWindow->EnableDragDrop(true);
|
|
mWidgetIsTopLevel = true;
|
|
|
|
// Refresh the view bounds
|
|
CalcWidgetBounds(mWindow->WindowType());
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Detach this view from an attached widget.
|
|
nsresult nsView::DetachFromTopLevelWidget()
|
|
{
|
|
NS_PRECONDITION(mWidgetIsTopLevel, "Not attached currently!");
|
|
NS_PRECONDITION(mWindow, "null mWindow for DetachFromTopLevelWidget!");
|
|
|
|
mWindow->SetAttachedWidgetListener(nullptr);
|
|
NS_RELEASE(mWindow);
|
|
|
|
mWidgetIsTopLevel = false;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsView::SetZIndex(bool aAuto, int32_t aZIndex)
|
|
{
|
|
bool oldIsAuto = GetZIndexIsAuto();
|
|
mVFlags = (mVFlags & ~NS_VIEW_FLAG_AUTO_ZINDEX) | (aAuto ? NS_VIEW_FLAG_AUTO_ZINDEX : 0);
|
|
mZIndex = aZIndex;
|
|
|
|
if (HasWidget() || !oldIsAuto || !aAuto) {
|
|
UpdateNativeWidgetZIndexes(this, FindNonAutoZIndex(this));
|
|
}
|
|
}
|
|
|
|
void nsView::AssertNoWindow()
|
|
{
|
|
// XXX: it would be nice to make this a strong assert
|
|
if (MOZ_UNLIKELY(mWindow)) {
|
|
NS_ERROR("We already have a window for this view? BAD");
|
|
mWindow->SetWidgetListener(nullptr);
|
|
mWindow->Destroy();
|
|
NS_RELEASE(mWindow);
|
|
}
|
|
}
|
|
|
|
//
|
|
// internal window creation functions
|
|
//
|
|
void nsView::AttachWidgetEventHandler(nsIWidget* aWidget)
|
|
{
|
|
#ifdef DEBUG
|
|
NS_ASSERTION(!aWidget->GetWidgetListener(), "Already have a widget listener");
|
|
#endif
|
|
|
|
aWidget->SetWidgetListener(this);
|
|
}
|
|
|
|
void nsView::DetachWidgetEventHandler(nsIWidget* aWidget)
|
|
{
|
|
NS_ASSERTION(!aWidget->GetWidgetListener() ||
|
|
aWidget->GetWidgetListener()->GetView() == this, "Wrong view");
|
|
aWidget->SetWidgetListener(nullptr);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void nsView::List(FILE* out, int32_t aIndent) const
|
|
{
|
|
int32_t i;
|
|
for (i = aIndent; --i >= 0; ) fputs(" ", out);
|
|
fprintf(out, "%p ", (void*)this);
|
|
if (nullptr != mWindow) {
|
|
nscoord p2a = mViewManager->AppUnitsPerDevPixel();
|
|
nsIntRect rect;
|
|
mWindow->GetClientBounds(rect);
|
|
nsRect windowBounds = rect.ToAppUnits(p2a);
|
|
mWindow->GetBounds(rect);
|
|
nsRect nonclientBounds = rect.ToAppUnits(p2a);
|
|
nsrefcnt widgetRefCnt = mWindow->AddRef() - 1;
|
|
mWindow->Release();
|
|
int32_t Z = mWindow->GetZIndex();
|
|
fprintf(out, "(widget=%p[%" PRIuPTR "] z=%d pos={%d,%d,%d,%d}) ",
|
|
(void*)mWindow, widgetRefCnt, Z,
|
|
nonclientBounds.x, nonclientBounds.y,
|
|
windowBounds.width, windowBounds.height);
|
|
}
|
|
nsRect brect = GetBounds();
|
|
fprintf(out, "{%d,%d,%d,%d}",
|
|
brect.x, brect.y, brect.width, brect.height);
|
|
fprintf(out, " z=%d vis=%d frame=%p <\n",
|
|
mZIndex, mVis, static_cast<void*>(mFrame));
|
|
for (nsView* kid = mFirstChild; kid; kid = kid->GetNextSibling()) {
|
|
NS_ASSERTION(kid->GetParent() == this, "incorrect parent");
|
|
kid->List(out, aIndent + 1);
|
|
}
|
|
for (i = aIndent; --i >= 0; ) fputs(" ", out);
|
|
fputs(">\n", out);
|
|
}
|
|
#endif // DEBUG
|
|
|
|
nsPoint nsView::GetOffsetTo(const nsView* aOther) const
|
|
{
|
|
return GetOffsetTo(aOther, GetViewManager()->AppUnitsPerDevPixel());
|
|
}
|
|
|
|
nsPoint nsView::GetOffsetTo(const nsView* aOther, const int32_t aAPD) const
|
|
{
|
|
NS_ABORT_IF_FALSE(GetParent() || !aOther || aOther->GetParent() ||
|
|
this == aOther, "caller of (outer) GetOffsetTo must not "
|
|
"pass unrelated views");
|
|
// We accumulate the final result in offset
|
|
nsPoint offset(0, 0);
|
|
// The offset currently accumulated at the current APD
|
|
nsPoint docOffset(0, 0);
|
|
const nsView* v = this;
|
|
nsViewManager* currVM = v->GetViewManager();
|
|
int32_t currAPD = currVM->AppUnitsPerDevPixel();
|
|
const nsView* root = nullptr;
|
|
for ( ; v != aOther && v; root = v, v = v->GetParent()) {
|
|
nsViewManager* newVM = v->GetViewManager();
|
|
if (newVM != currVM) {
|
|
int32_t newAPD = newVM->AppUnitsPerDevPixel();
|
|
if (newAPD != currAPD) {
|
|
offset += docOffset.ConvertAppUnits(currAPD, aAPD);
|
|
docOffset.x = docOffset.y = 0;
|
|
currAPD = newAPD;
|
|
}
|
|
currVM = newVM;
|
|
}
|
|
docOffset += v->GetPosition();
|
|
}
|
|
offset += docOffset.ConvertAppUnits(currAPD, aAPD);
|
|
|
|
if (v != aOther) {
|
|
// Looks like aOther wasn't an ancestor of |this|. So now we have
|
|
// the root-VM-relative position of |this| in |offset|. Get the
|
|
// root-VM-relative position of aOther and subtract it.
|
|
nsPoint negOffset = aOther->GetOffsetTo(root, aAPD);
|
|
offset -= negOffset;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
nsPoint nsView::GetOffsetToWidget(nsIWidget* aWidget) const
|
|
{
|
|
nsPoint pt;
|
|
// Get the view for widget
|
|
nsView* widgetView = GetViewFor(aWidget);
|
|
if (!widgetView) {
|
|
return pt;
|
|
}
|
|
|
|
// Get the offset to the widget view in the widget view's APD
|
|
// We get the offset in the widget view's APD first and then convert to our
|
|
// APD afterwards so that we can include the widget view's ViewToWidgetOffset
|
|
// in the sum in its native APD, and then convert the whole thing to our APD
|
|
// so that we don't have to convert the APD of the relatively small
|
|
// ViewToWidgetOffset by itself with a potentially large relative rounding
|
|
// error.
|
|
pt = -widgetView->GetOffsetTo(this);
|
|
// Add in the offset to the widget.
|
|
pt += widgetView->ViewToWidgetOffset();
|
|
|
|
// Convert to our appunits.
|
|
int32_t widgetAPD = widgetView->GetViewManager()->AppUnitsPerDevPixel();
|
|
int32_t ourAPD = GetViewManager()->AppUnitsPerDevPixel();
|
|
pt = pt.ConvertAppUnits(widgetAPD, ourAPD);
|
|
return pt;
|
|
}
|
|
|
|
nsIWidget* nsView::GetNearestWidget(nsPoint* aOffset) const
|
|
{
|
|
return GetNearestWidget(aOffset, GetViewManager()->AppUnitsPerDevPixel());
|
|
}
|
|
|
|
nsIWidget* nsView::GetNearestWidget(nsPoint* aOffset, const int32_t aAPD) const
|
|
{
|
|
// aOffset is based on the view's position, which ignores any chrome on
|
|
// attached parent widgets.
|
|
|
|
// We accumulate the final result in pt
|
|
nsPoint pt(0, 0);
|
|
// The offset currently accumulated at the current APD
|
|
nsPoint docPt(0,0);
|
|
const nsView* v = this;
|
|
nsViewManager* currVM = v->GetViewManager();
|
|
int32_t currAPD = currVM->AppUnitsPerDevPixel();
|
|
for ( ; v && !v->HasWidget(); v = v->GetParent()) {
|
|
nsViewManager* newVM = v->GetViewManager();
|
|
if (newVM != currVM) {
|
|
int32_t newAPD = newVM->AppUnitsPerDevPixel();
|
|
if (newAPD != currAPD) {
|
|
pt += docPt.ConvertAppUnits(currAPD, aAPD);
|
|
docPt.x = docPt.y = 0;
|
|
currAPD = newAPD;
|
|
}
|
|
currVM = newVM;
|
|
}
|
|
docPt += v->GetPosition();
|
|
}
|
|
if (!v) {
|
|
if (aOffset) {
|
|
pt += docPt.ConvertAppUnits(currAPD, aAPD);
|
|
*aOffset = pt;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
// pt is now the offset from v's origin to this view's origin.
|
|
// We add the ViewToWidgetOffset to get the offset to the widget.
|
|
if (aOffset) {
|
|
docPt += v->ViewToWidgetOffset();
|
|
pt += docPt.ConvertAppUnits(currAPD, aAPD);
|
|
*aOffset = pt;
|
|
}
|
|
return v->GetWidget();
|
|
}
|
|
|
|
bool nsView::IsRoot() const
|
|
{
|
|
NS_ASSERTION(mViewManager != nullptr," View manager is null in nsView::IsRoot()");
|
|
return mViewManager->GetRootView() == this;
|
|
}
|
|
|
|
nsRect
|
|
nsView::GetBoundsInParentUnits() const
|
|
{
|
|
nsView* parent = GetParent();
|
|
nsViewManager* VM = GetViewManager();
|
|
if (this != VM->GetRootView() || !parent) {
|
|
return mDimBounds;
|
|
}
|
|
int32_t ourAPD = VM->AppUnitsPerDevPixel();
|
|
int32_t parentAPD = parent->GetViewManager()->AppUnitsPerDevPixel();
|
|
return mDimBounds.ConvertAppUnitsRoundOut(ourAPD, parentAPD);
|
|
}
|
|
|
|
nsPoint
|
|
nsView::ConvertFromParentCoords(nsPoint aPt) const
|
|
{
|
|
const nsView* parent = GetParent();
|
|
if (parent) {
|
|
aPt = aPt.ConvertAppUnits(parent->GetViewManager()->AppUnitsPerDevPixel(),
|
|
GetViewManager()->AppUnitsPerDevPixel());
|
|
}
|
|
aPt -= GetPosition();
|
|
return aPt;
|
|
}
|
|
|
|
static bool
|
|
IsPopupWidget(nsIWidget* aWidget)
|
|
{
|
|
return (aWidget->WindowType() == eWindowType_popup);
|
|
}
|
|
|
|
nsIPresShell*
|
|
nsView::GetPresShell()
|
|
{
|
|
return GetViewManager()->GetPresShell();
|
|
}
|
|
|
|
bool
|
|
nsView::WindowMoved(nsIWidget* aWidget, int32_t x, int32_t y)
|
|
{
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm && IsPopupWidget(aWidget)) {
|
|
pm->PopupMoved(mFrame, nsIntPoint(x, y));
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsView::WindowResized(nsIWidget* aWidget, int32_t aWidth, int32_t aHeight)
|
|
{
|
|
// The root view may not be set if this is the resize associated with
|
|
// window creation
|
|
SetForcedRepaint(true);
|
|
if (this == mViewManager->GetRootView()) {
|
|
nsRefPtr<nsDeviceContext> devContext = mViewManager->GetDeviceContext();
|
|
// ensure DPI is up-to-date, in case of window being opened and sized
|
|
// on a non-default-dpi display (bug 829963)
|
|
devContext->CheckDPIChange();
|
|
int32_t p2a = devContext->AppUnitsPerDevPixel();
|
|
mViewManager->SetWindowDimensions(NSIntPixelsToAppUnits(aWidth, p2a),
|
|
NSIntPixelsToAppUnits(aHeight, p2a));
|
|
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) {
|
|
nsIPresShell* presShell = mViewManager->GetPresShell();
|
|
if (presShell && presShell->GetDocument()) {
|
|
pm->AdjustPopupsOnWindowChange(presShell);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
else if (IsPopupWidget(aWidget)) {
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) {
|
|
pm->PopupResized(mFrame, nsIntSize(aWidth, aHeight));
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsView::RequestWindowClose(nsIWidget* aWidget)
|
|
{
|
|
if (mFrame && IsPopupWidget(aWidget) &&
|
|
mFrame->GetType() == nsGkAtoms::menuPopupFrame) {
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) {
|
|
pm->HidePopup(mFrame->GetContent(), false, true, false, false);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
nsView::WillPaintWindow(nsIWidget* aWidget)
|
|
{
|
|
nsRefPtr<nsViewManager> vm = mViewManager;
|
|
vm->WillPaintWindow(aWidget);
|
|
}
|
|
|
|
bool
|
|
nsView::PaintWindow(nsIWidget* aWidget, nsIntRegion aRegion)
|
|
{
|
|
NS_ASSERTION(this == nsView::GetViewFor(aWidget), "wrong view for widget?");
|
|
|
|
nsRefPtr<nsViewManager> vm = mViewManager;
|
|
bool result = vm->PaintWindow(aWidget, aRegion);
|
|
return result;
|
|
}
|
|
|
|
void
|
|
nsView::DidPaintWindow()
|
|
{
|
|
nsRefPtr<nsViewManager> vm = mViewManager;
|
|
vm->DidPaintWindow();
|
|
}
|
|
|
|
void
|
|
nsView::DidCompositeWindow()
|
|
{
|
|
nsIPresShell* presShell = mViewManager->GetPresShell();
|
|
if (presShell) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
presShell->GetPresContext()->GetDisplayRootPresContext()->GetRootPresContext()->NotifyDidPaintForSubtree(nsIPresShell::PAINT_COMPOSITE);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsView::RequestRepaint()
|
|
{
|
|
nsIPresShell* presShell = mViewManager->GetPresShell();
|
|
if (presShell) {
|
|
presShell->ScheduleViewManagerFlush();
|
|
}
|
|
}
|
|
|
|
nsEventStatus
|
|
nsView::HandleEvent(WidgetGUIEvent* aEvent,
|
|
bool aUseAttachedEvents)
|
|
{
|
|
NS_PRECONDITION(nullptr != aEvent->widget, "null widget ptr");
|
|
|
|
nsEventStatus result = nsEventStatus_eIgnore;
|
|
nsView* view;
|
|
if (aUseAttachedEvents) {
|
|
nsIWidgetListener* listener = aEvent->widget->GetAttachedWidgetListener();
|
|
view = listener ? listener->GetView() : nullptr;
|
|
}
|
|
else {
|
|
view = GetViewFor(aEvent->widget);
|
|
}
|
|
|
|
if (view) {
|
|
nsRefPtr<nsViewManager> vm = view->GetViewManager();
|
|
vm->DispatchEvent(aEvent, view, &result);
|
|
}
|
|
|
|
return result;
|
|
}
|