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8d6e6842c0
This comes back to ~since forever, since absolutely positioned elements used to have views. But now is basically only plumbed from nsMenuPopupFrame to nsIWidget. The main issue is that that concept is basically fiction nowadays: * Wayland can't reorder popups. * macOS doesn't implement it because SetZIndex calls PlaceBehind which only has a windows impl. * Unclear whether it works properly on Windows as well. Also, the front-end never sets it anyways. So remove this fiction to simplify relevant code. We might want to provide a z-ordering of popups somehow else, but it should probably live in nsXULPopupManager etc rather than nsView. Differential Revision: https://phabricator.services.mozilla.com/D213598
966 lines
30 KiB
C++
966 lines
30 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 "nsViewManager.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/PresShellInlines.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/ProfilerLabels.h"
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#include "mozilla/StartupTimeline.h"
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#include "mozilla/dom/Document.h"
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#include "nsGfxCIID.h"
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#include "nsView.h"
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#include "nsCOMPtr.h"
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#include "nsRegion.h"
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#include "nsCOMArray.h"
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#include "nsXULPopupManager.h"
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#include "nsPresContext.h"
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#include "nsRefreshDriver.h"
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#include "nsContentUtils.h" // for nsAutoScriptBlocker
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#include "nsLayoutUtils.h"
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#include "gfxPlatform.h"
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#include "WindowRenderer.h"
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/**
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XXX TODO XXX
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DeCOMify newly private methods
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Optimize view storage
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*/
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/**
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A note about platform assumptions:
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We assume that a widget is z-ordered on top of its parent.
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We do NOT assume anything about the relative z-ordering of sibling widgets.
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Even though we ask for a specific z-order, we don't assume that widget
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z-ordering actually works.
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*/
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using namespace mozilla;
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using namespace mozilla::layers;
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#define NSCOORD_NONE INT32_MIN
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#undef DEBUG_MOUSE_LOCATION
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uint32_t nsViewManager::gLastUserEventTime = 0;
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nsViewManager::nsViewManager()
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: mPresShell(nullptr),
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mDelayedResize(NSCOORD_NONE, NSCOORD_NONE),
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mRootView(nullptr),
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mRefreshDisableCount(0),
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mPainting(false),
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mRecursiveRefreshPending(false),
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mHasPendingWidgetGeometryChanges(false) {}
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nsViewManager::~nsViewManager() {
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if (mRootView) {
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// Destroy any remaining views
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mRootView->Destroy();
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mRootView = nullptr;
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}
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mRootViewManager = nullptr;
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MOZ_RELEASE_ASSERT(!mPresShell,
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"Releasing nsViewManager without having called Destroy on "
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"the PresShell!");
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}
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// We don't hold a reference to the presentation context because it
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// holds a reference to us.
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nsresult nsViewManager::Init(nsDeviceContext* aContext) {
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MOZ_ASSERT(nullptr != aContext, "null ptr");
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if (nullptr == aContext) {
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return NS_ERROR_NULL_POINTER;
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}
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if (nullptr != mContext) {
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return NS_ERROR_ALREADY_INITIALIZED;
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}
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mContext = aContext;
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return NS_OK;
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}
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nsView* nsViewManager::CreateView(const nsRect& aBounds, nsView* aParent,
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ViewVisibility aVisibilityFlag) {
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auto* v = new nsView(this, aVisibilityFlag);
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v->SetParent(aParent);
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v->SetPosition(aBounds.X(), aBounds.Y());
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nsRect dim(0, 0, aBounds.Width(), aBounds.Height());
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v->SetDimensions(dim, false);
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return v;
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}
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void nsViewManager::SetRootView(nsView* aView) {
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MOZ_ASSERT(!aView || aView->GetViewManager() == this,
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"Unexpected viewmanager on root view");
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// Do NOT destroy the current root view. It's the caller's responsibility
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// to destroy it
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mRootView = aView;
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if (mRootView) {
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nsView* parent = mRootView->GetParent();
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if (parent) {
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// Calling InsertChild on |parent| will InvalidateHierarchy() on us, so
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// no need to set mRootViewManager ourselves here.
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parent->InsertChild(mRootView, nullptr);
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} else {
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InvalidateHierarchy();
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}
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}
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// Else don't touch mRootViewManager
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}
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void nsViewManager::GetWindowDimensions(nscoord* aWidth, nscoord* aHeight) {
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if (nullptr != mRootView) {
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if (mDelayedResize == nsSize(NSCOORD_NONE, NSCOORD_NONE)) {
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nsRect dim = mRootView->GetDimensions();
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*aWidth = dim.Width();
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*aHeight = dim.Height();
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} else {
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*aWidth = mDelayedResize.width;
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*aHeight = mDelayedResize.height;
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}
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} else {
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*aWidth = 0;
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*aHeight = 0;
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}
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}
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void nsViewManager::DoSetWindowDimensions(nscoord aWidth, nscoord aHeight) {
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nsRect oldDim = mRootView->GetDimensions();
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nsRect newDim(0, 0, aWidth, aHeight);
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// We care about resizes even when one dimension is already zero.
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if (oldDim.IsEqualEdges(newDim)) {
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return;
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}
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// Don't resize the widget. It is already being set elsewhere.
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mRootView->SetDimensions(newDim, true, false);
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if (RefPtr<PresShell> presShell = mPresShell) {
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presShell->ResizeReflow(aWidth, aHeight);
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}
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}
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bool nsViewManager::ShouldDelayResize() const {
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MOZ_ASSERT(mRootView);
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if (!mRootView->IsEffectivelyVisible() || !mPresShell ||
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!mPresShell->IsVisible()) {
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return true;
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}
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if (nsRefreshDriver* rd = mPresShell->GetRefreshDriver()) {
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if (rd->IsResizeSuppressed()) {
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return true;
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}
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}
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return false;
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}
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void nsViewManager::SetWindowDimensions(nscoord aWidth, nscoord aHeight,
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bool aDelayResize) {
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if (mRootView) {
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if (!ShouldDelayResize() && !aDelayResize) {
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if (mDelayedResize != nsSize(NSCOORD_NONE, NSCOORD_NONE) &&
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mDelayedResize != nsSize(aWidth, aHeight)) {
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// We have a delayed resize; that now obsolete size may already have
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// been flushed to the PresContext so we need to update the PresContext
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// with the new size because if the new size is exactly the same as the
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// root view's current size then DoSetWindowDimensions will not
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// request a resize reflow (which would correct it). See bug 617076.
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mDelayedResize = nsSize(aWidth, aHeight);
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FlushDelayedResize();
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}
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mDelayedResize.SizeTo(NSCOORD_NONE, NSCOORD_NONE);
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DoSetWindowDimensions(aWidth, aHeight);
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} else {
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mDelayedResize.SizeTo(aWidth, aHeight);
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if (mPresShell) {
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mPresShell->SetNeedStyleFlush();
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mPresShell->SetNeedLayoutFlush();
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}
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}
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}
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}
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void nsViewManager::FlushDelayedResize() {
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if (mDelayedResize != nsSize(NSCOORD_NONE, NSCOORD_NONE)) {
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DoSetWindowDimensions(mDelayedResize.width, mDelayedResize.height);
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mDelayedResize.SizeTo(NSCOORD_NONE, NSCOORD_NONE);
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}
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}
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// Convert aIn from being relative to and in appunits of aFromView, to being
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// relative to and in appunits of aToView.
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static nsRegion ConvertRegionBetweenViews(const nsRegion& aIn,
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nsView* aFromView, nsView* aToView) {
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nsRegion out = aIn;
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out.MoveBy(aFromView->GetOffsetTo(aToView));
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out = out.ScaleToOtherAppUnitsRoundOut(
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aFromView->GetViewManager()->AppUnitsPerDevPixel(),
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aToView->GetViewManager()->AppUnitsPerDevPixel());
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return out;
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}
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nsView* nsViewManager::GetDisplayRootFor(nsView* aView) {
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nsView* displayRoot = aView;
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for (;;) {
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nsView* displayParent = displayRoot->GetParent();
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if (!displayParent) return displayRoot;
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if (displayRoot->GetFloating() && !displayParent->GetFloating())
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return displayRoot;
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// If we have a combobox dropdown popup within a panel popup, both the view
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// for the dropdown popup and its parent will be floating, so we need to
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// distinguish this situation. We do this by looking for a widget. Any view
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// with a widget is a display root.
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nsIWidget* widget = displayRoot->GetWidget();
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if (widget && widget->GetWindowType() == widget::WindowType::Popup) {
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NS_ASSERTION(displayRoot->GetFloating() && displayParent->GetFloating(),
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"this should only happen with floating views that have "
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"floating parents");
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return displayRoot;
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}
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displayRoot = displayParent;
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}
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}
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/**
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aRegion is given in device coordinates!!
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aContext may be null, in which case layers should be used for
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rendering.
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*/
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void nsViewManager::Refresh(nsView* aView,
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const LayoutDeviceIntRegion& aRegion) {
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NS_ASSERTION(aView->GetViewManager() == this, "wrong view manager");
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if (mPresShell && mPresShell->IsNeverPainting()) {
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return;
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}
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if (aRegion.IsEmpty()) {
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return;
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}
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nsIWidget* widget = aView->GetWidget();
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if (!widget) {
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return;
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}
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NS_ASSERTION(!IsPainting(), "recursive painting not permitted");
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if (IsPainting()) {
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RootViewManager()->mRecursiveRefreshPending = true;
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return;
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}
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{
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nsAutoScriptBlocker scriptBlocker;
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SetPainting(true);
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NS_ASSERTION(GetDisplayRootFor(aView) == aView,
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"Widgets that we paint must all be display roots");
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if (RefPtr<PresShell> presShell = mPresShell) {
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#ifdef MOZ_DUMP_PAINTING
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if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
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printf_stderr("--COMPOSITE-- %p\n", presShell.get());
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}
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#endif
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WindowRenderer* renderer = widget->GetWindowRenderer();
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if (!renderer->NeedsWidgetInvalidation()) {
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renderer->FlushRendering(wr::RenderReasons::WIDGET);
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} else {
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presShell->SyncPaintFallback(aView);
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}
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#ifdef MOZ_DUMP_PAINTING
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if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
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printf_stderr("--ENDCOMPOSITE--\n");
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}
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#endif
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mozilla::StartupTimeline::RecordOnce(
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mozilla::StartupTimeline::FIRST_PAINT);
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}
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SetPainting(false);
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}
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if (RootViewManager()->mRecursiveRefreshPending) {
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RootViewManager()->mRecursiveRefreshPending = false;
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InvalidateAllViews();
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}
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}
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void nsViewManager::ProcessPendingUpdatesForView(nsView* aView,
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bool aFlushDirtyRegion) {
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NS_ASSERTION(IsRootVM(), "Updates will be missed");
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if (!aView) {
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return;
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}
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RefPtr<PresShell> rootPresShell = mPresShell;
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AutoTArray<nsCOMPtr<nsIWidget>, 1> widgets;
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aView->GetViewManager()->ProcessPendingUpdatesRecurse(aView, widgets);
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for (uint32_t i = 0; i < widgets.Length(); ++i) {
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nsView* view = nsView::GetViewFor(widgets[i]);
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if (view) {
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if (view->mNeedsWindowPropertiesSync) {
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view->mNeedsWindowPropertiesSync = false;
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if (nsViewManager* vm = view->GetViewManager()) {
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if (PresShell* presShell = vm->GetPresShell()) {
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presShell->SyncWindowProperties(/* aSync */ true);
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}
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}
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}
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}
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view = nsView::GetViewFor(widgets[i]);
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if (view) {
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view->ResetWidgetBounds(false, true);
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}
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}
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if (rootPresShell->GetViewManager() != this) {
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return; // presentation might have been torn down
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}
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if (aFlushDirtyRegion) {
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nsAutoScriptBlocker scriptBlocker;
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SetPainting(true);
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for (uint32_t i = 0; i < widgets.Length(); ++i) {
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nsIWidget* widget = widgets[i];
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nsView* view = nsView::GetViewFor(widget);
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if (view) {
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RefPtr<nsViewManager> viewManager = view->GetViewManager();
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viewManager->ProcessPendingUpdatesPaint(MOZ_KnownLive(widget));
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}
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}
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SetPainting(false);
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}
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}
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void nsViewManager::ProcessPendingUpdatesRecurse(
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nsView* aView, AutoTArray<nsCOMPtr<nsIWidget>, 1>& aWidgets) {
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if (mPresShell && mPresShell->IsNeverPainting()) {
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return;
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}
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for (nsView* childView = aView->GetFirstChild(); childView;
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childView = childView->GetNextSibling()) {
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childView->GetViewManager()->ProcessPendingUpdatesRecurse(childView,
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aWidgets);
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}
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nsIWidget* widget = aView->GetWidget();
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if (widget) {
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aWidgets.AppendElement(widget);
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} else {
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FlushDirtyRegionToWidget(aView);
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}
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}
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void nsViewManager::ProcessPendingUpdatesPaint(nsIWidget* aWidget) {
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if (aWidget->NeedsPaint()) {
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// If an ancestor widget was hidden and then shown, we could
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// have a delayed resize to handle.
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for (RefPtr<nsViewManager> vm = this; vm;
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vm = vm->mRootView->GetParent()
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? vm->mRootView->GetParent()->GetViewManager()
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: nullptr) {
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if (vm->mDelayedResize != nsSize(NSCOORD_NONE, NSCOORD_NONE) &&
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vm->mRootView->IsEffectivelyVisible() && vm->mPresShell &&
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vm->mPresShell->IsVisible()) {
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vm->FlushDelayedResize();
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}
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}
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nsView* view = nsView::GetViewFor(aWidget);
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if (!view) {
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NS_ERROR("FlushDelayedResize destroyed the nsView?");
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return;
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}
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nsIWidgetListener* previousListener =
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aWidget->GetPreviouslyAttachedWidgetListener();
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if (previousListener && previousListener != view &&
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view->IsPrimaryFramePaintSuppressed()) {
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return;
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}
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if (RefPtr<PresShell> presShell = mPresShell) {
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#ifdef MOZ_DUMP_PAINTING
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if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
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printf_stderr(
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"---- PAINT START ----PresShell(%p), nsView(%p), nsIWidget(%p)\n",
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presShell.get(), view, aWidget);
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}
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#endif
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presShell->PaintAndRequestComposite(view, PaintFlags::None);
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view->SetForcedRepaint(false);
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#ifdef MOZ_DUMP_PAINTING
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if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
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printf_stderr("---- PAINT END ----\n");
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}
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#endif
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}
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}
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FlushDirtyRegionToWidget(nsView::GetViewFor(aWidget));
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}
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void nsViewManager::FlushDirtyRegionToWidget(nsView* aView) {
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NS_ASSERTION(aView->GetViewManager() == this,
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"FlushDirtyRegionToWidget called on view we don't own");
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if (!aView->HasNonEmptyDirtyRegion()) {
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return;
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}
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nsRegion& dirtyRegion = aView->GetDirtyRegion();
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nsView* nearestViewWithWidget = aView;
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while (!nearestViewWithWidget->HasWidget() &&
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nearestViewWithWidget->GetParent()) {
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nearestViewWithWidget = nearestViewWithWidget->GetParent();
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}
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nsRegion r =
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ConvertRegionBetweenViews(dirtyRegion, aView, nearestViewWithWidget);
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nsViewManager* widgetVM = nearestViewWithWidget->GetViewManager();
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widgetVM->InvalidateWidgetArea(nearestViewWithWidget, r);
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dirtyRegion.SetEmpty();
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}
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void nsViewManager::InvalidateView(nsView* aView) {
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// Mark the entire view as damaged
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InvalidateView(aView, aView->GetDimensions());
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}
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static void AddDirtyRegion(nsView* aView, const nsRegion& aDamagedRegion) {
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nsRegion& dirtyRegion = aView->GetDirtyRegion();
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dirtyRegion.Or(dirtyRegion, aDamagedRegion);
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dirtyRegion.SimplifyOutward(8);
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}
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void nsViewManager::PostPendingUpdate() {
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nsViewManager* rootVM = RootViewManager();
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rootVM->mHasPendingWidgetGeometryChanges = true;
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if (rootVM->mPresShell) {
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rootVM->mPresShell->SetNeedLayoutFlush();
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rootVM->mPresShell->ScheduleViewManagerFlush();
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}
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}
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/**
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* @param aDamagedRegion this region, relative to aWidgetView, is invalidated in
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* every widget child of aWidgetView, plus aWidgetView's own widget
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*/
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void nsViewManager::InvalidateWidgetArea(nsView* aWidgetView,
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const nsRegion& aDamagedRegion) {
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NS_ASSERTION(aWidgetView->GetViewManager() == this,
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"InvalidateWidgetArea called on view we don't own");
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nsIWidget* widget = aWidgetView->GetWidget();
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#if 0
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nsRect dbgBounds = aDamagedRegion.GetBounds();
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printf("InvalidateWidgetArea view:%X (%d) widget:%X region: %d, %d, %d, %d\n",
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aWidgetView, aWidgetView->IsAttachedToTopLevel(),
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widget, dbgBounds.x, dbgBounds.y, dbgBounds.width, dbgBounds.height);
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#endif
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// If the widget is hidden, it don't cover nothing
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if (widget && !widget->IsVisible()) {
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return;
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}
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if (!widget) {
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// The root view or a scrolling view might not have a widget
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// (for example, during printing). We get here when we scroll
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// during printing to show selected options in a listbox, for example.
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return;
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}
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if (!aDamagedRegion.IsEmpty()) {
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for (auto iter = aDamagedRegion.RectIter(); !iter.Done(); iter.Next()) {
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LayoutDeviceIntRect bounds = ViewToWidget(aWidgetView, iter.Get());
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widget->Invalidate(bounds);
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}
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}
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}
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|
|
static bool ShouldIgnoreInvalidation(nsViewManager* aVM) {
|
|
while (aVM) {
|
|
PresShell* presShell = aVM->GetPresShell();
|
|
if (!presShell || presShell->ShouldIgnoreInvalidation()) {
|
|
return true;
|
|
}
|
|
nsView* view = aVM->GetRootView()->GetParent();
|
|
aVM = view ? view->GetViewManager() : nullptr;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void nsViewManager::InvalidateView(nsView* aView, const nsRect& aRect) {
|
|
// If painting is suppressed in the presshell or an ancestor drop all
|
|
// invalidates, it will invalidate everything when it unsuppresses.
|
|
if (ShouldIgnoreInvalidation(this)) {
|
|
return;
|
|
}
|
|
|
|
InvalidateViewNoSuppression(aView, aRect);
|
|
}
|
|
|
|
void nsViewManager::InvalidateViewNoSuppression(nsView* aView,
|
|
const nsRect& aRect) {
|
|
MOZ_ASSERT(nullptr != aView, "null view");
|
|
|
|
NS_ASSERTION(aView->GetViewManager() == this,
|
|
"InvalidateViewNoSuppression called on view we don't own");
|
|
|
|
nsRect damagedRect(aRect);
|
|
if (damagedRect.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
nsView* displayRoot = GetDisplayRootFor(aView);
|
|
nsViewManager* displayRootVM = displayRoot->GetViewManager();
|
|
// Propagate the update to the displayRoot, since iframes, for example,
|
|
// can overlap each other and be translucent. So we have to possibly
|
|
// invalidate our rect in each of the widgets we have lying about.
|
|
damagedRect.MoveBy(aView->GetOffsetTo(displayRoot));
|
|
int32_t rootAPD = displayRootVM->AppUnitsPerDevPixel();
|
|
int32_t APD = AppUnitsPerDevPixel();
|
|
damagedRect = damagedRect.ScaleToOtherAppUnitsRoundOut(APD, rootAPD);
|
|
|
|
// accumulate this rectangle in the view's dirty region, so we can
|
|
// process it later.
|
|
AddDirtyRegion(displayRoot, nsRegion(damagedRect));
|
|
}
|
|
|
|
void nsViewManager::InvalidateAllViews() {
|
|
if (RootViewManager() != this) {
|
|
return RootViewManager()->InvalidateAllViews();
|
|
}
|
|
|
|
InvalidateViews(mRootView);
|
|
}
|
|
|
|
void nsViewManager::InvalidateViews(nsView* aView) {
|
|
// Invalidate this view.
|
|
InvalidateView(aView);
|
|
|
|
// Invalidate all children as well.
|
|
nsView* childView = aView->GetFirstChild();
|
|
while (nullptr != childView) {
|
|
childView->GetViewManager()->InvalidateViews(childView);
|
|
childView = childView->GetNextSibling();
|
|
}
|
|
}
|
|
|
|
void nsViewManager::WillPaintWindow(nsIWidget* aWidget) {
|
|
if (aWidget) {
|
|
nsView* view = nsView::GetViewFor(aWidget);
|
|
WindowRenderer* renderer = aWidget->GetWindowRenderer();
|
|
if (view &&
|
|
(view->ForcedRepaint() || !renderer->NeedsWidgetInvalidation())) {
|
|
ProcessPendingUpdates();
|
|
// Re-get the view pointer here since the ProcessPendingUpdates might have
|
|
// destroyed it during CallWillPaintOnObservers.
|
|
view = nsView::GetViewFor(aWidget);
|
|
if (view) {
|
|
view->SetForcedRepaint(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool nsViewManager::PaintWindow(nsIWidget* aWidget,
|
|
const LayoutDeviceIntRegion& aRegion) {
|
|
if (!aWidget || !mContext) return false;
|
|
|
|
NS_ASSERTION(
|
|
IsPaintingAllowed(),
|
|
"shouldn't be receiving paint events while painting is disallowed!");
|
|
|
|
// Get the view pointer here since NS_WILL_PAINT might have
|
|
// destroyed it during CallWillPaintOnObservers (bug 378273).
|
|
nsView* view = nsView::GetViewFor(aWidget);
|
|
if (view && !aRegion.IsEmpty()) {
|
|
Refresh(view, aRegion);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void nsViewManager::DidPaintWindow() {
|
|
if (RefPtr<PresShell> presShell = mPresShell) {
|
|
presShell->DidPaintWindow();
|
|
}
|
|
}
|
|
|
|
void nsViewManager::DispatchEvent(WidgetGUIEvent* aEvent, nsView* aView,
|
|
nsEventStatus* aStatus) {
|
|
AUTO_PROFILER_LABEL("nsViewManager::DispatchEvent", OTHER);
|
|
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
if ((mouseEvent &&
|
|
// Ignore mouse events that we synthesize.
|
|
mouseEvent->mReason == WidgetMouseEvent::eReal &&
|
|
// Ignore mouse exit and enter (we'll get moves if the user
|
|
// is really moving the mouse) since we get them when we
|
|
// create and destroy widgets.
|
|
mouseEvent->mMessage != eMouseExitFromWidget &&
|
|
mouseEvent->mMessage != eMouseEnterIntoWidget) ||
|
|
aEvent->HasKeyEventMessage() || aEvent->HasIMEEventMessage()) {
|
|
gLastUserEventTime = PR_IntervalToMicroseconds(PR_IntervalNow());
|
|
}
|
|
|
|
// Find the view whose coordinates system we're in.
|
|
nsView* view = aView;
|
|
bool dispatchUsingCoordinates = aEvent->IsUsingCoordinates();
|
|
if (dispatchUsingCoordinates) {
|
|
// Will dispatch using coordinates. Pretty bogus but it's consistent
|
|
// with what presshell does.
|
|
view = GetDisplayRootFor(view);
|
|
}
|
|
|
|
// If the view has no frame, look for a view that does.
|
|
nsIFrame* frame = view->GetFrame();
|
|
if (!frame && (dispatchUsingCoordinates || aEvent->HasKeyEventMessage() ||
|
|
aEvent->IsIMERelatedEvent())) {
|
|
while (view && !view->GetFrame()) {
|
|
view = view->GetParent();
|
|
}
|
|
|
|
if (view) {
|
|
frame = view->GetFrame();
|
|
}
|
|
}
|
|
|
|
if (nullptr != frame) {
|
|
// Hold a refcount to the presshell. The continued existence of the
|
|
// presshell will delay deletion of this view hierarchy should the event
|
|
// want to cause its destruction in, say, some JavaScript event handler.
|
|
if (RefPtr<PresShell> presShell = view->GetViewManager()->GetPresShell()) {
|
|
presShell->HandleEvent(frame, aEvent, false, aStatus);
|
|
return;
|
|
}
|
|
}
|
|
|
|
*aStatus = nsEventStatus_eIgnore;
|
|
}
|
|
|
|
// Recursively reparent widgets if necessary
|
|
|
|
void nsViewManager::ReparentChildWidgets(nsView* aView, nsIWidget* aNewWidget) {
|
|
MOZ_ASSERT(aNewWidget, "null widget");
|
|
|
|
if (aView->HasWidget()) {
|
|
// Check to see if the parent widget is the
|
|
// same as the new parent. If not then reparent
|
|
// the widget, otherwise there is nothing more
|
|
// to do for the view and its descendants
|
|
nsIWidget* widget = aView->GetWidget();
|
|
nsIWidget* parentWidget = widget->GetParent();
|
|
if (parentWidget) {
|
|
// Child widget
|
|
if (parentWidget != aNewWidget) {
|
|
widget->SetParent(aNewWidget);
|
|
}
|
|
} else {
|
|
// Toplevel widget (popup, dialog, etc)
|
|
widget->ReparentNativeWidget(aNewWidget);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Need to check each of the views children to see
|
|
// if they have a widget and reparent it.
|
|
|
|
for (nsView* kid = aView->GetFirstChild(); kid; kid = kid->GetNextSibling()) {
|
|
ReparentChildWidgets(kid, aNewWidget);
|
|
}
|
|
}
|
|
|
|
// Reparent a view and its descendant views widgets if necessary
|
|
|
|
void nsViewManager::ReparentWidgets(nsView* aView, nsView* aParent) {
|
|
MOZ_ASSERT(aParent, "Must have a parent");
|
|
MOZ_ASSERT(aView, "Must have a view");
|
|
|
|
// Quickly determine whether the view has pre-existing children or a
|
|
// widget. In most cases the view will not have any pre-existing
|
|
// children when this is called. Only in the case
|
|
// where a view has been reparented by removing it from
|
|
// a reinserting it into a new location in the view hierarchy do we
|
|
// have to consider reparenting the existing widgets for the view and
|
|
// it's descendants.
|
|
if (aView->HasWidget() || aView->GetFirstChild()) {
|
|
nsIWidget* parentWidget = aParent->GetNearestWidget(nullptr);
|
|
if (parentWidget) {
|
|
ReparentChildWidgets(aView, parentWidget);
|
|
return;
|
|
}
|
|
NS_WARNING("Can not find a widget for the parent view");
|
|
}
|
|
}
|
|
|
|
void nsViewManager::InsertChild(nsView* aParent, nsView* aChild,
|
|
nsView* aSibling, bool aAfter) {
|
|
MOZ_ASSERT(nullptr != aParent, "null ptr");
|
|
MOZ_ASSERT(nullptr != aChild, "null ptr");
|
|
NS_ASSERTION(aSibling == nullptr || aSibling->GetParent() == aParent,
|
|
"tried to insert view with invalid sibling");
|
|
NS_ASSERTION(!IsViewInserted(aChild),
|
|
"tried to insert an already-inserted view");
|
|
|
|
if ((nullptr != aParent) && (nullptr != aChild)) {
|
|
// if aAfter is set, we will insert the child after 'prev' (i.e. after 'kid'
|
|
// in document order, otherwise after 'kid' (i.e. before 'kid' in document
|
|
// order).
|
|
|
|
if (nullptr == aSibling) {
|
|
if (aAfter) {
|
|
// insert at end of document order, i.e., before first view
|
|
// this is the common case, by far
|
|
aParent->InsertChild(aChild, nullptr);
|
|
ReparentWidgets(aChild, aParent);
|
|
} else {
|
|
// insert at beginning of document order, i.e., after last view
|
|
nsView* kid = aParent->GetFirstChild();
|
|
nsView* prev = nullptr;
|
|
while (kid) {
|
|
prev = kid;
|
|
kid = kid->GetNextSibling();
|
|
}
|
|
// prev is last view or null if there are no children
|
|
aParent->InsertChild(aChild, prev);
|
|
ReparentWidgets(aChild, aParent);
|
|
}
|
|
} else {
|
|
nsView* kid = aParent->GetFirstChild();
|
|
nsView* prev = nullptr;
|
|
while (kid && aSibling != kid) {
|
|
// get the next sibling view
|
|
prev = kid;
|
|
kid = kid->GetNextSibling();
|
|
}
|
|
NS_ASSERTION(kid != nullptr, "couldn't find sibling in child list");
|
|
if (aAfter) {
|
|
// insert after 'kid' in document order, i.e. before in view order
|
|
aParent->InsertChild(aChild, prev);
|
|
ReparentWidgets(aChild, aParent);
|
|
} else {
|
|
// insert before 'kid' in document order, i.e. after in view order
|
|
aParent->InsertChild(aChild, kid);
|
|
ReparentWidgets(aChild, aParent);
|
|
}
|
|
}
|
|
|
|
// if the parent view is marked as "floating", make the newly added view
|
|
// float as well.
|
|
if (aParent->GetFloating()) aChild->SetFloating(true);
|
|
}
|
|
}
|
|
|
|
void nsViewManager::RemoveChild(nsView* aChild) {
|
|
NS_ASSERTION(aChild, "aChild must not be null");
|
|
|
|
nsView* parent = aChild->GetParent();
|
|
|
|
if (nullptr != parent) {
|
|
NS_ASSERTION(
|
|
aChild->GetViewManager() == this || parent->GetViewManager() == this,
|
|
"wrong view manager");
|
|
parent->RemoveChild(aChild);
|
|
}
|
|
}
|
|
|
|
void nsViewManager::MoveViewTo(nsView* aView, nscoord aX, nscoord aY) {
|
|
NS_ASSERTION(aView->GetViewManager() == this, "wrong view manager");
|
|
aView->SetPosition(aX, aY);
|
|
}
|
|
|
|
void nsViewManager::ResizeView(nsView* aView, const nsRect& aRect) {
|
|
NS_ASSERTION(aView->GetViewManager() == this, "wrong view manager");
|
|
|
|
nsRect oldDimensions = aView->GetDimensions();
|
|
if (!oldDimensions.IsEqualEdges(aRect)) {
|
|
aView->SetDimensions(aRect, true);
|
|
}
|
|
|
|
// Note that if layout resizes the view and the view has a custom clip
|
|
// region set, then we expect layout to update the clip region too. Thus
|
|
// in the case where mClipRect has been optimized away to just be a null
|
|
// pointer, and this resize is implicitly changing the clip rect, it's OK
|
|
// because layout will change it back again if necessary.
|
|
}
|
|
|
|
void nsViewManager::SetViewFloating(nsView* aView, bool aFloating) {
|
|
NS_ASSERTION(aView, "no view");
|
|
|
|
aView->SetFloating(aFloating);
|
|
}
|
|
|
|
void nsViewManager::SetViewVisibility(nsView* aView, ViewVisibility aVisible) {
|
|
NS_ASSERTION(aView->GetViewManager() == this, "wrong view manager");
|
|
|
|
if (aVisible != aView->GetVisibility()) {
|
|
aView->SetVisibility(aVisible);
|
|
}
|
|
}
|
|
|
|
bool nsViewManager::IsViewInserted(nsView* aView) {
|
|
if (mRootView == aView) {
|
|
return true;
|
|
}
|
|
if (aView->GetParent() == nullptr) {
|
|
return false;
|
|
}
|
|
nsView* view = aView->GetParent()->GetFirstChild();
|
|
while (view != nullptr) {
|
|
if (view == aView) {
|
|
return true;
|
|
}
|
|
view = view->GetNextSibling();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsViewManager* nsViewManager::IncrementDisableRefreshCount() {
|
|
if (!IsRootVM()) {
|
|
return RootViewManager()->IncrementDisableRefreshCount();
|
|
}
|
|
|
|
++mRefreshDisableCount;
|
|
|
|
return this;
|
|
}
|
|
|
|
void nsViewManager::DecrementDisableRefreshCount() {
|
|
NS_ASSERTION(IsRootVM(), "Should only be called on root");
|
|
--mRefreshDisableCount;
|
|
NS_ASSERTION(mRefreshDisableCount >= 0, "Invalid refresh disable count!");
|
|
}
|
|
|
|
nsIWidget* nsViewManager::GetRootWidget() const {
|
|
if (!mRootView) {
|
|
return nullptr;
|
|
}
|
|
if (mRootView->HasWidget()) {
|
|
return mRootView->GetWidget();
|
|
}
|
|
if (mRootView->GetParent()) {
|
|
return mRootView->GetParent()->GetViewManager()->GetRootWidget();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
LayoutDeviceIntRect nsViewManager::ViewToWidget(nsView* aView,
|
|
const nsRect& aRect) const {
|
|
NS_ASSERTION(aView->GetViewManager() == this, "wrong view manager");
|
|
|
|
// account for the view's origin not lining up with the widget's
|
|
nsRect rect = aRect + aView->ViewToWidgetOffset();
|
|
|
|
// finally, convert to device coordinates.
|
|
return LayoutDeviceIntRect::FromUnknownRect(
|
|
rect.ToOutsidePixels(AppUnitsPerDevPixel()));
|
|
}
|
|
|
|
void nsViewManager::IsPainting(bool& aIsPainting) {
|
|
aIsPainting = IsPainting();
|
|
}
|
|
|
|
void nsViewManager::ProcessPendingUpdates() {
|
|
if (!IsRootVM()) {
|
|
RefPtr<nsViewManager> rootViewManager = RootViewManager();
|
|
rootViewManager->ProcessPendingUpdates();
|
|
return;
|
|
}
|
|
|
|
// Flush things like reflows by calling WillPaint on observer presShells.
|
|
if (mPresShell) {
|
|
mPresShell->GetPresContext()->RefreshDriver()->RevokeViewManagerFlush();
|
|
|
|
RefPtr<nsViewManager> strongThis(this);
|
|
CallWillPaintOnObservers();
|
|
|
|
ProcessPendingUpdatesForView(mRootView, true);
|
|
if (mPresShell) {
|
|
if (nsPresContext* pc = mPresShell->GetPresContext()) {
|
|
pc->RefreshDriver()->ClearHasScheduleFlush();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsViewManager::UpdateWidgetGeometry() {
|
|
if (!IsRootVM()) {
|
|
RefPtr<nsViewManager> rootViewManager = RootViewManager();
|
|
rootViewManager->UpdateWidgetGeometry();
|
|
return;
|
|
}
|
|
|
|
if (mHasPendingWidgetGeometryChanges) {
|
|
mHasPendingWidgetGeometryChanges = false;
|
|
ProcessPendingUpdatesForView(mRootView, false);
|
|
}
|
|
}
|
|
|
|
/* static */ void nsViewManager::CollectVMsForWillPaint(
|
|
nsView* aView, nsViewManager* aParentVM,
|
|
nsTArray<RefPtr<nsViewManager>>& aVMs) {
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
if (vm != aParentVM) {
|
|
aVMs.AppendElement(vm);
|
|
}
|
|
|
|
for (nsView* child = aView->GetFirstChild(); child;
|
|
child = child->GetNextSibling()) {
|
|
CollectVMsForWillPaint(child, vm, aVMs);
|
|
}
|
|
}
|
|
|
|
void nsViewManager::CallWillPaintOnObservers() {
|
|
MOZ_ASSERT(IsRootVM(), "Must be root VM for this to be called!");
|
|
|
|
if (!mRootView) {
|
|
return;
|
|
}
|
|
|
|
AutoTArray<RefPtr<nsViewManager>, 2> VMs;
|
|
CollectVMsForWillPaint(mRootView, nullptr, VMs);
|
|
for (const auto& vm : VMs) {
|
|
if (vm->GetRootView() && vm->GetRootView()->IsEffectivelyVisible()) {
|
|
if (RefPtr<PresShell> presShell = vm->GetPresShell()) {
|
|
presShell->WillPaint();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsViewManager::GetLastUserEventTime(uint32_t& aTime) {
|
|
aTime = gLastUserEventTime;
|
|
}
|
|
|
|
void nsViewManager::InvalidateHierarchy() {
|
|
if (mRootView) {
|
|
mRootViewManager = nullptr;
|
|
nsView* parent = mRootView->GetParent();
|
|
if (parent) {
|
|
mRootViewManager = parent->GetViewManager()->RootViewManager();
|
|
NS_ASSERTION(mRootViewManager != this,
|
|
"Root view had a parent, but it has the same view manager");
|
|
}
|
|
// else, we are implicitly our own root view manager.
|
|
}
|
|
}
|