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Diffstat (limited to 'view/nsView.cpp')
| -rw-r--r-- | view/nsView.cpp | 1127 |
1 files changed, 1127 insertions, 0 deletions
diff --git a/view/nsView.cpp b/view/nsView.cpp new file mode 100644 index 000000000..8f509cade --- /dev/null +++ b/view/nsView.cpp @@ -0,0 +1,1127 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "nsView.h" + +#include "mozilla/Attributes.h" +#include "mozilla/BasicEvents.h" +#include "mozilla/DebugOnly.h" +#include "mozilla/IntegerPrintfMacros.h" +#include "mozilla/Likely.h" +#include "mozilla/Poison.h" +#include "nsIWidget.h" +#include "nsViewManager.h" +#include "nsIFrame.h" +#include "nsPresArena.h" +#include "nsXULPopupManager.h" +#include "nsIWidgetListener.h" +#include "nsContentUtils.h" // for nsAutoScriptBlocker +#include "mozilla/TimelineConsumers.h" +#include "mozilla/CompositeTimelineMarker.h" + +using namespace mozilla; + +nsView::nsView(nsViewManager* aViewManager, nsViewVisibility aVisibility) +{ + MOZ_COUNT_CTOR(nsView); + + mVis = aVisibility; + // Views should be transparent by default. Not being transparent is + // a promise that the view will paint all its pixels opaquely. Views + // should make this promise explicitly by calling + // SetViewContentTransparency. + mVFlags = 0; + mViewManager = aViewManager; + mDirtyRegion = nullptr; + mWidgetIsTopLevel = false; +} + +void nsView::DropMouseGrabbing() +{ + nsIPresShell* presShell = mViewManager->GetPresShell(); + if (presShell) + presShell->ClearMouseCaptureOnView(this); +} + +nsView::~nsView() +{ + MOZ_COUNT_DTOR(nsView); + + while (GetFirstChild()) + { + nsView* child = GetFirstChild(); + if (child->GetViewManager() == mViewManager) { + child->Destroy(); + } else { + // just unhook it. Someone else will want to destroy this. + RemoveChild(child); + } + } + + if (mViewManager) + { + DropMouseGrabbing(); + + nsView *rootView = mViewManager->GetRootView(); + + if (rootView) + { + // Root views can have parents! + if (mParent) + { + mViewManager->RemoveChild(this); + } + + if (rootView == this) + { + // Inform the view manager that the root view has gone away... + mViewManager->SetRootView(nullptr); + } + } + else if (mParent) + { + mParent->RemoveChild(this); + } + + mViewManager = nullptr; + } + else if (mParent) + { + mParent->RemoveChild(this); + } + + if (mPreviousWindow) { + mPreviousWindow->SetPreviouslyAttachedWidgetListener(nullptr); + } + + // Destroy and release the widget + DestroyWidget(); + + delete mDirtyRegion; +} + +class DestroyWidgetRunnable : public Runnable { +public: + NS_DECL_NSIRUNNABLE + + explicit DestroyWidgetRunnable(nsIWidget* aWidget) : mWidget(aWidget) {} + +private: + nsCOMPtr<nsIWidget> mWidget; +}; + +NS_IMETHODIMP DestroyWidgetRunnable::Run() +{ + mWidget->Destroy(); + mWidget = nullptr; + return NS_OK; +} + + +void nsView::DestroyWidget() +{ + if (mWindow) + { + // If we are not attached to a base window, we're going to tear down our + // widget here. However, if we're attached to somebody elses widget, we + // want to leave the widget alone: don't reset the client data or call + // Destroy. Just clear our event view ptr and free our reference to it. + if (mWidgetIsTopLevel) { + mWindow->SetAttachedWidgetListener(nullptr); + } + else { + mWindow->SetWidgetListener(nullptr); + + nsCOMPtr<nsIRunnable> widgetDestroyer = + new DestroyWidgetRunnable(mWindow); + + // Don't leak if we happen to arrive here after the main thread + // has disappeared. + nsCOMPtr<nsIThread> mainThread = do_GetMainThread(); + if (mainThread) { + mainThread->Dispatch(widgetDestroyer.forget(), NS_DISPATCH_NORMAL); + } + } + + mWindow = nullptr; + } +} + +nsView* nsView::GetViewFor(nsIWidget* aWidget) +{ + NS_PRECONDITION(nullptr != aWidget, "null widget ptr"); + + nsIWidgetListener* listener = aWidget->GetWidgetListener(); + if (listener) { + nsView* view = listener->GetView(); + if (view) + return view; + } + + listener = aWidget->GetAttachedWidgetListener(); + return listener ? listener->GetView() : nullptr; +} + +void nsView::Destroy() +{ + this->~nsView(); + mozWritePoison(this, sizeof(*this)); + nsView::operator delete(this); +} + +void nsView::SetPosition(nscoord aX, nscoord aY) +{ + mDimBounds.x += aX - mPosX; + mDimBounds.y += aY - mPosY; + mPosX = aX; + mPosY = aY; + + NS_ASSERTION(GetParent() || (aX == 0 && aY == 0), + "Don't try to move the root widget to something non-zero"); + + ResetWidgetBounds(true, false); +} + +void nsView::ResetWidgetBounds(bool aRecurse, bool aForceSync) +{ + if (mWindow) { + if (!aForceSync) { + // Don't change widget geometry synchronously, since that can + // cause synchronous painting. + mViewManager->PostPendingUpdate(); + } else { + DoResetWidgetBounds(false, true); + } + return; + } + + if (aRecurse) { + // reposition any widgets under this view + for (nsView* v = GetFirstChild(); v; v = v->GetNextSibling()) { + v->ResetWidgetBounds(true, aForceSync); + } + } +} + +bool nsView::IsEffectivelyVisible() +{ + for (nsView* v = this; v; v = v->mParent) { + if (v->GetVisibility() == nsViewVisibility_kHide) + return false; + } + return true; +} + +LayoutDeviceIntRect nsView::CalcWidgetBounds(nsWindowType aType) +{ + int32_t p2a = mViewManager->AppUnitsPerDevPixel(); + + nsRect viewBounds(mDimBounds); + + nsView* parent = GetParent(); + nsIWidget* parentWidget = nullptr; + if (parent) { + nsPoint offset; + parentWidget = parent->GetNearestWidget(&offset, p2a); + // make viewBounds be relative to the parent widget, in appunits + viewBounds += offset; + + if (parentWidget && aType == eWindowType_popup && + IsEffectivelyVisible()) { + // put offset into screen coordinates. (based on client area origin) + LayoutDeviceIntPoint screenPoint = parentWidget->WidgetToScreenOffset(); + viewBounds += nsPoint(NSIntPixelsToAppUnits(screenPoint.x, p2a), + NSIntPixelsToAppUnits(screenPoint.y, p2a)); + } + } + + // Compute widget bounds in device pixels + LayoutDeviceIntRect newBounds = + LayoutDeviceIntRect::FromUnknownRect(viewBounds.ToNearestPixels(p2a)); + +#if defined(XP_MACOSX) || (MOZ_WIDGET_GTK == 3) + // cocoa and GTK round widget coordinates to the nearest global "display + // pixel" integer value. So we avoid fractional display pixel values by + // rounding to the nearest value that won't yield a fractional display pixel. + nsIWidget* widget = parentWidget ? parentWidget : mWindow.get(); + uint32_t round; + if (aType == eWindowType_popup && widget && + ((round = widget->RoundsWidgetCoordinatesTo()) > 1)) { + LayoutDeviceIntSize pixelRoundedSize = newBounds.Size(); + // round the top left and bottom right to the nearest round pixel + newBounds.x = NSToIntRoundUp(NSAppUnitsToDoublePixels(viewBounds.x, p2a) / round) * round; + newBounds.y = NSToIntRoundUp(NSAppUnitsToDoublePixels(viewBounds.y, p2a) / round) * round; + newBounds.width = + NSToIntRoundUp(NSAppUnitsToDoublePixels(viewBounds.XMost(), p2a) / round) * round - newBounds.x; + newBounds.height = + NSToIntRoundUp(NSAppUnitsToDoublePixels(viewBounds.YMost(), p2a) / round) * round - newBounds.y; + // but if that makes the widget larger then our frame may not paint the + // extra pixels, so reduce the size to the nearest round value + if (newBounds.width > pixelRoundedSize.width) { + newBounds.width -= round; + } + if (newBounds.height > pixelRoundedSize.height) { + newBounds.height -= round; + } + } +#endif + + // Compute where the top-left of our widget ended up relative to the parent + // widget, in appunits. + nsPoint roundedOffset(NSIntPixelsToAppUnits(newBounds.x, p2a), + NSIntPixelsToAppUnits(newBounds.y, p2a)); + + // mViewToWidgetOffset is added to coordinates relative to the view origin + // to get coordinates relative to the widget. + // The view origin, relative to the parent widget, is at + // (mPosX,mPosY) - mDimBounds.TopLeft() + viewBounds.TopLeft(). + // Our widget, relative to the parent widget, is roundedOffset. + mViewToWidgetOffset = nsPoint(mPosX, mPosY) + - mDimBounds.TopLeft() + viewBounds.TopLeft() - roundedOffset; + + return newBounds; +} + +void nsView::DoResetWidgetBounds(bool aMoveOnly, + bool aInvalidateChangedSize) { + // The geometry of a root view's widget is controlled externally, + // NOT by sizing or positioning the view + if (mViewManager->GetRootView() == this) { + return; + } + + NS_PRECONDITION(mWindow, "Why was this called??"); + + // Hold this ref to make sure it stays alive. + nsCOMPtr<nsIWidget> widget = mWindow; + + // Stash a copy of these and use them so we can handle this being deleted (say + // from sync painting/flushing from Show/Move/Resize on the widget). + LayoutDeviceIntRect newBounds; + RefPtr<nsDeviceContext> dx = mViewManager->GetDeviceContext(); + + nsWindowType type = widget->WindowType(); + + LayoutDeviceIntRect curBounds = widget->GetClientBounds(); + bool invisiblePopup = type == eWindowType_popup && + ((curBounds.IsEmpty() && mDimBounds.IsEmpty()) || + mVis == nsViewVisibility_kHide); + + if (invisiblePopup) { + // We're going to hit the early exit below, avoid calling CalcWidgetBounds. + } else { + newBounds = CalcWidgetBounds(type); + } + + bool curVisibility = widget->IsVisible(); + bool newVisibility = IsEffectivelyVisible(); + if (curVisibility && !newVisibility) { + widget->Show(false); + } + + if (invisiblePopup) { + // Don't manipulate empty or hidden popup widgets. For example there's no + // point moving hidden comboboxes around, or doing X server roundtrips + // to compute their true screen position. This could mean that WidgetToScreen + // operations on these widgets don't return up-to-date values, but popup + // positions aren't reliable anyway because of correction to be on or off-screen. + return; + } + + bool changedPos = curBounds.TopLeft() != newBounds.TopLeft(); + bool changedSize = curBounds.Size() != newBounds.Size(); + + // Child views are never attached to top level widgets, this is safe. + + // Coordinates are converted to desktop pixels for window Move/Resize APIs, + // because of the potential for device-pixel coordinate spaces for mixed + // hidpi/lodpi screens to overlap each other and result in bad placement + // (bug 814434). + DesktopToLayoutDeviceScale scale = dx->GetDesktopToDeviceScale(); + + DesktopRect deskRect = newBounds / scale; + if (changedPos) { + if (changedSize && !aMoveOnly) { + widget->ResizeClient(deskRect.x, deskRect.y, + deskRect.width, deskRect.height, + aInvalidateChangedSize); + } else { + widget->MoveClient(deskRect.x, deskRect.y); + } + } else { + if (changedSize && !aMoveOnly) { + widget->ResizeClient(deskRect.width, deskRect.height, + aInvalidateChangedSize); + } // else do nothing! + } + + if (!curVisibility && newVisibility) { + widget->Show(true); + } +} + +void nsView::SetDimensions(const nsRect& aRect, bool aPaint, bool aResizeWidget) +{ + nsRect dims = aRect; + dims.MoveBy(mPosX, mPosY); + + // Don't use nsRect's operator== here, since it returns true when + // both rects are empty even if they have different widths and we + // have cases where that sort of thing matters to us. + if (mDimBounds.TopLeft() == dims.TopLeft() && + mDimBounds.Size() == dims.Size()) { + return; + } + + mDimBounds = dims; + + if (aResizeWidget) { + ResetWidgetBounds(false, false); + } +} + +void nsView::NotifyEffectiveVisibilityChanged(bool aEffectivelyVisible) +{ + if (!aEffectivelyVisible) + { + DropMouseGrabbing(); + } + + SetForcedRepaint(true); + + if (nullptr != mWindow) + { + ResetWidgetBounds(false, false); + } + + for (nsView* child = mFirstChild; child; child = child->mNextSibling) { + if (child->mVis == nsViewVisibility_kHide) { + // It was effectively hidden and still is + continue; + } + // Our child is visible if we are + child->NotifyEffectiveVisibilityChanged(aEffectivelyVisible); + } +} + +void nsView::SetVisibility(nsViewVisibility aVisibility) +{ + mVis = aVisibility; + NotifyEffectiveVisibilityChanged(IsEffectivelyVisible()); +} + +void nsView::SetFloating(bool aFloatingView) +{ + if (aFloatingView) + mVFlags |= NS_VIEW_FLAG_FLOATING; + else + mVFlags &= ~NS_VIEW_FLAG_FLOATING; +} + +void nsView::InvalidateHierarchy() +{ + if (mViewManager->GetRootView() == this) + mViewManager->InvalidateHierarchy(); + + for (nsView *child = mFirstChild; child; child = child->GetNextSibling()) + child->InvalidateHierarchy(); +} + +void nsView::InsertChild(nsView *aChild, nsView *aSibling) +{ + NS_PRECONDITION(nullptr != aChild, "null ptr"); + + if (nullptr != aChild) + { + if (nullptr != aSibling) + { +#ifdef DEBUG + NS_ASSERTION(aSibling->GetParent() == this, "tried to insert view with invalid sibling"); +#endif + //insert after sibling + aChild->SetNextSibling(aSibling->GetNextSibling()); + aSibling->SetNextSibling(aChild); + } + else + { + aChild->SetNextSibling(mFirstChild); + mFirstChild = aChild; + } + aChild->SetParent(this); + + // If we just inserted a root view, then update the RootViewManager + // on all view managers in the new subtree. + + nsViewManager *vm = aChild->GetViewManager(); + if (vm->GetRootView() == aChild) + { + aChild->InvalidateHierarchy(); + } + } +} + +void nsView::RemoveChild(nsView *child) +{ + NS_PRECONDITION(nullptr != child, "null ptr"); + + if (nullptr != child) + { + nsView* prevKid = nullptr; + nsView* kid = mFirstChild; + DebugOnly<bool> found = false; + while (nullptr != kid) { + if (kid == child) { + if (nullptr != prevKid) { + prevKid->SetNextSibling(kid->GetNextSibling()); + } else { + mFirstChild = kid->GetNextSibling(); + } + child->SetParent(nullptr); + found = true; + break; + } + prevKid = kid; + kid = kid->GetNextSibling(); + } + NS_ASSERTION(found, "tried to remove non child"); + + // If we just removed a root view, then update the RootViewManager + // on all view managers in the removed subtree. + + nsViewManager *vm = child->GetViewManager(); + if (vm->GetRootView() == child) + { + child->InvalidateHierarchy(); + } + } +} + +// Native widgets ultimately just can't deal with the awesome power of +// CSS2 z-index. However, we set the z-index on the widget anyway +// because in many simple common cases the widgets do end up in the +// right order. We set each widget's z-index to the z-index of the +// nearest ancestor that has non-auto z-index. +static void UpdateNativeWidgetZIndexes(nsView* aView, int32_t aZIndex) +{ + if (aView->HasWidget()) { + nsIWidget* widget = aView->GetWidget(); + if (widget->GetZIndex() != aZIndex) { + widget->SetZIndex(aZIndex); + } + } 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(); + MOZ_ASSERT(!aWidgetInitData || + aWidgetInitData->mWindowType != eWindowType_popup, + "Use CreateWidgetForPopup"); + + DefaultWidgetInitData defaultInitData; + bool initDataPassedIn = !!aWidgetInitData; + aWidgetInitData = aWidgetInitData ? aWidgetInitData : &defaultInitData; + defaultInitData.mListenForResizes = + (!initDataPassedIn && GetParent() && + GetParent()->GetViewManager() != mViewManager); + + LayoutDeviceIntRect trect = CalcWidgetBounds(aWidgetInitData->mWindowType); + + 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, aWidgetInitData, true); + if (!mWindow) { + return NS_ERROR_FAILURE; + } + + InitializeWindow(aEnableDragDrop, aResetVisibility); + + return NS_OK; +} + +nsresult nsView::CreateWidgetForParent(nsIWidget* aParentWidget, + nsWidgetInitData *aWidgetInitData, + bool aEnableDragDrop, + bool aResetVisibility) +{ + AssertNoWindow(); + MOZ_ASSERT(!aWidgetInitData || + aWidgetInitData->mWindowType != eWindowType_popup, + "Use CreateWidgetForPopup"); + MOZ_ASSERT(aParentWidget, "Parent widget required"); + + DefaultWidgetInitData defaultInitData; + aWidgetInitData = aWidgetInitData ? aWidgetInitData : &defaultInitData; + + LayoutDeviceIntRect trect = CalcWidgetBounds(aWidgetInitData->mWindowType); + + mWindow = aParentWidget->CreateChild(trect, aWidgetInitData); + if (!mWindow) { + return NS_ERROR_FAILURE; + } + + InitializeWindow(aEnableDragDrop, aResetVisibility); + + return NS_OK; +} + +nsresult nsView::CreateWidgetForPopup(nsWidgetInitData *aWidgetInitData, + nsIWidget* aParentWidget, + bool aEnableDragDrop, + bool aResetVisibility) +{ + AssertNoWindow(); + MOZ_ASSERT(aWidgetInitData, "Widget init data required"); + MOZ_ASSERT(aWidgetInitData->mWindowType == eWindowType_popup, + "Use one of the other CreateWidget methods"); + + LayoutDeviceIntRect trect = CalcWidgetBounds(aWidgetInitData->mWindowType); + + // 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, aWidgetInitData, true); + } + 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, aWidgetInitData); + } + if (!mWindow) { + return NS_ERROR_FAILURE; + } + + InitializeWindow(aEnableDragDrop, aResetVisibility); + + return NS_OK; +} + +void +nsView::InitializeWindow(bool aEnableDragDrop, bool aResetVisibility) +{ + MOZ_ASSERT(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()); + } +} + +void +nsView::SetNeedsWindowPropertiesSync() +{ + mNeedsWindowPropertiesSync = true; + if (mViewManager) { + mViewManager->PostPendingUpdate(); + } +} + + +// 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(); + } + } + + // Note, the previous device context will be released. Detaching + // will not restore the old one. + aWidget->AttachViewToTopLevel(!nsIWidget::UsePuppetWidgets()); + + mWindow = aWidget; + + 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); + nsIWidgetListener* listener = mWindow->GetPreviouslyAttachedWidgetListener(); + + if (listener && listener->GetView()) { + // Ensure the listener doesn't think it's being used anymore + listener->GetView()->SetPreviousWidget(nullptr); + } + + // If the new view's frame is paint suppressed then the window + // will want to use us instead until that's done + mWindow->SetPreviouslyAttachedWidgetListener(this); + + mPreviousWindow = mWindow; + mWindow = nullptr; + + 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(); + mWindow = nullptr; + } +} + +// +// 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(); + LayoutDeviceIntRect rect = mWindow->GetClientBounds(); + nsRect windowBounds = LayoutDeviceIntRect::ToAppUnits(rect, p2a); + rect = mWindow->GetBounds(); + nsRect nonclientBounds = LayoutDeviceIntRect::ToAppUnits(rect, p2a); + nsrefcnt widgetRefCnt = mWindow.get()->AddRef() - 1; + mWindow.get()->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 +{ + MOZ_ASSERT(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.ScaleToOtherAppUnits(currAPD, aAPD); + docOffset.x = docOffset.y = 0; + currAPD = newAPD; + } + currVM = newVM; + } + docOffset += v->GetPosition(); + } + offset += docOffset.ScaleToOtherAppUnits(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.ScaleToOtherAppUnits(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.ScaleToOtherAppUnits(currAPD, aAPD); + docPt.x = docPt.y = 0; + currAPD = newAPD; + } + currVM = newVM; + } + docPt += v->GetPosition(); + } + if (!v) { + if (aOffset) { + pt += docPt.ScaleToOtherAppUnits(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.ScaleToOtherAppUnits(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.ScaleToOtherAppUnitsRoundOut(ourAPD, parentAPD); +} + +nsPoint +nsView::ConvertFromParentCoords(nsPoint aPt) const +{ + const nsView* parent = GetParent(); + if (parent) { + aPt = aPt.ScaleToOtherAppUnits( + 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()) { + RefPtr<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, LayoutDeviceIntSize(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) +{ + RefPtr<nsViewManager> vm = mViewManager; + vm->WillPaintWindow(aWidget); +} + +bool +nsView::PaintWindow(nsIWidget* aWidget, LayoutDeviceIntRegion aRegion) +{ + NS_ASSERTION(this == nsView::GetViewFor(aWidget), "wrong view for widget?"); + + RefPtr<nsViewManager> vm = mViewManager; + bool result = vm->PaintWindow(aWidget, aRegion); + return result; +} + +void +nsView::DidPaintWindow() +{ + RefPtr<nsViewManager> vm = mViewManager; + vm->DidPaintWindow(); +} + +void +nsView::DidCompositeWindow(uint64_t aTransactionId, + const TimeStamp& aCompositeStart, + const TimeStamp& aCompositeEnd) +{ + nsIPresShell* presShell = mViewManager->GetPresShell(); + if (presShell) { + nsAutoScriptBlocker scriptBlocker; + + nsPresContext* context = presShell->GetPresContext(); + nsRootPresContext* rootContext = context->GetRootPresContext(); + MOZ_ASSERT(rootContext, "rootContext must be valid."); + rootContext->NotifyDidPaintForSubtree(nsIPresShell::PAINT_COMPOSITE, aTransactionId, + aCompositeEnd); + + // If the two timestamps are identical, this was likely a fake composite + // event which wouldn't be terribly useful to display. + if (aCompositeStart == aCompositeEnd) { + return; + } + + nsIDocShell* docShell = context->GetDocShell(); + RefPtr<TimelineConsumers> timelines = TimelineConsumers::Get(); + + if (timelines && timelines->HasConsumer(docShell)) { + timelines->AddMarkerForDocShell(docShell, + MakeUnique<CompositeTimelineMarker>(aCompositeStart, MarkerTracingType::START)); + timelines->AddMarkerForDocShell(docShell, + MakeUnique<CompositeTimelineMarker>(aCompositeEnd, MarkerTracingType::END)); + } + } +} + +void +nsView::RequestRepaint() +{ + nsIPresShell* presShell = mViewManager->GetPresShell(); + if (presShell) { + presShell->ScheduleViewManagerFlush(); + } +} + +nsEventStatus +nsView::HandleEvent(WidgetGUIEvent* aEvent, + bool aUseAttachedEvents) +{ + NS_PRECONDITION(nullptr != aEvent->mWidget, "null widget ptr"); + + nsEventStatus result = nsEventStatus_eIgnore; + nsView* view; + if (aUseAttachedEvents) { + nsIWidgetListener* listener = aEvent->mWidget->GetAttachedWidgetListener(); + view = listener ? listener->GetView() : nullptr; + } + else { + view = GetViewFor(aEvent->mWidget); + } + + if (view) { + RefPtr<nsViewManager> vm = view->GetViewManager(); + vm->DispatchEvent(aEvent, view, &result); + } + + return result; +} + +bool +nsView::IsPrimaryFramePaintSuppressed() +{ + return mFrame ? mFrame->PresContext()->PresShell()->IsPaintingSuppressed() : false; +} |