michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: //
michael@0: // Eric Vaughan
michael@0: // Netscape Communications
michael@0: //
michael@0: // See documentation in associated header file
michael@0: //
michael@0: 
michael@0: #include "nsLeafBoxFrame.h"
michael@0: #include "nsBoxFrame.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsGkAtoms.h"
michael@0: #include "nsPresContext.h"
michael@0: #include "nsStyleContext.h"
michael@0: #include "nsIContent.h"
michael@0: #include "nsNameSpaceManager.h"
michael@0: #include "nsBoxLayoutState.h"
michael@0: #include "nsWidgetsCID.h"
michael@0: #include "nsViewManager.h"
michael@0: #include "nsContainerFrame.h"
michael@0: #include "nsDisplayList.h"
michael@0: #include <algorithm>
michael@0: 
michael@0: //
michael@0: // NS_NewLeafBoxFrame
michael@0: //
michael@0: // Creates a new Toolbar frame and returns it
michael@0: //
michael@0: nsIFrame*
michael@0: NS_NewLeafBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0: {
michael@0:   return new (aPresShell) nsLeafBoxFrame(aPresShell, aContext);
michael@0: }
michael@0: 
michael@0: NS_IMPL_FRAMEARENA_HELPERS(nsLeafBoxFrame)
michael@0: 
michael@0: nsLeafBoxFrame::nsLeafBoxFrame(nsIPresShell* aShell, nsStyleContext* aContext)
michael@0:     : nsLeafFrame(aContext)
michael@0: {
michael@0: }
michael@0: 
michael@0: #ifdef DEBUG_LAYOUT
michael@0: void
michael@0: nsLeafBoxFrame::GetBoxName(nsAutoString& aName)
michael@0: {
michael@0:    GetFrameName(aName);
michael@0: }
michael@0: #endif
michael@0: 
michael@0: 
michael@0: /**
michael@0:  * Initialize us. This is a good time to get the alignment of the box
michael@0:  */
michael@0: void
michael@0: nsLeafBoxFrame::Init(
michael@0:               nsIContent*      aContent,
michael@0:               nsIFrame*        aParent,
michael@0:               nsIFrame*        aPrevInFlow)
michael@0: {
michael@0:   nsLeafFrame::Init(aContent, aParent, aPrevInFlow);
michael@0: 
michael@0:   if (GetStateBits() & NS_FRAME_FONT_INFLATION_CONTAINER) {
michael@0:     AddStateBits(NS_FRAME_FONT_INFLATION_FLOW_ROOT);
michael@0:   }
michael@0: 
michael@0:   UpdateMouseThrough();
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsLeafBoxFrame::AttributeChanged(int32_t aNameSpaceID,
michael@0:                                  nsIAtom* aAttribute,
michael@0:                                  int32_t aModType)
michael@0: {
michael@0:   nsresult rv = nsLeafFrame::AttributeChanged(aNameSpaceID, aAttribute,
michael@0:                                               aModType);
michael@0: 
michael@0:   if (aAttribute == nsGkAtoms::mousethrough) 
michael@0:     UpdateMouseThrough();
michael@0: 
michael@0:   return rv;
michael@0: }
michael@0: 
michael@0: void nsLeafBoxFrame::UpdateMouseThrough()
michael@0: {
michael@0:   if (mContent) {
michael@0:     static nsIContent::AttrValuesArray strings[] =
michael@0:       {&nsGkAtoms::never, &nsGkAtoms::always, nullptr};
michael@0:     switch (mContent->FindAttrValueIn(kNameSpaceID_None,
michael@0:                                       nsGkAtoms::mousethrough,
michael@0:                                       strings, eCaseMatters)) {
michael@0:       case 0: AddStateBits(NS_FRAME_MOUSE_THROUGH_NEVER); break;
michael@0:       case 1: AddStateBits(NS_FRAME_MOUSE_THROUGH_ALWAYS); break;
michael@0:       case 2: {
michael@0:           RemoveStateBits(NS_FRAME_MOUSE_THROUGH_ALWAYS);
michael@0:           RemoveStateBits(NS_FRAME_MOUSE_THROUGH_NEVER);
michael@0:           break;
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: nsLeafBoxFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
michael@0:                                  const nsRect&           aDirtyRect,
michael@0:                                  const nsDisplayListSet& aLists)
michael@0: {
michael@0:   // REVIEW: GetFrameForPoint used to not report events for the background
michael@0:   // layer, whereas this code will put an event receiver for this frame in the
michael@0:   // BlockBorderBackground() list. But I don't see any need to preserve
michael@0:   // that anomalous behaviour. The important thing I'm preserving is that
michael@0:   // leaf boxes continue to receive events in the foreground layer.
michael@0:   DisplayBorderBackgroundOutline(aBuilder, aLists);
michael@0: 
michael@0:   if (!aBuilder->IsForEventDelivery() || !IsVisibleForPainting(aBuilder))
michael@0:     return;
michael@0: 
michael@0:   aLists.Content()->AppendNewToTop(new (aBuilder)
michael@0:     nsDisplayEventReceiver(aBuilder, this));
michael@0: }
michael@0: 
michael@0: /* virtual */ nscoord
michael@0: nsLeafBoxFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
michael@0: {
michael@0:   nscoord result;
michael@0:   DISPLAY_MIN_WIDTH(this, result);
michael@0:   nsBoxLayoutState state(PresContext(), aRenderingContext);
michael@0:   nsSize minSize = GetMinSize(state);
michael@0: 
michael@0:   // GetMinSize returns border-box width, and we want to return content
michael@0:   // width.  Since Reflow uses the reflow state's border and padding, we
michael@0:   // actually just want to subtract what GetMinSize added, which is the
michael@0:   // result of GetBorderAndPadding.
michael@0:   nsMargin bp;
michael@0:   GetBorderAndPadding(bp);
michael@0: 
michael@0:   result = minSize.width - bp.LeftRight();
michael@0: 
michael@0:   return result;
michael@0: }
michael@0: 
michael@0: /* virtual */ nscoord
michael@0: nsLeafBoxFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
michael@0: {
michael@0:   nscoord result;
michael@0:   DISPLAY_PREF_WIDTH(this, result);
michael@0:   nsBoxLayoutState state(PresContext(), aRenderingContext);
michael@0:   nsSize prefSize = GetPrefSize(state);
michael@0: 
michael@0:   // GetPrefSize returns border-box width, and we want to return content
michael@0:   // width.  Since Reflow uses the reflow state's border and padding, we
michael@0:   // actually just want to subtract what GetPrefSize added, which is the
michael@0:   // result of GetBorderAndPadding.
michael@0:   nsMargin bp;
michael@0:   GetBorderAndPadding(bp);
michael@0: 
michael@0:   result = prefSize.width - bp.LeftRight();
michael@0: 
michael@0:   return result;
michael@0: }
michael@0: 
michael@0: nscoord
michael@0: nsLeafBoxFrame::GetIntrinsicWidth()
michael@0: {
michael@0:   // No intrinsic width
michael@0:   return 0;
michael@0: }
michael@0: 
michael@0: nsSize
michael@0: nsLeafBoxFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
michael@0:                                 nsSize aCBSize, nscoord aAvailableWidth,
michael@0:                                 nsSize aMargin, nsSize aBorder,
michael@0:                                 nsSize aPadding, bool aShrinkWrap)
michael@0: {
michael@0:   // Important: NOT calling our direct superclass here!
michael@0:   return nsFrame::ComputeAutoSize(aRenderingContext, aCBSize, aAvailableWidth,
michael@0:                                   aMargin, aBorder, aPadding, aShrinkWrap);
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsLeafBoxFrame::Reflow(nsPresContext*   aPresContext,
michael@0:                      nsHTMLReflowMetrics&     aDesiredSize,
michael@0:                      const nsHTMLReflowState& aReflowState,
michael@0:                      nsReflowStatus&          aStatus)
michael@0: {
michael@0:   // This is mostly a copy of nsBoxFrame::Reflow().
michael@0:   // We aren't able to share an implementation because of the frame
michael@0:   // class hierarchy.  If you make changes here, please keep
michael@0:   // nsBoxFrame::Reflow in sync.
michael@0: 
michael@0:   DO_GLOBAL_REFLOW_COUNT("nsLeafBoxFrame");
michael@0:   DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
michael@0: 
michael@0:   NS_ASSERTION(aReflowState.ComputedWidth() >=0 &&
michael@0:                aReflowState.ComputedHeight() >= 0, "Computed Size < 0");
michael@0: 
michael@0: #ifdef DO_NOISY_REFLOW
michael@0:   printf("\n-------------Starting LeafBoxFrame Reflow ----------------------------\n");
michael@0:   printf("%p ** nsLBF::Reflow %d R: ", this, myCounter++);
michael@0:   switch (aReflowState.reason) {
michael@0:     case eReflowReason_Initial:
michael@0:       printf("Ini");break;
michael@0:     case eReflowReason_Incremental:
michael@0:       printf("Inc");break;
michael@0:     case eReflowReason_Resize:
michael@0:       printf("Rsz");break;
michael@0:     case eReflowReason_StyleChange:
michael@0:       printf("Sty");break;
michael@0:     case eReflowReason_Dirty:
michael@0:       printf("Drt ");
michael@0:       break;
michael@0:     default:printf("<unknown>%d", aReflowState.reason);break;
michael@0:   }
michael@0:   
michael@0:   printSize("AW", aReflowState.AvailableWidth());
michael@0:   printSize("AH", aReflowState.AvailableHeight());
michael@0:   printSize("CW", aReflowState.ComputedWidth());
michael@0:   printSize("CH", aReflowState.ComputedHeight());
michael@0: 
michael@0:   printf(" *\n");
michael@0: 
michael@0: #endif
michael@0: 
michael@0:   aStatus = NS_FRAME_COMPLETE;
michael@0: 
michael@0:   // create the layout state
michael@0:   nsBoxLayoutState state(aPresContext, aReflowState.rendContext);
michael@0: 
michael@0:   nsSize computedSize(aReflowState.ComputedWidth(),aReflowState.ComputedHeight());
michael@0: 
michael@0:   nsMargin m;
michael@0:   m = aReflowState.ComputedPhysicalBorderPadding();
michael@0: 
michael@0:   //GetBorderAndPadding(m);
michael@0: 
michael@0:   // this happens sometimes. So lets handle it gracefully.
michael@0:   if (aReflowState.ComputedHeight() == 0) {
michael@0:     nsSize minSize = GetMinSize(state);
michael@0:     computedSize.height = minSize.height - m.top - m.bottom;
michael@0:   }
michael@0: 
michael@0:   nsSize prefSize(0,0);
michael@0: 
michael@0:   // if we are told to layout intrinic then get our preferred size.
michael@0:   if (computedSize.width == NS_INTRINSICSIZE || computedSize.height == NS_INTRINSICSIZE) {
michael@0:      prefSize = GetPrefSize(state);
michael@0:      nsSize minSize = GetMinSize(state);
michael@0:      nsSize maxSize = GetMaxSize(state);
michael@0:      prefSize = BoundsCheck(minSize, prefSize, maxSize);
michael@0:   }
michael@0: 
michael@0:   // get our desiredSize
michael@0:   if (aReflowState.ComputedWidth() == NS_INTRINSICSIZE) {
michael@0:     computedSize.width = prefSize.width;
michael@0:   } else {
michael@0:     computedSize.width += m.left + m.right;
michael@0:   }
michael@0: 
michael@0:   if (aReflowState.ComputedHeight() == NS_INTRINSICSIZE) {
michael@0:     computedSize.height = prefSize.height;
michael@0:   } else {
michael@0:     computedSize.height += m.top + m.bottom;
michael@0:   }
michael@0: 
michael@0:   // handle reflow state min and max sizes
michael@0:   // XXXbz the width handling here seems to be wrong, since
michael@0:   // mComputedMin/MaxWidth is a content-box size, whole
michael@0:   // computedSize.width is a border-box size...
michael@0:   if (computedSize.width > aReflowState.ComputedMaxWidth())
michael@0:     computedSize.width = aReflowState.ComputedMaxWidth();
michael@0: 
michael@0:   if (computedSize.width < aReflowState.ComputedMinWidth())
michael@0:     computedSize.width = aReflowState.ComputedMinWidth();
michael@0: 
michael@0:   // Now adjust computedSize.height for our min and max computed
michael@0:   // height.  The only problem is that those are content-box sizes,
michael@0:   // while computedSize.height is a border-box size.  So subtract off
michael@0:   // m.TopBottom() before adjusting, then readd it.
michael@0:   computedSize.height = std::max(0, computedSize.height - m.TopBottom());
michael@0:   computedSize.height = NS_CSS_MINMAX(computedSize.height,
michael@0:                                       aReflowState.ComputedMinHeight(),
michael@0:                                       aReflowState.ComputedMaxHeight());
michael@0:   computedSize.height += m.TopBottom();
michael@0: 
michael@0:   nsRect r(mRect.x, mRect.y, computedSize.width, computedSize.height);
michael@0: 
michael@0:   SetBounds(state, r);
michael@0:  
michael@0:   // layout our children
michael@0:   Layout(state);
michael@0:   
michael@0:   // ok our child could have gotten bigger. So lets get its bounds
michael@0:   aDesiredSize.Width() = mRect.width;
michael@0:   aDesiredSize.Height() = mRect.height;
michael@0:   aDesiredSize.SetTopAscent(GetBoxAscent(state));
michael@0: 
michael@0:   // the overflow rect is set in SetBounds() above
michael@0:   aDesiredSize.mOverflowAreas = GetOverflowAreas();
michael@0: 
michael@0: #ifdef DO_NOISY_REFLOW
michael@0:   {
michael@0:     printf("%p ** nsLBF(done) W:%d H:%d  ", this, aDesiredSize.Width(), aDesiredSize.Height());
michael@0: 
michael@0:     if (maxElementWidth) {
michael@0:       printf("MW:%d\n", *maxElementWidth); 
michael@0:     } else {
michael@0:       printf("MW:?\n"); 
michael@0:     }
michael@0: 
michael@0:   }
michael@0: #endif
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: #ifdef DEBUG_FRAME_DUMP
michael@0: nsresult
michael@0: nsLeafBoxFrame::GetFrameName(nsAString& aResult) const
michael@0: {
michael@0:   return MakeFrameName(NS_LITERAL_STRING("LeafBox"), aResult);
michael@0: }
michael@0: #endif
michael@0: 
michael@0: nsIAtom*
michael@0: nsLeafBoxFrame::GetType() const
michael@0: {
michael@0:   return nsGkAtoms::leafBoxFrame;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsLeafBoxFrame::CharacterDataChanged(CharacterDataChangeInfo* aInfo)
michael@0: {
michael@0:   MarkIntrinsicWidthsDirty();
michael@0:   return nsLeafFrame::CharacterDataChanged(aInfo);
michael@0: }
michael@0: 
michael@0: /* virtual */ nsSize
michael@0: nsLeafBoxFrame::GetPrefSize(nsBoxLayoutState& aState)
michael@0: {
michael@0:     return nsBox::GetPrefSize(aState);
michael@0: }
michael@0: 
michael@0: /* virtual */ nsSize
michael@0: nsLeafBoxFrame::GetMinSize(nsBoxLayoutState& aState)
michael@0: {
michael@0:     return nsBox::GetMinSize(aState);
michael@0: }
michael@0: 
michael@0: /* virtual */ nsSize
michael@0: nsLeafBoxFrame::GetMaxSize(nsBoxLayoutState& aState)
michael@0: {
michael@0:     return nsBox::GetMaxSize(aState);
michael@0: }
michael@0: 
michael@0: /* virtual */ nscoord
michael@0: nsLeafBoxFrame::GetFlex(nsBoxLayoutState& aState)
michael@0: {
michael@0:     return nsBox::GetFlex(aState);
michael@0: }
michael@0: 
michael@0: /* virtual */ nscoord
michael@0: nsLeafBoxFrame::GetBoxAscent(nsBoxLayoutState& aState)
michael@0: {
michael@0:     return nsBox::GetBoxAscent(aState);
michael@0: }
michael@0: 
michael@0: /* virtual */ void
michael@0: nsLeafBoxFrame::MarkIntrinsicWidthsDirty()
michael@0: {
michael@0:   // Don't call base class method, since everything it does is within an
michael@0:   // IsBoxWrapped check.
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsLeafBoxFrame::DoLayout(nsBoxLayoutState& aState)
michael@0: {
michael@0:     return nsBox::DoLayout(aState);
michael@0: }