mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-28 19:38:13 +00:00
c4b2263dbf
changed SetRect() so it only resizes the child frame larger if its 'height' is set to 'auto'
347 lines
11 KiB
C++
347 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
#include "nsHTMLParts.h"
|
|
#include "nsContainerFrame.h"
|
|
#include "nsCSSRendering.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsIReflowCommand.h"
|
|
#include "nsIPresContext.h"
|
|
#include "nsIStyleContext.h"
|
|
#include "nsViewsCID.h"
|
|
#include "nsIView.h"
|
|
#include "nsIViewManager.h"
|
|
#include "nsIWidget.h"
|
|
#include "nsHTMLIIDs.h"
|
|
#include "nsPageFrame.h"
|
|
#include "nsIRenderingContext.h"
|
|
#include "nsGUIEvent.h"
|
|
#include "nsDOMEvent.h"
|
|
#include "nsStyleConsts.h"
|
|
#include "nsIViewManager.h"
|
|
#include "nsHTMLAtoms.h"
|
|
#include "nsIEventStateManager.h"
|
|
#include "nsIDeviceContext.h"
|
|
#include "nsIScrollableView.h"
|
|
#include "nsIAreaFrame.h"
|
|
|
|
// Interface IDs
|
|
static NS_DEFINE_IID(kAreaFrameIID, NS_IAREAFRAME_IID);
|
|
static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID);
|
|
static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
|
|
|
|
/**
|
|
* Root frame class.
|
|
*
|
|
* The root frame is the parent frame for the document element's frame.
|
|
* It only supports having a single child frame which must be one of the
|
|
* following:
|
|
* - scroll frame
|
|
* - area frame
|
|
* - page sequence frame
|
|
*/
|
|
class RootFrame : public nsHTMLContainerFrame {
|
|
public:
|
|
NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aChildList);
|
|
NS_IMETHOD Reflow(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
NS_IMETHOD HandleEvent(nsIPresContext& aPresContext,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus& aEventStatus);
|
|
NS_IMETHOD IsPercentageBase(PRBool& aBase) const {
|
|
aBase = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHOD GetFrameName(nsString& aResult) const;
|
|
|
|
// XXX Temporary hack...
|
|
NS_IMETHOD SetRect(const nsRect& aRect);
|
|
|
|
protected:
|
|
virtual PRIntn GetSkipSides() const;
|
|
|
|
private:
|
|
nscoord mNaturalHeight;
|
|
};
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
nsresult
|
|
NS_NewRootFrame(nsIFrame*& aResult)
|
|
{
|
|
RootFrame* frame = new RootFrame;
|
|
if (nsnull == frame) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
aResult = frame;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RootFrame::SetInitialChildList(nsIPresContext& aPresContext,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aChildList)
|
|
{
|
|
mFrames.SetFrames(aChildList);
|
|
return NS_OK;
|
|
}
|
|
|
|
// XXX Temporary hack until we support the CSS2 'min-width', 'max-width',
|
|
// 'min-height', and 'max-height' properties. Then we can do this in a top-down
|
|
// fashion
|
|
NS_IMETHODIMP
|
|
RootFrame::SetRect(const nsRect& aRect)
|
|
{
|
|
nsresult rv = nsHTMLContainerFrame::SetRect(aRect);
|
|
|
|
// Make sure our child's frame is adjusted as well
|
|
// Note: only do this if it's 'height' is 'auto'
|
|
nsIFrame* kidFrame = mFrames.FirstChild();
|
|
if (nsnull != kidFrame) {
|
|
nsStylePosition* kidPosition;
|
|
kidFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)kidPosition);
|
|
|
|
if (eStyleUnit_Auto == kidPosition->mHeight.GetUnit()) {
|
|
nscoord yDelta = aRect.height - mNaturalHeight;
|
|
nsSize kidSize;
|
|
|
|
kidFrame->GetSize(kidSize);
|
|
kidFrame->SizeTo(kidSize.width, kidSize.height + yDelta);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RootFrame::Reflow(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
NS_FRAME_TRACE_REFLOW_IN("RootFrame::Reflow");
|
|
NS_PRECONDITION(nsnull == aDesiredSize.maxElementSize, "unexpected request");
|
|
|
|
// Initialize OUT parameter
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
|
|
PRBool isChildInitialReflow = PR_FALSE;
|
|
|
|
// Check for an incremental reflow
|
|
if (eReflowReason_Incremental == aReflowState.reason) {
|
|
// See if we're the target frame
|
|
nsIFrame* targetFrame;
|
|
aReflowState.reflowCommand->GetTarget(targetFrame);
|
|
if (this == targetFrame) {
|
|
nsIReflowCommand::ReflowType reflowType;
|
|
nsIFrame* childFrame;
|
|
|
|
// Get the reflow type
|
|
aReflowState.reflowCommand->GetType(reflowType);
|
|
|
|
if ((nsIReflowCommand::FrameAppended == reflowType) ||
|
|
(nsIReflowCommand::FrameInserted == reflowType)) {
|
|
|
|
NS_ASSERTION(mFrames.IsEmpty(), "only one child frame allowed");
|
|
|
|
// Insert the frame into the child list
|
|
aReflowState.reflowCommand->GetChildFrame(childFrame);
|
|
mFrames.SetFrames(childFrame);
|
|
|
|
// It's the child frame's initial reflow
|
|
isChildInitialReflow = PR_TRUE;
|
|
|
|
} else if (nsIReflowCommand::FrameRemoved == reflowType) {
|
|
nsIFrame* deletedFrame;
|
|
|
|
// Get the child frame we should delete
|
|
aReflowState.reflowCommand->GetChildFrame(deletedFrame);
|
|
NS_ASSERTION(deletedFrame == mFrames.FirstChild(), "not a child frame");
|
|
|
|
// Remove it from the child list
|
|
if (deletedFrame == mFrames.FirstChild()) {
|
|
// Damage the area occupied by the deleted frame
|
|
nsRect damageRect;
|
|
deletedFrame->GetRect(damageRect);
|
|
Invalidate(damageRect, PR_FALSE);
|
|
|
|
mFrames.DeleteFrame(aPresContext, deletedFrame);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
nsIFrame* nextFrame;
|
|
// Get the next frame in the reflow chain
|
|
aReflowState.reflowCommand->GetNext(nextFrame);
|
|
NS_ASSERTION(nextFrame == mFrames.FirstChild(), "unexpected next reflow command frame");
|
|
}
|
|
}
|
|
|
|
// Reflow our one and only child frame
|
|
nsHTMLReflowMetrics kidDesiredSize(nsnull);
|
|
if (mFrames.IsEmpty()) {
|
|
// Return our desired size
|
|
aDesiredSize.width = aDesiredSize.height = 0;
|
|
aDesiredSize.ascent = aDesiredSize.descent = 0;
|
|
|
|
} else {
|
|
nsIFrame* kidFrame = mFrames.FirstChild();
|
|
|
|
// We must pass in that the available height is unconstrained, because
|
|
// constrained is only for when we're paginated...
|
|
nsHTMLReflowState kidReflowState(aPresContext, kidFrame, aReflowState,
|
|
nsSize(aReflowState.availableWidth, NS_UNCONSTRAINEDSIZE));
|
|
if (isChildInitialReflow) {
|
|
kidReflowState.reason = eReflowReason_Initial;
|
|
kidReflowState.reflowCommand = nsnull;
|
|
}
|
|
|
|
// XXX TROY
|
|
#if 0
|
|
// For a height that's 'auto', make the frame as big as the available space
|
|
// minus any top and bottom margins
|
|
if (NS_AUTOHEIGHT == kidReflowState.computedHeight) {
|
|
kidReflowState.computedHeight = aReflowState.availableHeight -
|
|
kidReflowState.computedMargin.top - kidReflowState.computedMargin.bottom;
|
|
|
|
// Computed height is for the content area so reduce it by the amount of
|
|
// space taken up by border and padding
|
|
nsMargin borderPadding;
|
|
kidReflowState.ComputeBorderPaddingFor(myOnlyChild, &aReflowState, borderPadding);
|
|
kidReflowState.computedHeight -= borderPadding.top + borderPadding.bottom;
|
|
}
|
|
#endif
|
|
|
|
// Reflow the frame
|
|
nsIHTMLReflow* htmlReflow;
|
|
if (NS_OK == kidFrame->QueryInterface(kIHTMLReflowIID, (void**)&htmlReflow)) {
|
|
// XXX Temporary hack until the block/inline code changes. It expects
|
|
// the available width to be the space minus any margins...
|
|
kidReflowState.availableWidth -= kidReflowState.computedMargin.left +
|
|
kidReflowState.computedMargin.right;
|
|
ReflowChild(kidFrame, aPresContext, kidDesiredSize, kidReflowState,
|
|
aStatus);
|
|
|
|
// Get the total size including any space needed for absolute positioned
|
|
// elements
|
|
// XXX It would be nice if this were part of the reflow metrics...
|
|
nsIAreaFrame* areaFrame;
|
|
if (NS_SUCCEEDED(kidFrame->QueryInterface(kAreaFrameIID, (void**)&areaFrame))) {
|
|
nscoord xMost, yMost;
|
|
|
|
areaFrame->GetPositionedInfo(xMost, yMost);
|
|
if (xMost > kidDesiredSize.width) {
|
|
kidDesiredSize.width = xMost;
|
|
}
|
|
if (yMost > kidDesiredSize.height) {
|
|
kidDesiredSize.height = yMost;
|
|
}
|
|
}
|
|
|
|
nsRect rect(kidReflowState.computedMargin.left, kidReflowState.computedMargin.top,
|
|
kidDesiredSize.width, kidDesiredSize.height);
|
|
kidFrame->SetRect(rect);
|
|
|
|
// XXX TROY
|
|
#if 0
|
|
// XXX We should resolve the details of who/when DidReflow()
|
|
// notifications are sent...
|
|
htmlReflow->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
|
|
#endif
|
|
}
|
|
|
|
// If this is a resize reflow then do a repaint
|
|
if (eReflowReason_Resize == aReflowState.reason) {
|
|
nsRect damageRect(0, 0, aReflowState.availableWidth, aReflowState.availableHeight);
|
|
Invalidate(damageRect, PR_FALSE);
|
|
}
|
|
|
|
// Return our desired size
|
|
aDesiredSize.width = kidDesiredSize.width + kidReflowState.computedMargin.left +
|
|
kidReflowState.computedMargin.right;
|
|
aDesiredSize.height = kidDesiredSize.height + kidReflowState.computedMargin.top +
|
|
kidReflowState.computedMargin.bottom;
|
|
aDesiredSize.ascent = aDesiredSize.height;
|
|
aDesiredSize.descent = 0;
|
|
|
|
// Set NS_FRAME_OUTSIDE_CHILDREN flag, or reset it, as appropriate
|
|
nsFrameState kidState;
|
|
kidFrame->GetFrameState(kidState);
|
|
if (NS_FRAME_OUTSIDE_CHILDREN & kidState) {
|
|
nscoord kidXMost = kidReflowState.computedMargin.left +
|
|
kidDesiredSize.mCombinedArea.XMost();
|
|
nscoord kidYMost = kidReflowState.computedMargin.top +
|
|
kidDesiredSize.mCombinedArea.YMost();
|
|
|
|
if ((kidXMost > aDesiredSize.width) || (kidYMost > aDesiredSize.height)) {
|
|
aDesiredSize.mCombinedArea.x = 0;
|
|
aDesiredSize.mCombinedArea.y = 0;
|
|
aDesiredSize.mCombinedArea.width = PR_MAX(aDesiredSize.width, kidXMost);
|
|
aDesiredSize.mCombinedArea.height = PR_MAX(aDesiredSize.height, kidYMost);
|
|
mState |= NS_FRAME_OUTSIDE_CHILDREN;
|
|
|
|
} else {
|
|
mState &= ~NS_FRAME_OUTSIDE_CHILDREN;
|
|
}
|
|
|
|
} else {
|
|
mState &= ~NS_FRAME_OUTSIDE_CHILDREN;
|
|
}
|
|
|
|
// XXX Temporary hack. Remember this for later when our parent resizes us
|
|
mNaturalHeight = aDesiredSize.height;
|
|
}
|
|
|
|
NS_FRAME_TRACE_REFLOW_OUT("RootFrame::Reflow", aStatus);
|
|
return NS_OK;
|
|
}
|
|
|
|
PRIntn
|
|
RootFrame::GetSkipSides() const
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RootFrame::HandleEvent(nsIPresContext& aPresContext,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus& aEventStatus)
|
|
{
|
|
if (nsEventStatus_eConsumeNoDefault == aEventStatus) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aEvent->message == NS_MOUSE_LEFT_BUTTON_UP ||
|
|
aEvent->message == NS_MOUSE_MIDDLE_BUTTON_UP ||
|
|
aEvent->message == NS_MOUSE_RIGHT_BUTTON_UP) {
|
|
nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RootFrame::GetFrameName(nsString& aResult) const
|
|
{
|
|
return MakeFrameName("Root", aResult);
|
|
}
|