mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-08 12:37:37 +00:00
279 lines
9.2 KiB
C++
279 lines
9.2 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"
|
|
|
|
// Interface IDs
|
|
static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID);
|
|
static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
|
|
|
|
class RootFrame : public nsHTMLContainerFrame {
|
|
public:
|
|
RootFrame(nsIContent* aContent);
|
|
|
|
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_TRUE;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHOD ListTag(FILE* out) const;
|
|
|
|
protected:
|
|
virtual PRIntn GetSkipSides() const;
|
|
};
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
nsresult
|
|
NS_NewHTMLFrame(nsIContent* aContent, nsIFrame* aParentFrame,
|
|
nsIFrame*& aResult)
|
|
{
|
|
RootFrame* frame = new RootFrame(aContent);
|
|
if (nsnull == frame) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
aResult = frame;
|
|
return NS_OK;
|
|
}
|
|
|
|
RootFrame::RootFrame(nsIContent* aContent)
|
|
: nsHTMLContainerFrame(aContent, nsnull)
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RootFrame::SetInitialChildList(nsIPresContext& aPresContext,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aChildList)
|
|
{
|
|
mFirstChild = aChildList;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
RootFrame::Reflow(nsIPresContext& aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
NS_FRAME_TRACE_REFLOW_IN("RootFrame::Reflow");
|
|
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
// XXX Copy the reflow state so that we can change the
|
|
// reason in cases where we're inserting and deleting
|
|
// frames from the root. Troy may want to reconstruct
|
|
// this routine.
|
|
nsHTMLReflowState reflowState(aReflowState);
|
|
|
|
if (eReflowReason_Incremental == reflowState.reason) {
|
|
// See if we're the target frame
|
|
nsIFrame* targetFrame;
|
|
reflowState.reflowCommand->GetTarget(targetFrame);
|
|
if (this == targetFrame) {
|
|
nsIReflowCommand::ReflowType reflowType;
|
|
nsIFrame* childFrame;
|
|
|
|
// Get the reflow type
|
|
reflowState.reflowCommand->GetType(reflowType);
|
|
|
|
if ((nsIReflowCommand::FrameAppended == reflowType) ||
|
|
(nsIReflowCommand::FrameInserted == reflowType)) {
|
|
// Insert the frame into the child list
|
|
reflowState.reflowCommand->GetChildFrame(childFrame);
|
|
if (nsnull == mFirstChild) {
|
|
mFirstChild = childFrame;
|
|
} else {
|
|
nsIFrame* lastChild = LastFrame(mFirstChild);
|
|
lastChild->SetNextSibling(childFrame);
|
|
}
|
|
// XXX This is wrong. Only the new child should be reflowed
|
|
// with this reason. The rest should just be resized.
|
|
reflowState.reason = eReflowReason_Initial;
|
|
} else if (nsIReflowCommand::FrameRemoved == reflowType) {
|
|
nsIFrame* deletedFrame;
|
|
|
|
// Get the child frame we should delete
|
|
reflowState.reflowCommand->GetChildFrame(deletedFrame);
|
|
|
|
// Remove it from the child list
|
|
if (deletedFrame == mFirstChild) {
|
|
deletedFrame->GetNextSibling(mFirstChild);
|
|
} else {
|
|
nsIFrame* prevSibling = nsnull;
|
|
nsIFrame* f;
|
|
for (f = mFirstChild; nsnull != f; f->GetNextSibling(f)) {
|
|
if (f == deletedFrame) {
|
|
break;
|
|
}
|
|
|
|
prevSibling = f;
|
|
}
|
|
|
|
if (nsnull != f) {
|
|
nsIFrame* nextSibling;
|
|
|
|
f->GetNextSibling(nextSibling);
|
|
NS_ASSERTION(nsnull != prevSibling, "null pointer");
|
|
prevSibling->SetNextSibling(nextSibling);
|
|
}
|
|
}
|
|
deletedFrame->SetNextSibling(nsnull);
|
|
|
|
// Delete the frame
|
|
deletedFrame->DeleteFrame(aPresContext);
|
|
reflowState.reason = eReflowReason_Resize;
|
|
}
|
|
|
|
} else {
|
|
nsIFrame* nextFrame;
|
|
// Get the next frame in the reflow chain
|
|
reflowState.reflowCommand->GetNext(nextFrame);
|
|
NS_ASSERTION(nextFrame == mFirstChild, "unexpected next reflow command frame");
|
|
}
|
|
}
|
|
|
|
// Reflow our child frame
|
|
if (nsnull != mFirstChild) {
|
|
// Compute how much space to reserve for our border and padding
|
|
const nsStyleSpacing* spacing =
|
|
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
|
|
nsMargin borderPadding;
|
|
spacing->CalcBorderPaddingFor(this, borderPadding);
|
|
|
|
nsSize kidMaxSize(reflowState.maxSize);
|
|
kidMaxSize.width -= borderPadding.left + borderPadding.right;
|
|
kidMaxSize.height -= borderPadding.top + borderPadding.bottom;
|
|
nsHTMLReflowMetrics desiredSize(nsnull);
|
|
nsHTMLReflowState kidReflowState(aPresContext, mFirstChild, reflowState,
|
|
kidMaxSize);
|
|
// XXX HACK
|
|
kidReflowState.widthConstraint = eHTMLFrameConstraint_Fixed;
|
|
kidReflowState.minWidth = kidMaxSize.width;
|
|
kidReflowState.heightConstraint = eHTMLFrameConstraint_Fixed;
|
|
kidReflowState.minHeight = kidMaxSize.height;
|
|
nsIHTMLReflow* htmlReflow;
|
|
|
|
if (NS_OK == mFirstChild->QueryInterface(kIHTMLReflowIID, (void**)&htmlReflow)) {
|
|
ReflowChild(mFirstChild, aPresContext, desiredSize, kidReflowState, aStatus);
|
|
|
|
// Place and size the child. Because we told the child it was fixed make sure
|
|
// it's at least as big as we told it. This handles the case where the child
|
|
// ignores the reflow state constraints
|
|
if (desiredSize.width < kidMaxSize.width) {
|
|
desiredSize.width = kidMaxSize.width;
|
|
}
|
|
if (desiredSize.height < kidMaxSize.height) {
|
|
desiredSize.height = kidMaxSize.height;
|
|
}
|
|
nsRect rect(borderPadding.left, borderPadding.top, desiredSize.width, desiredSize.height);
|
|
mFirstChild->SetRect(rect);
|
|
|
|
// XXX We should resolve the details of who/when DidReflow() notifications
|
|
// are sent...
|
|
htmlReflow->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
|
|
}
|
|
|
|
// If this is a resize reflow and we have non-zero border or padding
|
|
// then do a repaint to make sure we repaint correctly.
|
|
// XXX We could be smarter about only damaging the border/padding area
|
|
// that was affected by the resize...
|
|
if ((eReflowReason_Resize == reflowState.reason) &&
|
|
((borderPadding.left != 0) || (borderPadding.top != 0) ||
|
|
(borderPadding.right != 0) || (borderPadding.bottom) != 0)) {
|
|
nsRect damageRect(0, 0, reflowState.maxSize.width, reflowState.maxSize.height);
|
|
Invalidate(damageRect, PR_FALSE);
|
|
}
|
|
}
|
|
|
|
// Return the max size as our desired size
|
|
aDesiredSize.width = reflowState.maxSize.width;
|
|
aDesiredSize.height = reflowState.maxSize.height;
|
|
aDesiredSize.ascent = aDesiredSize.height;
|
|
aDesiredSize.descent = 0;
|
|
|
|
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;
|
|
}
|
|
|
|
// Output the frame's tag
|
|
NS_IMETHODIMP
|
|
RootFrame::ListTag(FILE* out) const
|
|
{
|
|
if (nsnull == mContent) {
|
|
fprintf(out, "*Root(-1)@%p", this);
|
|
}
|
|
else {
|
|
return nsFrame::ListTag(out);
|
|
}
|
|
return NS_OK;
|
|
}
|