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Changed to use the new reflow command handling

This commit is contained in:
troy%netscape.com 1999-07-24 03:59:47 +00:00
Родитель cbf519418d
Коммит 13778e63f7
2 изменённых файлов: 242 добавлений и 140 удалений
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191
layout/generic/nsViewportFrame.cpp
Просмотреть файл

@ -24,6 +24,8 @@
#include "nsIScrollableView.h"
#include "nsIDeviceContext.h"
#include "nsIPresContext.h"
#include "nsIReflowCommand.h"
#include "nsIPresShell.h"
static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID);
@ -49,6 +51,19 @@ public:
NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList);
NS_IMETHOD AppendFrames(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aFrameList);
NS_IMETHOD InsertFrames(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList);
NS_IMETHOD RemoveFrame(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame);
NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
nsIAtom** aListName) const;
@ -120,11 +135,14 @@ ViewportFrame::SetInitialChildList(nsIPresContext& aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList)
{
nsresult rv;
nsresult rv = NS_OK;
// See which child list to add the frames to
#ifdef NS_DEBUG
nsFrame::VerifyDirtyBitSet(aChildList);
#endif
if (nsLayoutAtoms::fixedList == aListName) {
mFixedFrames.SetFrames(aChildList);
rv = NS_OK;
} else {
rv = nsContainerFrame::SetInitialChildList(aPresContext, aListName, aChildList);
}
@ -132,6 +150,82 @@ ViewportFrame::SetInitialChildList(nsIPresContext& aPresContext,
return rv;
}
NS_IMETHODIMP
ViewportFrame::AppendFrames(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aFrameList)
{
nsresult rv = NS_OK;
// We only expect incremental changes for our fixed frames
NS_PRECONDITION(nsLayoutAtoms::fixedList == aListName, "unexpected child list");
// Add the frames to our list of fixed position frames
#ifdef NS_DEBUG
nsFrame::VerifyDirtyBitSet(aFrameList);
#endif
mFixedFrames.AppendFrames(nsnull, aFrameList);
// Generate a reflow command to reflow the dirty frames
nsIReflowCommand* reflowCmd;
rv = NS_NewHTMLReflowCommand(&reflowCmd, this, nsIReflowCommand::ReflowDirty);
if (NS_SUCCEEDED(rv)) {
reflowCmd->SetChildListName(nsLayoutAtoms::fixedList);
aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
return rv;
}
NS_IMETHODIMP
ViewportFrame::InsertFrames(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList)
{
nsresult rv = NS_OK;
// We only expect incremental changes for our fixed frames
NS_PRECONDITION(nsLayoutAtoms::fixedList == aListName, "unexpected child list");
// Insert the new frames
#ifdef NS_DEBUG
nsFrame::VerifyDirtyBitSet(aFrameList);
#endif
mFixedFrames.InsertFrames(nsnull, aPrevFrame, aFrameList);
// Generate a reflow command to reflow the dirty frames
nsIReflowCommand* reflowCmd;
rv = NS_NewHTMLReflowCommand(&reflowCmd, this, nsIReflowCommand::ReflowDirty);
if (NS_SUCCEEDED(rv)) {
reflowCmd->SetChildListName(nsLayoutAtoms::fixedList);
aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
return rv;
}
NS_IMETHODIMP
ViewportFrame::RemoveFrame(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame)
{
// We only expect incremental changes for our fixed frames
NS_PRECONDITION(nsLayoutAtoms::fixedList == aListName, "unexpected child list");
PRBool result = mFixedFrames.DestroyFrame(aPresContext, aOldFrame);
NS_ASSERTION(result, "didn't find frame to delete");
// Because fixed frames aren't part of a flow, there's no additional
// work to do, e.g. reflowing sibling frames. And because fixed frames
// have a view, we don't need to repaint
return NS_OK;
}
NS_IMETHODIMP
ViewportFrame::GetAdditionalChildListName(PRInt32 aIndex,
nsIAtom** aListName) const
@ -290,65 +384,35 @@ ViewportFrame::IncrementalReflow(nsIPresContext& aPresContext,
const nsHTMLReflowState& aReflowState)
{
nsIReflowCommand::ReflowType type;
nsIFrame* newFrames;
PRInt32 numFrames;
// Get the type of reflow command
aReflowState.reflowCommand->GetType(type);
// Handle each specific type
if (nsIReflowCommand::FrameAppended == type) {
// Add the frames to our list of fixed position frames
aReflowState.reflowCommand->GetChildFrame(newFrames);
NS_ASSERTION(nsnull != newFrames, "null child list");
numFrames = LengthOf(newFrames);
mFixedFrames.AppendFrames(nsnull, newFrames);
} else if (nsIReflowCommand::FrameRemoved == type) {
// Get the new frame
nsIFrame* childFrame;
aReflowState.reflowCommand->GetChildFrame(childFrame);
PRBool result = mFixedFrames.DestroyFrame(aPresContext, childFrame);
NS_ASSERTION(result, "didn't find frame to delete");
} else if (nsIReflowCommand::FrameInserted == type) {
// Get the previous sibling
nsIFrame* prevSibling;
aReflowState.reflowCommand->GetPrevSiblingFrame(prevSibling);
// Insert the new frames
aReflowState.reflowCommand->GetChildFrame(newFrames);
NS_ASSERTION(nsnull != newFrames, "null child list");
numFrames = LengthOf(newFrames);
mFixedFrames.InsertFrames(nsnull, prevSibling, newFrames);
} else {
NS_ASSERTION(PR_FALSE, "unexpected reflow type");
}
// For inserted and appended reflow commands we need to reflow the
// newly added frames
if ((nsIReflowCommand::FrameAppended == type) ||
(nsIReflowCommand::FrameInserted == type)) {
while (numFrames-- > 0) {
// Calculate how much room is available for the fixed items. That means
// determining if the viewport is scrollable and whether the vertical and/or
// horizontal scrollbars are visible
nscoord width, height;
CalculateFixedContainingBlockSize(aPresContext, aReflowState, width, height);
// Make a copy of the reflow state and change the computed width and height
// to reflect the available space for the fixed items
// XXX Find a cleaner way to do this...
nsHTMLReflowState reflowState(aReflowState);
reflowState.mComputedWidth = width;
reflowState.mComputedHeight = height;
// The only type of reflow command we expect is that we have dirty
// child frames to reflow
NS_ASSERTION(nsIReflowCommand::ReflowDirty, "unexpected reflow type");
// Calculate how much room is available for the fixed items. That means
// determining if the viewport is scrollable and whether the vertical and/or
// horizontal scrollbars are visible
nscoord width, height;
CalculateFixedContainingBlockSize(aPresContext, aReflowState, width, height);
// Make a copy of the reflow state and change the computed width and height
// to reflect the available space for the fixed items
// XXX Find a cleaner way to do this...
nsHTMLReflowState reflowState(aReflowState);
reflowState.mComputedWidth = width;
reflowState.mComputedHeight = height;
// Walk the fixed child frames and reflow the dirty frames
for (nsIFrame* f = mFixedFrames.FirstChild(); f; f->GetNextSibling(&f)) {
nsFrameState frameState;
f->GetFrameState(&frameState);
if (frameState & NS_FRAME_IS_DIRTY) {
nsReflowStatus status;
ReflowFixedFrame(aPresContext, reflowState, newFrames, PR_TRUE, status);
newFrames->GetNextSibling(&newFrames);
ReflowFixedFrame(aPresContext, reflowState, f, PR_TRUE, status);
}
}
@ -379,14 +443,14 @@ ViewportFrame::Reflow(nsIPresContext& aPresContext,
nsIAtom* listName;
PRBool isFixedChild;
// It's targeted at us. It better be for a 'fixed' frame
// reflow command
// It's targeted at us. It better be for the fixed child list
aReflowState.reflowCommand->GetChildListName(listName);
isFixedChild = nsLayoutAtoms::fixedList == listName;
NS_IF_RELEASE(listName);
NS_ASSERTION(isFixedChild, "unexpected child list");
if (isFixedChild) {
// Handle the incremental reflow command
IncrementalReflow(aPresContext, aReflowState);
isHandled = PR_TRUE;
}
@ -407,19 +471,6 @@ ViewportFrame::Reflow(nsIPresContext& aPresContext,
ReflowFixedFrame(aPresContext, aReflowState, nextFrame, PR_FALSE,
kidStatus);
// XXX Make sure the frame is repainted. For the time being, since we
// have no idea what actually changed repaint it all...
nsIView* view;
nextFrame->GetView(&view);
if (nsnull != view) {
nsIViewManager* viewMgr;
view->GetViewManager(viewMgr);
if (nsnull != viewMgr) {
viewMgr->UpdateView(view, (nsIRegion*)nsnull, NS_VMREFRESH_NO_SYNC);
NS_RELEASE(viewMgr);
}
}
} else {
// Reflow our one and only principal child frame
if (mFrames.NotEmpty()) {

191
layout/html/base/src/nsViewportFrame.cpp
Просмотреть файл

@ -24,6 +24,8 @@
#include "nsIScrollableView.h"
#include "nsIDeviceContext.h"
#include "nsIPresContext.h"
#include "nsIReflowCommand.h"
#include "nsIPresShell.h"
static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID);
@ -49,6 +51,19 @@ public:
NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList);
NS_IMETHOD AppendFrames(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aFrameList);
NS_IMETHOD InsertFrames(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList);
NS_IMETHOD RemoveFrame(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame);
NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
nsIAtom** aListName) const;
@ -120,11 +135,14 @@ ViewportFrame::SetInitialChildList(nsIPresContext& aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList)
{
nsresult rv;
nsresult rv = NS_OK;
// See which child list to add the frames to
#ifdef NS_DEBUG
nsFrame::VerifyDirtyBitSet(aChildList);
#endif
if (nsLayoutAtoms::fixedList == aListName) {
mFixedFrames.SetFrames(aChildList);
rv = NS_OK;
} else {
rv = nsContainerFrame::SetInitialChildList(aPresContext, aListName, aChildList);
}
@ -132,6 +150,82 @@ ViewportFrame::SetInitialChildList(nsIPresContext& aPresContext,
return rv;
}
NS_IMETHODIMP
ViewportFrame::AppendFrames(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aFrameList)
{
nsresult rv = NS_OK;
// We only expect incremental changes for our fixed frames
NS_PRECONDITION(nsLayoutAtoms::fixedList == aListName, "unexpected child list");
// Add the frames to our list of fixed position frames
#ifdef NS_DEBUG
nsFrame::VerifyDirtyBitSet(aFrameList);
#endif
mFixedFrames.AppendFrames(nsnull, aFrameList);
// Generate a reflow command to reflow the dirty frames
nsIReflowCommand* reflowCmd;
rv = NS_NewHTMLReflowCommand(&reflowCmd, this, nsIReflowCommand::ReflowDirty);
if (NS_SUCCEEDED(rv)) {
reflowCmd->SetChildListName(nsLayoutAtoms::fixedList);
aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
return rv;
}
NS_IMETHODIMP
ViewportFrame::InsertFrames(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList)
{
nsresult rv = NS_OK;
// We only expect incremental changes for our fixed frames
NS_PRECONDITION(nsLayoutAtoms::fixedList == aListName, "unexpected child list");
// Insert the new frames
#ifdef NS_DEBUG
nsFrame::VerifyDirtyBitSet(aFrameList);
#endif
mFixedFrames.InsertFrames(nsnull, aPrevFrame, aFrameList);
// Generate a reflow command to reflow the dirty frames
nsIReflowCommand* reflowCmd;
rv = NS_NewHTMLReflowCommand(&reflowCmd, this, nsIReflowCommand::ReflowDirty);
if (NS_SUCCEEDED(rv)) {
reflowCmd->SetChildListName(nsLayoutAtoms::fixedList);
aPresShell.AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
return rv;
}
NS_IMETHODIMP
ViewportFrame::RemoveFrame(nsIPresContext& aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame)
{
// We only expect incremental changes for our fixed frames
NS_PRECONDITION(nsLayoutAtoms::fixedList == aListName, "unexpected child list");
PRBool result = mFixedFrames.DestroyFrame(aPresContext, aOldFrame);
NS_ASSERTION(result, "didn't find frame to delete");
// Because fixed frames aren't part of a flow, there's no additional
// work to do, e.g. reflowing sibling frames. And because fixed frames
// have a view, we don't need to repaint
return NS_OK;
}
NS_IMETHODIMP
ViewportFrame::GetAdditionalChildListName(PRInt32 aIndex,
nsIAtom** aListName) const
@ -290,65 +384,35 @@ ViewportFrame::IncrementalReflow(nsIPresContext& aPresContext,
const nsHTMLReflowState& aReflowState)
{
nsIReflowCommand::ReflowType type;
nsIFrame* newFrames;
PRInt32 numFrames;
// Get the type of reflow command
aReflowState.reflowCommand->GetType(type);
// Handle each specific type
if (nsIReflowCommand::FrameAppended == type) {
// Add the frames to our list of fixed position frames
aReflowState.reflowCommand->GetChildFrame(newFrames);
NS_ASSERTION(nsnull != newFrames, "null child list");
numFrames = LengthOf(newFrames);
mFixedFrames.AppendFrames(nsnull, newFrames);
} else if (nsIReflowCommand::FrameRemoved == type) {
// Get the new frame
nsIFrame* childFrame;
aReflowState.reflowCommand->GetChildFrame(childFrame);
PRBool result = mFixedFrames.DestroyFrame(aPresContext, childFrame);
NS_ASSERTION(result, "didn't find frame to delete");
} else if (nsIReflowCommand::FrameInserted == type) {
// Get the previous sibling
nsIFrame* prevSibling;
aReflowState.reflowCommand->GetPrevSiblingFrame(prevSibling);
// Insert the new frames
aReflowState.reflowCommand->GetChildFrame(newFrames);
NS_ASSERTION(nsnull != newFrames, "null child list");
numFrames = LengthOf(newFrames);
mFixedFrames.InsertFrames(nsnull, prevSibling, newFrames);
} else {
NS_ASSERTION(PR_FALSE, "unexpected reflow type");
}
// For inserted and appended reflow commands we need to reflow the
// newly added frames
if ((nsIReflowCommand::FrameAppended == type) ||
(nsIReflowCommand::FrameInserted == type)) {
while (numFrames-- > 0) {
// Calculate how much room is available for the fixed items. That means
// determining if the viewport is scrollable and whether the vertical and/or
// horizontal scrollbars are visible
nscoord width, height;
CalculateFixedContainingBlockSize(aPresContext, aReflowState, width, height);
// Make a copy of the reflow state and change the computed width and height
// to reflect the available space for the fixed items
// XXX Find a cleaner way to do this...
nsHTMLReflowState reflowState(aReflowState);
reflowState.mComputedWidth = width;
reflowState.mComputedHeight = height;
// The only type of reflow command we expect is that we have dirty
// child frames to reflow
NS_ASSERTION(nsIReflowCommand::ReflowDirty, "unexpected reflow type");
// Calculate how much room is available for the fixed items. That means
// determining if the viewport is scrollable and whether the vertical and/or
// horizontal scrollbars are visible
nscoord width, height;
CalculateFixedContainingBlockSize(aPresContext, aReflowState, width, height);
// Make a copy of the reflow state and change the computed width and height
// to reflect the available space for the fixed items
// XXX Find a cleaner way to do this...
nsHTMLReflowState reflowState(aReflowState);
reflowState.mComputedWidth = width;
reflowState.mComputedHeight = height;
// Walk the fixed child frames and reflow the dirty frames
for (nsIFrame* f = mFixedFrames.FirstChild(); f; f->GetNextSibling(&f)) {
nsFrameState frameState;
f->GetFrameState(&frameState);
if (frameState & NS_FRAME_IS_DIRTY) {
nsReflowStatus status;
ReflowFixedFrame(aPresContext, reflowState, newFrames, PR_TRUE, status);
newFrames->GetNextSibling(&newFrames);
ReflowFixedFrame(aPresContext, reflowState, f, PR_TRUE, status);
}
}
@ -379,14 +443,14 @@ ViewportFrame::Reflow(nsIPresContext& aPresContext,
nsIAtom* listName;
PRBool isFixedChild;
// It's targeted at us. It better be for a 'fixed' frame
// reflow command
// It's targeted at us. It better be for the fixed child list
aReflowState.reflowCommand->GetChildListName(listName);
isFixedChild = nsLayoutAtoms::fixedList == listName;
NS_IF_RELEASE(listName);
NS_ASSERTION(isFixedChild, "unexpected child list");
if (isFixedChild) {
// Handle the incremental reflow command
IncrementalReflow(aPresContext, aReflowState);
isHandled = PR_TRUE;
}
@ -407,19 +471,6 @@ ViewportFrame::Reflow(nsIPresContext& aPresContext,
ReflowFixedFrame(aPresContext, aReflowState, nextFrame, PR_FALSE,
kidStatus);
// XXX Make sure the frame is repainted. For the time being, since we
// have no idea what actually changed repaint it all...
nsIView* view;
nextFrame->GetView(&view);
if (nsnull != view) {
nsIViewManager* viewMgr;
view->GetViewManager(viewMgr);
if (nsnull != viewMgr) {
viewMgr->UpdateView(view, (nsIRegion*)nsnull, NS_VMREFRESH_NO_SYNC);
NS_RELEASE(viewMgr);
}
}
} else {
// Reflow our one and only principal child frame
if (mFrames.NotEmpty()) {