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WIP to get caret position in window coordinates for IME

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git-svn-id: svn://10.0.0.236/trunk@29534 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
sfraser%netscape.com 1999-04-27 21:59:18 +00:00
parent 51c4a2545c
commit 67ddcd0311
6 changed files with 156 additions and 4 deletions
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68
mozilla/layout/base/nsCaret.cpp
View File

@ -170,6 +170,72 @@ NS_IMETHODIMP nsCaret::Refresh(nsIView *aView, nsIRenderingContext& inRendContex
}
//-----------------------------------------------------------------------------
NS_IMETHODIMP nsCaret::GetWindowRelativeCoordinates(nsPoint& outCoordinates, PRBool& outIsCollapsed)
{
if (!mPresShell)
return NS_ERROR_NOT_INITIALIZED;
nsCOMPtr<nsIDOMSelection> domSelection;
nsresult err = mPresShell->GetSelection(getter_AddRefs(domSelection));
if (NS_FAILED(err))
return err;
if (!domSelection)
return NS_ERROR_NOT_INITIALIZED; // no selection
// fill in defaults for failure
outCoordinates.x = -1;
outCoordinates.y = -1;
outIsCollapsed = PR_FALSE;
err = domSelection->GetIsCollapsed(&outIsCollapsed);
if (NS_FAILED(err))
return err;
#if 0
// code in progress
nsCOMPtr<nsIDOMNode> focusNode;
PRInt32 focusOffset;
if (NS_SUCCEEDED(domSelection->GetFocusNode(getter_AddRefs(focusNode))) && focusNode &&
NS_SUCCEEDED(domSelection->GetFocusOffset(&focusOffset)))
{
// is this a text node?
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(focusNode);
// note that we only work with text nodes here, unlike when drawing the caret.
// this is because this routine is intended for IME support, which only cares about text.
if (nodeAsText)
{
nsCOMPtr<nsIContent>contentNode = do_QueryInterface(focusNode);
if (contentNode)
{
nsIFrame* theFrame = nsnull;
PRInt32 contentOffset = focusOffset;
if (NS_SUCCEEDED(mPresShell->GetPrimaryFrameFor(contentNode, &theFrame)) &&
theFrame && NS_SUCCEEDED(theFrame->GetChildFrameContainingOffset(focusOffset, &focusOffset, &theFrame)))
{
nsCOMPtr<nsIPresContext> presContext;
if (NS_SUCCEEDED(mPresShell->GetPresContext(getter_AddRefs(presContext))))
{
nsPoint framePos(0, 0);
theFrame->GetPointFromOffset(presContext, &inRendContext, mLastContentOffset, &framePos);
frameRect += framePos;
}
}
}
}
}
#endif
return NS_ERROR_NOT_IMPLEMENTED;
}
//-----------------------------------------------------------------------------
NS_IMETHODIMP nsCaret::ClearFrameRefs(nsIFrame* aFrame)
{
@ -275,7 +341,7 @@ nsresult nsCaret::StopBlinking()
//-----------------------------------------------------------------------------
// Get the nsIFrame and the content offset for the current caret position.
// Returns PR_TRUE if we should go ahead and draw, PR_FALSE otherwise.
// Returns PR_TRUE if we should go ahead and draw, PR_FALSE otherwise.
//
PRBool nsCaret::SetupDrawingFrameAndOffset()
{

1
mozilla/layout/base/nsCaret.h
View File

@ -51,6 +51,7 @@ class nsCaret : public nsICaret,
NS_IMETHOD SetCaretVisible(PRBool inMakeVisible);
NS_IMETHOD SetCaretReadOnly(PRBool inMakeReadonly);
NS_IMETHOD Refresh(nsIView *aView, nsIRenderingContext& inRendContext, const nsRect& aDirtyRect);
NS_IMETHOD GetWindowRelativeCoordinates(nsPoint& outCoordinates, PRBool& outIsCollapsed);
NS_IMETHOD ClearFrameRefs(nsIFrame* aFrame);
//nsIDOMSelectionListener interface

11
mozilla/layout/base/nsICaret.h
View File

@ -45,7 +45,16 @@ public:
/** Refresh
* Refresh the caret after the frame it is being drawn in has painted
*/
NS_IMETHOD Refresh(nsIView *aView, nsIRenderingContext& inRendContext, const nsRect& aDirtyRect) = 0;
NS_IMETHOD Refresh(nsIView *aView, nsIRenderingContext& inRendContext, const nsRect& aDirtyRect) = 0;
/** GetWindowRelativeCoordinates
* Get the position of the caret in (top-level) window coordinates.
* If the selection is collapsed, this returns the caret location
* and true in outIsCollapsed.
* If the selection is not collapsed, this returns the location of the focus pos,
* and false in outIsCollapsed.
*/
NS_IMETHOD GetWindowRelativeCoordinates(nsPoint& outCoordinates, PRBool& outIsCollapsed) = 0;
/** ClearFrameRefs
* The caret stores a reference to the frame that the caret was last drawn in.

11
mozilla/layout/base/public/nsICaret.h
View File

@ -45,7 +45,16 @@ public:
/** Refresh
* Refresh the caret after the frame it is being drawn in has painted
*/
NS_IMETHOD Refresh(nsIView *aView, nsIRenderingContext& inRendContext, const nsRect& aDirtyRect) = 0;
NS_IMETHOD Refresh(nsIView *aView, nsIRenderingContext& inRendContext, const nsRect& aDirtyRect) = 0;
/** GetWindowRelativeCoordinates
* Get the position of the caret in (top-level) window coordinates.
* If the selection is collapsed, this returns the caret location
* and true in outIsCollapsed.
* If the selection is not collapsed, this returns the location of the focus pos,
* and false in outIsCollapsed.
*/
NS_IMETHOD GetWindowRelativeCoordinates(nsPoint& outCoordinates, PRBool& outIsCollapsed) = 0;
/** ClearFrameRefs
* The caret stores a reference to the frame that the caret was last drawn in.

68
mozilla/layout/base/src/nsCaret.cpp
View File

@ -170,6 +170,72 @@ NS_IMETHODIMP nsCaret::Refresh(nsIView *aView, nsIRenderingContext& inRendContex
}
//-----------------------------------------------------------------------------
NS_IMETHODIMP nsCaret::GetWindowRelativeCoordinates(nsPoint& outCoordinates, PRBool& outIsCollapsed)
{
if (!mPresShell)
return NS_ERROR_NOT_INITIALIZED;
nsCOMPtr<nsIDOMSelection> domSelection;
nsresult err = mPresShell->GetSelection(getter_AddRefs(domSelection));
if (NS_FAILED(err))
return err;
if (!domSelection)
return NS_ERROR_NOT_INITIALIZED; // no selection
// fill in defaults for failure
outCoordinates.x = -1;
outCoordinates.y = -1;
outIsCollapsed = PR_FALSE;
err = domSelection->GetIsCollapsed(&outIsCollapsed);
if (NS_FAILED(err))
return err;
#if 0
// code in progress
nsCOMPtr<nsIDOMNode> focusNode;
PRInt32 focusOffset;
if (NS_SUCCEEDED(domSelection->GetFocusNode(getter_AddRefs(focusNode))) && focusNode &&
NS_SUCCEEDED(domSelection->GetFocusOffset(&focusOffset)))
{
// is this a text node?
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(focusNode);
// note that we only work with text nodes here, unlike when drawing the caret.
// this is because this routine is intended for IME support, which only cares about text.
if (nodeAsText)
{
nsCOMPtr<nsIContent>contentNode = do_QueryInterface(focusNode);
if (contentNode)
{
nsIFrame* theFrame = nsnull;
PRInt32 contentOffset = focusOffset;
if (NS_SUCCEEDED(mPresShell->GetPrimaryFrameFor(contentNode, &theFrame)) &&
theFrame && NS_SUCCEEDED(theFrame->GetChildFrameContainingOffset(focusOffset, &focusOffset, &theFrame)))
{
nsCOMPtr<nsIPresContext> presContext;
if (NS_SUCCEEDED(mPresShell->GetPresContext(getter_AddRefs(presContext))))
{
nsPoint framePos(0, 0);
theFrame->GetPointFromOffset(presContext, &inRendContext, mLastContentOffset, &framePos);
frameRect += framePos;
}
}
}
}
}
#endif
return NS_ERROR_NOT_IMPLEMENTED;
}
//-----------------------------------------------------------------------------
NS_IMETHODIMP nsCaret::ClearFrameRefs(nsIFrame* aFrame)
{
@ -275,7 +341,7 @@ nsresult nsCaret::StopBlinking()
//-----------------------------------------------------------------------------
// Get the nsIFrame and the content offset for the current caret position.
// Returns PR_TRUE if we should go ahead and draw, PR_FALSE otherwise.
// Returns PR_TRUE if we should go ahead and draw, PR_FALSE otherwise.
//
PRBool nsCaret::SetupDrawingFrameAndOffset()
{

1
mozilla/layout/base/src/nsCaret.h
View File

@ -51,6 +51,7 @@ class nsCaret : public nsICaret,
NS_IMETHOD SetCaretVisible(PRBool inMakeVisible);
NS_IMETHOD SetCaretReadOnly(PRBool inMakeReadonly);
NS_IMETHOD Refresh(nsIView *aView, nsIRenderingContext& inRendContext, const nsRect& aDirtyRect);
NS_IMETHOD GetWindowRelativeCoordinates(nsPoint& outCoordinates, PRBool& outIsCollapsed);
NS_IMETHOD ClearFrameRefs(nsIFrame* aFrame);
//nsIDOMSelectionListener interface