forked from mirrors/gecko-dev
197 lines
7.6 KiB
C++
197 lines
7.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* vim: set ts=2 sw=2 et tw=78:
|
|
*
|
|
* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/* the caret is the text cursor used, e.g., when editing */
|
|
|
|
#include "nsCoord.h"
|
|
#include "nsISelectionListener.h"
|
|
#include "nsIRenderingContext.h"
|
|
#include "nsITimer.h"
|
|
#include "nsICaret.h"
|
|
#include "nsWeakPtr.h"
|
|
|
|
class nsIView;
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class nsCaret : public nsICaret,
|
|
public nsISelectionListener
|
|
{
|
|
public:
|
|
|
|
nsCaret();
|
|
virtual ~nsCaret();
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
public:
|
|
|
|
// nsICaret interface
|
|
NS_IMETHOD Init(nsIPresShell *inPresShell);
|
|
NS_IMETHOD Terminate();
|
|
|
|
NS_IMETHOD GetCaretDOMSelection(nsISelection **outDOMSel);
|
|
NS_IMETHOD SetCaretDOMSelection(nsISelection *inDOMSel);
|
|
NS_IMETHOD GetCaretVisible(PRBool *outMakeVisible);
|
|
NS_IMETHOD SetCaretVisible(PRBool intMakeVisible);
|
|
NS_IMETHOD SetCaretReadOnly(PRBool inMakeReadonly);
|
|
virtual PRBool GetCaretReadOnly()
|
|
{
|
|
return mReadOnly;
|
|
}
|
|
NS_IMETHOD GetCaretCoordinates(EViewCoordinates aRelativeToType,
|
|
nsISelection *inDOMSel,
|
|
nsRect* outCoordinates,
|
|
PRBool* outIsCollapsed,
|
|
nsIView **outView);
|
|
NS_IMETHOD EraseCaret();
|
|
|
|
NS_IMETHOD SetVisibilityDuringSelection(PRBool aVisibility);
|
|
NS_IMETHOD DrawAtPosition(nsIDOMNode* aNode, PRInt32 aOffset);
|
|
nsIFrame* GetCaretFrame();
|
|
nsRect GetCaretRect()
|
|
{
|
|
nsRect r;
|
|
r.UnionRect(mCaretRect, GetHookRect());
|
|
return r;
|
|
}
|
|
nsIContent* GetCaretContent()
|
|
{
|
|
if (mDrawn)
|
|
return mLastContent;
|
|
|
|
return nsnull;
|
|
}
|
|
|
|
void InvalidateOutsideCaret();
|
|
void UpdateCaretPosition();
|
|
|
|
void PaintCaret(nsDisplayListBuilder *aBuilder,
|
|
nsIRenderingContext *aCtx,
|
|
const nsPoint &aOffset,
|
|
nscolor aColor);
|
|
|
|
void SetIgnoreUserModify(PRBool aIgnoreUserModify);
|
|
|
|
//nsISelectionListener interface
|
|
NS_DECL_NSISELECTIONLISTENER
|
|
|
|
static void CaretBlinkCallback(nsITimer *aTimer, void *aClosure);
|
|
|
|
NS_IMETHOD GetCaretFrameForNodeOffset(nsIContent* aContentNode,
|
|
PRInt32 aOffset,
|
|
nsFrameSelection::HINT aFrameHint,
|
|
PRUint8 aBidiLevel,
|
|
nsIFrame** aReturnFrame,
|
|
PRInt32* aReturnOffset);
|
|
protected:
|
|
|
|
void KillTimer();
|
|
nsresult PrimeTimer();
|
|
|
|
nsresult StartBlinking();
|
|
nsresult StopBlinking();
|
|
|
|
void GetViewForRendering(nsIFrame *caretFrame,
|
|
EViewCoordinates coordType,
|
|
nsPoint &viewOffset,
|
|
nsIView **outRenderingView,
|
|
nsIView **outRelativeView);
|
|
PRBool DrawAtPositionWithHint(nsIDOMNode* aNode,
|
|
PRInt32 aOffset,
|
|
nsFrameSelection::HINT aFrameHint,
|
|
PRUint8 aBidiLevel,
|
|
PRBool aInvalidate);
|
|
PRBool MustDrawCaret();
|
|
void DrawCaret(PRBool aInvalidate);
|
|
void DrawCaretAfterBriefDelay();
|
|
nsresult UpdateCaretRects(nsIFrame* aFrame, PRInt32 aFrameOffset);
|
|
nsresult UpdateHookRect(nsPresContext* aPresContext);
|
|
static void InvalidateRects(const nsRect &aRect, const nsRect &aHook,
|
|
nsIFrame *aFrame);
|
|
nsRect GetHookRect()
|
|
{
|
|
#ifdef IBMBIDI
|
|
return mHookRect;
|
|
#else
|
|
return nsRect();
|
|
#endif
|
|
}
|
|
void ToggleDrawnStatus() { mDrawn = !mDrawn; }
|
|
|
|
already_AddRefed<nsFrameSelection> GetFrameSelection();
|
|
|
|
protected:
|
|
|
|
nsWeakPtr mPresShell;
|
|
nsWeakPtr mDomSelectionWeak;
|
|
|
|
nsCOMPtr<nsITimer> mBlinkTimer;
|
|
nsCOMPtr<nsIRenderingContext> mRendContext;
|
|
|
|
PRUint32 mBlinkRate; // time for one cyle (off then on), in milliseconds
|
|
|
|
nscoord mCaretWidth; // caret width. this gets calculated laziiy
|
|
nscoord mBidiIndicatorSize; // width and height of bidi indicator
|
|
|
|
PRPackedBool mVisible; // is the caret blinking
|
|
PRPackedBool mDrawn; // this should be mutable
|
|
PRPackedBool mReadOnly; // it the caret in readonly state (draws differently)
|
|
PRPackedBool mShowDuringSelection; // show when text is selected
|
|
|
|
nsRect mCaretRect; // the last caret rect, in the coodinates of the last frame.
|
|
|
|
nsCOMPtr<nsIContent> mLastContent; // store the content the caret was last requested to be drawn
|
|
// in (by DrawAtPosition()/DrawCaret()),
|
|
// note that this can be different than where it was
|
|
// actually drawn (anon <BR> in text control)
|
|
PRInt32 mLastContentOffset; // the offset for the last request
|
|
|
|
nsFrameSelection::HINT mLastHint; // the hint associated with the last request, see also
|
|
// mLastBidiLevel below
|
|
|
|
PRPackedBool mIgnoreUserModify;
|
|
|
|
#ifdef IBMBIDI
|
|
nsRect mHookRect; // directional hook on the caret
|
|
PRUint8 mLastBidiLevel; // saved bidi level of the last draw request, to use when we erase
|
|
PRPackedBool mKeyboardRTL; // is the keyboard language right-to-left
|
|
#endif
|
|
};
|
|
|