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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_VCL_SELENG_HXX
#define INCLUDED_VCL_SELENG_HXX
#include <vcl/dllapi.h>
#include <vcl/timer.hxx>
#include <vcl/event.hxx>
class Window;
class CommandEvent;
// Timerticks
#define SELENG_DRAGDROP_TIMEOUT 400
#define SELENG_AUTOREPEAT_INTERVAL 50
#define SELENG_AUTOREPEAT_INTERVAL_MIN 25
#define SELENG_AUTOREPEAT_INTERVAL_MAX 300
enum SelectionMode { NO_SELECTION, SINGLE_SELECTION, RANGE_SELECTION, MULTIPLE_SELECTION };
// ---------------
// - FunctionSet -
// ---------------
class VCL_DLLPUBLIC FunctionSet
{
public:
virtual ~FunctionSet() = 0;
virtual void BeginDrag() = 0;
virtual void CreateAnchor() = 0; // Anker-Pos := Cursor-Pos
virtual void DestroyAnchor() = 0;
// move cursor, at the same time match cursor position to the selection
// starting at anchor. sal_True == Ok
virtual bool SetCursorAtPoint( const Point& rPointPixel,
sal_Bool bDontSelectAtCursor = sal_False ) = 0;
virtual bool IsSelectionAtPoint( const Point& rPointPixel ) = 0;
virtual void DeselectAtPoint( const Point& rPointPixel ) = 0;
// delete anchor & deselect all
virtual void DeselectAll() = 0;
};
// -------------------
// - SelectionEngine -
// -------------------
#define SELENG_DRG_ENAB 0x0001
#define SELENG_IN_SEL 0x0002
#define SELENG_IN_ADD 0x0004
#define SELENG_ADD_ALW 0x0008
#define SELENG_HAS_ANCH 0x0020
#define SELENG_CMDEVT 0x0040
#define SELENG_WAIT_UPEVT 0x0080
#define SELENG_EXPANDONMOVE 0x0100
class VCL_DLLPUBLIC SelectionEngine
{
private:
FunctionSet* pFunctionSet;
Window* pWin;
Rectangle aArea;
Timer aWTimer; // generate fake mouse moves
MouseEvent aLastMove;
SelectionMode eSelMode;
sal_uLong nUpdateInterval;
sal_uInt16 nLockedMods;
sal_uInt16 nFlags;
DECL_DLLPRIVATE_LINK( ImpWatchDog, void* );
inline bool ShouldDeselect( bool bModifierKey1 ) const;
// determines to deselect or not when Ctrl-key is pressed on CursorPosChanging
public:
SelectionEngine( Window* pWindow,
FunctionSet* pFunctions = NULL,
sal_uLong nAutoRepeatInterval = SELENG_AUTOREPEAT_INTERVAL );
~SelectionEngine();
// sal_True: Event was processed by Selection Engine
bool SelMouseButtonDown( const MouseEvent& rMEvt );
bool SelMouseButtonUp( const MouseEvent& rMEvt );
bool SelMouseMove( const MouseEvent& rMEvt );
// Keyboard
void CursorPosChanging( bool bShift, bool bMod1 );
// is needed to generate a Move event via a Timer
// when the mouse is outside the area
void SetVisibleArea( const Rectangle rNewArea )
{ aArea = rNewArea; }
const Rectangle& GetVisibleArea() const { return aArea; }
void SetAddMode( bool);
bool IsAddMode() const;
void AddAlways( bool bOn );
bool IsAlwaysAdding() const;
void EnableDrag( bool bOn );
void SetSelectionMode( SelectionMode eMode );
SelectionMode GetSelectionMode() const { return eSelMode; }
void SetFunctionSet( FunctionSet* pFuncs )
{ pFunctionSet = pFuncs; }
const FunctionSet* GetFunctionSet() const { return pFunctionSet; }
const Point& GetMousePosPixel() const
{ return aLastMove.GetPosPixel(); }
const MouseEvent& GetMouseEvent() const { return aLastMove; }
void SetWindow( Window*);
Window* GetWindow() const { return pWin; }
void LockModifiers( sal_uInt16 nModifiers )
{ nLockedMods = nModifiers; }
sal_uInt16 GetLockedModifiers() const { return nLockedMods; }
bool IsInSelection() const;
void Reset();
void Command( const CommandEvent& rCEvt );
bool HasAnchor() const;
void SetAnchor( bool bAnchor );
void SetUpdateInterval( sal_uLong nInterval );
// wird im Ctor eingeschaltet
void ExpandSelectionOnMouseMove( bool bExpand = true )
{
if( bExpand )
nFlags |= SELENG_EXPANDONMOVE;
else
nFlags &= ~SELENG_EXPANDONMOVE;
}
};
inline bool SelectionEngine::IsAddMode() const
{
if ( nFlags & (SELENG_IN_ADD | SELENG_ADD_ALW) )
return true;
else
return false;
}
inline void SelectionEngine::SetAddMode( bool bNewMode )
{
if ( bNewMode )
nFlags |= SELENG_IN_ADD;
else
nFlags &= (~SELENG_IN_ADD);
}
inline void SelectionEngine::EnableDrag( bool bOn )
{
if ( bOn )
nFlags |= SELENG_DRG_ENAB;
else
nFlags &= (~SELENG_DRG_ENAB);
}
inline void SelectionEngine::AddAlways( bool bOn )
{
if( bOn )
nFlags |= SELENG_ADD_ALW;
else
nFlags &= (~SELENG_ADD_ALW);
}
inline bool SelectionEngine::IsAlwaysAdding() const
{
if ( nFlags & SELENG_ADD_ALW )
return true;
else
return false;
}
inline bool SelectionEngine::IsInSelection() const
{
if ( nFlags & SELENG_IN_SEL )
return true;
else
return false;
}
inline bool SelectionEngine::HasAnchor() const
{
if ( nFlags & SELENG_HAS_ANCH )
return true;
else
return false;
}
inline void SelectionEngine::SetAnchor( bool bAnchor )
{
if ( bAnchor )
nFlags |= SELENG_HAS_ANCH;
else
nFlags &= (~SELENG_HAS_ANCH);
}
#endif // INCLUDED_VCL_SELENG_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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