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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>
#include <vcl/vclenum.hxx>
#include <o3tl/typed_flags_set.hxx>
class CommandEvent;
namespace vcl {
class Window;
}
// Timerticks
constexpr sal_uInt64 SELENG_DRAGDROP_TIMEOUT = 400;
constexpr sal_uInt64 SELENG_AUTOREPEAT_INTERVAL = 50;
constexpr sal_uInt64 SELENG_AUTOREPEAT_INTERVAL_MIN = 25;
constexpr sal_uInt64 SELENG_AUTOREPEAT_INTERVAL_MAX = 300;
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. true == Ok
virtual void SetCursorAtPoint( const Point& rPointPixel,
bool bDontSelectAtCursor = false ) = 0;
virtual bool IsSelectionAtPoint( const Point& rPointPixel ) = 0;
virtual void DeselectAtPoint( const Point& rPointPixel ) = 0;
// delete anchor & deselect all
virtual void DeselectAll() = 0;
};
enum class SelectionEngineFlags {
DRG_ENAB = 0x0001,
IN_SEL = 0x0002,
IN_ADD = 0x0004,
ADD_ALW = 0x0008,
HAS_ANCH = 0x0020,
CMDEVT = 0x0040,
WAIT_UPEVT = 0x0080,
EXPANDONMOVE = 0x0100,
};
namespace o3tl
{
template<> struct typed_flags<SelectionEngineFlags> : is_typed_flags<SelectionEngineFlags, 0x01ef> {};
}
class VCL_DLLPUBLIC SelectionEngine
{
private:
FunctionSet* pFunctionSet;
VclPtr<vcl::Window> pWin;
tools::Rectangle aArea;
Timer aWTimer; // generate fake mouse moves
MouseEvent aLastMove;
SelectionMode eSelMode;
sal_uInt64 nUpdateInterval;
sal_uInt16 nLockedMods;
SelectionEngineFlags nFlags;
DECL_DLLPRIVATE_LINK( ImpWatchDog, Timer*, void );
inline bool ShouldDeselect( bool bModifierKey1 ) const;
// determines to deselect or not when Ctrl-key is pressed on CursorPosChanging
public:
SelectionEngine( vcl::Window* pWindow,
FunctionSet* pFunctions = nullptr );
~SelectionEngine();
// Avoid implicitly defined copy constructors/assignments for the
// DLLPUBLIC class (they may require forward-declared classes used
// internally to be defined in places using SelectionEngine)
SelectionEngine(const SelectionEngine&) = delete;
SelectionEngine(SelectionEngine&&) = delete;
SelectionEngine& operator=(const SelectionEngine&) = delete;
SelectionEngine& operator=(SelectionEngine&&) = delete;
// true: Event was processed by Selection Engine
bool SelMouseButtonDown( const MouseEvent& rMEvt );
bool SelMouseButtonUp( const MouseEvent& rMEvt );
bool SelMouseMove( const MouseEvent& rMEvt );
//SelMouseButtonDown captures mouse events, SelMouseButtonUp
//releases the capture. If you need to release the mouse
//capture after SelMouseButtonDown but before
//SelMouseButtonUp, e.g. to allow events to go to a
//context menu via "Command" which is delivered after
//mouse down but before mouse up, then use this
void ReleaseMouse();
void CaptureMouse();
// 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 tools::Rectangle& rNewArea )
{ aArea = rNewArea; }
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( vcl::Window*);
vcl::Window* GetWindow() const { return pWin; }
void LockModifiers( sal_uInt16 nModifiers )
{ nLockedMods = nModifiers; }
sal_uInt16 GetLockedModifiers() const { return nLockedMods; }
bool IsInSelection() const;
void Reset();
bool Command(const CommandEvent& rCEvt);
bool HasAnchor() const;
void SetAnchor( bool bAnchor );
void SetUpdateInterval( sal_uInt64 nInterval );
// is switched on in the Ctor
void ExpandSelectionOnMouseMove( bool bExpand = true )
{
if( bExpand )
nFlags |= SelectionEngineFlags::EXPANDONMOVE;
else
nFlags &= ~SelectionEngineFlags::EXPANDONMOVE;
}
};
inline bool SelectionEngine::IsAddMode() const
{
if ( nFlags & (SelectionEngineFlags::IN_ADD | SelectionEngineFlags::ADD_ALW) )
return true;
else
return false;
}
inline void SelectionEngine::SetAddMode( bool bNewMode )
{
if ( bNewMode )
nFlags |= SelectionEngineFlags::IN_ADD;
else
nFlags &= ~SelectionEngineFlags::IN_ADD;
}
inline void SelectionEngine::EnableDrag( bool bOn )
{
if ( bOn )
nFlags |= SelectionEngineFlags::DRG_ENAB;
else
nFlags &= ~SelectionEngineFlags::DRG_ENAB;
}
inline void SelectionEngine::AddAlways( bool bOn )
{
if( bOn )
nFlags |= SelectionEngineFlags::ADD_ALW;
else
nFlags &= ~SelectionEngineFlags::ADD_ALW;
}
inline bool SelectionEngine::IsAlwaysAdding() const
{
if ( nFlags & SelectionEngineFlags::ADD_ALW )
return true;
else
return false;
}
inline bool SelectionEngine::IsInSelection() const
{
if ( nFlags & SelectionEngineFlags::IN_SEL )
return true;
else
return false;
}
inline bool SelectionEngine::HasAnchor() const
{
if ( nFlags & SelectionEngineFlags::HAS_ANCH )
return true;
else
return false;
}
inline void SelectionEngine::SetAnchor( bool bAnchor )
{
if ( bAnchor )
nFlags |= SelectionEngineFlags::HAS_ANCH;
else
nFlags &= ~SelectionEngineFlags::HAS_ANCH;
}
#endif // INCLUDED_VCL_SELENG_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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