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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_CTRL_HXX
#define INCLUDED_VCL_CTRL_HXX
#include <tools/link.hxx>
#include <tools/solar.h>
#include <vcl/dllapi.h>
#include <vcl/window.hxx>
#include <vcl/salnativewidgets.hxx>
// forward
namespace vcl { struct ImplControlData; struct ControlLayoutData; }
class StyleSettings;
// - Control -
class VCL_DLLPUBLIC Control : public vcl::Window
{
protected:
vcl::ImplControlData* mpControlData;
private:
bool mbHasControlFocus;
bool mbShowAccelerator;
Link<> maGetFocusHdl;
Link<> maLoseFocusHdl;
SAL_DLLPRIVATE void ImplInitControlData();
Control (const Control &) SAL_DELETED_FUNCTION;
Control & operator= (const Control &) SAL_DELETED_FUNCTION;
protected:
Control( WindowType nType );
virtual void FillLayoutData() const;
// helper method for composite controls
void AppendLayoutData( const Control& rSubControl ) const;
/// creates the mpData->mpLayoutData structure
void CreateLayoutData() const;
/// determines whether we currently have layout data
bool HasLayoutData() const;
/** this calls both our event listeners, and a specified handler
If the Control instance is destroyed during any of those calls, the
method properly handles this (in particular, it doesn't crash :)
@param nEvent
the event to notify to our event listeners
@param rHandler
the handler to call
@param pCaller
the parameter to pass to the handler call
@return
if the Control instance has been destroyed in any of the call
*/
bool ImplCallEventListenersAndHandler(
sal_uLong nEvent, const Link<>& rHandler, void* pCaller
);
/** draws the given text onto the given device
If no reference device is set, the draw request will simply be forwarded to OutputDevice::DrawText. Otherwise,
the text will be rendered according to the metrics at the reference device.
Note that the given rectangle might be modified, it will contain the result of a GetTextRect call (either
directly at the target device, or taking the reference device into account) when returning.
*/
void DrawControlText( OutputDevice& _rTargetDevice, Rectangle& _io_rRect,
const OUString& _rStr, DrawTextFlags _nStyle,
MetricVector* _pVector, OUString* _pDisplayText ) const;
virtual const vcl::Font&
GetCanonicalFont( const StyleSettings& _rStyle ) const;
virtual const Color&
GetCanonicalTextColor( const StyleSettings& _rStyle ) const;
void ImplInitSettings( const bool _bFont, const bool _bForeground );
virtual void ApplySettings(vcl::RenderContext& rRenderContext) SAL_OVERRIDE;
public:
SAL_DLLPRIVATE void ImplClearLayoutData() const;
/** draws a frame around the give rectangle, onto the given device
only to be used from within the Window::Draw method of your sub class.
The frame is always drawn with a single line (without 3D effects). In addition, any mono
color set at the control's settings is respected. Yet more additionally, if we're living
in a themed desktop, this theming is ignored.
Note that this makes sense, since the *only known* clients of Window::Draw
are form controls, when printed or print-previewed. For form controls embedded in office documents,
you don't want to have the theme look.
@param pDev
the device to draw onto
@param rRect
the rect for drawing the frame. Upon returning from the call, the rect will be inflated
by the space occupied by the drawn pixels.
*/
SAL_DLLPRIVATE void ImplDrawFrame( OutputDevice* pDev, Rectangle& rRect );
public:
explicit Control( vcl::Window* pParent, WinBits nWinStyle = 0 );
explicit Control( vcl::Window* pParent, const ResId& );
virtual ~Control();
virtual void dispose() SAL_OVERRIDE;
virtual void EnableRTL ( bool bEnable = true ) SAL_OVERRIDE;
virtual void GetFocus() SAL_OVERRIDE;
virtual void LoseFocus() SAL_OVERRIDE;
virtual bool Notify( NotifyEvent& rNEvt ) SAL_OVERRIDE;
virtual void StateChanged( StateChangedType nStateChange ) SAL_OVERRIDE;
virtual void Resize() SAL_OVERRIDE;
// invalidates layout data
virtual void SetText( const OUString& rStr ) SAL_OVERRIDE;
// gets the displayed text
virtual OUString GetDisplayText() const SAL_OVERRIDE;
// returns the bounding box for the character at index nIndex (in control coordinates)
Rectangle GetCharacterBounds( long nIndex ) const;
// returns the character index for corresponding to rPoint (in control coordinates)
// -1 is returned if no character is at that point
long GetIndexForPoint( const Point& rPoint ) const;
// returns the interval [start,end] of line nLine
// returns [-1,-1] for an invalid line
Pair GetLineStartEnd( long nLine ) const;
/** ToRelativeLineIndex changes a layout data index to a count relative to its line.
This is equivalent to getting the line start/end pairs with
GetLineStartEnd() until the index lies within [start,end] of a line
@param nIndex
the absolute index inside the display text to be changed to a relative index
@returns
the relative index inside the displayed line or -1 if the absolute index does
not match any line
*/
long ToRelativeLineIndex( long nIndex ) const;
void SetGetFocusHdl( const Link<>& rLink ) { maGetFocusHdl = rLink; }
void SetLoseFocusHdl( const Link<>& rLink ) { maLoseFocusHdl = rLink; }
const Link<>& GetLoseFocusHdl() const { return maLoseFocusHdl; }
/** determines whether the control currently has the focus
*/
bool HasControlFocus() const { return mbHasControlFocus; }
void SetLayoutDataParent( const Control* pParent ) const;
virtual Size GetOptimalSize() const SAL_OVERRIDE;
/** sets a reference device used for rendering control text
@see DrawControlText
*/
void SetReferenceDevice( OutputDevice* _referenceDevice );
OutputDevice* GetReferenceDevice() const;
vcl::Font GetUnzoomedControlPointFont() const;
void SetShowAccelerator (bool val);
};
#endif // INCLUDED_VCL_CTRL_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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