ctrl_generic.hpp
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上传日期:2020-07-06
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文件大小:5k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * ctrl_generic.hpp
- *****************************************************************************
- * Copyright (C) 2003 the VideoLAN team
- * $Id: d0ed05da85ca8ef0f68bfd1e4ff842f530b63ca2 $
- *
- * Authors: Cyril Deguet <asmax@via.ecp.fr>
- * Olivier Teulière <ipkiss@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifndef CTRL_GENERIC_HPP
- #define CTRL_GENERIC_HPP
- #include "../src/skin_common.hpp"
- #include "../utils/pointer.hpp"
- #include "../utils/ustring.hpp"
- #include "../utils/observer.hpp"
- #include "../commands/cmd_generic.hpp"
- class Box;
- class EvtGeneric;
- class OSGraphics;
- class GenericLayout;
- class Position;
- class TopWindow;
- class VarBool;
- /// Base class for controls
- class CtrlGeneric: public SkinObject, public Observer<VarBool>
- {
- public:
- virtual ~CtrlGeneric();
- /// Handle an event on the control
- virtual void handleEvent( EvtGeneric &rEvent ) {}
- /// Check whether coordinates are inside the control
- virtual bool mouseOver( int x, int y ) const { return false; }
- /// Draw the control on the given graphics
- virtual void draw( OSGraphics &rImage, int xDest, int yDest ) {}
- /// Set the position and the associated layout of the control
- virtual void setLayout( GenericLayout *pLayout,
- const Position &rPosition );
- /// Get the position of the control in the layout, if any
- virtual const Position *getPosition() const { return m_pPosition; }
- /// Get the text of the tooltip
- virtual UString getTooltipText() const
- { return UString( getIntf(), "" ); }
- /**
- * Overload this method if you want to do something special when
- * the layout is resized
- */
- virtual void onResize() {}
- /// Get the help text
- virtual const UString &getHelpText() const { return m_help; }
- /// Return true if the control can gain the focus
- virtual bool isFocusable() const { return false; }
- /// Return true if the control is visible
- virtual bool isVisible() const;
- /// Get the type of control (custom RTTI)
- virtual string getType() const { return ""; }
- protected:
- // If pVisible is NULL, the control is always visible
- CtrlGeneric( intf_thread_t *pIntf, const UString &rHelp,
- VarBool *pVisible = NULL );
- /**
- * Tell the layout when the image has changed, with the size of the
- * rectangle to repaint and its offset.
- * Use the default values to repaint the whole window
- */
- virtual void notifyLayout( int witdh = -1, int height = -1,
- int xOffSet = 0, int yOffSet = 0 ) const;
- /**
- * Same as notifyLayout(), but takes optional images as parameters.
- * The maximum size(s) of the images will be used for repainting.
- */
- void notifyLayoutMaxSize( const Box *pImg1 = NULL,
- const Box *pImg2 = NULL );
- /// Ask the layout to capture the mouse
- virtual void captureMouse() const;
- /// Ask the layout to release the mouse
- virtual void releaseMouse() const;
- /// Notify the window the tooltip has changed
- virtual void notifyTooltipChange() const;
- /// Get the associated window, if any
- virtual TopWindow *getWindow() const;
- /**
- * Overload this method if you want to do something special when
- * the Position object is set
- */
- virtual void onPositionChange() {}
- /// Overload this method to get notified of bool variable changes
- virtual void onVarBoolUpdate( VarBool &rVar ) {}
- /// Method called when an observed bool variable is changed
- virtual void onUpdate( Subject<VarBool> &rVariable , void* );
- /// Associated layout
- GenericLayout *m_pLayout;
- /// Visibility variable
- VarBool *m_pVisible;
- private:
- /// Position in the layout
- Position *m_pPosition;
- /// Help text
- UString m_help;
- };
- typedef CountedPtr<CtrlGeneric> CtrlGenericPtr;
- #endif