generic_window.hpp

来自「VLC媒体播放程序」· HPP 代码 · 共 173 行

/*****************************************************************************
 * generic_window.hpp
 *****************************************************************************
 * Copyright (C) 2003 VideoLAN
 * $Id: generic_window.hpp,v 1.2 2004/01/18 19:54:46 asmax Exp $
 *
 * Authors: Cyril Deguet     <[e-mail]>
 *          Olivier Teuli鑢e <[e-mail]>
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

#ifndef GENERIC_WINDOW_HPP
#define GENERIC_WINDOW_HPP

#include "skin_common.hpp"
#include "../utils/pointer.hpp"
#include "../utils/var_bool.hpp"
#include <list>

class Anchor;
class OSWindow;
class OSGraphics;
class GenericLayout;
class Tooltip;
class CtrlGeneric;
class EvtGeneric;
class EvtFocus;
class EvtLeave;
class EvtMotion;
class EvtMouse;
class EvtKey;
class EvtRefresh;
class EvtScroll;
class GenericFont;
class WindowManager;


/// Generic window class
class GenericWindow: public SkinObject, public Observer<VarBool>
{
    public:
        GenericWindow( intf_thread_t *pIntf, int xPos, int yPos,
                       WindowManager &rWindowManager,
                       const GenericFont &rTipFont,
                       bool dragDrop, bool playOnDrop );
        virtual ~GenericWindow();

        /// Methods to process OS events.
        virtual void processEvent( EvtFocus &rEvtFocus );
        virtual void processEvent( EvtMotion &rEvtMotion );
        virtual void processEvent( EvtMouse &rEvtMouse );
        virtual void processEvent( EvtLeave &rEvtLeave );
        virtual void processEvent( EvtKey &rEvtKey );
        virtual void processEvent( EvtRefresh &rEvtRefresh );
        virtual void processEvent( EvtScroll &rEvtScroll );

        /// Forward an event to a control
        virtual void forwardEvent( EvtGeneric &rEvt, CtrlGeneric &rCtrl );

        // Show the window
        virtual void show();

        // Hide the window
        virtual void hide();

        // Refresh an area of the window
        virtual void refresh( int left, int top, int width, int height );

        /// Move the window
        virtual void move( int left, int top );

        /// Resize the window
        virtual void resize( int width, int height );

        /// Bring the window on top
        virtual void raise();

        /// Set the opacity of the window (0 = transparent, 255 = opaque)
        virtual void setOpacity( uint8_t value );

        /// Toggle the window on top
        virtual void toggleOnTop( bool onTop );

        /// Change the active layout
        virtual void setActiveLayout( GenericLayout *pLayout );

        /// Update the shape of the window from the active layout
        virtual void updateShape();

        /// Called by a control that wants to capture the mouse
        virtual void onControlCapture( const CtrlGeneric &rCtrl );

        /// Called by a control that wants to release the mouse
        virtual void onControlRelease( const CtrlGeneric &rCtrl );

        /// Called by a control when its tooltip changed
        virtual void onTooltipChange( const CtrlGeneric &rCtrl );

        /// Get the coordinates of the window
        virtual int getLeft() const { return m_left; }
        virtual int getTop() const { return m_top; }
        virtual int getWidth() const { return m_width; }
        virtual int getHeight() const { return m_height; }

        /// Give access to the visibility variable
        VarBool &getVisibleVar() { return m_varVisible; }

        /// Get the list of the anchors of this window
        virtual const list<Anchor*> getAnchorList() const;

        /// Add an anchor to this window
        virtual void addAnchor( Anchor *pAnchor );

    private:
        /// Window manager
        WindowManager &m_rWindowManager;
        /// Window position and size
        int m_left, m_top, m_width, m_height;
        /// OS specific implementation
        OSWindow *m_pOsWindow;
        /// Current active layout of the window
        GenericLayout *m_pActiveLayout;
        /// Last control on which the mouse was over
        CtrlGeneric *m_pLastHitControl;
        /// Control that has captured the mouse
        CtrlGeneric *m_pCapturingControl;
        /// Control that has the focus
        CtrlGeneric *m_pFocusControl;
        /// List of the anchors of this window
        list<Anchor*> m_anchorList;
        /// Font for the tooltip
        GenericFont *m_pFont;
        /// Tooltip
        Tooltip *m_pTooltip;
        /// Variable for the visibility of the window
        VarBoolImpl m_varVisible;

        /// Method called when the observed variable is modified
        virtual void onUpdate( Subject<VarBool> &rVariable );

        // Actually show the window
        virtual void innerShow();

        // Actually hide the window
        virtual void innerHide();

        /// Find the uppest control in the layout hit by the mouse, and send
        /// it an enter event if needed
        CtrlGeneric *findHitControl( int xPos, int yPos );

        /// Update the lastHitControl pointer and send a leave event to the
        /// right control
        void setLastHit( CtrlGeneric *pNewHitControl );
};

typedef CountedPtr<GenericWindow> GenericWindowPtr;


#endif