1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2003 the VideoLAN team
7 * Authors: Cyril Deguet <asmax@via.ecp.fr>
8 * Olivier Teulière <ipkiss@via.ecp.fr>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 #ifndef CTRL_GENERIC_HPP
26 #define CTRL_GENERIC_HPP
28 #include "../src/skin_common.hpp"
29 #include "../utils/pointer.hpp"
30 #include "../utils/ustring.hpp"
31 #include "../utils/observer.hpp"
32 #include "../commands/cmd_generic.hpp"
43 /// Base class for controls
44 class CtrlGeneric: public SkinObject, public Observer<VarBool>
47 virtual ~CtrlGeneric();
49 /// Handle an event on the control
50 virtual void handleEvent( EvtGeneric &rEvent ) { }
52 /// Check whether coordinates are inside the control
53 virtual bool mouseOver( int x, int y ) const { return false; }
55 /// Draw the control on the given graphics
56 virtual void draw( OSGraphics &rImage, int xDest, int yDest, int w, int h ) { }
58 /// Set the position and the associated layout of the control
59 virtual void setLayout( GenericLayout *pLayout,
60 const Position &rPosition );
61 virtual void unsetLayout();
63 /// Get the position of the control in the layout, if any
64 virtual const Position *getPosition() const { return m_pPosition; }
66 /// Get the text of the tooltip
67 virtual UString getTooltipText() const
68 { return UString( getIntf(), "" ); }
71 * Overload this method if you want to do something special when
72 * the layout is resized
74 virtual void onResize() { }
77 virtual const UString &getHelpText() const { return m_help; }
79 /// Return true if the control can gain the focus
80 virtual bool isFocusable() const { return false; }
82 /// Return true if the control is visible
83 virtual bool isVisible() const;
85 /// Get the type of control (custom RTTI)
86 virtual string getType() const { return ""; }
89 // If pVisible is NULL, the control is always visible
90 CtrlGeneric( intf_thread_t *pIntf, const UString &rHelp,
91 VarBool *pVisible = NULL );
94 * Tell the layout when the image has changed, with the size of the
95 * rectangle to repaint and its offset.
96 * Use the default values to repaint the whole window
98 virtual void notifyLayout( int witdh = -1, int height = -1,
99 int xOffSet = 0, int yOffSet = 0 );
102 * Same as notifyLayout(), but takes optional images as parameters.
103 * The maximum size(s) of the images will be used for repainting.
105 void notifyLayoutMaxSize( const Box *pImg1 = NULL,
106 const Box *pImg2 = NULL );
108 /// Ask the layout to capture the mouse
109 virtual void captureMouse() const;
111 /// Ask the layout to release the mouse
112 virtual void releaseMouse() const;
114 /// Notify the window the tooltip has changed
115 virtual void notifyTooltipChange() const;
117 /// Get the associated window, if any
118 virtual TopWindow *getWindow() const;
121 * Overload this method if you want to do something special when
122 * the Position object is set
124 virtual void onPositionChange() { }
126 /// Overload this method to get notified of bool variable changes
127 virtual void onVarBoolUpdate( VarBool &rVar ) { }
129 /// Method called when an observed bool variable is changed
130 virtual void onUpdate( Subject<VarBool> &rVariable , void* );
132 /// Associated layout
133 GenericLayout *m_pLayout;
135 /// Visibility variable
139 /// Position in the layout
140 Position *m_pPosition;
146 typedef CountedPtr<CtrlGeneric> CtrlGenericPtr;