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https://code.videolan.org/videolan/vlc
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96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
/*****************************************************************************
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* ctrl_radialslider.hpp
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*****************************************************************************
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* Copyright (C) 2003 the VideoLAN team
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*
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* Authors: Cyril Deguet <asmax@via.ecp.fr>
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* Olivier Teulière <ipkiss@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifndef CTRL_RADIALSLIDER_HPP
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#define CTRL_RADIALSLIDER_HPP
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#include "ctrl_generic.hpp"
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#include "../utils/fsm.hpp"
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#include "../utils/observer.hpp"
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class GenericBitmap;
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class OSGraphics;
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class VarPercent;
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/// Radial slider
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class CtrlRadialSlider: public CtrlGeneric, public Observer<VarPercent>
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{
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public:
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/// Create a radial slider with the given image, which must be
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/// composed of numImg subimages of the same size
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CtrlRadialSlider( intf_thread_t *pIntf, const GenericBitmap &rBmpSeq,
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int numImg, VarPercent &rVariable, float minAngle,
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float maxAngle, const UString &rHelp,
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VarBool *pVisible );
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virtual ~CtrlRadialSlider();
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/// Handle an event
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virtual void handleEvent( EvtGeneric &rEvent );
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/// Check whether coordinates are inside the control
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virtual bool mouseOver( int x, int y ) const;
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/// Draw the control on the given graphics
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virtual void draw( OSGraphics &rImage, int xDest, int yDest, int w, int h );
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/// Get the type of control (custom RTTI)
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virtual std::string getType() const { return "radial_slider"; }
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private:
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/// Finite state machine of the control
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FSM m_fsm;
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/// Number of sub-images in the slider image
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int m_numImg;
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/// Variable associated to the slider
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VarPercent &m_rVariable;
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/// Min and max angles of the button
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float m_minAngle, m_maxAngle;
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/// Position of the cursor
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int m_position;
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/// Size of an image
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int m_width, m_height;
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/// The last received event
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EvtGeneric *m_pEvt;
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/// Sequence of images
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const OSGraphics * const m_pImgSeq;
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/// Callback objects
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DEFINE_CALLBACK( CtrlRadialSlider, UpDown )
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DEFINE_CALLBACK( CtrlRadialSlider, DownUp )
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DEFINE_CALLBACK( CtrlRadialSlider, Move )
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/// Method called when the observed variable is modified
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virtual void onUpdate( Subject<VarPercent> &rVariable, void* );
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/// Change the position of the cursor, with the given position of
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/// the mouse (relative to the layout). Is blocking is true, the
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/// the cursor cannot do more than a half turn
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void setCursor( int posX, int posY, bool blocking );
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};
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#endif
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