ctrl_resize.cpp
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上传日期:2009-03-27
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- /*****************************************************************************
- * ctrl_resize.cpp
- *****************************************************************************
- * Copyright (C) 2003 VideoLAN
- * $Id: ctrl_resize.cpp 6964 2004-03-05 20:56:39Z ipkiss $
- *
- * Authors: Cyril Deguet <asmax@via.ecp.fr>
- * Olivier Teuli鑢e <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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- #include "ctrl_resize.hpp"
- #include "../events/evt_generic.hpp"
- #include "../events/evt_mouse.hpp"
- #include "../events/evt_motion.hpp"
- #include "../src/generic_layout.hpp"
- #include "../src/os_factory.hpp"
- #include "../utils/position.hpp"
- #include "../commands/async_queue.hpp"
- #include "../commands/cmd_resize.hpp"
- CtrlResize::CtrlResize( intf_thread_t *pIntf, CtrlFlat &rCtrl,
- GenericLayout &rLayout, const UString &rHelp,
- VarBool *pVisible ):
- CtrlFlat( pIntf, rHelp, pVisible ), m_fsm( pIntf ), m_rCtrl( rCtrl ),
- m_rLayout( rLayout ), m_cmdOutStill( this, &transOutStill ),
- m_cmdStillOut( this, &transStillOut ),
- m_cmdStillStill( this, &transStillStill ),
- m_cmdStillResize( this, &transStillResize ),
- m_cmdResizeStill( this, &transResizeStill ),
- m_cmdResizeResize( this, &transResizeResize )
- {
- m_pEvt = NULL;
- m_xPos = 0;
- m_yPos = 0;
- // States
- m_fsm.addState( "out" );
- m_fsm.addState( "still" );
- m_fsm.addState( "resize" );
- // Transitions
- m_fsm.addTransition( "out", "enter", "still", &m_cmdOutStill );
- m_fsm.addTransition( "still", "leave", "out", &m_cmdStillOut );
- m_fsm.addTransition( "still", "motion", "still", &m_cmdStillStill );
- m_fsm.addTransition( "resize", "mouse:left:up:none", "still",
- &m_cmdResizeStill );
- m_fsm.addTransition( "still", "mouse:left:down:none", "resize",
- &m_cmdStillResize );
- m_fsm.addTransition( "resize", "motion", "resize", &m_cmdResizeResize );
- m_fsm.setState( "still" );
- }
- bool CtrlResize::mouseOver( int x, int y ) const
- {
- return m_rCtrl.mouseOver( x, y );
- }
- void CtrlResize::draw( OSGraphics &rImage, int xDest, int yDest )
- {
- m_rCtrl.draw( rImage, xDest, yDest );
- }
- void CtrlResize::setLayout( GenericLayout *pLayout, const Position &rPosition )
- {
- CtrlGeneric::setLayout( pLayout, rPosition );
- // Set the layout of the decorated control as well
- m_rCtrl.setLayout( pLayout, rPosition );
- }
- const Position *CtrlResize::getPosition() const
- {
- return m_rCtrl.getPosition();
- }
- void CtrlResize::handleEvent( EvtGeneric &rEvent )
- {
- m_pEvt = &rEvent;
- m_fsm.handleTransition( rEvent.getAsString() );
- // Transmit the event to the decorated control
- // XXX: Is it really a good idea?
- m_rCtrl.handleEvent( rEvent );
- }
- void CtrlResize::transOutStill( SkinObject *pCtrl )
- {
- CtrlResize *pThis = (CtrlResize*)pCtrl;
- OSFactory *pOsFactory = OSFactory::instance( pThis->getIntf() );
- pOsFactory->changeCursor( OSFactory::kResizeNWSE );
- }
- void CtrlResize::transStillOut( SkinObject *pCtrl )
- {
- CtrlResize *pThis = (CtrlResize*)pCtrl;
- OSFactory *pOsFactory = OSFactory::instance( pThis->getIntf() );
- pOsFactory->changeCursor( OSFactory::kDefaultArrow );
- }
- void CtrlResize::transStillStill( SkinObject *pCtrl )
- {
- CtrlResize *pThis = (CtrlResize*)pCtrl;
- OSFactory *pOsFactory = OSFactory::instance( pThis->getIntf() );
- pOsFactory->changeCursor( OSFactory::kResizeNWSE );
- }
- void CtrlResize::transStillResize( SkinObject *pCtrl )
- {
- CtrlResize *pThis = (CtrlResize*)pCtrl;
- EvtMouse *pEvtMouse = (EvtMouse*)pThis->m_pEvt;
- // Set the cursor
- OSFactory *pOsFactory = OSFactory::instance( pThis->getIntf() );
- pOsFactory->changeCursor( OSFactory::kResizeNWSE );
- pThis->m_xPos = pEvtMouse->getXPos();
- pThis->m_yPos = pEvtMouse->getYPos();
- pThis->captureMouse();
- pThis->m_width = pThis->m_rLayout.getWidth();
- pThis->m_height = pThis->m_rLayout.getHeight();
- }
- void CtrlResize::transResizeStill( SkinObject *pCtrl )
- {
- CtrlResize *pThis = (CtrlResize*)pCtrl;
- // Set the cursor
- OSFactory *pOsFactory = OSFactory::instance( pThis->getIntf() );
- pOsFactory->changeCursor( OSFactory::kResizeNWSE );
- pThis->releaseMouse();
- }
- void CtrlResize::transResizeResize( SkinObject *pCtrl )
- {
- CtrlResize *pThis = (CtrlResize*)pCtrl;
- EvtMotion *pEvtMotion = (EvtMotion*)pThis->m_pEvt;
- // Set the cursor
- OSFactory *pOsFactory = OSFactory::instance( pThis->getIntf() );
- pOsFactory->changeCursor( OSFactory::kResizeNWSE );
- int newWidth = pEvtMotion->getXPos() - pThis->m_xPos + pThis->m_width;
- int newHeight = pEvtMotion->getYPos() - pThis->m_yPos + pThis->m_height;
- // Check boundaries
- if( newWidth < pThis->m_rLayout.getMinWidth() )
- {
- newWidth = pThis->m_rLayout.getMinWidth();
- }
- if( newWidth > pThis->m_rLayout.getMaxWidth() )
- {
- newWidth = pThis->m_rLayout.getMaxWidth();
- }
- if( newHeight < pThis->m_rLayout.getMinHeight() )
- {
- newHeight = pThis->m_rLayout.getMinHeight();
- }
- if( newHeight > pThis->m_rLayout.getMaxHeight() )
- {
- newHeight = pThis->m_rLayout.getMaxHeight();
- }
- // Create a resize command
- CmdGeneric *pCmd = new CmdResize( pThis->getIntf(), pThis->m_rLayout,
- newWidth, newHeight );
- // Push the command in the asynchronous command queue
- AsyncQueue *pQueue = AsyncQueue::instance( pThis->getIntf() );
- pQueue->remove( "resize" );
- pQueue->push( CmdGenericPtr( pCmd ) );
- }