modules/gui/skins2/controls/ctrl_resize.cpp

   1 /*****************************************************************************
   2  * ctrl_resize.cpp
   3  *****************************************************************************
   4  * Copyright (C) 2003 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Cyril Deguet     <asmax@via.ecp.fr>
   8  *          Olivier Teulière <ipkiss@via.ecp.fr>
   9  *
  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.
  14  *
  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.
  19  *
  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  *****************************************************************************/
  24
  25 #include "ctrl_resize.hpp"
  26 #include "../events/evt_generic.hpp"
  27 #include "../events/evt_mouse.hpp"
  28 #include "../events/evt_motion.hpp"
  29 #include "../src/generic_layout.hpp"
  30 #include "../src/os_factory.hpp"
  31 #include "../utils/position.hpp"
  32 #include "../commands/async_queue.hpp"
  33 #include "../commands/cmd_resize.hpp"
  34
  35
  36 CtrlResize::CtrlResize( intf_thread_t *pIntf, WindowManager &rWindowManager,
  37                         CtrlFlat &rCtrl, GenericLayout &rLayout,
  38                         const UString &rHelp, VarBool *pVisible,
  39                         WindowManager::Direction_t direction ):
  40     CtrlFlat( pIntf, rHelp, pVisible ), m_fsm( pIntf ),
  41     m_rWindowManager( rWindowManager ), m_rCtrl( rCtrl ),
  42     m_rLayout( rLayout ), m_direction( direction ),  m_cmdOutStill( this ),
  43     m_cmdStillOut( this ),
  44     m_cmdStillStill( this ),
  45     m_cmdStillResize( this ),
  46     m_cmdResizeStill( this ),
  47     m_cmdResizeResize( this )
  48 {
  49     m_pEvt = NULL;
  50     m_xPos = 0;
  51     m_yPos = 0;
  52
  53     // States
  54     m_fsm.addState( "out" );
  55     m_fsm.addState( "still" );
  56     m_fsm.addState( "resize" );
  57
  58     // Transitions
  59     m_fsm.addTransition( "out", "enter", "still", &m_cmdOutStill );
  60     m_fsm.addTransition( "still", "leave", "out", &m_cmdStillOut );
  61     m_fsm.addTransition( "still", "motion", "still", &m_cmdStillStill );
  62     m_fsm.addTransition( "resize", "mouse:left:up:none", "still",
  63                          &m_cmdResizeStill );
  64     m_fsm.addTransition( "still", "mouse:left:down:none", "resize",
  65                          &m_cmdStillResize );
  66     m_fsm.addTransition( "resize", "motion", "resize", &m_cmdResizeResize );
  67
  68     m_fsm.setState( "still" );
  69 }
  70
  71
  72 bool CtrlResize::mouseOver( int x, int y ) const
  73 {
  74     return m_rCtrl.mouseOver( x, y );
  75 }
  76
  77
  78 void CtrlResize::draw( OSGraphics &rImage, int xDest, int yDest, int w, int h )
  79 {
  80     m_rCtrl.draw( rImage, xDest, yDest, w, h );
  81 }
  82
  83
  84 void CtrlResize::setLayout( GenericLayout *pLayout, const Position &rPosition )
  85 {
  86     CtrlGeneric::setLayout( pLayout, rPosition );
  87     // Set the layout of the decorated control as well
  88     m_rCtrl.setLayout( pLayout, rPosition );
  89 }
  90
  91
  92 void CtrlResize::unsetLayout()
  93 {
  94     m_rCtrl.unsetLayout();
  95     CtrlGeneric::unsetLayout();
  96 }
  97
  98
  99 const Position *CtrlResize::getPosition() const
 100 {
 101     return m_rCtrl.getPosition();
 102 }
 103
 104
 105 void CtrlResize::onResize()
 106 {
 107     m_rCtrl.onResize();
 108 }
 109
 110
 111 void CtrlResize::handleEvent( EvtGeneric &rEvent )
 112 {
 113     m_pEvt = &rEvent;
 114     m_fsm.handleTransition( rEvent.getAsString() );
 115     // Transmit the event to the decorated control
 116     // XXX: Is it really a good idea?
 117     m_rCtrl.handleEvent( rEvent );
 118 }
 119
 120
 121 void CtrlResize::changeCursor( WindowManager::Direction_t direction ) const
 122 {
 123     OSFactory::CursorType_t cursor;
 124     switch( direction )
 125     {
 126     default:
 127     case WindowManager::kNone:     cursor = OSFactory::kDefaultArrow; break;
 128     case WindowManager::kResizeSE: cursor = OSFactory::kResizeNWSE;   break;
 129     case WindowManager::kResizeS:  cursor = OSFactory::kResizeNS;     break;
 130     case WindowManager::kResizeE:  cursor = OSFactory::kResizeWE;     break;
 131     }
 132     OSFactory::instance( getIntf() )->changeCursor( cursor );
 133 }
 134
 135
 136 void CtrlResize::CmdOutStill::execute()
 137 {
 138     m_pParent->changeCursor( m_pParent->m_direction );
 139 }
 140
 141
 142 void CtrlResize::CmdStillOut::execute()
 143 {
 144     m_pParent->changeCursor( WindowManager::kNone );
 145 }
 146
 147
 148 void CtrlResize::CmdStillStill::execute()
 149 {
 150     m_pParent->changeCursor( m_pParent->m_direction );
 151 }
 152
 153
 154 void CtrlResize::CmdStillResize::execute()
 155 {
 156     EvtMouse *pEvtMouse = static_cast<EvtMouse*>(m_pParent->m_pEvt);
 157
 158     // Set the cursor
 159     m_pParent->changeCursor( m_pParent->m_direction );
 160
 161     m_pParent->m_xPos = pEvtMouse->getXPos();
 162     m_pParent->m_yPos = pEvtMouse->getYPos();
 163
 164     m_pParent->captureMouse();
 165
 166     m_pParent->m_width = m_pParent->m_rLayout.getWidth();
 167     m_pParent->m_height = m_pParent->m_rLayout.getHeight();
 168
 169     m_pParent->m_rWindowManager.startResize( m_pParent->m_rLayout,
 170                                              m_pParent->m_direction);
 171 }
 172
 173
 174 void CtrlResize::CmdResizeStill::execute()
 175 {
 176     // Set the cursor
 177     m_pParent->changeCursor( m_pParent->m_direction );
 178
 179     m_pParent->releaseMouse();
 180
 181     m_pParent->m_rWindowManager.stopResize();
 182 }
 183
 184
 185 void CtrlResize::CmdResizeResize::execute()
 186 {
 187     EvtMotion *pEvtMotion = static_cast<EvtMotion*>(m_pParent->m_pEvt);
 188
 189     m_pParent->changeCursor( m_pParent->m_direction );
 190
 191     int newWidth = m_pParent->m_width;
 192     newWidth += pEvtMotion->getXPos() - m_pParent->m_xPos;
 193     int newHeight = m_pParent->m_height;
 194     newHeight += pEvtMotion->getYPos() - m_pParent->m_yPos;
 195
 196     // Create a resize command, instead of calling the window manager directly.
 197     // Thanks to this trick, the duplicate resizing commands will be trashed
 198     // in the asynchronous queue, thus making resizing faster
 199     CmdGeneric *pCmd = new CmdResize( m_pParent->getIntf(),
 200                                       m_pParent->m_rWindowManager,
 201                                       m_pParent->m_rLayout,
 202                                       newWidth, newHeight );
 203     // Push the command in the asynchronous command queue
 204     AsyncQueue::instance( getIntf() )->push( CmdGenericPtr( pCmd ) );
 205 }