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
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 #include "ctrl_slider.hpp"
26 #include "../events/evt_enter.hpp"
27 #include "../events/evt_mouse.hpp"
28 #include "../events/evt_scroll.hpp"
29 #include "../src/generic_bitmap.hpp"
30 #include "../src/scaled_bitmap.hpp"
31 #include "../src/top_window.hpp"
32 #include "../src/os_factory.hpp"
33 #include "../src/os_graphics.hpp"
34 #include "../utils/position.hpp"
35 #include "../utils/var_percent.hpp"
39 #define SCROLL_STEP 0.05f
42 CtrlSliderCursor::CtrlSliderCursor( intf_thread_t *pIntf,
43 const GenericBitmap &rBmpUp,
44 const GenericBitmap &rBmpOver,
45 const GenericBitmap &rBmpDown,
47 VarPercent &rVariable,
49 const UString &rTooltip,
50 const UString &rHelp ):
51 CtrlGeneric( pIntf, rHelp, pVisible ), m_fsm( pIntf ),
52 m_rVariable( rVariable ), m_tooltip( rTooltip ),
53 m_width( rCurve.getWidth() ), m_height( rCurve.getHeight() ),
54 m_cmdOverDown( this ), m_cmdDownOver( this ),
55 m_cmdOverUp( this ), m_cmdUpOver( this ),
56 m_cmdMove( this ), m_cmdScroll( this ),
57 m_lastPercentage( 0 ), m_xOffset( 0 ), m_yOffset( 0 ),
58 m_pEvt( NULL ), m_rCurve( rCurve )
60 // Build the images of the cursor
61 OSFactory *pOsFactory = OSFactory::instance( getIntf() );
62 m_pImgUp = pOsFactory->createOSGraphics( rBmpUp.getWidth(),
64 m_pImgUp->drawBitmap( rBmpUp, 0, 0 );
65 m_pImgDown = pOsFactory->createOSGraphics( rBmpDown.getWidth(),
66 rBmpDown.getHeight() );
67 m_pImgDown->drawBitmap( rBmpDown, 0, 0 );
68 m_pImgOver = pOsFactory->createOSGraphics( rBmpOver.getWidth(),
69 rBmpOver.getHeight() );
70 m_pImgOver->drawBitmap( rBmpOver, 0, 0 );
73 m_fsm.addState( "up" );
74 m_fsm.addState( "over" );
75 m_fsm.addState( "down" );
78 m_fsm.addTransition( "over", "mouse:left:down", "down",
80 m_fsm.addTransition( "down", "mouse:left:up", "over",
82 m_fsm.addTransition( "over", "leave", "up", &m_cmdOverUp );
83 m_fsm.addTransition( "up", "enter", "over", &m_cmdUpOver );
84 m_fsm.addTransition( "down", "motion", "down", &m_cmdMove );
85 m_fsm.addTransition( "over", "scroll", "over", &m_cmdScroll );
88 m_fsm.setState( "up" );
91 // Observe the position variable
92 m_rVariable.addObserver( this );
94 // Initial position of the cursor
95 m_lastPercentage = m_rVariable.get();
99 CtrlSliderCursor::~CtrlSliderCursor()
101 m_rVariable.delObserver( this );
102 SKINS_DELETE( m_pImgUp );
103 SKINS_DELETE( m_pImgDown );
104 SKINS_DELETE( m_pImgOver );
108 void CtrlSliderCursor::handleEvent( EvtGeneric &rEvent )
110 // Save the event to use it in callbacks
113 m_fsm.handleTransition( rEvent.getAsString() );
117 bool CtrlSliderCursor::mouseOver( int x, int y ) const
121 // Compute the position of the cursor
123 m_rCurve.getPoint( m_rVariable.get(), xPos, yPos );
125 // Compute the resize factors
126 float factorX, factorY;
127 getResizeFactors( factorX, factorY );
128 xPos = (int)(xPos * factorX);
129 yPos = (int)(yPos * factorY);
131 return m_pImg->hit( x - xPos + m_pImg->getWidth() / 2,
132 y - yPos + m_pImg->getHeight() / 2 );
141 void CtrlSliderCursor::draw( OSGraphics &rImage, int xDest, int yDest )
145 // Compute the position of the cursor
147 m_rCurve.getPoint( m_rVariable.get(), xPos, yPos );
149 // Compute the resize factors
150 float factorX, factorY;
151 getResizeFactors( factorX, factorY );
152 xPos = (int)(xPos * factorX);
153 yPos = (int)(yPos * factorY);
155 // Draw the current image
156 rImage.drawGraphics( *m_pImg, 0, 0,
157 xDest + xPos - m_pImg->getWidth() / 2,
158 yDest + yPos - m_pImg->getHeight() / 2 );
163 void CtrlSliderCursor::onUpdate( Subject<VarPercent> &rVariable,
166 // The position has changed
171 void CtrlSliderCursor::CmdOverDown::execute()
173 EvtMouse *pEvtMouse = (EvtMouse*)m_pParent->m_pEvt;
175 // Compute the resize factors
176 float factorX, factorY;
177 m_pParent->getResizeFactors( factorX, factorY );
179 // Get the position of the control
180 const Position *pPos = m_pParent->getPosition();
182 // Compute the offset
184 m_pParent->m_rCurve.getPoint( m_pParent->m_rVariable.get(), tempX, tempY );
185 m_pParent->m_xOffset = pEvtMouse->getXPos() - pPos->getLeft()
186 - (int)(tempX * factorX);
187 m_pParent->m_yOffset = pEvtMouse->getYPos() - pPos->getTop()
188 - (int)(tempY * factorY);
190 m_pParent->captureMouse();
191 m_pParent->m_pImg = m_pParent->m_pImgDown;
192 m_pParent->refreshLayout();
196 void CtrlSliderCursor::CmdDownOver::execute()
199 m_pParent->m_lastPercentage = m_pParent->m_rVariable.get();
201 m_pParent->releaseMouse();
202 m_pParent->m_pImg = m_pParent->m_pImgUp;
203 m_pParent->refreshLayout();
207 void CtrlSliderCursor::CmdUpOver::execute()
209 m_pParent->m_pImg = m_pParent->m_pImgOver;
210 m_pParent->refreshLayout();
214 void CtrlSliderCursor::CmdOverUp::execute()
216 m_pParent->m_pImg = m_pParent->m_pImgUp;
217 m_pParent->refreshLayout();
221 void CtrlSliderCursor::CmdMove::execute()
223 EvtMouse *pEvtMouse = (EvtMouse*)m_pParent->m_pEvt;
225 // Get the position of the control
226 const Position *pPos = m_pParent->getPosition();
228 // Compute the resize factors
229 float factorX, factorY;
230 m_pParent->getResizeFactors( factorX, factorY );
232 // Compute the relative position of the centre of the cursor
233 float relX = pEvtMouse->getXPos() - pPos->getLeft() - m_pParent->m_xOffset;
234 float relY = pEvtMouse->getYPos() - pPos->getTop() - m_pParent->m_yOffset;
235 // Ponderate with the resize factors
236 int relXPond = (int)(relX / factorX);
237 int relYPond = (int)(relY / factorY);
239 // Update the position
240 if( m_pParent->m_rCurve.getMinDist( relXPond, relYPond ) < RANGE )
242 float percentage = m_pParent->m_rCurve.getNearestPercent( relXPond,
244 m_pParent->m_rVariable.set( percentage );
248 m_pParent->m_rVariable.set( m_pParent->m_lastPercentage );
252 void CtrlSliderCursor::CmdScroll::execute()
254 EvtScroll *pEvtScroll = (EvtScroll*)m_pParent->m_pEvt;
256 int direction = pEvtScroll->getDirection();
258 float percentage = m_pParent->m_rVariable.get();
259 if( direction == EvtScroll::kUp )
261 percentage += SCROLL_STEP;
265 percentage -= SCROLL_STEP;
268 m_pParent->m_rVariable.set( percentage );
272 void CtrlSliderCursor::getResizeFactors( float &rFactorX,
273 float &rFactorY ) const
275 // Get the position of the control
276 const Position *pPos = getPosition();
281 // Compute the resize factors
284 rFactorX = (float)pPos->getWidth() / (float)m_width;
288 rFactorY = (float)pPos->getHeight() / (float)m_height;
293 void CtrlSliderCursor::refreshLayout()
297 // Compute the resize factors
298 float factorX, factorY;
299 getResizeFactors( factorX, factorY );
301 notifyLayout( (int)(m_rCurve.getWidth() * factorX) + m_pImg->getWidth(),
302 (int)(m_rCurve.getHeight() * factorY) + m_pImg->getHeight(),
303 - m_pImg->getWidth() / 2,
304 - m_pImg->getHeight() / 2 );
311 CtrlSliderBg::CtrlSliderBg( intf_thread_t *pIntf,
312 const Bezier &rCurve, VarPercent &rVariable,
313 int thickness, GenericBitmap *pBackground,
314 int nbHoriz, int nbVert, int padHoriz, int padVert,
315 VarBool *pVisible, const UString &rHelp ):
316 CtrlGeneric( pIntf, rHelp, pVisible ), m_pCursor( NULL ),
317 m_rVariable( rVariable ), m_thickness( thickness ), m_rCurve( rCurve ),
318 m_width( rCurve.getWidth() ), m_height( rCurve.getHeight() ),
319 m_pImgSeq( pBackground ), m_nbHoriz( nbHoriz ), m_nbVert( nbVert ),
320 m_padHoriz( padHoriz ), m_padVert( padVert ), m_bgWidth( 0 ),
321 m_bgHeight( 0 ), m_position( 0 )
325 // Build the background image sequence
326 // Note: we suppose that the last padding is not included in the
328 // TODO: we should probably change this assumption, as it would make
329 // the code a bit simpler and it would be more natural for the skins
331 m_bgWidth = (pBackground->getWidth() + m_padHoriz) / nbHoriz;
332 m_bgHeight = (pBackground->getHeight() + m_padVert) / nbVert;
334 // Observe the position variable
335 m_rVariable.addObserver( this );
338 m_position = (int)( m_rVariable.get() * (m_nbHoriz * m_nbVert - 1) );
343 CtrlSliderBg::~CtrlSliderBg()
345 m_rVariable.delObserver( this );
349 bool CtrlSliderBg::mouseOver( int x, int y ) const
351 // Compute the resize factors
352 float factorX, factorY;
353 getResizeFactors( factorX, factorY );
355 return (m_rCurve.getMinDist( (int)(x / factorX), (int)(y / factorY),
356 factorX, factorY ) < m_thickness );
360 void CtrlSliderBg::draw( OSGraphics &rImage, int xDest, int yDest )
364 if( m_bgWidth > 0 && m_bgHeight > 0 )
366 // Compute the resize factors
367 float factorX, factorY;
368 getResizeFactors( factorX, factorY );
370 // Rescale the image with the actual size of the control
371 ScaledBitmap bmp( getIntf(), *m_pImgSeq,
372 m_bgWidth * m_nbHoriz - (int)(m_padHoriz * factorX),
373 m_bgHeight * m_nbVert - (int)(m_padVert * factorY) );
375 // Locate the right image in the background bitmap
376 int x = m_bgWidth * ( m_position % m_nbHoriz );
377 int y = m_bgHeight * ( m_position / m_nbHoriz );
378 // Draw the background image
379 rImage.drawBitmap( bmp, x, y, xDest, yDest,
380 m_bgWidth - (int)(m_padHoriz * factorX),
381 m_bgHeight - (int)(m_padVert * factorY) );
387 void CtrlSliderBg::handleEvent( EvtGeneric &rEvent )
389 if( rEvent.getAsString().find( "mouse:left:down" ) != string::npos )
391 // Compute the resize factors
392 float factorX, factorY;
393 getResizeFactors( factorX, factorY );
395 // Get the position of the control
396 const Position *pPos = getPosition();
398 // Get the value corresponding to the position of the mouse
399 EvtMouse &rEvtMouse = (EvtMouse&)rEvent;
400 int x = rEvtMouse.getXPos();
401 int y = rEvtMouse.getYPos();
402 m_rVariable.set( m_rCurve.getNearestPercent(
403 (int)((x - pPos->getLeft()) / factorX),
404 (int)((y - pPos->getTop()) / factorY) ) );
406 // Forward the clic to the cursor
407 EvtMouse evt( getIntf(), x, y, EvtMouse::kLeft, EvtMouse::kDown );
408 TopWindow *pWin = getWindow();
409 if( pWin && m_pCursor )
411 EvtEnter evtEnter( getIntf() );
412 // XXX It was not supposed to be implemented like that !!
413 pWin->forwardEvent( evtEnter, *m_pCursor );
414 pWin->forwardEvent( evt, *m_pCursor );
417 else if( rEvent.getAsString().find( "scroll" ) != string::npos )
419 int direction = ((EvtScroll&)rEvent).getDirection();
421 float percentage = m_rVariable.get();
422 if( direction == EvtScroll::kUp )
424 percentage += SCROLL_STEP;
428 percentage -= SCROLL_STEP;
431 m_rVariable.set( percentage );
436 void CtrlSliderBg::onResize()
440 // Compute only the new size of an elementary image.
441 // The actual resizing is done in the draw() method for now...
443 // Compute the resize factors
444 float factorX, factorY;
445 getResizeFactors( factorX, factorY );
447 // Size of one elementary background image (padding included)
448 m_bgWidth = (int)((m_pImgSeq->getWidth() + m_padHoriz) * factorX / m_nbHoriz);
449 m_bgHeight = (int)((m_pImgSeq->getHeight() + m_padVert) * factorY / m_nbVert);
454 void CtrlSliderBg::associateCursor( CtrlSliderCursor &rCursor )
456 m_pCursor = &rCursor;
460 void CtrlSliderBg::onUpdate( Subject<VarPercent> &rVariable, void*arg )
462 m_position = (int)( m_rVariable.get() * (m_nbHoriz * m_nbVert - 1) );
463 notifyLayout( m_bgWidth, m_bgHeight );
467 void CtrlSliderBg::getResizeFactors( float &rFactorX, float &rFactorY ) const
469 // Get the position of the control
470 const Position *pPos = getPosition();
475 // Compute the resize factors
478 rFactorX = (float)pPos->getWidth() / (float)m_width;
482 rFactorY = (float)pPos->getHeight() / (float)m_height;