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 *****************************************************************************/
26 #include "ctrl_list.hpp"
27 #include "../src/os_factory.hpp"
28 #include "../src/os_graphics.hpp"
29 #include "../src/generic_bitmap.hpp"
30 #include "../src/generic_font.hpp"
31 #include "../src/scaled_bitmap.hpp"
32 #include "../utils/position.hpp"
33 #include "../utils/ustring.hpp"
34 #include "../events/evt_key.hpp"
35 #include "../events/evt_mouse.hpp"
36 #include "../events/evt_scroll.hpp"
39 # include "solaris_specific.h" // for lrint
42 #define SCROLL_STEP 0.05f
43 #define LINE_INTERVAL 1 // Number of pixels inserted between 2 lines
46 CtrlList::CtrlList( intf_thread_t *pIntf, VarList &rList,
47 const GenericFont &rFont, const GenericBitmap *pBitmap,
48 uint32_t fgColor, uint32_t playColor, uint32_t bgColor1,
49 uint32_t bgColor2, uint32_t selColor,
50 const UString &rHelp, VarBool *pVisible ):
51 CtrlGeneric( pIntf, rHelp, pVisible ), m_rList( rList ), m_rFont( rFont ),
52 m_pBitmap( pBitmap ), m_fgColor( fgColor ), m_playColor( playColor ),
53 m_bgColor1( bgColor1 ), m_bgColor2( bgColor2 ), m_selColor( selColor ),
54 m_pLastSelected( NULL ), m_pImage( NULL ), m_lastPos( 0 )
56 // Observe the list and position variables
57 m_rList.addObserver( this );
58 m_rList.getPositionVar().addObserver( this );
66 m_rList.getPositionVar().delObserver( this );
67 m_rList.delObserver( this );
72 void CtrlList::onUpdate( Subject<VarList> &rList, void *arg )
75 m_pLastSelected = NULL;
79 void CtrlList::onUpdate( Subject<VarPercent> &rPercent, void *arg )
81 // Get the size of the control
82 const Position *pPos = getPosition();
87 int height = pPos->getHeight();
89 // How many lines can be displayed ?
90 int itemHeight = m_rFont.getSize() + LINE_INTERVAL;
91 int maxItems = height / itemHeight;
93 // Determine what is the first item to display
94 VarPercent &rVarPos = m_rList.getPositionVar();
96 int excessItems = m_rList.size() - maxItems;
99 // a simple (int)(...) causes rounding errors !
103 firstItem = lrint( (1.0 - rVarPos.get()) * (double)excessItems );
105 if( m_lastPos != firstItem )
107 // Redraw the control if the position has changed
108 m_lastPos = firstItem;
115 void CtrlList::onResize()
117 // Get the size of the control
118 const Position *pPos = getPosition();
123 int height = pPos->getHeight();
125 // How many lines can be displayed ?
126 int itemHeight = m_rFont.getSize() + LINE_INTERVAL;
127 int maxItems = height / itemHeight;
129 // Update the position variable
130 VarPercent &rVarPos = m_rList.getPositionVar();
131 int excessItems = m_rList.size() - maxItems;
132 if( excessItems > 0 )
134 double newVal = 1.0 - (double)m_lastPos / excessItems;
137 // Change the position to keep the same first displayed item
138 rVarPos.set( 1.0 - (double)m_lastPos / excessItems );
142 // We cannot keep the current first item
143 m_lastPos = excessItems;
152 void CtrlList::onPositionChange()
159 void CtrlList::handleEvent( EvtGeneric &rEvent )
161 if( rEvent.getAsString().find( "key:down" ) != string::npos )
163 int key = ((EvtKey&)rEvent).getKey();
164 VarList::Iterator it = m_rList.begin();
165 bool previousWasSelected = false;
166 while( it != m_rList.end() )
168 VarList::Iterator next = it;
172 // Scroll up one item
173 if( it != m_rList.begin() || &*it != m_pLastSelected )
175 bool nextWasSelected = ( &*next == m_pLastSelected );
176 (*it).m_selected = nextWasSelected;
177 if( nextWasSelected )
179 m_pLastSelected = &*it;
183 else if( key == KEY_DOWN )
185 // Scroll down one item
186 if( next != m_rList.end() || &*it != m_pLastSelected )
188 (*it).m_selected = previousWasSelected;
190 if( previousWasSelected )
192 m_pLastSelected = &*it;
193 previousWasSelected = false;
197 previousWasSelected = ( &*it == m_pLastSelected );
203 // Redraw the control
208 else if( rEvent.getAsString().find( "mouse:left" ) != string::npos )
210 EvtMouse &rEvtMouse = (EvtMouse&)rEvent;
211 const Position *pos = getPosition();
212 int yPos = m_lastPos + ( rEvtMouse.getYPos() - pos->getTop() ) /
213 (m_rFont.getSize() + LINE_INTERVAL);
214 VarList::Iterator it;
217 if( rEvent.getAsString().find( "mouse:left:down:ctrl,shift" ) !=
220 // Flag to know if the current item must be selected
222 for( it = m_rList.begin(); it != m_rList.end(); it++ )
224 bool nextSelect = select;
225 if( index == yPos || &*it == m_pLastSelected )
237 (*it).m_selected = (*it).m_selected || select;
243 else if( rEvent.getAsString().find( "mouse:left:down:ctrl" ) !=
246 for( it = m_rList.begin(); it != m_rList.end(); it++ )
250 (*it).m_selected = ! (*it).m_selected;
251 m_pLastSelected = &*it;
258 else if( rEvent.getAsString().find( "mouse:left:down:shift" ) !=
261 // Flag to know if the current item must be selected
263 for( it = m_rList.begin(); it != m_rList.end(); it++ )
265 bool nextSelect = select;
266 if( index == yPos || &*it == m_pLastSelected )
278 (*it).m_selected = select;
284 else if( rEvent.getAsString().find( "mouse:left:down" ) !=
287 for( it = m_rList.begin(); it != m_rList.end(); it++ )
291 (*it).m_selected = true;
292 m_pLastSelected = &*it;
296 (*it).m_selected = false;
302 else if( rEvent.getAsString().find( "mouse:left:dblclick" ) !=
305 for( it = m_rList.begin(); it != m_rList.end(); it++ )
309 (*it).m_selected = true;
310 m_pLastSelected = &*it;
311 // Execute the action associated to this item
312 m_rList.action( &*it );
316 (*it).m_selected = false;
322 // Redraw the control
327 else if( rEvent.getAsString().find( "scroll" ) != string::npos )
329 int direction = ((EvtScroll&)rEvent).getDirection();
331 double percentage = m_rList.getPositionVar().get();
332 double step = 2.0 / (double)m_rList.size();
333 if( direction == EvtScroll::kUp )
341 m_rList.getPositionVar().set( percentage );
346 bool CtrlList::mouseOver( int x, int y ) const
348 const Position *pPos = getPosition();
351 int width = pPos->getWidth();
352 int height = pPos->getHeight();
353 return ( x >= 0 && x <= width && y >= 0 && y <= height );
359 void CtrlList::draw( OSGraphics &rImage, int xDest, int yDest )
363 rImage.drawGraphics( *m_pImage, 0, 0, xDest, yDest );
368 void CtrlList::autoScroll()
370 // Get the size of the control
371 const Position *pPos = getPosition();
376 int height = pPos->getHeight();
378 // How many lines can be displayed ?
379 int itemHeight = m_rFont.getSize() + LINE_INTERVAL;
380 int maxItems = height / itemHeight;
382 // Find the current playing stream
384 VarList::ConstIterator it;
385 for( it = m_rList.begin(); it != m_rList.end(); it++ )
387 if( (*it).m_playing )
393 if( it != m_rList.end() &&
394 ( playIndex < m_lastPos || playIndex >= m_lastPos + maxItems ) )
396 // Scroll the list to have the playing stream visible
397 VarPercent &rVarPos = m_rList.getPositionVar();
398 rVarPos.set( 1.0 - (float)playIndex / (float)m_rList.size() );
399 // The image will be changed by onUpdate(VarPercent&)
409 void CtrlList::makeImage()
413 // Get the size of the control
414 const Position *pPos = getPosition();
419 int width = pPos->getWidth();
420 int height = pPos->getHeight();
421 int itemHeight = m_rFont.getSize() + LINE_INTERVAL;
424 OSFactory *pOsFactory = OSFactory::instance( getIntf() );
425 m_pImage = pOsFactory->createOSGraphics( width, height );
427 VarList::ConstIterator it = m_rList[m_lastPos];
429 // Draw the background
432 // A background bitmap is given, so we scale it, ignoring the
434 ScaledBitmap bmp( getIntf(), *m_pBitmap, width, height );
435 m_pImage->drawBitmap( bmp, 0, 0 );
437 // Take care of the selection color
438 for( int yPos = 0; yPos < height; yPos += itemHeight )
440 int rectHeight = __MIN( itemHeight, height - yPos );
441 if( it != m_rList.end() )
443 if( (*it).m_selected )
445 m_pImage->fillRect( 0, yPos, width, rectHeight,
454 // No background bitmap, so use the 2 background colors
455 // Current background color
456 uint32_t bgColor = m_bgColor1;
457 for( int yPos = 0; yPos < height; yPos += itemHeight )
459 int rectHeight = __MIN( itemHeight, height - yPos );
460 if( it != m_rList.end() )
462 uint32_t color = ( (*it).m_selected ? m_selColor : bgColor );
463 m_pImage->fillRect( 0, yPos, width, rectHeight, color );
468 m_pImage->fillRect( 0, yPos, width, rectHeight, bgColor );
470 // Flip the background color
471 bgColor = ( bgColor == m_bgColor1 ? m_bgColor2 : m_bgColor1 );
477 for( it = m_rList[m_lastPos]; it != m_rList.end() && yPos < height; it++ )
479 UString *pStr = (UString*)(it->m_cString.get());
480 uint32_t color = ( it->m_playing ? m_playColor : m_fgColor );
483 GenericBitmap *pText = m_rFont.drawString( *pStr, color, width );
488 yPos += itemHeight - pText->getHeight();
495 int lineHeight = __MIN( pText->getHeight() - ySrc, height - yPos );
496 m_pImage->drawBitmap( *pText, 0, ySrc, 0, yPos, pText->getWidth(),
498 yPos += (pText->getHeight() - ySrc );