1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2003 VideoLAN
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., 59 Temple Place - Suite 330, Boston, MA 02111, 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 0.05
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 );
75 void CtrlList::onUpdate( Subject<VarList> &rList )
78 m_pLastSelected = NULL;
82 void CtrlList::onUpdate( Subject<VarPercent> &rPercent )
84 // Get the size of the control
85 const Position *pPos = getPosition();
90 int height = pPos->getHeight();
92 // How many lines can be displayed ?
93 int itemHeight = m_rFont.getSize() + LINE_INTERVAL;
94 int maxItems = height / itemHeight;
96 // Determine what is the first item to display
97 VarPercent &rVarPos = m_rList.getPositionVar();
99 int excessItems = m_rList.size() - maxItems;
100 if( excessItems > 0 )
102 // a simple (int)(...) causes rounding errors !
106 firstItem = lrint( (1.0 - rVarPos.get()) * (double)excessItems );
108 if( m_lastPos != firstItem )
110 // Redraw the control if the position has changed
111 m_lastPos = firstItem;
118 void CtrlList::onResize()
120 // Get the size of the control
121 const Position *pPos = getPosition();
126 int height = pPos->getHeight();
128 // How many lines can be displayed ?
129 int itemHeight = m_rFont.getSize() + LINE_INTERVAL;
130 int maxItems = height / itemHeight;
132 // Update the position variable
133 VarPercent &rVarPos = m_rList.getPositionVar();
134 int excessItems = m_rList.size() - maxItems;
135 if( excessItems > 0 )
137 double newVal = 1.0 - (double)m_lastPos / excessItems;
140 // Change the position to keep the same first displayed item
141 rVarPos.set( 1.0 - (double)m_lastPos / excessItems );
145 // We cannot keep the current first item
146 m_lastPos = excessItems;
155 void CtrlList::onPositionChange()
162 void CtrlList::handleEvent( EvtGeneric &rEvent )
164 if( rEvent.getAsString().find( "key:down" ) != string::npos )
166 int key = ((EvtKey&)rEvent).getKey();
167 VarList::Iterator it = m_rList.begin();
168 bool previousWasSelected = false;
169 while( it != m_rList.end() )
171 VarList::Iterator next = it;
175 // Scroll up one item
176 if( it != m_rList.begin() || &*it != m_pLastSelected )
178 bool nextWasSelected = ( &*next == m_pLastSelected );
179 (*it).m_selected = nextWasSelected;
180 if( nextWasSelected )
182 m_pLastSelected = &*it;
186 else if( key == KEY_DOWN )
188 // Scroll down one item
189 if( next != m_rList.end() || &*it != m_pLastSelected )
191 (*it).m_selected = previousWasSelected;
193 if( previousWasSelected )
195 m_pLastSelected = &*it;
196 previousWasSelected = false;
200 previousWasSelected = ( &*it == m_pLastSelected );
206 // Redraw the control
211 else if( rEvent.getAsString().find( "mouse:left" ) != string::npos )
213 EvtMouse &rEvtMouse = (EvtMouse&)rEvent;
214 const Position *pos = getPosition();
215 int yPos = m_lastPos + ( rEvtMouse.getYPos() - pos->getTop() ) /
216 (m_rFont.getSize() + LINE_INTERVAL);
217 VarList::Iterator it;
220 if( rEvent.getAsString().find( "mouse:left:down:ctrl,shift" ) !=
223 // Flag to know if the current item must be selected
225 for( it = m_rList.begin(); it != m_rList.end(); it++ )
227 bool nextSelect = select;
228 if( index == yPos || &*it == m_pLastSelected )
240 (*it).m_selected = (*it).m_selected || select;
246 else if( rEvent.getAsString().find( "mouse:left:down:ctrl" ) !=
249 for( it = m_rList.begin(); it != m_rList.end(); it++ )
253 (*it).m_selected = ! (*it).m_selected;
254 m_pLastSelected = &*it;
261 else if( rEvent.getAsString().find( "mouse:left:down:shift" ) !=
264 // Flag to know if the current item must be selected
266 for( it = m_rList.begin(); it != m_rList.end(); it++ )
268 bool nextSelect = select;
269 if( index == yPos || &*it == m_pLastSelected )
281 (*it).m_selected = select;
287 else if( rEvent.getAsString().find( "mouse:left:down" ) !=
290 for( it = m_rList.begin(); it != m_rList.end(); it++ )
294 (*it).m_selected = true;
295 m_pLastSelected = &*it;
299 (*it).m_selected = false;
305 else if( rEvent.getAsString().find( "mouse:left:dblclick" ) !=
308 for( it = m_rList.begin(); it != m_rList.end(); it++ )
312 (*it).m_selected = true;
313 m_pLastSelected = &*it;
314 // Execute the action associated to this item
315 m_rList.action( &*it );
319 (*it).m_selected = false;
325 // Redraw the control
330 else if( rEvent.getAsString().find( "scroll" ) != string::npos )
332 int direction = ((EvtScroll&)rEvent).getDirection();
334 double percentage = m_rList.getPositionVar().get();
335 if( direction == EvtScroll::kUp )
337 percentage += SCROLL_STEP;
341 percentage -= SCROLL_STEP;
343 m_rList.getPositionVar().set( percentage );
348 bool CtrlList::mouseOver( int x, int y ) const
350 const Position *pPos = getPosition();
353 int width = pPos->getWidth();
354 int height = pPos->getHeight();
355 return ( x >= 0 && x <= width && y >= 0 && y <= height );
361 void CtrlList::draw( OSGraphics &rImage, int xDest, int yDest )
365 rImage.drawGraphics( *m_pImage, 0, 0, xDest, yDest );
370 void CtrlList::autoScroll()
372 // Get the size of the control
373 const Position *pPos = getPosition();
378 int height = pPos->getHeight();
380 // How many lines can be displayed ?
381 int itemHeight = m_rFont.getSize() + LINE_INTERVAL;
382 int maxItems = height / itemHeight;
384 // Find the current playing stream
386 VarList::ConstIterator it;
387 for( it = m_rList.begin(); it != m_rList.end(); it++ )
389 if( (*it).m_playing )
395 if( it != m_rList.end() &&
396 ( playIndex < m_lastPos || playIndex >= m_lastPos + maxItems ) )
398 // Scroll the list to have the playing stream visible
399 VarPercent &rVarPos = m_rList.getPositionVar();
400 rVarPos.set( 1.0 - (float)playIndex / (float)m_rList.size() );
401 // The image will be changed by onUpdate(VarPercent&)
411 void CtrlList::makeImage()
418 // Get the size of the control
419 const Position *pPos = getPosition();
424 int width = pPos->getWidth();
425 int height = pPos->getHeight();
426 int itemHeight = m_rFont.getSize() + LINE_INTERVAL;
429 OSFactory *pOsFactory = OSFactory::instance( getIntf() );
430 m_pImage = pOsFactory->createOSGraphics( width, height );
432 VarList::ConstIterator it = m_rList[m_lastPos];
434 // Draw the background
437 // A background bitmap is given, so we scale it, ignoring the
439 ScaledBitmap bmp( getIntf(), *m_pBitmap, width, height );
440 m_pImage->drawBitmap( bmp, 0, 0 );
442 // Take care of the selection color
443 for( int yPos = 0; yPos < height; yPos += itemHeight )
445 int rectHeight = __MIN( itemHeight, height - yPos );
446 if( it != m_rList.end() )
448 if( (*it).m_selected )
450 m_pImage->fillRect( 0, yPos, width, rectHeight,
459 // No background bitmap, so use the 2 background colors
460 // Current background color
461 uint32_t bgColor = m_bgColor1;
462 for( int yPos = 0; yPos < height; yPos += itemHeight )
464 int rectHeight = __MIN( itemHeight, height - yPos );
465 if( it != m_rList.end() )
467 uint32_t color = ( (*it).m_selected ? m_selColor : bgColor );
468 m_pImage->fillRect( 0, yPos, width, rectHeight, color );
473 m_pImage->fillRect( 0, yPos, width, rectHeight, bgColor );
475 // Flip the background color
476 bgColor = ( bgColor == m_bgColor1 ? m_bgColor2 : m_bgColor1 );
482 for( it = m_rList[m_lastPos]; it != m_rList.end() && yPos < height; it++ )
484 UString *pStr = (UString*)((*it).m_cString.get());
485 uint32_t color = ( (*it).m_playing ? m_playColor : m_fgColor );
488 GenericBitmap *pText = m_rFont.drawString( *pStr, color, width );
493 yPos += itemHeight - pText->getHeight();
500 int lineHeight = __MIN( pText->getHeight() - ySrc, height - yPos );
501 m_pImage->drawBitmap( *pText, 0, ySrc, 0, yPos, pText->getWidth(),
503 yPos += (pText->getHeight() - ySrc );