modules/gui/qt4/util/customwidgets.cpp

   1 /*****************************************************************************
   2  * customwidgets.cpp: Custom widgets
   3  ****************************************************************************
   4  * Copyright (C) 2006 the VideoLAN team
   5  * Copyright (C) 2004 Daniel Molkentin <molkentin@kde.org>
   6  * $Id$
   7  *
   8  * Authors: Clément Stenac <zorglub@videolan.org>
   9  * The "ClickLineEdit" control is based on code by  Daniel Molkentin
  10  * <molkentin@kde.org> for libkdepim
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  25  *****************************************************************************/
  26
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include "customwidgets.hpp"
  32 #include "qt4.hpp" /*needed for qtr and CONNECT, but not necessary */
  33
  34 #include <QPainter>
  35 #include <QColorGroup>
  36 #include <QRect>
  37 #include <QKeyEvent>
  38 #include <QWheelEvent>
  39 #include <QHBoxLayout>
  40 #include <QStyle>
  41 #include <QStyleOption>
  42 #include <vlc_intf_strings.h>
  43 #include <vlc_keys.h>
  44 #include <wctype.h> /* twolower() */
  45
  46 ClickLineEdit::ClickLineEdit( const QString &msg, QWidget *parent) : QLineEdit( parent )
  47 {
  48     mDrawClickMsg = true;
  49     setClickMessage( msg );
  50 }
  51
  52 void ClickLineEdit::setClickMessage( const QString &msg )
  53 {
  54     mClickMessage = msg;
  55     repaint();
  56 }
  57
  58
  59 void ClickLineEdit::setText( const QString &txt )
  60 {
  61     mDrawClickMsg = txt.isEmpty();
  62     repaint();
  63     QLineEdit::setText( txt );
  64 }
  65
  66 void ClickLineEdit::paintEvent( QPaintEvent *pe )
  67 {
  68     QLineEdit::paintEvent( pe );
  69     if ( mDrawClickMsg == true && !hasFocus() ) {
  70         QPainter p( this );
  71         QPen tmp = p.pen();
  72         p.setPen( palette().color( QPalette::Disabled, QPalette::Text ) );
  73         QRect cr = contentsRect();
  74         // Add two pixel margin on the left side
  75         cr.setLeft( cr.left() + 3 );
  76         p.drawText( cr, Qt::AlignLeft | Qt::AlignVCenter, mClickMessage );
  77         p.setPen( tmp );
  78         p.end();
  79     }
  80 }
  81
  82 void ClickLineEdit::dropEvent( QDropEvent *ev )
  83 {
  84     mDrawClickMsg = false;
  85     QLineEdit::dropEvent( ev );
  86 }
  87
  88 void ClickLineEdit::focusInEvent( QFocusEvent *ev )
  89 {
  90     if ( mDrawClickMsg == true ) {
  91         mDrawClickMsg = false;
  92         repaint();
  93     }
  94     QLineEdit::focusInEvent( ev );
  95 }
  96
  97 void ClickLineEdit::focusOutEvent( QFocusEvent *ev )
  98 {
  99     if ( text().isEmpty() ) {
 100         mDrawClickMsg = true;
 101         repaint();
 102     }
 103     QLineEdit::focusOutEvent( ev );
 104 }
 105
 106 QVLCFramelessButton::QVLCFramelessButton( QWidget *parent )
 107   : QPushButton( parent )
 108 {
 109     setSizePolicy( QSizePolicy::Preferred, QSizePolicy::Preferred );
 110 }
 111
 112 void QVLCFramelessButton::paintEvent( QPaintEvent * event )
 113 {
 114     QPainter painter( this );
 115     QPixmap pix = icon().pixmap( size() );
 116     QPoint pos( (width() - pix.width()) / 2, (height() - pix.height()) / 2 );
 117     painter.drawPixmap( QRect( pos.x(), pos.y(), pix.width(), pix.height() ), pix );
 118 }
 119
 120 QSize QVLCFramelessButton::sizeHint() const
 121 {
 122     return iconSize();
 123 }
 124
 125 SearchLineEdit::SearchLineEdit( QWidget *parent ) : QLineEdit( parent )
 126 {
 127     clearButton = new QVLCFramelessButton( this );
 128     clearButton->setIcon( QIcon( ":/toolbar/clear" ) );
 129     clearButton->setIconSize( QSize( 16, 16 ) );
 130     clearButton->setCursor( Qt::ArrowCursor );
 131     clearButton->setToolTip( qfu(vlc_pgettext("Tooltip|Clear", "Clear")) );
 132     clearButton->hide();
 133
 134     CONNECT( clearButton, clicked(), this, clear() );
 135
 136     int frameWidth = style()->pixelMetric( QStyle::PM_DefaultFrameWidth, 0, this );
 137
 138     QFontMetrics metrics( font() );
 139     QString styleSheet = QString( "min-height: %1px; "
 140                                   "padding-top: 1px; "
 141                                   "padding-bottom: 1px; "
 142                                   "padding-right: %2px;" )
 143                                   .arg( metrics.height() + ( 2 * frameWidth ) )
 144                                   .arg( clearButton->sizeHint().width() + 1 );
 145     setStyleSheet( styleSheet );
 146
 147     setMessageVisible( true );
 148
 149     CONNECT( this, textEdited( const QString& ),
 150              this, updateText( const QString& ) );
 151 }
 152
 153 void SearchLineEdit::clear()
 154 {
 155     setText( QString() );
 156     clearButton->hide();
 157     setMessageVisible( true );
 158 }
 159
 160 void SearchLineEdit::setMessageVisible( bool on )
 161 {
 162     message = on;
 163     repaint();
 164     return;
 165 }
 166
 167 void SearchLineEdit::updateText( const QString& text )
 168 {
 169     clearButton->setVisible( !text.isEmpty() );
 170 }
 171
 172 void SearchLineEdit::resizeEvent ( QResizeEvent * event )
 173 {
 174   QLineEdit::resizeEvent( event );
 175   int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth,0,this);
 176   clearButton->resize( clearButton->sizeHint().width(), height() );
 177   clearButton->move( width() - clearButton->width() - frameWidth, 0 );
 178 }
 179
 180 void SearchLineEdit::focusInEvent( QFocusEvent *event )
 181 {
 182   if( message )
 183   {
 184       setMessageVisible( false );
 185   }
 186   QLineEdit::focusInEvent( event );
 187 }
 188
 189 void SearchLineEdit::focusOutEvent( QFocusEvent *event )
 190 {
 191   if( text().isEmpty() )
 192   {
 193       setMessageVisible( true );
 194   }
 195   QLineEdit::focusOutEvent( event );
 196 }
 197
 198 void SearchLineEdit::paintEvent( QPaintEvent *event )
 199 {
 200   QLineEdit::paintEvent( event );
 201   if( !message ) return;
 202   QStyleOption option;
 203   option.initFrom( this );
 204   QRect rect = style()->subElementRect( QStyle::SE_LineEditContents, &option, this )
 205                   .adjusted( 3, 0, clearButton->width() + 1, 0 );
 206   QPainter painter( this );
 207   painter.setPen( palette().color( QPalette::Disabled, QPalette::Text ) );
 208   painter.drawText( rect, Qt::AlignLeft | Qt::AlignVCenter, qtr( I_PL_FILTER ) );
 209 }
 210
 211
 212 QVLCElidingLabel::QVLCElidingLabel( const QString &s, Qt::TextElideMode mode, QWidget * parent )
 213   : elideMode( mode ), QLabel( s, parent )
 214 { }
 215
 216 void QVLCElidingLabel::setElideMode( Qt::TextElideMode mode )
 217 {
 218     elideMode = mode;
 219     repaint();
 220 }
 221
 222 void QVLCElidingLabel::paintEvent( QPaintEvent * event )
 223 {
 224     QPainter p( this );
 225     int space = frameWidth() + margin();
 226     QRect r = rect().adjusted( space, space, -space, -space );
 227     p.drawText( r, fontMetrics().elidedText( text(), elideMode, r.width() ), alignment() );
 228 }
 229
 230 /***************************************************************************
 231  * Hotkeys converters
 232  ***************************************************************************/
 233 int qtKeyModifiersToVLC( QInputEvent* e )
 234 {
 235     int i_keyModifiers = 0;
 236     if( e->modifiers() & Qt::ShiftModifier ) i_keyModifiers |= KEY_MODIFIER_SHIFT;
 237     if( e->modifiers() & Qt::AltModifier ) i_keyModifiers |= KEY_MODIFIER_ALT;
 238     if( e->modifiers() & Qt::ControlModifier ) i_keyModifiers |= KEY_MODIFIER_CTRL;
 239     if( e->modifiers() & Qt::MetaModifier ) i_keyModifiers |= KEY_MODIFIER_META;
 240     return i_keyModifiers;
 241 }
 242
 243 typedef struct
 244 {
 245     int      qt;
 246     uint32_t vlc;
 247 } vlc_qt_key_t;
 248
 249 static const vlc_qt_key_t keys[] =
 250 {
 251     { Qt::Key_Escape,                KEY_ESC },
 252     { Qt::Key_Tab,                   '\t', },
 253     // Qt::Key_Backtab
 254     { Qt::Key_Backspace,             '\b' },
 255     { Qt::Key_Return,                '\r' },
 256     { Qt::Key_Enter,                 '\r' }, // numeric pad
 257     { Qt::Key_Insert,                KEY_INSERT },
 258     { Qt::Key_Delete,                KEY_DELETE },
 259     // Qt::Key_Pause
 260     // Qt::Key_Print
 261     // Qt::Key_SysReq
 262     // Qt::Key_Clear
 263     { Qt::Key_Home,                  KEY_HOME },
 264     { Qt::Key_End,                   KEY_END },
 265     { Qt::Key_Left,                  KEY_LEFT },
 266     { Qt::Key_Up,                    KEY_UP },
 267     { Qt::Key_Right,                 KEY_RIGHT },
 268     { Qt::Key_Down,                  KEY_DOWN },
 269     { Qt::Key_PageUp,                KEY_PAGEUP },
 270     { Qt::Key_PageDown,              KEY_PAGEDOWN },
 271     // Qt::Key_Shift
 272     // Qt::Key_Control
 273     // Qt::Key_Meta
 274     // Qt::Key_Alt
 275     // Qt::Key_CapsLock
 276     // Qt::Key_NumLock
 277     // Qt::Key_ScrollLock
 278     /* F1 - F35 */
 279     // Qt::Key_Super_L
 280     // Qt::Key_Super_R
 281     { Qt::Key_Menu,                  KEY_MENU },
 282     // Qt::Key_Hyper_L
 283     // Qt::Key_Hyper_R
 284     // Qt::Key_Help
 285     // Qt::Key_Direction_L
 286     // Qt::Key_Direction_R
 287
 288     // Qt::Key_Multi_key
 289     // Qt::Key_Codeinput
 290     // Qt::Key_SingleCandidate
 291     // Qt::Key_MultipleCandidate
 292     // Qt::Key_PreviousCandidate
 293     // Qt::Key_Mode_switch
 294     // Qt::Key_Kanji
 295     // Qt::Key_Muhenkan
 296     // Qt::Key_Henkan
 297     // Qt::Key_Romaji
 298     // Qt::Key_Hiragana
 299     // Qt::Key_Katakana
 300     // Qt::Key_Hiragana_Katakana
 301     // Qt::Key_Zenkaku
 302     // Qt::Key_Hankaku
 303     // Qt::Key_Zenkaku_Hankaku
 304     // Qt::Key_Touroku
 305     // Qt::Key_Massyo
 306     // Qt::Key_Kana_Lock
 307     // Qt::Key_Kana_Shift
 308     // Qt::Key_Eisu_Shift
 309     // Qt::Key_Eisu_toggle
 310     // Qt::Key_Hangul
 311     // Qt::Key_Hangul_Start
 312     // Qt::Key_Hangul_End
 313     // Qt::Key_Hangul_Hanja
 314     // Qt::Key_Hangul_Jamo
 315     // Qt::Key_Hangul_Romaja
 316     // Qt::Key_Hangul_Jeonja
 317     // Qt::Key_Hangul_Banja
 318     // Qt::Key_Hangul_PreHanja
 319     // Qt::Key_Hangul_PostHanja
 320     // Qt::Key_Hangul_Special
 321     // Qt::Key_Dead_Grave
 322     // Qt::Key_Dead_Acute
 323     // Qt::Key_Dead_Circumflex
 324     // Qt::Key_Dead_Tilde
 325     // Qt::Key_Dead_Macron
 326     // Qt::Key_Dead_Breve
 327     // Qt::Key_Dead_Abovedot
 328     // Qt::Key_Dead_Diaeresis
 329     // Qt::Key_Dead_Abovering
 330     // Qt::Key_Dead_Doubleacute
 331     // Qt::Key_Dead_Caron
 332     // Qt::Key_Dead_Cedilla
 333     // Qt::Key_Dead_Ogonek
 334     // Qt::Key_Dead_Iota
 335     // Qt::Key_Dead_Voiced_Sound
 336     // Qt::Key_Dead_Semivoiced_Sound
 337     // Qt::Key_Dead_Belowdot
 338     // Qt::Key_Dead_Hook
 339     // Qt::Key_Dead_Horn
 340     { Qt::Key_Back,                  KEY_BROWSER_BACK },
 341     { Qt::Key_Forward,               KEY_BROWSER_FORWARD },
 342     { Qt::Key_Stop,                  KEY_BROWSER_STOP },
 343     { Qt::Key_Refresh,               KEY_BROWSER_REFRESH },
 344     { Qt::Key_VolumeDown,            KEY_VOLUME_DOWN },
 345     { Qt::Key_VolumeMute,            KEY_VOLUME_MUTE },
 346     { Qt::Key_VolumeUp,              KEY_VOLUME_UP },
 347     // Qt::Key_BassBoost
 348     // Qt::Key_BassUp
 349     // Qt::Key_BassDown
 350     // Qt::Key_TrebleUp
 351     // Qt::Key_TrebleDown
 352     { Qt::Key_MediaPlay,             KEY_MEDIA_PLAY_PAUSE },
 353     { Qt::Key_MediaStop,             KEY_MEDIA_STOP },
 354     { Qt::Key_MediaPrevious,         KEY_MEDIA_PREV_TRACK },
 355     { Qt::Key_MediaNext,             KEY_MEDIA_NEXT_TRACK },
 356     // Qt::Key_MediaRecord
 357     { Qt::Key_HomePage,              KEY_BROWSER_HOME },
 358     { Qt::Key_Favorites,             KEY_BROWSER_FAVORITES },
 359     { Qt::Key_Search,                KEY_BROWSER_SEARCH },
 360     // Qt::Key_Standby
 361     // Qt::Key_OpenUrl
 362     // Qt::Key_LaunchMail
 363     // Qt::Key_LaunchMedia
 364     /* Qt::Key_Launch0 through Qt::Key_LaunchF */
 365     // Qt::Key_MediaLast
 366 };
 367
 368 static int keycmp( const void *a, const void *b )
 369 {
 370     const int *q = (const int *)a;
 371     const vlc_qt_key_t *m = (const vlc_qt_key_t *)b;
 372
 373     return *q - m->qt;
 374 }
 375
 376 int qtEventToVLCKey( QKeyEvent *e )
 377 {
 378     int qtk = e->key();
 379     uint32_t i_vlck = 0;
 380
 381     if( qtk <= 0xff )
 382         /* VLC and X11 use lowercase whereas Qt uses uppercase */
 383 #if defined( __STDC_ISO_10646__ ) || defined( _WIN32 )
 384         i_vlck = towlower( qtk );
 385 #else
 386 # error FIXME
 387 #endif
 388     else /* Qt and X11 go to F35, but VLC stops at F12 */
 389     if( qtk >= Qt::Key_F1 && qtk <= Qt::Key_F12 )
 390         i_vlck = qtk - Qt::Key_F1 + KEY_F1;
 391     else
 392     {
 393         const vlc_qt_key_t *map;
 394
 395         map = (const vlc_qt_key_t *)
 396               bsearch( &qtk, (const void *)keys, sizeof(keys)/sizeof(keys[0]),
 397                        sizeof(*keys), keycmp );
 398         if( map != NULL )
 399             i_vlck = map->vlc;
 400     }
 401
 402     /* Handle modifiers */
 403     i_vlck |= qtKeyModifiersToVLC( e );
 404     return i_vlck;
 405 }
 406
 407 int qtWheelEventToVLCKey( QWheelEvent *e )
 408 {
 409     int i_vlck = 0;
 410     /* Handle modifiers */
 411     i_vlck |= qtKeyModifiersToVLC( e );
 412     if ( e->delta() > 0 )
 413         i_vlck |= KEY_MOUSEWHEELUP;
 414     else
 415         i_vlck |= KEY_MOUSEWHEELDOWN;
 416     return i_vlck;
 417 }
 418
 419 QString VLCKeyToString( int val )
 420 {
 421     char *base = KeyToString (val & ~KEY_MODIFIER);
 422
 423     QString r = "";
 424     if( val & KEY_MODIFIER_CTRL )
 425         r+= qfu( "Ctrl+" );
 426     if( val & KEY_MODIFIER_ALT )
 427         r+= qfu( "Alt+" );
 428     if( val & KEY_MODIFIER_SHIFT )
 429         r+= qfu( "Shift+" );
 430
 431     if (base)
 432     {
 433         r += qfu( base );
 434         free( base );
 435     }
 436     else
 437         r += qtr( "Unset" );
 438     return r;
 439 }
 440