qt/ibus-input-context.cpp

   1 #include "ibus-input-context.h"
   2 #include "ibus-client.h"
   3 #include <QtDebug>
   4 #include <QInputMethodEvent>
   5 #include <QTextCharFormat>
   6
   7 typedef QInputMethodEvent::Attribute QAttribute;
   8
   9 IBusInputContext::IBusInputContext (QObject *parent, IBusClient *client, QString &ic)
  10         : QInputContext (parent), client (client), ic (ic), preedit_visible (false)
  11 {
  12 }
  13
  14 IBusInputContext::~IBusInputContext ()
  15 {
  16         client->releaseInputContext (this);
  17 }
  18
  19 bool
  20 IBusInputContext::filterEvent (const QEvent *event)
  21 {
  22 #ifndef Q_WS_X11
  23         if (client->filterEvent (this, event))
  24                 return true;
  25         return QInputContext::filterEvent (event);
  26 #else
  27         return QInputContext::filterEvent (event);
  28 #endif
  29 }
  30
  31 QFont
  32 IBusInputContext::font () const
  33 {
  34         return QInputContext::font ();
  35 }
  36
  37 QString
  38 IBusInputContext::identifierName ()
  39 {
  40         return QString ("ibus");
  41 }
  42
  43 QString
  44 IBusInputContext::language()
  45 {
  46         return QString ("");
  47 }
  48
  49 void
  50 IBusInputContext::mouseHandler (int x, QMouseEvent *event)
  51 {
  52         client->mouseHandler (this, x, event);
  53         QInputContext::mouseHandler (x, event);
  54 }
  55
  56 void
  57 IBusInputContext::reset()
  58 {
  59         client->reset (this);
  60 }
  61
  62 void
  63 IBusInputContext::update ()
  64 {
  65         QWidget *widget;
  66
  67         if ((widget = focusWidget ()) == NULL)
  68                 return;
  69
  70         QRect rect = widget->inputMethodQuery(Qt::ImMicroFocus).toRect ();
  71 #if 0
  72         QFont font = widget->inputMethodQuery(Qt::ImFont).value <QFont> ();
  73         qDebug () << rect << preedit_string << preedit_cursor_pos;
  74
  75         QFontMetrics fm(font);
  76         int textWidth = fm.width (preedit_string.left (preedit_cursor_pos));
  77         rect.translate (textWidth, 0);
  78 #endif
  79         QPoint topleft = widget->mapToGlobal(QPoint(0,0));
  80         rect.translate (topleft);
  81         client->setCursorLocation (this, rect);
  82
  83         // value = widget->inputMethodQuery(Qt::ImFont);
  84         // qDebug () << value;
  85         // value = widget->inputMethodQuery(Qt::ImCursorPosition);
  86         // qDebug () << value;
  87         // value = widget->inputMethodQuery(Qt::ImSurroundingText);
  88         // qDebug () << value;
  89         // value = widget->inputMethodQuery(Qt::ImCurrentSelection);
  90         // qDebug () << value;
  91 }
  92
  93 bool
  94 IBusInputContext::isComposing() const
  95 {
  96         return (!preedit_string.isEmpty ()) && preedit_visible;
  97 }
  98
  99 void
 100 IBusInputContext::setFocusWidget (QWidget *widget)
 101 {
 102         // qDebug () << "setFocusWidget (" << widget << ")";
 103         QInputContext::setFocusWidget (widget);
 104         update ();
 105 }
 106
 107 void
 108 IBusInputContext::widgetDestroyed (QWidget *widget)
 109 {
 110         QInputContext::widgetDestroyed (widget);
 111         update ();
 112 }
 113
 114 #ifdef Q_WS_X11
 115 bool
 116 IBusInputContext::x11FilterEvent (QWidget *keywidget, XEvent *xevent)
 117 {
 118         if (client->x11FilterEvent (this, keywidget, xevent))
 119                 return true;
 120         return QInputContext::x11FilterEvent (keywidget, xevent);
 121 }
 122 #endif
 123
 124 void
 125 IBusInputContext::setIC (QString ic)
 126 {
 127         this->ic = ic;
 128 }
 129
 130 QString
 131 IBusInputContext::getIC ()
 132 {
 133         return ic;
 134 }
 135
 136 void
 137 IBusInputContext::commitString (QString text)
 138 {
 139         QInputMethodEvent event;
 140         event.setCommitString (text);
 141         sendEvent (event);
 142         update ();
 143 }
 144
 145 void
 146 IBusInputContext::updatePreedit (QString text, QList <QList <quint32> > attr_list, int cursor_pos, bool show)
 147 {
 148         // qDebug () << text << cursor_pos << show;
 149         QList <QAttribute> qattrs;
 150
 151         if (show) {
 152                 // append cursor pos
 153                 qattrs.append (QAttribute (QInputMethodEvent::Cursor, cursor_pos, true, 0));
 154
 155                 // append attributes
 156                 for (QList <QList <quint32> >::iterator it = attr_list.begin (); it != attr_list.end(); ++ it) {
 157
 158                         QList <quint32> attr = *it;
 159                         QTextCharFormat format;
 160
 161                         switch (attr[0]) {
 162                         case 1: // underline
 163                                 format.setUnderlineStyle (QTextCharFormat::SingleUnderline);
 164                                 break;
 165                         case 2: // foreground
 166                                 format.setForeground (QBrush (QColor (attr[1])));
 167                                 break;
 168                         case 3: // background
 169                                 format.setBackground (QBrush (QColor (attr[1])));
 170                                 break;
 171                         default:
 172                                 break;
 173                         }
 174
 175                         qattrs.append (QAttribute (QInputMethodEvent::TextFormat, attr[2], attr[3] - attr[2], QVariant (format)));
 176                         // qDebug () << attr[0] << attr[2] << attr[3] - attr[2];
 177                 }
 178         }
 179         else {
 180                 qattrs.append (QAttribute (QInputMethodEvent::Cursor, 0, true, 0));
 181                 text = "";
 182                 cursor_pos = 0;
 183         }
 184
 185         preedit_string = text;
 186         preedit_visible = show;
 187         preedit_cursor_pos = cursor_pos;
 188
 189         QInputMethodEvent event (text, qattrs);
 190         sendEvent (event);
 191         update ();
 192 }