src/frontends/qt2/QContentPane.C

   1 /**
   2  * \file QContentPane.C
   3  * Copyright 1995-2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author John Levon <moz@compsoc.man.ac.uk>
   7  */
   8
   9 #include <config.h>
  10
  11 #ifdef __GNUG__
  12 #pragma implementation
  13 #endif
  14
  15 #include "debug.h"
  16
  17 #include "QWorkArea.h"
  18 #include "QLyXKeySym.h"
  19 #include "funcrequest.h"
  20
  21 #include <qevent.h>
  22 #include <qpainter.h>
  23
  24 using std::endl;
  25
  26 namespace {
  27
  28 /// return the LyX key state from Qt's
  29 key_modifier::state q_key_state(Qt::ButtonState state)
  30 {
  31         key_modifier::state k = key_modifier::none;
  32         if (state & Qt::ControlButton)
  33                 k |= key_modifier::ctrl;
  34         if (state & Qt::ShiftButton)
  35                 k |= key_modifier::shift;
  36         if (state & Qt::AltButton)
  37                 k |= key_modifier::alt;
  38         return k;
  39 }
  40
  41 /// return the LyX mouse button state from Qt's
  42 mouse_button::state q_button_state(Qt::ButtonState button)
  43 {
  44         mouse_button::state b = mouse_button::none;
  45         switch (button) {
  46                 case Qt::LeftButton:
  47                         b = mouse_button::button1;
  48                         break;
  49                 case Qt::MidButton:
  50                         b = mouse_button::button2;
  51                         break;
  52                 case Qt::RightButton:
  53                         b = mouse_button::button3;
  54                         break;
  55                 default:
  56                         break;
  57         }
  58         return b;
  59 }
  60
  61
  62 /// return the LyX mouse button state from Qt's
  63 mouse_button::state q_motion_state(Qt::ButtonState state)
  64 {
  65         mouse_button::state b = mouse_button::none;
  66         if (state & Qt::LeftButton)
  67                 b |= mouse_button::button1;
  68         if (state & Qt::MidButton)
  69                 b |= mouse_button::button2;
  70         if (state & Qt::RightButton)
  71                 b |= mouse_button::button3;
  72         return b;
  73 }
  74
  75 } // namespace anon
  76
  77
  78 QContentPane::QContentPane(QWorkArea * parent)
  79         : QWidget(parent, "content_pane", WRepaintNoErase),
  80         wa_(parent)
  81 {
  82         setFocusPolicy(QWidget::WheelFocus);
  83         setFocus();
  84
  85         // stupid moc strikes again
  86         connect(wa_->scrollbar_, SIGNAL(valueChanged(int)),
  87                 this, SLOT(scrollBarChanged(int)));
  88
  89 }
  90
  91
  92 void QContentPane::scrollBarChanged(int val)
  93 {
  94         wa_->scrollDocView(val);
  95 }
  96
  97
  98 void QContentPane::mousePressEvent(QMouseEvent * e)
  99 {
 100         FuncRequest cmd
 101                 (LFUN_MOUSE_PRESS, e->x(), e->y(), q_button_state(e->button()));
 102         wa_->dispatch(cmd);
 103 }
 104
 105
 106 void QContentPane::mouseReleaseEvent(QMouseEvent * e)
 107 {
 108         FuncRequest cmd
 109                 (LFUN_MOUSE_RELEASE, e->x(), e->y(), q_button_state(e->button()));
 110         wa_->dispatch(cmd);
 111 }
 112
 113
 114 void QContentPane::mouseMoveEvent(QMouseEvent * e)
 115 {
 116         FuncRequest cmd
 117                 (LFUN_MOUSE_RELEASE, e->x(), e->y(), q_motion_state(e->button()));
 118         wa_->dispatch(cmd);
 119 }
 120
 121
 122 void QContentPane::keyPressEvent(QKeyEvent * e)
 123 {
 124         lyxerr[Debug::KEY] << "Press key " << e->key()
 125                 << " text \"" << (e->text().isEmpty() ? "none" : e->text().latin1())
 126                 << "\", ascii \"" << e->ascii() << "\"" << endl;
 127         QLyXKeySym * sym = new QLyXKeySym();
 128         sym->set(e);
 129         wa_->workAreaKeyPress(LyXKeySymPtr(sym), q_key_state(e->state()));
 130 }
 131
 132
 133 void QContentPane::mouseDoubleClickEvent(QMouseEvent * e)
 134 {
 135         FuncRequest cmd
 136                 (LFUN_MOUSE_DOUBLE, e->x(), e->y(), q_button_state(e->button()));
 137         wa_->dispatch(cmd);
 138         // FIXME: triple click
 139 }
 140
 141
 142 void QContentPane::resizeEvent(QResizeEvent *)
 143 {
 144         if (!pixmap_.get()) {
 145                 pixmap_.reset(new QPixmap(width(), height()));
 146         }
 147
 148         pixmap_->resize(width(), height());
 149         wa_->workAreaResize();
 150 }
 151
 152
 153 void QContentPane::paintEvent(QPaintEvent * e)
 154 {
 155         if (!pixmap_.get()) {
 156                 pixmap_.reset(new QPixmap(width(), height()));
 157                 wa_->workAreaResize();
 158                 return;
 159         }
 160
 161         QRect r(e->rect());
 162
 163         lyxerr[Debug::GUI] << "repainting " << r.x()
 164                 << "," << r.y() << " " << r.width()
 165                 << "," << r.height() << endl;
 166         QPainter q(this);
 167         q.drawPixmap(QPoint(r.x(), r.y()),
 168                 *pixmap_.get(), r);
 169 }