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
  20 #include <qevent.h>
  21 #include <qpainter.h>
  22
  23
  24 namespace {
  25
  26 /// return the LyX key state from Qt's
  27 key_modifier::state q_key_state(Qt::ButtonState state)
  28 {
  29         key_modifier::state k = key_modifier::none;
  30         if (state & Qt::ControlButton)
  31                 k |= key_modifier::ctrl;
  32         if (state & Qt::ShiftButton)
  33                 k |= key_modifier::shift;
  34         if (state & Qt::AltButton)
  35                 k |= key_modifier::alt;
  36         return k;
  37 }
  38
  39 /// return the LyX mouse button state from Qt's
  40 mouse_button::state q_button_state(Qt::ButtonState button)
  41 {
  42         mouse_button::state b = mouse_button::none;
  43         switch (button) {
  44                 case Qt::LeftButton:
  45                         b = mouse_button::button1;
  46                         break;
  47                 case Qt::MidButton:
  48                         b = mouse_button::button2;
  49                         break;
  50                 case Qt::RightButton:
  51                         b = mouse_button::button3;
  52                         break;
  53                 default:
  54                         break;
  55         }
  56         return b;
  57 }
  58
  59
  60 /// return the LyX mouse button state from Qt's
  61 mouse_button::state q_motion_state(Qt::ButtonState state)
  62 {
  63         mouse_button::state b = mouse_button::none;
  64         if (state & Qt::LeftButton)
  65                 b |= mouse_button::button1;
  66         if (state & Qt::MidButton)
  67                 b |= mouse_button::button2;
  68         if (state & Qt::RightButton)
  69                 b |= mouse_button::button3;
  70         return b;
  71 }
  72
  73 } // namespace anon
  74
  75
  76 QContentPane::QContentPane(QWorkArea * parent)
  77         : QWidget(parent, "content_pane", WRepaintNoErase),
  78         wa_(parent)
  79 {
  80         setFocusPolicy(QWidget::WheelFocus);
  81         setFocus();
  82
  83         // stupid moc strikes again
  84         connect(wa_->scrollbar_, SIGNAL(valueChanged(int)),
  85                 this, SLOT(scrollBarChanged(int)));
  86
  87 }
  88
  89
  90 void QContentPane::scrollBarChanged(int val)
  91 {
  92         wa_->scrollDocView(val);
  93 }
  94
  95
  96 void QContentPane::mousePressEvent(QMouseEvent * e)
  97 {
  98         wa_->workAreaButtonPress(e->x(), e->y(), q_button_state(e->button()));
  99 }
 100
 101
 102 void QContentPane::mouseReleaseEvent(QMouseEvent * e)
 103 {
 104         wa_->workAreaButtonRelease(e->x(), e->y(), q_button_state(e->button()));
 105 }
 106
 107
 108 void QContentPane::mouseMoveEvent(QMouseEvent * e)
 109 {
 110         wa_->workAreaMotionNotify(e->x(), e->y(), q_motion_state(e->state()));
 111 }
 112
 113
 114 void QContentPane::keyPressEvent(QKeyEvent * e)
 115 {
 116         char const * tmp = e->text().latin1();
 117         string const text = tmp ? tmp : "";
 118         lyxerr[Debug::GUI] << "key text " << text << endl;
 119         QLyXKeySym * sym = new QLyXKeySym();
 120         sym->set(e->key(), e->text());
 121         wa_->workAreaKeyPress(LyXKeySymPtr(sym), q_key_state(e->state()));
 122 }
 123
 124
 125 void QContentPane::mouseDoubleClickEvent(QMouseEvent * e)
 126 {
 127         wa_->workAreaDoubleClick(e->x(), e->y(), q_button_state(e->state()));
 128         // FIXME: triple click
 129 }
 130
 131
 132 void QContentPane::resizeEvent(QResizeEvent *)
 133 {
 134         if (!pixmap_.get()) {
 135                 pixmap_.reset(new QPixmap(width(), height()));
 136         }
 137
 138         pixmap_->resize(width(), height());
 139         wa_->workAreaResize();
 140 }
 141
 142
 143 void QContentPane::paintEvent(QPaintEvent * e)
 144 {
 145         if (!pixmap_.get()) {
 146                 pixmap_.reset(new QPixmap(width(), height()));
 147                 wa_->workAreaResize();
 148                 return;
 149         }
 150
 151         QRect r(e->rect());
 152
 153         lyxerr[Debug::GUI] << "repainting " << r.x()
 154                 << "," << r.y() << " " << r.width()
 155                 << "," << r.height() << endl;
 156         QPainter q(this);
 157         q.drawPixmap(QPoint(r.x(), r.y()),
 158                 *pixmap_.get(), r);
 159 }