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