src/frontends/qt2/QContentPane.C

   1 /**
   2  * \file QContentPane.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  *
   8  * Full author contact details are available in file CREDITS
   9  */
  10
  11 #include <config.h>
  12
  13 #ifdef __GNUG__
  14 #pragma implementation
  15 #endif
  16
  17 #include "debug.h"
  18
  19 #include "QWorkArea.h"
  20 #include "QLyXKeySym.h"
  21 #include "funcrequest.h"
  22
  23 #include <qevent.h>
  24 #include <qpainter.h>
  25 #include <qtimer.h>
  26 #include <qapplication.h>
  27
  28 using std::endl;
  29
  30 namespace {
  31
  32 /// return the LyX key state from Qt's
  33 key_modifier::state q_key_state(Qt::ButtonState state)
  34 {
  35         key_modifier::state k = key_modifier::none;
  36         if (state & Qt::ControlButton)
  37                 k |= key_modifier::ctrl;
  38         if (state & Qt::ShiftButton)
  39                 k |= key_modifier::shift;
  40         if (state & Qt::AltButton)
  41                 k |= key_modifier::alt;
  42         return k;
  43 }
  44
  45
  46 /// return the LyX mouse button state from Qt's
  47 mouse_button::state q_button_state(Qt::ButtonState button)
  48 {
  49         mouse_button::state b = mouse_button::none;
  50         switch (button) {
  51                 case Qt::LeftButton:
  52                         b = mouse_button::button1;
  53                         break;
  54                 case Qt::MidButton:
  55                         b = mouse_button::button2;
  56                         break;
  57                 case Qt::RightButton:
  58                         b = mouse_button::button3;
  59                         break;
  60                 default:
  61                         break;
  62         }
  63         return b;
  64 }
  65
  66
  67 /// return the LyX mouse button state from Qt's
  68 mouse_button::state q_motion_state(Qt::ButtonState state)
  69 {
  70         mouse_button::state b = mouse_button::none;
  71         if (state & Qt::LeftButton)
  72                 b |= mouse_button::button1;
  73         if (state & Qt::MidButton)
  74                 b |= mouse_button::button2;
  75         if (state & Qt::RightButton)
  76                 b |= mouse_button::button3;
  77         return b;
  78 }
  79
  80 } // namespace anon
  81
  82
  83 QContentPane::QContentPane(QWorkArea * parent)
  84         : QWidget(parent, "content_pane", WRepaintNoErase),
  85         wa_(parent)
  86 {
  87         setFocusPolicy(QWidget::WheelFocus);
  88         setFocus();
  89
  90         // stupid moc strikes again
  91         connect(wa_->scrollbar_, SIGNAL(valueChanged(int)),
  92                 this, SLOT(scrollBarChanged(int)));
  93
  94 }
  95
  96
  97 void QContentPane::scrollBarChanged(int val)
  98 {
  99         wa_->scrollDocView(val);
 100 }
 101
 102
 103 void QContentPane::mousePressEvent(QMouseEvent * e)
 104 {
 105         if (dc_event_.active && dc_event_ == *e) {
 106                 dc_event_.active = false;
 107                 FuncRequest cmd(LFUN_MOUSE_TRIPLE,
 108                         dc_event_.x, dc_event_.y,
 109                         q_button_state(dc_event_.state));
 110                 wa_->dispatch(cmd);
 111                 return;
 112         }
 113
 114         FuncRequest cmd(LFUN_MOUSE_PRESS, e->x(), e->y(),
 115                         q_button_state(e->button()));
 116         wa_->dispatch(cmd);
 117 }
 118
 119
 120 void QContentPane::mouseReleaseEvent(QMouseEvent * e)
 121 {
 122         FuncRequest cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
 123                         q_button_state(e->button()));
 124         wa_->dispatch(cmd);
 125 }
 126
 127
 128 void QContentPane::mouseMoveEvent(QMouseEvent * e)
 129 {
 130         FuncRequest cmd
 131                 (LFUN_MOUSE_MOTION, e->x(), e->y(), q_motion_state(e->state()));
 132         wa_->dispatch(cmd);
 133 }
 134
 135
 136 void QContentPane::wheelEvent(QWheelEvent * e)
 137 {
 138         wa_->scrollbar_->setValue(wa_->scrollbar_->value() - e->delta());
 139 }
 140
 141
 142 void QContentPane::keyPressEvent(QKeyEvent * e)
 143 {
 144         lyxerr[Debug::KEY] << "Press key " << e->key()
 145                 << " text \"" << (e->text().isEmpty() ? "none" : e->text().latin1())
 146                 << "\", ascii \"" << e->ascii() << "\"" << endl;
 147         QLyXKeySym * sym = new QLyXKeySym();
 148         sym->set(e);
 149         wa_->workAreaKeyPress(LyXKeySymPtr(sym), q_key_state(e->state()));
 150 }
 151
 152
 153 void QContentPane::doubleClickTimeout()
 154 {
 155         if (!dc_event_.active)
 156                 return;
 157
 158         dc_event_.active = false;
 159
 160         FuncRequest cmd(LFUN_MOUSE_DOUBLE,
 161                 dc_event_.x, dc_event_.y,
 162                 q_button_state(dc_event_.state));
 163         wa_->dispatch(cmd);
 164 }
 165
 166
 167 void QContentPane::mouseDoubleClickEvent(QMouseEvent * e)
 168 {
 169         dc_event_ = double_click(e);
 170
 171         // doubleClickInterval() is just too long.
 172         QTimer::singleShot(int(QApplication::doubleClickInterval() / 1.5),
 173                 this, SLOT(doubleClickTimeout()));
 174 }
 175
 176
 177 void QContentPane::resizeEvent(QResizeEvent *)
 178 {
 179         if (!pixmap_.get()) {
 180                 pixmap_.reset(new QPixmap(width(), height()));
 181         }
 182
 183         pixmap_->resize(width(), height());
 184         wa_->workAreaResize();
 185 }
 186
 187
 188 void QContentPane::paintEvent(QPaintEvent * e)
 189 {
 190         if (!pixmap_.get()) {
 191                 pixmap_.reset(new QPixmap(width(), height()));
 192                 wa_->workAreaResize();
 193                 return;
 194         }
 195
 196         QRect r(e->rect());
 197
 198         lyxerr[Debug::GUI] << "repainting " << r.x()
 199                 << "," << r.y() << " " << r.width()
 200                 << "," << r.height() << endl;
 201         QPainter q(this);
 202         q.drawPixmap(QPoint(r.x(), r.y()),
 203                 *pixmap_.get(), r);
 204 }