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 /// return the LyX mouse button state from Qt's
  46 mouse_button::state q_button_state(Qt::ButtonState button)
  47 {
  48         mouse_button::state b = mouse_button::none;
  49         switch (button) {
  50                 case Qt::LeftButton:
  51                         b = mouse_button::button1;
  52                         break;
  53                 case Qt::MidButton:
  54                         b = mouse_button::button2;
  55                         break;
  56                 case Qt::RightButton:
  57                         b = mouse_button::button3;
  58                         break;
  59                 default:
  60                         break;
  61         }
  62         return b;
  63 }
  64
  65
  66 /// return the LyX mouse button state from Qt's
  67 mouse_button::state q_motion_state(Qt::ButtonState state)
  68 {
  69         mouse_button::state b = mouse_button::none;
  70         if (state & Qt::LeftButton)
  71                 b |= mouse_button::button1;
  72         if (state & Qt::MidButton)
  73                 b |= mouse_button::button2;
  74         if (state & Qt::RightButton)
  75                 b |= mouse_button::button3;
  76         return b;
  77 }
  78
  79 } // namespace anon
  80
  81
  82 QContentPane::QContentPane(QWorkArea * parent)
  83         : QWidget(parent, "content_pane", WRepaintNoErase),
  84         wa_(parent)
  85 {
  86         setFocusPolicy(QWidget::WheelFocus);
  87         setFocus();
  88
  89         // stupid moc strikes again
  90         connect(wa_->scrollbar_, SIGNAL(valueChanged(int)),
  91                 this, SLOT(scrollBarChanged(int)));
  92
  93 }
  94
  95
  96 void QContentPane::scrollBarChanged(int val)
  97 {
  98         wa_->scrollDocView(val);
  99 }
 100
 101
 102 void QContentPane::mousePressEvent(QMouseEvent * e)
 103 {
 104         if (dc_event_.active && dc_event_ == *e) {
 105                 dc_event_.active = false;
 106                 FuncRequest cmd(LFUN_MOUSE_TRIPLE,
 107                         dc_event_.x, dc_event_.y,
 108                         q_button_state(dc_event_.state));
 109                 wa_->dispatch(cmd);
 110                 return;
 111         }
 112
 113         FuncRequest cmd
 114                 (LFUN_MOUSE_PRESS, e->x(), e->y(), q_button_state(e->button()));
 115         wa_->dispatch(cmd);
 116 }
 117
 118
 119 void QContentPane::mouseReleaseEvent(QMouseEvent * e)
 120 {
 121         FuncRequest cmd
 122                 (LFUN_MOUSE_RELEASE, e->x(), e->y(), q_button_state(e->button()));
 123         wa_->dispatch(cmd);
 124 }
 125
 126
 127 void QContentPane::mouseMoveEvent(QMouseEvent * e)
 128 {
 129         FuncRequest cmd
 130                 (LFUN_MOUSE_MOTION, e->x(), e->y(), q_motion_state(e->state()));
 131         wa_->dispatch(cmd);
 132 }
 133
 134
 135 void QContentPane::keyPressEvent(QKeyEvent * e)
 136 {
 137         lyxerr[Debug::KEY] << "Press key " << e->key()
 138                 << " text \"" << (e->text().isEmpty() ? "none" : e->text().latin1())
 139                 << "\", ascii \"" << e->ascii() << "\"" << endl;
 140         QLyXKeySym * sym = new QLyXKeySym();
 141         sym->set(e);
 142         wa_->workAreaKeyPress(LyXKeySymPtr(sym), q_key_state(e->state()));
 143 }
 144
 145
 146 void QContentPane::doubleClickTimeout()
 147 {
 148         if (!dc_event_.active)
 149                 return;
 150
 151         dc_event_.active = false;
 152
 153         FuncRequest cmd(LFUN_MOUSE_DOUBLE,
 154                 dc_event_.x, dc_event_.y,
 155                 q_button_state(dc_event_.state));
 156         wa_->dispatch(cmd);
 157 }
 158
 159
 160 void QContentPane::mouseDoubleClickEvent(QMouseEvent * e)
 161 {
 162         dc_event_ = double_click(e);
 163
 164         // doubleClickInterval() is just too long.
 165         QTimer::singleShot(int(QApplication::doubleClickInterval() / 1.5),
 166                 this, SLOT(doubleClickTimeout()));
 167 }
 168
 169
 170 void QContentPane::resizeEvent(QResizeEvent *)
 171 {
 172         if (!pixmap_.get()) {
 173                 pixmap_.reset(new QPixmap(width(), height()));
 174         }
 175
 176         pixmap_->resize(width(), height());
 177         wa_->workAreaResize();
 178 }
 179
 180
 181 void QContentPane::paintEvent(QPaintEvent * e)
 182 {
 183         if (!pixmap_.get()) {
 184                 pixmap_.reset(new QPixmap(width(), height()));
 185                 wa_->workAreaResize();
 186                 return;
 187         }
 188
 189         QRect r(e->rect());
 190
 191         lyxerr[Debug::GUI] << "repainting " << r.x()
 192                 << "," << r.y() << " " << r.width()
 193                 << "," << r.height() << endl;
 194         QPainter q(this);
 195         q.drawPixmap(QPoint(r.x(), r.y()),
 196                 *pixmap_.get(), r);
 197 }