lyx_mirror/src/frontends/qt2/QBrowseBox.C
Angus Leeming 36e03e8a48 A few more compilation fixes.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7690 a592a061-630c-0410-9148-cb99ea01b6c8
2003-09-06 10:16:15 +00:00

305 lines
6.3 KiB
C

/**
* \file QBrowseBox.C
*
* Original file taken from klyx 0.10 sources:
*
* \author Kalle Dalheimer
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include <qpixmap.h>
#include <qpainter.h>
#include <qapplication.h>
#include <qdrawutil.h>
#include <qstyle.h>
#include "QBrowseBox.h"
#include <cmath>
QBrowseBox::QBrowseBox(int rows, int cols, QWidget* parent, const char * name, WFlags f)
: QGridView(parent,name,f)
{
setNumRows(rows);
setNumCols(cols);
pixmaps_ = new QPixmap[rows * cols];
activecell_.setX(-1);
activecell_.setY(-1);
if (style().inherits("QWindowsStyle"))
setFrameStyle(QFrame::WinPanel | QFrame::Raised);
else
setFrameStyle(QFrame::Panel | QFrame::Raised);
setVScrollBarMode(QScrollView::AlwaysOff);
setHScrollBarMode(QScrollView::AlwaysOff);
viewport()->setFocusPolicy(QWidget::StrongFocus);
// setMouseTracking must be called after setFocusPolicy
viewport()->setMouseTracking(true);
inloop=false;
}
QBrowseBox::~QBrowseBox()
{
delete [] pixmaps_;
}
int QBrowseBox::coordsToIndex(int row, int col)
{
if (col < 0 || col > numCols() || row < 0 || row > numRows())
qDebug("coordsToIndex: invalid coords (%d, %d)\n", row, col);
return row + col * numCols();
}
void QBrowseBox::insertItem(QPixmap pixmap, int row, int col)
{
pixmaps_[coordsToIndex(row, col)] = pixmap;
}
void QBrowseBox::insertItem(QPixmap pixmap)
{
int w = pixmap.width() / numCols();
int h = pixmap.height() / numRows();
for (int row = 0; row < numRows(); ++row) {
for (int col = 0; col < numCols(); ++col) {
QPixmap small(w,h);
small.fill(backgroundColor());
bitBlt(&small, 0, 0, &pixmap, col * w, row * h,
w, h, Qt::CopyROP, false);
insertItem(small, row, col);
}
}
setCellWidth(pixmap.width() / numCols());
setCellHeight(pixmap.height() / numRows());
setMinimumWidth(pixmap.width() + (numCols() + 1) * 1);
setMinimumHeight(pixmap.height() + (numRows() + 1) * 1);
resize(minimumSize());
}
QPixmap QBrowseBox::pixmap(int row, int col)
{
if (col < 0 || col >= numCols() || row < 0 || row >= numRows())
return QPixmap();
return pixmaps_[coordsToIndex(row, col)];
}
int QBrowseBox::exec(const QPoint & pos)
{
return exec(pos.x(),pos.y());
}
int QBrowseBox::exec(const QWidget * trigger)
{
QPoint globalpos = trigger->parentWidget()->mapToGlobal( trigger->pos());
// is there enough space to put the box below the trigger?
if ( globalpos.y() + trigger->height()+height()+1<
QApplication::desktop()->height()) {
// is there enough space to set the box left-justified with the trigger
if (globalpos.x()+width()<QApplication::desktop()->width())
return exec(globalpos.x(),
globalpos.y()+trigger->height()+1);
else
return exec(globalpos.x()-width()-1,
globalpos.y()+trigger->height()+1);
} else {
if (globalpos.x()+width()<QApplication::desktop()->width())
return exec(globalpos.x(),
globalpos.y()-height()-1);
else
return exec(globalpos.x()-width()-1,
globalpos.y()-height()-1);
}
}
int QBrowseBox::exec(int x,int y)
{
firstrelease_ = true;
move(x,y);
show();
repaint();
qApp->enter_loop();
inloop = true;
if (activecell_.x()!=-1 && activecell_.y()!=-1 )
return coordsToIndex( activecell_.x(),activecell_.y());
else
return -1;
}
void QBrowseBox::keyPressEvent(QKeyEvent * e)
{
switch(e->key()) {
case Key_Up:
moveUp();
break;
case Key_Down:
moveDown();
break;
case Key_Left:
moveLeft();
break;
case Key_Right:
moveRight();
break;
case Key_Return:
emit selected(activecell_.x(), activecell_.y());
if ( isVisible() && parentWidget() &&
parentWidget()->inherits("QPopupMenu") )
parentWidget()->close();
else
close();
break;
case Key_Escape:
if (inloop)
qApp->exit_loop();
if ( isVisible() && parentWidget() &&
parentWidget()->inherits("QPopupMenu") )
parentWidget()->close();
default:
e->ignore();
}
}
void QBrowseBox::contentsMouseReleaseEvent(QMouseEvent *)
{
if (firstrelease_)
firstrelease_ = false;
else {
emit selected( activecell_.x(), activecell_.y());
if ( isVisible() && parentWidget() &&
parentWidget()->inherits("QPopupMenu") )
parentWidget()->close();
}
}
void QBrowseBox::closeEvent(QCloseEvent * e)
{
e->accept();
qApp->exit_loop();
}
void QBrowseBox::paintCell(QPainter * painter, int row, int col)
{
painter->setClipRect(cellGeometry(row, col));
int const index = coordsToIndex(row, col);
painter->drawPixmap(0, 0, pixmaps_[index]);
if (activecell_.x() == row && activecell_.y() == col) {
qDrawShadeRect(painter, 0, 0, cellWidth(),
cellHeight(), colorGroup(), false, 1);
} else {
qDrawPlainRect(painter, 0, 0, cellWidth(),
cellHeight(), colorGroup().background(), 1);
}
painter->setClipping(false);
}
void QBrowseBox::contentsMouseMoveEvent(QMouseEvent * e)
{
int x = e->pos().x();
int y = e->pos().y();
int cellx;
int celly;
if (x < 0 || y < 0 || x > width() || y > height()) {
// outside the box
cellx = -1;
celly = -1;
} else {
celly = (int)floor( ((double)x) / ((double)cellWidth()) );
cellx = (int)floor( ((double)y) / ((double)cellHeight()) );
}
if (activecell_.x() != cellx || activecell_.y() != celly) {
// mouse has been moved to another cell
int oldactivecellx = activecell_.x();
int oldactivecelly = activecell_.y();
activecell_.setX(cellx);
activecell_.setY(celly);
// remove old highlighting
updateCell(oldactivecellx, oldactivecelly);
// set new highlighting
updateCell(activecell_.x(), activecell_.y());
}
}
void QBrowseBox::moveLeft()
{
int const y = activecell_.y();
if (y>0)
activecell_.setY(y - 1);
else if (parentWidget())
QWidget::focusNextPrevChild(false);
updateCell(activecell_.x(), y);
updateCell(activecell_.x(), activecell_.y());
}
void QBrowseBox::moveRight()
{
int const y = activecell_.y();
if (y < numCols() - 1)
activecell_.setY(y+1);
updateCell(activecell_.x(), y);
updateCell(activecell_.x(), activecell_.y());
}
void QBrowseBox::moveUp()
{
int const x = activecell_.x();
if (x > 0)
activecell_.setX(x - 1);
else if (parentWidget())
QWidget::focusNextPrevChild(false);
updateCell(x, activecell_.y());
updateCell(activecell_.x(), activecell_.y());
}
void QBrowseBox::moveDown()
{
int const x = activecell_.x();
if (x < numRows() - 1)
activecell_.setX(x + 1);
updateCell(x, activecell_.y());
updateCell(activecell_.x(), activecell_.y());
}