int Q3DockAreaLayout::layoutItems(const QRect &rect, bool testonly)
{
if (dockWindows->isEmpty())
return 0;
dirty = false;
// some corrections
QRect r = rect;
if (orientation() == Qt::Vertical)
r.setHeight(r.height() - 3);
// init
lines.clear();
ls.clear();
int start = start_pos(r, orientation());
int pos = start;
int sectionpos = 0;
int linestrut = 0;
QList<Q3DockData> lastLine;
int tbstrut = -1;
int maxsize = size_extent(rect.size(), orientation());
int visibleWindows = 0;
// go through all widgets in the dock
for (int i = 0; i < dockWindows->size(); ++i) {
Q3DockWindow *dw = dockWindows->at(i);
if (dw->isHidden())
continue;
++visibleWindows;
// find position for the widget: This is the maximum of the
// end of the previous widget and the offset of the widget. If
// the position + the width of the widget dosn't fit into the
// dock, try moving it a bit back, if possible.
int op = pos;
int dockExtend = dock_extent(dw, orientation(), maxsize);
if (!dw->isStretchable()) {
pos = qMax(pos, dw->offset());
if (pos + dockExtend > size_extent(r.size(), orientation()) - 1)
pos = qMax(op, size_extent(r.size(), orientation()) - 1 - dockExtend);
}
if (!lastLine.isEmpty() && !dw->newLine() && space_left(rect, pos, orientation()) < dockExtend)
shrink_extend(dw, dockExtend, space_left(rect, pos, orientation()), orientation());
// if the current widget doesn't fit into the line anymore and it is not the first widget of the line
if (!lastLine.isEmpty() &&
(space_left(rect, pos, orientation()) < dockExtend || dw->newLine())) {
if (!testonly) // place the last line, if not in test mode
place_line(lastLine, orientation(), linestrut, size_extent(r.size(), orientation()), tbstrut, maxsize, this);
// remember the line coordinats of the last line
if (orientation() == Qt::Horizontal)
lines.append(QRect(0, sectionpos, r.width(), linestrut));
else
lines.append(QRect(sectionpos, 0, linestrut, r.height()));
// do some clearing for the next line
lastLine.clear();
sectionpos += linestrut;
linestrut = 0;
pos = start;
tbstrut = -1;
}
// remember first widget of a line
if (lastLine.isEmpty()) {
ls.append(dw);
// try to make the best position
int op = pos;
if (!dw->isStretchable())
pos = qMax(pos, dw->offset());
if (pos + dockExtend > size_extent(r.size(), orientation()) - 1)
pos = qMax(op, size_extent(r.size(), orientation()) - 1 - dockExtend);
}
// do some calculations and add the remember the rect which the docking widget requires for the placing
QRect dwRect(pos, sectionpos, dockExtend, dock_strut(dw, orientation() ));
lastLine.append(Q3DockData(dw, dwRect));
if (qobject_cast<Q3ToolBar*>(dw))
tbstrut = qMax(tbstrut, dock_strut(dw, orientation()));
linestrut = qMax(dock_strut(dw, orientation()), linestrut);
add_size(dockExtend, pos, orientation());
}
// if some stuff was not placed/stored yet, do it now
if (!testonly)
place_line(lastLine, orientation(), linestrut, size_extent(r.size(), orientation()), tbstrut, maxsize, this);
if (orientation() == Qt::Horizontal)
lines.append(QRect(0, sectionpos, r.width(), linestrut));
else
lines.append(QRect(sectionpos, 0, linestrut, r.height()));
if (lines.size() >= 2 && *(--lines.end()) == *(--(--lines.end())))
lines.removeLast();
bool hadResizable = false;
for (int i = 0; i < dockWindows->size(); ++i) {
Q3DockWindow *dw = dockWindows->at(i);
if (!dw->isVisibleTo(parentWidget))
continue;
hadResizable = hadResizable || dw->isResizeEnabled();
dw->updateSplitterVisibility(visibleWindows > 1); //!dw->area()->isLastDockWindow(dw));
if (Q3ToolBar *tb = qobject_cast<Q3ToolBar *>(dw))
tb->checkForExtension(dw->size());
}
return sectionpos + linestrut;
}
void Q3DockArea::moveDockWindow(Q3DockWindow *w, const QPoint &p, const QRect &r, bool swap)
{
invalidateFixedSizes();
int mse = -10;
bool hasResizable = false;
for (int i = 0; i < dockWindows.size(); ++i) {
Q3DockWindow *dw = dockWindows.at(i);
if (dw->isHidden())
continue;
if (dw->isResizeEnabled())
hasResizable = true;
if (orientation() != Qt::Horizontal)
mse = qMax(qMax(dw->fixedExtent().width(), dw->width()), mse);
else
mse = qMax(qMax(dw->fixedExtent().height(), dw->height()), mse);
}
if (!hasResizable && w->isResizeEnabled()) {
if (orientation() != Qt::Horizontal)
mse = qMax(w->fixedExtent().width(), mse);
else
mse = qMax(w->fixedExtent().height(), mse);
}
Q3DockWindow *dockWindow = 0;
int dockWindowIndex = findDockWindow(w);
QList<Q3DockWindow *> lineStarts = layout->lineStarts();
QList<QRect> lines = layout->lineList();
bool wasAloneInLine = false;
QPoint pos = mapFromGlobal(p);
int line = lineOf(dockWindowIndex);
QRect lr;
if (line < lines.size())
lr = lines.at(line);
if (dockWindowIndex != -1) {
if (lineStarts.contains(w)
&& ((dockWindowIndex < dockWindows.count() - 1
&& lineStarts.contains(dockWindows.at(dockWindowIndex + 1)))
|| dockWindowIndex == dockWindows.count() - 1))
wasAloneInLine = true;
dockWindow = dockWindows.takeAt(dockWindowIndex);
if (!wasAloneInLine) { // only do the pre-layout if the widget isn't the only one in its line
if (lineStarts.contains(dockWindow) && dockWindowIndex < dockWindows.count())
dockWindows.at(dockWindowIndex)->setNewLine(true);
layout->layoutItems(QRect(0, 0, width(), height()), true);
}
} else {
dockWindow = w;
bool vis = dockWindow->isVisible();
dockWindow->setParent(this);
dockWindow->move(0, 0);
if(vis)
dockWindow->show();
if (swap)
dockWindow->resize(dockWindow->height(), dockWindow->width());
w->installEventFilter(this);
}
lineStarts = layout->lineStarts();
lines = layout->lineList();
QRect rect = QRect(mapFromGlobal(r.topLeft()), r.size());
if (orientation() == Qt::Horizontal && QApplication::reverseLayout()) {
rect = QRect(width() - rect.x() - rect.width(), rect.y(), rect.width(), rect.height());
pos.rx() = width() - pos.x();
}
dockWindow->setOffset(point_pos(rect.topLeft(), orientation()));
if (orientation() == Qt::Horizontal) {
int offs = dockWindow->offset();
if (width() - offs < dockWindow->minimumWidth())
dockWindow->setOffset(width() - dockWindow->minimumWidth());
} else {
int offs = dockWindow->offset();
if (height() - offs < dockWindow->minimumHeight())
dockWindow->setOffset(height() - dockWindow->minimumHeight());
}
if (dockWindows.isEmpty()) {
dockWindows.append(dockWindow);
} else {
int dockLine = -1;
bool insertLine = false;
int i = 0;
QRect lineRect;
// find the line which we touched with the mouse
for (QList<QRect>::Iterator it = lines.begin(); it != lines.end(); ++it, ++i) {
if (point_pos(pos, orientation(), true) >= point_pos((*it).topLeft(), orientation(), true) &&
point_pos(pos, orientation(), true) <= point_pos((*it).topLeft(), orientation(), true) +
size_extent((*it).size(), orientation(), true)) {
dockLine = i;
lineRect = *it;
break;
}
}
if (dockLine == -1) { // outside the dock...
insertLine = true;
if (point_pos(pos, orientation(), true) < 0) // insert as first line
dockLine = 0;
else
dockLine = (int)lines.count(); // insert after the last line ### size_t/int cast
} else { // inside the dock (we have found a dockLine)
if (point_pos(pos, orientation(), true) <
point_pos(lineRect.topLeft(), orientation(), true) + 4) { // mouse was at the very beginning of the line
insertLine = true; // insert a new line before that with the docking widget
} else if (point_pos(pos, orientation(), true) >
point_pos(lineRect.topLeft(), orientation(), true) +
size_extent(lineRect.size(), orientation(), true) - 4) { // mouse was at the very and of the line
insertLine = true; // insert a line after that with the docking widget
dockLine++;
}
}
if (!insertLine && wasAloneInLine && lr.contains(pos)) // if we are alone in a line and just moved in there, re-insert it
insertLine = true;
#if defined(QDOCKAREA_DEBUG)
qDebug("insert in line %d, and insert that line: %d", dockLine, insertLine);
qDebug(" (btw, we have %d lines)", lines.count());
#endif
Q3DockWindow *dw = 0;
if (dockLine >= (int)lines.count()) { // insert after last line
dockWindows.append(dockWindow);
dockWindow->setNewLine(true);
#if defined(QDOCKAREA_DEBUG)
qDebug("insert at the end");
#endif
} else if (dockLine == 0 && insertLine) { // insert before first line
dockWindows.insert(0, dockWindow);
dockWindows.at(1)->setNewLine(true);
#if defined(QDOCKAREA_DEBUG)
qDebug("insert at the begin");
#endif
} else { // insert somewhere in between
// make sure each line start has a new line
for (int i = 0; i < lineStarts.size(); ++i) {
dw = lineStarts.at(i);
dw->setNewLine(true);
}
// find the index of the first widget in the search line
int searchLine = dockLine;
#if defined(QDOCKAREA_DEBUG)
qDebug("search line start of %d", searchLine);
#endif
Q3DockWindow *lsw = lineStarts.at(searchLine);
int index = dockWindows.indexOf(lsw);
if (index == -1) { // the linestart widget hasn't been found, try to find it harder
if (lsw == w && dockWindowIndex <= dockWindows.count())
index = dockWindowIndex;
else
index = 0;
}
#if defined(QDOCKAREA_DEBUG)
qDebug(" which starts at %d", index);
#endif
if (!insertLine) { // if we insert the docking widget in the existing line
// find the index for the widget
bool inc = true;
bool firstTime = true;
for (int i = index; i < dockWindows.size(); ++i) {
dw = dockWindows.at(i);
if (orientation() == Qt::Horizontal)
dw->setFixedExtentWidth(-1);
else
dw->setFixedExtentHeight(-1);
if (!firstTime && lineStarts.contains(dw)) // we are in the next line, so break
break;
if (point_pos(pos, orientation()) <
point_pos(fix_pos(dw), orientation()) + size_extent(dw->size(), orientation()) / 2) {
inc = false;
}
if (inc)
index++;
firstTime = false;
}
#if defined(QDOCKAREA_DEBUG)
qDebug("insert at index: %d", index);
#endif
// if we insert it just before a widget which has a new line, transfer the newline to the docking widget
// but not if we didn't only mave a widget in its line which was alone in the line before
if (!(wasAloneInLine && lr.contains(pos))
&& index >= 0 && index < dockWindows.count() &&
dockWindows.at(index)->newLine() && lineOf(index) == dockLine) {
#if defined(QDOCKAREA_DEBUG)
qDebug("get rid of the old newline and get me one");
#endif
dockWindows.at(index)->setNewLine(false);
dockWindow->setNewLine(true);
} else if (wasAloneInLine && lr.contains(pos)) {
dockWindow->setNewLine(true);
} else { // if we are somewhere in a line, get rid of the newline
dockWindow->setNewLine(false);
}
} else { // insert in a new line, so make sure the dock widget and the widget which will be after it have a newline
#if defined(QDOCKAREA_DEBUG)
qDebug("insert a new line");
#endif
if (index < dockWindows.count()) {
#if defined(QDOCKAREA_DEBUG)
qDebug("give the widget at %d a newline", index);
#endif
Q3DockWindow* nldw = dockWindows.at(index);
if (nldw)
nldw->setNewLine(true);
}
#if defined(QDOCKAREA_DEBUG)
qDebug("give me a newline");
#endif
dockWindow->setNewLine(true);
}
// finally insert the widget
dockWindows.insert(index, dockWindow);
}
}
if (mse != -10 && w->isResizeEnabled()) {
if (orientation() != Qt::Horizontal)
w->setFixedExtentWidth(qMin(qMax(w->minimumWidth(), mse), w->sizeHint().width()));
else
w->setFixedExtentHeight(qMin(qMax(w->minimumHeight(), mse), w->sizeHint().height()));
}
updateLayout();
setSizePolicy(QSizePolicy(orientation() == Qt::Horizontal ? QSizePolicy::Expanding : QSizePolicy::Minimum,
orientation() == Qt::Vertical ? QSizePolicy::Expanding : QSizePolicy::Minimum));
}
QTextStream &operator<<(QTextStream &ts, const Q3DockArea &dockArea)
{
QString str;
QList<Q3DockWindow *> l = dockArea.dockWindowList();
for (int i = 0; i < l.size(); ++i) {
Q3DockWindow *dw = l.at(i);
str += QLatin1Char('[') + QString(dw->windowTitle()) + QLatin1Char(',') + QString::number((int)dw->offset()) +
QLatin1Char(',') + QString::number((int)dw->newLine()) + QLatin1Char(',') + QString::number(dw->fixedExtent().width()) +
QLatin1Char(',') + QString::number(dw->fixedExtent().height()) + QLatin1Char(',') + QString::number((int)!dw->isHidden()) + QLatin1Char(']');
}
ts << str << endl;
return ts;
}