bool PageView::readDown()
{
if( atBottom() )
return false;
else {
// Coordinate of the bottom of the viewport
int bottom = contentsY() + visibleHeight();
DocumentWidget* widget = 0;
// Find the widget(s) that intersect the bottom of the viewport
// TODO: It would be better to use a binary search.
for(Q_UINT16 i=0; i<widgetList->size(); i++)
{
widget = widgetList->at(i);
if (childY(widget) < bottom && childY(widget) + widget->height() > bottom)
{
// Draw scrollguide
widget->drawScrollGuide(bottom - childY(widget));
}
}
int newValue = QMIN( verticalScrollBar()->value() + (int)(height() * 0.9),
verticalScrollBar()->maxValue() );
verticalScrollBar()->setValue( newValue );
return true;
}
}
void ChatView::appendText(const QString &text)
{
bool doScrollToBottom = atBottom();
// prevent scrolling back to selected text when
// restoring selection
int scrollbarValue = verticalScrollBar()->value();
PsiTextView::appendText(text);
if (doScrollToBottom)
scrollToBottom();
else
verticalScrollBar()->setValue(scrollbarValue);
}
/*!
\fn void CSizeGrip::mouseMoveEvent(QMouseEvent * event)
Resizes the top-level widget containing this widget. The mouse
move event is passed in the \a event parameter.
*/
void CSizeGrip::mouseMoveEvent(QMouseEvent * e)
{
if (e->buttons() != Qt::LeftButton) {
QWidget::mouseMoveEvent(e);
return;
}
QWidget* tlw = qt_sizegrip_topLevelWidget();
if (!gotMousePress || tlw->testAttribute(Qt::WA_WState_ConfigPending))
return;
#ifdef Q_WS_X11
#if QT_VERSION >= 0x050000
if (tlw->isWindow() && X11->isSupportedByWM(ATOM(_NET_WM_MOVERESIZE))
&& tlw->isTopLevel() && !(tlw->windowFlags() & Qt::X11BypassWindowManagerHint)
&& !tlw->testAttribute(Qt::WA_DontShowOnScreen) && !qt_widget_private(tlw)->hasHeightForWidth())
return;
#endif
#endif
#ifdef Q_WS_WIN
#if QT_VERSION >= 0x050000
if (tlw->isWindow() && GetSystemMenu(tlw->winId(), FALSE) != 0 && internalWinId()
&& !tlw->testAttribute(Qt::WA_DontShowOnScreen) && !qt_widget_private(tlw)->hasHeightForWidth()) {
MSG msg;
while(PeekMessage(&msg, winId(), WM_MOUSEMOVE, WM_MOUSEMOVE, PM_REMOVE));
return;
}
#endif
#endif
QPoint np(e->globalPos());
// Don't extend beyond the available geometry; bound to dyMax and dxMax.
QSize ns;
if (atBottom())
ns.rheight() = r.height() + qMin(np.y() - p.y(), dyMax);
else
ns.rheight() = r.height() - qMax(np.y() - p.y(), dyMax);
if (atLeft())
ns.rwidth() = r.width() - qMax(np.x() - p.x(), dxMax);
else
ns.rwidth() = r.width() + qMin(np.x() - p.x(), dxMax);
ns = QLayout::closestAcceptableSize(tlw, ns);
QPoint p;
QRect nr(p, ns);
if (atBottom()) {
if (atLeft())
nr.moveTopRight(r.topRight());
else
nr.moveTopLeft(r.topLeft());
} else {
if (atLeft())
nr.moveBottomRight(r.bottomRight());
else
nr.moveBottomLeft(r.bottomLeft());
}
((CPObject*)tlw)->changeGeometrySize(nr.x(),nr.y(),nr.width(),nr.height());
}
/*!
\fn void CSizeGrip::mousePressEvent(QMouseEvent * event)
Receives the mouse press events for the widget, and primes the
resize operation. The mouse press event is passed in the \a event
parameter.
*/
void CSizeGrip::mousePressEvent(QMouseEvent * e)
{
ungrabGesture(Qt::TapAndHoldGesture);
if (e->button() != Qt::LeftButton) {
QWidget::mousePressEvent(e);
return;
}
QWidget *tlw = qt_sizegrip_topLevelWidget();
p = e->globalPos();
gotMousePress = true;
r = tlw->geometry();
#ifdef Q_WS_X11
#if QT_VERSION >= 0x050000
// Use a native X11 sizegrip for "real" top-level windows if supported.
if (tlw->isWindow() && X11->isSupportedByWM(ATOM(_NET_WM_MOVERESIZE))
&& !(tlw->windowFlags() & Qt::X11BypassWindowManagerHint)
&& !tlw->testAttribute(Qt::WA_DontShowOnScreen) && !qt_widget_private(tlw)->hasHeightForWidth()) {
XEvent xev;
xev.xclient.type = ClientMessage;
xev.xclient.message_type = ATOM(_NET_WM_MOVERESIZE);
xev.xclient.display = X11->display;
xev.xclient.window = tlw->winId();
xev.xclient.format = 32;
xev.xclient.data.l[0] = e->globalPos().x();
xev.xclient.data.l[1] = e->globalPos().y();
if (atBottom())
xev.xclient.data.l[2] = atLeft() ? 6 : 4; // bottomleft/bottomright
else
xev.xclient.data.l[2] = atLeft() ? 0 : 2; // topleft/topright
xev.xclient.data.l[3] = Button1;
xev.xclient.data.l[4] = 0;
XUngrabPointer(X11->display, X11->time);
XSendEvent(X11->display, QX11Info::appRootWindow(x11Info().screen()), False,
SubstructureRedirectMask | SubstructureNotifyMask, &xev);
return;
}
#endif
#endif // Q_WS_X11
#ifdef Q_WS_WIN
#if QT_VERSION >= 0x050000
if (tlw->isWindow() && !tlw->testAttribute(Qt::WA_DontShowOnScreen) && !qt_widget_private(tlw)->hasHeightForWidth()) {
uint orientation = 0;
if (atBottom())
orientation = atLeft() ? SZ_SIZEBOTTOMLEFT : SZ_SIZEBOTTOMRIGHT;
else
orientation = atLeft() ? SZ_SIZETOPLEFT : SZ_SIZETOPRIGHT;
ReleaseCapture();
PostMessage(tlw->winId(), WM_SYSCOMMAND, orientation, 0);
return;
}
#endif
#endif // Q_WS_WIN
// Find available desktop/workspace geometry.
QRect availableGeometry;
bool hasVerticalSizeConstraint = true;
bool hasHorizontalSizeConstraint = true;
if (tlw->isWindow())
availableGeometry = QApplication::desktop()->availableGeometry(tlw);
else {
const QWidget *tlwParent = tlw->parentWidget();
// Check if tlw is inside QAbstractScrollArea/QScrollArea.
// If that's the case tlw->parentWidget() will return the viewport
// and tlw->parentWidget()->parentWidget() will return the scroll area.
#ifndef QT_NO_SCROLLAREA
QAbstractScrollArea *scrollArea = qobject_cast<QAbstractScrollArea *>(tlwParent->parentWidget());
if (scrollArea) {
hasHorizontalSizeConstraint = scrollArea->horizontalScrollBarPolicy() == Qt::ScrollBarAlwaysOff;
hasVerticalSizeConstraint = scrollArea->verticalScrollBarPolicy() == Qt::ScrollBarAlwaysOff;
}
#endif // QT_NO_SCROLLAREA
availableGeometry = tlwParent->contentsRect();
}
// Find frame geometries, title bar height, and decoration sizes.
const QRect frameGeometry = tlw->frameGeometry();
const int titleBarHeight = qMax(tlw->geometry().y() - frameGeometry.y(), 0);
const int bottomDecoration = qMax(frameGeometry.height() - tlw->height() - titleBarHeight, 0);
const int leftRightDecoration = qMax((frameGeometry.width() - tlw->width()) / 2, 0);
// Determine dyMax depending on whether the sizegrip is at the bottom
// of the widget or not.
if (atBottom()) {
if (hasVerticalSizeConstraint)
dyMax = availableGeometry.bottom() - r.bottom() - bottomDecoration;
else
dyMax = INT_MAX;
} else {
if (hasVerticalSizeConstraint)
dyMax = availableGeometry.y() - r.y() + titleBarHeight;
else
dyMax = -INT_MAX;
}
// In RTL mode, the size grip is to the left; find dxMax from the desktop/workspace
// geometry, the size grip geometry and the width of the decoration.
if (atLeft()) {
if (hasHorizontalSizeConstraint)
dxMax = availableGeometry.x() - r.x() + leftRightDecoration;
else
dxMax = -INT_MAX;
} else {
if (hasHorizontalSizeConstraint)
dxMax = availableGeometry.right() - r.right() - leftRightDecoration;
else
dxMax = INT_MAX;
}
}
