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added support for resizing

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svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=858269
This commit is contained in:
Alessandro Diaferia 2008-09-07 16:55:37 +00:00
parent d3280cee63
commit ca0a7d962f
2 changed files with 161 additions and 2 deletions
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132
dialog.cpp
View File

@ -1,4 +1,5 @@
/***************************************************************************
* Copyright (C) 2008 by Alessandro Diaferia <alediaferia@gmail.com> *
* Copyright (C) 2007 by Alexis Ménard <darktears31@gmail.com> *
* Copyright (C) 2007 Sebastian Kuegler <sebas@kde.org> *
* Copyright (C) 2006 Aaron Seigo <aseigo@kde.org> *
@ -44,6 +45,7 @@
#include <X11/Xlib.h>
#endif
const int resizeAreaMargin = 20;
namespace Plasma
{
@ -55,7 +57,8 @@ public:
: q(dialog),
background(0),
view(0),
widget(0)
widget(0),
resizeCorners(Dialog::NoCorner)
{
}
@ -74,6 +77,9 @@ public:
Plasma::PanelSvg *background;
QGraphicsView *view;
QGraphicsWidget *widget;
Dialog::ResizeCorners resizeCorners;
QMap<Dialog::ResizeCorner, QRect> resizeAreas;
Dialog::ResizeCorner resizeStartCorner;
};
void DialogPrivate::themeUpdated()
@ -125,6 +131,8 @@ Dialog::Dialog( QWidget * parent, Qt::WindowFlags f )
connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), this, SLOT(themeUpdated()));
d->themeUpdated();
setMouseTracking(true);
}
Dialog::~Dialog()
@ -140,6 +148,117 @@ void Dialog::paintEvent(QPaintEvent *e)
p.setCompositionMode(QPainter::CompositionMode_Source );
p.fillRect(rect(), Qt::transparent);
d->background->paintPanel(&p);
//we set the resize handlers
d->resizeAreas.clear();
d->resizeAreas[Dialog::NorthEast] = QRect(rect().right() - resizeAreaMargin, 0,
resizeAreaMargin, resizeAreaMargin);
d->resizeAreas[Dialog::NorthWest] = QRect(0,0, resizeAreaMargin, resizeAreaMargin);
d->resizeAreas[Dialog::SouthEast] = QRect(rect().right() - resizeAreaMargin,
rect().bottom() - resizeAreaMargin,
resizeAreaMargin, resizeAreaMargin);
d->resizeAreas[Dialog::SouthWest] = QRect(0, rect().bottom() - resizeAreaMargin,
resizeAreaMargin, resizeAreaMargin);
}
void Dialog::mouseMoveEvent(QMouseEvent *event)
{
if (d->resizeAreas[Dialog::NorthEast].contains(event->pos()) && d->resizeCorners & Dialog::NorthEast) {
setCursor(Qt::SizeBDiagCursor);
} else if (d->resizeAreas[Dialog::NorthWest].contains(event->pos()) && d->resizeCorners & Dialog::NorthWest) {
setCursor(Qt::SizeFDiagCursor);
} else if (d->resizeAreas[Dialog::SouthEast].contains(event->pos()) && d->resizeCorners & Dialog::SouthEast) {
setCursor(Qt::SizeFDiagCursor);
} else if (d->resizeAreas[Dialog::SouthWest].contains(event->pos()) && d->resizeCorners & Dialog::SouthWest) {
setCursor(Qt::SizeBDiagCursor);
} else {
unsetCursor();
}
// here we take care of resize..
if (d->resizeStartCorner != Dialog::NoCorner ) {
int newWidth;
int newHeight;
QPoint position;
switch(d->resizeStartCorner) {
case Dialog::NorthEast:
newWidth = event->x();
newHeight = height() - event->y();
position = QPoint(x(), y() + height() - newHeight);
break;
case Dialog::NorthWest:
newWidth = width() - event->x();
newHeight = height() - event->y();
position = QPoint(x() + width() - newWidth, y() + height() - newHeight);
break;
case Dialog::SouthWest:
newWidth = width() - event->x();
newHeight = event->y();
position = QPoint(x() + width() - newWidth, y());
break;
case Dialog::SouthEast:
newWidth = event->x();
newHeight = event->y();
position = QPoint(x(), y());
break;
default:
newWidth = width();
newHeight = height();
position = QPoint(x(), y());
break;
}
// let's check for limitations
if (newWidth < minimumWidth() || newWidth > maximumWidth()) {
newWidth = width();
position.setX(x());
}
if (newHeight < minimumHeight() || newHeight > maximumHeight()) {
newHeight = height();
position.setY(y());
}
setGeometry(QRect(position, QSize(newWidth, newHeight)));
}
QWidget::mouseMoveEvent(event);
}
void Dialog::mousePressEvent(QMouseEvent *event)
{
if (d->resizeAreas[Dialog::NorthEast].contains(event->pos()) && d->resizeCorners & Dialog::NorthEast) {
d->resizeStartCorner = Dialog::NorthEast;
} else if (d->resizeAreas[Dialog::NorthWest].contains(event->pos()) && d->resizeCorners & Dialog::NorthWest) {
d->resizeStartCorner = Dialog::NorthWest;
} else if (d->resizeAreas[Dialog::SouthEast].contains(event->pos()) && d->resizeCorners & Dialog::SouthEast) {
d->resizeStartCorner = Dialog::SouthEast;
} else if (d->resizeAreas[Dialog::SouthWest].contains(event->pos()) && d->resizeCorners & Dialog::SouthWest) {
d->resizeStartCorner = Dialog::SouthWest;
} else {
d->resizeStartCorner = Dialog::NoCorner;
}
QWidget::mousePressEvent(event);
}
void Dialog::mouseReleaseEvent(QMouseEvent *event)
{
d->resizeStartCorner = Dialog::NoCorner;
QWidget::mouseReleaseEvent(event);
}
void Dialog::resizeEvent(QResizeEvent *e)
@ -210,5 +329,16 @@ void Dialog::showEvent(QShowEvent * event)
emit dialogVisible(true);
}
void Dialog::setResizeHandleCorners(ResizeCorners corners)
{
d->resizeCorners = corners;
update();
}
Dialog::ResizeCorners Dialog::resizeCorners() const
{
return d->resizeCorners;
}
}
#include "dialog.moc"

29
dialog.h
View File

@ -1,4 +1,5 @@
/***************************************************************************
* Copyright (C) 2008 by Alessandro Diaferia <alediaferia@gmail.com> *
* Copyright (C) 2007 by Alexis Ménard <darktears31@gmail.com> *
* Copyright (C) 2007 Sebastian Kuegler <sebas@kde.org> *
* Copyright (C) 2006 Aaron Seigo <aseigo@kde.org> *
@ -51,6 +52,18 @@ class PLASMA_EXPORT Dialog : public QWidget
Q_OBJECT
public:
/**
* Use these flags to choose the active resize corners.
*/
enum ResizeCorner { NoCorner = 0,
NorthEast = 1,
SouthEast = 2,
NorthWest = 4,
SouthWest = 8,
All = NorthEast | SouthEast | NorthWest | SouthWest
};
Q_DECLARE_FLAGS(ResizeCorners, ResizeCorner)
/**
* @arg parent the parent widget, for plasmoids, this is usually 0.
* @arg f the Qt::WindowFlags, default is to not show a windowborder.
@ -61,6 +74,17 @@ class PLASMA_EXPORT Dialog : public QWidget
void setGraphicsWidget(QGraphicsWidget *widget);
QGraphicsWidget *graphicsWidget();
/**
* @arg corners the corners the resize handlers should be placed in.
*/
void setResizeHandleCorners(ResizeCorners corners);
/**
* Convenience method to get the enabled resize corners.
* @return which resize corners are active.
*/
ResizeCorners resizeCorners() const;
Q_SIGNALS:
/**
* Fires when the dialog automatically resizes.
@ -81,6 +105,9 @@ class PLASMA_EXPORT Dialog : public QWidget
bool eventFilter(QObject *watched, QEvent *event);
void hideEvent (QHideEvent * event);
void showEvent (QShowEvent * event);
void mouseMoveEvent (QMouseEvent * event);
void mousePressEvent (QMouseEvent * event);
void mouseReleaseEvent (QMouseEvent * event);
private:
DialogPrivate * const d;
@ -94,4 +121,6 @@ class PLASMA_EXPORT Dialog : public QWidget
} // Plasma namespace
Q_DECLARE_OPERATORS_FOR_FLAGS(Plasma::Dialog::ResizeCorners)
#endif