@@ -24,19 +24,20 @@
#include < QMouseEvent>
#include < QStyleOptionGroupBox>
#include < QSettings>
#include < QScrollArea>
QIcon QgsCollapsibleGroupBox::mCollapseIcon ;
QIcon QgsCollapsibleGroupBox::mExpandIcon ;
QgsCollapsibleGroupBox::QgsCollapsibleGroupBox ( QWidget *parent )
: QGroupBox( parent ), mCollapsed( false ), mSaveState( true )
: QGroupBox( parent )
{
init ();
}
QgsCollapsibleGroupBox::QgsCollapsibleGroupBox ( const QString &title,
QWidget *parent )
: QGroupBox( title, parent ), mCollapsed( false ), mSaveState( true )
: QGroupBox( title, parent )
{
init ();
}
@@ -48,6 +49,14 @@ QgsCollapsibleGroupBox::~QgsCollapsibleGroupBox()
void QgsCollapsibleGroupBox::init ()
{
// variables
mCollapsed = false ;
mSaveState = true ;
mInitFlat = false ;
mScrollOnExpand = true ;
mShown = false ;
mParentScrollArea = 0 ;
// init icons
if ( mCollapseIcon .isNull () )
{
@@ -70,11 +79,32 @@ void QgsCollapsibleGroupBox::init()
void QgsCollapsibleGroupBox::showEvent ( QShowEvent * event )
{
// initialise widget on first show event only
if ( mShown )
{
event->accept ();
return ;
}
mShown = true ;
// check if groupbox was set to flat in Designer or in code
mInitFlat = isFlat ();
// find parent QScrollArea - this might not work in complex layouts - should we look deeper?
if ( parent () && parent ()->parent () )
mParentScrollArea = dynamic_cast <QScrollArea*>( parent ()->parent ()->parent () );
else
mParentScrollArea = 0 ;
if ( mParentScrollArea )
QgsDebugMsg ( " found a QScrollArea parent: " mParentScrollArea ->objectName () );
else
QgsDebugMsg ( " did not find a QScrollArea parent"
loadState ();
updateStyle ();
// expand if needed - any calls to setCollapsed() before only set mCollapsed
// expand if needed - any calls to setCollapsed() before only set mCollapsed, but have UI effect
if ( mCollapsed )
{
setCollapsed ( mCollapsed );
@@ -85,6 +115,7 @@ void QgsCollapsibleGroupBox::showEvent( QShowEvent * event )
still emit signal for connections using expanded state */
emit collapsedStateChanged ( this );
}
event->accept ();
}
@@ -152,7 +183,6 @@ void QgsCollapsibleGroupBox::saveState()
{
if ( ! mSaveState )
return ;
QgsDebugMsg ( " key = " saveKey () + " objectName = " objectName () );
QSettings settings;
QString key = saveKey ();
settings.setValue ( key + " /checked" isChecked () );
@@ -178,24 +208,66 @@ void QgsCollapsibleGroupBox::updateStyle()
{
setUpdatesEnabled ( false );
// customize style sheet
// margin/offset defaults
int marginLeft = 20 ; // title margin for disclosure triangle
int marginRight = 5 ; // a little bit of space on the right, to match space on the left
int offsetLeft = 0 ; // offset for oxygen theme
int offsetTop = 0 ;
int offsetTop2 = 0 ; // offset for triangle
// calculate offset if frame overlaps triangle (oxygen theme)
// using an offset of 6 pixels from frame border
if ( QApplication::style ()->objectName ().toLower () == " oxygen"
{
QStyleOptionGroupBox box;
initStyleOption ( &box );
QRect rectFrame = style ()->subControlRect ( QStyle::CC_GroupBox, &box,
QStyle::SC_GroupBoxFrame, this );
QRect rectCheckBox = style ()->subControlRect ( QStyle::CC_GroupBox, &box,
QStyle::SC_GroupBoxCheckBox, this );
if ( rectFrame.left () <= 0 )
offsetLeft = 6 + rectFrame.left ();
if ( rectFrame.top () <= 0 )
{
if ( isCheckable () )
{
// if is checkable align with checkbox
offsetTop = ( rectCheckBox.height () / 2 ) -
( mCollapseButton ->height () / 2 ) + rectCheckBox.top ();
offsetTop2 = offsetTop + 1 ;
}
else
{
offsetTop = 6 + rectFrame.top ();
offsetTop2 = offsetTop;
}
}
}
QgsDebugMsg ( QString ( " groupbox: %1 style: %2 offset: left=%3 top=%4 top2=%5" arg (
objectName () ).arg ( QApplication::style ()->objectName () ).arg ( offsetLeft ).arg ( offsetTop ).arg ( offsetTop2 ) );
// customize style sheet for collapse/expand button and force left-aligned title
// TODO: move to app stylesheet system, when appropriate
QString ss;
ss += " QgsCollapsibleGroupBox::title {"
ss += " subcontrol-origin: margin;"
ss += " subcontrol-position: top left;"
ss += " margin-left: 20px;" // offset for disclosure triangle
ss += " margin-right: 5px;" // a little bit of space on the right, to match space on the left
ss += QString ( " margin-left: %1px;" arg ( marginLeft );
ss += QString ( " margin-right: %1px;" arg ( marginRight );
ss += QString ( " left: %1px;" arg ( offsetLeft );
ss += QString ( " top: %1px;" arg ( offsetTop );
ss += " }"
setStyleSheet ( ss );
// clear toolbutton default background and border
// TODO: move to app stylesheet system, when appropriate
// clear toolbutton default background and border and apply offset
QString ssd;
ssd = QString ( " QgsCollapsibleGroupBox > QToolButton#%1 {" arg ( mCollapseButton ->objectName () );
ssd += " background-color: rgba(255, 255, 255, 0); border: none;"
ssd += " }"
mCollapseButton ->setStyleSheet ( ssd );
if ( offsetLeft != 0 || offsetTop2 != 0 )
mCollapseButton ->move ( offsetLeft, offsetTop2 );
setUpdatesEnabled ( true );
}
@@ -208,14 +280,24 @@ void QgsCollapsibleGroupBox::setCollapsed( bool collapse )
return ;
// for consistent look/spacing across platforms when collapsed
setFlat ( collapse );
if ( ! mInitFlat ) // skip if initially set to flat in Designer
setFlat ( collapse );
// avoid flicker in X11
QApplication::processEvents ();
// set maximum height to hide contents - does this work in all envs?
// setMaximumHeight( collapse ? 25 : 16777215 );
setMaximumHeight ( collapse ? titleRect ().bottom () + 6 : 16777215 );
mCollapseButton ->setIcon ( collapse ? mExpandIcon : mCollapseIcon );
// if expanding and is in a QScrollArea, scroll down to make entire widget visible
if ( mScrollOnExpand && !collapse && mParentScrollArea )
{
// process events so entire widget is shown
QApplication::processEvents ();
mParentScrollArea ->ensureWidgetVisible ( this );
}
emit collapsedStateChanged ( this );
}
