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| 1 | +/*************************************************************************** |
| 2 | + qgscollapsiblegroupbox.cpp |
| 3 | + ------------------- |
| 4 | + begin : August 2012 |
| 5 | + copyright : (C) 2012 by Etienne Tourigny |
| 6 | + email : etourigny dot dev at gmail dot com |
| 7 | + ***************************************************************************/ |
| 8 | + |
| 9 | +/*************************************************************************** |
| 10 | + * * |
| 11 | + * This program is free software; you can redistribute it and/or modify * |
| 12 | + * it under the terms of the GNU General Public License as published by * |
| 13 | + * the Free Software Foundation; either version 2 of the License, or * |
| 14 | + * (at your option) any later version. * |
| 15 | + * * |
| 16 | + ***************************************************************************/ |
| 17 | + |
| 18 | +#include "qgscollapsiblegroupbox.h" |
| 19 | + |
| 20 | +#include "qgsapplication.h" |
| 21 | +#include "qgslogger.h" |
| 22 | + |
| 23 | +#include <QStyleOptionGroupBox> |
| 24 | +#include <QStylePainter> |
| 25 | +#include <QLayout> |
| 26 | + |
| 27 | +QgsCollapsibleGroupBox::QgsCollapsibleGroupBox( QWidget *parent ) |
| 28 | + : QGroupBox( parent ), mCollapsed( false ) |
| 29 | +{ |
| 30 | + connect( this, SIGNAL( toggled( bool ) ), this, SLOT( setToggled( bool ) ) ); |
| 31 | +} |
| 32 | + |
| 33 | +QgsCollapsibleGroupBox::QgsCollapsibleGroupBox( const QString &title, QWidget *parent ) |
| 34 | + : QGroupBox( title, parent ), mCollapsed( false ) |
| 35 | +{} |
| 36 | + |
| 37 | +void QgsCollapsibleGroupBox::paintEvent( QPaintEvent * event ) |
| 38 | +{ |
| 39 | + QGroupBox::paintEvent( event ); |
| 40 | + |
| 41 | + // paint expand/collapse icon only if groupbox is checkable as icon replaces check box |
| 42 | + if ( ! isCheckable() ) |
| 43 | + return; |
| 44 | + |
| 45 | + // create background mask + expand/collapse icon |
| 46 | + // icons from http://www.iconfinder.com/search/?q=iconset%3AsplashyIcons |
| 47 | + QPixmap icon( mCollapsed ? |
| 48 | + QgsApplication::getThemePixmap( "/mIconExpand.png" ) : |
| 49 | + QgsApplication::getThemePixmap( "/mIconCollapse.png" ) ); |
| 50 | + QPixmap background( icon.width() + 2, icon.height() + 2 ); |
| 51 | + background.fill( palette().color( backgroundRole() ) ); |
| 52 | + |
| 53 | + // paint on top of checkbox - does this work with all platforms/themes? |
| 54 | + QStylePainter paint( this ); |
| 55 | + QStyleOptionGroupBox option; |
| 56 | + initStyleOption( &option ); |
| 57 | + paint.drawComplexControl( QStyle::CC_GroupBox, option ); |
| 58 | + paint.drawItemPixmap( option.rect.adjusted( 4, -1, 0, 0 ), |
| 59 | + Qt::AlignTop | Qt::AlignLeft, |
| 60 | + background ); |
| 61 | + paint.drawItemPixmap( option.rect.adjusted( 6, 0, 0, 0 ), |
| 62 | + Qt::AlignTop | Qt::AlignLeft, |
| 63 | + icon ); |
| 64 | +} |
| 65 | + |
| 66 | +void QgsCollapsibleGroupBox::showEvent( QShowEvent * event ) |
| 67 | +{ |
| 68 | + QGroupBox::showEvent( event ); |
| 69 | + // collapse if needed - any calls to setCollapsed() before have no effect |
| 70 | + if ( isCheckable() && ! isChecked() && ! isCollapsed() ) |
| 71 | + setCollapsed( true ); |
| 72 | +} |
| 73 | + |
| 74 | +void QgsCollapsibleGroupBox::setCollapsed( bool collapse ) |
| 75 | +{ |
| 76 | + if ( ! isVisible() ) |
| 77 | + return; |
| 78 | + |
| 79 | + mCollapsed = collapse; |
| 80 | + |
| 81 | + // minimize layout margins and save for subsequent restore |
| 82 | + if ( collapse ) |
| 83 | + { |
| 84 | + if ( layout() ) |
| 85 | + { |
| 86 | + mMargins = layout()->contentsMargins(); |
| 87 | + layout()->setContentsMargins( 1, 1, 1, 1 ); |
| 88 | + } |
| 89 | + } |
| 90 | + else |
| 91 | + { |
| 92 | + if ( layout() ) |
| 93 | + { |
| 94 | + layout()->setContentsMargins( mMargins ); |
| 95 | + } |
| 96 | + } |
| 97 | + |
| 98 | + // if we are collapsing, save hidden widgets in a list |
| 99 | + if ( collapse ) |
| 100 | + { |
| 101 | + mHiddenWidgets.clear(); |
| 102 | + foreach ( QWidget *widget, findChildren<QWidget*>() ) |
| 103 | + { |
| 104 | + if ( widget->isHidden() ) |
| 105 | + mHiddenWidgets << widget; |
| 106 | + } |
| 107 | + } |
| 108 | + |
| 109 | + // show/hide widgets |
| 110 | + foreach ( QWidget *widget, findChildren<QWidget*>() ) |
| 111 | + widget->setHidden( collapse ); |
| 112 | + |
| 113 | + // if we are expanding, re-hide saved hidden widgets |
| 114 | + if ( ! collapse ) |
| 115 | + { |
| 116 | + foreach ( QWidget *widget, mHiddenWidgets ) |
| 117 | + { |
| 118 | + widget->setHidden( true ); |
| 119 | + } |
| 120 | + } |
| 121 | + |
| 122 | + if ( mCollapsed ) |
| 123 | + emit collapsed( this ); |
| 124 | + else |
| 125 | + emit expanded( this ); |
| 126 | +} |
| 127 | + |
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