127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#pragma once
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#include <list>
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#include "generic/callback.h"
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#include "debugging/debugging.h"
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#include <QWidget>
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#include <QEvent>
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class ToggleItem
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{
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BoolExportCallback m_exportCallback;
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typedef std::list<BoolImportCallback> ImportCallbacks;
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ImportCallbacks m_importCallbacks;
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public:
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ToggleItem( const BoolExportCallback& exportCallback ) : m_exportCallback( exportCallback ){
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}
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void update(){
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for ( ImportCallbacks::iterator i = m_importCallbacks.begin(); i != m_importCallbacks.end(); ++i )
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{
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m_exportCallback( *i );
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}
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}
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void addCallback( const BoolImportCallback& callback ){
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m_importCallbacks.push_back( callback );
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m_exportCallback( callback );
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}
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typedef MemberCaller1<ToggleItem, const BoolImportCallback&, &ToggleItem::addCallback> AddCallbackCaller;
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};
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class ToggleShown : public QObject
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{
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bool m_shownDeferred;
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QWidget* m_widget;
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public:
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ToggleItem m_item;
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ToggleShown( const ToggleShown& other ) = delete; // NOT COPYABLE
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ToggleShown& operator=( const ToggleShown& other ) = delete; // NOT ASSIGNABLE
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ToggleShown( bool shown )
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: m_shownDeferred( shown ), m_widget( 0 ), m_item( ActiveCaller( *this ) ){
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}
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void update(){
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m_item.update();
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}
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bool active() const {
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return m_widget == nullptr
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? m_shownDeferred
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: m_widget->isVisible();
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}
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void exportActive( const BoolImportCallback& importCallback ){
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importCallback( active() );
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}
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typedef MemberCaller1<ToggleShown, const BoolImportCallback&, &ToggleShown::exportActive> ActiveCaller;
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void set( bool shown ){
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m_shownDeferred = shown;
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if ( m_widget != nullptr )
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m_widget->setVisible( shown );
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}
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void toggle(){
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m_widget->setVisible( m_shownDeferred = !m_widget->isVisible() );
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}
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typedef MemberCaller<ToggleShown, &ToggleShown::toggle> ToggleCaller;
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void connect( QWidget* widget ){
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m_widget = widget;
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m_widget->setVisible( m_shownDeferred );
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m_widget->installEventFilter( this );
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QObject::connect( m_widget, &QObject::destroyed, [this](){ m_widget = nullptr; } );
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update();
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}
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protected:
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bool eventFilter( QObject *obj, QEvent *event ) override {
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if( event->type() == QEvent::Close ) {
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m_shownDeferred = false;
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/* HACK */ //. because widget isVisible() at this point
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const auto tmp = std::exchange( m_widget, nullptr );
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update();
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m_widget = tmp;
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}
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return QObject::eventFilter( obj, event ); // standard event processing
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}
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};
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namespace{
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void ToggleShown_importBool( ToggleShown& self, bool value ){
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self.set( value );
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}
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typedef ReferenceCaller1<ToggleShown, bool, ToggleShown_importBool> ToggleShownImportBoolCaller;
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void ToggleShown_exportBool( const ToggleShown& self, const BoolImportCallback& importer ){
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importer( self.active() );
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}
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typedef ConstReferenceCaller1<ToggleShown, const BoolImportCallback&, ToggleShown_exportBool> ToggleShownExportBoolCaller;
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}
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inline void widget_queue_draw( QWidget& widget ){
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widget.update();
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}
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typedef ReferenceCaller<QWidget, widget_queue_draw> WidgetQueueDrawCaller;
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