| -rw-r--r-- | library/menubutton.cpp | 71 |
1 files changed, 50 insertions, 21 deletions
diff --git a/library/menubutton.cpp b/library/menubutton.cpp index 6b1fa2b..f5c832c 100644 --- a/library/menubutton.cpp +++ b/library/menubutton.cpp @@ -1,187 +1,216 @@ /********************************************************************** -** Copyright (C) 2000 Trolltech AS. All rights reserved. +** Copyright (C) 2000-2002 Trolltech AS. All rights reserved. ** -** This file is part of Qtopia Environment. +** This file is part of the Qtopia Environment. ** ** This file may be distributed and/or modified under the terms of the ** GNU General Public License version 2 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ** See http://www.trolltech.com/gpl/ for GPL licensing information. ** ** Contact info@trolltech.com if any conditions of this licensing are ** not clear to you. ** **********************************************************************/ #include "menubutton.h" #include <qpopupmenu.h> /*! \class MenuButton menubutton.h \brief The MenuButton class is a pushbutton with a menu. - Similar in function to a QComboBox. + When the user presses the menubutton's pushbutton, the menu pops up. + A menu is composed of menu items each of which has a string label, + and optionally an icon. + + The index of the item that the user's input device (e.g. stylus) is + pointing at is the currentItem(), whose text is available using + currentText(). + + Menu items are inserted with the \link MenuButton::MenuButton() + constructor\endlink, insertItem() or insertItems(). Separators are + inserted with insertSeparator(). All the items in the menu can be + removed by calling clear(). + + Items can be selected programmatically using select(). When a menu + item is selected (programmatically or by the user), the selected() + signal is emitted. + + \ingroup qtopiaemb */ /*! - \fn void MenuButton::selected(int index) + \overload void MenuButton::selected(int index) - This signal is emitted when the item at \a index is selected. + This signal is emitted when the item at position \a index is selected. */ /*! \fn void MenuButton::selected(const QString& text) - This signal is emitted when the item with the given \a text is selected. + This signal is emitted when the item with the label \a text is selected. */ /*! - Constructs a MenuButton with the given \a items added (see insertItems()). - The standard \a parent an \a name arguments are passed to the base class. + Constructs a MenuButton. A menu item is created (see insertItem() + and insertItems()) for each string in the \a items string list. The + standard \a parent an \a name arguments are passed to the base + class. */ MenuButton::MenuButton( const QStringList& items, QWidget* parent, const char* name) : QPushButton(parent,name) { init(); insertItems(items); } /*! Constructs an empty MenuButton. The standard \a parent an \a name arguments are passed to the base class. - \sa insertItems() + \sa insertItem() insertItems() */ MenuButton::MenuButton( QWidget* parent, const char* name) : QPushButton(parent,name) { init(); } void MenuButton::init() { setAutoDefault(FALSE); pop = new QPopupMenu(this); nitems=0; connect(pop, SIGNAL(activated(int)), this, SLOT(select(int))); setPopup(pop); //setPopupDelay(0); } /*! - Removes all items from the button and menu. + Removes all the menu items from the button and menu. */ void MenuButton::clear() { delete pop; init(); } /*! - Inserts string \a items into the menu. The string "--" represents - a separator. + A menu item is created (see insertItem()) for each string in the \a + items string list. If any string is "--" a separator (see + insertSeparator()) is inserted in its place. */ void MenuButton::insertItems( const QStringList& items ) { QStringList::ConstIterator it=items.begin(); for (; it!=items.end(); ++it) { if ( (*it) == "--" ) insertSeparator(); else insertItem(*it); } } /*! - Inserts an \a icon and \a text into the menu. + Inserts a menu item with the icon \a icon and label \a text into + the menu. + + \sa insertItems() */ -void MenuButton::insertItem( const QIconSet& icon, const QString& text ) +void MenuButton::insertItem( const QIconSet& icon, const QString& text=QString::null ) { pop->insertItem(icon, text, nitems++); if ( nitems==1 ) select(0); } /*! - Inserts \a text into the menu. + \overload + Inserts a menu item with the label \a text into the menu. + + \sa insertItems() */ void MenuButton::insertItem( const QString& text ) { pop->insertItem(text, nitems++); if ( nitems==1 ) select(0); } /*! - Inserts a visual separator into the menu. + Inserts a separator into the menu. + + \sa insertItems() */ void MenuButton::insertSeparator() { pop->insertSeparator(); } /*! - Selects the items with text \a s. + Selects the items with label text \a s. */ void MenuButton::select(const QString& s) { for (int i=0; i<nitems; i++) { if ( pop->text(i) == s ) { select(i); break; } } } /*! - Selects the item at index \a s. + \overload + Selects the item at index position \a s. */ void MenuButton::select(int s) { cur = s; updateLabel(); if ( pop->iconSet(cur) ) setIconSet(*pop->iconSet(cur)); emit selected(cur); emit selected(currentText()); } /*! - Returns the index of the current item. + Returns the index position of the current item. */ int MenuButton::currentItem() const { return cur; } /*! - Returns the text of the current item. + Returns the label text of the current item. */ QString MenuButton::currentText() const { return pop->text(cur); } /*! - Sets the label. If \a label is empty, the + Sets the menubutton's label. If \a label is empty, the current item text is displayed, otherwise \a label should contain "%1", which will be replaced by the current item text. */ void MenuButton::setLabel(const QString& label) { lab = label; updateLabel(); } void MenuButton::updateLabel() { QString t = pop->text(cur); if ( !lab.isEmpty() ) t = lab.arg(t); setText(t); } |