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tdelibs/kdeui/kjanuswidget.h

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/* This file is part of the KDE Libraries
* Copyright (C) 1999-2000 Espen Sand (espen@kde.org)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef _KJANUS_WIDGET_H_
#define _KJANUS_WIDGET_H_
#include <qptrlist.h>
#include <qpixmap.h>
#include <qsplitter.h>
#include <klistbox.h>
#include <qstringlist.h>
#include <qmap.h>
class KListView;
class QGrid;
class QHBox;
class QLabel;
class QTabWidget;
class QVBox;
class QWidgetStack;
class KSeparator;
class QListViewItem;
class KGuiItem;
/**
* @short Easy to use widget with many layouts
*
* Provides a number of ready to use layouts (faces). It is used
* as an internal widget in KDialogBase, but can also used as a
* widget of its own.
*
* This class provides KJanusWidget::TreeList, KJanusWidget::IconList,
* KJanusWidget::Tabbed, KJanusWidget::Plain and KJanusWidget::Swallow layouts.
*
* For all modes it is important that you specify the QWidget::minimumSize()
* on the page, plain widget or the swallowed widget. If you use a QLayout
* on the page, plain widget or the swallowed widget this will be taken care
* of automatically. The size is used when the KJanusWidget determines its
* own minimum size. You get the minimum size by using the
* minimumSizeHint() or sizeHint() methods.
*
* Pages that have been added in TreeList, IconList or Tabbed mode can be
* removed by simply deleting the page. However, it would be preferable to use
* the QObject::deleteLater() function on the page as the main event loop
* may have optimized UI update events of the page by scheduling them for later.
*
* @author Espen Sand (espen@kde.org)
*/
class KDEUI_EXPORT KJanusWidget : public QWidget
{
Q_OBJECT
private:
class IconListBox : public KListBox
{
public:
IconListBox( QWidget *parent=0, const char *name=0, WFlags f=0 );
void updateMinimumHeight();
void updateWidth();
void invalidateHeight();
void invalidateWidth();
void setShowAll( bool showAll );
private:
bool mShowAll;
bool mHeightValid;
bool mWidthValid;
};
public:
enum Face
{
/**
* The TreeList face provides a list in the left area and pages in the
* right. The area are separated by a movable splitter. The style is somewhat
* similar to the layout in the Control Center. A page is raised by
* selecting the corresponding tree list item.
*/
TreeList = 0,
/** The Tabbed face is a common tabbed widget. The procedure for creating a
* page is similar for creating a TreeList. This has the advantage that if
* your widget contain too many pages it is trivial to convert it into a
* TreeList. Just change the face in the KJanusWidget constructor to
* KJanusWidget::TreeList and you have a tree list layout instead.
*/
Tabbed,
/**
* The Plain face provides an empty widget (QFrame) where you can place your
* widgets. The KJanusWidget makes no assumptions regarding the contents so
* you are free to add whatever you want.
*/
Plain,
/**
* The Swallow face is provided in order to simplify the usage of existing
* widgets and to allow changing the visible widget. You specify the widget
* to be displayed by setSwallowedWidget(). Your widget will be
* reparented inside the widget. You can specify a Null (0) widget. A empty
* space is then displayed.
*/
Swallow,
/**
* The IconList face provides an icon list in the left area and pages in the
* right. For each entry the Icon is on top with the text below. The style
* is somewhat similar to the layout of the Eudora configuation dialog box.
* A page is raised by selecting the corresponding icon list item. The
* preferred icon size is 32x32 pixels.
*/
IconList
};
public:
/**
* Constructor where you specify the face.
*
* @param parent Parent of the widget.
* @param name Widget name.
* @param face The kind of dialog, Use TreeList, Tabbed, Plain or
* Swallow.
*/
KJanusWidget( QWidget *parent=0, const char *name=0, int face=Plain );
/**
* Destructor.
*/
~KJanusWidget();
/**
* Raises the page which was added by addPage().
*
* @param index The index of the page you want to raise.
*/
virtual bool showPage( int index );
/**
* Returns the index of the page that are currently displayed.
*
* @return The index or -1 if the face is not Tabbed, TreeList or
* IconList.
*/
virtual int activePageIndex() const;
/**
* Use this to verify
* that no memory allocation failed.
*
* @return true if the widget was properly created.
*/
virtual bool isValid() const;
/**
* Returns the face type.
*
* @return The face type.
*/
virtual int face() const;
/**
* Returns the minimum size that must be made available for the widget
* so that UIs can be displayed properly
*
* @return The minimum size.
*/
virtual QSize minimumSizeHint() const;
/**
* Returns the recommended size for the widget in order to be displayed
* properly.
*
* @return The recommended size.
*/
virtual QSize sizeHint() const;
/**
* Returns the empty widget that is available in Plain mode.
*
* @return The widget or 0 if the face in not Plain.
*/
virtual QFrame *plainPage();
/**
* Add a new page when the class is used in TreeList, IconList or Tabbed
* mode. The returned widget is empty and you must add your widgets
* as children to this widget. In most cases you must create a layout
* manager and associate it with this widget as well.
*
* Deleting the returned frame will cause the listitem or tab to be
* removed (you can re-add a page with the same name later.
*
* @param item String used in the list or Tab item.
* @param header A longer string used in TreeList and IconList mode to
* describe the contents of a page. If empty, the item string
* will be used instead.
* @param pixmap Used in IconList mode or in TreeList mode. You should
* prefer a pixmap with size 32x32 pixels.
*
* @return The empty page or 0 if the face is not TreeList, IconList or
* Tabbed.
*/
virtual QFrame *addPage(const QString &item,const QString &header=QString::null,
const QPixmap &pixmap=QPixmap() );
/**
* This is like addPage just above, with the difference that the first
* element is a list of strings. These strings are used to form a path
* of folders down to the given page. The initial elements are names
* for the folders, while the last element is the name of the page.
* Note: This does yet only work for the TreeList face. Later this may
* be added for the IconList face too. In other faces than the
* TreeList, all the strings except the last one is ignored.
* Deleting the returned frame will cause the listitem or tab to be
* removed (you can re-add a page with the same name later.
*
* Deleting the returned frame will cause the listitem or tab to be
* removed (you can re-add a page with the same name later.
**/
virtual QFrame *addPage(const QStringList &items, const QString &header=QString::null,
const QPixmap &pixmap=QPixmap() );
/**
* Add a new page when the class is used in TreeList, IconList or Tabbed
* mode. The returned widget is empty and you must add your widgets
* as children to this widget. The returned widget is a QVBox
* so it contains a QVBoxLayout layout that lines up the child widgets
* are vertically.
*
* Deleting the returned frame will cause the listitem or tab to be
* removed (you can re-add a page with the same name later.
*
* @param item String used in the list or Tab item.
* @param header A longer string used in TreeList and IconList mode to
* describe the contents of a page. If empty, the item string
* will be used instead.
* @param pixmap Used in IconList mode or in TreeList mode. You should
* prefer a pixmap with size 32x32 pixels.
*
* @return The empty page or 0 if the face is not TreeList, IconList or
* Tabbed. */
virtual QVBox *addVBoxPage( const QString &item,
const QString &header=QString::null,
const QPixmap &pixmap=QPixmap() );
/**
* This is like addVBoxPage just above, with the difference that the first
* element is a list of strings. These strings are used to form a path
* of folders down to the given page. The initial elements are names
* for the folders, while the last element is the name of the page.
* Note: This does yet only work for the TreeList face. Later this may
* be added for the IconList face too. In other faces than the
* TreeList, all the strings except the last one is ignored.
*
* Deleting the returned frame will cause the listitem or tab to be
* removed (you can re-add a page with the same name later.
**/
virtual QVBox *addVBoxPage( const QStringList &items,
const QString &header=QString::null,
const QPixmap &pixmap=QPixmap() );
/**
* Add a new page when the class is used in TreeList, IconList or Tabbed
* mode. The returned widget is empty and you must add your widgets
* as children to this widget. The returned widget is a QHBox
* so it contains a QHBoxLayout layout that lines up the child widgets
* are horizontally.
*
* Deleting the returned frame will cause the listitem or tab to be
* removed (you can re-add a page with the same name later.
*
* @param itemName String used in the list or Tab item.
* @param header A longer string used in TreeList and IconList mode to
* describe the contents of a page. If empty, the item string
* will be used instead.
* @param pixmap Used in IconList mode or in TreeList mode. You should
* prefer a pixmap with size 32x32 pixels.
*
* @return The empty page or 0 if the face is not TreeList, IconList or
* Tabbed.
*/
virtual QHBox *addHBoxPage( const QString &itemName,
const QString &header=QString::null,
const QPixmap &pixmap=QPixmap() );
/**
* This is like addHBoxPage just above, with the difference that the first
* element is a list of strings. These strings are used to form a path
* of folders down to the given page. The initial elements are names
* for the folders, while the last element is the name of the page.
* Note: This does yet only work for the TreeList face. Later this may
* be added for the IconList face too. In other faces than the
* TreeList, all the strings except the last one is ignored.
*
* Deleting the returned frame will cause the listitem or tab to be
* removed (you can re-add a page with the same name later.
**/
virtual QHBox *addHBoxPage( const QStringList &items,
const QString &header=QString::null,
const QPixmap &pixmap=QPixmap() );
/**
* Add a new page when the class is used in either TreeList or Tabbed
* mode. The returned widget is empty and you must add your widgets
* as children to this widget. The returned widget is a QGrid
* so it contains a QGridLayout layout that places up the child widgets
* in a grid.
*
* Deleting the returned frame will cause the listitem or tab to be
* removed (you can re-add a page with the same name later.
*
* @param n Specifies the number of columns if 'dir' is QGrid::Horizontal
* or the number of rows if 'dir' is QGrid::Vertical.
* @param dir Can be QGrid::Horizontal or QGrid::Vertical.
* @param itemName String used in the list or Tab item.
* @param header A longer string used in TreeList and IconList mode to
* describe the contents of a page. If empty, the item string
* will be used instead.
* @param pixmap Used in IconList mode or in TreeList mode. You should
* prefer a pixmap with size 32x32 pixels.
*
* @return The empty page or 0 if the face is not TreeList, IconList or
* Tabbed.
*/
virtual QGrid *addGridPage( int n, Orientation dir,
const QString &itemName,
const QString &header=QString::null,
const QPixmap &pixmap=QPixmap() );
/**
* This is like addGridPage just above, with the difference that the first
* element is a list of strings. These strings are used to form a path
* of folders down to the given page. The initial elements are names
* for the folders, while the last element is the name of the page.
* Note: This does yet only work for the TreeList face. Later this may
* be added for the IconList face too. In other faces than the
* TreeList, all the strings except the last one is ignored.
*
* Deleting the returned frame will cause the listitem or tab to be
* removed (you can re-add a page with the same name later.
**/
virtual QGrid *addGridPage( int n, Orientation dir,
const QStringList &items,
const QString &header=QString::null,
const QPixmap &pixmap=QPixmap() );
/**
* @short Removes a page created with addPage, addVBoxPage,
* addHBoxPage or addGridPage. If the page has already
* been deleted or has already been removed, nothing happens. The widget
* itself is not deleted.
*
* @param page The widget returned by addPage , addVBoxPage ,
* addHBoxPage or addGridPage .
*/
void removePage( QWidget *page );
/**
* Returns the index of a page created with addPage ,
* addVBoxPage , addHBoxPage or addGridPage .
* You can can compare this index with the value returned from
* activePageIndex if you need to do some page specific actions
* in your code.
*
* The returned index will never change so you can safely use this
* function once and save the value.
*
* @param widget The widget returned by addPage , addVBoxPage ,
* addHBoxPage or addGridPage .
*
* @return The index or -1 if the face is not Tabbed, TreeList or
* IconList
*/
virtual int pageIndex( QWidget *widget ) const;
/**
* Defines the widget to be swallowed.
*
* This method can be used several
* times. Only the latest defined widget will be shown.
*
* @param widget The widget to be swallowed. If 0, then an empty rectangle
* is displayed.
*/
virtual bool setSwallowedWidget( QWidget *widget );
/**
* This function has only effect in TreeList mode.
*
* Defines how the tree list is resized when the widget is resized
* horizontally. By default the tree list keeps its width when the
* widget becomes wider.
*
* @param state The resize mode. If false (default) the TreeList keeps
* its current width when the widget becomes wider.
*/
virtual void setTreeListAutoResize( bool state );
/**
* This function has only effect in TreeList mode.
*
* This tells the widgets whether the icons given in the addPage,
* addVBoxPage, addHBoxPage, or addGridPage methods should
* be shown in the TreeList.
*
* Note: This method must be called before calling any of the methods
* which add icons to the page.
*
* @param state If true the icons are shown.
**/
virtual void setShowIconsInTreeList(bool state);
/**
* This function has only effect in TreeList mode.
*
* This tells the widgets whether the root should be decorated.
* For details see QListView::setRootIsDecorated
*
* @param state Root will be decorated if true.
**/
virtual void setRootIsDecorated( bool state );
/**
* This function has only effect in TreeList mode.
*
* This tells the TreeList to unfold the whole tree so that all entries
* are visible.
*
* If the list is empty when you call this method newly created entries
* will not automatically be opened. If the @p persist flag is set opened
* entries cannot be closed again, though.
*
* @param persist If true the tree always stays unfolded.
* @since 3.2
*/
/*virtual*/ void unfoldTreeList( bool persist = false ); //### KDE4 BIC add virtual
/**
* Add a widget at the bottom of the TreeList/IconList.
*
* @param widget The widget to be added. It will be reparented into the
* KJanusWidget, therefor it will be deleted with the
* KJanusWidget, too. To be on the save side just don't keep
* the pointer to this widget.
*/
/*virtual*/ void addWidgetBelowList( QWidget * widget ); // ### KDE4
/**
* Add a button at the bottom of the TreeList/IconList.
*
* @param text The text on the PushButton.
* @param recv The object that is to receive the signal when the button
* is clicked.
* @param slot The slot to connect to the clicked signal of the button.
*
* @since 3.2
*/
/*virtual*/ void addButtonBelowList( const QString & text, QObject * recv,
const char * slot ); //### KDE4
/**
* The same as the above function, but with a KGuiItem providing the text
* and icon for the button at the bottom of the TreeList/IconList.
*
* @param guiitem The text and icon on the PushButton.
* @param recv The object that is to receive the signal when the button
* is clicked.
* @param slot The slot to connect to the clicked signal of the button.
*
* @since 3.2
*/
/*virtual*/ void addButtonBelowList( const KGuiItem & guiitem, QObject *
recv, const char * slot ); //### KDE4
/**
* This function has only effect in IconList mode.
*
* Defines how the icon list widget is displayed. By default it is
* the widgets in the pages that decide the minimum height
* of the toplevel widget. A vertical scrollbar can be used in
* the icon list area.
*
* @param state The visibility mode. If true, the minimum height is
* adjusted so that every icon in the list is visible at the
* same time. The vertical scrollbar will never be visible.
*/
virtual void setIconListAllVisible( bool state );
/**
* Sets the icon used in TreeList Mode for the given path.
* @param path The path for which this icon should be shown.
* @param pixmap The icon used.
**/
virtual void setFolderIcon(const QStringList &path, const QPixmap &pixmap);
/**
* Returns the title string associated with a page index in TreeList or IconList mode.
* @param index The index of the page or null if there is no such page.
* @see pageIndex()
* @since 3.2
*/
/*virtual*/ QString pageTitle(int index) const;
/**
* Returns the page widget associated with a page index or null if there is
* no such page.
* @param index The index of the page.
* @see pageIndex()
* @since 3.2
*/
/*virtual*/ QWidget *pageWidget(int index) const;
signals:
/**
* This signal is emitted whenever the current page changes.
* @param page the new page.
* @since 3.4
*/
void aboutToShowPage(QWidget *page);
public slots:
/**
* Give the keyboard input focus to the widget.
*/
virtual void setFocus();
protected:
/**
* Reimplemented to handle the splitter width when the the face
* is TreeList
*/
virtual void showEvent( QShowEvent * );
/**
* This function is used internally when in IconList mode. If you
* reimplement this class a make your own event filter, make sure to
* call this function from your filter.
*
* @param o Object that has received an event.
* @param e The event.
*/
virtual bool eventFilter( QObject *o, QEvent *e );
private slots:
bool slotShowPage();
void slotFontChanged();
void slotItemClicked(QListViewItem *it);
void pageGone(QObject *obj); // signal from the added page's "destroyed" signal
void slotReopen(QListViewItem *item);
protected:
bool showPage( QWidget *w );
void addPageWidget( QFrame *page, const QStringList &items,
const QString &header, const QPixmap &pixmap );
void InsertTreeListItem(const QStringList &items, const QPixmap &pixmap, QFrame *page);
QWidget *FindParent();
private:
bool mValid;
// Obsolete members. Remove in KDE 4.
QPtrList<QWidget> *mPageList;
QStringList *mTitleList;
int mFace;
KListView *mTreeList;
IconListBox *mIconList;
QWidgetStack *mPageStack;
QLabel *mTitleLabel;
QTabWidget *mTabControl;
QFrame *mPlainPage;
QWidget *mSwallowPage;
QWidget *mActivePageWidget;
KSeparator *mTitleSep;
QSplitter::ResizeMode mTreeListResizeMode;
bool mShowIconsInTreeList;
QMap<QListViewItem *, QWidget *> mTreeListToPageStack;
QMap<QListBoxItem *, QWidget *> mIconListToPageStack;
QMap<QString, QPixmap> mFolderIconMap;
QMap<QString, QStringList> mChildrenNames;
QMap<QString, QWidget *> mChildPages;
public:
class IconListItem;
protected:
virtual void virtual_hook( int id, void* data );
private:
class KJanusWidgetPrivate;
KJanusWidgetPrivate *d;
};
#endif
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