author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 15:09:22 +0300 | |
branch | RCL_3 |
changeset 65 | ae942d28ec0e |
permissions | -rw-r--r-- |
65
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/******************************************************************************* |
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. This program and the accompanying materials |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* which accompanies this distribution, and is available at |
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* http://www.eclipse.org/legal/epl-v10.html |
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* |
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* Contributors: |
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* Nokia Corporation - initial implementation |
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*******************************************************************************/ |
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#ifndef SWT_LISTDATAMODEL_H |
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#define SWT_LISTDATAMODEL_H |
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#include <QAbstractListModel> |
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#include <QItemDelegate> |
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#include <QTextLayout> |
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#include <QItemSelection> |
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#include <QList> |
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#include "jniutils.h" |
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class QListView; |
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namespace Java { namespace eSWT { |
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class ListItem |
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{ |
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public: |
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ListItem( const QString& aText ); |
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virtual ~ListItem(); |
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const QString& text() const; |
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virtual const QPixmap* image() const; |
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void setText(const QString& string); |
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Qt::CheckState checkState() const; |
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void setCheckState( Qt::CheckState state ); |
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protected: |
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Qt::CheckState state; |
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QString txt; |
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}; |
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class ListBoxItem : public ListItem |
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{ |
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public: |
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ListBoxItem(const QString& aDetailText, const QPixmap** aDetailImages, const int aDetailImageCount, |
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const QString& aHeadingText, const QPixmap** aHeadingImages, const int aHeadingImageCount ); |
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~ListBoxItem(); |
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const QString& headingText() const; |
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const QList<QPixmap>& detailImages() const ; |
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const QList<QPixmap>& headingImages() const; |
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int detailImageCount() const; |
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int headingImageCount() const; |
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void setContentsToNull(); |
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private: |
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QString headingTxt; |
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QList<QPixmap> detailImgs; |
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QList<QPixmap> headingImgs; |
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}; |
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class ListModel : public QAbstractListModel |
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{ |
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public: |
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ListModel( int type, int style, QListView *parent ); |
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~ListModel(); |
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/** |
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* from QAbstractListModel |
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*/ |
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int rowCount(const QModelIndex& parent) const; |
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QVariant data(const QModelIndex& index, int role) const; |
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Qt::ItemFlags flags ( const QModelIndex& index ) const; |
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/** |
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* called by JNI, these calls are delegated to protected methods from QAbstractListModel |
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*/ |
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void beginInsertRows( const QModelIndex& parent, int first, int last ); |
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void endInsertRows(); |
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void beginRemoveRows( const QModelIndex& parent, int first, int last ); |
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void endRemoveRows(); |
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void emitLayoutAboutToBeChanged(); |
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void emitLayoutChanged(); |
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/** |
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* called by JNI |
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*/ |
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static ListModel* createDataModel( int type, int style, QListView *parent ); |
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const QString& itemString( const int row ) const; |
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jobjectArray itemStrings( JNIEnv* aJniEnv ); |
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int indexOf( const QString& string, const int start ) const; |
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int insertPosition(const QString& string, const bool ascent = true ); |
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void setCheckState( const QItemSelection& selection, Qt::CheckState state ); |
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void remove( const int row ); |
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void appendItem( const QString& string ); |
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void appendItem( const QString& string, const QPixmap* pixmap ); |
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void insertItem( const int row, const QString& string ); |
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void insertItem( const int row, const QString& string, const QPixmap* pixmap ); |
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virtual void appendItem(const QString& aDetailText, const QPixmap** aDetailImages, const int aDetailImageCount, |
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const QString& aHeadingText, const QPixmap** aHeadingImages, const int aHeadingImageCount ); |
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virtual int itemHeight(); |
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virtual void clearList(); |
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virtual void setItemContentsToNull( const int row ); |
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/** |
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* called by other native classes |
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*/ |
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int style() const; |
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protected: |
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virtual ListItem* createItem( const QString& string ); |
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virtual ListItem* createItem( const QString& string, const QPixmap* pixmap ); |
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virtual ListItem* createItem(const QString& aDetailText, const QPixmap** aDetailImages, const int aDetailImageCount, |
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const QString& aHeadingText, const QPixmap** aHeadingImages, const int aHeadingImageCount ); |
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protected: |
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const int listType; |
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const int layoutStyle; |
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/** |
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* data body |
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*/ |
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QList<ListItem*> list; |
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}; |
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|
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130 |
|
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class ListBoxModel : public ListModel |
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132 |
{ |
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public: |
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ListBoxModel( int type, int style, QListView *parent ); |
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~ListBoxModel(); |
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|
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/** |
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* from ListModel |
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*/ |
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void clearList(); |
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void appendItem(const QString& aDetailText, const QPixmap** aDetailImages, const int aDetailImageCount, |
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const QString& aHeadingText, const QPixmap** aHeadingImages, const int aHeadingImageCount ); |
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|
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/** |
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* Below 5 methods provide item data |
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*/ |
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const QString& headingText(const int row) const; |
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int detailImageCount( const int row ) const; |
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int headingImageCount( const int row ) const; |
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const QList<QPixmap>& detailImages(const int row ) const; |
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const QList<QPixmap>& headingImages( const int row ) const; |
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|
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/** |
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* called by ListBoxDelegate to save cached layout data to ListModel |
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* so that the ListBoxDelegate does not have to compute layout data from scratch |
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* whenever drawing a list item. |
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*/ |
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void updateLayoutData( const int row, const int rowHeight, const QPoint detailTxtSize, |
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const QPoint headingTxtSize, const int detailImgWidth, const int headingImgWidth ) const; |
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|
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/** |
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* Below 10 methods provide cached layout data |
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*/ |
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const int& detailImageWidth(const int index ) const; |
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const int& headingImageWidth(const int index ) const; |
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QPoint detailTextSize() const; |
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QPoint headingTextSize() const; |
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int detailImageCount() const; |
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int headingImageCount() const; |
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QPoint detailImageSize(const int row) const; |
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QPoint headingImageSize(const int row) const; |
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int rowWithMaxDetailTextSize() const; |
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int rowWithMaxHeadingTextSize() const; |
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void setItemContentsToNull( const int row ); |
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|
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protected: |
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/** |
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* from ListModel |
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*/ |
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ListItem* createItem(const QString& aDetailText, const QPixmap** aDetailImages, const int aDetailImageCount, |
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const QString& aHeadingText, const QPixmap** aHeadingImages, const int aHeadingImageCount ); |
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private: |
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/** |
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* layout data |
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*/ |
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|
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/** |
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* holds the index which item has the largest detail text size |
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*/ |
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int detailTxtIndex; |
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|
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/** |
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* holds the index which item has the largest heading text size |
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*/ |
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int headingTxtIndex; |
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/** |
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* holds the largest detail text size |
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*/ |
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mutable QPoint detailTxtSize; |
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/** |
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* holds the largest heading text size |
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*/ |
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mutable QPoint headingTxtSize; |
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/** |
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* holds the amount of columns for detail images |
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*/ |
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int detailImgCount; |
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/** |
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* holds the amount of columns for heading images |
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*/ |
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int headingImgCount; |
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/** |
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* holds maximum height of images |
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*/ |
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int imgHeight; |
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/** |
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* holds widths for every detail image columns |
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*/ |
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int* detailImgWidths; |
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/** |
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* holds widths for every heading image columns |
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*/ |
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int* headingImgWidths; |
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/** |
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* holds heights for every rows |
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*/ |
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mutable int* rowHeights; |
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/** |
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* holds entire width for all of detail images. |
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*/ |
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mutable int detailImgWidth; |
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/** |
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* holds entire width for all of heading images. |
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*/ |
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mutable int headingImgWidth; |
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}; |
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class ListBoxItemDelegate : public QItemDelegate |
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{ |
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Q_OBJECT |
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public: |
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ListBoxItemDelegate( QObject* parent ); |
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|
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// from QItemDelegate |
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void paint(QPainter * painter, const QStyleOptionViewItem& option, const QModelIndex& index ) const; |
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QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const; |
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// called from JNI |
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void setHeadingFont( QFont* font ); |
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private: |
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|
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/** |
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* compute sizes of checkbox, detailtext, headingtext, detailImage and headingImage. |
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*/ |
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void computeSizes( const QModelIndex& index, const QStyleOptionViewItem& option, QSize* checkSize, |
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QSize *headingImageSize, QSize* detailImageSize, QSize* headingTextSize, QSize* detailTextSize) const; |
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|
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/** |
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* add margins to checkbox, detailtext, headingtext, detailImage and headingImage. |
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*/ |
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void addMargins( const QStyleOptionViewItem &option, QSize* checkSize, |
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QSize* headingImageSize, QSize* detailImageSize, QSize* headingTextSize, QSize* detailTextSize ) const; |
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|
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/** |
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* compute item entire size for the item |
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*/ |
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QSize computeSize( const QStyleOptionViewItem &option, const QSize& check, const QSize& headingImage, |
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const QSize& detailImage, const QSize& headingText, const QSize& detailText ) const; |
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|
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/** |
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* layout checkbox, detailtext, headingtext, detailImage and headingImage within a given rectangle |
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* and adjust sizes and positions according to alignments from option |
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*/ |
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void layoutRects( const QStyleOptionViewItem &option, QRect* check, QRect *headingImage, |
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QRect* detailImage, QRect* headingText, QRect* detailText, bool hint ) const; |
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|
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/** |
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* layout checkbox, detailtext, headingtext, detailImage and headingImage within a given rectangle |
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*/ |
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void doLayout( const QStyleOptionViewItem &option, QRect* checkRect, QRect* headingImageRect, |
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QRect* detailImageRect, QRect* headingTextRect, QRect* detailTextRect ) const; |
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QStyleOptionViewItem setOptions(const QModelIndex &index, const QStyleOptionViewItem &option) const; |
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|
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QRect textRectangle(const int width, const QFont &font, const QString &text) const; |
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|
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int margin( const QStyleOptionViewItem &option ) const; |
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private: |
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void drawImages( QPainter* painter, const QStyleOptionViewItem &option, |
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const QRect imageRect, const QList<QPixmap>& images, const int* imageWidths, const int imageCount ) const; |
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private: |
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/** |
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* not own |
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*/ |
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const ListBoxModel* dataModel; |
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mutable QTextLayout textLayout; |
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QFont* headingFont; |
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}; |
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}} |
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#endif // SWT_LISTDATAMODEL_H |