FileSelector with the optional thumbnail preview for images.

Work in progress...

2 files changed, 412 insertions, 0 deletions

diff --git a/noncore/multimedia/showimg/ImageFileSelector.cpp b/noncore/multimedia/showimg/ImageFileSelector.cpp
new file mode 100644
index 0000000..347300f
--- a/dev/null
+++ b/noncore/multimedia/showimg/ImageFileSelector.cpp
@@ -0,0 +1,277 @@
+
+
+#include "qpe/global.h"
+#include "qpe/applnk.h"
+#include "qpe/lnkproperties.h"
+#include "qpe/applnk.h"
+#include "qpe/qpeapplication.h"
+
+#include <stdlib.h>
+
+#include <qdir.h>
+#include <qwidget.h>
+#include <qheader.h>
+#include <qimage.h>
+#include <qpixmap.h>
+#include <qlabel.h>
+#include <qfileinfo.h>
+#include <qpainter.h>
+#include <qscrollview.h>
+
+#include "ImageFileSelector.h"
+
+
+
+
+
+ThumbWidget::ThumbWidget(QPixmap p,QString text,const DocLnk& f,QWidget *parent,int w) : QWidget( parent ),fl(f)
+{
+    setBackgroundMode(NoBackground);  
+    if ( w!=-1 )
+        setMinimumSize(w,p.height()+24);
+    else
+        setMinimumSize(p.width(),p.height()+24);
+    description=new QLabel(text,this);
+    description->setBackgroundColor(colorGroup().base());
+    description->setAlignment(AlignCenter);
+    description->setGeometry(0,height()-24,width(),24);
+    pixmap=p;
+}
+
+void ThumbWidget::resizeEvent(QResizeEvent *e)
+{
+    description->setGeometry(0,height()-24,width(),24);
+}
+
+void ThumbWidget::paintEvent( QPaintEvent *e )
+{
+    QPainter painter(this);
+
+    painter.setClipRect(e->rect());
+    painter.fillRect(0,0,width(),height(),QColor(255,255,255));
+    painter.drawPixmap((width() - pixmap.width()) / 2,0, pixmap);
+
+}
+
+void ThumbWidget::mouseReleaseEvent(QMouseEvent* event)
+{
+    emit clicked(fl);
+}
+
+
+
+
+ImageFileSelectorItem::ImageFileSelectorItem( QListView *parent, const DocLnk &f): QListViewItem( parent ), fl( f )
+{
+    setText( 0, f.name() );
+    QFileInfo fi(f.file());
+    setText( 1, (fi.extension()).upper() );
+    setPixmap( 0, f.pixmap() );
+
+
+}
+
+
+ImageFileSelectorItem::~ImageFileSelectorItem()
+{
+    
+}
+
+
+ImageFileSelector::ImageFileSelector( CURRENT_VIEW scv,QWidget *parent,const char *name ):QWidgetStack(parent)
+{
+
+    detailed=new QListView(this);
+
+    detailed->addColumn (tr("Title")); 
+    detailed->addColumn (tr("Type")); 
+    detailed->setAllColumnsShowFocus( true );
+
+    tList.setAutoDelete(true);
+
+    thumb =new QScrollView(this);
+    thumb->setVScrollBarMode (QScrollView::Auto );
+    thumb->viewport()->setBackgroundColor(colorGroup().base());
+
+    background=new QWidget(0);
+    background->setBackgroundColor(colorGroup().base());
+    thumb->addChild(background);
+    gl = new QGridLayout(background,1,2,4,4);
+
+
+
+    connect( detailed, SIGNAL( mouseButtonClicked( int, QListViewItem *, const QPoint &, int ) ),
+             this, SLOT( fileClicked( int, QListViewItem *, const QPoint &, int ) ) );
+    connect( detailed, SIGNAL( mouseButtonPressed( int, QListViewItem *, const QPoint &, int ) ),
+             this, SLOT( filePressed( int, QListViewItem *, const QPoint &, int ) ) );
+    connect( detailed, SIGNAL( returnPressed( QListViewItem * ) ),
+             this, SLOT( fileClicked( QListViewItem * ) ) );
+
+    cView=UNKNOWN;
+    setView(scv);
+    reread();    
+
+}
+ImageFileSelector::~ImageFileSelector()
+{
+    
+}
+
+
+void ImageFileSelector::switchView()
+{
+    CURRENT_VIEW v=cView;
+
+    if ( v==DETAILED )
+        v=THUMBNAIL;
+    else
+        v=DETAILED;
+    setView(v);
+}
+
+void ImageFileSelector::setView(CURRENT_VIEW v)
+{
+
+    if ( v==cView )
+        return;
+    cView=v;
+
+    if ( cView!=DETAILED )
+    {
+        raiseWidget(thumb);            
+        updateSizes();
+    }
+    else
+    {
+        raiseWidget(detailed);              
+        updateSizes();
+    }
+
+
+}
+
+void ImageFileSelector::resizeEvent(QResizeEvent *)
+{
+    updateSizes();
+}
+
+void ImageFileSelector::updateSizes()
+{
+    int ww=(detailed->width()-detailed->frameWidth()*2);
+    double w=(double)ww*0.70;
+    detailed->setColumnWidth(0,(int)w);
+    detailed->setColumnWidth(1,ww-(int)w);
+    background->setMinimumWidth(thumb->visibleWidth());
+    thumb->updateScrollBars(); 
+}
+
+void ImageFileSelector::reread(bool purgeCache)
+{
+    ImageFileSelectorItem *item = (ImageFileSelectorItem *)detailed->selectedItem();
+    QString oldFile;
+    if ( item )
+        oldFile = item->file().file();
+    detailed->clear();
+    tList.clear();
+    DocLnkSet files;
+    Global::findDocuments(&files, "image/*");
+    count = files.children().count();
+    QListIterator<DocLnk> dit( files.children() );
+    int y=0;
+    int x=4;
+    int totalHeight=4;
+    ThumbWidget *l=0;
+    int width=80;
+    gl->expand(dit.count()/2,2);
+
+    int i,j;
+
+    i=j=0;
+
+    detailed->setUpdatesEnabled(false);
+    thumb->setUpdatesEnabled(false);
+    for ( ; dit.current(); ++dit )
+    {
+        item = new ImageFileSelectorItem( detailed, **dit );        
+        if ( item->file().file() == oldFile )
+            detailed->setCurrentItem( item );
+    }
+
+    QListViewItemIterator it( detailed );
+    ImageFileSelectorItem *ii;
+    // iterate through all items of the listview
+    for ( ; it.current(); ++it )
+    {
+        ii=(ImageFileSelectorItem *)it.current();
+        QImage img(ii->file().file());
+        img=img.smoothScale(64,64);
+        QPixmap pix;
+        pix.convertFromImage(img);                
+        l=new ThumbWidget(pix,ii->file().name(),ii->file(),background,width);
+        l->setBackgroundColor(colorGroup().base());        
+        gl->addWidget(l,j,i);
+        i++;
+        if ( i==2 )
+        {
+            i=0;
+            j++;
+        }
+        tList.append(l);
+        connect(l,SIGNAL(clicked(const DocLnk &)),this,SLOT(thumbClicked(const DocLnk &)));
+        
+    }
+
+
+
+    if ( !detailed->selectedItem() )
+        detailed->setCurrentItem( detailed->firstChild() );
+
+    detailed->setUpdatesEnabled(true);
+    thumb->setUpdatesEnabled(true);
+    detailed->update();
+    thumb->update();
+
+}
+
+int ImageFileSelector::fileCount()
+{
+    return count;
+}
+const DocLnk * ImageFileSelector::selected()
+{
+    ImageFileSelectorItem *item = (ImageFileSelectorItem *) detailed->selectedItem();
+    if ( item )
+        return new DocLnk( item->file() );
+    return 0;
+}
+
+
+
+void ImageFileSelector::fileClicked( int button, QListViewItem *i, const QPoint &, int )
+{
+    if ( !i )
+        return;
+    if ( button == Qt::LeftButton )
+    {
+        fileClicked( i );
+    }
+}
+    // pressed to get 'right down'
+void ImageFileSelector::filePressed( int, QListViewItem *, const QPoint &, int )
+{
+    
+}
+void ImageFileSelector::fileClicked( QListViewItem *i)
+{
+    if ( !i )
+        return;
+    emit fileSelected( ( (ImageFileSelectorItem*)i )->file() );
+    emit closeMe();     
+}
+
+void ImageFileSelector::thumbClicked(const DocLnk &f)
+{
+    emit fileSelected( f );
+    emit closeMe();     
+}
+
diff --git a/noncore/multimedia/showimg/ImageFileSelector.h b/noncore/multimedia/showimg/ImageFileSelector.h
new file mode 100644
index 0000000..2c346c4
--- a/dev/null
+++ b/noncore/multimedia/showimg/ImageFileSelector.h
@@ -0,0 +1,135 @@
+#ifndef IMAGEFILE_SELECTOR_H
+#define IMAGEFILE_SELECTOR_H
+
+
+#include <qtoolbutton.h>
+#include <qlistview.h>
+#include <qwidgetstack.h>
+#include <qlayout.h>
+
+#include "qpe/filemanager.h"
+#include "qpe/applnk.h"
+
+class QScrollView;
+class QLabel;
+
+class ThumbWidget : public QWidget
+{
+    Q_OBJECT
+    public:
+    ThumbWidget(QPixmap p,QString text,const DocLnk& f,QWidget *parent=0,int width=-1);
+    ~ThumbWidget()
+    {
+        
+    }
+
+    DocLnk file() const
+    {
+        return fl;
+    } 
+    
+
+    signals:
+    void clicked(const DocLnk &);
+
+protected:
+    void paintEvent( QPaintEvent * );
+    void resizeEvent(QResizeEvent *);
+    
+    void mouseReleaseEvent(QMouseEvent* event);
+
+private:
+    QPixmap pixmap;
+    QLabel  *description;
+    DocLnk fl;    
+};
+
+
+class ImageFileSelector : public QWidgetStack
+{
+    Q_OBJECT
+
+    public:
+
+    enum CURRENT_VIEW
+    {
+        THUMBNAIL,
+        DETAILED,
+        UNKNOWN
+    };
+
+
+    ImageFileSelector(CURRENT_VIEW scv=DETAILED, QWidget *parent=0, const char *name=0 );
+    ~ImageFileSelector();
+
+    void reread(bool purgeCache=false);
+    int fileCount();
+    const DocLnk *selected();
+
+    void setView(CURRENT_VIEW v);
+
+    CURRENT_VIEW view()
+    {
+        return cView;
+    }
+
+
+public slots:
+
+    void switchView();
+
+signals:
+    void fileSelected( const DocLnk & );
+    void closeMe();
+
+protected:
+
+    void resizeEvent(QResizeEvent *);
+
+
+private slots:
+    void fileClicked( int, QListViewItem *, const QPoint &, int );
+    // pressed to get 'right down'
+    void filePressed( int, QListViewItem *, const QPoint &, int );
+    void fileClicked( QListViewItem *);
+    void thumbClicked(const DocLnk &);
+
+private:
+
+    void updateSizes();
+
+
+    CURRENT_VIEW    cView;  
+    int     count;
+
+    QListView   *detailed;
+    QScrollView *thumb;
+    QList<ThumbWidget> tList;
+    QWidget *background;
+    QGridLayout *gl;
+
+};
+
+
+class ImageFileSelectorItem : public QListViewItem
+{
+public:
+    ImageFileSelectorItem( QListView *parent, const DocLnk& f );
+    ~ImageFileSelectorItem();
+
+    DocLnk file() const
+    {
+        return fl;
+    } 
+
+
+private:
+    DocLnk fl;
+};
+
+
+
+
+#endif // IMAGEFILE_SELECTOR_H
+
+