QtItemDelegate for progress bars

[maxpayne]

hi,
i have a delegate used to draw progress bars in a tree widget.My application as top level items as well as child items.The no.of these items will not be know at compile time. My delegate has the following issues:

1. Draws an incomplete progress bar for top level items..i.e the bar has no boundaries..i can only see the left boundary..the remaining 3 sides of the rect are missing.

2.does not draw progress bar for child items..the text however changes.

The code is included as an attachment.i hope some one can point out where I'm going wrong.i guess it is option.rect that causing a problem but I'm not sure.

thanks!!

[maxpayne]

hi..i was very impressed by the example given by jpn and his snapshot (attached). Somehow i am failing to emulate the same in my application:

1. i dont see alternating row colors.

2. The boundary of the progress bar is not clear.

3. i would like to have the progress text beside the bar rather than within it.(like jpn's snapshot)

i hope some one can help me accomplish this. My delegate is as follows:

class JobViewDelegate : public QItemDelegate
{
 
 
public:
 
inline JobViewDelegate(MainWindow *mainWindow) : QItemDelegate(mainWindow){}
 
inline void paint(QPainter *painter,const QStyleOptionViewItem &option,const QModelIndex &index) const
{
 
        QProgressBar progressbar;
 
        if (index.column() != 1) {
             QItemDelegate::paint(painter, option, index);
             return;
         }
 
        QStyleOptionProgressBarV2 progressBarOption;
 
         QRect rect = option.rect;
         QSize size(rect.width()*3/4,rect.height()*3/4);
         rect.setSize(size);
 
         progressBarOption.state = QStyle::State_Enabled;
         progressBarOption.direction = QApplication::layoutDirection();
         progressBarOption.rect =rect;
         progressBarOption.fontMetrics = QApplication::fontMetrics();
 
         QPalette pal =  progressBarOption.palette;
         QColor col;
         col.setNamedColor("#05B8CC");
         pal.setColor(QPalette::Highlight,col);
         //pal.setColor(QPalette::HighlightedText,Qt::black);
         progressBarOption.palette = pal;
 
          progressBarOption.type =  QStyleOption::SO_ProgressBar;
         progressBarOption.version = 2 ;
 
         progressBarOption.minimum = 0;
         progressBarOption.maximum = 100;
         progressBarOption.textAlignment = Qt::AlignCenter;
         progressBarOption.textVisible = true;
 
         QModelIndex ind = index.parent();
 
         int progress = index.data(Qt::DisplayRole).toInt(); 
       // Set the progress and text values of the style option.
 
         progressBarOption.progress = progress < 0 ? 0 : progress;
         progressBarOption.text = QString("%1%").arg(progressBarOption.progress);
 
         // Draw the progress bar onto the view.
         QApplication::style()->drawControl(QStyle::CE_ProgressBar, &progressBarOption, painter,0);
     }
};

class JobViewDelegate : public QItemDelegate
{
 

public:

inline JobViewDelegate(MainWindow *mainWindow) : QItemDelegate(mainWindow){}

inline void paint(QPainter *painter,const QStyleOptionViewItem &option,const QModelIndex &index) const
{
        
        QProgressBar progressbar;
        
        if (index.column() != 1) {
             QItemDelegate::paint(painter, option, index);
             return;
         }

        QStyleOptionProgressBarV2 progressBarOption;
         
         QRect rect = option.rect;
         QSize size(rect.width()*3/4,rect.height()*3/4);
         rect.setSize(size);
         
         progressBarOption.state = QStyle::State_Enabled;
         progressBarOption.direction = QApplication::layoutDirection();
         progressBarOption.rect =rect;
         progressBarOption.fontMetrics = QApplication::fontMetrics();
         
         QPalette pal =  progressBarOption.palette;
         QColor col;
         col.setNamedColor("#05B8CC");
         pal.setColor(QPalette::Highlight,col);
         //pal.setColor(QPalette::HighlightedText,Qt::black);
         progressBarOption.palette = pal;
         
          progressBarOption.type =  QStyleOption::SO_ProgressBar;
         progressBarOption.version = 2 ;
         
         progressBarOption.minimum = 0;
         progressBarOption.maximum = 100;
         progressBarOption.textAlignment = Qt::AlignCenter;
         progressBarOption.textVisible = true;

         QModelIndex ind = index.parent();
         
         int progress = index.data(Qt::DisplayRole).toInt(); 
       // Set the progress and text values of the style option.
         
         progressBarOption.progress = progress < 0 ? 0 : progress;
         progressBarOption.text = QString("%1%").arg(progressBarOption.progress);

         // Draw the progress bar onto the view.
         QApplication::style()->drawControl(QStyle::CE_ProgressBar, &progressBarOption, painter,0);
     }
};

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[caduel]

a) what do you see? give us a screenshot, please.
b) probably you do not see the alternating background because the progress bar fills all of the background?
c)

3. i would like to have the progress text beside the bar rather than within it.(like jpn's snapshot)

set progressBarOption.textVisible = false; and draw the text besides it in your paint() method. (maybe there are better ways?)

HTH

side note:
* the progressbar variable in paint() is unused
* paint() can not be inlined as it is virtual. (even if it could be, I doubt it should.)