Displays subalbum icon and name. More...

#include <subalbumPreviewWidget.h>

Inheritance diagram for SubalbumPreviewWidget:

Collaboration diagram for SubalbumPreviewWidget:

Public Member Functions
	SubalbumPreviewWidget (SubalbumsIconView parent, Subalbum salbum)
	Sets subalbum pointer.
Subalbum *	getSubalbum ()
	Returns subalbum pointer.
void	paintFocus (QPainter *p, const QColorGroup &cg)
bool	acceptDrop (const QMimeSource *e) const
int	compare (QIconViewItem *i) const
void	setText (const QString &text)
void	setMousedOver (bool val)
void	paint (QPainter *p)
Static Public Member Functions
static QPixmap *	createSubalbumPixmap (QString imageName)
Protected Member Functions
void	calcRect (const QString &text_=QString::null)
void	paintItem (QPainter *p, const QColorGroup &cg)
Private Member Functions
void	dropped (QDropEvent *e, const QValueList< QIconDragItem > &lst)
QColor	blendColors (QColor a, QColor b, double alpha)
void	initializeItemRect ()
Private Attributes
Subalbum *	subalbum
	Pointer to subalbum backend object.
QPixmap *	subalbumPreviewImage
	Representative Image for Subalbum.
QString *	subalbumName
	Subalbum's Name.
SubalbumsIconView *	parent
	parent icon view
bool	mousedOver
	is the mouse over the widget

Detailed Description

Displays subalbum icon and name.

Definition at line 29 of file subalbumPreviewWidget.h.

Constructor & Destructor Documentation

SubalbumPreviewWidget::SubalbumPreviewWidget	(	SubalbumsIconView *	parent,
		Subalbum *	salbum
	)

Sets subalbum pointer.

Definition at line 34 of file subalbumPreviewWidget.cpp.

References initializeItemRect(), mousedOver, parent, and subalbum.

          : QIconViewItem(parent, 
                          clipText( salbum->getName(), 2, parent->getTextWidth()),
                          *salbum->getRepresentativeImage(MEDIUM) )
{         
  mousedOver = false;
  this->parent = parent;
  subalbum = salbum;
  
  //initialize item rectangle
  initializeItemRect();
}

Member Function Documentation

bool SubalbumPreviewWidget::acceptDrop ( const QMimeSource * e ) const

Definition at line 246 of file subalbumPreviewWidget.cpp.

{
  return true;
}

QColor SubalbumPreviewWidget::blendColors	(	QColor	a,
		QColor	b,
		double	alpha
	)		`[private]`

Definition at line 380 of file subalbumPreviewWidget.cpp.

Referenced by paintItem().

{
  double alpha2 = 1-alpha;
  return QColor( (int)(alpha*a.red() + alpha2*b.red()),
                          (int)(alpha*a.green() + alpha2*b.green()),
                          (int)(alpha*a.blue() + alpha2*b.blue()) );
}

void SubalbumPreviewWidget::calcRect ( const QString & text_ = QString::null ) [protected]

Definition at line 336 of file subalbumPreviewWidget.cpp.

References initializeItemRect().

{  
  //setup default dimensions
  QIconViewItem::calcRect( text_ );  

  //update using init method
  initializeItemRect();
}

int SubalbumPreviewWidget::compare ( QIconViewItem * i ) const

Definition at line 251 of file subalbumPreviewWidget.cpp.

{
  if(pos().y() >= i->pos().y())
  {  return 1; }
  else
  { return -1; }
}

QPixmap * SubalbumPreviewWidget::createSubalbumPixmap ( QString imageName ) [static]

Definition at line 259 of file subalbumPreviewWidget.cpp.

References calcScaledImageDimensions().

Referenced by Subalbum::setRepresentativeImage(), and Subalbum::Subalbum().

{
  //load image
  QImage icon(imageName);

  //if null then bail immediately
  if( icon.isNull() )
    return NULL;
  
  //----------------------------------------------
  //resize image based on text properties. Find ideal hight
  QFontMetrics fm( qApp->font() );

  //ideal image height is two text lines, 1 pixel inbetween
  int idealImageHeight = fm.leading() + 2*fm.height();

 //ideal image width assuming 4:3 aspect ratio
 int idealImageWidth = (4 * idealImageHeight ) / 3;
 //----------------------------------------------
 //resize image to fit within bounding rectangle, pad and center as necessary
 int actualImageWidth = 0;
 int actualImageHeight = 0;
 calcScaledImageDimensions( icon.width(), icon.height(),
                            idealImageWidth, idealImageHeight,
                            actualImageWidth, actualImageHeight );

  //if off by one pixel fudge it so icon perfectly cenetered
  if(actualImageHeight == idealImageHeight - 1)
  {
    actualImageHeight = idealImageHeight;
  }

  QImage scaledIcon= icon.smoothScale( actualImageWidth, actualImageHeight );
  QImage* paddedScaledIcon = new QImage(idealImageWidth, idealImageHeight, scaledIcon.depth());
  paddedScaledIcon->setAlphaBuffer(true);

  //make entire image transparent
  int x, y;
  for(x=0; x< idealImageWidth; x++)
  {
    for(y=0; y<idealImageHeight; y++)
    {
      paddedScaledIcon->setPixel(x,y, qRgba(255, 255, 255,0) );
    }
  }

  //paint image in center of padded region
  int xDiff = idealImageWidth - actualImageWidth;
  int yDiff = idealImageHeight  - actualImageHeight;
  int x2 = 0;
  for(x= xDiff/2; x < (xDiff/2) + actualImageWidth; x++)
  {
    int y2 = 0;
    for(y= yDiff/2; y < (yDiff/2) + actualImageHeight; y++)
    {
      paddedScaledIcon->setPixel(x, y, scaledIcon.pixel(x2, y2));
       y2++;
    }
    x2++;
  }

  //clip corners if image takes up full width
  if(xDiff == 0)
  {
      paddedScaledIcon->setPixel(0, 0, qRgba(255, 0,0,0) );
      paddedScaledIcon->setPixel(idealImageWidth-1, 0, qRgba(255, 0,0,0) );
      paddedScaledIcon->setPixel(0, idealImageHeight-1, qRgba(255, 0,0,0) );
      paddedScaledIcon->setPixel(idealImageWidth-1, idealImageHeight-1, qRgba(255, 0,0,0) );
  }

  QPixmap* padddedScaledPix = new QPixmap( paddedScaledIcon->width(), paddedScaledIcon->height() );
  padddedScaledPix->convertFromImage( *paddedScaledIcon );
  delete paddedScaledIcon;
  return padddedScaledPix;
 //----------------------------------------------
}

void SubalbumPreviewWidget::dropped	(	QDropEvent *	e,
		const QValueList< QIconDragItem > &	lst
	)		`[private]`

Definition at line 175 of file subalbumPreviewWidget.cpp.

References Subalbum::addPhoto(), SubalbumWidget::getPhotos(), SubalbumWidget::getSubalbum(), height, parent, Subalbum::photoMoved(), and subalbum.

{
  //if source is not from the application then ignore
  if(e->source() == NULL)
    return;
    
  //if source of drop event is from this widget when user is attempting to
  //rearrange subalbums, move currently selected item to
  //approximately where the cursor is before rearranging items
  if(e->source()->parentWidget() == parent)
  {
    if(e->pos().y() < (y() + (height()/2)))
    {
      parent->currentItem()->move(x(), y() - 1);
    }
    else
    {
      parent->currentItem()->move(x(), y() + (height()/2) + 1);
    }
  }
  //else check to see if user dropped photo(s) on subalbum
  else
  {
    //if the source of the items is the current subalbum icon view and
    //this is a different subalbum then
    //move photos from that subalbum to this one
    if(
         !isSelected() &&
         (
           e->source()->parentWidget() ==
           ((LayoutWidget*)(parent->parentWidget()->parentWidget()))->getSubalbum()->getPhotos()
         )
       )
    {
      //iterate over all selected photos, inserting each
      //into this subalbum, removing from old subalbum,
      //and deleting old photo widgets
      SubalbumWidget* oldSubalbumWidget = ((LayoutWidget*)(parent->parentWidget()->parentWidget()))->getSubalbum();
      Subalbum* oldSubalbum = oldSubalbumWidget->getSubalbum();
      QIconViewItem* current = oldSubalbumWidget->getPhotos()->firstItem();
      while(current != NULL)
      {
       //found a selected photo
        if(current->isSelected())
        {
          //get pointer to photo
          Photo* photo = ((PhotoPreviewWidget*)current)->getPhoto();

          //remove photo from that subalbum
          oldSubalbum->photoMoved(photo);

          //add photo to this subalbum
          subalbum->addPhoto(photo);

          //delete photo widget and rearrange photos
          QIconViewItem* temp = current;
          current = current->nextItem();
          delete temp;
        }
        else
        {
          current = current->nextItem();
        }
      } //end while

      //reannarge photos once all photos have been removed
      oldSubalbumWidget->getPhotos()->arrangeItemsInGrid();
    }
  }
}

Subalbum * SubalbumPreviewWidget::getSubalbum ( )

Returns subalbum pointer.

Definition at line 47 of file subalbumPreviewWidget.cpp.

References subalbum.

Referenced by Album::syncSubalbumList().

{
  return subalbum;
}

void SubalbumPreviewWidget::initializeItemRect ( ) [private]

Definition at line 345 of file subalbumPreviewWidget.cpp.

References SubalbumsIconView::getTextWidth(), and parent.

Referenced by calcRect(), and SubalbumPreviewWidget().

{
  //reset pixmap rect
  QRect pr = pixmapRect();
  int prWidth  = pr.width();
  int prHeight = pr.height();
  pr.setTopLeft( QPoint(3,3) );
  pr.setBottomRight( QPoint(pr.left()+prWidth, pr.top()+prHeight) );
  setPixmapRect( pr );
  
  //reset text rect
  int textWidth = parent->getTextWidth();
  QRect tr = textRect();
  tr.setTop( pixmapRect().top() );
  tr.setBottom( pixmapRect().bottom() );
  tr.setLeft( pixmapRect().right() + 2 );
  tr.setRight( tr.left() + textWidth );
  setTextRect( tr );
  
  //reset item rect using pixmap and text rect dimensions
  int itemW = 3 + pixmapRect().width() + (tr.left() - pr.right()) + textRect().width() + 3;
  int itemH = 3 + pixmapRect().height() + 3;
  setItemRect( QRect( pixmapRect().left() - 3, pixmapRect().top() - 3, itemW, itemH ) );
}

void SubalbumPreviewWidget::paint ( QPainter * p )

Definition at line 54 of file subalbumPreviewWidget.cpp.

References paintItem().

{
  paintItem( p, QColorGroup() );
}

void SubalbumPreviewWidget::paintFocus	(	QPainter *	p,
		const QColorGroup &	cg
	)

Definition at line 52 of file subalbumPreviewWidget.cpp.

{ }

void SubalbumPreviewWidget::paintItem	(	QPainter *	p,
		const QColorGroup &	cg
	)		`[protected]`

Definition at line 59 of file subalbumPreviewWidget.cpp.

References blendColors(), buffer, height, mousedOver, and width.

Referenced by paint().

{
  QColor lightLightBlue( 152, 180, 226 );
  QColor darkLightBlue(193, 210, 238);
  QColor darkBlue(35, 75, 139);
  QColor background = darkLightBlue;
  
  //resize old static buffer to new needed size, fill with widget background color
  static QPixmap buffer;
  QRect r = rect();
  QSize newSize = r.size().expandedTo(buffer.size() );
  buffer.resize(newSize);
  buffer.fill( background );

  //construct painter for buffer
  QPainter bufferPainter(&buffer, this);
  bufferPainter.translate( -r.x(), -r.y() );

  //turn off clipping to make painting operations faster
  bufferPainter.setClipping(false);
  
  //paint mouse over or actual selection color
  bool paintRect = false;
  QColor paintColor;
  if(isSelected()) { paintColor = darkBlue; paintRect = true; }
  else if(mousedOver) { paintColor = lightLightBlue; paintRect = true; }

  if(paintRect)
  {
     //first paint alpha blended edges

     //-------------------------
     //top and bottom edges
     QRect r2 = r;
     r2.setLeft( r.left() + 4);
     r2.setRight( r.right() - 4);
     r2.setTop( r.top() );
     r2.setBottom( r.bottom() );
     bufferPainter.fillRect( r2, blendColors( paintColor, background, 0.40 ) );

     r2.setLeft( r2.left() + 1);
     r2.setRight( r2.right() - 1);
     bufferPainter.fillRect( r2, blendColors( paintColor, background, 0.67 ) );
     //-------------------------
     //inner top and bottom edges
     r2.setLeft( r2.left() - 3);
     r2.setRight( r2.right() + 3);
     r2.setTop( r2.top() + 1 );
     r2.setBottom( r2.bottom() - 1);
     bufferPainter.fillRect( r2, blendColors( paintColor, background, 0.40 ) );

     r2.setLeft( r2.left() + 1);
     r2.setRight( r2.right() - 1);
     bufferPainter.fillRect( r2, blendColors( paintColor, background, 0.67 ) );
     //-------------------------
     //left and right inner edges
     r2.setLeft( r2.left() - 2);
     r2.setRight( r2.right() + 2);
     r2.setTop( r2.top() + 1 );
     r2.setBottom( r2.bottom() - 1);
     bufferPainter.fillRect( r2, blendColors( paintColor, background, 0.40) );

     r2.setTop( r2.top() + 1);
     r2.setBottom( r2.bottom() - 1);
     bufferPainter.fillRect( r2, blendColors( paintColor, background, 0.67) );
     //-------------------------
     // middle region
     r2.setLeft( r2.left() - 1 );
     r2.setRight( r2.right() + 1 );
     r2.setTop( r2.top() + 1);
     r2.setBottom( r2.bottom() - 1);
     bufferPainter.fillRect( r2, blendColors( paintColor, background, 0.40) );

     r2.setTop( r2.top() + 1);
     r2.setBottom( r2.bottom() - 1);
     bufferPainter.fillRect( r2, blendColors( paintColor, background, 0.67) );
     //-------------------------
     //second paint inner selection
     r2 = r;
     r2.setLeft( r.left() + 1);
     r2.setRight( r.right() - 1);
     r2.setTop( r.top() + 4 );
     r2.setBottom( r.bottom() - 4);
     bufferPainter.fillRect( r2, paintColor );

     r2.setLeft( r2.left() + 1);
     r2.setRight( r2.right() - 1);
     r2.setTop( r2.top() - 2 );
     r2.setBottom( r2.bottom() + 2 );
     bufferPainter.fillRect( r2, paintColor );

     r2.setLeft( r2.left() + 2);
     r2.setRight( r2.right() - 2);
     r2.setTop( r2.top() - 1 );
     r2.setBottom( r2.bottom() + 1 );
     bufferPainter.fillRect( r2, paintColor );
  }

  //paint pixmap
  bufferPainter.drawPixmap( x()+4 , y() + 4, *pixmap());

  //paint text
  int align = AlignLeft | AlignTop | BreakAnywhere;
  if(isSelected())
    bufferPainter.setPen( white );
  else
    bufferPainter.setPen( black );
  bufferPainter.drawText( x() + 4 + pixmapRect().width(),
                                        y() + 4,
                                        textRect().width(), textRect().height(),
                                        align, text() );

  //draw buffer to screen
  p->drawPixmap( x(), y(), buffer );
}

void SubalbumPreviewWidget::setMousedOver ( bool val )

Definition at line 375 of file subalbumPreviewWidget.cpp.

References mousedOver.

Referenced by SubalbumsIconView::clearPseudoSelection(), SubalbumsIconView::contentsDragMoveEvent(), and SubalbumsIconView::repaintGroup().

{
  mousedOver = val;
}

void SubalbumPreviewWidget::setText ( const QString & text )

Definition at line 370 of file subalbumPreviewWidget.cpp.

References clipText(), SubalbumsIconView::getTextWidth(), and parent.

{
  QIconViewItem::setText( clipText(text, 2, parent->getTextWidth()), false );
}

Member Data Documentation

bool SubalbumPreviewWidget::mousedOver [private]

is the mouse over the widget

Definition at line 74 of file subalbumPreviewWidget.h.

Referenced by paintItem(), setMousedOver(), and SubalbumPreviewWidget().

SubalbumsIconView* SubalbumPreviewWidget::parent [private]

parent icon view

Definition at line 71 of file subalbumPreviewWidget.h.

Referenced by dropped(), initializeItemRect(), setText(), and SubalbumPreviewWidget().

Subalbum* SubalbumPreviewWidget::subalbum [private]

Pointer to subalbum backend object.

Definition at line 62 of file subalbumPreviewWidget.h.

Referenced by dropped(), getSubalbum(), and SubalbumPreviewWidget().

QString* SubalbumPreviewWidget::subalbumName [private]

Subalbum's Name.

Definition at line 68 of file subalbumPreviewWidget.h.

QPixmap* SubalbumPreviewWidget::subalbumPreviewImage [private]

Representative Image for Subalbum.

Definition at line 65 of file subalbumPreviewWidget.h.

The documentation for this class was generated from the following files:

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation