#include <panningPreviewInterface.h>
Public Slots | |
| void | setSelection (QRect selection) |
Signals | |
| void | selectionChanged () |
Public Member Functions | |
| PanningPreviewInterface (QString imageFilename, QWidget *parent=0, const char *name=0) | |
| Creates layout. | |
| virtual QSize | sizeHint () const |
| QRect | getSelection () |
| QSize | paintingSize () |
Protected Member Functions | |
| void | resizeEvent (QResizeEvent *) |
Private Member Functions | |
| void | generateOrigImage () |
Private Attributes | |
| QImage | fullSizeImage |
| Full size image. | |
| QRect | selection |
| Current selection. | |
Detailed Description
Definition at line 21 of file panningPreviewInterface.h.
Constructor & Destructor Documentation
| PanningPreviewInterface::PanningPreviewInterface | ( | QString | imageFilename, |
| QWidget * | parent = 0, |
||
| const char * | name = 0 |
||
| ) |
Creates layout.
Definition at line 15 of file panningPreviewInterface.cpp.
References fullSizeImage, and selection.
:
SplitViewInterface (parent, name )
{
//load full size image
fullSizeImage = QImage( imageFilename );
//a 0-width selection is invalid and prevents
//resize events from triggering painting
//until the true selection region is set
selection.setWidth( 0 );
}
Member Function Documentation
| void PanningPreviewInterface::generateOrigImage | ( | ) | [private] |
Definition at line 105 of file panningPreviewInterface.cpp.
References fullSizeImage, selection, selectionChanged(), and SplitViewInterface::setImages().
Referenced by setSelection().
{
//generate orig image
//set adjusted image to null so repain won't occur until it is reset
setImages( fullSizeImage.copy( selection.left(), selection.top(),
selection.width(), selection.height() ),
QImage() );
//emit signal indicating adjusted image is out of date
emit selectionChanged();
}
| QRect PanningPreviewInterface::getSelection | ( | ) |
Definition at line 117 of file panningPreviewInterface.cpp.
References selection.
Referenced by GrainEditor::generateAdjustedPreviewImage(), and GrainEditor::previewResized().
{ return selection; }
| QSize PanningPreviewInterface::paintingSize | ( | ) |
Definition at line 34 of file panningPreviewInterface.cpp.
References fullSizeImage.
Referenced by resizeEvent(), and setSelection().
{
return QSize( QMIN( fullSizeImage.width(), size().width() ),
QMIN( fullSizeImage.height(), size().height() ) );
}
| void PanningPreviewInterface::resizeEvent | ( | QResizeEvent * | ) | [protected, virtual] |
Implements SplitViewInterface.
Definition at line 40 of file panningPreviewInterface.cpp.
References fullSizeImage, paintingSize(), selection, and setSelection().
{
//center of new selection...
QPoint center;
//if selection not set then default to center of image
if( selection.width() == 0)
{
//compute center selection center
center = QPoint( fullSizeImage.width() / 2,
fullSizeImage.height() / 2 );
}
//else construct new selection that is centered over old selection
else
{
//compute center selection center
center = QPoint( selection.left() + selection.width()/2,
selection.top() + selection.height()/2 );
}
//determine width/height that will be used for painting
QSize actualSize = paintingSize();
//compute new selection area centerd over old selection region
QRect newSelection;
newSelection.setLeft( center.x() - actualSize.width() /2 );
newSelection.setTop ( center.y() - actualSize.height()/2 );
newSelection.setRight( newSelection.left() + actualSize.width() - 1 );
newSelection.setBottom( newSelection.top() + actualSize.height() - 1 );
//set selection which will result in regenerating of orig and adjusted images
setSelection( newSelection );
}
| void PanningPreviewInterface::selectionChanged | ( | ) | [signal] |
Referenced by generateOrigImage().
| void PanningPreviewInterface::setSelection | ( | QRect | selection | ) | [slot] |
Definition at line 74 of file panningPreviewInterface.cpp.
References fullSizeImage, generateOrigImage(), paintingSize(), and selection.
Referenced by resizeEvent().
{
//set the selection
selection = s;
//get the available painting size
QSize actualSize = paintingSize();
//if too wide or tall shrink selection
if( selection.width() > actualSize.width() )
selection.setRight( selection.left() + actualSize.width() - 1 );
if( selection.height() > actualSize.height() )
selection.setBottom( selection.top() + actualSize.height() - 1 );
//shift selection area if it extends beyond image boundary
if( selection.left() < 0 )
selection.moveBy( -selection.left(), 0 );
if( selection.top() < 0 )
selection.moveBy( 0, -selection.top() );
if( selection.right() > fullSizeImage.width()-1 )
selection.moveBy( (fullSizeImage.width()-1) - selection.right(), 0 );
if( selection.bottom() > fullSizeImage.height()-1 )
selection.moveBy( 0, (fullSizeImage.height()-1) - selection.bottom() );
//regenerate orig and adjusted images
generateOrigImage();
}
| QSize PanningPreviewInterface::sizeHint | ( | ) | const [virtual] |
Implements SplitViewInterface.
Definition at line 28 of file panningPreviewInterface.cpp.
{
//subjetively chosen default size :)
return QSize( 500, 400 );
}
Member Data Documentation
QImage PanningPreviewInterface::fullSizeImage [private] |
Full size image.
Definition at line 46 of file panningPreviewInterface.h.
Referenced by generateOrigImage(), paintingSize(), PanningPreviewInterface(), resizeEvent(), and setSelection().
QRect PanningPreviewInterface::selection [private] |
Current selection.
Definition at line 49 of file panningPreviewInterface.h.
Referenced by generateOrigImage(), getSelection(), PanningPreviewInterface(), resizeEvent(), and setSelection().
The documentation for this class was generated from the following files:
