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StretchableObjectResizer Class Reference

A utility class for fitting a set of objects whose sizes can vary between a minimum and maximum size, into a space. More...

Public Member Functions

 StretchableObjectResizer ()
 Creates an empty object resizer.
 
 ~StretchableObjectResizer ()
 Destructor.
 
void addItem (double currentSize, double minSize, double maxSize, int order=0)
 Adds an item to the list.
 
void resizeToFit (double targetSize)
 Resizes all the items to fit this amount of space.
 
int getNumItems () const noexcept
 Returns the number of items that have been added.
 
double getItemSize (int index) const noexcept
 Returns the size of one of the items.
 

Detailed Description

A utility class for fitting a set of objects whose sizes can vary between a minimum and maximum size, into a space.

This is a trickier algorithm than it would first seem, so I've put it in this class to allow it to be shared by various bits of code.

To use it, create one of these objects, call addItem() to add the list of items you need, then call resizeToFit(), which will change all their sizes. You can then retrieve the new sizes with getItemSize() and getNumItems().

It's currently used by the TableHeaderComponent for stretching out the table headings to fill the table's width.

Constructor & Destructor Documentation

StretchableObjectResizer::StretchableObjectResizer ( )

Creates an empty object resizer.

StretchableObjectResizer::~StretchableObjectResizer ( )

Destructor.

Member Function Documentation

void StretchableObjectResizer::addItem ( double  currentSize,
double  minSize,
double  maxSize,
int  order = 0 
)

Adds an item to the list.

The order parameter lets you specify groups of items that are resized first when some space needs to be found. Those items with an order of 0 will be the first ones to be resized, and if that doesn't provide enough space to meet the requirements, the algorithm will then try resizing the items with an order of 1, then 2, and so on.

void StretchableObjectResizer::resizeToFit ( double  targetSize)

Resizes all the items to fit this amount of space.

This will attempt to fit them in without exceeding each item's miniumum and maximum sizes. In cases where none of the items can be expanded or enlarged any further, the final size may be greater or less than the size passed in.

After calling this method, you can retrieve the new sizes with the getItemSize() method.

int StretchableObjectResizer::getNumItems ( ) const
noexcept

Returns the number of items that have been added.

References Array< ElementType, TypeOfCriticalSectionToUse, minimumAllocatedSize >::size().

double StretchableObjectResizer::getItemSize ( int  index) const
noexcept

Returns the size of one of the items.


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