org.omegahat.Graphics.Layouts
Class LayoutAllocator

java.lang.Object
  |
  +--java.util.Dictionary
        |
        +--java.util.Hashtable
              |
              +--org.omegahat.Environment.Utils.OrderedTable
                    |
                    +--org.omegahat.Graphics.Layouts.BasicAllocator
                          |
                          +--org.omegahat.Graphics.Layouts.LayoutAllocator

All Implemented Interfaces:

Activable, AssignableSubset, java.lang.Cloneable, Database, EnumeratedRegionAllocator, java.util.Iterator, java.util.Map, RegionAllocator, java.io.Serializable, ShallowCopyable, Subsettable

public class LayoutAllocator

extends BasicAllocator

Component container region allocator that provides its regions as a constraint-based grid of cells of different dimensions.

See Also:

GridAllocator., Serialized Form

Inner classes inherited from class java.util.Map

java.util.Map.Entry

Field Summary

protected LayoutDescription

description

Fields inherited from class org.omegahat.Graphics.Layouts.BasicAllocator

cursor

Fields inherited from class org.omegahat.Environment.Utils.OrderedTable

listeners, name, orderedElements, orderedKeys, state

Fields inherited from interface org.omegahat.Environment.Databases.Database

ALL, ASSIGN, ATTACH, DETACH, NULL_ENTRY, READ, READ_WRITE, REMOVE

Fields inherited from interface org.omegahat.Environment.Databases.Activable

ACTIVE, INACTIVE

Constructor Summary

LayoutAllocator()

LayoutAllocator(double[] w, double[] h, int[][] order)

LayoutAllocator(int numRows, int numCols, int[][] order)

LayoutAllocator(UDouble[] widths, UDouble[] heights, int[][] order)

Method Summary

void	add(java.lang.Object obj, int order)
RegionDescriptionInt	createRegionDescription(int row, int col)
LayoutDescription	getDescription()
Region	getRegion(LayoutAllocatorRegionDescription desc, ScaleInt sx, ScaleInt sy, int parentOrigin, double widthCM, double heightCM, int fontSize, GraphicalContainerInt parent) Used by the LayoutAllocatorRegionDescription when they compute the actual Region for rendering, based on their parents actual size.
void	makeLayoutAllocator(UDouble[] widths, UDouble[] heights, int[][] order)

Methods inherited from class org.omegahat.Graphics.Layouts.BasicAllocator

getCursor, getRegionDescriptions, getRegions, hasNext, next, nextDescription, remove, setCursor, setDescription, setDescription, setDescription

Methods inherited from class org.omegahat.Environment.Utils.OrderedTable

add, add, addListListener, assign, assignSubset, attach, clear, copy, copy, detach, elementAt, exists, get, getName, getState, keys, listeners, listeners, notifyListeners, objects, ordered, orderedKeys, put, put, put, remove, remove, removeElement, removeElement, removeElementAt, removeElementAt, removeListListener, setElementAt, setName, setState, subset, subset, subset

Methods inherited from class java.util.Hashtable

clone, contains, containsKey, containsValue, elements, entrySet, equals, get, hashCode, isEmpty, keySet, putAll, rehash, size, toString, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.omegahat.Environment.Databases.Database

size

Field Detail

description

protected LayoutDescription description

Constructor Detail

LayoutAllocator

public LayoutAllocator()

LayoutAllocator

public LayoutAllocator(int numRows,
                       int numCols,
                       int[][] order)

LayoutAllocator

public LayoutAllocator(double[] w,
                       double[] h,
                       int[][] order)

LayoutAllocator

public LayoutAllocator(UDouble[] widths,
                       UDouble[] heights,
                       int[][] order)

Method Detail

getDescription

public LayoutDescription getDescription()

add

public void add(java.lang.Object obj,
                int order)

makeLayoutAllocator

public void makeLayoutAllocator(UDouble[] widths,
                                UDouble[] heights,
                                int[][] order)

createRegionDescription

public RegionDescriptionInt createRegionDescription(int row,
                                                    int col)

getRegion

public Region getRegion(LayoutAllocatorRegionDescription desc,
                        ScaleInt sx,
                        ScaleInt sy,
                        int parentOrigin,
                        double widthCM,
                        double heightCM,
                        int fontSize,
                        GraphicalContainerInt parent)

Used by the LayoutAllocatorRegionDescription when they compute the actual Region for rendering, based on their parents actual size. They return to the allocator so that the computations for all the regions can be done in a single step.
Need way to cache these so that the first region description can ask to compute them and they are given to each subsequent description in response without recomputation. Have to worry about clearing them when all are "consumed" as well as being thread-safe.