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java.lang.Object wyvern.util.TableLayout
TableLayout is a layout manager that arranges components in rows and columns like a spreadsheet. TableLayout allows each row or column to be a different size. A row or column can be given an absolute size in pixels, a percentage of the available space, or it can grow and shrink to fill the remaining space after other rows and columns have been resized.
Using spreadsheet terminology, a cell is the intersection of a row and column. Cells have finite, non-negative sizes measured in pixels. The dimensions of a cell depend solely upon the dimensions of its row and column.
A component occupies a rectangular group of one or more cells. The component can be aligned in four ways within that cell.
A component can be stretched horizontally to fit the cell set (full justification), or it can be placed in the center of the cell. The component could also be left justified or right justified. Similarly, the component can be full, center, top, or bottom justified along the
public static void main (String args[]) { // Create a frame Frame frame = new Frame("Example of TableLayout"); frame.setBounds (100, 100, 300, 300);// Create a TableLayout for the frame double border = 10; double size[][] = {{border, 0.10, 20, TableLayout.FILL, 20, 0.20, border}, // Columns {border, 0.20, 20, TableLayout.FILL, 20, 0.20, border}}; // Rows frame.setLayout (new TableLayout(size)); // Create some buttons String label[] = {"Top", "Bottom", "Left", "Right", "Center", "Overlap"}; Button button[] = new Button[label.length]; for (int i = 0; i < label.length; i++) button[i] = new Button(label[i]); // Add buttons frame.add (button[0], "1, 1, 5, 1"); // Top frame.add (button[1], "1, 5, 5, 5"); // Bottom frame.add (button[2], "1, 3 "); // Left frame.add (button[3], "5, 3 "); // Right frame.add (button[4], "3, 3, c, c"); // Center frame.add (button[5], "3, 3, 3, 5"); // Overlap // Allow user to close the window to terminate the program frame.addWindowListener (new WindowListener() { public void windowClosing (WindowEvent e) { System.exit (0); } public void windowOpened (WindowEvent e) {} public void windowClosed (WindowEvent e) {} public void windowIconified (WindowEvent e) {} public void windowDeiconified (WindowEvent e) {} public void windowActivated (WindowEvent e) {} public void windowDeactivated (WindowEvent e) {} } ); // Show frame frame.show(); }
Nested Class Summary | |
protected static class |
TableLayout.Entry
|
Field Summary | |
protected static int |
C
Indicates a column |
protected int[][] |
crOffset
Offsets of crs in pixels. |
protected int[][] |
crSize
Sizes of crs in pixels |
protected double[][] |
crSpec
Sizes of crs expressed in absolute and relative terms |
protected static double[][] |
defaultSize
Default row/column size |
protected boolean |
dirty
Indicates whether or not the size of the cells are known for the last known size of the container. |
protected int |
hGap
Horizontal gap between columns |
protected java.util.LinkedList |
list
List of components and their sizes |
protected int |
oldHeight
Previous known height of the container |
protected int |
oldWidth
Previous known width of the container |
protected static int |
R
Indicates a row |
protected int |
vGap
Vertical gap between rows |
Fields inherited from interface wyvern.util.TableLayoutConstants |
BOTTOM, CENTER, FILL, FULL, LEFT, MAX_ALIGN, MIN_ALIGN, MINIMUM, PREFERRED, RIGHT, TOP |
Constructor Summary | |
TableLayout()
Constructs an instance of TableLayout. |
|
TableLayout(double[][] size)
Constructs an instance of TableLayout. |
Method Summary | |
void |
addLayoutComponent(java.awt.Component component,
java.lang.Object constraint)
Adds the specified component with the specified name to the layout. |
void |
addLayoutComponent(java.lang.String name,
java.awt.Component component)
Adds the specified component with the specified name to the layout. |
protected int |
assignAbsoluteSize(int z,
int availableSize)
Assigns absolute sizes. |
protected void |
assignFillSize(int z,
int availableSize)
Assigns FILL sizes. |
protected int |
assignPrefMinSize(int z,
int availableSize,
double typeOfSize)
Assigned widths to preferred and minimum size columns and rows. |
protected int |
assignRelativeSize(int z,
int availableSize)
Assigns relative sizes. |
protected java.awt.Dimension |
calculateLayoutSize(java.awt.Container container,
double typeOfSize)
Calculates the preferred or minimum size for the methods preferredLayoutSize and minimumLayoutSize. |
protected int |
calculateLayoutSize(java.awt.Container container,
int z,
double typeOfSize,
TableLayout.Entry[] entryList,
java.awt.Dimension[] prefMinSize)
Calculates the preferred or minimum size for the method calculateLayoutSize(Container container, double typeOfSize). |
protected void |
calculateOffset(int z,
java.awt.Insets inset)
Calculates the offset of each cr. |
protected void |
calculateSize(java.awt.Container container)
Calculates the sizes of the rows and columns based on the absolute and relative sizes specified in crSpec[R] and crSpec[C]
and the size of the container. |
protected int[] |
calculateSizeAndOffset(TableLayout.Entry entry,
int preferredSize,
boolean isColumn)
Calculates the vertical/horizontal offset and size of a component. |
void |
deleteColumn(int i)
Deletes a column in this layout. |
protected void |
deleteCr(int z,
int i)
Deletes a cr for the methods deleteRow or deleteColumn. |
void |
deleteRow(int i)
Deletes a row in this layout. |
double[] |
getColumn()
Gets the sizes of columns in this layout. |
double |
getColumn(int i)
Gets the width of a single column in this layout. |
TableLayoutConstraints |
getConstraints(java.awt.Component component)
Gets the constraints of a given component. |
int |
getHGap()
Gets the horizontal gap between colunns. |
java.awt.Component[] |
getInvalidEntry()
Determines whether or not there are any components with invalid constraints. |
float |
getLayoutAlignmentX(java.awt.Container parent)
Returns the alignment along the x axis. |
float |
getLayoutAlignmentY(java.awt.Container parent)
Returns the alignment along the y axis. |
int |
getNumColumn()
Gets the number of columns in this layout. |
int |
getNumRow()
Gets the number of rows in this layout. |
java.awt.Component[] |
getOverlappingEntry()
Gets a list of overlapping components. |
double[] |
getRow()
Gets the height of a single row in this layout. |
double |
getRow(int i)
Gets the sizes of a row in this layout. |
int |
getVGap()
Gets the vertical gap between rows. |
void |
insertColumn(int i,
double size)
Inserts a column in this layout. |
void |
insertCr(int z,
int i,
double size)
Inserts a cr for the methods insertRow or insertColumn. |
void |
insertRow(int i,
double size)
Inserts a row in this layout. |
void |
invalidateLayout(java.awt.Container target)
Invalidates the layout, indicating that if the layout manager has cached information it should be discarded. |
void |
layoutContainer(java.awt.Container container)
To lay out the specified container using this layout. |
static void |
main(java.lang.String[] args)
|
java.awt.Dimension |
maximumLayoutSize(java.awt.Container target)
Returns the maximum dimensions for this layout given the components in the specified target container. |
java.awt.Dimension |
minimumLayoutSize(java.awt.Container container)
Determines the minimum size of the container argument using this layout. |
java.awt.Dimension |
preferredLayoutSize(java.awt.Container container)
Determines the preferred size of the container argument using this layout. |
void |
removeLayoutComponent(java.awt.Component component)
Removes the specified component from the layout. |
void |
setColumn(double[] column)
Adjusts the number and sizes of rows in this layout. |
void |
setColumn(int i,
double size)
Adjusts the width of a single column in this layout. |
void |
setConstraints(java.awt.Component component,
TableLayoutConstraints constraint)
Sets the constraints of a given component. |
protected void |
setCr(int z,
double[] size)
Sets the sizes of rows or columns for the methods setRow or setColumn. |
protected void |
setCr(int z,
int i,
double size)
Sets the sizes of rows or columns for the methods setRow or setColumn. |
void |
setHGap(int hGap)
Sets the horizontal gap between colunns. |
void |
setRow(double[] row)
Adjusts the number and sizes of rows in this layout. |
void |
setRow(int i,
double size)
Adjusts the height of a single row in this layout. |
void |
setVGap(int vGap)
Sets the vertical gap between rows. |
java.lang.String |
toString()
Converts this TableLayout to a string. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
protected static final double[][] defaultSize
protected static final int C
protected static final int R
protected double[][] crSpec
protected int[][] crSize
protected int[][] crOffset
protected java.util.LinkedList list
protected boolean dirty
protected int oldWidth
protected int oldHeight
protected int hGap
protected int vGap
Constructor Detail |
public TableLayout()
public TableLayout(double[][] size)
size
- widths of columns and heights of rows in the format,
{{col0, col1, col2, ..., colN}, {row0, row1, row2, ..., rowM}}
If this parameter is invalid, the TableLayout will have
exactly one row and one column.Method Detail |
public TableLayoutConstraints getConstraints(java.awt.Component component)
component
- desired component
public void setConstraints(java.awt.Component component, TableLayoutConstraints constraint)
component
- desired component. This parameter cannot be null.constraint
- new set of constraints. This parameter cannot be null.
public void setColumn(double[] column)
layout.layoutContainer(container); container.repaint();or
window.pack()If this is not done, the changes in the layout will not be seen until the container is resized.
column
- heights of each of the columnsgetColumn
public void setRow(double[] row)
layout.layoutContainer(container);
container.repaint();
or
window.pack()If this is not done, the changes in the layout will not be seen until the container is resized.
row
- widths of each of the rows. This parameter cannot be null.getRow
protected void setCr(int z, double[] size)
z
- indicates row or columnpublic void setColumn(int i, double size)
layout.layoutContainer(container);
container.repaint();
or
window.pack()If this is not done, the changes in the layout will not be seen until the container is resized.
i
- zero-based index of column to set. If this parameter is not
valid, an ArrayOutOfBoundsException will be thrown.size
- width of the column. This parameter cannot be null.getColumn
public void setRow(int i, double size)
layout.layoutContainer(container);
container.repaint();
or
window.pack()If this is not done, the changes in the layout will not be seen until the container is resized.
i
- zero-based index of row to set. If this parameter is not
valid, an ArrayOutOfBoundsException will be thrown.size
- height of the row. This parameter cannot be null.getRow
protected void setCr(int z, int i, double size)
z
- indicates row or columni
- indicates which cr to resizepublic double[] getColumn()
setColumn
public double[] getRow()
setRow
public double getColumn(int i)
i
- zero-based index of row to get. If this parameter is not valid,
an ArrayOutOfBoundsException will be thrown.
setRow
public double getRow(int i)
i
- zero-based index of row to get. If this parameter is not valid,
an ArrayOutOfBoundsException will be thrown.
setRow
public int getNumColumn()
public int getNumRow()
public int getHGap()
public int getVGap()
public void setHGap(int hGap)
hGap
- the horizontal gap in pixelspublic void setVGap(int vGap)
vGap
- the horizontal gap in pixelspublic void insertColumn(int i, double size)
setColumn
.
i
- zero-based index at which to insert the columnsize
- size of the column to be insertedsetColumn
,
deleteColumn
public void insertRow(int i, double size)
setRow
.
i
- zero-based index at which to insert the rowsize
- size of the row to be insertedsetRow
,
deleteRow
public void insertCr(int z, int i, double size)
z
- indicates row or columni
- zero-based index at which to insert the crpublic void deleteColumn(int i)
setColumn
.
i
- zero-based index of column to deletesetColumn
,
deleteColumn
public void deleteRow(int i)
setRow
. There must be at least two rows in order
to delete a row.
i
- zero-based index of row to deletesetRow
,
deleteRow
protected void deleteCr(int z, int i)
z
- indicates row or columni
- zero-based index of cr to deletepublic java.lang.String toString()
public java.awt.Component[] getInvalidEntry()
getOverlappingEntry
public java.awt.Component[] getOverlappingEntry()
getInvalidEntry
protected void calculateSize(java.awt.Container container)
crSpec[R]
and crSpec[C]
and the size of the container. The result is stored in crSize[R]
and crSize[C]
.
container
- container using this TableLayoutprotected int assignAbsoluteSize(int z, int availableSize)
z
- indicates row or columnavailableSize
- amount of space available in the container
protected int assignRelativeSize(int z, int availableSize)
z
- indicates row or columnavailableSize
- amount of space available in the container
protected void assignFillSize(int z, int availableSize)
z
- indicates row or columnavailableSize
- amount of space available in the container
protected void calculateOffset(int z, java.awt.Insets inset)
z
- indicates row or columnprotected int assignPrefMinSize(int z, int availableSize, double typeOfSize)
z
- indicates row or columnavailableSize
- amount of space available in the containertypeOfSize
- indicates preferred or minimum
public void layoutContainer(java.awt.Container container)
User code should not have to call this method directly.
layoutContainer
in interface java.awt.LayoutManager
container
- container being served by this layout managerprotected int[] calculateSizeAndOffset(TableLayout.Entry entry, int preferredSize, boolean isColumn)
entry
- entry containing component and contraintspreferredSize
- previously calculated preferred width/height of
componentisColumn
- if true, this method is being called to calculate
the offset/size of a column. if false,... of a row.
public java.awt.Dimension preferredLayoutSize(java.awt.Container container)
preferredLayoutSize
in interface java.awt.LayoutManager
container
- container being served by this layout manager
public java.awt.Dimension minimumLayoutSize(java.awt.Container container)
minimumLayoutSize
in interface java.awt.LayoutManager
container
- container being served by this layout manager
protected java.awt.Dimension calculateLayoutSize(java.awt.Container container, double typeOfSize)
container
- container whose size is being calculatedtypeOfSize
- indicates preferred or minimum
protected int calculateLayoutSize(java.awt.Container container, int z, double typeOfSize, TableLayout.Entry[] entryList, java.awt.Dimension[] prefMinSize)
container
- container whose size is being calculatedtypeOfSize
- indicates preferred or minimumentryList
- list of Entry objectsprefMinSize
- list of preferred or minimum sizes
public void addLayoutComponent(java.lang.String name, java.awt.Component component)
addLayoutComponent
in interface java.awt.LayoutManager
name
- indicates entry's position and anchorcomponent
- component to addpublic void addLayoutComponent(java.awt.Component component, java.lang.Object constraint)
addLayoutComponent
in interface java.awt.LayoutManager2
component
- component to addconstraint
- indicates entry's position and alignmentpublic void removeLayoutComponent(java.awt.Component component)
removeLayoutComponent
in interface java.awt.LayoutManager
component
- component being removedpublic java.awt.Dimension maximumLayoutSize(java.awt.Container target)
maximumLayoutSize
in interface java.awt.LayoutManager2
target
- the component which needs to be laid out
public float getLayoutAlignmentX(java.awt.Container parent)
getLayoutAlignmentX
in interface java.awt.LayoutManager2
public float getLayoutAlignmentY(java.awt.Container parent)
getLayoutAlignmentY
in interface java.awt.LayoutManager2
public void invalidateLayout(java.awt.Container target)
invalidateLayout
in interface java.awt.LayoutManager2
public static void main(java.lang.String[] args)
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