gishur.gui2.painter
Class LinePainter
java.lang.Object
|
+--gishur.gui2.Painter
|
+--gishur.gui2.painter.LinePainter
- public class LinePainter
- extends Painter
A Painter
for lines.
LinePainters
are created by
LineStyles
. One of their tasks is to calculate the size
of the screen which has to be drawn if an object using this LinePainter
must
be redrawn. For this purpose, the method recalculate(gishur.gui2.RenderContext, gishur.gui2.PropertyStatusReader, gishur.core.Parameters)
must be called
with the line's properties, location etc. as arguments.
The other task is to perform the drawing operation with draw(java.awt.Graphics, gishur.gui2.RenderContext, gishur.gui2.PropertyStatusReader, byte)
, using the
DrawProperties
of the calling object. These properties, settable
with DrawAtom.setProperty(java.lang.String, java.lang.Object)
, determine the line's apperance, e.g.
its filling colour, border color, border width, visiblity etc.
Here is an overview of the properties used by a LinePainter
:
Properties Summary |
Key |
Value Type |
Default value |
Meaning |
color |
java.awt.Color |
java.awt.Color.black |
The colour of the inner area of this line. |
width |
java.lang.Integer |
1 |
Determines the thickness of the line. |
border.visible |
java.lang.Boolean |
false |
If this property is set to true , a one-pixel
border will drawn all around this point. |
border.color |
java.awt.Color |
java.awt.Color.yellow |
The colour of the optional one-pixel border around the
point. |
- Version:
- 1.0
- Author:
- Thomas Wolf
Fields inherited from class gishur.gui2.Painter |
LEVEL_0, LEVEL_1, LEVEL_2, LEVEL_3, LEVEL_ALL, LEVEL_BITS_USED, LEVEL_DEFAULT, LEVEL_FIRST, LEVEL_LAST, LOCATEABLE, VISIBLE |
Method Summary |
protected void |
draw(java.awt.Graphics g,
RenderContext context,
PropertyStatusReader prop,
byte level)
Draws the specified level of this Painter using the
given Graphics object and RenderContext for drawing,
and the given PropertyStatusReader for reading properties. |
protected java.awt.Point |
getRelativeAlignmentPoint(java.awt.Point p,
byte h_align,
byte v_align)
Returns an alignment point for the given alignment values relatively to the
represented line. |
protected void |
recalculate(RenderContext context,
PropertyStatusReader prop,
Parameters param)
Recalculates this Painter using the given RenderContext ,
PropertyStatusReader , local point information and other parameters. |
Methods inherited from class gishur.gui2.Painter |
addBounds, addBounds, alignTo, alignTo, calculateDockingPoint, contains, getAlignmentPoint, height, isOnLevel, level, locateable, name, outline, reshape, setBounds, setBounds, setLevel, setLocation, setName, setOutline, setSubTypePrefix, style, visible, width, x, y |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LinePainter
public LinePainter()
- Default constructor.
recalculate
protected void recalculate(RenderContext context,
PropertyStatusReader prop,
Parameters param)
- Recalculates
this
Painter
using the given RenderContext
,
PropertyStatusReader
, local point information and other parameters.
- Overrides:
recalculate
in class Painter
- Parameters:
context
- the RenderContext
to useprop
- the PropertyStatusReader
to use for reading propertiesparam
- a Parameters
-object for location and other parameters parsed
by the DisplayObject
, that uses this
Painter
.
draw
protected void draw(java.awt.Graphics g,
RenderContext context,
PropertyStatusReader prop,
byte level)
- Draws the specified level of
this
Painter
using the
given Graphics
object and RenderContext
for drawing,
and the given PropertyStatusReader
for reading properties.
- Overrides:
draw
in class Painter
- Parameters:
g
- the Graphics
to draw oncontext
- the RenderContext
to useprop
- the PropertyStatusReader
to use for reading propertieslevel
- the level to draw
getRelativeAlignmentPoint
protected java.awt.Point getRelativeAlignmentPoint(java.awt.Point p,
byte h_align,
byte v_align)
- Returns an alignment point for the given alignment values relatively to the
represented line.
- Overrides:
getRelativeAlignmentPoint
in class Painter
- Parameters:
p
- a Point
object where to store the calculated point or
null
.h_align
- an alignment value
(-128==Alignment.LEFT
≤0==Alignment.CENTER
≤127==Alignment.RIGHT
)
for the horizontal alignmentv_align
- an alignment value
(-128==Alignment.TOP
≤0==Alignment.CENTER
≤127==Alignment.BOTTOM
)
for the vertical alignment