org.zaval.lw
Class LwPaintManager
java.lang.Object
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+--org.zaval.lw.LwPaintManager
- All Implemented Interfaces:
- LwManager
- Direct Known Subclasses:
- LwPaintManImpl
- public abstract class LwPaintManager
- extends java.lang.Object
- implements LwManager
This manager is abstract class that is used as base for creating own paint managers
for the light weight library. To create own paint manager it is necessary to
implement the updateComponent, paintComponent and
paintOnTop methods that define update and paint algorithms for a
light weight component.
The manager provides set of methods that are supposed to be used by the library for
painting:
startPaint The method should be used to start painting for the given desktop.
paint The method can be used paint the given light-weight component including
its child components.
repaint The method has to be used to initiate repaint for the specified component.
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Field Summary |
static java.lang.Object |
LOCKER
This is data that should be used as a synchronization locker to be synchronized with
the light-weight painting procedure. |
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Method Summary |
void |
dispose()
Disposes the manager. |
void |
paint(java.awt.Graphics g,
LwComponent c,
LwComponent p)
The method initiates painting process for the specified light weight component
using the graphics. |
protected abstract void |
paintComponent(java.awt.Graphics g,
LwComponent c,
LwComponent p)
The method is called to paint the specified component. |
protected void |
paintDesktop(java.awt.Graphics g,
LwDesktop d)
Paints the specified desktop. |
protected abstract void |
paintOnTop(java.awt.Graphics g,
LwContainer c)
The method is called whenever the specified container and its child components has been
rendered. |
void |
repaint(LwComponent c)
Repaints the specified light weight component. |
void |
repaint(LwComponent c,
int x,
int y,
int w,
int h)
Repaints a part of the specified light weight component. |
protected void |
startPaint(java.awt.Graphics g,
LwDesktop d)
The method initiates painting process for the specified root light weight component
using the graphics. |
protected abstract void |
updateComponent(java.awt.Graphics g,
LwComponent c,
LwComponent p)
The method is called to update the specified component. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LOCKER
public static final java.lang.Object LOCKER
- This is data that should be used as a synchronization locker to be synchronized with
the light-weight painting procedure.
LwPaintManager
public LwPaintManager()
repaint
public void repaint(LwComponent c)
- Repaints the specified light weight component.
- Parameters:
c - the specified light weight component.
repaint
public void repaint(LwComponent c,
int x,
int y,
int w,
int h)
- Repaints a part of the specified light weight component. The part is specified
with the bound (location and size).
- Parameters:
c - the specified light weight component.x - the x coordinate of the repainting part.y - the y coordinate of the repainting part.w - the width of the repainting part.h - the height of the repainting part.
startPaint
protected void startPaint(java.awt.Graphics g,
LwDesktop d)
- The method initiates painting process for the specified root light weight component
using the graphics. The method has to be used with a light weight root component
implementation to start painting process.
- Parameters:
g - the specified graphics.d - the specified root lightweight component.
paintDesktop
protected void paintDesktop(java.awt.Graphics g,
LwDesktop d)
- Paints the specified desktop. The method i called by the
startPaint method.
- Parameters:
g - the specified graphics.d - the specified desktop.
paint
public void paint(java.awt.Graphics g,
LwComponent c,
LwComponent p)
- The method initiates painting process for the specified light weight component
using the graphics. The method has to be used with a light weight component implementation
to paint itself.
- Parameters:
g - the specified graphics.c - the specified lightweight component.p - the specified lightweight parent component that has been painted before.
dispose
public void dispose()
- Description copied from interface:
LwManager
- Disposes the manager. The method is supposed to be used for disposing different manager related structures
to free system resources. The method is invoked by LwVCL core when the manager ends its "live".
- Specified by:
dispose in interface LwManager
updateComponent
protected abstract void updateComponent(java.awt.Graphics g,
LwComponent c,
LwComponent p)
- The method is called to update the specified component. The method has to just update
the component, it doesn't care about updating any child components.
- Parameters:
g - the specified graphics.c - the specified lightweight component to be updated.p - the specified lightweight parent component that has been updated just before.
paintComponent
protected abstract void paintComponent(java.awt.Graphics g,
LwComponent c,
LwComponent p)
- The method is called to paint the specified component. The method has to just paint
the component, it doesn't care about painting any child components.
- Parameters:
g - the specified graphics.c - the specified lightweight component to be painted.p - the specified lightweight parent component that has been painted just before.
paintOnTop
protected abstract void paintOnTop(java.awt.Graphics g,
LwContainer c)
- The method is called whenever the specified container and its child components has been
rendered. Probably the method will be redesigned.
- Parameters:
g - the specified graphics.c - the specified lightweight container.
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