public class DisplayAdapter extends java.lang.Object implements IDisplayServer
IDisplayServer
interface definition.Constructor and Description |
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DisplayAdapter() |
Modifier and Type | Method and Description |
---|---|
java.lang.Object |
createFont(FontDefinition fd)
Attempts to create a new font resource associated with a specific device
for use in rendering or computations
|
void |
debug()
Lists out all resources that were previously logged explicitly by the
logCreation(Object) method or those internally created by
each of the resource creation methods. |
void |
dispose()
A notification sent to the device to free all allocated system resources.
|
java.lang.Object |
getColor(ColorDefinition cd)
Attempts to create a new color resource associated with a specific device
|
int |
getDpiResolution()
Returns the resolution of the device in dots per inch As an example, for
a display screen, the dots correspond to pixels and a typical value for a
Win32 OS is 96 DPI.
|
java.util.Locale |
getLocale()
Provides the locale to display server implementations as needed to
retrieve localized resources for presentation.
|
java.lang.Object |
getObserver()
An observer is typically associated with certain device types to aid in
image loading and image metadata retrieval.
|
Size |
getSize(java.lang.Object oImage)
Returns the size(width, height) of the device specific image that was
previously loaded by the
loadImage(URL) method |
ITextMetrics |
getTextMetrics(Label la)
An instance of a text metrics computation class capable of providing text
metric information associated with a given Label to aid in typically
computing the size of rendered text
|
ITextMetrics |
getTextMetrics(Label la,
boolean autoReuse)
An instance of a text metrics computation class capable of providing text
metric information associated with a given Label to aid in typically
computing the size of rendered text
|
com.ibm.icu.util.ULocale |
getULocale()
Provides the locale to display server implementations as needed to
retrieve localized resources for presentation.
|
java.lang.Object |
loadImage(java.net.URL url)
Attempts to use device specific libraries to load an image for use with
the device renderer
|
void |
logCreation(java.lang.Object oMisc)
Log creation of a resource for which leaks are to be tracked
|
void |
setDpiResolution(int dpi)
Sets the dpi resolution.
|
void |
setGraphicsContext(java.lang.Object graphicContext)
Set the graphic context on the device renderer, which is required for font computations
(SWT uses org.eclipse.swt.graphics.GC and Swing uses java.awt.Graphics2D)
It is the responsibility of the caller to dispose the Graphics Context
|
void |
setLocale(com.ibm.icu.util.ULocale lcl)
A convenience method provided to associate a locale with a display server
|
void |
setResourceFinder(IResourceFinder resourceFinder)
Set the resource finder, which will be used by loading image.
|
public void debug()
IDisplayServer
logCreation(Object)
method or those internally created by
each of the resource creation methods. Once this method is invoked, all
entries written into the log should be flushed.debug
in interface IDisplayServer
public void logCreation(java.lang.Object oMisc)
IDisplayServer
logCreation
in interface IDisplayServer
oMisc
- A device-specific object being createdpublic java.lang.Object createFont(FontDefinition fd)
IDisplayServer
createFont
in interface IDisplayServer
fd
- An font description for which a device specific resource is
being requestedpublic java.lang.Object getColor(ColorDefinition cd)
IDisplayServer
getColor
in interface IDisplayServer
cd
- A color description for which a device specific resource is
being requestedpublic int getDpiResolution()
IDisplayServer
getDpiResolution
in interface IDisplayServer
public void setDpiResolution(int dpi)
IDisplayServer
setDpiResolution
in interface IDisplayServer
dpi
- The number of dots per inchpublic java.lang.Object loadImage(java.net.URL url) throws ChartException
IDisplayServer
loadImage
in interface IDisplayServer
url
- The URL associated with the image locationChartException
public Size getSize(java.lang.Object oImage)
IDisplayServer
loadImage(URL)
methodgetSize
in interface IDisplayServer
oImage
- The image for which the size is being requestedpublic java.lang.Object getObserver()
IDisplayServer
getObserver
in interface IDisplayServer
public ITextMetrics getTextMetrics(Label la)
IDisplayServer
getTextMetrics
in interface IDisplayServer
la
- The Label instance for which text metrics are being requestedpublic final java.util.Locale getLocale()
IDisplayServer
getLocale
in interface IDisplayServer
public final com.ibm.icu.util.ULocale getULocale()
IDisplayServer
getULocale
in interface IDisplayServer
public final void setLocale(com.ibm.icu.util.ULocale lcl)
setLocale
in interface IDisplayServer
lcl
- The locale to be setpublic void dispose()
IDisplayServer
dispose
in interface IDisplayServer
public void setGraphicsContext(java.lang.Object graphicContext)
IDisplayServer
setGraphicsContext
in interface IDisplayServer
public void setResourceFinder(IResourceFinder resourceFinder)
IDisplayServer
setResourceFinder
in interface IDisplayServer
public ITextMetrics getTextMetrics(Label la, boolean autoReuse)
IDisplayServer
getTextMetrics
in interface IDisplayServer
la
- The Label instance for which text metrics are being requestedCopyright © 2005-2008 Actuate Corp. All rights reserved.