| java.lang.Object
 java.awt.Toolkit
sun.awt.SunToolkit
java.awt.QtToolkit
| QtToolkit | | class QtToolkit extends SunToolkit (Code) | | The toolkit used by this AWT implementation based on the Qt library.
version:
1.8, 11/27/01 |
| Method Summary | |
| public void | activate(Window window)
| | native public void | beep()
Emits an audio beep. | | public int | checkImage(Image image, int width, int height, ImageObserver observer)
Indicates the construction status of a specified image that is
being prepared for display.
If the values of the width and height arguments are both
-1, this method returns the construction status of
a screen representation of the specified image in this toolkit.
Otherwise, this method returns the construction status of a
scaled representation of the image at the specified width
and height.
This method does not cause the image to begin loading.
An application must call prepareImage to force
the loading of an image.
This method is called by the component's checkImage
methods.
Information on the flags returned by this method can be found
with the definition of the ImageObserver interface.
Parameters:
image - the image whose status is being checked.
Parameters:
width - the width of the scaled version whose status isbeing checked, or -1.
Parameters:
height - the height of the scaled version whose statusis being checked, or -1.
Parameters:
observer - the ImageObserver object to benotified as the image is being prepared. | | public Image | createImage(ImageProducer producer)
Creates an image with the specified image producer.
Parameters:
producer - the image producer to be used. | | public Image | createImage(byte[] imagedata, int imageoffset, int imagelength)
Creates an image which decodes the image stored in the specified
byte array, and at the specified offset and length.
The data must be in some image format, such as GIF or JPEG,
that is supported by this toolkit.
Parameters:
imagedata - an array of bytes, representingimage data in a supported image format.
Parameters:
imageoffset - the offset of the beginningof the data in the array.
Parameters:
imagelength - the length of the data in the array. | | Image | createImage(Component component, int width, int height)
| | public void | deactivate(Window window)
| | public ColorModel | getColorModel()
Determines the color model of this toolkit's screen. | | public String | getDefaultCharacterEncoding()
| | public String[] | getFontList()
Returns the names of the available fonts in this toolkit.
For 1.1, the following font names are deprecated (the replacement
name follows):
- TimesRoman (use Serif)
- Helvetica (use SansSerif)
- Courier (use Monospaced)
The ZapfDingbats font is also deprecated in 1.1, but only as a
separate fontname. | | public FontMetrics | getFontMetrics(Font font)
Gets the screen metrics of the font.
Parameters:
font - a font. | | Graphics | getGraphics(Window window)
| | GraphicsEnvironment | getLocalGraphicsEnvironment()
| | protected int | getScreenHeight()
| | native public int | getScreenResolution()
Returns the screen resolution in dots-per-inch. | | protected int | getScreenWidth()
| | public boolean | prepareImage(Image image, int width, int height, ImageObserver observer)
Prepares an image for rendering.
If the values of the width and height arguments are both
-1, this method prepares the image for rendering
on the default screen; otherwise, this method prepares an image
for rendering on the default screen at the specified width and height.
The image data is downloaded asynchronously in another thread,
and an appropriately scaled screen representation of the image is
generated.
This method is called by components prepareImage
methods.
Information on the flags returned by this method can be found
with the definition of the ImageObserver interface.
Parameters:
image - the image for which to prepare ascreen representation.
Parameters:
width - the width of the desired screenrepresentation, or -1.
Parameters:
height - the height of the desired screenrepresentation, or -1.
Parameters:
observer - the ImageObserverobject to be notified as theimage is being prepared. | | public void | sync()
Synchronizes this toolkit's graphics state. |
| QtToolkit | | public QtToolkit()(Code) | | |
| activate | | public void activate(Window window)(Code) | | Show the specified window in a multi-vm environment
|
| beep | | native public void beep()(Code) | | Emits an audio beep.
since:
JDK1.1 |
| checkImage | | public int checkImage(Image image, int width, int height, ImageObserver observer)(Code) | | Indicates the construction status of a specified image that is
being prepared for display.
If the values of the width and height arguments are both
-1, this method returns the construction status of
a screen representation of the specified image in this toolkit.
Otherwise, this method returns the construction status of a
scaled representation of the image at the specified width
and height.
This method does not cause the image to begin loading.
An application must call prepareImage to force
the loading of an image.
This method is called by the component's checkImage
methods.
Information on the flags returned by this method can be found
with the definition of the ImageObserver interface.
Parameters:
image - the image whose status is being checked.
Parameters:
width - the width of the scaled version whose status isbeing checked, or -1.
Parameters:
height - the height of the scaled version whose statusis being checked, or -1.
Parameters:
observer - the ImageObserver object to benotified as the image is being prepared. the bitwise inclusive OR of theImageObserver flags for theimage data that is currently available.
See Also: java.awt.Toolkit.prepareImage(java.awt.Imageintintjava.awt.image.ImageObserver)
See Also: java.awt.Component.checkImage(java.awt.Imagejava.awt.image.ImageObserver)
See Also: java.awt.Component.checkImage(java.awt.Imageintintjava.awt.image.ImageObserver)
See Also: java.awt.image.ImageObserver
since:
JDK1.0 |
| createImage | | public Image createImage(byte[] imagedata, int imageoffset, int imagelength)(Code) | | Creates an image which decodes the image stored in the specified
byte array, and at the specified offset and length.
The data must be in some image format, such as GIF or JPEG,
that is supported by this toolkit.
Parameters:
imagedata - an array of bytes, representingimage data in a supported image format.
Parameters:
imageoffset - the offset of the beginningof the data in the array.
Parameters:
imagelength - the length of the data in the array. an image.
since:
JDK1.1 |
| deactivate | | public void deactivate(Window window)(Code) | | Hide the specified window in a multi-vm environment
|
| getColorModel | | public ColorModel getColorModel()(Code) | | Determines the color model of this toolkit's screen.
ColorModel is an class that
encapsulates the ability to translate between the
pixel values of an image and its red, green, blue,
and alpha components.
This toolkit method is called by the
getColorModel method
of the Component class.
the color model of this toolkit's screen.
See Also: java.awt.image.ColorModel
See Also: java.awt.Component.getColorModel
since:
JDK1.0 |
| getDefaultCharacterEncoding | | public String getDefaultCharacterEncoding()(Code) | | |
| getFontList | | public String[] getFontList()(Code) | | Returns the names of the available fonts in this toolkit.
For 1.1, the following font names are deprecated (the replacement
name follows):
- TimesRoman (use Serif)
- Helvetica (use SansSerif)
- Courier (use Monospaced)
The ZapfDingbats font is also deprecated in 1.1, but only as a
separate fontname. Unicode defines the ZapfDingbat characters
starting at \u2700, and as of 1.1 Java supports those characters.
the names of the available fonts in this toolkit.
since:
JDK1.0 |
| getFontMetrics | | public FontMetrics getFontMetrics(Font font)(Code) | | Gets the screen metrics of the font.
Parameters:
font - a font. the screen metrics of the specified font in this toolkit.
since:
JDK1.0 |
| getScreenHeight | | protected int getScreenHeight()(Code) | | |
| getScreenResolution | | native public int getScreenResolution()(Code) | | Returns the screen resolution in dots-per-inch.
this toolkit's screen resolution, in dots-per-inch.
since:
JDK1.0 |
| getScreenWidth | | protected int getScreenWidth()(Code) | | |
| prepareImage | | public boolean prepareImage(Image image, int width, int height, ImageObserver observer)(Code) | | Prepares an image for rendering.
If the values of the width and height arguments are both
-1, this method prepares the image for rendering
on the default screen; otherwise, this method prepares an image
for rendering on the default screen at the specified width and height.
The image data is downloaded asynchronously in another thread,
and an appropriately scaled screen representation of the image is
generated.
This method is called by components prepareImage
methods.
Information on the flags returned by this method can be found
with the definition of the ImageObserver interface.
Parameters:
image - the image for which to prepare ascreen representation.
Parameters:
width - the width of the desired screenrepresentation, or -1.
Parameters:
height - the height of the desired screenrepresentation, or -1.
Parameters:
observer - the ImageObserverobject to be notified as theimage is being prepared. true if the image has already beenfully prepared; false otherwise.
See Also: java.awt.Component.prepareImage(java.awt.Imagejava.awt.image.ImageObserver)
See Also: java.awt.Component.prepareImage(java.awt.Imageintintjava.awt.image.ImageObserver)
See Also: java.awt.image.ImageObserver
since:
JDK1.0 |
| sync | | public void sync()(Code) | | Synchronizes this toolkit's graphics state. Some window systems
may do buffering of graphics events.
This method ensures that the display is up-to-date. It is useful
for animation.
since:
JDK1.0 |
| Methods inherited from java.awt.Toolkit | public void addAWTEventListener(AWTEventListener listener, long eventMask)(Code)(Java Doc)
abstract public void beep()(Code)(Java Doc)
abstract public int checkImage(Image image, int width, int height, ImageObserver observer)(Code)(Java Doc)
abstract public Image createImage(String filename)(Code)(Java Doc)
abstract public Image createImage(URL url)(Code)(Java Doc)
abstract public Image createImage(ImageProducer producer)(Code)(Java Doc)
public Image createImage(byte[] imagedata)(Code)(Java Doc)
abstract public Image createImage(byte[] imagedata, int imageoffset, int imagelength)(Code)(Java Doc)
public AWTEventListener[] getAWTEventListeners()(Code)(Java Doc)
public AWTEventListener[] getAWTEventListeners(long eventMask)(Code)(Java Doc)
abstract public ColorModel getColorModel()(Code)(Java Doc)
public static Toolkit getDefaultToolkit()(Code)(Java Doc)
static EventQueue getEventQueue()(Code)(Java Doc)
abstract public String[] getFontList()(Code)(Java Doc)
abstract public FontMetrics getFontMetrics(Font font)(Code)(Java Doc)
Graphics getGraphics(Window window)(Code)(Java Doc)
abstract public Image getImage(String filename)(Code)(Java Doc)
abstract public Image getImage(URL url)(Code)(Java Doc)
GraphicsEnvironment getLocalGraphicsEnvironment()(Code)(Java Doc)
public int getMenuShortcutKeyMask()(Code)(Java Doc)
public static String getProperty(String key, String defaultValue)(Code)(Java Doc)
public Insets getScreenInsets(GraphicsConfiguration gc) throws HeadlessException(Code)(Java Doc)
abstract public int getScreenResolution()(Code)(Java Doc)
abstract public Dimension getScreenSize()(Code)(Java Doc)
abstract public Clipboard getSystemClipboard()(Code)(Java Doc)
final public EventQueue getSystemEventQueue()(Code)(Java Doc)
abstract protected EventQueue getSystemEventQueueImpl()(Code)(Java Doc)
public boolean isFrameStateSupported(int state) throws HeadlessException(Code)(Java Doc)
protected void loadSystemColors(int[] systemColors)(Code)(Java Doc)
void notifyAWTEventListeners(AWTEvent theEvent)(Code)(Java Doc)
abstract public boolean prepareImage(Image image, int width, int height, ImageObserver observer)(Code)(Java Doc)
public void removeAWTEventListener(AWTEventListener listener)(Code)(Java Doc)
abstract public void sync()(Code)(Java Doc)
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