GPanel

java.lang.Object
- ch.aplu.util.GPanel

```
public class GPanel
extends java.lang.Object
```
Simple graphics window of default size 501x501 pixels (client drawing area) using a coordinate system with x-axis from left to right, y-axis from bottom to top (called window coordinates, default range 0..1, 0..1). The drawing methods perform all drawings in an offscreen buffer and automatically repaint it on the screen, so the graphics is shown step-by-step.

A current graph position is used, that remembers the end position of the last drawing process and where new drawings start.

By default the window may be resized by mouse dragging as long as resizable(false) isn't called. Resizing transforms the current graphics content through an affine transformation from the offscreen buffer. In this process, some graphics resolution is lost.

If pixel accuracy is needed, set the window coordinates to 500, 500.

Clicking the title bar's close button will terminate the application by calling System.exit(0) unless an ExitListener is registered.

More than one GPanel may be instantiated. They are automatically positioned two-by-two.

All constructors and Swing methods are invoked by the Event Dispatch Thread (EDT). Therefore GPanel is no longer derived from JPanel, but contains a JPanel now (has-a relation). If you need some special methods from the internal JPanel, call getPane().

Some library defaults of the GPanel window can be modified by using a Java properties file aplu_util.properties. For more details consult aplu_util.properties file found in the distribution.

When the close button of the GPanel window title bar is hit, System.exit(0) is executed that terminates the JVM, but you can modifiy this behavior by registering your own implementation of the ExitListener interface or by using the key GPanelClosingMode in aplu_util.properties.

Do not mix with Graphics or Graphics2D methods. Use GWindow instead.

See Also:
GPane, GWindow

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`APPLETFRAME` Mode for a GPanel used as standalone window in a applet.
`static int`	`EMBEDDED` Mode for a GPanel embedded in a top-level window (no longer supported).
`static Fullscreen`	`FULLSCREEN` Instance of class Fullscreen.
`static int`	`NOTITLEBAR` Mode for a GPanel with no title bar.
`static int`	`STANDARD` Mode for a standard GPanel.

Constructor Summary

Constructors
Constructor and Description
`GPanel()` Construct a GPanel and show the window.
`GPanel(boolean visible)` Same as GPanel() with given visibility.
`GPanel(double xmin, double xmax, double ymin, double ymax)` Construct a GPanel with given window coordinates
`GPanel(double xmin, double xmax, double ymin, double ymax, boolean visible)` Same as GPanel() with given window coordinates and visibility.
`GPanel(int mode)` Construct a GPanel for special purposes.
`GPanel(int mode, Size size)` Same as GPanel() with given mode and window size (client area).
`GPanel(javax.swing.JMenuBar menuBar)` Same as GPanel() but show given menuBar.
`GPanel(javax.swing.JMenuBar menuBar, boolean visible)` Same as GPanel() with given menuBar and visibility.
`GPanel(javax.swing.JMenuBar menuBar, double xmin, double xmax, double ymin, double ymax)` Same as GPanel(xmin, xmax, ymin, ymax) with given menuBar.
`GPanel(javax.swing.JMenuBar menuBar, double xmin, double xmax, double ymin, double ymax, boolean visible)` Same as GPanel() with given menuBar, window coordinates and visibility.
`GPanel(Size size)` Same as GPanel() with given window size (client area).
`GPanel(Size size, java.lang.String title, javax.swing.JMenuBar menuBar, double xmin, double xmax, double ymin, double ymax, boolean visible)` Same as GPanel() with given window size (client area), title, menuBar, window coordinates and visibility.
`GPanel(java.lang.String title)` Same as GPanel() with given title.
`GPanel(java.lang.String title, boolean visible)` Same as GPanel() with given title and visibility.
`GPanel(java.lang.String title, double xmin, double xmax, double ymin, double ymax)` Same as GPanel(xmin, xmax, ymin, ymax) with given title.
`GPanel(java.lang.String title, double xmin, double xmax, double ymin, double ymax, boolean visible)` Same as GPanel() with given title, window coordinates and visibility.
`GPanel(java.lang.String title, javax.swing.JMenuBar menuBar)` Same as GPanel() with given title and menuBar.
`GPanel(java.lang.String title, javax.swing.JMenuBar menuBar, boolean visible)` Same as GPanel() with given title, menuBar and visibility.
`GPanel(java.lang.String title, javax.swing.JMenuBar menuBar, double xmin, double xmax, double ymin, double ymax)` Same as GPanel(xmin, xmax, ymin, ymax) with given title and menuBar.
`GPanel(java.lang.String title, javax.swing.JMenuBar menuBar, double xmin, double xmax, double ymin, double ymax, boolean visible)` Same as GPanel() with given title, menuBar, window coordinates and visibility.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`_delay(int time)` Non-static version of delay().
`void`	`add(java.awt.Component comp)` Same as addComponent() (deprecated).
`void`	`addComponent(java.awt.Component comp)` Append the specified component to the container.
`void`	`addExitListener(ExitListener exitListener)` Register an ExitListener to get a notification when the close button is clicked.
`void`	`addMouseListener(java.awt.event.MouseListener listener)` Invoke the internal JPanels addMouseListener().
`void`	`addMouseMotionListener(java.awt.event.MouseMotionListener listener)` Invoke the internal JPanels addMouseMotionListener().
`void`	`addMouseWheelListener(java.awt.event.MouseWheelListener listener)` Invoke the internal JPanels addMouseWheelListener().
`void`	`addStatusBar(int height)` Add a status window attached at the bottom of the GPanel window.
`void`	`applyTransform(java.awt.geom.AffineTransform at)` Apply the given AffineTransform to offscreen buffer.
`void`	`arc(double radius, double startAngle, double extendAngle)` Draw an arc with center at the current graph position and given radius in window coordinates.
`java.awt.Color`	`bgColor(java.awt.Color color)` Set the background color.
`java.awt.Color`	`bgColor(java.lang.String colorStr)` Set the background color using the given X11 color name.
`void`	`circle(double radius)` Draw a circle with center at the current graph position and given radius in horizontal window coordinates.
`void`	`clear()` Clear the graphics window (fully paint with background color) (and the offscreen buffer used by the window).
`void`	`clearStore(java.awt.Color color)` Clear store buffer by uniformly painting it with with given color.
`void`	`clearStore(java.lang.String colorStr)` Clear store buffer by uniformly painting it with with the given X11 color name.
`java.awt.Color`	`color(java.awt.Color color)` Same as setColor(Color color) (deprecated).
`java.awt.Color`	`color(java.lang.String colorStr)` Same as setColor(String colorStr) (deprecated).
`void`	`cubicBezier(double x1, double y1, double xc1, double yc1, double xc2, double yc2, double x2, double y2)` Draw a cubic bezier curve.
`void`	`cubicBezier(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double ptc1, java.awt.geom.Point2D.Double ptc2, java.awt.geom.Point2D.Double pt2)` Draw a cubic bezier curve.
`static void`	`delay(int time)` Delay execution for the given amount of time ( in ms ).
`void`	`disableClose(boolean b)` Disable/enable the title bar's closing button.
`void`	`dispose()` Release all used system resources (offscreen buffer, graphics context) and unblock getKeyWait() and getKeyCodeWait() and waiting Monitor.putSleep().
`void`	`draw(double x, double y)` Draw a line from current graph position to given window coordinates and set the graph position to the endpoint.
`void`	`draw(java.awt.geom.Point2D.Double pt)` Draw a line from current graph position to given point (in window coordinates) and set the graph position to the endpoint.
`void`	`ellipse(double a, double b)` Draw an ellipse with center at the current graph position and given horizontal and vertical axes.
`boolean`	`enableRepaint(boolean doRepaint)` Enable or disable the automatic repaint in graphics methods.
`void`	`erase()` Same as clear() but let the current graph position unchanged.
`void`	`fill(double x, double y, java.awt.Color color, java.awt.Color replacement)` Change the color of the bounded region with the given internal point to the replacement color using the flood fill algorithm.
`void`	`fill(double x, double y, java.lang.String colorStr, java.lang.String replacementStr)` Change the color of the bounded region with the given internal point to the replacement color using the flood fill algorithm.
`void`	`fill(java.awt.geom.Point2D.Double pt, java.awt.Color color, java.awt.Color replacement)` Change the color of the bounded region with the given internal point to the replacement color using the flood fill algorithm.
`void`	`fill(java.awt.geom.Point2D.Double pt, java.lang.String colorStr, java.lang.String replacementStr)` Change the color of the bounded region with the given internal point to the replacement color using the flood fill algorithm.
`void`	`fillArc(double radius, int startAngle, int extendAngle)` Draw a filled arc with center at the current graph position and given radius in window coordinates.
`void`	`fillCircle(double radius)` Draw a filled circle with center at the current graph position and given radius in window coordinates using the current color.
`void`	`fillEllipse(double a, double b)` Draw a filled ellipse with center at the current graph position and given horizontal and vertical axes.
`void`	`fillGeneralPath(java.awt.geom.GeneralPath gp)` Fill a figure defined by the given GeneralPath (using window coordinates) using the current color.
`void`	`fillPolygon(double[] x, double[] y)` Draw a filled polygon with given corner coordinates in window coordinates using the current color.
`void`	`fillPolygon(java.awt.geom.Point2D.Double[] corner)` Draw a filled polygon with given corner points in window coordinates using the current color.
`void`	`fillRectangle(double width, double height)` Draw a filled rectangle with center at the current graph position and given width and height in window coordinates using the current color.
`void`	`fillRectangle(double x1, double y1, double x2, double y2)` Draw a filled rectangle with given opposite corners in window coordinates using the current color.
`void`	`fillRectangle(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2)` Draw a filled rectangle with given opposite corner points in window coordinates using the current color.
`void`	`fillTriangle(double x1, double y1, double x2, double y2, double x3, double y3)` Draw a filled triangle with given corner coordinates in window coordinates using the current color.
`void`	`fillTriangle(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2, java.awt.geom.Point2D.Double pt3)` Draw a filled triangle with given corners in window coordinates using the current color.
`void`	`font(java.awt.Font font)` Select the given font for all following text operations.
`void`	`generalPath(java.awt.geom.GeneralPath gp)` Draw a figure defined by the given GeneralPath (using window coordinates).
`static java.lang.String`	`getAbout()` Return copywrite information.
`java.awt.Color`	`getBgColor()` Return the current background color.
`java.lang.String`	`getBgColorStr()` Return the current background X11 color name.
`static java.awt.geom.Point2D.Double`	`getDividingPoint(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2, double ratio)` Returns the point on the line through the point pt1 and the point pt2 that is in distance ratio times the length from pt1 to pt2 from pt1.
`static GBitmap`	`getImage(java.lang.String imagePath)` Retrieve the image either from the jar resource, from local drive or from a internet server.
`char`	`getKey()` Return the unicode character associated with last key typed.
`int`	`getKeyCode()` Return the keycode associated with last key pressed.
`int`	`getKeyCodeWait()` Wait until a key is typed and return the keycode associated with last key pressed.
`char`	`getKeyWait()` Wait until a key is typed and return the unicode character associated with it.
`int`	`getModifiers()` Return the modifiers associated with last key pressed.
`java.lang.String`	`getModifiersText()` Return the modifiers text description associated with last key pressed.
`java.awt.Graphics2D`	`getOffG2D()` Return the Graphics2D context of the offscreen buffer
`GPane`	`getPane()` Return the GPane container that holds the graphics.
`java.awt.Color`	`getPixelColor(double x, double y)` Return the color of the pixel at given window coordinates.
`java.awt.Color`	`getPixelColor(java.awt.geom.Point2D.Double pt)` Return the color of the pixel at given point (in window coordinates).
`java.lang.String`	`getPixelColorStr(double x, double y)` Return the X11 color name of the pixel at given window coordinates.
`java.lang.String`	`getPixelColorStr(java.awt.geom.Point2D.Double pt)` Return the X11 color name of the pixel at given point (in window coordinates).
`java.awt.geom.Point2D.Double`	`getPos()` Return reference to point of current graph position (in window coordinates).
`double`	`getPosX()` Return window coordinate x of current graph position.
`double`	`getPosY()` Return window coordinate y of current graph position.
`static java.lang.String`	`getVersion()` Return version information.
`GWindow`	`getWindow()` Return a reference to the GWindow used by the GPanel.
`boolean`	`image(java.awt.image.BufferedImage bi, double x, double y)` Show the GIF image from given BufferedImage at x, y window coordinates (specifies lowerleft corner of image).
`boolean`	`image(java.awt.image.BufferedImage bi, java.awt.geom.Point2D.Double pt)` Show the GIF image from given BufferedImage at given point(in window coordinates) (specifies lowerleft corner of image).
`boolean`	`image(java.lang.String imagePath, double x, double y)` Show the GIF image from given file path at given window coordinates (specifies lowerleft corner of image).
`boolean`	`image(java.lang.String imagePath, java.awt.geom.Point2D.Double pt)` Show the GIF image from given file path at given point(in window coordinates) (specifies lowerleft corner of image).
`double`	`imageHeight(java.lang.String imagePath)` Return the height (vertical size) of the GIF image from the given path (in window coordinates).
`double`	`imageWidth(java.lang.String imagePath)` Return the width (horizontal size) of the GIF image from the given path (in window coordinates).
`boolean`	`isDisposed()` Return true, if the window was disposed or released.
`boolean`	`isReady()` Test if GPanel is fully initialized.
`boolean`	`kbhit()` Return true, if a key was typed since the last call to getChar() or getCharWait().
`void`	`line(double x1, double y1, double x2, double y2)` Draw a line with given window coordinates and set the graph position to the endpoint.
`void`	`line(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2)` Draw a line with given points (in window coordinates) and set the graph position to the endpoint.
`void`	`lineWidth(int width)` Set the current line width in pixels.
`void`	`move(double x, double y)` Set the current graph position to given window coordinates (without drawing anything).
`void`	`move(int x, int y)` Same as move(double x, double y)
`void`	`move(java.awt.geom.Point2D.Double pt)` Set the current graph position to given point (in window coordinates) (without drawing anything).
`void`	`point(double x, double y)` Draw a single point at the given window coordinates.
`void`	`point(java.awt.geom.Point2D.Double pt)` Draw a single point at the given pt (in window coordinates).
`void`	`polygon(double[] x, double[] y)` Draw a polygon with given corner coordinates in window coordinates.
`void`	`polygon(java.awt.geom.Point2D.Double[] corner)` Draw a polygon with given corner points in window coordinates.
`void`	`pos(double x, double y)` Same as move(double x, double y).
`void`	`pos(java.awt.geom.Point2D.Double pt)` Same as move(Point2D.Double pt).
`boolean`	`print(GPrintable gp)` Same as print(GPrintable gp, double scale) with scale = 1.
`boolean`	`print(GPrintable gp, double scale)` Print the graphics context to an attached printer with the given magnification scale factor.
`boolean`	`printScreen()` Same printScreen(double scale) with scale = 1.
`boolean`	`printScreen(double scale)` Print the current screen view to an attached printer with the given magnification scale factor.
`void`	`quadraticBezier(double x1, double y1, double xc, double yc, double x2, double y2)` Draw a quadratic bezier curve.
`void`	`quadraticBezier(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double ptc, java.awt.geom.Point2D.Double pt2)` Draw a quadratic bezier curve.
`void`	`recallGraphics()` Copy graphics from store buffer to offscreen buffer and render it on the screen window (if enableRepaint(true)).
`void`	`rectangle(double width, double height)` Draw a rectangle with center at the current graph position and given width and height in window coordinates.
`void`	`rectangle(double x1, double y1, double x2, double y2)` Draw a rectangle with given opposite corners in window coordinates.
`void`	`rectangle(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2)` Draw a rectangle with given opposite corner points in window coordinates.
`void`	`repaint()` Invoke the internal JPanels repaint().
`void`	`resizable(boolean b)` Enable/disable resizing of the window by mouse dragging.
`java.awt.Color`	`setColor(java.awt.Color color)` Set the given new color and return the previous color
`java.awt.Color`	`setColor(java.lang.String colorStr)` Set the color to the given X11 color name.
`void`	`setEnableResize(boolean enable)` Enable/disable resizing.
`void`	`setFocusable(boolean focusable)` Set the focusable state to the specified value.
`void`	`setPaintMode()` Set the paint mode of the graphics context to overwrite with current color.
`void`	`setStatusText(java.lang.String text)` Replace the text in the status bar by the given text using the current JOptionPane font and color.
`void`	`setStatusText(java.lang.String text, java.awt.Font font, java.awt.Color color)` Replace the text in the status bar by the given text using the given font and text color.
`void`	`setXORMode(java.awt.Color c)` Sets the paint mode to alternate between the current color and the given color.
`void`	`setXORMode(java.lang.String colorStr)` Same as setXORMode(Color c), but using the given X11 color name.
`void`	`showStatusBar(boolean show)` Show or hide the status bar.
`void`	`storeGraphics()` Create a store buffer and copy current graphics to it.
`void`	`text(char c)` Draw a char at the current graph position.
`void`	`text(double x, double y, char c)` Draw a char at the given position.
`void`	`text(double x, double y, java.lang.String str)` Draw a string at the given position.
`void`	`text(double x, double y, java.lang.String str, java.awt.Font font, java.awt.Color textColor, java.awt.Color bgColor)` Draw a string at the given position with extended text attributes.
`void`	`text(double x, double y, java.lang.String str, java.awt.Font font, java.lang.String textColorStr, java.lang.String bgColorStr)` Draw a string at the given position with extended text attributes using X11 color names.
`void`	`text(java.awt.geom.Point2D.Double pt, char c)` Draw a char at the given position.
`void`	`text(java.awt.geom.Point2D.Double pt, java.lang.String str)` Draw a string at the given position.
`void`	`text(java.awt.geom.Point2D.Double pt, java.lang.String str, java.awt.Font font, java.awt.Color textColor, java.awt.Color bgColor)` Draw a string at the given position with extended text attributes.
`void`	`text(java.awt.geom.Point2D.Double pt, java.lang.String str, java.awt.Font font, java.lang.String textColorStr, java.lang.String bgColorStr)` Draw a string at the given position with extended text attributes using X11 color names.
`void`	`text(java.lang.String str)` Draw a string at the current graph position.
`void`	`title(java.lang.String title)` Set the title in the window's title bar.
`static java.awt.Color`	`toColor(java.lang.String colorStr)` Return the Color reference for the given color as string.
`java.awt.Point`	`toUser(double windowX, double windowY)` Return reference to point in user coordinate of given window coordinates.
`java.awt.Point`	`toUser(java.awt.geom.Point2D.Double windowPt)` Return reference to point in user coordinate of given point in window coordinate.
`int`	`toUserHeight(double windowHeight)` Return user coordinates increment y of given window coordinates increment y.
`int`	`toUserWidth(double windowWidth)` Return user coordinates increment x of given window coordinates increment x.
`int`	`toUserX(double windowX)` Return user coordinate x of given window coordinate x.
`int`	`toUserY(double windowY)` Return user coordinate y of given window coordinate y.
`java.awt.geom.Point2D.Double`	`toWindow(int userX, int userY)` Return reference to point in window coordinates of given user coordinates.
`java.awt.geom.Point2D.Double`	`toWindow(java.awt.Point userPt)` Return reference to point in window coordinates of given point in user coordinates.
`double`	`toWindowHeight(int userHeight)` Return window coordinates increment y of given user coordinates increment y.
`double`	`toWindowWidth(int userWidth)` Return window coordinates increment x of given user coordinates increment x.
`double`	`toWindowX(int userX)` Return window coordinate x of given user coordinate x.
`double`	`toWindowY(int userY)` Return window coordinate y of given user coordinate y.
`void`	`triangle(double x1, double y1, double x2, double y2, double x3, double y3)` Draw a triangle with given corner coordinates in window coordinates.
`void`	`triangle(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2, java.awt.geom.Point2D.Double pt3)` Draw a triangle with given corners in window coordinates.
`void`	`validate()` Validate the container.
`void`	`visible(boolean isVisible)` Select if GPanel's window is visible or not.
`void`	`window(double xmin, double xmax, double ymin, double ymax)` Set window coordinates.
`void`	`windowCenter()` Set the window position to the center of the screen.
`void`	`windowPosition(int ulx, int uly)` Set the window position (upper left corner in device coordinates).
`void`	`windowSize(int width, int height)` Set the size of the entire window (including title bar and borders) in device coordinates.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - STANDARD
```
public static int STANDARD
```
    Mode for a standard GPanel.
  - EMBEDDED
```
public static int EMBEDDED
```
    Mode for a GPanel embedded in a top-level window (no longer supported). Use a GPane instance instead.
  - APPLETFRAME
```
public static int APPLETFRAME
```
    Mode for a GPanel used as standalone window in a applet.
  - NOTITLEBAR
```
public static int NOTITLEBAR
```
    Mode for a GPanel with no title bar.
  - FULLSCREEN
```
public static Fullscreen FULLSCREEN
```
    Instance of class Fullscreen.
- Constructor Detail
  - GPanel
```
public GPanel(int mode)
```
    Construct a GPanel for special purposes.
    
    Use parameter GPanel.APPLETFRAME for an Applet in its own frame.
    
    Use parameter GPanel.NOTITLEBAR for GPanel which has no title bar. Does not show until visible(true) is called.
    
    To embed a GPanel in a top-level window (JFrame, JDialog, Browswer window, etc.) use class GPane instead.
  - GPanel
```
public GPanel(int mode,
      Size size)
```
    Same as GPanel() with given mode and window size (client area). Default window size is 501/501 (user coordinates 0..500/0..500.
    If size is an instance of Fullscreen, the size is set to the current screen width/height.
  - GPanel
```
public GPanel()
```
    Construct a GPanel and show the window. Window coordinates are 0, 1, 0, 1. (0, 0) is at lower left corner which is the current graph cursor position.
  - GPanel
```
public GPanel(boolean visible)
```
    Same as GPanel() with given visibility.
  - GPanel
```
public GPanel(Size size)
```
    Same as GPanel() with given window size (client area). User coordinates (pixels) in range 0..width-1/0..height-1
    Default window size is 501/501 (user coordinates 0..500/0..500.
    Use GPanel(new Size(width, height)) to set size to width/height.
    If size is an instance of Fullscreen, the size is set to the current screen width/height and the window is positioned at upper left corner.
  - GPanel
```
public GPanel(javax.swing.JMenuBar menuBar)
```
    Same as GPanel() but show given menuBar.
  - GPanel
```
public GPanel(javax.swing.JMenuBar menuBar,
      boolean visible)
```
    Same as GPanel() with given menuBar and visibility.
  - GPanel
```
public GPanel(java.lang.String title)
```
    Same as GPanel() with given title.
  - GPanel
```
public GPanel(java.lang.String title,
      boolean visible)
```
    Same as GPanel() with given title and visibility.
  - GPanel
```
public GPanel(java.lang.String title,
      javax.swing.JMenuBar menuBar)
```
    Same as GPanel() with given title and menuBar.
  - GPanel
```
public GPanel(java.lang.String title,
      javax.swing.JMenuBar menuBar,
      boolean visible)
```
    Same as GPanel() with given title, menuBar and visibility.
  - GPanel
```
public GPanel(double xmin,
      double xmax,
      double ymin,
      double ymax)
```
    Construct a GPanel with given window coordinates. (0, 0) is lower left If you need to draw as accurate as possible on pixels use GPanel(0, 500, 0, 500). Set the current graph position to (0, 0).
  - GPanel
```
public GPanel(double xmin,
      double xmax,
      double ymin,
      double ymax,
      boolean visible)
```
    Same as GPanel() with given window coordinates and visibility.
  - GPanel
```
public GPanel(javax.swing.JMenuBar menuBar,
      double xmin,
      double xmax,
      double ymin,
      double ymax)
```
    Same as GPanel(xmin, xmax, ymin, ymax) with given menuBar.
  - GPanel
```
public GPanel(javax.swing.JMenuBar menuBar,
      double xmin,
      double xmax,
      double ymin,
      double ymax,
      boolean visible)
```
    Same as GPanel() with given menuBar, window coordinates and visibility.
  - GPanel
```
public GPanel(java.lang.String title,
      double xmin,
      double xmax,
      double ymin,
      double ymax)
```
    Same as GPanel(xmin, xmax, ymin, ymax) with given title.
  - GPanel
```
public GPanel(java.lang.String title,
      double xmin,
      double xmax,
      double ymin,
      double ymax,
      boolean visible)
```
    Same as GPanel() with given title, window coordinates and visibility.
  - GPanel
```
public GPanel(java.lang.String title,
      javax.swing.JMenuBar menuBar,
      double xmin,
      double xmax,
      double ymin,
      double ymax)
```
    Same as GPanel(xmin, xmax, ymin, ymax) with given title and menuBar.
  - GPanel
```
public GPanel(java.lang.String title,
      javax.swing.JMenuBar menuBar,
      double xmin,
      double xmax,
      double ymin,
      double ymax,
      boolean visible)
```
    Same as GPanel() with given title, menuBar, window coordinates and visibility.
  - GPanel
```
public GPanel(Size size,
      java.lang.String title,
      javax.swing.JMenuBar menuBar,
      double xmin,
      double xmax,
      double ymin,
      double ymax,
      boolean visible)
```
    Same as GPanel() with given window size (client area), title, menuBar, window coordinates and visibility.
    User coordinates (pixels) in range 0..width-1/0..height-1
    Default window size is 501/501.
    Set menuBar = null, if no menu is used.
    If size is an instance of Fullscreen, the size is set to the current screen width/height.
- Method Detail
  - addExitListener
```
public void addExitListener(ExitListener exitListener)
```
    Register an ExitListener to get a notification when the close button is clicked. After registering the automatic termination is disabled. To terminate the application, System.exit() can be called.
  - window
```
public void window(double xmin,
          double xmax,
          double ymin,
          double ymax)
```
    Set window coordinates. left_x, right_x, bottom_y, top_y
  - visible
```
public void visible(boolean isVisible)
```
    Select if GPanel's window is visible or not. (You may draw into an invisible GPanel and show it afterwards.)
  - getWindow
```
public GWindow getWindow()
```
    Return a reference to the GWindow used by the GPanel. Can be used to access the surrounding JFrame because GWindow is derived from JFrame.
  - isReady
```
public boolean isReady()
```
    Test if GPanel is fully initialized. Only used for GPanel.EMBEDDED.
    (If GPanel is embedded in an other component, any graphics drawing operation must be postponed until the parent component is shown because the GPanel's size is only known at this time.)
    Because yield() is called, it can be used in a narrow loop.
  - print
```
public boolean print(GPrintable gp,
            double scale)
```
    Print the graphics context to an attached printer with the given magnification scale factor. scale = 1 will print on standard A4 format paper. The given gp must implement the GPrintable interface, e.g. the single method void draw(), where all the drawing into the GPanel must occur. A standard printer dialog is shown before printing is started.
    Return false, if printing is canceled in this dialog, return true, when print data is sent to the printer spooler. (On some platforms the Java Virtual Machine crashes when changing the printer in this dialog. Use the default printer)
    Example:
    import ch.aplu.util.*; public class PrintEx extends GPanel implements GPrintable { public PrintEx() { draw(); // Draw on screen print(this); // Draw on printer } public void draw() { move(0, 0); draw(1, 0); draw(1, 1); draw(0, 1); draw(0, 0); line(0, 1, 1, 0); line(0, 0, 1, 1); } public static void main(String[] args) { new PrintEx(); } }
  print public boolean print(GPrintable gp) Same as print(GPrintable gp, double scale) with scale = 1. printScreen public boolean printScreen(double scale) Print the current screen view to an attached printer with the given magnification scale factor. A standard printer dialog is shown before printing is started. Return false, if printing is canceled in this dialog, return true, when print data is sent to the printer spooler. printScreen public boolean printScreen() Same printScreen(double scale) with scale = 1. bgColor public java.awt.Color bgColor(java.awt.Color color) Set the background color. All drawing are erased. Return the previous color. bgColor public java.awt.Color bgColor(java.lang.String colorStr) Set the background color using the given X11 color name. All drawing are erased. If the given name is not one of the predefined values, the color is not modified. Return the previous color. getBgColor public java.awt.Color getBgColor() Return the current background color. getBgColorStr public java.lang.String getBgColorStr() Return the current background X11 color name. The name is lowercase and has no blanks. Colors containing 'grey' are returned with 'gray'. The name is lowercase and has no blanks. title public void title(java.lang.String title) Set the title in the window's title bar. toUserX public int toUserX(double windowX) Return user coordinate x of given window coordinate x. toUserY public int toUserY(double windowY) Return user coordinate y of given window coordinate y. toUser public java.awt.Point toUser(java.awt.geom.Point2D.Double windowPt) Return reference to point in user coordinate of given point in window coordinate. toUser public java.awt.Point toUser(double windowX, double windowY) Return reference to point in user coordinate of given window coordinates. toUserWidth public int toUserWidth(double windowWidth) Return user coordinates increment x of given window coordinates increment x. Increment is always positive. toUserHeight public int toUserHeight(double windowHeight) Return user coordinates increment y of given window coordinates increment y. Increment is always positive. toWindowX public double toWindowX(int userX) Return window coordinate x of given user coordinate x. toWindowY public double toWindowY(int userY) Return window coordinate y of given user coordinate y. toWindow public java.awt.geom.Point2D.Double toWindow(java.awt.Point userPt) Return reference to point in window coordinates of given point in user coordinates. toWindow public java.awt.geom.Point2D.Double toWindow(int userX, int userY) Return reference to point in window coordinates of given user coordinates. toWindowWidth public double toWindowWidth(int userWidth) Return window coordinates increment x of given user coordinates increment x. Increment is always positive. toWindowHeight public double toWindowHeight(int userHeight) Return window coordinates increment y of given user coordinates increment y. Increment is always positive. lineWidth public void lineWidth(int width) Set the current line width in pixels. color public java.awt.Color color(java.awt.Color color) Same as setColor(Color color) (deprecated). setColor public java.awt.Color setColor(java.awt.Color color) Set the given new color and return the previous color color public java.awt.Color color(java.lang.String colorStr) Same as setColor(String colorStr) (deprecated). setColor public java.awt.Color setColor(java.lang.String colorStr) Set the color to the given X11 color name. If the given name is not one of the predefined values, the color is not modified. Return the previous color. line public void line(double x1, double y1, double x2, double y2) Draw a line with given window coordinates and set the graph position to the endpoint. line public void line(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2) Draw a line with given points (in window coordinates) and set the graph position to the endpoint. draw public void draw(double x, double y) Draw a line from current graph position to given window coordinates and set the graph position to the endpoint. draw public void draw(java.awt.geom.Point2D.Double pt) Draw a line from current graph position to given point (in window coordinates) and set the graph position to the endpoint. move public void move(double x, double y) Set the current graph position to given window coordinates (without drawing anything). move public void move(int x, int y) Same as move(double x, double y). ( Override java.component.move(int x, int y) ) pos public void pos(double x, double y) Same as move(double x, double y). move public void move(java.awt.geom.Point2D.Double pt) Set the current graph position to given point (in window coordinates) (without drawing anything). pos public void pos(java.awt.geom.Point2D.Double pt) Same as move(Point2D.Double pt). getPosX public double getPosX() Return window coordinate x of current graph position. getPosY public double getPosY() Return window coordinate y of current graph position. getPos public java.awt.geom.Point2D.Double getPos() Return reference to point of current graph position (in window coordinates). clear public void clear() Clear the graphics window (fully paint with background color) (and the offscreen buffer used by the window). Set the current graph position to (0, 0). If enableRepaint(false) only clear the offscreen buffer. erase public void erase() Same as clear() but let the current graph position unchanged. circle public void circle(double radius) Draw a circle with center at the current graph position and given radius in horizontal window coordinates. The graph position is unchanged. fillCircle public void fillCircle(double radius) Draw a filled circle with center at the current graph position and given radius in window coordinates using the current color. The graph position is unchanged. ellipse public void ellipse(double a, double b) Draw an ellipse with center at the current graph position and given horizontal and vertical axes. The graph position is unchanged. fillEllipse public void fillEllipse(double a, double b) Draw a filled ellipse with center at the current graph position and given horizontal and vertical axes. The graph position is unchanged. rectangle public void rectangle(double width, double height) Draw a rectangle with center at the current graph position and given width and height in window coordinates. The graph position is unchanged. rectangle public void rectangle(double x1, double y1, double x2, double y2) Draw a rectangle with given opposite corners in window coordinates. The graph position is unchanged. rectangle public void rectangle(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2) Draw a rectangle with given opposite corner points in window coordinates. The graph position is unchanged. fillRectangle public void fillRectangle(double width, double height) Draw a filled rectangle with center at the current graph position and given width and height in window coordinates using the current color. The graph position is unchanged. fillRectangle public void fillRectangle(double x1, double y1, double x2, double y2) Draw a filled rectangle with given opposite corners in window coordinates using the current color. The graph position is unchanged. fillRectangle public void fillRectangle(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2) Draw a filled rectangle with given opposite corner points in window coordinates using the current color. The graph position is unchanged. arc public void arc(double radius, double startAngle, double extendAngle) Draw an arc with center at the current graph position and given radius in window coordinates. Start angle and extend angle in degrees (zero to east, positive counterclockwise). The graph position is unchanged. fillArc public void fillArc(double radius, int startAngle, int extendAngle) Draw a filled arc with center at the current graph position and given radius in window coordinates. Start angle and extend angle in degrees (zero to east, positive counterclockwise). The graph position is unchanged. polygon public void polygon(double[] x, double[] y) Draw a polygon with given corner coordinates in window coordinates. (Both arrays must be of equal size.) The graph position is unchanged. polygon public void polygon(java.awt.geom.Point2D.Double[] corner) Draw a polygon with given corner points in window coordinates. The graph position is unchanged. fillPolygon public void fillPolygon(double[] x, double[] y) Draw a filled polygon with given corner coordinates in window coordinates using the current color. (Both arrays must be of equal size.) The graph position is unchanged. fillPolygon public void fillPolygon(java.awt.geom.Point2D.Double[] corner) Draw a filled polygon with given corner points in window coordinates using the current color. The graph position is unchanged. quadraticBezier public void quadraticBezier(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double ptc, java.awt.geom.Point2D.Double pt2) Draw a quadratic bezier curve. A quadratic bezier curve is a Bezier curve of degree 2 and is defined by 3 points: pt1, pt2, ptc (control point). The curve first endpoint is pt1, the second endpoint is pt2. The line ptc-pt1 is the tangent of the curve in point pt1. The line ptc-pt2 is the tangent of the curve in point pt2. The graph position is unchanged. quadraticBezier public void quadraticBezier(double x1, double y1, double xc, double yc, double x2, double y2) Draw a quadratic bezier curve. A quadratic bezier curve is a Bezier curve of degree 2 and is defined by 3 points: pt1, pt2, ptc (control point). The curve first endpoint is pt1, the second endpoint is pt2. The line ptc-pt1 is the tangent of the curve in point pt1. The line ptc-pt2 is the tangent of the curve in point pt2. The graph position is unchanged. cubicBezier public void cubicBezier(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double ptc1, java.awt.geom.Point2D.Double ptc2, java.awt.geom.Point2D.Double pt2) Draw a cubic bezier curve. A cubic bezier curve is a Bezier curve of degree 3 and is defined by 4 points: pt1, pt2, and the control points ptc1, ptc2. The curve first endpoint is pt1, the second endpoint is pt2. The line ptc1-pt1 is the tangent of the curve in point pt1. The line ptc2-pt2 is the tangent of the curve in point pt2. The graph position is unchanged. cubicBezier public void cubicBezier(double x1, double y1, double xc1, double yc1, double xc2, double yc2, double x2, double y2) Draw a cubic bezier curve. A cubic bezier curve is a Bezier curve of degree 3 and is defined by 4 points: pt1, pt2, and the control points ptc1, ptc2. The curve first endpoint is pt1, the second endpoint is pt2. The line ptc1-pt1 is the tangent of the curve in point pt1. The line ptc2-pt2 is the tangent of the curve in point pt2. The graph position is unchanged. triangle public void triangle(double x1, double y1, double x2, double y2, double x3, double y3) Draw a triangle with given corner coordinates in window coordinates. The graph position is unchanged. triangle public void triangle(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2, java.awt.geom.Point2D.Double pt3) Draw a triangle with given corners in window coordinates. The graph position is unchanged. fillTriangle public void fillTriangle(double x1, double y1, double x2, double y2, double x3, double y3) Draw a filled triangle with given corner coordinates in window coordinates using the current color. The graph position is unchanged. fillTriangle public void fillTriangle(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2, java.awt.geom.Point2D.Double pt3) Draw a filled triangle with given corners in window coordinates using the current color. The graph position is unchanged. generalPath public void generalPath(java.awt.geom.GeneralPath gp) Draw a figure defined by the given GeneralPath (using window coordinates). The graph position is unchanged. fillGeneralPath public void fillGeneralPath(java.awt.geom.GeneralPath gp) Fill a figure defined by the given GeneralPath (using window coordinates) using the current color. The graph position is unchanged. text public void text(java.lang.String str) Draw a string at the current graph position. The graph position is unchanged. text public void text(char c) Draw a char at the current graph position. The graph position is unchanged. text public void text(double x, double y, java.lang.String str) Draw a string at the given position. The graph position is unchanged. text public void text(java.awt.geom.Point2D.Double pt, java.lang.String str) Draw a string at the given position. The graph position is unchanged. text public void text(double x, double y, char c) Draw a char at the given position. The graph position is unchanged. text public void text(java.awt.geom.Point2D.Double pt, char c) Draw a char at the given position. The graph position is unchanged. text public void text(double x, double y, java.lang.String str, java.awt.Font font, java.awt.Color textColor, java.awt.Color bgColor) Draw a string at the given position with extended text attributes. The graph position is unchanged. text public void text(double x, double y, java.lang.String str, java.awt.Font font, java.lang.String textColorStr, java.lang.String bgColorStr) Draw a string at the given position with extended text attributes using X11 color names. The graph position is unchanged. text public void text(java.awt.geom.Point2D.Double pt, java.lang.String str, java.awt.Font font, java.awt.Color textColor, java.awt.Color bgColor) Draw a string at the given position with extended text attributes. The graph position is unchanged. text public void text(java.awt.geom.Point2D.Double pt, java.lang.String str, java.awt.Font font, java.lang.String textColorStr, java.lang.String bgColorStr) Draw a string at the given position with extended text attributes using X11 color names. The graph position is unchanged. font public void font(java.awt.Font font) Select the given font for all following text operations. point public void point(double x, double y) Draw a single point at the given window coordinates. The graph position is set to the given point. point public void point(java.awt.geom.Point2D.Double pt) Draw a single point at the given pt (in window coordinates). The graph position is set to the given point. fill public void fill(java.awt.geom.Point2D.Double pt, java.awt.Color color, java.awt.Color replacement) Change the color of the bounded region with the given internal point to the replacement color using the flood fill algorithm. fill public void fill(java.awt.geom.Point2D.Double pt, java.lang.String colorStr, java.lang.String replacementStr) Change the color of the bounded region with the given internal point to the replacement color using the flood fill algorithm. fill public void fill(double x, double y, java.awt.Color color, java.awt.Color replacement) Change the color of the bounded region with the given internal point to the replacement color using the flood fill algorithm. fill public void fill(double x, double y, java.lang.String colorStr, java.lang.String replacementStr) Change the color of the bounded region with the given internal point to the replacement color using the flood fill algorithm. image public boolean image(java.lang.String imagePath, double x, double y) Show the GIF image from given file path at given window coordinates (specifies lowerleft corner of image). From the given filename the image file is searched in the following order: - if application is packed into a jar archive, relative to the root of the jar archive - relative or absolute to current application directory - if filename starts with http://, from the given URL - add prefix _ and search relative to the root of the jar archive Return true if successful. If enableRepaint(false), the image is drawn in offscreen buffer only. image public boolean image(java.lang.String imagePath, java.awt.geom.Point2D.Double pt) Show the GIF image from given file path at given point(in window coordinates) (specifies lowerleft corner of image). From the given imagePath the image file is searched in the following order: - if application is packed into a jar archive, relative to the root of the jar archive - relative to current application directory or absolute - if imagePath starts with http://, from the given URL - add prefix _ and search relative to the root of the jar archive Return true if successful. If enableRepaint(false), the image is drawn in offscreen buffer only. image public boolean image(java.awt.image.BufferedImage bi, double x, double y) Show the GIF image from given BufferedImage at x, y window coordinates (specifies lowerleft corner of image). Return true if successful. If enableRepaint(false), the image is drawn in offscreen buffer only. image public boolean image(java.awt.image.BufferedImage bi, java.awt.geom.Point2D.Double pt) Show the GIF image from given BufferedImage at given point(in window coordinates) (specifies lowerleft corner of image). Return true if successful. If enableRepaint(false), the image is drawn in offscreen buffer only. imageWidth public double imageWidth(java.lang.String imagePath) Return the width (horizontal size) of the GIF image from the given path (in window coordinates). Return 0, if GIF image is invalid. imageHeight public double imageHeight(java.lang.String imagePath) Return the height (vertical size) of the GIF image from the given path (in window coordinates). Return 0, if GIF image is invalid. applyTransform public void applyTransform(java.awt.geom.AffineTransform at) Apply the given AffineTransform to offscreen buffer. enableRepaint public boolean enableRepaint(boolean doRepaint) Enable or disable the automatic repaint in graphics methods. Return the current state of repainting. When automatic repaint is disabled, the method repaint() must be called to show the image on the screen. Useful to avoid flickering while animating an image. If repainting is disabled clear() will only erase the offscreen buffer and not the screen. repaint() should be called after drawing the new situation in order to copy the offscreen buffer to the screen. While printing, repainting is disabled. setPaintMode public void setPaintMode() Set the paint mode of the graphics context to overwrite with current color. setXORMode public void setXORMode(java.awt.Color c) Sets the paint mode to alternate between the current color and the given color. This specifies that logical pixel operations are performed in the XOR mode, which alternates pixels between the current color and a specified XOR color. When drawing operations are performed, pixels which are the current color are changed to the specified color, and vice versa. Pixels that are of colors other than those two colors are changed in an unpredictable but reversible manner; if the same figure is drawn twice, then all pixels are restored to their original values. setXORMode public void setXORMode(java.lang.String colorStr) Same as setXORMode(Color c), but using the given X11 color name. If the given name is not one of the predefined values, the color is not modified. windowPosition public void windowPosition(int ulx, int uly) Set the window position (upper left corner in device coordinates). windowCenter public void windowCenter() Set the window position to the center of the screen. windowSize public void windowSize(int width, int height) Set the size of the entire window (including title bar and borders) in device coordinates. The window coordinates are unchanged. Due to rescaling some graphics resolution is lost. To avoid this, use size parameters when instantiating the GPanel. resizable public void resizable(boolean b) Enable/disable resizing of the window by mouse dragging. getOffG2D public java.awt.Graphics2D getOffG2D() Return the Graphics2D context of the offscreen buffer dispose public void dispose() Release all used system resources (offscreen buffer, graphics context) and unblock getKeyWait() and getKeyCodeWait() and waiting Monitor.putSleep(). After calling, don't use the GPanel instance anymore. disableClose public void disableClose(boolean b) Disable/enable the title bar's closing button. (Even a registered ExitListener will not be called.) storeGraphics public void storeGraphics() Create a store buffer and copy current graphics to it. See Also: recallGraphics(), clearStore(java.awt.Color) recallGraphics public void recallGraphics() Copy graphics from store buffer to offscreen buffer and render it on the screen window (if enableRepaint(true)). See Also: storeGraphics(), clearStore(java.awt.Color) clearStore public void clearStore(java.awt.Color color) Clear store buffer by uniformly painting it with with given color. See Also: storeGraphics(), recallGraphics() clearStore public void clearStore(java.lang.String colorStr) Clear store buffer by uniformly painting it with with the given X11 color name. If the given name is not one of the predefined values, nothing is done. See Also: storeGraphics(), recallGraphics() getVersion public static java.lang.String getVersion() Return version information. getAbout public static java.lang.String getAbout() Return copywrite information. getPixelColor public java.awt.Color getPixelColor(double x, double y) Return the color of the pixel at given window coordinates. getPixelColor public java.awt.Color getPixelColor(java.awt.geom.Point2D.Double pt) Return the color of the pixel at given point (in window coordinates). getPixelColorStr public java.lang.String getPixelColorStr(double x, double y) Return the X11 color name of the pixel at given window coordinates. The name is lowercase and has no blanks. Colors containing 'grey' are returned with 'gray'. getPixelColorStr public java.lang.String getPixelColorStr(java.awt.geom.Point2D.Double pt) Return the X11 color name of the pixel at given point (in window coordinates). The name is lowercase and has no blanks. Colors containing 'grey' are returned with 'gray'. setFocusable public void setFocusable(boolean focusable) Set the focusable state to the specified value. repaint public void repaint() Invoke the internal JPanels repaint(). addMouseListener public void addMouseListener(java.awt.event.MouseListener listener) Invoke the internal JPanels addMouseListener(). addMouseMotionListener public void addMouseMotionListener(java.awt.event.MouseMotionListener listener) Invoke the internal JPanels addMouseMotionListener(). addMouseWheelListener public void addMouseWheelListener(java.awt.event.MouseWheelListener listener) Invoke the internal JPanels addMouseWheelListener(). kbhit public boolean kbhit() Return true, if a key was typed since the last call to getChar() or getCharWait(). The one-character buffer is not changed. Put the current thread to sleep for 1 ms, to improve response time when used in a loop. getKey public char getKey() Return the unicode character associated with last key typed. The one-character buffer is cleared. Return KeyEvent.CHAR_UNDEFINED if the buffer is empty. getKeyCode public int getKeyCode() Return the keycode associated with last key pressed. The one-character buffer is cleared. Return (int)KeyEvent.CHAR_UNDEFINED, if the buffer is empty. getKeyWait public char getKeyWait() Wait until a key is typed and return the unicode character associated with it. Unblocked and returning KeyEvent.CHAR_UNDEFINED by calling dispose() (unless in mode RELEASE_ON_CLOSE). getKeyCodeWait public int getKeyCodeWait() Wait until a key is typed and return the keycode associated with last key pressed. Unblocked and returning KeyEvent.VK_UNDEFINED by calling dispose() (unless in mode RELEASE_ON_CLOSE). getModifiers public int getModifiers() Return the modifiers associated with last key pressed. getModifiersText public java.lang.String getModifiersText() Return the modifiers text description associated with last key pressed. addComponent public void addComponent(java.awt.Component comp) Append the specified component to the container. add public void add(java.awt.Component comp) Same as addComponent() (deprecated). validate public void validate() Validate the container. getPane public GPane getPane() Return the GPane container that holds the graphics. _delay public void _delay(int time) Non-static version of delay(). Checks if GPanel is disposed and throws RuntimeException. delay public static void delay(int time) Delay execution for the given amount of time ( in ms ). addStatusBar public void addStatusBar(int height) Add a status window attached at the bottom of the GPanel window. The dialog has no decoration, the same width as the GPanel and the given height in pixels. If the GPanel is full screen or EMBEDDED, no status bar is attached. setStatusText public void setStatusText(java.lang.String text) Replace the text in the status bar by the given text using the current JOptionPane font and color. The text is left-justified, vertical-centered and may be multi-line. If there is no status bar, nothing happens. setStatusText public void setStatusText(java.lang.String text, java.awt.Font font, java.awt.Color color) Replace the text in the status bar by the given text using the given font and text color. The text is left-justified, vertical-centered and may be multi-line. If there is no status bar, nothing happens. showStatusBar public void showStatusBar(boolean show) Show or hide the status bar. If there is no status bar, nothing happens. toColor public static java.awt.Color toColor(java.lang.String colorStr) Return the Color reference for the given color as string. The X11 color names are supported. Returns: the Color reference or null, if the given color is not one of the predefined values isDisposed public boolean isDisposed() Return true, if the window was disposed or released. setEnableResize public void setEnableResize(boolean enable) Enable/disable resizing. getImage public static GBitmap getImage(java.lang.String imagePath) Retrieve the image either from the jar resource, from local drive or from a internet server. From the given imagePath the image file is searched in the following order: - if application is packed into a jar archive, relative to the root of the jar archive - relative to current application directory or absolute - if imagePath starts with http://, from the given URL - add prefix _ and search relative to the root of the jar archive Parameters: imagePath - the file name or url Returns: the buffered image or null, if the image search fails getDividingPoint public static java.awt.geom.Point2D.Double getDividingPoint(java.awt.geom.Point2D.Double pt1, java.awt.geom.Point2D.Double pt2, double ratio) Returns the point on the line through the point pt1 and the point pt2 that is in distance ratio times the length from pt1 to pt2 from pt1. For ratio < 0 the point is in the opposite direction. Parameters: pt1 - the start point of the line section pt2 - the end point of the line section ratio - the distance ratio (any negative or positive double value) Returns: the dividing point

Class GPanel

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

STANDARD

EMBEDDED

APPLETFRAME

NOTITLEBAR

FULLSCREEN

Constructor Detail

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

GPanel

Method Detail

addExitListener

window

visible

getWindow

isReady

print

print

printScreen

printScreen

bgColor

bgColor

getBgColor

getBgColorStr

title

toUserX

toUserY

toUser

toUser

toUserWidth

toUserHeight

toWindowX

toWindowY

toWindow

toWindow

toWindowWidth

toWindowHeight

lineWidth

color

setColor

color

setColor

line

line

draw

draw

move

move

pos

move

pos

getPosX

getPosY

getPos

clear

erase

circle

fillCircle