## org.gnu.gdk
Class GC

    java.lang.Object
      org.gnu.glib.GObject
          org.gnu.gdk.GC

public class GC
extends GObject

All drawing operations in GDK take a GC argument. A graphics context encapsulates information about the way things are drawn, such as the foreground color or line width. By using graphics context, the number of arguments to each drawing call is reduced, and communication overhead is minimized.

Field Summary

Fields inherited from class org.gnu.glib.GObject
`eventsInitialized`

Constructor Summary
`GC(Handle handle)`
`GC(Window window)`

Method Summary
`void` `copy(GC source)` Copy the set of values (settings) from another graphics context.
`protected static void` `gdk_gc_copy(Handle dstGC, Handle srcGC)`
`protected static Handle` `gdk_gc_get_colormap(Handle gc)`
`protected static Handle` `gdk_gc_get_screen(Handle gc)`
`protected static int` `gdk_gc_get_type()`
`protected static Handle` `gdk_gc_new(Handle drawable)`
`protected static void` `gdk_gc_offset(Handle gc, int xOffset, int yOffset)`
`protected static void` `gdk_gc_set_background(Handle gc, Handle color)`
`protected static void` `gdk_gc_set_clip_mask(Handle gc, Handle mask)`
`protected static void` `gdk_gc_set_clip_origin(Handle gc, int x, int y)`
`protected static void` `gdk_gc_set_clip_rectangle(Handle gc, Handle rectangle)`
`protected static void` `gdk_gc_set_clip_region(Handle gc, Handle region)`
`protected static void` `gdk_gc_set_colormap(Handle gc, Handle colormap)`
`protected static void` `gdk_gc_set_dashes(Handle gc, int dashOffset, int[] dashList, int n)`
`protected static void` `gdk_gc_set_exposures(Handle gc, boolean exposures)`
`protected static void` `gdk_gc_set_fill(Handle gc, int fill)`
`protected static void` `gdk_gc_set_foreground(Handle gc, Handle color)`
`protected static void` `gdk_gc_set_function(Handle gc, int function)`
`protected static void` `gdk_gc_set_line_attributes(Handle gc, int lineWidth, int lineStyle, int capStyle, int joinStyle)`
`protected static void` `gdk_gc_set_rgb_bg_color(Handle gc, Handle color)`
`protected static void` `gdk_gc_set_rgb_fg_color(Handle gc, Handle color)`
`protected static void` `gdk_gc_set_stipple(Handle gc, Handle stipple)`
`protected static void` `gdk_gc_set_subwindow(Handle gc, int mode)`
`protected static void` `gdk_gc_set_tile(Handle gc, Handle tile)`
`protected static void` `gdk_gc_set_ts_origin(Handle gc, int x, int y)`
`int` `getClipXOrigin()` Getst he x origin of the clip mask.
`protected static int` `getClipXOrigin(Handle obj)`
`int` `getClipYOrigin()` Gets the y origin of the clip mask.
`protected static int` `getClipYOrigin(Handle obj)`
`Colormap` `getColormap()` Gets the colormap, if it exists.
`static GC` `getDefaultGC(Drawable d)`
`Screen` `getScreen()`
`int` `getTsXOrigin()` Gets the x origin of the tile or stipple.
`protected static int` `getTsXOrigin(Handle obj)`
`int` `getTsYOrigin()` Gets the y origin of the tile or stipple.
`protected static int` `getTsYOrigin(Handle obj)`
`void` `offset(int xOffset, int yOffset)` Offset attributes such as the clip and tile-stipple origins of the GC so that drawing at X - x_offset, y - y_offset with the offset GC has the same effect as drawing at x, y with the original GC.
`void` `setBackground(Color color)` Sets the background color for the graphics context.
`void` `setClipMask(Bitmap mask)` Sets the clip mask for a graphics context from a bitmap.
`void` `setClipOrigin(int x, int y)` Sets the origin of the clip mask.
`void` `setClipRectangle(Rectangle rect)` Sets the clip mask for a graphics context from a rectangle.
`void` `setClipRegion(Region reg)` Sets the clip mask for a graphics context from a region.
`void` `setColormap(Colormap colormap)` Sets the colormap to the given colormap.
`void` `setDashes(int dashOffset, int[] dashList)` Sets the way dashed-lines are drawn.
`void` `setExposures(boolean exposures)` Sets whether copying non-visible portions of a drawable using this graphics context generate exposure events for the corresponding regions of the destination drawable.
`void` `setFillMode(Fill mode)` Sets the fill mode for the graphic context.
`void` `setForeground(Color color)` Sets the foreground color for the graphics context.
`void` `setFunction(Function func)` Determines how the current pixel values and the pixel values being drawn are combined to produce the final pixel values.
`void` `setLineAttributes(int lineWidth, LineStyle lineStyle, CapStyle capStyle, JoinStyle joinStyle)` Sets various attributes of how lines are drawn.
`void` `setOrigin(int x, int y)` Sets the origin when using tiles or stipples with the GC.
`void` `setRGBBackground(Color color)` Sets the background color using an unallocated color.
`void` `setRGBForeground(Color color)` Sets the foreground color using an unallocated color.
`void` `setStipple(Pixmap stipple)` Sets the stipple bitmap for a graphics context.
`void` `setSubwindow(SubwindowMode mode)` Sets how drawing with this GC on a window will affect child windows.
`void` `setTile(Pixmap tile)` Sets the tile pixmap for the graphics context.

Methods inherited from class org.gnu.glib.GObject

`addEventHandler, addEventHandler, addEventHandler, addEventHandler, addEventHandler, addEventHandler, addListener, equals, freezeNotify, getBooleanProperty, getData, getData, getDoubleProperty, getEventListenerClass, getEventType, getFloatProperty, getGObjectFromHandle, getHandle, getIntFromHandle, getIntProperty, getJavaObjectProperty, getLongProperty, getNullHandle, getPixbufProperty, getProperty, getStringFromHandle, getStringProperty, hashCode, hasProperty, instantiateJGObjectFromGType, notify, removeEventHandler, removeListener, retrieveGObject, setBooleanProperty, setData, setData, setDoubleProperty, setFloatProperty, setHandle, setIntProperty, setJavaObjectProperty, setLongProperty, setPixbufProperty, setProperty, setStringProperty, thawNotify`

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### GC

    public GC(Handle handle)

### GC

    public GC(Window window)

Method Detail

### getDefaultGC

    public static GC getDefaultGC(Drawable d)

### getClipXOrigin

    public int getClipXOrigin()

  Getst he x origin of the clip mask.

### getClipYOrigin

    public int getClipYOrigin()

  Gets the y origin of the clip mask.

### getTsXOrigin

    public int getTsXOrigin()

  Gets the x origin of the tile or stipple.

### getTsYOrigin

    public int getTsYOrigin()

  Gets the y origin of the tile or stipple.

### setForeground

    public void setForeground(Color color)

  Sets the foreground color for the graphics context.

### setBackground

    public void setBackground(Color color)

  Sets the background color for the graphics context.

### setRGBForeground

    public void setRGBForeground(Color color)

  Sets the foreground color using an unallocated color. The pixel value for the color will be determined using GdkRGB. If the colormap has not previously been initialized for GdkRGB, then for pseudo-color colormaps (colormaps with a small modifiable number of colors), a colorcube will be allocated in the colormap.

  Calling this function for a GC without a colormap is an error.

### setRGBBackground

    public void setRGBBackground(Color color)

  Sets the background color using an unallocated color. The pixel value for the color will be determined using GdkRGB. If the colormap has not previously been initialized for GdkRGB, then for pseudo-color colormaps (colormaps with a small modifiable number of colors), a colorcube will be allocated in the colormap.

  Calling this function for a GC without a colormap is an error.

### setFunction

    public void setFunction(Function func)

  Determines how the current pixel values and the pixel values being drawn are combined to produce the final pixel values.

### setFillMode

    public void setFillMode(Fill mode)

  Sets the fill mode for the graphic context.

### setTile

    public void setTile(Pixmap tile)

  Sets the tile pixmap for the graphics context. This will only be used if the fill mode is TILED.

### setStipple

    public void setStipple(Pixmap stipple)

  Sets the stipple bitmap for a graphics context. The stipple will only be used if the fill mode is STIPPLED or OPAQUE_STIPPLED.

### setOrigin

    public void setOrigin(int x,
                          int y)

  Sets the origin when using tiles or stipples with the GC. The tile or stipple will be aligned such that the upper left cornor of the tile or stipple will coincide with this point.

### setClipOrigin

    public void setClipOrigin(int x,
                              int y)

  Sets the origin of the clip mask. The coordinates are interpreted relative to the upper-left cornor of the destination drawable of the current operation.

### setClipRectangle

    public void setClipRectangle(Rectangle rect)

  Sets the clip mask for a graphics context from a rectangle.

### setClipRegion

    public void setClipRegion(Region reg)

  Sets the clip mask for a graphics context from a region.

### setClipMask

    public void setClipMask(Bitmap mask)

  Sets the clip mask for a graphics context from a bitmap.

### setSubwindow

    public void setSubwindow(SubwindowMode mode)

  Sets how drawing with this GC on a window will affect child windows.

### setExposures

    public void setExposures(boolean exposures)

  Sets whether copying non-visible portions of a drawable using this graphics context generate exposure events for the corresponding regions of the destination drawable.

  See Also:
    `Drawable.drawDrawable(org.gnu.gdk.GC, org.gnu.gdk.Drawable, int, int, int, int, int, int)`

### setLineAttributes

    public void setLineAttributes(int lineWidth,
                                  LineStyle lineStyle,
                                  CapStyle capStyle,
                                  JoinStyle joinStyle)

  Sets various attributes of how lines are drawn. See the corresponding members of GdkGCValues for full explanations of the arguments.

  Parameters:
    `lineWidth` - the width of lines.
    `lineStyle` - the dash-style for lines.
    `capStyle` - the manner in which the ends of lines are drawn.
    `joinStyle` - the manner in which lines are joined together.

### setDashes

    public void setDashes(int dashOffset,
                          int[] dashList)

  Sets the way dashed-lines are drawn. Lines will be drawn with alternating on and off segments of the lengths specified in dash_list. The manner in which the on and off segments are drawn is determined by the line style.

  Parameters:
    `dashOffset` - the phase of the pattern for the dashed line-style you want to see
    `dashList` - the dash-list for the dashed line-style you want to set.
  See Also:
    `setLineAttributes(int, org.gnu.gdk.LineStyle, org.gnu.gdk.CapStyle, org.gnu.gdk.JoinStyle)`

### offset

    public void offset(int xOffset,
                       int yOffset)

  Offset attributes such as the clip and tile-stipple origins of the GC so that drawing at X - x_offset, y - y_offset with the offset GC has the same effect as drawing at x, y with the original GC.

  Parameters:
    `xOffset` - amount by which to offset the GC in the X direction
    `yOffset` - amount by which to offset the GC in the Y direction

### copy

    public void copy(GC source)

  Copy the set of values (settings) from another graphics context.

  Parameters:
    `source` - the source graphics context.

### setColormap

    public void setColormap(Colormap colormap)

  Sets the colormap to the given colormap. The depth of the colormap's visual must match the depth of the drawable for which the GC was created.

### getColormap

    public Colormap getColormap()

  Gets the colormap, if it exists. A GC will have a colormap if the drawable for which it was created has a colormap, or if a colormap was set explicitely with setColormap().

### getScreen

    public Screen getScreen()

### getClipXOrigin

    protected static final int getClipXOrigin(Handle obj)

### getClipYOrigin

    protected static final int getClipYOrigin(Handle obj)

### getTsXOrigin

    protected static final int getTsXOrigin(Handle obj)

### getTsYOrigin

    protected static final int getTsYOrigin(Handle obj)

### gdk_gc_get_type

    protected static final int gdk_gc_get_type()

### gdk_gc_new

    protected static final Handle gdk_gc_new(Handle drawable)

### gdk_gc_get_screen

    protected static final Handle gdk_gc_get_screen(Handle gc)

### gdk_gc_set_foreground

    protected static final void gdk_gc_set_foreground(Handle gc,
                                                      Handle color)

### gdk_gc_set_background

    protected static final void gdk_gc_set_background(Handle gc,
                                                      Handle color)

### gdk_gc_set_rgb_fg_color

    protected static final void gdk_gc_set_rgb_fg_color(Handle gc,
                                                        Handle color)

### gdk_gc_set_rgb_bg_color

    protected static final void gdk_gc_set_rgb_bg_color(Handle gc,
                                                        Handle color)

### gdk_gc_set_function

    protected static final void gdk_gc_set_function(Handle gc,
                                                    int function)

### gdk_gc_set_fill

    protected static final void gdk_gc_set_fill(Handle gc,
                                                int fill)

### gdk_gc_set_tile

    protected static final void gdk_gc_set_tile(Handle gc,
                                                Handle tile)

### gdk_gc_set_stipple

    protected static final void gdk_gc_set_stipple(Handle gc,
                                                   Handle stipple)

### gdk_gc_set_ts_origin

    protected static final void gdk_gc_set_ts_origin(Handle gc,
                                                     int x,
                                                     int y)

### gdk_gc_set_clip_origin

    protected static final void gdk_gc_set_clip_origin(Handle gc,
                                                       int x,
                                                       int y)

### gdk_gc_set_clip_mask

    protected static final void gdk_gc_set_clip_mask(Handle gc,
                                                     Handle mask)

### gdk_gc_set_clip_rectangle

    protected static final void gdk_gc_set_clip_rectangle(Handle gc,
                                                          Handle rectangle)

### gdk_gc_set_clip_region

    protected static final void gdk_gc_set_clip_region(Handle gc,
                                                       Handle region)

### gdk_gc_set_subwindow

    protected static final void gdk_gc_set_subwindow(Handle gc,
                                                     int mode)

### gdk_gc_set_exposures

    protected static final void gdk_gc_set_exposures(Handle gc,
                                                     boolean exposures)

### gdk_gc_set_line_attributes

    protected static final void gdk_gc_set_line_attributes(Handle gc,
                                                           int lineWidth,
                                                           int lineStyle,
                                                           int capStyle,
                                                           int joinStyle)

### gdk_gc_set_dashes

    protected static final void gdk_gc_set_dashes(Handle gc,
                                                  int dashOffset,
                                                  int[] dashList,
                                                  int n)

### gdk_gc_copy

    protected static final void gdk_gc_copy(Handle dstGC,
                                            Handle srcGC)

### gdk_gc_set_colormap

    protected static final void gdk_gc_set_colormap(Handle gc,
                                                    Handle colormap)

### gdk_gc_get_colormap

    protected static final Handle gdk_gc_get_colormap(Handle gc)

### gdk_gc_offset

    protected static final void gdk_gc_offset(Handle gc,
                                              int xOffset,
                                              int yOffset)