Provides support for drawing points, lines, arcs, and text onto
what we call 'drawables'. Drawables, as the name suggests, are
things which support drawing onto them and are either
org.gnu.gdk.Window or org.gnu.gdk.Pixmap objects.
drawArc
public void drawArc(boolean filled,
int x,
int y,
int width,
int height,
int angle1,
int angle2)
Draws an arc or a filled 'pie slice'. The arc is defined by the
bounding rectangle of the entire elipse, and the start and end
angles of the part of the elipse to be drawn.
filled
- x
- y
- width
- height
- angle1
- angle2
-
drawArc
public void drawArc(GC gc,
boolean filled,
int x,
int y,
int width,
int height,
int angle1,
int angle2)
Draws an arc or a filled 'pie slice'. The arc is defined by the
bounding rectangle of the entire elipse, and the start and end
angles of the part of the elipse to be drawn.
gc
- filled
- x
- y
- width
- height
- angle1
- angle2
-
drawDrawable
public void drawDrawable(Drawable src,
int xsrc,
int ysrc,
int xdest,
int ydest,
int width,
int height)
Convience method that copies the width x height region of
the Drawable at coordinates (xsrc,ysrc) to coordinates
(xdest,ydest) using the default GC.
src
- xsrc
- ysrc
- xdest
- ydest
- width
- height
-
drawDrawable
public void drawDrawable(GC gc,
Drawable src,
int xsrc,
int ysrc,
int xdest,
int ydest,
int width,
int height)
Copies the width x height region of the Drawable at coordinates
(xsrc,ysrc) to coordinates (xdest,ydest).
gc
- src
- xsrc
- ysrc
- xdest
- ydest
- width
- height
-
drawGlyphs
public void drawGlyphs(GC gc,
Font font,
int x,
int y,
GlyphString glyphs)
This is a low-level function. Normally, 99 percent of text rendering should
be down using drawLayout() instead.
A glyph is a single image in a font. This method draws a
sequence of glyphs.
gc
- font
- x
- y
- glyphs
-
drawGlyphs
public void drawGlyphs(Font font,
int x,
int y,
GlyphString glyphs)
This is a low-level function. Normally, 99 percent of text rendering should
be down using drawLayout() instead.
A glyph is a single image in a font. This method draws a
sequence of glyphs.
font
- x
- y
- glyphs
-
drawGrayImage
public void drawGrayImage(int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride)
drawGrayImage
public void drawGrayImage(GC gc,
int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride)
drawImage
public void drawImage(GC gc,
Image image,
int xsrc,
int ysrc,
int xdest,
int ydest,
int width,
int height)
Draw an Image onto this Drawable. The depth of the Image must
match the depth of this Drawable.
gc
- image
- xsrc
- ysrc
- xdest
- ydest
- width
- height
-
drawImage
public void drawImage(Image image,
int xsrc,
int ysrc,
int xdest,
int ydest,
int width,
int height)
Draw an Image onto this Drawable using the default GC.
The depth of the Image must match the depth of this Drawable.
image
- xsrc
- ysrc
- xdest
- ydest
- width
- height
-
drawIndexedImage
public void drawIndexedImage(int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride,
RgbCmap cmap)
drawIndexedImage
public void drawIndexedImage(GC gc,
int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride,
RgbCmap cmap)
drawLayout
public void drawLayout(int x,
int y,
Layout layout)
Render a Layout onto this Drawable using the default GC.
x
- y
- layout
-
drawLayout
public void drawLayout(GC gc,
int x,
int y,
Layout layout)
Render a Layout onto this Drawable.
gc
- x
- y
- layout
-
drawLayoutLine
public void drawLayoutLine(int x,
int y,
LayoutLine line)
Render a LayoutLine onto this Drawable using the default GC.
x
- y
- line
-
drawLayoutLine
public void drawLayoutLine(GC gc,
int x,
int y,
LayoutLine line)
Render a LayoutLine onto this Drawable.
gc
- x
- y
- line
-
drawLayoutLineWithColors
public void drawLayoutLineWithColors(int x,
int y,
LayoutLine line,
Color foreground,
Color background)
Render a LayoutLne onto this Drawable overriding the layout's normal
colors with the provided forground and background and using the default
GC.
x
- y
- line
- foreground
- background
-
drawLayoutLineWithColors
public void drawLayoutLineWithColors(GC gc,
int x,
int y,
LayoutLine line,
Color foreground,
Color background)
Render a LayoutLne onto this Drawable overriding the layout's normal
colors with the provided forground and background.
gc
- x
- y
- line
- foreground
- background
-
drawLayoutWithColors
public void drawLayoutWithColors(int x,
int y,
Layout layout,
Color foreground,
Color background)
Render a Layout onto this Drawable overriding the layout's normal
colors with the provided forground and background using the
default GC.
x
- y
- layout
- foreground
- background
-
drawLayoutWithColors
public void drawLayoutWithColors(GC gc,
int x,
int y,
Layout layout,
Color foreground,
Color background)
Render a Layout onto this Drawable overriding the layout's normal
colors with the provided forground and background.
gc
- x
- y
- layout
- foreground
- background
-
drawLine
public void drawLine(int x1,
int y1,
int x2,
int y2)
Draw a line using the foreground color and other attributes
of the default GC.
x1
- y1
- x2
- y2
-
drawLine
public void drawLine(GC gc,
int x1,
int y1,
int x2,
int y2)
Draw a line using the foreground color and other attributes
of the GC.
gc
- x1
- y1
- x2
- y2
-
drawLines
public void drawLines(GC gc,
Point points)
Draw a series of lines connecting the given points. The
way in which joins between lines are drawn is determined
by the CapStyle value in GC.
gc
- points
-
drawLines
public void drawLines(Point points)
Draw a series of lines connecting the given points. The
way in which joins between lines are drawn is determined
by the CapStyle value in the default GC.
points
-
drawPixbuf
public void drawPixbuf(GC gc,
Pixbuf pixbuf,
int srcx,
int srcy,
int destx,
int desty,
int width,
int height,
RgbDither dither,
int xdither,
int ydither)
Render a rectangular portion of a Pixbuf to this Drawable.
gc
- pixbuf
- srcx
- srcy
- destx
- desty
- width
- height
- dither
- xdither
- ydither
-
drawPixbuf
public void drawPixbuf(Pixbuf pixbuf,
int srcx,
int srcy,
int destx,
int desty,
int width,
int height,
RgbDither dither,
int xdither,
int ydither)
Render a rectangular portion of a Pixbuf to this Drawable.
pixbuf
- srcx
- srcy
- destx
- desty
- width
- height
- dither
- xdither
- ydither
-
drawPoint
public void drawPoint(int x,
int y)
Draw a point using the foreground color and other attributes
of the default GC.
x
- y
-
drawPoint
public void drawPoint(GC gc,
int x,
int y)
Draw a point using the foreground color and other attributes
of the GC.
gc
- x
- y
-
drawPoints
public void drawPoints(GC gc,
Point points)
Draw a number of points using the forground color and other
attributes of the GC.
gc
- points
-
drawPoints
public void drawPoints(Point points)
Draw a number of points using the forground color and other
attributes of the default GC.
points
-
drawPolygon
public void drawPolygon(boolean filled,
Point points)
Convience method that draws an outlined or filled polygon
using the default GC.
filled
- points
-
drawPolygon
public void drawPolygon(GC gc,
boolean filled,
Point points)
Draws an outlined or filled polygon.
gc
- filled
- points
-
drawRGB32Image
public void drawRGB32Image(int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride)
drawRGB32Image
public void drawRGB32Image(GC gc,
int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride)
drawRGB32ImageDitherAlign
public void drawRGB32ImageDitherAlign(int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride,
int xdith,
int ydith)
drawRGB32ImageDitherAlign
public void drawRGB32ImageDitherAlign(GC gc,
int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride,
int xdith,
int ydith)
drawRGBImage
public void drawRGBImage(int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride)
drawRGBImage
public void drawRGBImage(GC gc,
int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride)
drawRGBImageDitherAlign
public void drawRGBImageDitherAlign(int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride,
int xdith,
int ydith)
drawRGBImageDitherAlign
public void drawRGBImageDitherAlign(GC gc,
int x,
int y,
int width,
int height,
RgbDither dither,
byte[] buffer,
int rowStride,
int xdith,
int ydith)
drawRectangle
public void drawRectangle(boolean filled,
int x,
int y,
int width,
int height)
Draws a rectangle outlined or filled using the forground color
and other attributes of the default GC.
filled
- x
- y
- width
- height
-
drawRectangle
public void drawRectangle(GC gc,
boolean filled,
int x,
int y,
int width,
int height)
Draws a rectangle outlined or filled using the forground color
and other attributes of the GC.
gc
- filled
- x
- y
- width
- height
-
drawSegments
public void drawSegments(GC gc,
Segment segments)
Draw a number of unconnected lines.
gc
- segments
-
drawSegments
public void drawSegments(Segment segments)
Draw a number of unconnected lines using the default
GC.
segments
-
getClipRegion
public Region getClipRegion()
Computes the Region of a Drawable that potentially can be written to
by drawing primitives. This Region will not take into account the
clip region for the GC, and may also not take into account other factors
such as if the Window is obscured by other Windows.
getColormap
public Colormap getColormap()
Gets the Colormap for the Drawable if one is set; returns null
otherwise.
getDepth
public int getDepth()
Obtains the bit depth of the Drawable, this is, the number
of bits that make up a pixel.
getDisplay
public Display getDisplay()
Get the Display associated with the Drawable.
getHeight
public int getHeight()
Return the height of the Drawable.
getImage
public Image getImage(int x,
int y,
int width,
int height)
Obtains the pixels from a server-side Drawable as a client-side Image.
The format of the Image depends on the Visual for the current display
which makes manipulating Image extremely difficult.
x
- y
- width
- height
-
getScreen
public Screen getScreen()
Get the Screen associated with the Drawable.
getSize
public Dimension getSize()
use getWidth and getHeight instead.
Returns the size of the Drawable.
getType
public static Type getType()
Retrieve the runtime type used by the GLib library.
getVisibleRegion
public Region getVisibleRegion()
Computes the Region of a Drawable that is potentially visible.
getVisual
public Visual getVisual()
Gets the Visual describing the pixel format of this Drawable.
getWidth
public int getWidth()
Return the width of the Drawable
setColormap
public void setColormap(Colormap cmap)
Sets the Colormap associated with the Drawable. Normally this happens
automatically when the Drawable is created.
cmap
-