org.xwt
Class Surface.DoubleBufferedSurface

java.lang.Object
  org.xwt.PixelBuffer
      org.xwt.Surface
          org.xwt.Surface.DoubleBufferedSurface

Direct Known Subclasses:

AWT.AWTSurface, Win32.Win32Surface, X11.X11Surface

Enclosing class:

Surface

public abstract static class Surface.DoubleBufferedSurface

extends Surface

Nested Class Summary

Nested classes inherited from class org.xwt.Surface

Surface.DoubleBufferedSurface, Surface.SimpleMessage

Field Summary

Fields inherited from class org.xwt.Surface

allSurfaces, alt, button1, button2, button3, control, cursor, maximized, minimized, mousex, mousey, root, shift

Constructor Summary

Surface.DoubleBufferedSurface(Box root)

Method Summary

abstract void	blit(PixelBuffer source, int sx, int sy, int dx, int dy, int dx2, int dy2) copies a region from the doublebuffer to this surface
void	Dirty(int x, int y, int w, int h) This is how subclasses signal a 'shallow dirty', indicating that although the backbuffer is valid, the screen is not
void	drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) draw the picture at (dx1, dy1), cropping to (cx1, cy1, cx2, cy2)
void	drawPictureAlphaOnly(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int argb) Same as drawPicture, but only uses the alpha channel of the Picture, and is allowed to destructively modify the RGB channels of the Picture in the process.
void	fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color) fill a trapezoid whose top and bottom edges are horizontal
void	render_()
void	render() runs the prerender() and render() pipelines in the root Box to regenerate the backbuffer, then blits it to the screen

Methods inherited from class org.xwt.Surface

_dispose, _setMaximized, _setMinimized, _setSize, Click, Close, dirty, dispose, DoubleClick, Focused, getHeight, getWidth, KeyPressed, KeyReleased, Maximized, Minimized, Move, PosChange, Press, Refresh, Release, setIcon, setInvisible, setLimits, setLocation, setMaximized, setMinimized, setSize, setTitleBarText, SizeChange, syncCursor, toBack, toFront

Methods inherited from class org.xwt.PixelBuffer

drawLine

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Surface.DoubleBufferedSurface

public Surface.DoubleBufferedSurface(Box root)

Method Detail

drawPicture

public void drawPicture(Picture source,
                        int dx,
                        int dy,
                        int cx1,
                        int cy1,
                        int cx2,
                        int cy2)

Description copied from class: PixelBuffer

draw the picture at (dx1, dy1), cropping to (cx1, cy1, cx2, cy2)

Specified by:

drawPicture in class PixelBuffer

drawPictureAlphaOnly

public void drawPictureAlphaOnly(Picture source,
                                 int dx,
                                 int dy,
                                 int cx1,
                                 int cy1,
                                 int cx2,
                                 int cy2,
                                 int argb)

Description copied from class: PixelBuffer

Same as drawPicture, but only uses the alpha channel of the Picture, and is allowed to destructively modify the RGB channels of the Picture in the process. This method may assume that the RGB channels of the image are all zero IFF it restores this invariant before returning.

Specified by:

drawPictureAlphaOnly in class PixelBuffer

fillTrapezoid

public void fillTrapezoid(int x1,
                          int x2,
                          int y1,
                          int x3,
                          int x4,
                          int y2,
                          int color)

Description copied from class: PixelBuffer

fill a trapezoid whose top and bottom edges are horizontal

Specified by:

fillTrapezoid in class PixelBuffer

render

public void render()

Description copied from class: Surface

runs the prerender() and render() pipelines in the root Box to regenerate the backbuffer, then blits it to the screen

Overrides:

render in class Surface

render_

public void render_()

Dirty

public final void Dirty(int x,
                        int y,
                        int w,
                        int h)

This is how subclasses signal a 'shallow dirty', indicating that although the backbuffer is valid, the screen is not

blit

public abstract void blit(PixelBuffer source,
                          int sx,
                          int sy,
                          int dx,
                          int dy,
                          int dx2,
                          int dy2)

copies a region from the doublebuffer to this surface