UDIG Developer Guide : NavCommand Example
This page last changed on Apr 13, 2005 by jgarnett.
PanCommand.java /** * A command that pans the viewport. The command can be defined in terms of pixels on the screen or * in terms of world units. * * @author jeichar * @since 0.3 */ public class PanCommand extends AbstractNavCommand implements NavCommand { double worldx, worldy; int pixelx, pixely; boolean inPixel; /** * Creates a new instance of PanCommand * * @param pixelx The amount to pan in the x direction * @param pixely The amount to pan in the y direction */ public PanCommand(int pixelx, int pixely) { this.pixelx = pixelx; this.pixely = pixely; inPixel = true; } /** * Creates a new instance of PanCommand * * @param worldx The amount to pan in the x direction * @param worldy The amount to pan in the y direction */ public PanCommand(double worldx, double worldy) { this.worldx = worldx; this.worldy = worldy; inPixel = false; } /** * @see net.refractions.udig.project.internal.command.navigation.AbstractNavCommand#runImpl() */ protected void runImpl() throws Exception { if (inPixel) model.panUsingScreenCoords(pixelx, pixely); else model.panUsingWorldCoords(worldx, worldy); } /** * @see net.refractions.udig.project.internal.command.Command#copy() */ public Command copy() { if (inPixel) return new PanCommand(pixelx, pixely); return new PanCommand(worldx, worldy); } /** * @see net.refractions.udig.project.command.Command#getName() */ public String getName() { return Policy.bind("PanCommand.pan"); //$NON-NLS-1$ } } |
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Document generated by Confluence on Nov 19, 2005 20:03 |