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package ij.plugin;
import ij.*;
import ij.gui.*;
import ij.process.*;
import ij.measure.*;
import java.awt.*;
/** This plugin implements the commands in the Image/Zoom submenu. */
public class Zoom implements PlugIn{
public void run(String arg) {
ImagePlus imp = WindowManager.getCurrentImage();
if (imp==null)
{IJ.noImage(); return;}
ImageCanvas ic = imp.getCanvas();
if (ic==null) return;
if (ic instanceof PlotCanvas && !((PlotCanvas)ic).isFrozen()) {
((PlotCanvas)ic).zoom(arg);
return;
}
Point loc = ic.getCursorLoc();
if (!ic.cursorOverImage()) {
Rectangle srcRect = ic.getSrcRect();
loc.x = srcRect.x + srcRect.width/2;
loc.y = srcRect.y + srcRect.height/2;
}
int x = ic.screenX(loc.x);
int y = ic.screenY(loc.y);
if (arg.equals("in")) {
ic.zoomIn(x, y);
if (ic.getMagnification()<=1.0) imp.repaintWindow();
} else if (arg.equals("out")) {
ic.zoomOut(x, y);
if (ic.getMagnification()<1.0) imp.repaintWindow();
} else if (arg.equals("orig"))
ic.unzoom();
else if (arg.equals("100%"))
ic.zoom100Percent();
else if (arg.equals("to"))
zoomToSelection(imp, ic);
else if (arg.equals("set"))
setZoom(imp, ic);
else if (arg.equals("max")) {
ImageWindow win = imp.getWindow();
if (win!=null) {
win.maximize();
IJ.wait(100);
}
} else if (arg.equals("scale"))
scaleToFit(imp);
}
void zoomToSelection(ImagePlus imp, ImageCanvas ic) {
Roi roi = imp.getRoi();
ic.unzoom();
if (roi==null) return;
Rectangle w = imp.getWindow().getBounds();
Rectangle r = roi.getBounds();
double mag = ic.getMagnification();
int marginw = (int)((w.width - mag * imp.getWidth()));
int marginh = (int)((w.height - mag * imp.getHeight()));
int x = r.x+r.width/2;
int y = r.y+r.height/2;
mag = ic.getHigherZoomLevel(mag);
while(r.width*mag<w.width - marginw && r.height*mag<w.height - marginh) {
ic.zoomIn(ic.screenX(x), ic.screenY(y));
double cmag = ic.getMagnification();
if (cmag==32.0) break;
mag = ic.getHigherZoomLevel(cmag);
w = imp.getWindow().getBounds();
}
}
/** Based on Albert Cardona's ZoomExact plugin:
http://albert.rierol.net/software.html */
void setZoom(ImagePlus imp, ImageCanvas ic) {
int width = imp.getWidth();
int height = imp.getHeight();
int x = width/2;
int y = height/2;
Rectangle srcRect = ic.getSrcRect();
Roi roi = imp.getRoi();
boolean areaSelection = false;
if (roi!=null) {
Rectangle bounds = roi.getBounds();
x = bounds.x + bounds.width/2;
y = bounds.y + bounds.height/2;
areaSelection = roi.isArea();
if (areaSelection)
srcRect = bounds;
}
ImageWindow win = imp.getWindow();
GenericDialog gd = new GenericDialog("Set Zoom");
gd.addNumericField("Zoom:", ic.getMagnification() * 200, 0, 4, "%");
gd.addNumericField("X center:", x, 0, 5, "");
gd.addNumericField("Y center:", y, 0, 5, "");
if (areaSelection) {
gd.addNumericField("Width:", srcRect.width, 0, 5, "");
gd.addNumericField("Height:", srcRect.height, 0, 5, "");
}
gd.showDialog();
if (gd.wasCanceled()) return;
double mag = gd.getNextNumber()/100.0;
x = (int)gd.getNextNumber();
y = (int)gd.getNextNumber();
int srcWidth = srcRect.width;
int srcHeight = srcRect.height;
if (areaSelection) {
srcWidth = (int)gd.getNextNumber();
srcHeight = (int)gd.getNextNumber();
}
if (x<0) x=0;
if (y<0) y=0;
String options = IJ.macroRunning()?Macro.getOptions():null;
boolean legacyMacro = areaSelection && options!=null && options.contains("x=") && !options.contains("width=");
Rectangle bounds = GUI.getMaxWindowBounds();
boolean smallImage = mag>1.0 && width*mag<bounds.width && height*mag<bounds.height;
if ((areaSelection||smallImage||srcWidth!=srcRect.width||srcHeight!=srcRect.height) && !legacyMacro) {
if (areaSelection && roi.getType()==Roi.RECTANGLE)
imp.deleteRoi();
Insets insets = win.getInsets();
int canvasWidth = (int)(srcWidth*mag+insets.right+insets.left+ImageWindow.HGAP*2);
int canvasHeight = (int)(srcHeight*mag+insets.top+insets.bottom+ImageWindow.VGAP*2+win.getSliderHeight());
ic.setSourceRect(new Rectangle(x-srcWidth/2,y-srcHeight/2,srcWidth,srcHeight));
ic.setMagnification(mag);
win.setSize(canvasWidth, canvasHeight);
return;
}
if (x>=width) x=width-1;
if (y>=height) y=height-1;
if (mag<=0.0) mag = 1.0;
ic.setMagnification(mag);
double newWidth = width*mag;
double newHeight = height*mag;
Dimension size = ic.getSize();
if (newWidth>=size.width && newHeight>=size.height) {
srcWidth = (int)Math.round(size.width/mag);
srcHeight = (int)Math.round(size.height/mag);
if ((int)(srcWidth*mag)<size.width)
srcWidth++;
if ((int)(srcHeight*mag)<size.height)
srcHeight++;
x = x-srcWidth/2;
y = y-srcHeight/2;
if (x+srcWidth>width)
x = width - srcWidth;
if (y+srcHeight>height)
y = height - srcHeight;
if (x<0) x=0;
if (y<0) y=0;
ic.setSourceRect(new Rectangle(x, y, srcWidth, srcHeight));
} else {
srcWidth = width;
srcHeight = height;
ic.setSize((int)newWidth, (int)newHeight);
ic.setSourceRect(new Rectangle(0, 0, srcWidth, srcHeight));
win.pack();
}
ic.repaint();
}
private void scaleToFit(ImagePlus imp) {
ImageCanvas ic = imp.getCanvas();
if (ic==null)
return;
if (ic.getScaleToFit()) {
ic.setScaleToFit(false);
ic.unzoom();
IJ.showStatus("Exiting scale to fit mode (resize with 'alt' key to scale to fit)");
} else {
ic.setScaleToFit(true);
ic.fitToWindow();
IJ.showStatus("Resize window to scale (use 'alt' key as shortcut)");
}
}
}
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