/*******************************************************************************
* Copyright (c) 2000, 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.examples.imageanalyzer;
import java.io.InputStream;
import java.net.URL;
import java.text.MessageFormat;
import java.util.ResourceBundle;
import java.util.Vector;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTError;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.ControlAdapter;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.events.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.ImageLoader;
import org.eclipse.swt.graphics.ImageLoaderEvent;
import org.eclipse.swt.graphics.ImageLoaderListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.printing.PrintDialog;
import org.eclipse.swt.printing.Printer;
import org.eclipse.swt.printing.PrinterData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Dialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Sash;
import org.eclipse.swt.widgets.ScrollBar;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class ImageAnalyzer {
class TextPrompter extends Dialog {
Shell dialog;
String message = "";
String result = null;
Text text;
public TextPrompter(Shell parent) {
this(parent, SWT.APPLICATION_MODAL);
}
public TextPrompter(Shell parent, int style) {
super(parent, style);
}
public String getMessage() {
return message;
}
public String open() {
dialog = new Shell(getParent(), getStyle());
dialog.setText(getText());
dialog.setLayout(new GridLayout());
Label label = new Label(dialog, SWT.NONE);
label.setText(message);
label.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
text = new Text(dialog, SWT.SINGLE | SWT.BORDER);
GridData data = new GridData(GridData.FILL_HORIZONTAL);
data.widthHint = 300;
text.setLayoutData(data);
Composite buttons = new Composite(dialog, SWT.NONE);
GridLayout grid = new GridLayout();
grid.numColumns = 2;
buttons.setLayout(grid);
buttons.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_END));
Button ok = new Button(buttons, SWT.PUSH);
ok.setText(ImageAnalyzer.bundle.getString("OK"));
data = new GridData();
data.widthHint = 75;
ok.setLayoutData(data);
ok.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
result = text.getText();
dialog.dispose();
}
});
Button cancel = new Button(buttons, SWT.PUSH);
cancel.setText(ImageAnalyzer.bundle.getString("Cancel"));
data = new GridData();
data.widthHint = 75;
cancel.setLayoutData(data);
cancel.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
dialog.dispose();
}
});
dialog.setDefaultButton(ok);
dialog.pack();
dialog.open();
while (!dialog.isDisposed())
if (!display.readAndDispatch())
display.sleep();
return result;
}
public void setMessage(String string) {
message = string;
}
}
static final int ALPHA_CHARS = 5;
static final int ALPHA_CONSTANT = 0;
static final int ALPHA_X = 1;
static final int ALPHA_Y = 2;
static ResourceBundle bundle = ResourceBundle.getBundle("examples_images");
static final int INDEX_DIGITS = 4;
static final String[] OPEN_FILTER_EXTENSIONS = new String[] {
"*.bmp; *.gif; *.ico; *.jfif; *.jpeg; *.jpg; *.png; *.tif; *.tiff", "*.bmp", "*.gif", "*.ico",
"*.jpg; *.jpeg; *.jfif", "*.png", "*.tif; *.tiff" };
static final String[] OPEN_FILTER_NAMES = new String[] {
ImageAnalyzer.bundle.getString("All_images") + " (bmp, gif, ico, jfif, jpeg, jpg, png, tif, tiff)",
"BMP (*.bmp)", "GIF (*.gif)", "ICO (*.ico)", "JPEG (*.jpg, *.jpeg, *.jfif)", "PNG (*.png)",
"TIFF (*.tif, *.tiff)" };
static final String[] SAVE_FILTER_EXTENSIONS = new String[] { "*.bmp", "*.gif", "*.ico", "*.jpg", "*.png",
"*.tif" };
static final String[] SAVE_FILTER_NAMES = new String[] { "BMP (*.bmp)", "GIF (*.gif)", "ICO (*.ico)",
"JPEG (*.jpg)", "PNG (*.png)", "TIFF (*.tif)" };
public static void main(String[] args) {
Display display = new Display();
ImageAnalyzer imageAnalyzer = new ImageAnalyzer();
Shell shell = imageAnalyzer.open(display);
while (!shell.isDisposed())
if (!display.readAndDispatch())
display.sleep();
display.dispose();
}
static String createMsg(String msg, Object arg) {
MessageFormat formatter = new MessageFormat(msg);
return formatter.format(new Object[] { arg });
}
static String createMsg(String msg, Object[] args) {
MessageFormat formatter = new MessageFormat(msg);
return formatter.format(args);
}
/*
* Return a String describing how to analyze the bytes in the hex dump.
*/
static String depthInfo(int depth) {
Object[] args = { Integer.valueOf(depth), "" };
switch (depth) {
case 1:
args[1] = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Multi_pixels"), new Object[] {
Integer.valueOf(8), " [01234567]" });
break;
case 2:
args[1] = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Multi_pixels"), new Object[] {
Integer.valueOf(4), "[00112233]" });
break;
case 4:
args[1] = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Multi_pixels"), new Object[] {
Integer.valueOf(2), "[00001111]" });
break;
case 8:
args[1] = ImageAnalyzer.bundle.getString("One_byte");
break;
case 16:
args[1] = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Multi_bytes"), Integer.valueOf(2));
break;
case 24:
args[1] = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Multi_bytes"), Integer.valueOf(3));
break;
case 32:
args[1] = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Multi_bytes"), Integer.valueOf(4));
break;
default:
args[1] = ImageAnalyzer.bundle.getString("Unsupported_lc");
}
return ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Depth_info"), args);
}
/*
* Return a String describing the specified disposal method.
*/
static String disposalString(int disposalMethod) {
switch (disposalMethod) {
case SWT.DM_FILL_NONE:
return ImageAnalyzer.bundle.getString("None_lc");
case SWT.DM_FILL_BACKGROUND:
return ImageAnalyzer.bundle.getString("Background_lc");
case SWT.DM_FILL_PREVIOUS:
return ImageAnalyzer.bundle.getString("Previous_lc");
}
return ImageAnalyzer.bundle.getString("Unspecified_lc");
}
/*
* Return a String describing the specified transparent or background pixel.
*/
static String pixelInfo(int pixel) {
if (pixel == -1)
return pixel + " (" + ImageAnalyzer.bundle.getString("None_lc") + ")";
return pixel + " (0x" + Integer.toHexString(pixel) + ")";
}
/*
* Return the specified 4-byte value as a hex string, preserving leading 0's. (a bit 'brute force'... should
* probably use a loop...)
*/
static String toHex4ByteString(int i) {
String hex = Integer.toHexString(i);
if (hex.length() == 1)
return "0000000" + hex;
if (hex.length() == 2)
return "000000" + hex;
if (hex.length() == 3)
return "00000" + hex;
if (hex.length() == 4)
return "0000" + hex;
if (hex.length() == 5)
return "000" + hex;
if (hex.length() == 6)
return "00" + hex;
if (hex.length() == 7)
return "0" + hex;
return hex;
}
/*
* Return the specified byte value as a hex string, preserving leading 0's.
*/
static String toHexByteString(int i) {
if (i <= 0x0f)
return "0" + Integer.toHexString(i);
return Integer.toHexString(i & 0xff);
}
/*
* Return the specified number of milliseconds. If the specified number of milliseconds is too small to see a visual
* change, then return a higher number.
*/
static int visibleDelay(int ms) {
if (ms < 20)
return ms + 30;
if (ms < 30)
return ms + 10;
return ms;
}
// to
// scale
// the
// image
int alpha = 255; // used
// to
// display
// the
// background
// of
// an
// animated
// image
boolean animate = false; // used
// to
// animate
// a
// multi-image
// file
Thread animateThread; // draws
Combo backgroundCombo, scaleXCombo, scaleYCombo, alphaCombo;
Cursor crossCursor;
// to
// seed
// the
// file
// dialog
String currentName; // the
StyledText dataText;
Display display;
// current
// image
// file
// or
// URL
// name
String fileName; // the
Font fixedWidthFont;
// currently-displayed
// image
// data
Image image; // the
Canvas imageCanvas, paletteCanvas;
GC imageCanvasGC;
// index
// of
// the
// current
// image
// data
ImageData imageData; // the
// loader
// for
// the
// current
// image
// file
ImageData[] imageDataArray; // all
// image
// data
// read
// from
// the
// current
// file
int imageDataIndex; // the
// to
// modify
// the
// alpha
// value
// of
// the
// image
boolean incremental = false; // used
Button incrementalCheck, transparentCheck, maskCheck, backgroundCheck;
// currently-displayed
// image
Vector incrementalEvents; // incremental
// animated
// images
Thread incrementalThread; // draws
// and
// used
// as a
// width
// hint
int ix = 0, iy = 0, py = 0; // used
// incremental
// images
String lastPath; // used
// current
// image
// file
ImageLoader loader; // the
// image
// events
long loadTime = 0; // the
// time
// it
// took
// to
// load
// the
// current
// image
int paletteWidth = 140; // recalculated
Button previousButton, nextButton, animateButton;
Sash sash;
Shell shell;
// to
// display
// an
// icon
// mask
// or
// transparent
// image
// mask
boolean showBackground = false; // used
// to
// display
// an
// image
// with
// transparency
boolean showMask = false; // used
// to
// incrementally
// display
// an
// image
boolean transparent = true; // used
Label typeLabel, sizeLabel, depthLabel, transparentPixelLabel, timeToLoadLabel, screenSizeLabel,
backgroundPixelLabel, locationLabel, disposalMethodLabel, delayTimeLabel, repeatCountLabel, paletteLabel,
dataLabel, statusLabel;
Color whiteColor, blackColor, redColor, greenColor, blueColor, canvasBackground;
// to
// scroll
// the
// image
// and
// palette
float xscale = 1, yscale = 1; // used
public Shell open(Display dpy) {
// Create a window and set its title.
display = dpy;
shell = new Shell(display);
shell.setText(ImageAnalyzer.bundle.getString("Image_analyzer"));
// Hook resize and dispose listeners.
shell.addControlListener(new ControlAdapter() {
public void controlResized(ControlEvent event) {
resizeShell(event);
}
});
shell.addShellListener(new ShellAdapter() {
public void shellClosed(ShellEvent e) {
animate = false; // stop any animation in progress
if (animateThread != null)
// wait for the thread to die before disposing the shell.
while (animateThread.isAlive())
if (!display.readAndDispatch())
display.sleep();
e.doit = true;
}
});
shell.addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
// Clean up.
if (image != null)
image.dispose();
whiteColor.dispose();
blackColor.dispose();
redColor.dispose();
greenColor.dispose();
blueColor.dispose();
fixedWidthFont.dispose();
crossCursor.dispose();
}
});
// Create colors and fonts.
whiteColor = new Color(display, 255, 255, 255);
blackColor = new Color(display, 0, 0, 0);
redColor = new Color(display, 255, 0, 0);
greenColor = new Color(display, 0, 255, 0);
blueColor = new Color(display, 0, 0, 255);
fixedWidthFont = new Font(display, "courier", 10, 0);
crossCursor = new Cursor(display, SWT.CURSOR_CROSS);
// Add a menu bar and widgets.
createMenuBar();
createWidgets();
shell.pack();
// Create a GC for drawing, and hook the listener to dispose it.
imageCanvasGC = new GC(imageCanvas);
imageCanvas.addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
imageCanvasGC.dispose();
}
});
// Open the window
shell.open();
return shell;
}
/*
* Called when the Alpha combo selection changes.
*/
void alpha() {
try {
alpha = Integer.parseInt(alphaCombo.getText());
} catch (NumberFormatException e) {
alphaCombo.select(alphaCombo.indexOf("255"));
alpha = 255;
}
}
/*
* Called when the Animate button is pressed.
*/
void animate() {
animate = !animate;
if (animate && image != null && imageDataArray.length > 1) {
animateThread = new Thread(ImageAnalyzer.bundle.getString("Animation")) {
public void run() {
// Pre-animation widget setup.
preAnimation();
// Animate.
try {
animateLoop();
} catch (final SWTException e) {
display.syncExec(new Runnable() {
public void run() {
showErrorDialog(ImageAnalyzer.createMsg(ImageAnalyzer.bundle
.getString("Creating_image"), Integer.valueOf(imageDataIndex + 1)), currentName, e);
}
});
}
// Post animation widget reset.
postAnimation();
}
};
animateThread.setDaemon(true);
animateThread.start();
}
}
/*
* Loop through all of the images in a multi-image file and display them one after another.
*/
void animateLoop() {
// Create an off-screen image to draw on, and a GC to draw with.
// Both are disposed after the animation.
Image offScreenImage = new Image(display, loader.logicalScreenWidth, loader.logicalScreenHeight);
GC offScreenImageGC = new GC(offScreenImage);
try {
// Use syncExec to get the background color of the imageCanvas.
display.syncExec(new Runnable() {
public void run() {
canvasBackground = imageCanvas.getBackground();
}
});
// Fill the off-screen image with the background color of the canvas.
offScreenImageGC.setBackground(canvasBackground);
offScreenImageGC.fillRectangle(0, 0, loader.logicalScreenWidth, loader.logicalScreenHeight);
// Draw the current image onto the off-screen image.
offScreenImageGC.drawImage(image, 0, 0, imageData.width, imageData.height, imageData.x, imageData.y,
imageData.width, imageData.height);
int repeatCount = loader.repeatCount;
while (animate && (loader.repeatCount == 0 || repeatCount > 0)) {
if (imageData.disposalMethod == SWT.DM_FILL_BACKGROUND) {
// Fill with the background color before drawing.
Color bgColor = null;
int backgroundPixel = loader.backgroundPixel;
if (showBackground && backgroundPixel != -1) {
// Fill with the background color.
RGB backgroundRGB = imageData.palette.getRGB(backgroundPixel);
bgColor = new Color(null, backgroundRGB);
}
try {
offScreenImageGC.setBackground(bgColor != null ? bgColor : canvasBackground);
offScreenImageGC.fillRectangle(imageData.x, imageData.y, imageData.width, imageData.height);
} finally {
if (bgColor != null)
bgColor.dispose();
}
} else if (imageData.disposalMethod == SWT.DM_FILL_PREVIOUS)
// Restore the previous image before drawing.
offScreenImageGC.drawImage(image, 0, 0, imageData.width, imageData.height, imageData.x,
imageData.y, imageData.width, imageData.height);
// Get the next image data.
imageDataIndex = (imageDataIndex + 1) % imageDataArray.length;
imageData = imageDataArray[imageDataIndex];
image.dispose();
image = new Image(display, imageData);
// Draw the new image data.
offScreenImageGC.drawImage(image, 0, 0, imageData.width, imageData.height, imageData.x, imageData.y,
imageData.width, imageData.height);
// Draw the off-screen image to the screen.
imageCanvasGC.drawImage(offScreenImage, 0, 0);
// Sleep for the specified delay time before drawing again.
try {
Thread.sleep(ImageAnalyzer.visibleDelay(imageData.delayTime * 10));
} catch (InterruptedException e) {
}
// If we have just drawn the last image in the set,
// then decrement the repeat count.
if (imageDataIndex == imageDataArray.length - 1)
repeatCount--;
}
} finally {
offScreenImage.dispose();
offScreenImageGC.dispose();
}
}
void changeBackground() {
String background = backgroundCombo.getText();
if (background.equals(ImageAnalyzer.bundle.getString("White")))
imageCanvas.setBackground(whiteColor);
else if (background.equals(ImageAnalyzer.bundle.getString("Black")))
imageCanvas.setBackground(blackColor);
else if (background.equals(ImageAnalyzer.bundle.getString("Red")))
imageCanvas.setBackground(redColor);
else if (background.equals(ImageAnalyzer.bundle.getString("Green")))
imageCanvas.setBackground(greenColor);
else if (background.equals(ImageAnalyzer.bundle.getString("Blue")))
imageCanvas.setBackground(blueColor);
else
imageCanvas.setBackground(null);
}
void createAlphaMenu(Menu menuBar) {
// Alpha menu
MenuItem item = new MenuItem(menuBar, SWT.CASCADE);
item.setText(ImageAnalyzer.bundle.getString("Alpha"));
Menu alphaMenu = new Menu(shell, SWT.DROP_DOWN);
item.setMenu(alphaMenu);
// Alpha -> K
item = new MenuItem(alphaMenu, SWT.PUSH);
item.setText("K");
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuComposeAlpha(ImageAnalyzer.ALPHA_CONSTANT);
}
});
// Alpha -> (K + x) % 256
item = new MenuItem(alphaMenu, SWT.PUSH);
item.setText("(K + x) % 256");
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuComposeAlpha(ImageAnalyzer.ALPHA_X);
}
});
// Alpha -> (K + y) % 256
item = new MenuItem(alphaMenu, SWT.PUSH);
item.setText("(K + y) % 256");
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuComposeAlpha(ImageAnalyzer.ALPHA_Y);
}
});
}
void createFileMenu(Menu menuBar) {
// File menu
MenuItem item = new MenuItem(menuBar, SWT.CASCADE);
item.setText(ImageAnalyzer.bundle.getString("File"));
Menu fileMenu = new Menu(shell, SWT.DROP_DOWN);
item.setMenu(fileMenu);
// File -> Open File...
item = new MenuItem(fileMenu, SWT.PUSH);
item.setText(ImageAnalyzer.bundle.getString("OpenFile"));
item.setAccelerator(SWT.MOD1 + 'O');
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuOpenFile();
}
});
// File -> Open URL...
item = new MenuItem(fileMenu, SWT.PUSH);
item.setText(ImageAnalyzer.bundle.getString("OpenURL"));
item.setAccelerator(SWT.MOD1 + 'U');
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuOpenURL();
}
});
// File -> Reopen
item = new MenuItem(fileMenu, SWT.PUSH);
item.setText(ImageAnalyzer.bundle.getString("Reopen"));
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuReopen();
}
});
new MenuItem(fileMenu, SWT.SEPARATOR);
// File -> Load File... (natively)
item = new MenuItem(fileMenu, SWT.PUSH);
item.setText(ImageAnalyzer.bundle.getString("LoadFile"));
item.setAccelerator(SWT.MOD1 + 'L');
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuLoad();
}
});
new MenuItem(fileMenu, SWT.SEPARATOR);
// File -> Save
item = new MenuItem(fileMenu, SWT.PUSH);
item.setText(ImageAnalyzer.bundle.getString("Save"));
item.setAccelerator(SWT.MOD1 + 'S');
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuSave();
}
});
// File -> Save As...
item = new MenuItem(fileMenu, SWT.PUSH);
item.setText(ImageAnalyzer.bundle.getString("Save_as"));
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuSaveAs();
}
});
// File -> Save Mask As...
item = new MenuItem(fileMenu, SWT.PUSH);
item.setText(ImageAnalyzer.bundle.getString("Save_mask_as"));
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuSaveMaskAs();
}
});
new MenuItem(fileMenu, SWT.SEPARATOR);
// File -> Print
item = new MenuItem(fileMenu, SWT.PUSH);
item.setText(ImageAnalyzer.bundle.getString("Print"));
item.setAccelerator(SWT.MOD1 + 'P');
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
menuPrint();
}
});
new MenuItem(fileMenu, SWT.SEPARATOR);
// File -> Exit
item = new MenuItem(fileMenu, SWT.PUSH);
item.setText(ImageAnalyzer.bundle.getString("Exit"));
item.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
shell.close();
}
});
}
Menu createMenuBar() {
// Menu bar.
Menu menuBar = new Menu(shell, SWT.BAR);
shell.setMenuBar(menuBar);
createFileMenu(menuBar);
createAlphaMenu(menuBar);
return menuBar;
}
void createWidgets() {
// Add the widgets to the shell in a grid layout.
GridLayout layout = new GridLayout();
layout.marginHeight = 0;
layout.numColumns = 2;
shell.setLayout(layout);
// Add a composite to contain some control widgets across the top.
Composite controls = new Composite(shell, SWT.NONE);
RowLayout rowLayout = new RowLayout();
rowLayout.marginTop = 5;
rowLayout.marginBottom = 5;
rowLayout.spacing = 8;
controls.setLayout(rowLayout);
GridData gridData = new GridData();
gridData.horizontalSpan = 2;
controls.setLayoutData(gridData);
// Combo to change the background.
Group group = new Group(controls, SWT.NONE);
group.setLayout(new RowLayout());
group.setText(ImageAnalyzer.bundle.getString("Background"));
backgroundCombo = new Combo(group, SWT.DROP_DOWN | SWT.READ_ONLY);
backgroundCombo.setItems(new String[] { ImageAnalyzer.bundle.getString("None"),
ImageAnalyzer.bundle.getString("White"), ImageAnalyzer.bundle.getString("Black"),
ImageAnalyzer.bundle.getString("Red"), ImageAnalyzer.bundle.getString("Green"),
ImageAnalyzer.bundle.getString("Blue") });
backgroundCombo.select(backgroundCombo.indexOf(ImageAnalyzer.bundle.getString("White")));
backgroundCombo.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
changeBackground();
}
});
// Combo to change the x scale.
String[] values = { "0.1", "0.2", "0.3", "0.4", "0.5", "0.6", "0.7", "0.8", "0.9", "1", "1.1", "1.2", "1.3",
"1.4", "1.5", "1.6", "1.7", "1.8", "1.9", "2", "3", "4", "5", "6", "7", "8", "9", "10", };
group = new Group(controls, SWT.NONE);
group.setLayout(new RowLayout());
group.setText(ImageAnalyzer.bundle.getString("X_scale"));
scaleXCombo = new Combo(group, SWT.DROP_DOWN);
for (int i = 0; i < values.length; i++)
scaleXCombo.add(values[i]);
scaleXCombo.select(scaleXCombo.indexOf("1"));
scaleXCombo.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
scaleX();
}
});
// Combo to change the y scale.
group = new Group(controls, SWT.NONE);
group.setLayout(new RowLayout());
group.setText(ImageAnalyzer.bundle.getString("Y_scale"));
scaleYCombo = new Combo(group, SWT.DROP_DOWN);
for (int i = 0; i < values.length; i++)
scaleYCombo.add(values[i]);
scaleYCombo.select(scaleYCombo.indexOf("1"));
scaleYCombo.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
scaleY();
}
});
// Combo to change the alpha value.
group = new Group(controls, SWT.NONE);
group.setLayout(new RowLayout());
group.setText(ImageAnalyzer.bundle.getString("Alpha_K"));
alphaCombo = new Combo(group, SWT.DROP_DOWN | SWT.READ_ONLY);
for (int i = 0; i <= 255; i += 5)
alphaCombo.add(String.valueOf(i));
alphaCombo.select(alphaCombo.indexOf("255"));
alphaCombo.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
alpha();
}
});
// Check box to request incremental display.
group = new Group(controls, SWT.NONE);
group.setLayout(new RowLayout());
group.setText(ImageAnalyzer.bundle.getString("Display"));
incrementalCheck = new Button(group, SWT.CHECK);
incrementalCheck.setText(ImageAnalyzer.bundle.getString("Incremental"));
incrementalCheck.setSelection(incremental);
incrementalCheck.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
incremental = ((Button) event.widget).getSelection();
}
});
// Check box to request transparent display.
transparentCheck = new Button(group, SWT.CHECK);
transparentCheck.setText(ImageAnalyzer.bundle.getString("Transparent"));
transparentCheck.setSelection(transparent);
transparentCheck.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
transparent = ((Button) event.widget).getSelection();
if (image != null)
imageCanvas.redraw();
}
});
// Check box to request mask display.
maskCheck = new Button(group, SWT.CHECK);
maskCheck.setText(ImageAnalyzer.bundle.getString("Mask"));
maskCheck.setSelection(showMask);
maskCheck.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
showMask = ((Button) event.widget).getSelection();
if (image != null)
imageCanvas.redraw();
}
});
// Check box to request background display.
backgroundCheck = new Button(group, SWT.CHECK);
backgroundCheck.setText(ImageAnalyzer.bundle.getString("Background"));
backgroundCheck.setSelection(showBackground);
backgroundCheck.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
showBackground = ((Button) event.widget).getSelection();
}
});
// Group the animation buttons.
group = new Group(controls, SWT.NONE);
group.setLayout(new RowLayout());
group.setText(ImageAnalyzer.bundle.getString("Animation"));
// Push button to display the previous image in a multi-image file.
previousButton = new Button(group, SWT.PUSH);
previousButton.setText(ImageAnalyzer.bundle.getString("Previous"));
previousButton.setEnabled(false);
previousButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
previous();
}
});
// Push button to display the next image in a multi-image file.
nextButton = new Button(group, SWT.PUSH);
nextButton.setText(ImageAnalyzer.bundle.getString("Next"));
nextButton.setEnabled(false);
nextButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
next();
}
});
// Push button to toggle animation of a multi-image file.
animateButton = new Button(group, SWT.PUSH);
animateButton.setText(ImageAnalyzer.bundle.getString("Animate"));
animateButton.setEnabled(false);
animateButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
animate();
}
});
// Label to show the image file type.
typeLabel = new Label(shell, SWT.NONE);
typeLabel.setText(ImageAnalyzer.bundle.getString("Type_initial"));
typeLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Canvas to show the image.
imageCanvas = new Canvas(shell, SWT.V_SCROLL | SWT.H_SCROLL | SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND);
imageCanvas.setBackground(whiteColor);
imageCanvas.setCursor(crossCursor);
gridData = new GridData();
gridData.verticalSpan = 15;
gridData.horizontalAlignment = GridData.FILL;
gridData.verticalAlignment = GridData.FILL;
gridData.grabExcessHorizontalSpace = true;
gridData.grabExcessVerticalSpace = true;
imageCanvas.setLayoutData(gridData);
imageCanvas.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent event) {
if (image == null) {
Rectangle bounds = imageCanvas.getBounds();
event.gc.fillRectangle(0, 0, bounds.width, bounds.height);
} else
paintImage(event);
}
});
imageCanvas.addMouseMoveListener(new MouseMoveListener() {
public void mouseMove(MouseEvent event) {
if (image != null)
showColorAt(event.x, event.y);
}
});
// Set up the image canvas scroll bars.
ScrollBar horizontal = imageCanvas.getHorizontalBar();
horizontal.setVisible(true);
horizontal.setMinimum(0);
horizontal.setEnabled(false);
horizontal.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
scrollHorizontally((ScrollBar) event.widget);
}
});
ScrollBar vertical = imageCanvas.getVerticalBar();
vertical.setVisible(true);
vertical.setMinimum(0);
vertical.setEnabled(false);
vertical.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
scrollVertically((ScrollBar) event.widget);
}
});
// Label to show the image size.
sizeLabel = new Label(shell, SWT.NONE);
sizeLabel.setText(ImageAnalyzer.bundle.getString("Size_initial"));
sizeLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Label to show the image depth.
depthLabel = new Label(shell, SWT.NONE);
depthLabel.setText(ImageAnalyzer.bundle.getString("Depth_initial"));
depthLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Label to show the transparent pixel.
transparentPixelLabel = new Label(shell, SWT.NONE);
transparentPixelLabel.setText(ImageAnalyzer.bundle.getString("Transparent_pixel_initial"));
transparentPixelLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Label to show the time to load.
timeToLoadLabel = new Label(shell, SWT.NONE);
timeToLoadLabel.setText(ImageAnalyzer.bundle.getString("Time_to_load_initial"));
timeToLoadLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Separate the animation fields from the rest of the fields.
Label separator = new Label(shell, SWT.SEPARATOR | SWT.HORIZONTAL);
separator.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Label to show the logical screen size for animation.
screenSizeLabel = new Label(shell, SWT.NONE);
screenSizeLabel.setText(ImageAnalyzer.bundle.getString("Animation_size_initial"));
screenSizeLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Label to show the background pixel.
backgroundPixelLabel = new Label(shell, SWT.NONE);
backgroundPixelLabel.setText(ImageAnalyzer.bundle.getString("Background_pixel_initial"));
backgroundPixelLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Label to show the image location (x, y).
locationLabel = new Label(shell, SWT.NONE);
locationLabel.setText(ImageAnalyzer.bundle.getString("Image_location_initial"));
locationLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Label to show the image disposal method.
disposalMethodLabel = new Label(shell, SWT.NONE);
disposalMethodLabel.setText(ImageAnalyzer.bundle.getString("Disposal_initial"));
disposalMethodLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Label to show the image delay time.
delayTimeLabel = new Label(shell, SWT.NONE);
delayTimeLabel.setText(ImageAnalyzer.bundle.getString("Delay_initial"));
delayTimeLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Label to show the background pixel.
repeatCountLabel = new Label(shell, SWT.NONE);
repeatCountLabel.setText(ImageAnalyzer.bundle.getString("Repeats_initial"));
repeatCountLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Separate the animation fields from the palette.
separator = new Label(shell, SWT.SEPARATOR | SWT.HORIZONTAL);
separator.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Label to show if the image has a direct or indexed palette.
paletteLabel = new Label(shell, SWT.NONE);
paletteLabel.setText(ImageAnalyzer.bundle.getString("Palette_initial"));
paletteLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
// Canvas to show the image's palette.
paletteCanvas = new Canvas(shell, SWT.BORDER | SWT.V_SCROLL | SWT.NO_REDRAW_RESIZE);
paletteCanvas.setFont(fixedWidthFont);
paletteCanvas.getVerticalBar().setVisible(true);
gridData = new GridData();
gridData.horizontalAlignment = GridData.FILL;
gridData.verticalAlignment = GridData.FILL;
GC gc = new GC(paletteLabel);
paletteWidth = gc.stringExtent(ImageAnalyzer.bundle.getString("Max_length_string")).x;
gc.dispose();
gridData.widthHint = paletteWidth;
gridData.heightHint = 16 * 11; // show at least 16 colors
paletteCanvas.setLayoutData(gridData);
paletteCanvas.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent event) {
if (image != null)
paintPalette(event);
}
});
// Set up the palette canvas scroll bar.
vertical = paletteCanvas.getVerticalBar();
vertical.setVisible(true);
vertical.setMinimum(0);
vertical.setIncrement(10);
vertical.setEnabled(false);
vertical.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
scrollPalette((ScrollBar) event.widget);
}
});
// Sash to see more of image or image data.
sash = new Sash(shell, SWT.HORIZONTAL);
gridData = new GridData();
gridData.horizontalSpan = 2;
gridData.horizontalAlignment = GridData.FILL;
sash.setLayoutData(gridData);
sash.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
if (event.detail != SWT.DRAG) {
((GridData) paletteCanvas.getLayoutData()).heightHint = SWT.DEFAULT;
Rectangle paletteCanvasBounds = paletteCanvas.getBounds();
int minY = paletteCanvasBounds.y + 20;
Rectangle dataLabelBounds = dataLabel.getBounds();
int maxY = statusLabel.getBounds().y - dataLabelBounds.height - 20;
if (event.y > minY && event.y < maxY) {
Rectangle oldSash = sash.getBounds();
sash.setBounds(event.x, event.y, event.width, event.height);
int diff = event.y - oldSash.y;
Rectangle bounds = imageCanvas.getBounds();
imageCanvas.setBounds(bounds.x, bounds.y, bounds.width, bounds.height + diff);
bounds = paletteCanvasBounds;
paletteCanvas.setBounds(bounds.x, bounds.y, bounds.width, bounds.height + diff);
bounds = dataLabelBounds;
dataLabel.setBounds(bounds.x, bounds.y + diff, bounds.width, bounds.height);
bounds = dataText.getBounds();
dataText.setBounds(bounds.x, bounds.y + diff, bounds.width, bounds.height - diff);
// shell.layout(true);
}
}
}
});
// Label to show data-specific fields.
dataLabel = new Label(shell, SWT.NONE);
dataLabel.setText(ImageAnalyzer.bundle.getString("Pixel_data_initial"));
gridData = new GridData();
gridData.horizontalSpan = 2;
gridData.horizontalAlignment = GridData.FILL;
dataLabel.setLayoutData(gridData);
// Text to show a dump of the data.
dataText = new StyledText(shell, SWT.BORDER | SWT.MULTI | SWT.READ_ONLY | SWT.V_SCROLL | SWT.H_SCROLL);
dataText.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
dataText.setFont(fixedWidthFont);
gridData = new GridData();
gridData.horizontalSpan = 2;
gridData.horizontalAlignment = GridData.FILL;
gridData.verticalAlignment = GridData.FILL;
gridData.heightHint = 128;
gridData.grabExcessVerticalSpace = true;
dataText.setLayoutData(gridData);
dataText.addMouseListener(new MouseAdapter() {
public void mouseDown(MouseEvent event) {
if (image != null && event.button == 1)
showColorForData();
}
});
dataText.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent event) {
if (image != null)
showColorForData();
}
});
// Label to show status and cursor location in image.
statusLabel = new Label(shell, SWT.NONE);
statusLabel.setText("");
gridData = new GridData();
gridData.horizontalSpan = 2;
gridData.horizontalAlignment = GridData.FILL;
statusLabel.setLayoutData(gridData);
}
/*
* Return a String containing a line-by-line dump of the data in the current imageData. The lineDelimiter parameter
* must be a string of length 1 or 2.
*/
String dataHexDump(String lineDelimiter) {
final int MAX_DUMP = 1024 * 1024;
if (image == null)
return "";
boolean truncated = false;
char[] dump = null;
byte[] alphas = imageData.alphaData;
try {
int length = imageData.height * (6 + 3 * imageData.bytesPerLine + lineDelimiter.length());
if (alphas != null && alphas.length > 0)
length += imageData.height * (6 + 3 * imageData.width + lineDelimiter.length()) + 6
+ lineDelimiter.length();
dump = new char[length];
} catch (OutOfMemoryError e) {
/* Too much data to dump - truncate. */
dump = new char[MAX_DUMP];
truncated = true;
}
int index = 0;
try {
for (int i = 0; i < imageData.data.length; i++) {
if (i % imageData.bytesPerLine == 0) {
int line = i / imageData.bytesPerLine;
dump[index++] = Character.forDigit(line / 1000 % 10, 10);
dump[index++] = Character.forDigit(line / 100 % 10, 10);
dump[index++] = Character.forDigit(line / 10 % 10, 10);
dump[index++] = Character.forDigit(line % 10, 10);
dump[index++] = ':';
dump[index++] = ' ';
}
byte b = imageData.data[i];
dump[index++] = Character.forDigit((b & 0xF0) >> 4, 16);
dump[index++] = Character.forDigit(b & 0x0F, 16);
dump[index++] = ' ';
if ((i + 1) % imageData.bytesPerLine == 0) {
dump[index++] = lineDelimiter.charAt(0);
if (lineDelimiter.length() > 1)
dump[index++] = lineDelimiter.charAt(1);
}
}
if (alphas != null && alphas.length > 0) {
dump[index++] = lineDelimiter.charAt(0);
if (lineDelimiter.length() > 1)
dump[index++] = lineDelimiter.charAt(1);
System.arraycopy(new char[] { 'A', 'l', 'p', 'h', 'a', ':' }, 0, dump, index, 6);
index += 6;
dump[index++] = lineDelimiter.charAt(0);
if (lineDelimiter.length() > 1)
dump[index++] = lineDelimiter.charAt(1);
for (int i = 0; i < alphas.length; i++) {
if (i % imageData.width == 0) {
int line = i / imageData.width;
dump[index++] = Character.forDigit(line / 1000 % 10, 10);
dump[index++] = Character.forDigit(line / 100 % 10, 10);
dump[index++] = Character.forDigit(line / 10 % 10, 10);
dump[index++] = Character.forDigit(line % 10, 10);
dump[index++] = ':';
dump[index++] = ' ';
}
byte b = alphas[i];
dump[index++] = Character.forDigit((b & 0xF0) >> 4, 16);
dump[index++] = Character.forDigit(b & 0x0F, 16);
dump[index++] = ' ';
if ((i + 1) % imageData.width == 0) {
dump[index++] = lineDelimiter.charAt(0);
if (lineDelimiter.length() > 1)
dump[index++] = lineDelimiter.charAt(1);
}
}
}
} catch (IndexOutOfBoundsException e) {
}
String result = "";
try {
result = new String(dump);
} catch (OutOfMemoryError e) {
/* Too much data to display in the text widget - truncate. */
result = new String(dump, 0, MAX_DUMP);
truncated = true;
}
if (truncated)
result += "\n ...data dump truncated at " + MAX_DUMP + "bytes...";
return result;
}
/*
* Return the specified file's image type, based on its extension. Note that this is not a very robust way to
* determine image type, and it is only to be used in the absence of any better method.
*/
int determineFileType(String filename) {
String ext = filename.substring(filename.lastIndexOf('.') + 1);
if (ext.equalsIgnoreCase("bmp"))
return showBMPDialog();
if (ext.equalsIgnoreCase("gif"))
return SWT.IMAGE_GIF;
if (ext.equalsIgnoreCase("ico"))
return SWT.IMAGE_ICO;
if (ext.equalsIgnoreCase("jpg") || ext.equalsIgnoreCase("jpeg") || ext.equalsIgnoreCase("jfif"))
return SWT.IMAGE_JPEG;
if (ext.equalsIgnoreCase("png"))
return SWT.IMAGE_PNG;
if (ext.equalsIgnoreCase("tif") || ext.equalsIgnoreCase("tiff"))
return SWT.IMAGE_TIFF;
return SWT.IMAGE_UNDEFINED;
}
void displayImage(ImageData newImageData) {
resetScaleCombos();
if (incremental && incrementalThread != null) {
// Tell the incremental thread to stop drawing.
synchronized (this) {
incrementalEvents = null;
}
// Wait until the incremental thread is done.
while (incrementalThread.isAlive())
if (!display.readAndDispatch())
display.sleep();
}
// Dispose of the old image, if there was one.
if (image != null)
image.dispose();
try {
// Cache the new image and imageData.
image = new Image(display, newImageData);
imageData = newImageData;
} catch (SWTException e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Creating_from") + " ", currentName, e);
image = null;
return;
}
// Update the widgets with the new image info.
String string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Analyzer_on"), currentName);
shell.setText(string);
if (imageDataArray.length > 1)
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Type_index"),
new Object[] { fileTypeString(imageData.type), Integer.valueOf(imageDataIndex + 1),
Integer.valueOf(imageDataArray.length) });
else
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Type_string"),
fileTypeString(imageData.type));
typeLabel.setText(string);
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Size_value"), new Object[] {
Integer.valueOf(imageData.width), Integer.valueOf(imageData.height) });
sizeLabel.setText(string);
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Depth_value"), Integer.valueOf(imageData.depth));
depthLabel.setText(string);
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Transparent_pixel_value"), ImageAnalyzer
.pixelInfo(imageData.transparentPixel));
transparentPixelLabel.setText(string);
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Time_to_load_value"), new Long(loadTime));
timeToLoadLabel.setText(string);
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Animation_size_value"), new Object[] {
Integer.valueOf(loader.logicalScreenWidth), Integer.valueOf(loader.logicalScreenHeight) });
screenSizeLabel.setText(string);
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Background_pixel_value"), ImageAnalyzer
.pixelInfo(loader.backgroundPixel));
backgroundPixelLabel.setText(string);
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Image_location_value"), new Object[] {
Integer.valueOf(imageData.x), Integer.valueOf(imageData.y) });
locationLabel.setText(string);
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Disposal_value"), new Object[] {
Integer.valueOf(imageData.disposalMethod), ImageAnalyzer.disposalString(imageData.disposalMethod) });
disposalMethodLabel.setText(string);
int delay = imageData.delayTime * 10;
int delayUsed = ImageAnalyzer.visibleDelay(delay);
if (delay != delayUsed)
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Delay_value"), new Object[] {
Integer.valueOf(delay), Integer.valueOf(delayUsed) });
else
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Delay_used"), Integer.valueOf(delay));
delayTimeLabel.setText(string);
if (loader.repeatCount == 0)
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Repeats_forever"),
Integer.valueOf(loader.repeatCount));
else
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Repeats_value"),
Integer.valueOf(loader.repeatCount));
repeatCountLabel.setText(string);
if (imageData.palette.isDirect)
string = ImageAnalyzer.bundle.getString("Palette_direct");
else
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Palette_value"),
Integer.valueOf(imageData.palette.getRGBs().length));
paletteLabel.setText(string);
string = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Pixel_data_value"), new Object[] {
Integer.valueOf(imageData.bytesPerLine),
Integer.valueOf(imageData.scanlinePad),
ImageAnalyzer.depthInfo(imageData.depth),
imageData.alphaData != null && imageData.alphaData.length > 0 ? ImageAnalyzer.bundle
.getString("Scroll_for_alpha") : "" });
dataLabel.setText(string);
String data = dataHexDump(dataText.getLineDelimiter());
dataText.setText(data);
// bold the first column all the way down
int index = 0;
while ((index = data.indexOf(':', index + 1)) != -1) {
int start = index - ImageAnalyzer.INDEX_DIGITS;
int length = ImageAnalyzer.INDEX_DIGITS;
if (Character.isLetter(data.charAt(index - 1))) {
start = index - ImageAnalyzer.ALPHA_CHARS;
length = ImageAnalyzer.ALPHA_CHARS;
}
dataText.setStyleRange(new StyleRange(start, length, dataText.getForeground(), dataText.getBackground(),
SWT.BOLD));
}
statusLabel.setText("");
// Redraw both canvases.
resetScrollBars();
paletteCanvas.redraw();
imageCanvas.redraw();
}
/*
* Return a String describing the specified image file type.
*/
String fileTypeString(int filetype) {
if (filetype == SWT.IMAGE_BMP)
return "BMP";
if (filetype == SWT.IMAGE_BMP_RLE)
return "RLE" + imageData.depth + " BMP";
if (filetype == SWT.IMAGE_OS2_BMP)
return "OS/2 BMP";
if (filetype == SWT.IMAGE_GIF)
return "GIF";
if (filetype == SWT.IMAGE_ICO)
return "ICO";
if (filetype == SWT.IMAGE_JPEG)
return "JPEG";
if (filetype == SWT.IMAGE_PNG)
return "PNG";
if (filetype == SWT.IMAGE_TIFF)
return "TIFF";
return ImageAnalyzer.bundle.getString("Unknown_ac");
}
/*
* Called when incremental image data has been loaded, for example, for interlaced GIF/PNG or progressive JPEG.
*/
void incrementalDataLoaded(ImageLoaderEvent event) {
// Synchronize so that we do not try to add while
// the incremental drawing thread is removing.
synchronized (this) {
incrementalEvents.addElement(event);
}
}
/*
* Called to start a thread that draws incremental images as they are loaded.
*/
void incrementalThreadStart() {
incrementalEvents = new Vector();
incrementalThread = new Thread("Incremental") {
public void run() {
// Draw the first ImageData increment.
while (incrementalEvents != null)
// Synchronize so we don't try to remove when the vector is null.
synchronized (ImageAnalyzer.this) {
if (incrementalEvents != null)
if (incrementalEvents.size() > 0) {
ImageLoaderEvent event = (ImageLoaderEvent) incrementalEvents.remove(0);
if (image != null)
image.dispose();
image = new Image(display, event.imageData);
imageData = event.imageData;
imageCanvasGC.drawImage(image, 0, 0, imageData.width, imageData.height, imageData.x,
imageData.y, imageData.width, imageData.height);
} else
Thread.yield();
}
display.wake();
}
};
incrementalThread.setDaemon(true);
incrementalThread.start();
}
void menuComposeAlpha(int alpha_op) {
if (image == null)
return;
animate = false; // stop any animation in progress
Cursor waitCursor = new Cursor(display, SWT.CURSOR_WAIT);
shell.setCursor(waitCursor);
imageCanvas.setCursor(waitCursor);
try {
if (alpha_op == ImageAnalyzer.ALPHA_CONSTANT)
imageData.alpha = alpha;
else {
imageData.alpha = -1;
switch (alpha_op) {
case ALPHA_X:
for (int y = 0; y < imageData.height; y++)
for (int x = 0; x < imageData.width; x++)
imageData.setAlpha(x, y, (x + alpha) % 256);
break;
case ALPHA_Y:
for (int y = 0; y < imageData.height; y++)
for (int x = 0; x < imageData.width; x++)
imageData.setAlpha(x, y, (y + alpha) % 256);
break;
default:
break;
}
}
displayImage(imageData);
} finally {
shell.setCursor(null);
imageCanvas.setCursor(crossCursor);
waitCursor.dispose();
}
}
/* Just use Image(device, filename) to load an image file. */
void menuLoad() {
animate = false; // stop any animation in progress
// Get the user to choose an image file.
FileDialog fileChooser = new FileDialog(shell, SWT.OPEN);
if (lastPath != null)
fileChooser.setFilterPath(lastPath);
fileChooser.setFilterExtensions(ImageAnalyzer.OPEN_FILTER_EXTENSIONS);
fileChooser.setFilterNames(ImageAnalyzer.OPEN_FILTER_NAMES);
String filename = fileChooser.open();
lastPath = fileChooser.getFilterPath();
if (filename == null)
return;
Cursor waitCursor = new Cursor(display, SWT.CURSOR_WAIT);
shell.setCursor(waitCursor);
imageCanvas.setCursor(waitCursor);
try {
// Read the new image from the chosen file.
long startTime = System.currentTimeMillis();
Image newImage = new Image(display, filename);
loadTime = System.currentTimeMillis() - startTime; // don't include getImageData in load time
imageData = newImage.getImageData();
// Cache the filename.
currentName = filename;
fileName = filename;
// Fill in array and loader data.
loader = new ImageLoader();
imageDataArray = new ImageData[] { imageData };
loader.data = imageDataArray;
// Display the image.
imageDataIndex = 0;
displayImage(imageData);
} catch (SWTException e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Loading_lc"), filename, e);
} catch (SWTError e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Loading_lc"), filename, e);
} catch (OutOfMemoryError e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Loading_lc"), filename, e);
} finally {
shell.setCursor(null);
imageCanvas.setCursor(crossCursor);
waitCursor.dispose();
}
}
void menuOpenFile() {
animate = false; // stop any animation in progress
// Get the user to choose an image file.
FileDialog fileChooser = new FileDialog(shell, SWT.OPEN);
if (lastPath != null)
fileChooser.setFilterPath(lastPath);
fileChooser.setFilterExtensions(ImageAnalyzer.OPEN_FILTER_EXTENSIONS);
fileChooser.setFilterNames(ImageAnalyzer.OPEN_FILTER_NAMES);
String filename = fileChooser.open();
lastPath = fileChooser.getFilterPath();
if (filename == null)
return;
Cursor waitCursor = new Cursor(display, SWT.CURSOR_WAIT);
shell.setCursor(waitCursor);
imageCanvas.setCursor(waitCursor);
ImageLoader oldLoader = loader;
try {
loader = new ImageLoader();
if (incremental) {
// Prepare to handle incremental events.
loader.addImageLoaderListener(new ImageLoaderListener() {
public void imageDataLoaded(ImageLoaderEvent event) {
incrementalDataLoaded(event);
}
});
incrementalThreadStart();
}
// Read the new image(s) from the chosen file.
long startTime = System.currentTimeMillis();
imageDataArray = loader.load(filename);
loadTime = System.currentTimeMillis() - startTime;
if (imageDataArray.length > 0) {
// Cache the filename.
currentName = filename;
fileName = filename;
// If there are multiple images in the file (typically GIF)
// then enable the Previous, Next and Animate buttons.
previousButton.setEnabled(imageDataArray.length > 1);
nextButton.setEnabled(imageDataArray.length > 1);
animateButton.setEnabled(imageDataArray.length > 1 && loader.logicalScreenWidth > 0
&& loader.logicalScreenHeight > 0);
// Display the first image in the file.
imageDataIndex = 0;
displayImage(imageDataArray[imageDataIndex]);
}
} catch (SWTException e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Loading_lc"), filename, e);
loader = oldLoader;
} catch (SWTError e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Loading_lc"), filename, e);
loader = oldLoader;
} catch (OutOfMemoryError e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Loading_lc"), filename, e);
loader = oldLoader;
} finally {
shell.setCursor(null);
imageCanvas.setCursor(crossCursor);
waitCursor.dispose();
}
}
void menuOpenURL() {
animate = false; // stop any animation in progress
// Get the user to choose an image URL.
TextPrompter textPrompter = new TextPrompter(shell, SWT.APPLICATION_MODAL | SWT.DIALOG_TRIM);
textPrompter.setText(ImageAnalyzer.bundle.getString("OpenURLDialog"));
textPrompter.setMessage(ImageAnalyzer.bundle.getString("EnterURL"));
String urlname = textPrompter.open();
if (urlname == null)
return;
Cursor waitCursor = new Cursor(display, SWT.CURSOR_WAIT);
shell.setCursor(waitCursor);
imageCanvas.setCursor(waitCursor);
ImageLoader oldLoader = loader;
try {
URL url = new URL(urlname);
InputStream stream = url.openStream();
loader = new ImageLoader();
if (incremental) {
// Prepare to handle incremental events.
loader.addImageLoaderListener(new ImageLoaderListener() {
public void imageDataLoaded(ImageLoaderEvent event) {
incrementalDataLoaded(event);
}
});
incrementalThreadStart();
}
// Read the new image(s) from the chosen URL.
long startTime = System.currentTimeMillis();
imageDataArray = loader.load(stream);
loadTime = System.currentTimeMillis() - startTime;
stream.close();
if (imageDataArray.length > 0) {
currentName = urlname;
fileName = null;
// If there are multiple images (typically GIF)
// then enable the Previous, Next and Animate buttons.
previousButton.setEnabled(imageDataArray.length > 1);
nextButton.setEnabled(imageDataArray.length > 1);
animateButton.setEnabled(imageDataArray.length > 1 && loader.logicalScreenWidth > 0
&& loader.logicalScreenHeight > 0);
// Display the first image.
imageDataIndex = 0;
displayImage(imageDataArray[imageDataIndex]);
}
} catch (Exception e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Loading_lc"), urlname, e);
loader = oldLoader;
} catch (OutOfMemoryError e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Loading_lc"), urlname, e);
loader = oldLoader;
} finally {
shell.setCursor(null);
imageCanvas.setCursor(crossCursor);
waitCursor.dispose();
}
}
void menuPrint() {
if (image == null)
return;
try {
// Ask the user to specify the printer.
PrintDialog dialog = new PrintDialog(shell, SWT.NONE);
PrinterData printerData = dialog.open();
if (printerData == null)
return;
Printer printer = new Printer(printerData);
Point screenDPI = display.getDPI();
Point printerDPI = printer.getDPI();
int scaleFactor = printerDPI.x / screenDPI.x;
Rectangle trim = printer.computeTrim(0, 0, 0, 0);
if (printer.startJob(currentName)) {
if (printer.startPage()) {
GC gc = new GC(printer);
int transparentPixel = imageData.transparentPixel;
if (transparentPixel != -1 && !transparent)
imageData.transparentPixel = -1;
Image printerImage = new Image(printer, imageData);
gc.drawImage(printerImage, 0, 0, imageData.width, imageData.height, -trim.x, -trim.y, scaleFactor
* imageData.width, scaleFactor * imageData.height);
if (transparentPixel != -1 && !transparent)
imageData.transparentPixel = transparentPixel;
printerImage.dispose();
gc.dispose();
printer.endPage();
}
printer.endJob();
}
printer.dispose();
} catch (SWTError e) {
MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
box.setMessage(ImageAnalyzer.bundle.getString("Printing_error") + e.getMessage());
box.open();
}
}
void menuReopen() {
if (currentName == null)
return;
animate = false; // stop any animation in progress
Cursor waitCursor = new Cursor(display, SWT.CURSOR_WAIT);
shell.setCursor(waitCursor);
imageCanvas.setCursor(waitCursor);
try {
loader = new ImageLoader();
ImageData[] newImageData;
if (fileName == null) {
URL url = new URL(currentName);
InputStream stream = url.openStream();
long startTime = System.currentTimeMillis();
newImageData = loader.load(stream);
loadTime = System.currentTimeMillis() - startTime;
stream.close();
} else {
long startTime = System.currentTimeMillis();
newImageData = loader.load(fileName);
loadTime = System.currentTimeMillis() - startTime;
}
imageDataIndex = 0;
displayImage(newImageData[imageDataIndex]);
} catch (Exception e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Reloading_lc"), currentName, e);
} catch (OutOfMemoryError e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Reloading_lc"), currentName, e);
} finally {
shell.setCursor(null);
imageCanvas.setCursor(crossCursor);
waitCursor.dispose();
}
}
void menuSave() {
if (image == null)
return;
animate = false; // stop any animation in progress
// If the image file type is unknown, we can't 'Save',
// so we have to use 'Save As...'.
if (imageData.type == SWT.IMAGE_UNDEFINED || fileName == null) {
menuSaveAs();
return;
}
Cursor waitCursor = new Cursor(display, SWT.CURSOR_WAIT);
shell.setCursor(waitCursor);
imageCanvas.setCursor(waitCursor);
try {
// Save the current image to the current file.
loader.data = new ImageData[] { imageData };
loader.save(fileName, imageData.type);
} catch (SWTException e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Saving_lc"), fileName, e);
} catch (SWTError e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Saving_lc"), fileName, e);
} finally {
shell.setCursor(null);
imageCanvas.setCursor(crossCursor);
waitCursor.dispose();
}
}
void menuSaveAs() {
if (image == null)
return;
animate = false; // stop any animation in progress
// Get the user to choose a file name and type to save.
FileDialog fileChooser = new FileDialog(shell, SWT.SAVE);
fileChooser.setFilterPath(lastPath);
if (fileName != null) {
String name = fileName;
int nameStart = name.lastIndexOf(java.io.File.separatorChar);
if (nameStart > -1)
name = name.substring(nameStart + 1);
fileChooser.setFileName(name);
}
fileChooser.setFilterExtensions(ImageAnalyzer.SAVE_FILTER_EXTENSIONS);
fileChooser.setFilterNames(ImageAnalyzer.SAVE_FILTER_NAMES);
String filename = fileChooser.open();
lastPath = fileChooser.getFilterPath();
if (filename == null)
return;
// Figure out what file type the user wants saved.
// We need to rely on the file extension because FileDialog
// does not have API for asking what filter type was selected.
int filetype = determineFileType(filename);
if (filetype == SWT.IMAGE_UNDEFINED) {
MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
box.setMessage(ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Unknown_extension"), filename
.substring(filename.lastIndexOf('.') + 1)));
box.open();
return;
}
if (new java.io.File(filename).exists()) {
MessageBox box = new MessageBox(shell, SWT.ICON_QUESTION | SWT.OK | SWT.CANCEL);
box.setMessage(ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Overwrite"), filename));
if (box.open() == SWT.CANCEL)
return;
}
Cursor waitCursor = new Cursor(display, SWT.CURSOR_WAIT);
shell.setCursor(waitCursor);
imageCanvas.setCursor(waitCursor);
try {
// Save the current image to the specified file.
boolean multi = false;
if (loader.data.length > 1) {
MessageBox box = new MessageBox(shell, SWT.ICON_QUESTION | SWT.YES | SWT.NO | SWT.CANCEL);
box.setMessage(ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Save_all"), Integer.valueOf(
loader.data.length)));
int result = box.open();
if (result == SWT.CANCEL)
return;
if (result == SWT.YES)
multi = true;
}
/*
* If the image has transparency but the user has transparency turned off, turn it off in the saved image.
*/
int transparentPixel = imageData.transparentPixel;
if (!multi && transparentPixel != -1 && !transparent)
imageData.transparentPixel = -1;
if (!multi)
loader.data = new ImageData[] { imageData };
loader.save(filename, filetype);
/* Restore the previous transparency setting. */
if (!multi && transparentPixel != -1 && !transparent)
imageData.transparentPixel = transparentPixel;
// Update the shell title and file type label,
// and use the new file.
fileName = filename;
shell.setText(ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Analyzer_on"), filename));
typeLabel.setText(ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Type_string"),
fileTypeString(filetype)));
} catch (SWTException e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Saving_lc"), filename, e);
} catch (SWTError e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Saving_lc"), filename, e);
} finally {
shell.setCursor(null);
imageCanvas.setCursor(crossCursor);
waitCursor.dispose();
}
}
void menuSaveMaskAs() {
if (image == null || !showMask)
return;
if (imageData.getTransparencyType() == SWT.TRANSPARENCY_NONE)
return;
animate = false; // stop any animation in progress
// Get the user to choose a file name and type to save.
FileDialog fileChooser = new FileDialog(shell, SWT.SAVE);
fileChooser.setFilterPath(lastPath);
if (fileName != null)
fileChooser.setFileName(fileName);
fileChooser.setFilterExtensions(ImageAnalyzer.SAVE_FILTER_EXTENSIONS);
fileChooser.setFilterNames(ImageAnalyzer.SAVE_FILTER_NAMES);
String filename = fileChooser.open();
lastPath = fileChooser.getFilterPath();
if (filename == null)
return;
// Figure out what file type the user wants saved.
// We need to rely on the file extension because FileDialog
// does not have API for asking what filter type was selected.
int filetype = determineFileType(filename);
if (filetype == SWT.IMAGE_UNDEFINED) {
MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
box.setMessage(ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Unknown_extension"), filename
.substring(filename.lastIndexOf('.') + 1)));
box.open();
return;
}
if (new java.io.File(filename).exists()) {
MessageBox box = new MessageBox(shell, SWT.ICON_QUESTION | SWT.OK | SWT.CANCEL);
box.setMessage(ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Overwrite"), filename));
if (box.open() == SWT.CANCEL)
return;
}
Cursor waitCursor = new Cursor(display, SWT.CURSOR_WAIT);
shell.setCursor(waitCursor);
imageCanvas.setCursor(waitCursor);
try {
// Save the mask of the current image to the specified file.
ImageData maskImageData = imageData.getTransparencyMask();
loader.data = new ImageData[] { maskImageData };
loader.save(filename, filetype);
} catch (SWTException e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Saving_lc"), filename, e);
} catch (SWTError e) {
showErrorDialog(ImageAnalyzer.bundle.getString("Saving_lc"), filename, e);
} finally {
shell.setCursor(null);
imageCanvas.setCursor(crossCursor);
waitCursor.dispose();
}
}
/*
* Called when the Next button is pressed. Display the next image in a multi-image file.
*/
void next() {
if (image != null && imageDataArray.length > 1) {
imageDataIndex = (imageDataIndex + 1) % imageDataArray.length;
displayImage(imageDataArray[imageDataIndex]);
}
}
void paintImage(PaintEvent event) {
GC gc = event.gc;
Image paintImage = image;
/*
* If the user wants to see the transparent pixel in its actual color, then temporarily turn off transparency.
*/
int transparentPixel = imageData.transparentPixel;
if (transparentPixel != -1 && !transparent) {
imageData.transparentPixel = -1;
paintImage = new Image(display, imageData);
}
/* Scale the image when drawing, using the user's selected scaling factor. */
int w = Math.round(imageData.width * xscale);
int h = Math.round(imageData.height * yscale);
/* If any of the background is visible, fill it with the background color. */
Rectangle bounds = imageCanvas.getBounds();
if (imageData.getTransparencyType() != SWT.TRANSPARENCY_NONE)
/* If there is any transparency at all, fill the whole background. */
gc.fillRectangle(0, 0, bounds.width, bounds.height);
else {
/* Otherwise, just fill in the backwards L. */
if (ix + w < bounds.width)
gc.fillRectangle(ix + w, 0, bounds.width - (ix + w), bounds.height);
if (iy + h < bounds.height)
gc.fillRectangle(0, iy + h, ix + w, bounds.height - (iy + h));
}
/* Draw the image */
gc.drawImage(paintImage, 0, 0, imageData.width, imageData.height, ix + imageData.x, iy + imageData.y, w, h);
/* If there is a mask and the user wants to see it, draw it. */
if (showMask && imageData.getTransparencyType() != SWT.TRANSPARENCY_NONE) {
ImageData maskImageData = imageData.getTransparencyMask();
Image maskImage = new Image(display, maskImageData);
gc.drawImage(maskImage, 0, 0, imageData.width, imageData.height, w + 10 + ix + imageData.x, iy
+ imageData.y, w, h);
maskImage.dispose();
}
/* If transparency was temporarily disabled, restore it. */
if (transparentPixel != -1 && !transparent) {
imageData.transparentPixel = transparentPixel;
paintImage.dispose();
}
}
void paintPalette(PaintEvent event) {
GC gc = event.gc;
gc.fillRectangle(paletteCanvas.getClientArea());
if (imageData.palette.isDirect) {
// For a direct palette, display the masks.
int y = py + 10;
int xTab = 50;
gc.drawString("rMsk", 10, y, true);
gc.drawString(ImageAnalyzer.toHex4ByteString(imageData.palette.redMask), xTab, y, true);
gc.drawString("gMsk", 10, y += 12, true);
gc.drawString(ImageAnalyzer.toHex4ByteString(imageData.palette.greenMask), xTab, y, true);
gc.drawString("bMsk", 10, y += 12, true);
gc.drawString(ImageAnalyzer.toHex4ByteString(imageData.palette.blueMask), xTab, y, true);
gc.drawString("rShf", 10, y += 12, true);
gc.drawString(Integer.toString(imageData.palette.redShift), xTab, y, true);
gc.drawString("gShf", 10, y += 12, true);
gc.drawString(Integer.toString(imageData.palette.greenShift), xTab, y, true);
gc.drawString("bShf", 10, y += 12, true);
gc.drawString(Integer.toString(imageData.palette.blueShift), xTab, y, true);
} else {
// For an indexed palette, display the palette colors and indices.
RGB[] rgbs = imageData.palette.getRGBs();
if (rgbs != null) {
int xTab1 = 40, xTab2 = 100;
for (int i = 0; i < rgbs.length; i++) {
int y = (i + 1) * 10 + py;
gc.drawString(String.valueOf(i), 10, y, true);
gc.drawString(ImageAnalyzer.toHexByteString(rgbs[i].red)
+ ImageAnalyzer.toHexByteString(rgbs[i].green)
+ ImageAnalyzer.toHexByteString(rgbs[i].blue), xTab1, y, true);
Color color = new Color(display, rgbs[i]);
gc.setBackground(color);
gc.fillRectangle(xTab2, y + 2, 10, 10);
color.dispose();
}
}
}
}
/*
* Post animation reset.
*/
void postAnimation() {
display.syncExec(new Runnable() {
public void run() {
// Enable anything we disabled before the animation.
previousButton.setEnabled(true);
nextButton.setEnabled(true);
backgroundCombo.setEnabled(true);
scaleXCombo.setEnabled(true);
scaleYCombo.setEnabled(true);
alphaCombo.setEnabled(true);
incrementalCheck.setEnabled(true);
transparentCheck.setEnabled(true);
maskCheck.setEnabled(true);
// Reset the label of the Animate button.
animateButton.setText(ImageAnalyzer.bundle.getString("Animate"));
if (animate)
// If animate is still true, we finished the
// full number of repeats. Leave the image as-is.
animate = false;
else
// Redisplay the current image and its palette.
displayImage(imageDataArray[imageDataIndex]);
}
});
}
/*
* Pre animation setup.
*/
void preAnimation() {
display.syncExec(new Runnable() {
public void run() {
// Change the label of the Animate button to 'Stop'.
animateButton.setText(ImageAnalyzer.bundle.getString("Stop"));
// Disable anything we don't want the user
// to select during the animation.
previousButton.setEnabled(false);
nextButton.setEnabled(false);
backgroundCombo.setEnabled(false);
scaleXCombo.setEnabled(false);
scaleYCombo.setEnabled(false);
alphaCombo.setEnabled(false);
incrementalCheck.setEnabled(false);
transparentCheck.setEnabled(false);
maskCheck.setEnabled(false);
// leave backgroundCheck enabled
// Reset the scale combos and scrollbars.
resetScaleCombos();
resetScrollBars();
}
});
}
/*
* Called when the Previous button is pressed. Display the previous image in a multi-image file.
*/
void previous() {
if (image != null && imageDataArray.length > 1) {
if (imageDataIndex == 0)
imageDataIndex = imageDataArray.length;
imageDataIndex = imageDataIndex - 1;
displayImage(imageDataArray[imageDataIndex]);
}
}
// Reset the scale combos to 1.
void resetScaleCombos() {
xscale = 1;
yscale = 1;
scaleXCombo.select(scaleXCombo.indexOf("1"));
scaleYCombo.select(scaleYCombo.indexOf("1"));
}
// Reset the scroll bars to 0.
void resetScrollBars() {
if (image == null)
return;
ix = 0;
iy = 0;
py = 0;
resizeScrollBars();
imageCanvas.getHorizontalBar().setSelection(0);
imageCanvas.getVerticalBar().setSelection(0);
paletteCanvas.getVerticalBar().setSelection(0);
}
void resizeScrollBars() {
// Set the max and thumb for the image canvas scroll bars.
ScrollBar horizontal = imageCanvas.getHorizontalBar();
ScrollBar vertical = imageCanvas.getVerticalBar();
Rectangle canvasBounds = imageCanvas.getClientArea();
int width = Math.round(imageData.width * xscale);
if (width > canvasBounds.width) {
// The image is wider than the canvas.
horizontal.setEnabled(true);
horizontal.setMaximum(width);
horizontal.setThumb(canvasBounds.width);
horizontal.setPageIncrement(canvasBounds.width);
} else {
// The canvas is wider than the image.
horizontal.setEnabled(false);
if (ix != 0) {
// Make sure the image is completely visible.
ix = 0;
imageCanvas.redraw();
}
}
int height = Math.round(imageData.height * yscale);
if (height > canvasBounds.height) {
// The image is taller than the canvas.
vertical.setEnabled(true);
vertical.setMaximum(height);
vertical.setThumb(canvasBounds.height);
vertical.setPageIncrement(canvasBounds.height);
} else {
// The canvas is taller than the image.
vertical.setEnabled(false);
if (iy != 0) {
// Make sure the image is completely visible.
iy = 0;
imageCanvas.redraw();
}
}
// Set the max and thumb for the palette canvas scroll bar.
vertical = paletteCanvas.getVerticalBar();
if (imageData.palette.isDirect)
vertical.setEnabled(false);
else { // indexed palette
canvasBounds = paletteCanvas.getClientArea();
int paletteHeight = imageData.palette.getRGBs().length * 10 + 20; // 10 pixels each index + 20 for
// margins.
vertical.setEnabled(true);
vertical.setMaximum(paletteHeight);
vertical.setThumb(canvasBounds.height);
vertical.setPageIncrement(canvasBounds.height);
}
}
void resizeShell(ControlEvent event) {
if (image == null || shell.isDisposed())
return;
resizeScrollBars();
}
/*
* Called when the ScaleX combo selection changes.
*/
void scaleX() {
try {
xscale = Float.parseFloat(scaleXCombo.getText());
} catch (NumberFormatException e) {
xscale = 1;
scaleXCombo.select(scaleXCombo.indexOf("1"));
}
if (image != null) {
resizeScrollBars();
imageCanvas.redraw();
}
}
/*
* Called when the ScaleY combo selection changes.
*/
void scaleY() {
try {
yscale = Float.parseFloat(scaleYCombo.getText());
} catch (NumberFormatException e) {
yscale = 1;
scaleYCombo.select(scaleYCombo.indexOf("1"));
}
if (image != null) {
resizeScrollBars();
imageCanvas.redraw();
}
}
/*
* Called when the image canvas' horizontal scrollbar is selected.
*/
void scrollHorizontally(ScrollBar scrollBar) {
if (image == null)
return;
Rectangle canvasBounds = imageCanvas.getClientArea();
int width = Math.round(imageData.width * xscale);
int height = Math.round(imageData.height * yscale);
if (width > canvasBounds.width) {
// Only scroll if the image is bigger than the canvas.
int x = -scrollBar.getSelection();
if (x + width < canvasBounds.width)
// Don't scroll past the end of the image.
x = canvasBounds.width - width;
imageCanvas.scroll(x, iy, ix, iy, width, height, false);
ix = x;
}
}
/*
* Called when the palette canvas' vertical scrollbar is selected.
*/
void scrollPalette(ScrollBar scrollBar) {
if (image == null)
return;
Rectangle canvasBounds = paletteCanvas.getClientArea();
int paletteHeight = imageData.palette.getRGBs().length * 10 + 20;
if (paletteHeight > canvasBounds.height) {
// Only scroll if the palette is bigger than the canvas.
int y = -scrollBar.getSelection();
if (y + paletteHeight < canvasBounds.height)
// Don't scroll past the end of the palette.
y = canvasBounds.height - paletteHeight;
paletteCanvas.scroll(0, y, 0, py, paletteWidth, paletteHeight, false);
py = y;
}
}
/*
* Called when the image canvas' vertical scrollbar is selected.
*/
void scrollVertically(ScrollBar scrollBar) {
if (image == null)
return;
Rectangle canvasBounds = imageCanvas.getClientArea();
int width = Math.round(imageData.width * xscale);
int height = Math.round(imageData.height * yscale);
if (height > canvasBounds.height) {
// Only scroll if the image is bigger than the canvas.
int y = -scrollBar.getSelection();
if (y + height < canvasBounds.height)
// Don't scroll past the end of the image.
y = canvasBounds.height - height;
imageCanvas.scroll(ix, y, ix, iy, width, height, false);
iy = y;
}
}
/*
* Open a dialog asking the user for more information on the type of BMP file to save.
*/
int showBMPDialog() {
final int[] bmpType = new int[1];
bmpType[0] = SWT.IMAGE_BMP;
SelectionListener radioSelected = new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
Button radio = (Button) event.widget;
if (radio.getSelection())
bmpType[0] = ((Integer) radio.getData()).intValue();
}
};
// need to externalize strings
final Shell dialog = new Shell(shell, SWT.DIALOG_TRIM);
dialog.setText(ImageAnalyzer.bundle.getString("Save_as_type"));
dialog.setLayout(new GridLayout());
Label label = new Label(dialog, SWT.NONE);
label.setText(ImageAnalyzer.bundle.getString("Save_as_type_label"));
Button radio = new Button(dialog, SWT.RADIO);
radio.setText(ImageAnalyzer.bundle.getString("Save_as_type_no_compress"));
radio.setSelection(true);
radio.setData(Integer.valueOf(SWT.IMAGE_BMP));
radio.addSelectionListener(radioSelected);
radio = new Button(dialog, SWT.RADIO);
radio.setText(ImageAnalyzer.bundle.getString("Save_as_type_rle_compress"));
radio.setData(Integer.valueOf(SWT.IMAGE_BMP_RLE));
radio.addSelectionListener(radioSelected);
radio = new Button(dialog, SWT.RADIO);
radio.setText(ImageAnalyzer.bundle.getString("Save_as_type_os2"));
radio.setData(Integer.valueOf(SWT.IMAGE_OS2_BMP));
radio.addSelectionListener(radioSelected);
label = new Label(dialog, SWT.SEPARATOR | SWT.HORIZONTAL);
label.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
Button ok = new Button(dialog, SWT.PUSH);
ok.setText(ImageAnalyzer.bundle.getString("OK"));
GridData data = new GridData();
data.horizontalAlignment = SWT.CENTER;
data.widthHint = 75;
ok.setLayoutData(data);
ok.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
dialog.close();
}
});
dialog.pack();
dialog.open();
while (!dialog.isDisposed())
if (!display.readAndDispatch())
display.sleep();
return bmpType[0];
}
/*
* Called when the mouse moves in the image canvas. Show the color of the image at the point under the mouse.
*/
void showColorAt(int mx, int my) {
int x = mx - imageData.x - ix;
int y = my - imageData.y - iy;
showColorForPixel(x, y);
}
/*
* Called when a mouse down or key press is detected in the data text. Show the color of the pixel at the caret
* position in the data text.
*/
void showColorForData() {
int delimiterLength = dataText.getLineDelimiter().length();
int charactersPerLine = 6 + 3 * imageData.bytesPerLine + delimiterLength;
int position = dataText.getCaretOffset();
int y = position / charactersPerLine;
if (position - y * charactersPerLine < 6 || (y + 1) * charactersPerLine - position <= delimiterLength) {
statusLabel.setText("");
return;
}
int dataPosition = position - 6 * (y + 1) - delimiterLength * y;
int byteNumber = dataPosition / 3;
int where = dataPosition - byteNumber * 3;
int xByte = byteNumber % imageData.bytesPerLine;
int x = -1;
int depth = imageData.depth;
if (depth == 1) { // 8 pixels per byte (can only show 3 of 8)
if (where == 0)
x = xByte * 8;
if (where == 1)
x = xByte * 8 + 3;
if (where == 2)
x = xByte * 8 + 7;
}
if (depth == 2) { // 4 pixels per byte (can only show 3 of 4)
if (where == 0)
x = xByte * 4;
if (where == 1)
x = xByte * 4 + 1;
if (where == 2)
x = xByte * 4 + 3;
}
if (depth == 4) { // 2 pixels per byte
if (where == 0)
x = xByte * 2;
if (where == 1)
x = xByte * 2;
if (where == 2)
x = xByte * 2 + 1;
}
if (depth == 8)
x = xByte;
if (depth == 16)
x = xByte / 2;
if (depth == 24)
x = xByte / 3;
if (depth == 32)
x = xByte / 4;
if (x != -1)
showColorForPixel(x, y);
else
statusLabel.setText("");
}
/*
* Set the status label to show color information for the specified pixel in the image.
*/
void showColorForPixel(int x, int y) {
if (x >= 0 && x < imageData.width && y >= 0 && y < imageData.height) {
int pixel = imageData.getPixel(x, y);
RGB rgb = imageData.palette.getRGB(pixel);
boolean hasAlpha = false;
int alphaValue = 0;
if (imageData.alphaData != null && imageData.alphaData.length > 0) {
hasAlpha = true;
alphaValue = imageData.getAlpha(x, y);
}
String rgbMessageFormat = ImageAnalyzer.bundle.getString(hasAlpha ? "RGBA" : "RGB");
Object[] rgbArgs = { Integer.toString(rgb.red), Integer.toString(rgb.green), Integer.toString(rgb.blue),
Integer.toString(alphaValue) };
Object[] rgbHexArgs = { Integer.toHexString(rgb.red), Integer.toHexString(rgb.green),
Integer.toHexString(rgb.blue), Integer.toHexString(alphaValue) };
Object[] args = { Integer.valueOf(x), Integer.valueOf(y), Integer.valueOf(pixel), Integer.toHexString(pixel),
ImageAnalyzer.createMsg(rgbMessageFormat, rgbArgs),
ImageAnalyzer.createMsg(rgbMessageFormat, rgbHexArgs),
pixel == imageData.transparentPixel ? ImageAnalyzer.bundle.getString("Color_at_transparent") : "" };
statusLabel.setText(ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Color_at"), args));
} else
statusLabel.setText("");
}
/*
* Open an error dialog displaying the specified information.
*/
void showErrorDialog(String operation, String filename, Throwable e) {
MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
String message = ImageAnalyzer.createMsg(ImageAnalyzer.bundle.getString("Error"), new String[] { operation,
filename });
String errorMessage = "";
if (e != null)
if (e instanceof SWTException) {
SWTException swte = (SWTException) e;
errorMessage = swte.getMessage();
if (swte.throwable != null)
errorMessage += ":\n" + swte.throwable.toString();
} else if (e instanceof SWTError) {
SWTError swte = (SWTError) e;
errorMessage = swte.getMessage();
if (swte.throwable != null)
errorMessage += ":\n" + swte.throwable.toString();
} else
errorMessage = e.toString();
box.setMessage(message + errorMessage);
box.open();
}
}