examples/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/compositetable/day/internal/TimeSlot.java - platform/eclipse.platform.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006 The Pampered Chef 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:
  *     The Pampered Chef - initial API and implementation
  ******************************************************************************/
 package org.eclipse.jface.examples.databinding.compositetable.day.internal;

 import java.util.Calendar;
 import java.util.Date;
 import java.util.GregorianCalendar;

 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.DisposeEvent;
 import org.eclipse.swt.events.DisposeListener;
 import org.eclipse.swt.events.FocusEvent;
 import org.eclipse.swt.events.FocusListener;
 import org.eclipse.swt.events.KeyAdapter;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.events.KeyListener;
 import org.eclipse.swt.events.MouseAdapter;
 import org.eclipse.swt.events.MouseEvent;
 import org.eclipse.swt.events.MouseListener;
 import org.eclipse.swt.events.PaintEvent;
 import org.eclipse.swt.events.PaintListener;
 import org.eclipse.swt.events.TraverseEvent;
 import org.eclipse.swt.events.TraverseListener;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.graphics.FontMetrics;
 import org.eclipse.swt.graphics.GC;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.RGB;
 import org.eclipse.swt.widgets.Canvas;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Display;

 /**
  * Represents a particular range in time in a single day.
  *
  * @since 3.2
  */
 public class TimeSlot extends Canvas {

 	private static final int FOCUS_LINE_WIDTH = 2;

 	private boolean focusControl = false;

 	private final Color WHITE;
 	private final Color CELL_BACKGROUND_LIGHT;
 	private final Color CELL_BACKGROUND_WHITE;
 	private final Color CELL_BORDER_EMPHASIZED;
 	private final Color CELL_BORDER_LIGHT;
 	private final Color TIME_BAR_COLOR;
 	private final Color FOCUS_RUBBERBAND;

 	/**
 	 * Width of the bar between events
 	 */
 	public static final int TIME_BAR_WIDTH = 3;

 	/**
 	 * Constructor EmptyTablePlaceholder. Construct an EmptyTablePlaceholder
 	 * control.
 	 *
 	 * @param parent
 	 *            The parent control
 	 * @param style
 	 *            Style bits. These are the same as what Canvas accepts.
 	 */
 	public TimeSlot(Composite parent, int style) {
 		super(parent, style);

 		addTraverseListener(traverseListener);
 		addFocusListener(focusListener);
 		addPaintListener(paintListener);
 		addDisposeListener(disposeListener);
 		addKeyListener(keyListener);
 		addMouseListener(mouseListener);

 		Display display = Display.getCurrent();

 		WHITE = display.getSystemColor(SWT.COLOR_WHITE);

 		CELL_BACKGROUND_WHITE = display.getSystemColor(SWT.COLOR_WHITE);
 		CELL_BORDER_EMPHASIZED = display.getSystemColor(SWT.COLOR_LIST_SELECTION);
 		CELL_BACKGROUND_LIGHT = new Color(display, new RGB(248, 248, 248));
 		CELL_BORDER_LIGHT = new Color(display, saturate(CELL_BORDER_EMPHASIZED.getRGB(), .2f));
 		TIME_BAR_COLOR = new Color(display, saturate(CELL_BORDER_EMPHASIZED.getRGB(), .1f));
 		FOCUS_RUBBERBAND = new Color(display, lighten(saturate(display.getSystemColor(SWT.COLOR_TITLE_BACKGROUND).getRGB(), .85f), -.333f));

 		setBackground(CELL_BACKGROUND_LIGHT);
 	}

 	/**
 	 * Sets the color's saturation to the specified value.
 	 *
 	 * @param color The RGB of the color
 	 * @param saturation the new saturation (between 0 and 1)
 	 * @return a Color that is saturated by the specified amount
 	 */
 	private RGB saturate(RGB color, float saturation) {
 		float[] hsb = color.getHSB();
 		return new RGB(hsb[0], saturation, hsb[2]);
 	}

 	/**
 	 * @param color The RGB of the color
 	 * @param amount The amount to lighten as a percentage expresssed as a float between -1 and 1.
 	 * @return The new RGB that is lightened by the specified amount
 	 */
 	private RGB lighten(RGB color, float amount) {
 		float[] hsb = color.getHSB();
 		float b = hsb[2] + hsb[2] * amount;
 		if (b < 0) b=0;
 		if (b > 1) b=1;
 		return new RGB(hsb[0], hsb[1], b);
 	}


 	/**
 	 * Make sure we remove our listeners...
 	 */
 	private DisposeListener disposeListener = new DisposeListener() {
 		public void widgetDisposed(DisposeEvent e) {
 			removeTraverseListener(traverseListener);
 			removeFocusListener(focusListener);
 			removePaintListener(paintListener);
 			removeMouseListener(mouseListener);
 			removeKeyListener(keyListener);
 			removeDisposeListener(disposeListener);

 			// Dispose colors here
 			CELL_BACKGROUND_LIGHT.dispose();
 			CELL_BORDER_LIGHT.dispose();
 			TIME_BAR_COLOR.dispose();
 			FOCUS_RUBBERBAND.dispose();
 		}
 	};

 	private KeyListener keyListener = new KeyAdapter() {
 		public void keyPressed(KeyEvent e) {
 			switch (e.keyCode) {
 			case SWT.ARROW_LEFT:
 				traverse(SWT.TRAVERSE_TAB_PREVIOUS);
 				return;
 			case SWT.ARROW_RIGHT:
 				traverse(SWT.TRAVERSE_TAB_NEXT);
 				return;
 			}
 		}
 	};

 	private Point preferredSize = new Point(-1, -1);

 	public Point computeSize(int wHint, int hHint, boolean changed) {
 		if (preferredSize.x == -1 || changed) {
 			preferredSize.x = getSize().x;
 			Display display = Display.getCurrent();
 			GC gc = new GC(display);
 			try {
 				Font font = display.getSystemFont();
 				gc.setFont(font);
 				FontMetrics fm = gc.getFontMetrics();
 				preferredSize.y = fm.getHeight();
 			} finally {
 				gc.dispose();
 			}
 		}
 		return preferredSize;
 	}

 	/**
 	 * Paint the control.
 	 */
 	private PaintListener paintListener = new PaintListener() {
 		public void paintControl(PaintEvent e) {
 			GC gc = e.gc;
 			Color oldForeground = gc.getForeground();
 			Color oldBackground = gc.getBackground();
 			Point controlSize = getSize();

 			// Draw basic background here
 			try {
 				// Draw "time bar" on left side
 				gc.setBackground(WHITE);
 				gc.setForeground(WHITE);
 				gc.fillRectangle(0, 0, TIME_BAR_WIDTH, controlSize.y);
 				gc.setForeground(CELL_BORDER_LIGHT);
 				int lineStyle = gc.getLineStyle();
 				gc.setLineStyle(SWT.LINE_DOT);
 				gc.drawLine(TIME_BAR_WIDTH + 1, 0, TIME_BAR_WIDTH + 1,
 						controlSize.y);
 				gc.setLineStyle(lineStyle);
 				gc.setForeground(TIME_BAR_COLOR);
 				gc.drawLine(controlSize.x - 1, 0, controlSize.x - 1,
 						controlSize.y);
 				if (isMinutesAfterHour(0)) {
 					gc.setForeground(CELL_BORDER_EMPHASIZED);
 				} else {
 					gc.setForeground(CELL_BORDER_LIGHT);
 				}
 //				gc.drawLine(TIME_BAR_WIDTH + 2, 0, controlSize.x - 2, 0);
 				if (isMinutesAfterHour(0) || isMinutesAfterHour(30) && !isAllDay()) {
 					gc.drawLine(0, 0, controlSize.x, 0);
 				}
 			} finally {
 				gc.setBackground(oldBackground);
 				gc.setForeground(oldForeground);
 			}

 			// Draw focus rubberband if we're focused
 			int oldLineStyle = gc.getLineStyle();
 			int oldLineWidth = gc.getLineWidth();
 			try {
 				if (focusControl) {
 					gc.setLineStyle(SWT.LINE_DASH);
 					gc.setLineWidth(FOCUS_LINE_WIDTH);
 					gc.setForeground(FOCUS_RUBBERBAND);
 					Point parentSize = getSize();
 					gc.drawRectangle(FOCUS_LINE_WIDTH,
 							FOCUS_LINE_WIDTH, parentSize.x - 4,
 							parentSize.y - 3);
 				}

 				gc.setForeground(CELL_BACKGROUND_LIGHT);
 			} finally {
 				gc.setForeground(oldForeground);
 				gc.setLineStyle(oldLineStyle);
 				gc.setLineWidth(oldLineWidth);
 			}
 		}
 	};

 	/**
 	 * When we gain/lose focus, redraw ourselves appropriately
 	 */
 	private FocusListener focusListener = new FocusListener() {
 		public void focusGained(FocusEvent e) {
 			focusControl = true;
 			redraw();
 		}

 		public void focusLost(FocusEvent e) {
 			focusControl = false;
 			redraw();
 		}
 	};

 	/**
 	 * Permit focus events via keyboard.
 	 */
 	private TraverseListener traverseListener = new TraverseListener() {
 		public void keyTraversed(TraverseEvent e) {
 			// NOOP: this just lets us receive focus from SWT
 		}
 	};

 	private MouseListener mouseListener = new MouseAdapter() {
 		public void mouseDown(MouseEvent e) {
 			setFocus();
 		}
 	};

 	/**
 	 * @param minute The minute to check
 	 *
 	 * @return true if the time falls on the specified minute of the hour.
 	 * false otherwise.
 	 */
 	public boolean isMinutesAfterHour(int minute) {
 		Calendar calendar = new GregorianCalendar();
 		calendar.setTime(time);
 		return calendar.get(Calendar.MINUTE) == minute;
 	}

 	private boolean allDay = false;

 	/**
 	 * @param isAllDayEvent
 	 */
 	public void setAllDay(boolean isAllDayEvent) {
 		this.allDay = isAllDayEvent;
 		if (isAllDayEvent) {
 			setBackground(CELL_BACKGROUND_WHITE);
 		} else {
 			setBackground(CELL_BACKGROUND_LIGHT);
 		}
 	}

 	/**
 	 * @return Returns the allDay.
 	 */
 	public boolean isAllDay() {
 		return allDay;
 	}

 	private Date time = new Date();

 	/**
 	 * @param currentTime
 	 */
 	public void setTime(Date currentTime) {
 		this.time = currentTime;
 		redraw();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2006 The Pampered Chef 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:
	* The Pampered Chef - initial API and implementation
	******************************************************************************/
	package org.eclipse.jface.examples.databinding.compositetable.day.internal;

	import java.util.Calendar;
	import java.util.Date;
	import java.util.GregorianCalendar;

	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.DisposeEvent;
	import org.eclipse.swt.events.DisposeListener;
	import org.eclipse.swt.events.FocusEvent;
	import org.eclipse.swt.events.FocusListener;
	import org.eclipse.swt.events.KeyAdapter;
	import org.eclipse.swt.events.KeyEvent;
	import org.eclipse.swt.events.KeyListener;
	import org.eclipse.swt.events.MouseAdapter;
	import org.eclipse.swt.events.MouseEvent;
	import org.eclipse.swt.events.MouseListener;
	import org.eclipse.swt.events.PaintEvent;
	import org.eclipse.swt.events.PaintListener;
	import org.eclipse.swt.events.TraverseEvent;
	import org.eclipse.swt.events.TraverseListener;
	import org.eclipse.swt.graphics.Color;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.graphics.FontMetrics;
	import org.eclipse.swt.graphics.GC;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.graphics.RGB;
	import org.eclipse.swt.widgets.Canvas;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Display;

	/**
	* Represents a particular range in time in a single day.
	*
	* @since 3.2
	*/
	public class TimeSlot extends Canvas {

	private static final int FOCUS_LINE_WIDTH = 2;

	private boolean focusControl = false;

	private final Color WHITE;
	private final Color CELL_BACKGROUND_LIGHT;
	private final Color CELL_BACKGROUND_WHITE;
	private final Color CELL_BORDER_EMPHASIZED;
	private final Color CELL_BORDER_LIGHT;
	private final Color TIME_BAR_COLOR;
	private final Color FOCUS_RUBBERBAND;

	/**
	* Width of the bar between events
	*/
	public static final int TIME_BAR_WIDTH = 3;

	/**
	* Constructor EmptyTablePlaceholder. Construct an EmptyTablePlaceholder
	* control.
	*
	* @param parent
	* The parent control
	* @param style
	* Style bits. These are the same as what Canvas accepts.
	*/
	public TimeSlot(Composite parent, int style) {
	super(parent, style);

	addTraverseListener(traverseListener);
	addFocusListener(focusListener);
	addPaintListener(paintListener);
	addDisposeListener(disposeListener);
	addKeyListener(keyListener);
	addMouseListener(mouseListener);

	Display display = Display.getCurrent();

	WHITE = display.getSystemColor(SWT.COLOR_WHITE);

	CELL_BACKGROUND_WHITE = display.getSystemColor(SWT.COLOR_WHITE);
	CELL_BORDER_EMPHASIZED = display.getSystemColor(SWT.COLOR_LIST_SELECTION);
	CELL_BACKGROUND_LIGHT = new Color(display, new RGB(248, 248, 248));
	CELL_BORDER_LIGHT = new Color(display, saturate(CELL_BORDER_EMPHASIZED.getRGB(), .2f));
	TIME_BAR_COLOR = new Color(display, saturate(CELL_BORDER_EMPHASIZED.getRGB(), .1f));
	FOCUS_RUBBERBAND = new Color(display, lighten(saturate(display.getSystemColor(SWT.COLOR_TITLE_BACKGROUND).getRGB(), .85f), -.333f));

	setBackground(CELL_BACKGROUND_LIGHT);
	}

	/**
	* Sets the color's saturation to the specified value.
	*
	* @param color The RGB of the color
	* @param saturation the new saturation (between 0 and 1)
	* @return a Color that is saturated by the specified amount
	*/
	private RGB saturate(RGB color, float saturation) {
	float[] hsb = color.getHSB();
	return new RGB(hsb[0], saturation, hsb[2]);
	}

	/**
	* @param color The RGB of the color
	* @param amount The amount to lighten as a percentage expresssed as a float between -1 and 1.
	* @return The new RGB that is lightened by the specified amount
	*/
	private RGB lighten(RGB color, float amount) {
	float[] hsb = color.getHSB();
	float b = hsb[2] + hsb[2] * amount;
	if (b < 0) b=0;
	if (b > 1) b=1;
	return new RGB(hsb[0], hsb[1], b);
	}


	/**
	* Make sure we remove our listeners...
	*/
	private DisposeListener disposeListener = new DisposeListener() {
	public void widgetDisposed(DisposeEvent e) {
	removeTraverseListener(traverseListener);
	removeFocusListener(focusListener);
	removePaintListener(paintListener);
	removeMouseListener(mouseListener);
	removeKeyListener(keyListener);
	removeDisposeListener(disposeListener);

	// Dispose colors here
	CELL_BACKGROUND_LIGHT.dispose();
	CELL_BORDER_LIGHT.dispose();
	TIME_BAR_COLOR.dispose();
	FOCUS_RUBBERBAND.dispose();
	}
	};

	private KeyListener keyListener = new KeyAdapter() {
	public void keyPressed(KeyEvent e) {
	switch (e.keyCode) {
	case SWT.ARROW_LEFT:
	traverse(SWT.TRAVERSE_TAB_PREVIOUS);
	return;
	case SWT.ARROW_RIGHT:
	traverse(SWT.TRAVERSE_TAB_NEXT);
	return;
	}
	}
	};

	private Point preferredSize = new Point(-1, -1);

	public Point computeSize(int wHint, int hHint, boolean changed) {
	if (preferredSize.x == -1 \|\| changed) {
	preferredSize.x = getSize().x;
	Display display = Display.getCurrent();
	GC gc = new GC(display);
	try {
	Font font = display.getSystemFont();
	gc.setFont(font);
	FontMetrics fm = gc.getFontMetrics();
	preferredSize.y = fm.getHeight();
	} finally {
	gc.dispose();
	}
	}
	return preferredSize;
	}

	/**
	* Paint the control.
	*/
	private PaintListener paintListener = new PaintListener() {
	public void paintControl(PaintEvent e) {
	GC gc = e.gc;
	Color oldForeground = gc.getForeground();
	Color oldBackground = gc.getBackground();
	Point controlSize = getSize();

	// Draw basic background here
	try {
	// Draw "time bar" on left side
	gc.setBackground(WHITE);
	gc.setForeground(WHITE);
	gc.fillRectangle(0, 0, TIME_BAR_WIDTH, controlSize.y);
	gc.setForeground(CELL_BORDER_LIGHT);
	int lineStyle = gc.getLineStyle();
	gc.setLineStyle(SWT.LINE_DOT);
	gc.drawLine(TIME_BAR_WIDTH + 1, 0, TIME_BAR_WIDTH + 1,
	controlSize.y);
	gc.setLineStyle(lineStyle);
	gc.setForeground(TIME_BAR_COLOR);
	gc.drawLine(controlSize.x - 1, 0, controlSize.x - 1,
	controlSize.y);
	if (isMinutesAfterHour(0)) {
	gc.setForeground(CELL_BORDER_EMPHASIZED);
	} else {
	gc.setForeground(CELL_BORDER_LIGHT);
	}
	// gc.drawLine(TIME_BAR_WIDTH + 2, 0, controlSize.x - 2, 0);
	if (isMinutesAfterHour(0) \|\| isMinutesAfterHour(30) && !isAllDay()) {
	gc.drawLine(0, 0, controlSize.x, 0);
	}
	} finally {
	gc.setBackground(oldBackground);
	gc.setForeground(oldForeground);
	}

	// Draw focus rubberband if we're focused
	int oldLineStyle = gc.getLineStyle();
	int oldLineWidth = gc.getLineWidth();
	try {
	if (focusControl) {
	gc.setLineStyle(SWT.LINE_DASH);
	gc.setLineWidth(FOCUS_LINE_WIDTH);
	gc.setForeground(FOCUS_RUBBERBAND);
	Point parentSize = getSize();
	gc.drawRectangle(FOCUS_LINE_WIDTH,
	FOCUS_LINE_WIDTH, parentSize.x - 4,
	parentSize.y - 3);
	}

	gc.setForeground(CELL_BACKGROUND_LIGHT);
	} finally {
	gc.setForeground(oldForeground);
	gc.setLineStyle(oldLineStyle);
	gc.setLineWidth(oldLineWidth);
	}
	}
	};

	/**
	* When we gain/lose focus, redraw ourselves appropriately
	*/
	private FocusListener focusListener = new FocusListener() {
	public void focusGained(FocusEvent e) {
	focusControl = true;
	redraw();
	}

	public void focusLost(FocusEvent e) {
	focusControl = false;
	redraw();
	}
	};

	/**
	* Permit focus events via keyboard.
	*/
	private TraverseListener traverseListener = new TraverseListener() {
	public void keyTraversed(TraverseEvent e) {
	// NOOP: this just lets us receive focus from SWT
	}
	};

	private MouseListener mouseListener = new MouseAdapter() {
	public void mouseDown(MouseEvent e) {
	setFocus();
	}
	};

	/**
	* @param minute The minute to check
	*
	* @return true if the time falls on the specified minute of the hour.
	* false otherwise.
	*/
	public boolean isMinutesAfterHour(int minute) {
	Calendar calendar = new GregorianCalendar();
	calendar.setTime(time);
	return calendar.get(Calendar.MINUTE) == minute;
	}

	private boolean allDay = false;

	/**
	* @param isAllDayEvent
	*/
	public void setAllDay(boolean isAllDayEvent) {
	this.allDay = isAllDayEvent;
	if (isAllDayEvent) {
	setBackground(CELL_BACKGROUND_WHITE);
	} else {
	setBackground(CELL_BACKGROUND_LIGHT);
	}
	}

	/**
	* @return Returns the allDay.
	*/
	public boolean isAllDay() {
	return allDay;
	}

	private Date time = new Date();

	/**
	* @param currentTime
	*/
	public void setTime(Date currentTime) {
	this.time = currentTime;
	redraw();
	}
	}