diff --git a/widgets/nebulaslider/org.eclipse.nebula.widgets.nebulaslider/src/org/eclipse/nebula/widgets/opal/nebulaslider/NebulaSlider.java b/widgets/nebulaslider/org.eclipse.nebula.widgets.nebulaslider/src/org/eclipse/nebula/widgets/opal/nebulaslider/NebulaSlider.java index ce61d6c50..fb80d3e01 100644 --- a/widgets/nebulaslider/org.eclipse.nebula.widgets.nebulaslider/src/org/eclipse/nebula/widgets/opal/nebulaslider/NebulaSlider.java +++ b/widgets/nebulaslider/org.eclipse.nebula.widgets.nebulaslider/src/org/eclipse/nebula/widgets/opal/nebulaslider/NebulaSlider.java @@ -519,525 +519,3 @@ public void setRenderer(final NebulaSliderGraphicConfiguration renderer) { } } -======= -/******************************************************************************* - * Copyright (c) 2018-2024 Laurent CARON - * This program and the accompanying materials - * are made available under the terms of the Eclipse Public License 2.0 - * which accompanies this distribution, and is available at - * https://www.eclipse.org/legal/epl-2.0/ - * - * SPDX-License-Identifier: EPL-2.0 - * - * Contributors: Laurent CARON (laurent.caron at gmail dot com) - Initial - * implementation and API - *******************************************************************************/ -package org.eclipse.nebula.widgets.opal.nebulaslider; - -import java.util.function.IntFunction; - -import org.eclipse.nebula.widgets.opal.commons.SelectionListenerUtil; -import org.eclipse.swt.SWT; -import org.eclipse.swt.SWTException; -import org.eclipse.swt.events.SelectionEvent; -import org.eclipse.swt.events.SelectionListener; -import org.eclipse.swt.graphics.Color; -import org.eclipse.swt.graphics.GC; -import org.eclipse.swt.graphics.Point; -import org.eclipse.swt.graphics.Rectangle; -import org.eclipse.swt.widgets.Canvas; -import org.eclipse.swt.widgets.Composite; -import org.eclipse.swt.widgets.Widget; - -/** - * Instances of this class are selectable user interface - * objects that represent a range of positive, numeric values. - * It is like an horizontal slider - *
- *
Styles:
- *
(None)
- *
Events:
- *
Selection
- *
- */ -public class NebulaSlider extends Canvas { - - private NebulaSliderGraphicConfiguration renderer; - - private int minimum; - private int maximum; - private int value; - private int xPosition; - private int mouseDeltaX; - - private boolean moving = false; - - private IntFunction format; - - private int movingValue; - - /** - * Constructs a new instance of this class given its parent and a style value - * describing its behavior and appearance. - *

- * The style value is either one of the style constants defined in class - * SWT which is applicable to instances of this class, or must be - * built by bitwise OR'ing together (that is, using the - * int "|" operator) two or more of those SWT style - * constants. The class description lists the style constants that are - * applicable to the class. Style bits are also inherited from superclasses. - *

- * - * @param parent a composite control which will be the parent of the new - * instance (cannot be null) - * @param style the style of control to construct - * - * @exception IllegalArgumentException - * - * @exception SWTException - * - * - * @see Widget#getStyle() - */ - public NebulaSlider(final Composite parent, final int style) { - super(parent, checkStyle(style) | SWT.DOUBLE_BUFFERED); - - renderer = new NebularSliderDefaultConfiguration(this); - - minimum = Integer.MIN_VALUE; - maximum = Integer.MAX_VALUE; - value = 0; - xPosition = -1; - - addPaintListener(e -> { - paintControl(e.gc); - }); - addMouseListeners(); - } - - private static int checkStyle(final int style) { - if ((style & SWT.BORDER) != 0) { - return style & ~SWT.BORDER; - } - return 0; - } - - private void paintControl(final GC gc) { - gc.setAdvanced(true); - gc.setAntialias(SWT.ON); - - if (xPosition < 0) { - // Compute xPosition - xPosition = computeXPosition(); - } - boolean enabled = isEnabled(); - drawBar(gc, enabled); - drawSelectionPart(gc, enabled); - drawSelector(gc, enabled); - } - - private void drawBar(final GC gc, boolean enabled) { - final Rectangle rect = getClientArea(); - gc.setForeground(getColor(renderer.getBarBorderColor(), enabled)); - gc.setBackground(getColor(renderer.getBarInsideColor(), enabled)); - - final int hMargin = renderer.getHorizontalMargin(); - final int selectorWidth = renderer.getSelectorWidth(); - final int barHeight = renderer.getBarHeight(); - - final int x = hMargin + selectorWidth / 2; - final int y = (rect.height - barHeight) / 2; - final int width = rect.width - hMargin * 2 - selectorWidth; - - gc.fillRoundRectangle(x, y, width, barHeight, barHeight, barHeight); - gc.drawRoundRectangle(x, y, width, barHeight, barHeight, barHeight); - } - - private void drawSelectionPart(final GC gc, boolean enabled) { - final Rectangle rect = getClientArea(); - gc.setForeground(getColor(renderer.getBarBorderColor(), enabled)); - gc.setBackground(getColor(renderer.getBarSelectionColor(), enabled)); - - final int barHeight = renderer.getBarHeight(); - - final int x = renderer.getHorizontalMargin() + renderer.getSelectorWidth() / 2; - final int y = (rect.height - barHeight) / 2; - - gc.fillRoundRectangle(x, y, xPosition, barHeight, barHeight, barHeight); - gc.drawRoundRectangle(x, y, xPosition, barHeight, barHeight, barHeight); - } - - private int computeXPosition() { - final int originalWidth = getClientArea().width - renderer.getHorizontalMargin() * 2 - renderer.getSelectorWidth(); - final float coeff = value * 1f / (maximum - minimum); - final int position = (int) (coeff * originalWidth); - return position; - } - - private void drawSelector(final GC gc, boolean enabled) { - final Rectangle rect = getClientArea(); - gc.setForeground(getColor(renderer.getSelectorColorBorder(), enabled)); - gc.setBackground(getColor(renderer.getSelectorColor(), enabled)); - - final int hMargin = renderer.getHorizontalMargin(); - - final int selectorWidth = renderer.getSelectorWidth(); - final int selectorHeight = renderer.getSelectorHeight(); - - final int y = (rect.height - selectorHeight) / 2; - - // Draw the body - gc.fillRoundRectangle(hMargin + xPosition, y, selectorWidth, selectorHeight, selectorHeight, selectorHeight); - gc.drawRoundRectangle(hMargin + xPosition, y, selectorWidth, selectorHeight, selectorHeight, selectorHeight); - - // Draw the arrows - gc.setForeground(getColor(renderer.getArrowColor(), enabled)); - gc.setLineWidth(renderer.getArrowLineWidth()); - final int baseY = y + selectorHeight / 2; - gc.drawLine(hMargin + xPosition + 10, baseY, hMargin + xPosition + 17, baseY - 7); - gc.drawLine(hMargin + xPosition + 10, baseY, hMargin + xPosition + 17, baseY + 7); - - gc.drawLine(hMargin + xPosition + selectorWidth - 10, baseY, hMargin + xPosition + selectorWidth - 17, baseY - 7); - gc.drawLine(hMargin + xPosition + selectorWidth - 10, baseY, hMargin + xPosition + selectorWidth - 17, baseY + 7); - - // And the value - gc.setForeground(getColor(renderer.getSelectorTextColor(), enabled)); - gc.setFont(renderer.getTextFont()); - final String valueAsString = stringValueOf(value); - final Point textSize = gc.textExtent(valueAsString); - - final int xText = hMargin + xPosition + selectorWidth / 2; - final int yText = y + selectorHeight / 2; - - gc.drawText(valueAsString, xText - textSize.x / 2, yText - textSize.y / 2, true); - } - - @Override - public void setBounds(int x, int y, int width, int height) { - xPosition = -1; - super.setBounds(x, y, width, height); - } - - @Override - public void setEnabled(boolean enabled) { - if(!enabled && moving) { - moving = false; - } - super.setEnabled(enabled); - } - - private Color getColor(Color color, boolean enabled) { - if(enabled) { - return color; - } - // see https://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale - int red = color.getRed(); - int green = color.getGreen(); - int blue = color.getBlue(); - if(red == green && green == blue) { - return color; - } - int g = (int)(0.299 * red + 0.587 * green + 0.114 * blue); - return new Color(g, g, g); - } - - private String stringValueOf(int value) { - if(format != null) { - return format.apply(value); - } - return String.valueOf(value); - } - - /** - * Set the format that should be used to format the given number to a string. - * - * @param format - * the format or null to use the default format. - */ - public void setLabelFormatProvider(IntFunction format) { - checkWidget(); - this.format = format; - } - - public IntFunction getLabelFormatProvider() { - checkWidget(); - return format; - } - - private void addMouseListeners() { - - addListener(SWT.MouseDown, e -> { - if(isEnabled()) { - final int selectorWidth = renderer.getSelectorWidth(); - final int selectorHeight = renderer.getSelectorHeight(); - - final int y = (getClientArea().height - selectorHeight) / 2; - final Rectangle rect = new Rectangle(xPosition + renderer.getHorizontalMargin(), y, selectorWidth, selectorHeight); - if (!rect.contains(e.x, e.y)) { - return; - } - moving = true; - movingValue = value; - mouseDeltaX = xPosition - e.x; - } - }); - - addListener(SWT.MouseUp, e -> { - moving = false; - mouseDeltaX = 0; - if(movingValue != value) { - SelectionListenerUtil.fireDefaultSelectionListeners(this, e); - } - redraw(); - }); - - addListener(SWT.MouseMove, e -> { - if (!moving) { - return; - } - - xPosition = e.x + mouseDeltaX; - if (xPosition < 0) { - xPosition = 0; - } - final int originalWidth = getClientArea().width - renderer.getHorizontalMargin() * 2 - renderer.getSelectorWidth(); - - if (xPosition > originalWidth) { - xPosition = originalWidth; - } - - // Update value - final float ratio = (float) xPosition / originalWidth; - int value = (int)Math.floor(ratio * (maximum - minimum)); - if(this.value != value) { - this.value = value; - SelectionListenerUtil.fireSelectionListeners(this, e); - } - redraw(); - - }); - } - - - - /** - * Adds the listener to the collection of listeners who will be notified when - * the control is selected by the user, by sending it one of the messages - * defined in the SelectionListener interface. - *

- * widgetDefaultSelected is not called. - *

- * - * @param listener the listener which should be notified when the control is - * selected by the user, - * - * @exception IllegalArgumentException - *
    - *
  • ERROR_NULL_ARGUMENT - if the listener is null
    • - *
- * @exception SWTException - *
    - *
  • ERROR_WIDGET_DISPOSED - if the receiver has been - * disposed
    • - *
  • ERROR_THREAD_INVALID_ACCESS - if not called from the - * thread that created the receiver
    • - *
- * - * @see SelectionListener - * @see #removeSelectionListener - * @see SelectionEvent - */ - public void addSelectionListener(final SelectionListener listener) { - checkWidget(); - SelectionListenerUtil.addSelectionListener(this, listener); - } - - /** - * @see org.eclipse.swt.widgets.Control#computeSize(int, int, boolean) - */ - @Override - public Point computeSize(final int wHint, final int hHint, final boolean changed) { - return new Point(Math.max(300, wHint), Math.max(40, hHint)); - } - - /** - * Removes the listener from the collection of listeners who will be notified - * when the control is selected by the user. - * - * @param listener the listener which should no longer be notified - * - * @exception IllegalArgumentException - *
    - *
  • ERROR_NULL_ARGUMENT - if the listener is null
    • - *
- * @exception SWTException - *
    - *
  • ERROR_WIDGET_DISPOSED - if the receiver has been - * disposed
    • - *
  • ERROR_THREAD_INVALID_ACCESS - if not called from the - * thread that created the receiver
    • - *
- * - * @see SelectionListener - * @see #addSelectionListener - */ - public void removeSelectionListener(final SelectionListener listener) { - checkWidget(); - SelectionListenerUtil.removeSelectionListener(this, listener); - } - - // ----------------------- Getters & Setters - - /** - * Returns the minimum value which the receiver will allow. - * - * @return the minimum - * - * @exception SWTException - *
    - *
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    • - *
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    • - *
- */ - public int getMinimum() { - checkWidget(); - return minimum; - } - - /** - * Sets the minimum value. If this value is greater than the maximum, an exception is thrown - * - * @param value the new minimum - * - * @exception SWTException - *
    - *
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    • - *
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    • - *
- */ - public void setMinimum(final int minimum) { - checkWidget(); - if (minimum > maximum) { - SWT.error(SWT.ERROR_INVALID_ARGUMENT, new IllegalArgumentException(String.format("Value %d is greater than the maximum value (%d)", minimum, maximum))); - } - this.minimum = minimum; - redraw(); - update(); - } - - /** - * Returns the maximum value which the receiver will allow. - * - * @return the maximum - * - * @exception SWTException - *
    - *
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    • - *
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    • - *
- */ - public int getMaximum() { - checkWidget(); - return maximum; - } - - /** - * Sets the maximum value. If this value is lower than the minimum, an exception is thrown - * - * @param value the new minimum - * - * @exception SWTException - *
    - *
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    • - *
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    • - *
- */ - public void setMaximum(final int maximum) { - checkWidget(); - if (maximum < minimum) { - SWT.error(SWT.ERROR_INVALID_ARGUMENT, new IllegalArgumentException(String.format("Value %d is lower than the minimum value (%d)", maximum, minimum))); - } - this.maximum = maximum; - redraw(); - update(); - } - - /** - * Returns the receiver's value. - * - * @return the selection - * - * @exception SWTException - *
    - *
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    • - *
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    • - *
- */ - public int getValue() { - checkWidget(); - return value; - } - - /** - * Sets the receiver's value. If the value is lower to minimum or greater than the maximum, an exception is thrown - * - * @param value the new selection (must be zero or greater) - * - * @exception SWTException - *
    - *
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    • - *
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    • - *
- */ - public void setValue(final int value) { - checkWidget(); - if (value < minimum || value > maximum) { - SWT.error(SWT.ERROR_INVALID_ARGUMENT, new IllegalArgumentException(String.format("Value %d is not int the range [%d - %d]", value, minimum, maximum))); - } - this.value = value; - xPosition = -1; - redraw(); - update(); - } - - /** - * Return the current renderer for this widget - * - * @return the renderer - * - * @exception SWTException - *
    - *
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    • - *
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    • - *
- */ - public NebulaSliderGraphicConfiguration getRenderer() { - checkWidget(); - return renderer; - } - - /** - * Sets the renderer for this widget - * - * @param renderer the new renderer - * - * @exception SWTException - *
    - *
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    • - *
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    • - *
- */ - public void setRenderer(final NebulaSliderGraphicConfiguration renderer) { - checkWidget(); - this.renderer = renderer; - redraw(); - } - -}