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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Scale.java')
| -rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Scale.java | 372 |
1 files changed, 0 insertions, 372 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Scale.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Scale.java deleted file mode 100644 index 2fe42efb04..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Scale.java +++ /dev/null @@ -1,372 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2006 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.widgets; - - -import org.eclipse.swt.*; -import org.eclipse.swt.internal.gtk.*; -import org.eclipse.swt.graphics.*; -import org.eclipse.swt.events.*; - -/** - * Instances of the receiver represent a selectable user - * interface object that present a range of continuous - * numeric values. - * <dl> - * <dt><b>Styles:</b></dt> - * <dd>HORIZONTAL, VERTICAL</dd> - * <dt><b>Events:</b></dt> - * <dd>Selection</dd> - * </dl> - * <p> - * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified. - * </p><p> - * <p> - * IMPORTANT: This class is intended to be subclassed <em>only</em> - * within the SWT implementation. - * </p> - */ -public class Scale extends Control { - -/** - * Constructs a new instance of this class given its parent - * and a style value describing its behavior and appearance. - * <p> - * The style value is either one of the style constants defined in - * class <code>SWT</code> which is applicable to instances of this - * class, or must be built by <em>bitwise OR</em>'ing together - * (that is, using the <code>int</code> "|" operator) two or more - * of those <code>SWT</code> style constants. The class description - * lists the style constants that are applicable to the class. - * Style bits are also inherited from superclasses. - * </p> - * - * @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 <ul> - * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> - * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> - * </ul> - * - * @see SWT#HORIZONTAL - * @see SWT#VERTICAL - * @see Widget#checkSubclass - * @see Widget#getStyle - */ -public Scale (Composite parent, int style) { - super (parent, checkStyle (style)); -} - -/** - * Adds the listener to the collection of listeners who will - * be notified when the receiver's value changes, by sending - * it one of the messages defined in the <code>SelectionListener</code> - * interface. - * <p> - * <code>widgetSelected</code> is called when the control's value changes. - * <code>widgetDefaultSelected</code> is not called. - * </p> - * - * @param listener the listener which should be notified - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see SelectionListener - * @see #removeSelectionListener - */ -public void addSelectionListener (SelectionListener listener) { - checkWidget (); - if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); - TypedListener typedListener = new TypedListener (listener); - addListener (SWT.Selection,typedListener); - addListener (SWT.DefaultSelection,typedListener); -} - -static int checkStyle (int style) { - return checkBits (style, SWT.HORIZONTAL, SWT.VERTICAL, 0, 0, 0, 0); -} - -public Point computeSize (int wHint, int hHint, boolean changed) { - checkWidget(); - if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0; - if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0; - Point size = computeNativeSize(handle, wHint, hHint, changed); - if ((style & SWT.HORIZONTAL) != 0) { - if (wHint == SWT.DEFAULT) size.x = 2 * size.x; - } else { - if (hHint == SWT.DEFAULT) size.y = 2 * size.y; - } - return size; -} - -void createHandle (int index) { - state |= HANDLE | THEME_BACKGROUND; - fixedHandle = OS.g_object_new (display.gtk_fixed_get_type (), 0); - if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES); - OS.gtk_fixed_set_has_window (fixedHandle, true); - int /*long*/ hAdjustment = OS.gtk_adjustment_new (0, 0, 100, 1, 10, 0); - if (hAdjustment == 0) error (SWT.ERROR_NO_HANDLES); - if ((style & SWT.HORIZONTAL) != 0) { - handle = OS.gtk_hscale_new (hAdjustment); - } else { - handle = OS.gtk_vscale_new (hAdjustment); - } - if (handle == 0) error (SWT.ERROR_NO_HANDLES); - OS.gtk_container_add (fixedHandle, handle); - OS.gtk_scale_set_digits (handle, 0); - OS.gtk_scale_set_draw_value (handle, false); -} - -void hookEvents () { - super.hookEvents (); - OS.g_signal_connect_closure (handle, OS.value_changed, display.closures [VALUE_CHANGED], false); -} - -/** - * Returns the amount that the receiver's value will be - * modified by when the up/down (or right/left) arrows - * are pressed. - * - * @return the increment - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public int getIncrement () { - checkWidget (); - int /*long*/ hAdjustment = OS.gtk_range_get_adjustment (handle); - GtkAdjustment adjustment = new GtkAdjustment (); - OS.memmove (adjustment, hAdjustment); - return (int) adjustment.step_increment; -} - -/** - * Returns the maximum value which the receiver will allow. - * - * @return the maximum - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public int getMaximum () { - checkWidget (); - int /*long*/ hAdjustment = OS.gtk_range_get_adjustment (handle); - GtkAdjustment adjustment = new GtkAdjustment (); - OS.memmove (adjustment, hAdjustment); - return (int) adjustment.upper; -} - -/** - * Returns the minimum value which the receiver will allow. - * - * @return the minimum - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public int getMinimum () { - checkWidget (); - int /*long*/ hAdjustment = OS.gtk_range_get_adjustment (handle); - GtkAdjustment adjustment = new GtkAdjustment (); - OS.memmove (adjustment, hAdjustment); - return (int) adjustment.lower; -} - -/** - * Returns the amount that the receiver's value will be - * modified by when the page increment/decrement areas - * are selected. - * - * @return the page increment - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public int getPageIncrement () { - checkWidget (); - int /*long*/ hAdjustment = OS.gtk_range_get_adjustment (handle); - GtkAdjustment adjustment = new GtkAdjustment (); - OS.memmove (adjustment, hAdjustment); - return (int) adjustment.page_increment; -} - -/** - * Returns the 'selection', which is the receiver's position. - * - * @return the selection - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public int getSelection () { - checkWidget (); - int /*long*/ hAdjustment = OS.gtk_range_get_adjustment (handle); - GtkAdjustment adjustment = new GtkAdjustment (); - OS.memmove (adjustment, hAdjustment); - return (int) adjustment.value; -} - -int /*long*/ gtk_value_changed (int /*long*/ adjustment) { - postEvent (SWT.Selection); - return 0; -} - -/** - * Removes the listener from the collection of listeners who will - * be notified when the receiver's value changes. - * - * @param listener the listener which should no longer be notified - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see SelectionListener - * @see #addSelectionListener - */ -public void removeSelectionListener (SelectionListener listener) { - checkWidget (); - if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); - if (eventTable == null) return; - eventTable.unhook (SWT.Selection, listener); - eventTable.unhook (SWT.DefaultSelection,listener); -} - -/** - * Sets the amount that the receiver's value will be - * modified by when the up/down (or right/left) arrows - * are pressed to the argument, which must be at least - * one. - * - * @param increment the new increment (must be greater than zero) - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void setIncrement (int value) { - checkWidget (); - if (value < 1) return; - OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); - OS.gtk_range_set_increments (handle, value, getPageIncrement ()); - OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); -} - -/** - * Sets the maximum value that the receiver will allow. This new - * value will be ignored if it is not greater than the receiver's current - * minimum value. If the new maximum is applied then the receiver's - * selection value will be adjusted if necessary to fall within its new range. - * - * @param value the new maximum, which must be greater than the current minimum - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void setMaximum (int value) { - checkWidget (); - int minimum = getMinimum(); - if (value <= minimum) return; - OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); - OS.gtk_range_set_range (handle, minimum, value); - OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); -} - -/** - * Sets the minimum value that the receiver will allow. This new - * value will be ignored if it is negative or is not less than the receiver's - * current maximum value. If the new minimum is applied then the receiver's - * selection value will be adjusted if necessary to fall within its new range. - * - * @param value the new minimum, which must be nonnegative and less than the current maximum - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void setMinimum (int value) { - checkWidget (); - if (value < 0) return; - int maximum = getMaximum (); - if (value >= maximum) return; - OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); - OS.gtk_range_set_range (handle, value, maximum); - OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); -} - -/** - * Sets the amount that the receiver's value will be - * modified by when the page increment/decrement areas - * are selected to the argument, which must be at least - * one. - * - * @param pageIncrement the page increment (must be greater than zero) - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void setPageIncrement (int value) { - checkWidget (); - if (value < 1) return; - OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); - OS.gtk_range_set_increments (handle, getIncrement (), value); - OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); -} - -/** - * Sets the 'selection', which is the receiver's value, - * to the argument which must be greater than or equal to zero. - * - * @param value the new selection (must be zero or greater) - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void setSelection (int value) { - checkWidget (); - OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); - OS.gtk_range_set_value (handle, value); - OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); -} - -} |