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changeset 61:1d461bec7afb

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Scale
author Frank Benoit <benoit@tionex.de>
date Sat, 12 Jan 2008 13:23:38 +0100
parents 6537a52fde85
children a4880dcb4139
files dwt/internal/gtk/OS.d dwt/widgets/Scale.d todo.txt
diffstat 3 files changed, 369 insertions(+), 4 deletions(-) [+]
line wrap: on
line diff
--- a/dwt/internal/gtk/OS.d	Sat Jan 12 11:16:09 2008 +0100
+++ b/dwt/internal/gtk/OS.d	Sat Jan 12 13:23:38 2008 +0100
@@ -150,8 +150,8 @@
 public alias dwt.internal.c.gtk.GtkEditable GtkEditable;
 public alias dwt.internal.c.gtk.GtkTextView GtkTextView;
 public alias dwt.internal.c.gtk.GtkTextBuffer GtkTextBuffer;
-
-
+public alias dwt.internal.c.gtk.GtkScale GtkScale;
+public alias dwt.internal.c.gtk.GtkRange GtkRange;
 
 public alias dwt.internal.c.Xlib.XErrorEvent XErrorEvent;
 public alias dwt.internal.c.Xlib.XExposeEvent XExposeEvent;
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/widgets/Scale.d	Sat Jan 12 13:23:38 2008 +0100
@@ -0,0 +1,365 @@
+/*******************************************************************************
+ * 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
+ *******************************************************************************/
+module dwt.widgets.Scale;
+
+
+import dwt.widgets.Control;
+import dwt.widgets.Composite;
+import dwt.widgets.TypedListener;
+import dwt.SWT;
+import dwt.internal.gtk.OS;
+import dwt.graphics.Point;
+import dwt.events.SelectionListener;
+
+/**
+ * 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 : 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 this (Composite parent, int style) {
+    super (parent, checkStyle (style));
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when the user changes the receiver's value, by sending
+ * it one of the messages defined in the <code>SelectionListener</code>
+ * interface.
+ * <p>
+ * <code>widgetSelected</code> is called when the user changes the receiver's value.
+ * <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 is 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, bool changed) {
+    checkWidget();
+    if (wHint !is SWT.DEFAULT && wHint < 0) wHint = 0;
+    if (hHint !is SWT.DEFAULT && hHint < 0) hHint = 0;
+    Point size = computeNativeSize(handle, wHint, hHint, changed);
+    if ((style & SWT.HORIZONTAL) !is 0) {
+        if (wHint is SWT.DEFAULT) size.x = 2 * size.x;
+    } else {
+        if (hHint is SWT.DEFAULT) size.y = 2 * size.y;
+    }
+    return size;
+}
+
+void createHandle (int index) {
+    state |= HANDLE | THEME_BACKGROUND;
+    fixedHandle = cast(GtkWidget*)OS.g_object_new (display.gtk_fixed_get_type (), null);
+    if (fixedHandle is null) error (SWT.ERROR_NO_HANDLES);
+    OS.gtk_fixed_set_has_window (cast(GtkFixed*)fixedHandle, true);
+    auto hAdjustment = OS.gtk_adjustment_new (0, 0, 100, 1, 10, 0);
+    if (hAdjustment is null) error (SWT.ERROR_NO_HANDLES);
+    if ((style & SWT.HORIZONTAL) !is 0) {
+        handle = cast(GtkWidget*)OS.gtk_hscale_new (cast(GtkAdjustment*)hAdjustment);
+    } else {
+        handle = cast(GtkWidget*)OS.gtk_vscale_new (cast(GtkAdjustment*)hAdjustment);
+    }
+    if (handle is null) error (SWT.ERROR_NO_HANDLES);
+    OS.gtk_container_add (cast(GtkContainer*)fixedHandle, handle);
+    OS.gtk_scale_set_digits (cast(GtkScale*)handle, 0);
+    OS.gtk_scale_set_draw_value (cast(GtkScale*)handle, false);
+}
+
+void hookEvents () {
+    super.hookEvents ();
+    OS.g_signal_connect_closure (handle, OS.value_changed.ptr, 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 ();
+    auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle);
+    return cast(int) hAdjustment.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 ();
+    auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle);
+    return cast(int) hAdjustment.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 ();
+    auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle);
+    return cast(int) hAdjustment.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 ();
+    auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle);
+    return cast(int) hAdjustment.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 ();
+    auto hAdjustment = OS.gtk_range_get_adjustment (cast(GtkRange*)handle);
+    return cast(int) hAdjustment.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 user changes the receiver's value.
+ *
+ * @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 is null) error (SWT.ERROR_NULL_ARGUMENT);
+    if (eventTable is 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, null, null, cast(void*)VALUE_CHANGED);
+    OS.gtk_range_set_increments (cast(GtkRange*)handle, value, getPageIncrement ());
+    OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, cast(void*)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, null, null, cast(void*)VALUE_CHANGED);
+    OS.gtk_range_set_range (cast(GtkRange*)handle, minimum, value);
+    OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, cast(void*)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, null, null, cast(void*)VALUE_CHANGED);
+    OS.gtk_range_set_range (cast(GtkRange*)handle, value, maximum);
+    OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, cast(void*)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, null, null, cast(void*)VALUE_CHANGED);
+    OS.gtk_range_set_increments (cast(GtkRange*)handle, getIncrement (), value);
+    OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, cast(void*)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, null, null, cast(void*)VALUE_CHANGED);
+    OS.gtk_range_set_value (cast(GtkRange*)handle, value);
+    OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, cast(void*) VALUE_CHANGED);
+}
+
+}
--- a/todo.txt	Sat Jan 12 11:16:09 2008 +0100
+++ b/todo.txt	Sat Jan 12 13:23:38 2008 +0100
@@ -117,7 +117,7 @@
 widgets/ProgressBar
 widgets/RunnableLock                    // OKs
 widgets/Sash
-widgets/Scale
+widgets/Scale                           // OKs
 widgets/Scrollable                      // OKs
 widgets/ScrollBar                       // OKs
 widgets/Shell                           // OKs
@@ -129,7 +129,7 @@
 widgets/Table
 widgets/TableColumn
 widgets/TableItem
-widgets/Text
+widgets/Text                            // OKs
 widgets/ToolBar
 widgets/ToolItem
 widgets/ToolTip                         // OKs