Mercurial > projects > dwt-linux
view dwt/widgets/Spinner.d @ 259:c0d810de7093
Update SWT 3.4M7 to 3.4
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 29 Jun 2008 14:33:38 +0200 |
parents | 5a30aa9820f3 |
children |
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/******************************************************************************* * Copyright (c) 2000, 2008 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 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwt.widgets.Spinner; import dwt.widgets.Composite; import dwt.widgets.TypedListener; import dwt.widgets.Event; import dwt.widgets.Widget; import dwt.DWT; import dwt.internal.gtk.OS; import dwt.graphics.Point; import dwt.graphics.Rectangle; import dwt.events.SelectionListener; import dwt.events.SelectionEvent; import dwt.events.ModifyListener; import dwt.events.VerifyListener; import tango.util.Convert; import dwt.dwthelper.utils; /** * Instances of this class are selectable user interface * objects that allow the user to enter and modify numeric * values. * <p> * Note that although this class is a subclass of <code>Composite</code>, * it does not make sense to add children to it, or set a layout on it. * </p><p> * <dl> * <dt><b>Styles:</b></dt> * <dd>READ_ONLY, WRAP</dd> * <dt><b>Events:</b></dt> * <dd>Selection, Modify, Verify</dd> * </dl> * </p><p> * IMPORTANT: This class is <em>not</em> intended to be subclassed. * </p> * * @see <a href="http://www.eclipse.org/swt/snippets/#spinner">Spinner snippets</a> * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a> * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> * * @since 3.1 */ public class Spinner : Composite { alias Composite.computeSize computeSize; alias Composite.createHandle createHandle; alias Composite.setBackgroundColor setBackgroundColor; alias Composite.setCursor setCursor; alias Composite.translateTraversal translateTraversal; static final int INNER_BORDER = 2; static final int MIN_ARROW_WIDTH = 6; int lastEventTime = 0; GdkEventKey* gdkEventKey; int fixStart = -1, fixEnd = -1; /** * the operating system limit for the number of characters * that the text field in an instance of this class can hold * * @since 3.4 */ public const static int LIMIT = 0x7FFFFFFF; /** * 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>DWT</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>DWT</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 DWTException <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 DWT#READ_ONLY * @see DWT#WRAP * @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 receiver's text is modified, by sending * it one of the messages defined in the <code>ModifyListener</code> * interface. * * @param listener the listener which should be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception DWTException <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 ModifyListener * @see #removeModifyListener */ public void addModifyListener (ModifyListener listener) { checkWidget (); if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener (listener); addListener (DWT.Modify, typedListener); } /** * 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 <code>SelectionListener</code> * interface. * <p> * <code>widgetSelected</code> is not called for texts. * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed in a single-line text. * </p> * * @param listener the listener which should be notified when the control is selected by the user * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception DWTException <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 * @see SelectionEvent */ public void addSelectionListener(SelectionListener listener) { checkWidget (); if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener(listener); addListener(DWT.Selection,typedListener); addListener(DWT.DefaultSelection,typedListener); } /** * Adds the listener to the collection of listeners who will * be notified when the receiver's text is verified, by sending * it one of the messages defined in the <code>VerifyListener</code> * interface. * * @param listener the listener which should be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception DWTException <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 VerifyListener * @see #removeVerifyListener */ void addVerifyListener (VerifyListener listener) { checkWidget(); if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener (listener); addListener (DWT.Verify, typedListener); } static int checkStyle (int style) { /* * Even though it is legal to create this widget * with scroll bars, they serve no useful purpose * because they do not automatically scroll the * widget's client area. The fix is to clear * the DWT style. */ return style & ~(DWT.H_SCROLL | DWT.V_SCROLL); } protected override void checkSubclass () { if (!isValidSubclass ()) error (DWT.ERROR_INVALID_SUBCLASS); } public override Point computeSize (int wHint, int hHint, bool changed) { checkWidget (); if (wHint !is DWT.DEFAULT && wHint < 0) wHint = 0; if (hHint !is DWT.DEFAULT && hHint < 0) hHint = 0; int[1] w, h; OS.gtk_widget_realize (handle); auto layout = OS.gtk_entry_get_layout (cast(GtkEntry*)handle); auto adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); for (int i = 0; i < digits; i++) adjustment.upper *= 10; String string = to!(String)( (cast(int) adjustment.upper) ); if (digits > 0) { //PROTING_TODO: Efficiency String buffer = string ~ getDecimalSeparator (); int count = digits - string.length; while (count >= 0) { buffer ~= "0"; count--; } string = buffer; } char [] buffer1 = string; auto ptr = OS.pango_layout_get_text (layout); String buffer2 = fromStringz( ptr ).dup; OS.pango_layout_set_text (layout, buffer1.ptr, buffer1.length); OS.pango_layout_get_size (layout, w.ptr, h.ptr); OS.pango_layout_set_text (layout, buffer2.ptr, buffer2.length); int width = OS.PANGO_PIXELS (w [0]); int height = OS.PANGO_PIXELS (h [0]); width = wHint is DWT.DEFAULT ? width : wHint; height = hHint is DWT.DEFAULT ? height : hHint; Rectangle trim = computeTrim (0, 0, width, height); return new Point (trim.width, trim.height); } override public Rectangle computeTrim (int x, int y, int width, int height) { checkWidget (); int xborder = 0, yborder = 0; auto style = OS.gtk_widget_get_style (handle); if ((this.style & DWT.BORDER) !is 0) { xborder += OS.gtk_style_get_xthickness (style); yborder += OS.gtk_style_get_ythickness (style); } xborder += INNER_BORDER; yborder += INNER_BORDER; int property; OS.gtk_widget_style_get1 (handle, OS.interior_focus.ptr, &property); if (property is 0) { OS.gtk_widget_style_get1 (handle, OS.focus_line_width.ptr, &property); xborder += property; yborder += property; } auto fontDesc = OS.gtk_style_get_font_desc (style); int fontSize = OS.pango_font_description_get_size (fontDesc); int arrowSize = Math.max (OS.PANGO_PIXELS (fontSize), MIN_ARROW_WIDTH); arrowSize = arrowSize - arrowSize % 2; Rectangle trim = super.computeTrim (x, y, width, height); trim.x -= xborder; trim.y -= yborder; trim.width += 2 * xborder; trim.height += 2 * yborder; trim.width += arrowSize + (2 * OS.gtk_style_get_xthickness (style)); return new Rectangle (trim.x, trim.y, trim.width, trim.height); } /** * Copies the selected text. * <p> * The current selection is copied to the clipboard. * </p> * * @exception DWTException <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 copy () { checkWidget (); OS.gtk_editable_copy_clipboard (cast(GtkEditable*)handle); } override void createHandle (int index) { state |= HANDLE | MENU; fixedHandle = cast(GtkWidget*)OS.g_object_new (display.gtk_fixed_get_type (), null); if (fixedHandle is null) error (DWT.ERROR_NO_HANDLES); OS.gtk_fixed_set_has_window (cast(GtkFixed*)fixedHandle, true); auto adjustment = OS.gtk_adjustment_new (0, 0, 100, 1, 10, 0); if (adjustment is null) error (DWT.ERROR_NO_HANDLES); handle = cast(GtkWidget*)OS.gtk_spin_button_new (cast(GtkAdjustment*)adjustment, 1, 0); if (handle is null) error (DWT.ERROR_NO_HANDLES); OS.gtk_container_add (cast(GtkContainer*)fixedHandle, handle); OS.gtk_editable_set_editable (cast(GtkEditable*)handle, (style & DWT.READ_ONLY) is 0); OS.gtk_entry_set_has_frame (cast(GtkEntry*)handle, (style & DWT.BORDER) !is 0); OS.gtk_spin_button_set_wrap (cast(GtkSpinButton*)handle, (style & DWT.WRAP) !is 0); } /** * Cuts the selected text. * <p> * The current selection is first copied to the * clipboard and then deleted from the widget. * </p> * * @exception DWTException <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 cut () { checkWidget (); OS.gtk_editable_cut_clipboard (cast(GtkEditable*)handle); } override void deregister () { super.deregister (); auto imContext = imContext (); if (imContext !is null) display.removeWidget (cast(GtkWidget*)imContext); } override GdkDrawable* eventWindow () { return paintWindow (); } override GtkWidget* enterExitHandle () { return fixedHandle; } override bool filterKey (int keyval, GdkEventKey* event) { int time = OS.gdk_event_get_time (cast(GdkEvent*)event); if (time !is lastEventTime) { lastEventTime = time; auto imContext = imContext (); if (imContext !is null) { return cast(bool)OS.gtk_im_context_filter_keypress (imContext, event); } } gdkEventKey = event; return false; } void fixIM () { /* * The IM filter has to be called one time for each key press event. * When the IM is open the key events are duplicated. The first event * is filtered by DWT and the second event is filtered by GTK. In some * cases the GTK handler does not run (the widget is destroyed, the * application code consumes the event, etc), for these cases the IM * filter has to be called by DWT. */ if (gdkEventKey !is null && gdkEventKey !is cast(GdkEventKey*)-1) { auto imContext = imContext (); if (imContext !is null) { OS.gtk_im_context_filter_keypress (imContext, gdkEventKey); gdkEventKey = cast(GdkEventKey*)-1; return; } } gdkEventKey = null; } override GdkColor* getBackgroundColor () { return getBaseColor (); } public override int getBorderWidth () { checkWidget(); auto style = OS.gtk_widget_get_style (handle); if ((this.style & DWT.BORDER) !is 0) { return OS.gtk_style_get_xthickness (style); } return 0; } override GdkColor* getForegroundColor () { return getTextColor (); } /** * Returns the amount that the receiver's value will be * modified by when the up/down arrows are pressed. * * @return the increment * * @exception DWTException <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 adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); auto value = adjustment.step_increment; for (int i = 0; i < digits; i++) value *= 10; return cast(int) (value > 0 ? value + 0.5 : value - 0.5); } /** * Returns the maximum value which the receiver will allow. * * @return the maximum * * @exception DWTException <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 adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); auto value = adjustment.upper; for (int i = 0; i < digits; i++) value *= 10; return cast(int) (value > 0 ? value + 0.5 : value - 0.5); } /** * Returns the minimum value which the receiver will allow. * * @return the minimum * * @exception DWTException <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 adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); auto value = adjustment.lower; for (int i = 0; i < digits; i++) value *= 10; return cast(int) (value > 0 ? value + 0.5 : value - 0.5); } /** * Returns the amount that the receiver's position will be * modified by when the page up/down keys are pressed. * * @return the page increment * * @exception DWTException <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 adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); auto value = adjustment.page_increment; for (int i = 0; i < digits; i++) value *= 10; return cast(int) (value > 0 ? value + 0.5 : value - 0.5); } /** * Returns the <em>selection</em>, which is the receiver's position. * * @return the selection * * @exception DWTException <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 adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); auto value = adjustment.value; for (int i = 0; i < digits; i++) value *= 10; return cast(int) (value > 0 ? value + 0.5 : value - 0.5); } /** * Returns a string containing a copy of the contents of the * receiver's text field, or an empty string if there are no * contents. * * @return the receiver's text * * @exception DWTException <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> * * @since 3.4 */ public String getText () { checkWidget (); auto str = OS.gtk_entry_get_text (handle); return fromStringz(str).dup; } /** * Returns the maximum number of characters that the receiver's * text field is capable of holding. If this has not been changed * by <code>setTextLimit()</code>, it will be the constant * <code>Spinner.LIMIT</code>. * * @return the text limit * * @exception DWTException <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 #LIMIT * * @since 3.4 */ public int getTextLimit () { checkWidget (); int limit = OS.gtk_entry_get_max_length (handle); return limit is 0 ? 0xFFFF : limit; } /** * Returns the number of decimal places used by the receiver. * * @return the digits * * @exception DWTException <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 getDigits () { checkWidget (); return OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); } String getDecimalSeparator () { auto ptr = OS.localeconv_decimal_point (); return fromStringz( ptr ).dup; } override int /*long*/ gtk_activate (GtkWidget* widget) { postEvent (DWT.DefaultSelection); return 0; } override int /*long*/ gtk_changed (GtkWidget* widget) { auto str = OS.gtk_entry_get_text (cast(GtkEntry*)handle); int length = tango.stdc.string.strlen (str); if (length > 0) { char* endptr; double value = OS.g_strtod (str, &endptr); if (endptr is str + length) { auto adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); if (value !is adjustment.value && adjustment.lower <= value && value <= adjustment.upper) { OS.gtk_spin_button_update (cast(GtkSpinButton*)handle); } } } /* * Feature in GTK. When the user types, GTK positions * the caret after sending the changed signal. This * means that application code that attempts to position * the caret during a changed signal will fail. The fix * is to post the modify event when the user is typing. */ bool keyPress = false; auto eventPtr = OS.gtk_get_current_event (); if (eventPtr !is null) { GdkEventKey* gdkEvent = cast(GdkEventKey*)eventPtr; switch (gdkEvent.type) { case OS.GDK_KEY_PRESS: keyPress = true; break; default: } OS.gdk_event_free (eventPtr); } if (keyPress) { postEvent (DWT.Modify); } else { sendEvent (DWT.Modify); } return 0; } int /*long*/ gtk_commit (GtkIMContext* imContext, char* text) { if (text is null) return 0; if (!OS.gtk_editable_get_editable (cast(GtkEditable*)handle)) return 0; char [] chars = fromStringz( text ).dup; if (chars.length is 0) return 0; char [] newChars = sendIMKeyEvent (DWT.KeyDown, null, chars); if (newChars is null) return 0; /* * Feature in GTK. For a GtkEntry, during the insert-text signal, * GTK allows the programmer to change only the caret location, * not the selection. If the programmer changes the selection, * the new selection is lost. The fix is to detect a selection * change and set it after the insert-text signal has completed. */ fixStart = fixEnd = -1; OS.g_signal_handlers_block_matched (imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCOMMIT); int id = OS.g_signal_lookup (OS.commit.ptr, OS.gtk_im_context_get_type ()); int mask = OS.G_SIGNAL_MATCH_DATA | OS.G_SIGNAL_MATCH_ID; OS.g_signal_handlers_unblock_matched (imContext, mask, id, 0, null, null, cast(void*)handle); if (newChars is chars) { OS.g_signal_emit_by_name1 (imContext, OS.commit.ptr, cast(int)text); } else { OS.g_signal_emit_by_name1 (imContext, OS.commit.ptr, cast(int)toStringz(newChars)); } OS.g_signal_handlers_unblock_matched (imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCOMMIT); OS.g_signal_handlers_block_matched (imContext, mask, id, 0, null, null, cast(void*)handle); if (fixStart !is -1 && fixEnd !is -1) { OS.gtk_editable_set_position (cast(GtkEditable*)handle, fixStart); OS.gtk_editable_select_region (cast(GtkEditable*)handle, fixStart, fixEnd); } fixStart = fixEnd = -1; return 0; } override int /*long*/ gtk_delete_text (GtkWidget* widget, int start_pos, int end_pos) { if (!hooks (DWT.Verify) && !filters (DWT.Verify)) return 0; String newText = verifyText ("", cast(int)/*64*/start_pos, cast(int)/*64*/end_pos); if (newText is null) { OS.g_signal_stop_emission_by_name (handle, OS.delete_text.ptr); } else { if (newText.length > 0) { int pos; pos = cast(int)/*64*/end_pos; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCHANGED); OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udINSERT_TEXT); OS.gtk_editable_insert_text (cast(GtkEditable*)handle, newText.ptr, newText.length, &pos); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udINSERT_TEXT); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCHANGED); OS.gtk_editable_set_position (cast(GtkEditable*)handle, pos); } } return 0; } override int /*long*/ gtk_event_after (GtkWidget* widget, GdkEvent* gdkEvent) { if (cursor !is null) gtk_setCursor (cursor.handle); return super.gtk_event_after (widget, gdkEvent); } override int /*long*/ gtk_focus_out_event (GtkWidget* widget, GdkEventFocus* event) { fixIM (); return super.gtk_focus_out_event (widget, event); } override int /*long*/ gtk_insert_text (GtkEditable* widget, char* new_text, int new_text_length, int position) { // if (!hooks (DWT.Verify) && !filters (DWT.Verify)) return 0; if (new_text is null || new_text_length is 0) return 0; String oldText = new_text[ 0 .. new_text_length ].dup; int pos; pos = position; if (pos is -1) { auto ptr = OS.gtk_entry_get_text (cast(GtkEntry*)handle); pos = cast(int)/*64*/OS.g_utf8_strlen (ptr, -1); } String newText = verifyText (oldText, pos, pos); if (newText !is oldText) { int newStart, newEnd; OS.gtk_editable_get_selection_bounds (cast(GtkEditable*)handle, &newStart, &newEnd); if (newText !is null) { if (newStart !is newEnd) { OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udDELETE_TEXT); OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCHANGED); OS.gtk_editable_delete_selection (cast(GtkEditable*)handle); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udDELETE_TEXT); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCHANGED); } OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udINSERT_TEXT); OS.gtk_editable_insert_text (cast(GtkEditable*)handle, newText.ptr, newText.length, &pos); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udINSERT_TEXT); newStart = newEnd = pos; } pos = newEnd; if (newStart !is newEnd ) { fixStart = newStart ; fixEnd = newEnd ; } position = pos; OS.g_signal_stop_emission_by_name (handle, OS.insert_text.ptr); } return 0; } override int /*long*/ gtk_key_press_event (GtkWidget* widget, GdkEventKey* event) { auto result = super.gtk_key_press_event (widget, event); if (result !is 0) fixIM (); if (gdkEventKey is cast(GdkEventKey*)-1) result = 1; gdkEventKey = null; return result; } override int /*long*/ gtk_populate_popup (GtkWidget* widget, GtkWidget* menu) { if ((style & DWT.RIGHT_TO_LEFT) !is 0) { OS.gtk_widget_set_direction (menu, OS.GTK_TEXT_DIR_RTL); display.doSetDirectionProc( menu, OS.GTK_TEXT_DIR_RTL); } return 0; } override int /*long*/ gtk_value_changed (int adjustment) { postEvent (DWT.Selection); return 0; } override void hookEvents () { super.hookEvents(); OS.g_signal_connect_closure (handle, OS.changed.ptr, display.closures [CHANGED], true); OS.g_signal_connect_closure (handle, OS.insert_text.ptr, display.closures [INSERT_TEXT], false); OS.g_signal_connect_closure (handle, OS.delete_text.ptr, display.closures [DELETE_TEXT], false); OS.g_signal_connect_closure (handle, OS.value_changed.ptr, display.closures [VALUE_CHANGED], false); OS.g_signal_connect_closure (handle, OS.activate.ptr, display.closures [ACTIVATE], false); OS.g_signal_connect_closure (handle, OS.populate_popup.ptr, display.closures [POPULATE_POPUP], false); auto imContext = imContext (); if (imContext !is null) { OS.g_signal_connect_closure (imContext, OS.commit.ptr, display.closures [COMMIT], false); int id = OS.g_signal_lookup (OS.commit.ptr, OS.gtk_im_context_get_type ()); int mask = OS.G_SIGNAL_MATCH_DATA | OS.G_SIGNAL_MATCH_ID; OS.g_signal_handlers_block_matched (imContext, mask, id, 0, null, null, cast(void*)handle); } } GtkIMContext* imContext () { return OS.GTK_ENTRY_IM_CONTEXT (cast(GtkEntry*)handle); } override GdkDrawable* paintWindow () { auto window = super.paintWindow (); auto children = OS.gdk_window_get_children (window); if (children !is null) window = cast(GdkDrawable*)OS.g_list_data (children); OS.g_list_free (children); return window; } /** * Pastes text from clipboard. * <p> * The selected text is deleted from the widget * and new text inserted from the clipboard. * </p> * * @exception DWTException <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 paste () { checkWidget (); OS.gtk_editable_paste_clipboard (cast(GtkEditable*)handle); } override void register () { super.register (); auto imContext = imContext (); if (imContext !is null) display.addWidget (cast(GtkWidget*)imContext, this); } override void releaseWidget () { super.releaseWidget (); fixIM (); } /** * Removes the listener from the collection of listeners who will * be notified when the receiver's text is modified. * * @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 DWTException <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 ModifyListener * @see #addModifyListener */ public void removeModifyListener (ModifyListener listener) { checkWidget (); if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); if (eventTable is null) return; eventTable.unhook (DWT.Modify, listener); } /** * 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 <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception DWTException <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 (DWT.ERROR_NULL_ARGUMENT); if (eventTable is null) return; eventTable.unhook(DWT.Selection, listener); eventTable.unhook(DWT.DefaultSelection,listener); } /** * Removes the listener from the collection of listeners who will * be notified when the control is verified. * * @param listener the listener which should be notified * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> * </ul> * @exception DWTException <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 VerifyListener * @see #addVerifyListener */ void removeVerifyListener (VerifyListener listener) { checkWidget (); if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); if (eventTable is null) return; eventTable.unhook (DWT.Verify, listener); } override void setBackgroundColor (GdkColor* color) { super.setBackgroundColor (color); OS.gtk_widget_modify_base (handle, 0, color); } override void gtk_setCursor (GdkCursor* cursor) { GdkCursor* defaultCursor; if (cursor is null) defaultCursor = OS.gdk_cursor_new (OS.GDK_XTERM); super.gtk_setCursor (cursor !is null ? cursor : defaultCursor); if (cursor is null) OS.gdk_cursor_destroy (defaultCursor); } override void setFontDescription (PangoFontDescription* font) { super.setFontDescription (font); } /** * Sets the amount that the receiver's value will be * modified by when the up/down arrows are pressed to * the argument, which must be at least one. * * @param value the new increment (must be greater than zero) * * @exception DWTException <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; auto adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); double newValue = value; int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); for (int i = 0; i < digits; i++) newValue /= 10; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); OS.gtk_spin_button_set_increments (cast(GtkSpinButton*)handle, newValue, adjustment.page_increment); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_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 DWTException <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 (); auto adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); double newValue = value; int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); for (int i = 0; i < digits; i++) newValue /= 10; if (newValue <= adjustment.lower) return; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); OS.gtk_spin_button_set_range (cast(GtkSpinButton*)handle, adjustment.lower, newValue); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); } /** * Sets the minimum value that the receiver will allow. This new * value will be ignored if it 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 less than the current maximum * * @exception DWTException <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 (); auto adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); double newValue = value; int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); for (int i = 0; i < digits; i++) newValue /= 10; if (newValue >= adjustment.upper) return; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); OS.gtk_spin_button_set_range (cast(GtkSpinButton*)handle, newValue, adjustment.upper); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); } /** * Sets the amount that the receiver's position will be * modified by when the page up/down keys are pressed * to the argument, which must be at least one. * * @param value the page increment (must be greater than zero) * * @exception DWTException <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; auto adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); double newValue = value; int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); for (int i = 0; i < digits; i++) newValue /= 10; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); OS.gtk_spin_button_set_increments (cast(GtkSpinButton*)handle, adjustment.step_increment, newValue); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); } /** * Sets the <em>selection</em>, which is the receiver's * position, to the argument. If the argument is not within * the range specified by minimum and maximum, it will be * adjusted to fall within this range. * * @param value the new selection (must be zero or greater) * * @exception DWTException <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 (); double newValue = value; int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); for (int i = 0; i < digits; i++) newValue /= 10; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); OS.gtk_spin_button_set_value (cast(GtkSpinButton*)handle, newValue); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); } /** * Sets the maximum number of characters that the receiver's * text field is capable of holding to be the argument. * <p> * To reset this value to the default, use <code>setTextLimit(Spinner.LIMIT)</code>. * Specifying a limit value larger than <code>Spinner.LIMIT</code> sets the * receiver's limit to <code>Spinner.LIMIT</code>. * </p> * @param limit new text limit * * @exception IllegalArgumentException <ul> * <li>ERROR_CANNOT_BE_ZERO - if the limit is zero</li> * </ul> * @exception DWTException <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 #LIMIT * * @since 3.4 */ public void setTextLimit (int limit) { checkWidget (); if (limit is 0) error (DWT.ERROR_CANNOT_BE_ZERO); OS.gtk_entry_set_max_length (handle, limit); } /** * Sets the number of decimal places used by the receiver. * <p> * The digit setting is used to allow for floating point values in the receiver. * For example, to set the selection to a floating point value of 1.37 call setDigits() with * a value of 2 and setSelection() with a value of 137. Similarly, if getDigits() has a value * of 2 and getSelection() returns 137 this should be interpreted as 1.37. This applies to all * numeric APIs. * </p> * * @param value the new digits (must be greater than or equal to zero) * * @exception IllegalArgumentException <ul> * <li>ERROR_INVALID_ARGUMENT - if the value is less than zero</li> * </ul> * @exception DWTException <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 setDigits (int value) { checkWidget (); if (value < 0) error (DWT.ERROR_INVALID_ARGUMENT); int digits = OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle); if (value is digits) return; auto adjustment = OS.gtk_spin_button_get_adjustment (cast(GtkSpinButton*)handle); int diff = Math.abs (value - digits); int factor = 1; for (int i = 0; i < diff; i++) factor *= 10; if (digits > value) { adjustment.value *= factor; adjustment.upper *= factor; adjustment.lower *= factor; adjustment.step_increment *= factor; adjustment.page_increment *= factor; } else { adjustment.value /= factor; adjustment.upper /= factor; adjustment.lower /= factor; adjustment.step_increment /= factor; adjustment.page_increment /= factor; } OS.gtk_spin_button_set_digits (cast(GtkSpinButton*)handle, value); } /** * Sets the receiver's selection, minimum value, maximum * value, digits, increment and page increment all at once. * <p> * Note: This is similar to setting the values individually * using the appropriate methods, but may be implemented in a * more efficient fashion on some platforms. * </p> * * @param selection the new selection value * @param minimum the new minimum value * @param maximum the new maximum value * @param digits the new digits value * @param increment the new increment value * @param pageIncrement the new pageIncrement value * * @exception DWTException <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> * * @since 3.2 */ public void setValues (int selection, int minimum, int maximum, int digits, int increment, int pageIncrement) { checkWidget (); if (maximum <= minimum) return; if (digits < 0) return; if (increment < 1) return; if (pageIncrement < 1) return; selection = Math.min (Math.max (minimum, selection), maximum); double factor = 1; for (int i = 0; i < digits; i++) factor *= 10; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); OS.gtk_spin_button_set_range (cast(GtkSpinButton*)handle, minimum / factor, maximum / factor); OS.gtk_spin_button_set_increments (cast(GtkSpinButton*)handle, increment / factor, pageIncrement / factor); OS.gtk_spin_button_set_value (cast(GtkSpinButton*)handle, selection / factor); OS.gtk_spin_button_set_digits (cast(GtkSpinButton*)handle, digits); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udVALUE_CHANGED); } override bool translateTraversal (GdkEventKey* keyEvent) { int key = keyEvent.keyval; switch (key) { case OS.GDK_KP_Enter: case OS.GDK_Return: { auto imContext = imContext (); if (imContext !is null) { char* preeditString; OS.gtk_im_context_get_preedit_string (imContext, &preeditString, null, null); if (preeditString !is null) { int length = tango.stdc.string.strlen (preeditString); OS.g_free (preeditString); if (length !is 0) return false; } } default: } } return super.translateTraversal (keyEvent); } String verifyText (String string, int start, int end) { if (string.length is 0 && start is end) return null; Event event = new Event (); event.text = string; event.start = start; event.end = end; auto eventPtr = OS.gtk_get_current_event (); if (eventPtr !is null) { GdkEventKey* gdkEvent = cast(GdkEventKey*)eventPtr; switch (gdkEvent.type) { case OS.GDK_KEY_PRESS: setKeyState (event, gdkEvent); break; default: } OS.gdk_event_free (eventPtr); } int index = 0; if (OS.gtk_spin_button_get_digits (cast(GtkSpinButton*)handle) > 0) { String decimalSeparator = getDecimalSeparator (); index = string.indexOf( decimalSeparator ); if (index !is -1 ) { string = string.substring( 0, index ) ~ string.substring( index + 1 ); } index = 0; } if (string.length > 0) { auto adjustment = OS.gtk_spin_button_get_adjustment (handle); if (adjustment.lower < 0 && string.charAt (0) is '-') index++; } while (index < string.length) { if (!CharacterIsDigit (string.charAt(index))) break; index++; } event.doit = index is string.length; /* * It is possible (but unlikely), that application * code could have disposed the widget in the verify * event. If this happens, answer null to cancel * the operation. */ sendEvent (DWT.Verify, event); if (!event.doit || isDisposed ()) return null; return event.text; } }