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/*******************************************************************************
* Copyright (c) 2000, 2018 IBM Corporation and others.
*
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.widgets;
import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.gtk.*;
import org.eclipse.swt.internal.gtk3.*;
import org.eclipse.swt.internal.gtk4.*;
/**
* Instances of this class are selectable user interface
* objects that allow the user to enter and modify numeric
* values.
*
* Note that although this class is a subclass of Composite
,
* it does not make sense to add children to it, or set a layout on it.
*
*
* - Styles:
* - READ_ONLY, WRAP
* - Events:
* - Selection, Modify, Verify
*
*
* IMPORTANT: This class is not intended to be subclassed.
*
*
* @see Spinner snippets
* @see SWT Example: ControlExample
* @see Sample code and further information
*
* @since 3.1
* @noextend This class is not intended to be subclassed by clients.
*/
public class Spinner extends Composite {
static final int MIN_ARROW_WIDTH = 6;
int lastEventTime = 0;
long imContext;
long gdkEventKey = 0;
long entryHandle;
int fixStart = -1, fixEnd = -1;
double climbRate = 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 final static int LIMIT;
/*
* These values can be different on different platforms.
* Therefore they are not initialized in the declaration
* to stop the compiler from inlining.
*/
static {
LIMIT = 0xFFFF;
}
/* Spinner uses non-standard CSS to set its background color, so we need
* a global variable to keep track of its background color.
*/
GdkRGBA background;
/**
* 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
* - ERROR_NULL_ARGUMENT - if the parent is null
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
* - ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
*
*
* @see SWT#READ_ONLY
* @see SWT#WRAP
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public Spinner (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 ModifyListener
* interface.
*
* @param listener the listener which should 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 ModifyListener
* @see #removeModifyListener
*/
public void addModifyListener (ModifyListener listener) {
addTypedListener(listener, SWT.Modify);
}
/**
* 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.
*
* widgetSelected
is not called for texts.
* widgetDefaultSelected
is typically called when ENTER is pressed in a single-line text.
*
*
* @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(SelectionListener listener) {
addTypedListener(listener, SWT.Selection, SWT.DefaultSelection);
}
/**
* 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 VerifyListener
* interface.
*
* @param listener the listener which should 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 VerifyListener
* @see #removeVerifyListener
*/
void addVerifyListener (VerifyListener listener) {
addTypedListener(listener, SWT.Verify);
}
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 SWT style.
*/
return style & ~(SWT.H_SCROLL | SWT.V_SCROLL);
}
@Override
protected void checkSubclass () {
if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}
@Override
Point computeSizeInPixels (int wHint, int hHint, boolean changed) {
checkWidget ();
if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0;
if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0;
if (GTK.GTK4) {
GTK.gtk_widget_set_size_request(handle, wHint, hHint);
GtkRequisition requisition = new GtkRequisition();
GTK.gtk_widget_get_preferred_size(handle, requisition, null);
int width = wHint == SWT.DEFAULT ? requisition.width : Math.max(wHint, requisition.width);
int height = hHint == SWT.DEFAULT ? requisition.height : hHint;
Rectangle trim = computeTrimInPixels(0, 0, width, height);
return new Point(trim.width, trim.height);
} else {
GTK.gtk_widget_realize (handle);
long layout = GTK3.gtk_entry_get_layout (handle);
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
double upper = GTK.gtk_adjustment_get_upper (hAdjustment);
int digits = GTK.gtk_spin_button_get_digits (handle);
for (int i = 0; i < digits; i++) upper *= 10;
String string = String.valueOf ((int) upper);
if (digits > 0) {
StringBuilder buffer = new StringBuilder ();
buffer.append (string);
buffer.append (getDecimalSeparator ());
int count = digits - string.length ();
while (count >= 0) {
buffer.append ("0");
count--;
}
string = buffer.toString ();
}
byte [] buffer1 = Converter.wcsToMbcs (string, false);
long ptr = OS.pango_layout_get_text (layout);
int length = C.strlen (ptr);
byte [] buffer2 = new byte [length];
C.memmove (buffer2, ptr, length);
OS.pango_layout_set_text (layout, buffer1, buffer1.length);
int width, height = 0 ;
GTK.gtk_widget_realize (handle);
GTK.gtk_widget_set_size_request (handle, wHint, hHint);
GtkRequisition requisition = new GtkRequisition ();
GTK.gtk_widget_get_preferred_size (handle, requisition, null);
width = wHint == SWT.DEFAULT ? requisition.width : Math.max(wHint, requisition.width);
height = hHint == SWT.DEFAULT ? requisition.height : hHint;
OS.pango_layout_set_text (layout, buffer2, buffer2.length);
Rectangle trim = computeTrimInPixels (0, 0, width, height);
return new Point (trim.width, trim.height);
}
}
@Override
Rectangle computeTrimInPixels (int x, int y, int width, int height) {
checkWidget ();
int xborder = 0, yborder = 0;
Rectangle trim = super.computeTrimInPixels (x, y, width, height);
GtkBorder tmp = new GtkBorder();
long context = GTK.gtk_widget_get_style_context (handle);
int state_flag = GTK.gtk_widget_get_state_flags(handle);
gtk_style_context_get_padding(context, state_flag, tmp);
if ((style & SWT.BORDER) != 0) {
int state = GTK.gtk_widget_get_state_flags(handle);
gtk_style_context_get_border(context, state, tmp);
trim.x -= tmp.left;
trim.y -= tmp.top;
trim.width += tmp.left + tmp.right;
trim.height += tmp.top + tmp.bottom;
}
/*
* Focus line width is done via CSS in GTK4, and does not contribute
* to the size of the widget.
*/
if (!GTK.GTK4) {
int [] property = new int [1];
GTK3.gtk_widget_style_get (handle, OS.interior_focus, property, 0);
if (property [0] == 0) {
GTK3.gtk_widget_style_get (handle, OS.focus_line_width, property, 0);
xborder += property [0];
yborder += property [0];
}
}
trim.x -= xborder;
trim.y -= yborder;
trim.width += 2 * xborder;
trim.height += 2 * yborder;
return new Rectangle (trim.x, trim.y, trim.width, trim.height);
}
/**
* Copies the selected text.
*
* The current selection is copied to the clipboard.
*
*
* @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 copy () {
checkWidget ();
if (GTK.GTK4) {
long textHandle = GTK4.gtk_widget_get_first_child(entryHandle);
GTK4.gtk_widget_activate_action(textHandle, OS.action_copy_clipboard, null);
} else {
GTK3.gtk_editable_copy_clipboard(handle);
}
}
@Override
void createHandle (int index) {
state |= HANDLE | MENU;
fixedHandle = OS.g_object_new (display.gtk_fixed_get_type (), 0);
if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES);
long adjustment = GTK.gtk_adjustment_new (0, 0, 100, 1, 10, 0);
if (adjustment == 0) error (SWT.ERROR_NO_HANDLES);
handle = GTK.gtk_spin_button_new (adjustment, climbRate, 0);
if (handle == 0) error (SWT.ERROR_NO_HANDLES);
if (DISABLE_EMOJI && GTK.GTK_VERSION >= OS.VERSION(3, 22, 20)) {
GTK.gtk_entry_set_input_hints(handle, GTK.GTK_INPUT_HINT_NO_EMOJI);
}
if (GTK.GTK4) {
OS.swt_fixed_add(fixedHandle, handle);
entryHandle = GTK4.gtk_widget_get_first_child(handle);
} else {
GTK3.gtk_widget_set_has_window(fixedHandle, true);
GTK3.gtk_container_add (fixedHandle, handle);
}
GTK.gtk_editable_set_editable (GTK.GTK4 ? entryHandle : handle, (style & SWT.READ_ONLY) == 0);
GTK.gtk_spin_button_set_wrap (handle, (style & SWT.WRAP) != 0);
imContext = OS.imContextLast();
// In GTK 3 font description is inherited from parent widget which is not how SWT has always worked,
// reset to default font to get the usual behavior
setFontDescription(defaultFont().handle);
}
/**
* Cuts the selected text.
*
* The current selection is first copied to the
* clipboard and then deleted from the widget.
*
*
* @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 cut () {
checkWidget ();
if (GTK.GTK4) {
long textHandle = GTK4.gtk_widget_get_first_child(entryHandle);
GTK4.gtk_widget_activate_action(textHandle, OS.action_cut_clipboard, null);
} else {
GTK3.gtk_editable_cut_clipboard(handle);
}
}
@Override
GdkRGBA defaultBackground () {
return display.getSystemColor(SWT.COLOR_LIST_BACKGROUND).handle;
}
@Override
void deregister () {
super.deregister ();
long imContext = imContext ();
if (imContext != 0) display.removeWidget (imContext);
}
@Override
long eventWindow () {
return paintWindow ();
}
@Override
long eventSurface () {
return paintSurface ();
}
@Override
long enterExitHandle () {
return fixedHandle;
}
@Override
boolean filterKey (long event) {
int time = GDK.gdk_event_get_time (event);
if (time != lastEventTime) {
lastEventTime = time;
long imContext = imContext ();
if (imContext != 0) {
if (GTK.GTK4)
return GTK4.gtk_im_context_filter_keypress (imContext, event);
else
return GTK3.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 SWT 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 SWT.
*/
if (gdkEventKey != 0 && gdkEventKey != -1) {
long imContext = imContext ();
if (imContext != 0) {
if (GTK.GTK4)
GTK4.gtk_im_context_filter_keypress (imContext, gdkEventKey);
else
GTK3.gtk_im_context_filter_keypress (imContext, gdkEventKey);
gdkEventKey = -1;
return;
}
}
gdkEventKey = 0;
}
@Override
int getBorderWidthInPixels () {
checkWidget();
if ((this.style & SWT.BORDER) != 0) {
return getThickness (handle).x;
}
return 0;
}
/**
* Returns the amount that the receiver's value will be
* modified by when the up/down arrows are pressed.
*
* @return the increment
*
* @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 getIncrement () {
checkWidget ();
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
int digits = GTK.gtk_spin_button_get_digits (handle);
double value = GTK.gtk_adjustment_get_step_increment (hAdjustment);
for (int i = 0; i < digits; i++) value *= 10;
return (int) (value > 0 ? value + 0.5 : value - 0.5);
}
/**
* 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 ();
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
int digits = GTK.gtk_spin_button_get_digits (handle);
double value = GTK.gtk_adjustment_get_upper (hAdjustment);
for (int i = 0; i < digits; i++) value *= 10;
return (int) (value > 0 ? value + 0.5 : value - 0.5);
}
/**
* 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 ();
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
int digits = GTK.gtk_spin_button_get_digits (handle);
double value = GTK.gtk_adjustment_get_lower (hAdjustment);
for (int i = 0; i < digits; i++) value *= 10;
return (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 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 getPageIncrement () {
checkWidget ();
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
int digits = GTK.gtk_spin_button_get_digits (handle);
double value = GTK.gtk_adjustment_get_page_increment (hAdjustment);
for (int i = 0; i < digits; i++) value *= 10;
return (int) (value > 0 ? value + 0.5 : value - 0.5);
}
/**
* Returns the selection, which is the receiver's position.
*
* @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 getSelection () {
checkWidget ();
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
int digits = GTK.gtk_spin_button_get_digits (handle);
double value = GTK.gtk_adjustment_get_value (hAdjustment);
for (int i = 0; i < digits; i++) value *= 10;
return (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 SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.4
*/
public String getText() {
checkWidget();
long stringPtr;
if (GTK.GTK4) {
long bufferHandle = GTK4.gtk_text_get_buffer(entryHandle);
stringPtr = GTK.gtk_entry_buffer_get_text(bufferHandle);
} else {
stringPtr = GTK3.gtk_entry_get_text(handle);
}
if (stringPtr == 0) return "";
int length = C.strlen(stringPtr);
byte[] buffer = new byte[length];
C.memmove(buffer, stringPtr, length);
return new String(Converter.mbcsToWcs(buffer));
}
/**
* Returns the maximum number of characters that the receiver's
* text field is capable of holding. If this has not been changed
* by setTextLimit()
, it will be the constant
* Spinner.LIMIT
.
*
* @return the text limit
*
* @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 #LIMIT
*
* @since 3.4
*/
public int getTextLimit () {
checkWidget ();
int limit = GTK.gtk_entry_get_max_length (GTK.GTK4 ? entryHandle : handle);
return limit == 0 ? LIMIT : limit;
}
/**
* Returns the number of decimal places used by the receiver.
*
* @return the digits
*
* @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 getDigits () {
checkWidget ();
return GTK.gtk_spin_button_get_digits (handle);
}
String getDecimalSeparator () {
long ptr = OS.localeconv_decimal_point ();
int length = C.strlen (ptr);
byte [] buffer = new byte [length];
C.memmove (buffer, ptr, length);
return new String (Converter.mbcsToWcs (buffer));
}
@Override
long gtk_activate (long widget) {
sendSelectionEvent (SWT.DefaultSelection);
return 0;
}
@Override
long gtk_changed (long widget) {
long stringPtr;
if (GTK.GTK4) {
long bufferHandle = GTK4.gtk_text_get_buffer(entryHandle);
stringPtr = GTK.gtk_entry_buffer_get_text(bufferHandle);
} else {
stringPtr = GTK3.gtk_entry_get_text(handle);
}
int length = C.strlen(stringPtr);
if (length > 0) {
long [] endptr = new long [1];
double value = OS.g_strtod (stringPtr, endptr);
int valueLength = (getDigits() == 0) ? String.valueOf((int)value).length() : String.valueOf(value).length();
if ((endptr [0] == stringPtr + length) && valueLength == length) {
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
GtkAdjustment adjustment = new GtkAdjustment ();
gtk_adjustment_get (hAdjustment, adjustment);
if (value != adjustment.value && adjustment.lower <= value && value <= adjustment.upper) {
GTK.gtk_spin_button_update (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.
*/
boolean keyPress = false;
long eventPtr = GTK.GTK4 ? 0 : GTK3.gtk_get_current_event();
if (eventPtr != 0) {
int eventType = GDK.gdk_event_get_event_type(eventPtr);
eventType = fixGdkEventTypeValues(eventType);
switch (eventType) {
case GDK.GDK_KEY_PRESS:
keyPress = true;
break;
}
gdk_event_free (eventPtr);
}
if (keyPress) {
postEvent (SWT.Modify);
} else {
sendEvent (SWT.Modify);
}
return 0;
}
@Override
long gtk_commit (long imContext, long text) {
if (text == 0) return 0;
if (!GTK.gtk_editable_get_editable (GTK.GTK4? entryHandle : handle)) return 0;
int length = C.strlen (text);
if (length == 0) return 0;
byte [] buffer = new byte [length];
C.memmove (buffer, text, length);
char [] chars = Converter.mbcsToWcs (buffer);
char [] newChars = sendIMKeyEvent (SWT.KeyDown, 0, chars);
if (newChars == 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, 0, 0, COMMIT);
int id = OS.g_signal_lookup (OS.commit, GTK.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, 0, 0, handle);
if (newChars == chars) {
OS.g_signal_emit_by_name (imContext, OS.commit, text);
} else {
buffer = Converter.wcsToMbcs (newChars, true);
OS.g_signal_emit_by_name (imContext, OS.commit, buffer);
}
OS.g_signal_handlers_unblock_matched (imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, COMMIT);
OS.g_signal_handlers_block_matched (imContext, mask, id, 0, 0, 0, handle);
if (fixStart != -1 && fixEnd != -1) {
GTK.gtk_editable_set_position (GTK.GTK4? entryHandle : handle, fixStart);
GTK.gtk_editable_select_region (GTK.GTK4? entryHandle : handle, fixStart, fixEnd);
}
fixStart = fixEnd = -1;
return 0;
}
@Override
long gtk_delete_text (long widget, long start_pos, long end_pos) {
if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0;
long ptr = GTK3.gtk_entry_get_text (GTK.GTK4 ? entryHandle : handle);
if (end_pos == -1) end_pos = OS.g_utf8_strlen (ptr, -1);
int start = (int)OS.g_utf8_offset_to_utf16_offset (ptr, start_pos);
int end = (int)OS.g_utf8_offset_to_utf16_offset (ptr, end_pos);
String newText = verifyText ("", start, end);
if (newText == null) {
OS.g_signal_stop_emission_by_name (handle, OS.delete_text);
} else {
if (newText.length () > 0) {
int [] pos = new int [1];
pos [0] = (int)end_pos;
byte [] buffer = Converter.wcsToMbcs (newText, false);
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
GTK.gtk_editable_insert_text (GTK.GTK4? entryHandle : handle, buffer, buffer.length, pos);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
GTK.gtk_editable_set_position (GTK.GTK4? entryHandle : handle, pos [0]);
}
}
return 0;
}
@Override
long gtk_event_after (long widget, long gdkEvent) {
if (cursor != null) setCursor (cursor.handle);
return super.gtk_event_after (widget, gdkEvent);
}
@Override
long gtk_focus_out_event (long widget, long event) {
fixIM ();
return super.gtk_focus_out_event (widget, event);
}
@Override
long gtk_insert_text (long widget, long new_text, long new_text_length, long position) {
// if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0;
if (new_text == 0 || new_text_length == 0) return 0;
byte [] buffer = new byte [(int)new_text_length];
C.memmove (buffer, new_text, buffer.length);
String oldText = new String (Converter.mbcsToWcs (buffer));
int [] pos = new int [1];
C.memmove (pos, position, 4);
long ptr = GTK3.gtk_entry_get_text (GTK.GTK4 ? entryHandle : handle);
if (pos [0] == -1) pos [0] = (int)OS.g_utf8_strlen (ptr, -1);
int start = (int)OS.g_utf16_pointer_to_offset (ptr, pos [0]);
String newText = verifyText (oldText, start, start);
if (newText != oldText) {
int [] newStart = new int [1], newEnd = new int [1];
GTK.gtk_editable_get_selection_bounds (GTK.GTK4? entryHandle : handle, newStart, newEnd);
if (newText != null) {
if (newStart [0] != newEnd [0]) {
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
GTK.gtk_editable_delete_selection (GTK.GTK4? entryHandle : handle);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
}
byte [] buffer3 = Converter.wcsToMbcs (newText, false);
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
GTK.gtk_editable_insert_text (GTK.GTK4? entryHandle : handle, buffer3, buffer3.length, pos);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
newStart [0] = newEnd [0] = pos [0];
}
pos [0] = newEnd [0];
if (newStart [0] != newEnd [0]) {
fixStart = newStart [0];
fixEnd = newEnd [0];
}
C.memmove (position, pos, 4);
OS.g_signal_stop_emission_by_name (handle, OS.insert_text);
}
return 0;
}
@Override
long gtk_key_press_event (long widget, long event) {
long result = super.gtk_key_press_event (widget, event);
if (result != 0) fixIM ();
if (gdkEventKey == -1) result = 1;
gdkEventKey = 0;
return result;
}
@Override
long gtk_populate_popup (long widget, long menu) {
if ((style & SWT.RIGHT_TO_LEFT) != 0) {
GTK.gtk_widget_set_direction (menu, GTK.GTK_TEXT_DIR_RTL);
GTK3.gtk_container_forall (menu, display.setDirectionProc, GTK.GTK_TEXT_DIR_RTL);
}
return 0;
}
@Override
long gtk_value_changed(long range) {
sendSelectionEvent(SWT.Selection);
return 0;
}
@Override
void hookEvents() {
super.hookEvents();
/* GtkEditable signals */
OS.g_signal_connect_closure(handle, OS.changed, display.getClosure(CHANGED), true);
OS.g_signal_connect_closure(handle, OS.insert_text, display.getClosure(INSERT_TEXT), false);
OS.g_signal_connect_closure(handle, OS.delete_text, display.getClosure(DELETE_TEXT), false);
/* GtkSpinButton signals */
OS.g_signal_connect_closure(handle, OS.value_changed, display.getClosure(VALUE_CHANGED), false);
if (GTK.GTK4) {
/* GtkText signals */
long textHandle = GTK4.gtk_widget_get_first_child(handle);
OS.g_signal_connect_closure(textHandle, OS.activate, display.getClosure(ACTIVATE), false);
} else {
/* GtkEntry signals */
OS.g_signal_connect_closure(handle, OS.activate, display.getClosure(ACTIVATE), false);
OS.g_signal_connect_closure(handle, OS.populate_popup, display.getClosure(POPULATE_POPUP), false);
}
long imContext = imContext ();
if (imContext != 0) {
OS.g_signal_connect_closure (imContext, OS.commit, display.getClosure (COMMIT), false);
int id = OS.g_signal_lookup (OS.commit, GTK.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, 0, 0, handle);
}
}
long imContext () {
if (imContext != 0) return imContext;
return 0;
}
@Override
long paintWindow () {
long window = super.paintWindow ();
long children = GDK.gdk_window_get_children (window);
if (children != 0) window = OS.g_list_data (children);
OS.g_list_free (children);
return window;
}
@Override
long paintSurface () {
long surface = super.paintSurface ();
/* TODO: GTK4 no access to children of the surface. Need to find alternative, note that class hierarchy can change from GTK3 */
return surface;
}
/**
* Pastes text from clipboard.
*
* The selected text is deleted from the widget
* and new text inserted from the clipboard.
*
*
* @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 paste () {
checkWidget ();
GTK3.gtk_editable_paste_clipboard (GTK.GTK4? entryHandle : handle);
}
@Override
void register () {
super.register ();
long imContext = imContext ();
if (imContext != 0) display.addWidget (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
* - 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 ModifyListener
* @see #addModifyListener
*/
public void removeModifyListener (ModifyListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.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
* - 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(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);
}
/**
* 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
* - 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 VerifyListener
* @see #addVerifyListener
*/
void removeVerifyListener (VerifyListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Verify, listener);
}
@Override
GdkRGBA getContextBackgroundGdkRGBA () {
if (background != null && (state & BACKGROUND) != 0) {
return background;
}
return defaultBackground();
}
@Override
void setBackgroundGdkRGBA (long context, long handle, GdkRGBA rgba) {
if (rgba == null) {
background = defaultBackground();
} else {
background = rgba;
}
if (GTK.GTK4) {
super.setBackgroundGdkRGBA(context, handle, rgba);
} else {
String color = display.gtk_rgba_to_css_string (background);
String css = "spinbutton {background-image: -gtk-gradient (linear, 0 0, 0 1, color-stop(0, " + color + "), color-stop(1, " + color + "));}";
cssBackground = css;
String finalCss = display.gtk_css_create_css_color_string (cssBackground, cssForeground, SWT.BACKGROUND);
gtk_css_provider_load_from_css(context, finalCss);
}
}
@Override
void setCursor (long cursor) {
long defaultCursor = 0;
if (cursor == 0) {
if (GTK.GTK4) {
defaultCursor = GDK.gdk_cursor_new_from_name ("xterm", 0);
} else {
defaultCursor = GDK.gdk_cursor_new_from_name (GDK.gdk_display_get_default(), "xterm");
}
}
super.setCursor (cursor != 0 ? cursor : defaultCursor);
if (cursor == 0) OS.g_object_unref (defaultCursor);
}
/**
* 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 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 setIncrement (int value) {
checkWidget ();
if (value < 1) return;
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
double page_increment = GTK.gtk_adjustment_get_page_increment (hAdjustment);
double newValue = value;
int digits = GTK.gtk_spin_button_get_digits (handle);
for (int i = 0; i < digits; i++) newValue /= 10;
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
GTK.gtk_spin_button_set_increments (handle, newValue, page_increment);
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 less 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 or equal to the current 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 (int value) {
checkWidget ();
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
double lower = GTK.gtk_adjustment_get_lower (hAdjustment);
double newValue = value;
int digits = GTK.gtk_spin_button_get_digits (handle);
for (int i = 0; i < digits; i++) newValue /= 10;
if (newValue < lower) return;
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
GTK.gtk_spin_button_set_range (handle, lower, newValue);
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 greater 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 or equal to the current 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 void setMinimum (int value) {
checkWidget ();
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
double upper = GTK.gtk_adjustment_get_upper (hAdjustment);
double newValue = value;
int digits = GTK.gtk_spin_button_get_digits (handle);
for (int i = 0; i < digits; i++) newValue /= 10;
if (newValue > upper) return;
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
GTK.gtk_spin_button_set_range (handle, newValue, upper);
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 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 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 setPageIncrement (int value) {
checkWidget ();
if (value < 1) return;
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
double step_increment = GTK.gtk_adjustment_get_step_increment(hAdjustment);
double newValue = value;
int digits = GTK.gtk_spin_button_get_digits (handle);
for (int i = 0; i < digits; i++) newValue /= 10;
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
GTK.gtk_spin_button_set_increments (handle, step_increment, newValue);
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
* 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 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 setSelection (int value) {
checkWidget ();
double newValue = value;
int digits = GTK.gtk_spin_button_get_digits (handle);
for (int i = 0; i < digits; i++) newValue /= 10;
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
GTK.gtk_spin_button_set_value (handle, newValue);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
}
/**
* Sets the maximum number of characters that the receiver's
* text field is capable of holding to be the argument.
*
* To reset this value to the default, use setTextLimit(Spinner.LIMIT)
.
* Specifying a limit value larger than Spinner.LIMIT
sets the
* receiver's limit to Spinner.LIMIT
.
*
* @param limit new text limit
*
* @exception IllegalArgumentException
* - ERROR_CANNOT_BE_ZERO - if the limit is zero
*
* @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 #LIMIT
*
* @since 3.4
*/
public void setTextLimit (int limit) {
checkWidget ();
if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO);
GTK.gtk_entry_set_max_length (GTK.GTK4 ? entryHandle : handle, limit);
}
/**
* Sets the number of decimal places used by the receiver.
*
* 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.
*
*
* @param value the new digits (must be greater than or equal to zero)
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the value is less than zero
*
* @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 setDigits (int value) {
checkWidget ();
if (value < 0) error (SWT.ERROR_INVALID_ARGUMENT);
int digits = GTK.gtk_spin_button_get_digits (handle);
if (value == digits) return;
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
GtkAdjustment adjustment = new GtkAdjustment ();
gtk_adjustment_get (hAdjustment, adjustment);
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;
climbRate *= factor;
} else {
adjustment.value /= factor;
adjustment.upper /= factor;
adjustment.lower /= factor;
adjustment.step_increment /= factor;
adjustment.page_increment /= factor;
climbRate /= factor;
}
GTK.gtk_adjustment_configure(hAdjustment, adjustment.value, adjustment.lower, adjustment.upper,
adjustment.step_increment, adjustment.page_increment, adjustment.page_size);
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
GTK.gtk_spin_button_configure (handle, hAdjustment, climbRate, value);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
}
/**
* Sets the receiver's selection, minimum value, maximum
* value, digits, increment and page increment all at once.
*
* 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.
*
*
* @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 SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @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;
/*
* The value of climb-rate indicates the acceleration rate
* to spin the value when the button is pressed and hold
* on the arrow button. This value should be varied
* depending upon the value of digits.
*/
OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
climbRate = 1.0 / factor;
long adjustment = GTK.gtk_spin_button_get_adjustment(handle);
GTK.gtk_spin_button_configure (handle, adjustment, climbRate, digits);
GTK.gtk_spin_button_set_range (handle, minimum / factor, maximum / factor);
GTK.gtk_spin_button_set_increments (handle, increment / factor, pageIncrement / factor);
GTK.gtk_spin_button_set_value (handle, selection / factor);
OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED);
}
@Override
boolean checkSubwindow () {
return false;
}
@Override
boolean translateTraversal (long event) {
int [] key = new int [1];
if (GTK.GTK4) {
key[0] = GDK.gdk_key_event_get_keyval(event);
} else {
GDK.gdk_event_get_keyval(event, key);
}
switch (key[0]) {
case GDK.GDK_KP_Enter:
case GDK.GDK_Return: {
long imContext = imContext ();
if (imContext != 0) {
long [] preeditString = new long [1];
GTK.gtk_im_context_get_preedit_string (imContext, preeditString, null, null);
if (preeditString [0] != 0) {
int length = C.strlen (preeditString [0]);
OS.g_free (preeditString [0]);
if (length != 0) return false;
}
}
}
}
return super.translateTraversal (event);
}
String verifyText (String string, int start, int end) {
if (string.length () == 0 && start == end) return null;
Event event = new Event ();
event.text = string;
event.start = start;
event.end = end;
long eventPtr = GTK3.gtk_get_current_event ();
if (eventPtr != 0) {
int type = GDK.gdk_event_get_event_type(eventPtr);
type = fixGdkEventTypeValues(type);
switch (type) {
case GDK.GDK_KEY_PRESS:
setKeyState (event, eventPtr);
break;
}
gdk_event_free (eventPtr);
}
int index = 0;
if (GTK.gtk_spin_button_get_digits (handle) > 0) {
String decimalSeparator = getDecimalSeparator ();
index = string.indexOf (decimalSeparator);
if (index != -1) {
string = string.substring (0, index) + string.substring (index + 1);
}
index = 0;
}
if (string.length () > 0) {
long hAdjustment = GTK.gtk_spin_button_get_adjustment (handle);
double lower = GTK.gtk_adjustment_get_lower (hAdjustment);
if (lower < 0 && string.charAt (0) == '-') index++;
}
while (index < string.length ()) {
if (!Character.isDigit (string.charAt (index))) break;
index++;
}
event.doit = index == 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 (SWT.Verify, event);
if (!event.doit || isDisposed ()) return null;
return event.text;
}
}