| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.win32.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| |
| /** |
| * Instances of this class are controls which are capable |
| * of containing other controls. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>NO_BACKGROUND, NO_FOCUS, NO_MERGE_PAINTS, NO_REDRAW_RESIZE, NO_RADIO_GROUP, EMBEDDED, DOUBLE_BUFFERED</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>(none)</dd> |
| * </dl> |
| * <p> |
| * Note: The <code>NO_BACKGROUND</code>, <code>NO_FOCUS</code>, <code>NO_MERGE_PAINTS</code>, |
| * and <code>NO_REDRAW_RESIZE</code> styles are intended for use with <code>Canvas</code>. |
| * They can be used with <code>Composite</code> if you are drawing your own, but their |
| * behavior is undefined if they are used with subclasses of <code>Composite</code> other |
| * than <code>Canvas</code>. |
| * </p><p> |
| * Note: The <code>CENTER</code> style, although undefined for composites, has the |
| * same value as <code>EMBEDDED</code> (which is used to embed widgets from other |
| * widget toolkits into SWT). On some operating systems (GTK, Motif), this may cause |
| * the children of this compostite to be obscured. The <code>EMBEDDED</code> style |
| * is for used by other widget toolkits and should normally never be used. |
| * </p><p> |
| * This class may be subclassed by custom control implementors |
| * who are building controls that are constructed from aggregates |
| * of other controls. |
| * </p> |
| * |
| * @see Canvas |
| */ |
| |
| public class Composite extends Scrollable { |
| Layout layout; |
| int font; |
| WINDOWPOS [] lpwp; |
| Control [] tabList; |
| int layoutCount, backgroundMode; |
| static final char [] EDIT = new char [] {'E', 'D', 'I', 'T', 0}; |
| |
| /** |
| * Prevents uninitialized instances from being created outside the package. |
| */ |
| Composite () { |
| } |
| |
| /** |
| * 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 widget which will be the parent of the new instance (cannot be null) |
| * @param style the style of widget 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> |
| * </ul> |
| * |
| * @see SWT#NO_BACKGROUND |
| * @see SWT#NO_FOCUS |
| * @see SWT#NO_MERGE_PAINTS |
| * @see SWT#NO_REDRAW_RESIZE |
| * @see SWT#NO_RADIO_GROUP |
| * @see Widget#getStyle |
| */ |
| public Composite (Composite parent, int style) { |
| super (parent, style); |
| } |
| |
| Control [] _getChildren () { |
| int count = 0; |
| int hwndChild = OS.GetWindow (handle, OS.GW_CHILD); |
| if (hwndChild == 0) return new Control [0]; |
| while (hwndChild != 0) { |
| count++; |
| hwndChild = OS.GetWindow (hwndChild, OS.GW_HWNDNEXT); |
| } |
| Control [] children = new Control [count]; |
| int index = 0; |
| hwndChild = OS.GetWindow (handle, OS.GW_CHILD); |
| while (hwndChild != 0) { |
| Control control = display.getControl (hwndChild); |
| if (control != null && control != this) { |
| children [index++] = control; |
| } |
| hwndChild = OS.GetWindow (hwndChild, OS.GW_HWNDNEXT); |
| } |
| if (count == index) return children; |
| Control [] newChildren = new Control [index]; |
| System.arraycopy (children, 0, newChildren, 0, index); |
| return newChildren; |
| } |
| |
| Control [] _getTabList () { |
| if (tabList == null) return tabList; |
| int count = 0; |
| for (int i=0; i<tabList.length; i++) { |
| if (!tabList [i].isDisposed ()) count++; |
| } |
| if (count == tabList.length) return tabList; |
| Control [] newList = new Control [count]; |
| int index = 0; |
| for (int i=0; i<tabList.length; i++) { |
| if (!tabList [i].isDisposed ()) { |
| newList [index++] = tabList [i]; |
| } |
| } |
| tabList = newList; |
| return tabList; |
| } |
| |
| /** |
| * Clears any data that has been cached by a Layout for all widgets that |
| * are in the parent hierarchy of the changed control up to and including the |
| * receiver. If an ancestor does not have a layout, it is skipped. |
| * |
| * @param changed an array of controls that changed state and require a recalculation of size |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the changed array is null any of its controls are null or have been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</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> |
| * |
| * @since 3.1 |
| */ |
| public void changed (Control[] changed) { |
| checkWidget (); |
| if (changed == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| for (int i=0; i<changed.length; i++) { |
| Control control = changed [i]; |
| if (control == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); |
| boolean ancestor = false; |
| Composite composite = control.parent; |
| while (composite != null) { |
| ancestor = composite == this; |
| if (ancestor) break; |
| composite = composite.parent; |
| } |
| if (!ancestor) error (SWT.ERROR_INVALID_PARENT); |
| } |
| for (int i=0; i<changed.length; i++) { |
| Control child = changed [i]; |
| Composite composite = child.parent; |
| while (child != this) { |
| if (composite.layout == null || !composite.layout.flushCache (child)) { |
| composite.state |= LAYOUT_CHANGED; |
| } |
| child = composite; |
| composite = child.parent; |
| } |
| } |
| } |
| |
| void checkBuffered () { |
| if (OS.IsWinCE || (state & CANVAS) == 0) { |
| super.checkBuffered (); |
| } |
| } |
| |
| protected void checkSubclass () { |
| /* Do nothing - Subclassing is allowed */ |
| } |
| |
| Control [] computeTabList () { |
| Control result [] = super.computeTabList (); |
| if (result.length == 0) return result; |
| Control [] list = tabList != null ? _getTabList () : _getChildren (); |
| for (int i=0; i<list.length; i++) { |
| Control child = list [i]; |
| Control [] childList = child.computeTabList (); |
| if (childList.length != 0) { |
| Control [] newResult = new Control [result.length + childList.length]; |
| System.arraycopy (result, 0, newResult, 0, result.length); |
| System.arraycopy (childList, 0, newResult, result.length, childList.length); |
| result = newResult; |
| } |
| } |
| return result; |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| Point size; |
| if (layout != null) { |
| if (wHint == SWT.DEFAULT || hHint == SWT.DEFAULT) { |
| changed |= (state & LAYOUT_CHANGED) != 0; |
| state &= ~LAYOUT_CHANGED; |
| size = layout.computeSize (this, wHint, hHint, changed); |
| } else { |
| size = new Point (wHint, hHint); |
| } |
| } else { |
| size = minimumSize (wHint, hHint, changed); |
| } |
| if (size.x == 0) size.x = DEFAULT_WIDTH; |
| if (size.y == 0) size.y = DEFAULT_HEIGHT; |
| if (wHint != SWT.DEFAULT) size.x = wHint; |
| if (hHint != SWT.DEFAULT) size.y = hHint; |
| Rectangle trim = computeTrim (0, 0, size.x, size.y); |
| return new Point (trim.width, trim.height); |
| } |
| |
| void createHandle () { |
| super.createHandle (); |
| state |= CANVAS; |
| if ((style & (SWT.H_SCROLL | SWT.V_SCROLL)) == 0) { |
| state |= THEME_BACKGROUND; |
| } |
| } |
| |
| Composite findDeferredControl () { |
| return layoutCount > 0 ? this : parent.findDeferredControl (); |
| } |
| |
| Menu [] findMenus (Control control) { |
| if (control == this) return new Menu [0]; |
| Menu result [] = super.findMenus (control); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| Menu [] menuList = child.findMenus (control); |
| if (menuList.length != 0) { |
| Menu [] newResult = new Menu [result.length + menuList.length]; |
| System.arraycopy (result, 0, newResult, 0, result.length); |
| System.arraycopy (menuList, 0, newResult, result.length, menuList.length); |
| result = newResult; |
| } |
| } |
| return result; |
| } |
| |
| void fixChildren (Shell newShell, Shell oldShell, Decorations newDecorations, Decorations oldDecorations, Menu [] menus) { |
| super.fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| children [i].fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus); |
| } |
| } |
| |
| void fixTabList (Control control) { |
| if (tabList == null) return; |
| int count = 0; |
| for (int i=0; i<tabList.length; i++) { |
| if (tabList [i] == control) count++; |
| } |
| if (count == 0) return; |
| Control [] newList = null; |
| int length = tabList.length - count; |
| if (length != 0) { |
| newList = new Control [length]; |
| int index = 0; |
| for (int i=0; i<tabList.length; i++) { |
| if (tabList [i] != control) { |
| newList [index++] = tabList [i]; |
| } |
| } |
| } |
| tabList = newList; |
| } |
| |
| /** |
| * WARNING API STILL UNDER CONSTRUCTION AND SUBJECT TO CHANGE |
| * |
| * @since 3.2 |
| */ |
| /*public*/ int getBackgroundMode () { |
| checkWidget (); |
| return backgroundMode; |
| } |
| |
| /** |
| * Returns a (possibly empty) array containing the receiver's children. |
| * Children are returned in the order that they are drawn. The topmost |
| * control appears at the beginning of the array. Subsequent controls |
| * draw beneath this control and appear later in the array. |
| * <p> |
| * Note: This is not the actual structure used by the receiver |
| * to maintain its list of children, so modifying the array will |
| * not affect the receiver. |
| * </p> |
| * |
| * @return an array of children |
| * |
| * @see Control#moveAbove |
| * @see Control#moveBelow |
| * |
| * @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 Control [] getChildren () { |
| checkWidget (); |
| return _getChildren (); |
| } |
| |
| int getChildrenCount () { |
| /* |
| * NOTE: The current implementation will count |
| * non-registered children. |
| */ |
| int count = 0; |
| int hwndChild = OS.GetWindow (handle, OS.GW_CHILD); |
| while (hwndChild != 0) { |
| count++; |
| hwndChild = OS.GetWindow (hwndChild, OS.GW_HWNDNEXT); |
| } |
| return count; |
| } |
| |
| /** |
| * Returns layout which is associated with the receiver, or |
| * null if one has not been set. |
| * |
| * @return the receiver's layout or null |
| * |
| * @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 Layout getLayout () { |
| checkWidget (); |
| return layout; |
| } |
| |
| /** |
| * Gets the (possibly empty) tabbing order for the control. |
| * |
| * @return tabList the ordered list of controls representing the tab order |
| * |
| * @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 #setTabList |
| */ |
| public Control [] getTabList () { |
| checkWidget (); |
| Control [] tabList = _getTabList (); |
| if (tabList == null) { |
| int count = 0; |
| Control [] list =_getChildren (); |
| for (int i=0; i<list.length; i++) { |
| if (list [i].isTabGroup ()) count++; |
| } |
| tabList = new Control [count]; |
| int index = 0; |
| for (int i=0; i<list.length; i++) { |
| if (list [i].isTabGroup ()) { |
| tabList [index++] = list [i]; |
| } |
| } |
| } |
| return tabList; |
| } |
| |
| boolean hooksKeys () { |
| return hooks (SWT.KeyDown) || hooks (SWT.KeyUp); |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver has deferred |
| * the performing of layout, and <code>false</code> otherwise. |
| * |
| * @return the receiver's deferred layout state |
| * |
| * @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 #setLayoutDeferred(boolean) |
| * @see #isLayoutDeferred() |
| * |
| * @since 3.1 |
| */ |
| public boolean getLayoutDeferred () { |
| checkWidget (); |
| return layoutCount > 0 ; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver or any ancestor |
| * up to and including the receiver's nearest ancestor shell |
| * has deferred the performing of layouts. Otherwise, <code>false</code> |
| * is returned. |
| * |
| * @return the receiver's deferred layout state |
| * |
| * @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 #setLayoutDeferred(boolean) |
| * @see #getLayoutDeferred() |
| * |
| * @since 3.1 |
| */ |
| public boolean isLayoutDeferred () { |
| checkWidget (); |
| return findDeferredControl () != null; |
| } |
| |
| /** |
| * If the receiver has a layout, asks the layout to <em>lay out</em> |
| * (that is, set the size and location of) the receiver's children. |
| * If the receiver does not have a layout, do nothing. |
| * <p> |
| * This is equivalent to calling <code>layout(true)</code>. |
| * </p> |
| * |
| * @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 layout () { |
| checkWidget (); |
| layout (true); |
| } |
| |
| /** |
| * If the receiver has a layout, asks the layout to <em>lay out</em> |
| * (that is, set the size and location of) the receiver's children. |
| * If the argument is <code>true</code> the layout must not rely |
| * on any information it has cached about the immediate children. If it |
| * is <code>false</code> the layout may (potentially) optimize the |
| * work it is doing by assuming that none of the receiver's |
| * children has changed state since the last layout. |
| * If the receiver does not have a layout, do nothing. |
| * <p> |
| * If a child is resized as a result of a call to layout, the |
| * resize event will invoke the layout of the child. The layout |
| * will cascade down through all child widgets in the receiver's widget |
| * tree until a child is encountered that does not resize. Note that |
| * a layout due to a resize will not flush any cached information |
| * (same as <code>layout(false)</code>).</p> |
| * |
| * @param changed <code>true</code> if the layout must flush its caches, and <code>false</code> otherwise |
| * |
| * @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 layout (boolean changed) { |
| checkWidget (); |
| if (layout == null) return; |
| layout (changed, false); |
| } |
| |
| /** |
| * If the receiver has a layout, asks the layout to <em>lay out</em> |
| * (that is, set the size and location of) the receiver's children. |
| * If the changed argument is <code>true</code> the layout must not rely |
| * on any information it has cached about its children. If it |
| * is <code>false</code> the layout may (potentially) optimize the |
| * work it is doing by assuming that none of the receiver's |
| * children has changed state since the last layout. |
| * If the all argument is <code>true</code> the layout will cascade down |
| * through all child widgets in the receiver's widget tree, regardless of |
| * whether the child has changed size. The changed argument is applied to |
| * all layouts. If the all argument is <code>false</code>, the layout will |
| * <em>not</em> cascade down through all child widgets in the receiver's widget |
| * tree. However, if a child is resized as a result of a call to layout, the |
| * resize event will invoke the layout of the child. Note that |
| * a layout due to a resize will not flush any cached information |
| * (same as <code>layout(false)</code>).</p> |
| * |
| * @param changed <code>true</code> if the layout must flush its caches, and <code>false</code> otherwise |
| * @param all <code>true</code> if all children in the receiver's widget tree should be laid out, and <code>false</code> otherwise |
| * |
| * @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> |
| * |
| * @since 3.1 |
| */ |
| public void layout (boolean changed, boolean all) { |
| checkWidget (); |
| if (layout == null && !all) return; |
| markLayout (changed, all); |
| updateLayout (true, all); |
| } |
| |
| /** |
| * Forces a lay out (that is, sets the size and location) of all widgets that |
| * are in the parent hierarchy of the changed control up to and including the |
| * receiver. The layouts in the hierarchy must not rely on any information |
| * cached about the changed control or any of its ancestors. The layout may |
| * (potentially) optimize the work it is doing by assuming that none of the |
| * peers of the changed control have changed state since the last layout. |
| * If an ancestor does not have a layout, skip it. |
| * |
| * @param changed a control that has had a state change which requires a recalculation of its size |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the changed array is null any of its controls are null or have been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if any control in changed is not in the widget tree of the receiver</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> |
| * |
| * @since 3.1 |
| */ |
| public void layout (Control [] changed) { |
| checkWidget (); |
| if (changed == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| for (int i=0; i<changed.length; i++) { |
| Control control = changed [i]; |
| if (control == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); |
| boolean ancestor = false; |
| Composite composite = control.parent; |
| while (composite != null) { |
| ancestor = composite == this; |
| if (ancestor) break; |
| composite = composite.parent; |
| } |
| if (!ancestor) error (SWT.ERROR_INVALID_PARENT); |
| } |
| int updateCount = 0; |
| Composite [] update = new Composite [16]; |
| for (int i=0; i<changed.length; i++) { |
| Control child = changed [i]; |
| Composite composite = child.parent; |
| while (child != this) { |
| if (composite.layout != null) { |
| composite.state |= LAYOUT_NEEDED; |
| if (!composite.layout.flushCache (child)) { |
| composite.state |= LAYOUT_CHANGED; |
| } |
| } |
| if (updateCount == update.length) { |
| Composite [] newUpdate = new Composite [update.length + 16]; |
| System.arraycopy (update, 0, newUpdate, 0, update.length); |
| update = newUpdate; |
| } |
| child = update [updateCount++] = composite; |
| composite = child.parent; |
| } |
| } |
| for (int i=updateCount-1; i>=0; i--) { |
| update [i].updateLayout (true, false); |
| } |
| } |
| |
| void markLayout (boolean changed, boolean all) { |
| if (layout != null) { |
| state |= LAYOUT_NEEDED; |
| if (changed) state |= LAYOUT_CHANGED; |
| } |
| if (all) { |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| children [i].markLayout (changed, all); |
| } |
| } |
| } |
| |
| Point minimumSize (int wHint, int hHint, boolean changed) { |
| Control [] children = _getChildren (); |
| int width = 0, height = 0; |
| for (int i=0; i<children.length; i++) { |
| Rectangle rect = children [i].getBounds (); |
| width = Math.max (width, rect.x + rect.width); |
| height = Math.max (height, rect.y + rect.height); |
| } |
| return new Point (width, height); |
| } |
| |
| boolean redrawChildren () { |
| if (!super.redrawChildren ()) return false; |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| children [i].redrawChildren (); |
| } |
| return true; |
| } |
| |
| void releaseChildren (boolean destroy) { |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child != null && !child.isDisposed ()) { |
| child.release (false); |
| } |
| } |
| super.releaseChildren (destroy); |
| } |
| |
| void releaseWidget () { |
| super.releaseWidget (); |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| int hwndChild = OS.GetWindow (handle, OS.GW_CHILD); |
| if (hwndChild != 0) { |
| int threadId = OS.GetWindowThreadProcessId (hwndChild, null); |
| if (threadId != OS.GetCurrentThreadId ()) { |
| OS.SetParent (hwndChild, 0); |
| } |
| } |
| } |
| layout = null; |
| tabList = null; |
| lpwp = null; |
| } |
| |
| void removeControl (Control control) { |
| fixTabList (control); |
| resizeChildren (); |
| } |
| |
| void resizeChildren () { |
| if (lpwp == null) return; |
| do { |
| WINDOWPOS [] currentLpwp = lpwp; |
| lpwp = null; |
| if (!resizeChildren (true, currentLpwp)) { |
| resizeChildren (false, currentLpwp); |
| } |
| } while (lpwp != null); |
| } |
| |
| boolean resizeChildren (boolean defer, WINDOWPOS [] pwp) { |
| if (pwp == null) return true; |
| int hdwp = 0; |
| if (defer) { |
| hdwp = OS.BeginDeferWindowPos (pwp.length); |
| if (hdwp == 0) return false; |
| } |
| for (int i=0; i<pwp.length; i++) { |
| WINDOWPOS wp = pwp [i]; |
| if (wp != null) { |
| /* |
| * This code is intentionally commented. All widgets that |
| * are created by SWT have WS_CLIPSIBLINGS to ensure that |
| * application code does not draw outside of the control. |
| */ |
| // int count = parent.getChildrenCount (); |
| // if (count > 1) { |
| // int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); |
| // if ((bits & OS.WS_CLIPSIBLINGS) == 0) wp.flags |= OS.SWP_NOCOPYBITS; |
| // } |
| if (defer) { |
| hdwp = DeferWindowPos (hdwp, wp.hwnd, 0, wp.x, wp.y, wp.cx, wp.cy, wp.flags); |
| if (hdwp == 0) return false; |
| } else { |
| SetWindowPos (wp.hwnd, 0, wp.x, wp.y, wp.cx, wp.cy, wp.flags); |
| } |
| } |
| } |
| if (defer) return OS.EndDeferWindowPos (hdwp); |
| return true; |
| } |
| |
| void resizeEmbeddedHandle(int embeddedHandle, int width, int height) { |
| if (embeddedHandle == 0) return; |
| int [] processID = new int [1]; |
| int threadId = OS.GetWindowThreadProcessId (embeddedHandle, processID); |
| if (threadId != OS.GetCurrentThreadId ()) { |
| if (processID [0] == OS.GetCurrentProcessId ()) { |
| if (display.msgHook == 0) { |
| if (!OS.IsWinCE) { |
| display.getMsgCallback = new Callback (display, "getMsgProc", 3); |
| display.getMsgProc = display.getMsgCallback.getAddress (); |
| if (display.getMsgProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS); |
| display.msgHook = OS.SetWindowsHookEx (OS.WH_GETMESSAGE, display.getMsgProc, OS.GetLibraryHandle(), threadId); |
| OS.PostThreadMessage (threadId, OS.WM_NULL, 0, 0); |
| } |
| } |
| } |
| int flags = OS.SWP_NOZORDER | OS.SWP_DRAWFRAME | OS.SWP_NOACTIVATE | OS.SWP_ASYNCWINDOWPOS; |
| OS.SetWindowPos (embeddedHandle, 0, 0, 0, width, height, flags); |
| } |
| } |
| |
| /** |
| * WARNING API STILL UNDER CONSTRUCTION AND SUBJECT TO CHANGE |
| * |
| * @since 3.2 |
| */ |
| /*public*/ void setBackgroundMode (int mode) { |
| checkWidget (); |
| backgroundMode = mode; |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| children [i].updateBackgroundMode (mode); |
| } |
| } |
| |
| boolean setFixedFocus () { |
| checkWidget (); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.setRadioFocus ()) return true; |
| } |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.setFixedFocus ()) return true; |
| } |
| return super.setFixedFocus (); |
| } |
| |
| public boolean setFocus () { |
| checkWidget (); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.setRadioFocus ()) return true; |
| } |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.setFocus ()) return true; |
| } |
| return super.setFocus (); |
| } |
| |
| /** |
| * Sets the layout which is associated with the receiver to be |
| * the argument which may be null. |
| * |
| * @param layout the receiver's new layout or null |
| * |
| * @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 setLayout (Layout layout) { |
| checkWidget (); |
| this.layout = layout; |
| } |
| |
| /** |
| * If the argument is <code>true</code>, causes subsequent layout |
| * operations in the receiver or any of its children to be ignored. |
| * No layout of any kind can occur in the receiver or any of its |
| * children until the flag is set to false. |
| * Layout operations that occurred while the flag was |
| * <code>true</code> are remembered and when the flag is set to |
| * <code>false</code>, the layout operations are performed in an |
| * optimized manner. Nested calls to this method are stacked. |
| * |
| * @param defer the new defer state |
| * |
| * @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 #layout(boolean) |
| * @see #layout(Control[]) |
| * |
| * @since 3.1 |
| */ |
| public void setLayoutDeferred (boolean defer) { |
| if (!defer) { |
| if (--layoutCount == 0) { |
| if ((state & LAYOUT_CHILD) != 0 || (state & LAYOUT_NEEDED) != 0) { |
| updateLayout (true, true); |
| } |
| } |
| } else { |
| layoutCount++; |
| } |
| } |
| /** |
| * Sets the tabbing order for the specified controls to |
| * match the order that they occur in the argument list. |
| * |
| * @param tabList the ordered list of controls representing the tab order or null |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if a widget in the tabList is null or has been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if widget in the tabList is not in the same widget tree</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> |
| */ |
| public void setTabList (Control [] tabList) { |
| checkWidget (); |
| if (tabList != null) { |
| for (int i=0; i<tabList.length; i++) { |
| Control control = tabList [i]; |
| if (control == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); |
| if (control.parent != this) error (SWT.ERROR_INVALID_PARENT); |
| } |
| Control [] newList = new Control [tabList.length]; |
| System.arraycopy (tabList, 0, newList, 0, tabList.length); |
| tabList = newList; |
| } |
| this.tabList = tabList; |
| } |
| |
| void setResizeChildren (boolean resize) { |
| if (resize) { |
| resizeChildren (); |
| } else { |
| int count = getChildrenCount (); |
| if (count > 1 && lpwp == null) { |
| lpwp = new WINDOWPOS [count]; |
| } |
| } |
| } |
| |
| boolean setTabGroupFocus () { |
| if (isTabItem ()) return setTabItemFocus (); |
| boolean takeFocus = (style & SWT.NO_FOCUS) == 0; |
| if ((state & CANVAS) != 0) { |
| takeFocus = hooksKeys (); |
| if ((style & SWT.EMBEDDED) != 0) takeFocus = true; |
| } |
| if (takeFocus && setTabItemFocus ()) return true; |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.isTabItem () && child.setRadioFocus ()) return true; |
| } |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.isTabItem () && child.setTabItemFocus ()) return true; |
| } |
| return false; |
| } |
| |
| String toolTipText (NMTTDISPINFO hdr) { |
| if ((hdr.uFlags & OS.TTF_IDISHWND) == 0) { |
| return null; |
| } |
| int hwnd = hdr.idFrom; |
| if (hwnd == 0) return null; |
| Control control = display.getControl (hwnd); |
| if (control == null) return null; |
| return control.toolTipText; |
| } |
| |
| boolean translateMnemonic (Event event, Control control) { |
| if (super.translateMnemonic (event, control)) return true; |
| if (control != null) { |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.translateMnemonic (event, control)) return true; |
| } |
| } |
| return false; |
| } |
| |
| boolean translateTraversal (MSG msg) { |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) return false; |
| return super.translateTraversal (msg); |
| } |
| |
| void updateBackgroundColor () { |
| super.updateBackgroundColor (); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| if ((children [i].state & PARENT_BACKGROUND) != 0) { |
| children [i].updateBackgroundColor (); |
| } |
| } |
| } |
| |
| void updateBackgroundImage () { |
| super.updateBackgroundImage (); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| if ((children [i].state & PARENT_BACKGROUND) != 0) { |
| children [i].updateBackgroundImage (); |
| } |
| } |
| } |
| |
| void updateBackgroundMode (int mode) { |
| if (backgroundMode != SWT.INHERIT_NONE) return; |
| super.updateBackgroundMode (mode); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| children [i].updateBackgroundMode (mode); |
| } |
| } |
| |
| void updateFont (Font oldFont, Font newFont) { |
| super.updateFont (oldFont, newFont); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control control = children [i]; |
| if (!control.isDisposed ()) { |
| control.updateFont (oldFont, newFont); |
| } |
| } |
| } |
| |
| void updateLayout (boolean resize, boolean all) { |
| Composite parent = findDeferredControl (); |
| if (parent != null) { |
| parent.state |= LAYOUT_CHILD; |
| return; |
| } |
| if ((state & LAYOUT_NEEDED) != 0) { |
| boolean changed = (state & LAYOUT_CHANGED) != 0; |
| state &= ~(LAYOUT_NEEDED | LAYOUT_CHANGED); |
| if (resize) setResizeChildren (false); |
| layout.layout (this, changed); |
| if (resize) setResizeChildren (true); |
| } |
| if (all) { |
| state &= ~LAYOUT_CHILD; |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| children [i].updateLayout (resize, all); |
| } |
| } |
| } |
| |
| int widgetStyle () { |
| /* Force clipping of children by setting WS_CLIPCHILDREN */ |
| return super.widgetStyle () | OS.WS_CLIPCHILDREN; |
| } |
| |
| LRESULT WM_ERASEBKGND (int wParam, int lParam) { |
| LRESULT result = super.WM_ERASEBKGND (wParam, lParam); |
| if (result != null) return result; |
| if ((state & CANVAS) != 0) { |
| /* Return zero to indicate that the background was not erased */ |
| if ((style & SWT.NO_BACKGROUND) != 0) return LRESULT.ZERO; |
| } |
| return result; |
| } |
| |
| LRESULT WM_GETDLGCODE (int wParam, int lParam) { |
| LRESULT result = super.WM_GETDLGCODE (wParam, lParam); |
| if (result != null) return result; |
| if ((state & CANVAS) != 0) { |
| int flags = 0; |
| if (hooksKeys ()) { |
| flags |= OS.DLGC_WANTALLKEYS | OS.DLGC_WANTARROWS | OS.DLGC_WANTTAB; |
| } |
| if ((style & SWT.NO_FOCUS) != 0) flags |= OS.DLGC_STATIC; |
| if (OS.GetWindow (handle, OS.GW_CHILD) != 0) flags |= OS.DLGC_STATIC; |
| if (flags != 0) return new LRESULT (flags); |
| } |
| return result; |
| } |
| |
| LRESULT WM_GETFONT (int wParam, int lParam) { |
| LRESULT result = super.WM_GETFONT (wParam, lParam); |
| if (result != null) return result; |
| int code = callWindowProc (handle, OS.WM_GETFONT, wParam, lParam); |
| if (code != 0) return new LRESULT (code); |
| if (font == 0) font = defaultFont (); |
| return new LRESULT (font); |
| } |
| |
| LRESULT WM_LBUTTONDOWN (int wParam, int lParam) { |
| LRESULT result = super.WM_LBUTTONDOWN (wParam, lParam); |
| if (result == LRESULT.ZERO) return result; |
| |
| /* Set focus for a canvas with no children */ |
| if ((state & CANVAS) != 0) { |
| if ((style & SWT.NO_FOCUS) == 0 && hooksKeys ()) { |
| if (OS.GetWindow (handle, OS.GW_CHILD) == 0) setFocus (); |
| } |
| } |
| return result; |
| } |
| |
| LRESULT WM_NCPAINT (int wParam, int lParam) { |
| LRESULT result = super.WM_NCPAINT (wParam, lParam); |
| if (result != null) return result; |
| if ((state & CANVAS) != 0) { |
| result = wmNCPaint (handle, wParam, lParam); |
| } |
| return result; |
| } |
| |
| LRESULT WM_NOTIFY (int wParam, int lParam) { |
| if (!OS.IsWinCE) { |
| NMHDR hdr = new NMHDR (); |
| OS.MoveMemory (hdr, lParam, NMHDR.sizeof); |
| switch (hdr.code) { |
| /* |
| * Feature in Windows. When the tool tip control is |
| * created, the parent of the tool tip is the shell. |
| * If SetParent () is used to reparent the tool bar |
| * into a new shell, the tool tip is not reparented |
| * and pops up underneath the new shell. The fix is |
| * to make sure the tool tip is a topmost window. |
| */ |
| case OS.TTN_SHOW: |
| case OS.TTN_POP: { |
| /* |
| * Bug in Windows 98 and NT. Setting the tool tip to be the |
| * top most window using HWND_TOPMOST can result in a parent |
| * dialog shell being moved behind its parent if the dialog |
| * has a sibling that is currently on top. The fix is to |
| * lock the z-order of the active window. |
| * |
| * Feature in Windows. Using SetWindowPos() with HWND_NOTOPMOST |
| * to clear the topmost state of a window whose parent is already |
| * topmost clears the topmost state of the parent. The fix is to |
| * check if the parent is already on top and neither set or clear |
| * the topmost status of the tool tip. |
| */ |
| int hwndParent = hdr.hwndFrom; |
| do { |
| hwndParent = OS.GetParent (hwndParent); |
| if (hwndParent == 0) break; |
| int bits = OS.GetWindowLong (hwndParent, OS.GWL_EXSTYLE); |
| if ((bits & OS.WS_EX_TOPMOST) != 0) break; |
| } while (true); |
| if (hwndParent != 0) break; |
| display.lockActiveWindow = true; |
| int flags = OS.SWP_NOACTIVATE | OS.SWP_NOMOVE | OS.SWP_NOSIZE; |
| int hwndInsertAfter = hdr.code == OS.TTN_SHOW ? OS.HWND_TOPMOST : OS.HWND_NOTOPMOST; |
| SetWindowPos (hdr.hwndFrom, hwndInsertAfter, 0, 0, 0, 0, flags); |
| display.lockActiveWindow = false; |
| break; |
| } |
| /* |
| * Bug in Windows 98. For some reason, the tool bar control |
| * sends both TTN_GETDISPINFOW and TTN_GETDISPINFOA to get |
| * the tool tip text and the tab folder control sends only |
| * TTN_GETDISPINFOW. The fix is to handle only TTN_GETDISPINFOW, |
| * even though it should never be sent on Windows 98. |
| * |
| * NOTE: Because the size of NMTTDISPINFO differs between |
| * Windows 98 and NT, guard against the case where the wrong |
| * kind of message occurs by inlining the memory moves and |
| * the UNICODE conversion code. |
| */ |
| case OS.TTN_GETDISPINFOA: |
| case OS.TTN_GETDISPINFOW: { |
| NMTTDISPINFO lpnmtdi; |
| if (hdr.code == OS.TTN_GETDISPINFOA) { |
| lpnmtdi = new NMTTDISPINFOA (); |
| OS.MoveMemory ((NMTTDISPINFOA)lpnmtdi, lParam, NMTTDISPINFOA.sizeof); |
| } else { |
| lpnmtdi = new NMTTDISPINFOW (); |
| OS.MoveMemory ((NMTTDISPINFOW)lpnmtdi, lParam, NMTTDISPINFOW.sizeof); |
| } |
| String string = toolTipText (lpnmtdi); |
| if (string != null) { |
| Shell shell = getShell (); |
| string = Display.withCrLf (string); |
| int length = string.length (); |
| char [] chars = new char [length + 1]; |
| string.getChars (0, length, chars, 0); |
| |
| /* |
| * Ensure that the orientation of the tool tip matches |
| * the orientation of the control. |
| */ |
| int hwnd = hdr.idFrom; |
| if (hwnd != 0 && ((lpnmtdi.uFlags & OS.TTF_IDISHWND) != 0)) { |
| Control control = display.getControl (hwnd); |
| if (control != null) { |
| if ((control.getStyle () & SWT.RIGHT_TO_LEFT) != 0) { |
| lpnmtdi.uFlags |= OS.TTF_RTLREADING; |
| } else { |
| lpnmtdi.uFlags &= ~OS.TTF_RTLREADING; |
| } |
| } |
| } |
| |
| if (hdr.code == OS.TTN_GETDISPINFOA) { |
| byte [] bytes = new byte [chars.length * 2]; |
| OS.WideCharToMultiByte (OS.CP_ACP, 0, chars, chars.length, bytes, bytes.length, null, null); |
| shell.setToolTipText (lpnmtdi, bytes); |
| OS.MoveMemory (lParam, (NMTTDISPINFOA)lpnmtdi, NMTTDISPINFOA.sizeof); |
| } else { |
| shell.setToolTipText (lpnmtdi, chars); |
| OS.MoveMemory (lParam, (NMTTDISPINFOW)lpnmtdi, NMTTDISPINFOW.sizeof); |
| } |
| return LRESULT.ZERO; |
| } |
| break; |
| } |
| } |
| } |
| return super.WM_NOTIFY (wParam, lParam); |
| } |
| |
| LRESULT WM_PARENTNOTIFY (int wParam, int lParam) { |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| if ((wParam & 0xFFFF) == OS.WM_CREATE) { |
| RECT rect = new RECT (); |
| OS.GetClientRect (handle, rect); |
| resizeEmbeddedHandle (lParam, rect.right - rect.left, rect.bottom - rect.top); |
| } |
| } |
| return super.WM_PARENTNOTIFY (wParam, lParam); |
| } |
| |
| LRESULT WM_PAINT (int wParam, int lParam) { |
| if ((state & CANVAS) == 0) { |
| return super.WM_PAINT (wParam, lParam); |
| } |
| |
| /* Set the clipping bits */ |
| int oldBits = 0, newBits = 0; |
| if (!OS.IsWinCE) { |
| oldBits = OS.GetWindowLong (handle, OS.GWL_STYLE); |
| newBits = oldBits | OS.WS_CLIPSIBLINGS | OS.WS_CLIPCHILDREN; |
| if (newBits != oldBits) OS.SetWindowLong (handle, OS.GWL_STYLE, newBits); |
| } |
| |
| /* Paint the control and the background */ |
| PAINTSTRUCT ps = new PAINTSTRUCT (); |
| if (hooks (SWT.Paint)) { |
| |
| /* Create the paint GC */ |
| GCData data = new GCData (); |
| data.ps = ps; |
| data.hwnd = handle; |
| GC gc = GC.win32_new (this, data); |
| |
| /* Get the system region for the paint HDC */ |
| int sysRgn = 0; |
| if ((style & (SWT.NO_MERGE_PAINTS | SWT.DOUBLE_BUFFERED)) != 0) { |
| sysRgn = OS.CreateRectRgn (0, 0, 0, 0); |
| if (OS.GetRandomRgn (gc.handle, sysRgn, OS.SYSRGN) == 1) { |
| if (OS.WIN32_VERSION >= OS.VERSION (4, 10)) { |
| if ((OS.GetLayout (gc.handle) & OS.LAYOUT_RTL) != 0) { |
| int nBytes = OS.GetRegionData (sysRgn, 0, null); |
| int [] lpRgnData = new int [nBytes / 4]; |
| OS.GetRegionData (sysRgn, nBytes, lpRgnData); |
| int newSysRgn = OS.ExtCreateRegion (new float [] {-1, 0, 0, 1, 0, 0}, nBytes, lpRgnData); |
| OS.DeleteObject (sysRgn); |
| sysRgn = newSysRgn; |
| } |
| } |
| if (OS.IsWinNT) { |
| POINT pt = new POINT(); |
| OS.MapWindowPoints (0, handle, pt, 1); |
| OS.OffsetRgn (sysRgn, pt.x, pt.y); |
| } |
| } |
| } |
| |
| /* Send the paint event */ |
| int width = ps.right - ps.left; |
| int height = ps.bottom - ps.top; |
| if (width != 0 && height != 0) { |
| GC paintGC = null; |
| Image image = null; |
| if ((style & SWT.DOUBLE_BUFFERED) != 0) { |
| image = new Image (display, width, height); |
| paintGC = gc; |
| gc = new GC (image, style & SWT.RIGHT_TO_LEFT); |
| gc.setForeground (getForeground ()); |
| gc.setBackground (getBackground ()); |
| gc.setFont (getFont ()); |
| if ((style & SWT.NO_BACKGROUND) != 0) { |
| paintGC.copyArea (image, ps.left, ps.top); |
| } else { |
| RECT rect = new RECT (); |
| OS.SetRect (rect, 0, 0, width, height); |
| drawBackground (gc.handle, rect); |
| } |
| OS.OffsetRgn (sysRgn, -ps.left, -ps.top); |
| OS.SelectClipRgn (gc.handle, sysRgn); |
| OS.OffsetRgn (sysRgn, ps.left, ps.top); |
| OS.SetMetaRgn (gc.handle); |
| OS.SetWindowOrgEx (gc.handle, ps.left, ps.top, null); |
| OS.SetBrushOrgEx (gc.handle, ps.left, ps.top, null); |
| } |
| Event event = new Event (); |
| event.gc = gc; |
| RECT rect = null; |
| if ((style & SWT.NO_MERGE_PAINTS) != 0 && OS.GetRgnBox (sysRgn, rect = new RECT ()) == OS.COMPLEXREGION) { |
| int nBytes = OS.GetRegionData (sysRgn, 0, null); |
| int [] lpRgnData = new int [nBytes / 4]; |
| OS.GetRegionData (sysRgn, nBytes, lpRgnData); |
| int count = lpRgnData [2]; |
| for (int i=0; i<count; i++) { |
| int offset = 8 + (i << 2); |
| OS.SetRect (rect, lpRgnData [offset], lpRgnData [offset + 1], lpRgnData [offset + 2], lpRgnData [offset + 3]); |
| if ((style & (SWT.DOUBLE_BUFFERED | SWT.NO_BACKGROUND)) == 0) { |
| drawBackground (gc.handle, rect); |
| } |
| event.x = rect.left; |
| event.y = rect.top; |
| event.width = rect.right - rect.left; |
| event.height = rect.bottom - rect.top; |
| event.count = count - 1 - i; |
| sendEvent (SWT.Paint, event); |
| } |
| } else { |
| if ((style & (SWT.DOUBLE_BUFFERED | SWT.NO_BACKGROUND)) == 0) { |
| if (rect == null) rect = new RECT (); |
| OS.SetRect (rect, ps.left, ps.top, ps.right, ps.bottom); |
| drawBackground (gc.handle, rect); |
| } |
| event.x = ps.left; |
| event.y = ps.top; |
| event.width = width; |
| event.height = height; |
| sendEvent (SWT.Paint, event); |
| } |
| // widget could be disposed at this point |
| event.gc = null; |
| if ((style & SWT.DOUBLE_BUFFERED) != 0) { |
| gc.dispose(); |
| if (!isDisposed ()) { |
| paintGC.drawImage (image, ps.left, ps.top); |
| } |
| image.dispose (); |
| gc = paintGC; |
| } |
| } |
| |
| /* Dispose the paint GC */ |
| gc.dispose (); |
| if (sysRgn != 0) OS.DeleteObject (sysRgn); |
| } else { |
| int hDC = OS.BeginPaint (handle, ps); |
| if ((style & SWT.NO_BACKGROUND) == 0) { |
| RECT rect = new RECT (); |
| OS.SetRect (rect, ps.left, ps.top, ps.right, ps.bottom); |
| drawBackground (hDC, rect); |
| } |
| OS.EndPaint (handle, ps); |
| } |
| |
| /* Restore the clipping bits */ |
| if (!OS.IsWinCE && !isDisposed ()) { |
| if (newBits != oldBits) { |
| /* |
| * It is possible (but unlikely), that application |
| * code could have disposed the widget in the paint |
| * event. If this happens, don't attempt to restore |
| * the style. |
| */ |
| if (!isDisposed ()) { |
| OS.SetWindowLong (handle, OS.GWL_STYLE, oldBits); |
| } |
| } |
| } |
| return LRESULT.ZERO; |
| } |
| |
| LRESULT WM_PRINTCLIENT (int wParam, int lParam) { |
| LRESULT result = super.WM_PRINTCLIENT (wParam, lParam); |
| if (result != null) return result; |
| if ((state & CANVAS) != 0) { |
| forceResize (); |
| int nSavedDC = OS.SaveDC (wParam); |
| RECT rect = new RECT (); |
| OS.GetClientRect (handle, rect); |
| if ((style & SWT.NO_BACKGROUND) == 0) { |
| drawBackground (wParam, rect); |
| } |
| if (hooks (SWT.Paint) || filters (SWT.Paint)) { |
| GCData data = new GCData (); |
| data.device = display; |
| GC gc = GC.win32_new (wParam, data); |
| Event event = new Event (); |
| event.gc = gc; |
| event.x = rect.left; |
| event.y = rect.top; |
| event.width = rect.right - rect.left; |
| event.height = rect.bottom - rect.top; |
| sendEvent (SWT.Paint, event); |
| event.gc = null; |
| gc.dispose (); |
| } |
| OS.RestoreDC (wParam, nSavedDC); |
| } |
| return result; |
| } |
| |
| LRESULT WM_SETFONT (int wParam, int lParam) { |
| return super.WM_SETFONT (font = wParam, lParam); |
| } |
| |
| LRESULT WM_SIZE (int wParam, int lParam) { |
| |
| /* Begin deferred window positioning */ |
| setResizeChildren (false); |
| |
| /* Resize and Layout */ |
| LRESULT result = super.WM_SIZE (wParam, lParam); |
| /* |
| * It is possible (but unlikely), that application |
| * code could have disposed the widget in the resize |
| * event. If this happens, end the processing of the |
| * Windows message by returning the result of the |
| * WM_SIZE message. |
| */ |
| if (isDisposed ()) return result; |
| if (layout != null) { |
| markLayout (false, false); |
| updateLayout (false, false); |
| } |
| |
| /* End deferred window positioning */ |
| setResizeChildren (true); |
| |
| /* Damage the widget to cause a repaint */ |
| if (OS.IsWindowVisible (handle)) { |
| if ((state & CANVAS) != 0) { |
| if ((style & SWT.NO_REDRAW_RESIZE) == 0) { |
| if (hooks (SWT.Paint)) { |
| OS.InvalidateRect (handle, null, true); |
| } |
| } |
| } |
| if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { |
| if (findThemeControl () != null) redrawChildren (); |
| } |
| } |
| |
| /* Resize the embedded window */ |
| if ((state & CANVAS) != 0 && (style & SWT.EMBEDDED) != 0) { |
| resizeEmbeddedHandle (OS.GetWindow (handle, OS.GW_CHILD), lParam & 0xFFFF, lParam >> 16); |
| } |
| return result; |
| } |
| |
| LRESULT WM_SYSCOLORCHANGE (int wParam, int lParam) { |
| int hwndChild = OS.GetWindow (handle, OS.GW_CHILD); |
| while (hwndChild != 0) { |
| OS.SendMessage (hwndChild, OS.WM_SYSCOLORCHANGE, 0, 0); |
| hwndChild = OS.GetWindow (hwndChild, OS.GW_HWNDNEXT); |
| } |
| return null; |
| } |
| |
| LRESULT WM_SYSCOMMAND (int wParam, int lParam) { |
| LRESULT result = super.WM_SYSCOMMAND (wParam, lParam); |
| if (result != null) return result; |
| |
| /* |
| * Check to see if the command is a system command or |
| * a user menu item that was added to the system menu. |
| */ |
| if ((wParam & 0xF000) == 0) return result; |
| |
| /* |
| * Bug in Windows. When a vertical or horizontal scroll bar is |
| * hidden or shown while the opposite scroll bar is being scrolled |
| * by the user (with WM_HSCROLL code SB_LINEDOWN), the scroll bar |
| * does not redraw properly. The fix is to detect this case and |
| * redraw the non-client area. |
| */ |
| if (!OS.IsWinCE) { |
| int cmd = wParam & 0xFFF0; |
| switch (cmd) { |
| case OS.SC_HSCROLL: |
| case OS.SC_VSCROLL: |
| boolean showHBar = horizontalBar != null && horizontalBar.getVisible (); |
| boolean showVBar = verticalBar != null && verticalBar.getVisible (); |
| int code = callWindowProc (handle, OS.WM_SYSCOMMAND, wParam, lParam); |
| if ((showHBar != (horizontalBar != null && horizontalBar.getVisible ())) || |
| (showVBar != (verticalBar != null && verticalBar.getVisible ()))) { |
| int flags = OS.RDW_FRAME | OS.RDW_INVALIDATE | OS.RDW_UPDATENOW; |
| OS.RedrawWindow (handle, null, 0, flags); |
| } |
| if (code == 0) return LRESULT.ZERO; |
| return new LRESULT (code); |
| } |
| } |
| /* Return the result */ |
| return result; |
| } |
| |
| LRESULT wmNCPaint (int hwnd, int wParam, int lParam) { |
| if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { |
| int bits = OS.GetWindowLong (hwnd, OS.GWL_EXSTYLE); |
| if ((bits & OS.WS_EX_CLIENTEDGE) != 0) { |
| int code = callWindowProc (hwnd, OS.WM_NCPAINT, wParam, lParam); |
| int hDC = OS.GetWindowDC (hwnd); |
| RECT rect = new RECT (); |
| OS.GetWindowRect (hwnd, rect); |
| rect.right -= rect.left; |
| rect.bottom -= rect.top; |
| rect.left = rect.top = 0; |
| int border = OS.GetSystemMetrics (OS.SM_CXEDGE); |
| OS.ExcludeClipRect (hDC, border, border, rect.right - border, rect.bottom - border); |
| int hTheme = OS.OpenThemeData (hwnd, EDIT); |
| OS.DrawThemeBackground (hTheme, hDC, OS.EP_EDITTEXT, OS.ETS_NORMAL, rect, null); |
| OS.CloseThemeData (hwnd); |
| OS.ReleaseDC (hwnd, hDC); |
| return new LRESULT (code); |
| } |
| } |
| return null; |
| } |
| |
| } |