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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Canvas.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Canvas.java | 338 |
1 files changed, 0 insertions, 338 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Canvas.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Canvas.java deleted file mode 100755 index 02ccbd6e8c..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Canvas.java +++ /dev/null @@ -1,338 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2006 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.swt.widgets; - - -import org.eclipse.swt.internal.win32.*; -import org.eclipse.swt.*; -import org.eclipse.swt.graphics.*; - -/** - * Instances of this class provide a surface for drawing - * arbitrary graphics. - * <dl> - * <dt><b>Styles:</b></dt> - * <dd>(none)</dd> - * <dt><b>Events:</b></dt> - * <dd>(none)</dd> - * </dl> - * <p> - * This class may be subclassed by custom control implementors - * who are building controls that are <em>not</em> constructed - * from aggregates of other controls. That is, they are either - * painted using SWT graphics calls or are handled by native - * methods. - * </p> - * - * @see Composite - */ - -public class Canvas extends Composite { - Caret caret; - -/** - * Prevents uninitialized instances from being created outside the package. - */ -Canvas () { -} - -/** - * Constructs a new instance of this class given its parent - * and a style value describing its behavior and appearance. - * <p> - * The style value is either one of the style constants defined in - * class <code>SWT</code> which is applicable to instances of this - * class, or must be built by <em>bitwise OR</em>'ing together - * (that is, using the <code>int</code> "|" operator) two or more - * of those <code>SWT</code> style constants. The class description - * lists the style constants that are applicable to the class. - * Style bits are also inherited from superclasses. - * </p> - * - * @param parent a composite control which will be the parent of the new instance (cannot be null) - * @param style the style of control to construct - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> - * </ul> - * - * @see SWT - * @see Widget#checkSubclass - * @see Widget#getStyle - */ -public Canvas (Composite parent, int style) { - super (parent, style); -} - -void clearArea (int x, int y, int width, int height) { - checkWidget (); - if (OS.IsWindowVisible (handle)) { - RECT rect = new RECT (); - OS.SetRect (rect, x, y, x + width, y + height); - int hDC = OS.GetDCEx (handle, 0, OS.DCX_CACHE | OS.DCX_CLIPCHILDREN | OS.DCX_CLIPSIBLINGS); - drawBackground (hDC, rect); - OS.ReleaseDC (handle, hDC); - } -} - -/** - * Returns the caret. - * <p> - * The caret for the control is automatically hidden - * and shown when the control is painted or resized, - * when focus is gained or lost and when an the control - * is scrolled. To avoid drawing on top of the caret, - * the programmer must hide and show the caret when - * drawing in the window any other time. - * </p> - * - * @return the caret - * - * @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 Caret getCaret () { - checkWidget (); - return caret; -} - -void releaseChildren (boolean destroy) { - if (caret != null) { - caret.release (false); - caret = null; - } - super.releaseChildren (destroy); -} - -/** - * Fills the interior of the rectangle specified by the arguments, - * with the receiver's background. - * - * @param gc the gc where the rectangle is to be filled - * @param x the x coordinate of the rectangle to be filled - * @param y the y coordinate of the rectangle to be filled - * @param width the width of the rectangle to be filled - * @param height the height of the rectangle to be filled - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the gc has been disposed</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 3.2 - */ -public void drawBackground (GC gc, int x, int y, int width, int height) { - checkWidget (); - if (gc == null) error (SWT.ERROR_NULL_ARGUMENT); - if (gc.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); - RECT rect = new RECT (); - OS.SetRect (rect, x, y, x + width, y + height); - int hDC = gc.handle; - int pixel = background == -1 ? OS.GetBkColor (hDC) : -1; - drawBackground (hDC, rect, pixel); -} - -/** - * Scrolls a rectangular area of the receiver by first copying - * the source area to the destination and then causing the area - * of the source which is not covered by the destination to - * be repainted. Children that intersect the rectangle are - * optionally moved during the operation. In addition, outstanding - * paint events are flushed before the source area is copied to - * ensure that the contents of the canvas are drawn correctly. - * - * @param destX the x coordinate of the destination - * @param destY the y coordinate of the destination - * @param x the x coordinate of the source - * @param y the y coordinate of the source - * @param width the width of the area - * @param height the height of the area - * @param all <code>true</code>if children should be scrolled, 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 scroll (int destX, int destY, int x, int y, int width, int height, boolean all) { - checkWidget (); - forceResize (); - boolean isFocus = caret != null && caret.isFocusCaret (); - if (isFocus) caret.killFocus (); - RECT sourceRect = new RECT (); - OS.SetRect (sourceRect, x, y, x + width, y + height); - RECT clientRect = new RECT (); - OS.GetClientRect (handle, clientRect); - if (OS.IntersectRect (clientRect, sourceRect, clientRect)) { - if (OS.IsWinCE) { - OS.UpdateWindow (handle); - } else { - int flags = OS.RDW_UPDATENOW | OS.RDW_ALLCHILDREN; - OS.RedrawWindow (handle, null, 0, flags); - } - } - int deltaX = destX - x, deltaY = destY - y; - if (findImageControl () != null) { - if (OS.IsWinCE) { - OS.InvalidateRect (handle, sourceRect, true); - } else { - int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE; - if (all) flags |= OS.RDW_ALLCHILDREN; - OS.RedrawWindow (handle, sourceRect, 0, flags); - } - OS.OffsetRect (sourceRect, deltaX, deltaY); - if (OS.IsWinCE) { - OS.InvalidateRect (handle, sourceRect, true); - } else { - int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE; - if (all) flags |= OS.RDW_ALLCHILDREN; - OS.RedrawWindow (handle, sourceRect, 0, flags); - } - } else { - int flags = OS.SW_INVALIDATE | OS.SW_ERASE; - /* - * Feature in Windows. If any child in the widget tree partially - * intersects the scrolling rectangle, Windows moves the child - * and copies the bits that intersect the scrolling rectangle but - * does not redraw the child. - * - * Feature in Windows. When any child in the widget tree does not - * intersect the scrolling rectangle but the parent does intersect, - * Windows does not move the child. This is the documented (but - * strange) Windows behavior. - * - * The fix is to not use SW_SCROLLCHILDREN and move the children - * explicitly after scrolling. - */ -// if (all) flags |= OS.SW_SCROLLCHILDREN; - OS.ScrollWindowEx (handle, deltaX, deltaY, sourceRect, null, 0, null, flags); - } - if (all) { - Control [] children = _getChildren (); - for (int i=0; i<children.length; i++) { - Control child = children [i]; - Rectangle rect = child.getBounds (); - if (Math.min (x + width, rect.x + rect.width) >= Math.max (x, rect.x) && - Math.min (y + height, rect.y + rect.height) >= Math.max (y, rect.y)) { - child.setLocation (rect.x + deltaX, rect.y + deltaY); - } - } - } - if (isFocus) caret.setFocus (); -} - -/** - * Sets the receiver's caret. - * <p> - * The caret for the control is automatically hidden - * and shown when the control is painted or resized, - * when focus is gained or lost and when an the control - * is scrolled. To avoid drawing on top of the caret, - * the programmer must hide and show the caret when - * drawing in the window any other time. - * </p> - * @param caret the new caret for the receiver, may be null - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the caret has been disposed</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 setCaret (Caret caret) { - checkWidget (); - Caret newCaret = caret; - Caret oldCaret = this.caret; - this.caret = newCaret; - if (hasFocus ()) { - if (oldCaret != null) oldCaret.killFocus (); - if (newCaret != null) { - if (newCaret.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT); - newCaret.setFocus (); - } - } -} - -public void setFont (Font font) { - checkWidget (); - if (caret != null) caret.setFont (font); - super.setFont (font); -} - -LRESULT WM_INPUTLANGCHANGE (int wParam, int lParam) { - LRESULT result = super.WM_INPUTLANGCHANGE (wParam, lParam); - if (caret != null && caret.isFocusCaret ()) { - caret.setIMEFont (); - caret.resizeIME (); - } - return result; -} - -LRESULT WM_KILLFOCUS (int wParam, int lParam) { - LRESULT result = super.WM_KILLFOCUS (wParam, lParam); - if (caret != null) caret.killFocus (); - return result; -} - -LRESULT WM_SETFOCUS (int wParam, int lParam) { - LRESULT result = super.WM_SETFOCUS (wParam, lParam); - if (caret != null) caret.setFocus (); - return result; -} - -LRESULT WM_SIZE (int wParam, int lParam) { - LRESULT result = super.WM_SIZE (wParam, lParam); - if (caret != null && caret.isFocusCaret ()) caret.resizeIME (); - return result; -} - -LRESULT WM_WINDOWPOSCHANGED (int wParam, int lParam) { - LRESULT result = super.WM_WINDOWPOSCHANGED (wParam, lParam); - if (result != null) return result; - /* - * Bug in Windows. When a window with style WS_EX_LAYOUTRTL - * that contains a caret is resized, Windows does not move the - * caret in relation to the mirrored origin in the top right. - * The fix is to hide the caret in WM_WINDOWPOSCHANGING and - * show the caret in WM_WINDOWPOSCHANGED. - */ - boolean isFocus = (style & SWT.RIGHT_TO_LEFT) != 0 && caret != null && caret.isFocusCaret (); - if (isFocus) caret.setFocus (); - return result; -} - -LRESULT WM_WINDOWPOSCHANGING (int wParam, int lParam) { - LRESULT result = super.WM_WINDOWPOSCHANGING (wParam, lParam); - if (result != null) return result; - /* - * Bug in Windows. When a window with style WS_EX_LAYOUTRTL - * that contains a caret is resized, Windows does not move the - * caret in relation to the mirrored origin in the top right. - * The fix is to hide the caret in WM_WINDOWPOSCHANGING and - * show the caret in WM_WINDOWPOSCHANGED. - */ - boolean isFocus = (style & SWT.RIGHT_TO_LEFT) != 0 && caret != null && caret.isFocusCaret (); - if (isFocus) caret.killFocus (); - return result; -} - -} |