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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Canvas.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Canvas.java | 329 |
1 files changed, 0 insertions, 329 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Canvas.java b/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Canvas.java deleted file mode 100755 index 439c284228..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Canvas.java +++ /dev/null @@ -1,329 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2008 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.swt.widgets; - - -import org.eclipse.swt.internal.motif.*; -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 - * @see <a href="http://www.eclipse.org/swt/snippets/#canvas">Canvas snippets</a> - * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> - * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> - */ -public class Canvas extends Composite { - Caret caret; - IME ime; - -Canvas () { - /* Do nothing */ -} -/** - * 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, checkStyle (style)); -} -/** - * 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); - super.drawBackground (gc, x, y, width, height); -} -/** - * 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 for the receiver, may be 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 Caret getCaret () { - checkWidget(); - return caret; -} -/** - * Returns the IME. - * - * @return the IME - * - * @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 3.4 - */ -public IME getIME () { - checkWidget (); - return ime; -} -Caret getIMCaret () { - return caret; -} -void redrawWidget (int x, int y, int width, int height, boolean redrawAll, boolean allChildren, boolean trim) { - boolean isFocus = caret != null && caret.isFocusCaret (); - if (isFocus) caret.killFocus (); - super.redrawWidget (x, y, width, height, redrawAll, allChildren, trim); - if (isFocus) caret.setFocus (); -} - -void releaseChildren (boolean destroy) { - if (caret != null) { - caret.release (false); - caret = null; - } - if (ime != null) { - ime.release (false); - ime = null; - } - super.releaseChildren (destroy); -} - -/** - * 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(); - if (width <= 0 || height <= 0) return; - int deltaX = destX - x, deltaY = destY - y; - if (deltaX == 0 && deltaY == 0) return; - if (!isVisible ()) return; - boolean isFocus = caret != null && caret.isFocusCaret (); - if (isFocus) caret.killFocus (); - int xDisplay = OS.XtDisplay (handle); - if (xDisplay == 0) return; - int xWindow = OS.XtWindow (handle); - if (xWindow == 0) return; - int [] argList = {OS.XmNwidth, 0, OS.XmNheight, 0}; - OS.XtGetValues (handle, argList, argList.length / 2); - if (Math.min(x + width, argList [1]) >= Math.max (x, 0) && Math.min(y + height, 0 + argList [3]) >= Math.max (y, 0)) { - int xEvent = OS.XtMalloc (XEvent.sizeof); - OS.XSync (xDisplay, false); - OS.XSync (xDisplay, false); - while (OS.XCheckWindowEvent (xDisplay, xWindow, OS.ExposureMask, xEvent)) { - OS.XtDispatchEvent (xEvent); - } - OS.XtFree (xEvent); - } - Control control = findBackgroundControl (); - if (control == null) control = this; - if (control.backgroundImage != null) { - redrawWidget (x, y, width, height, false, false, false); - redrawWidget (destX, destY, width, height, false, false, false); - } else { - int xGC = OS.XCreateGC (xDisplay, xWindow, 0, null); - OS.XCopyArea (xDisplay, xWindow, xWindow, xGC, x, y, width, height, destX, destY); - OS.XFreeGC (xDisplay, xGC); - boolean disjoint = (destX + width < x) || (x + width < destX) || (destY + height < y) || (y + height < destY); - if (disjoint) { - OS.XClearArea (xDisplay, xWindow, x, y, width, height, true); - } else { - if (deltaX != 0) { - int newX = destX - deltaX; - if (deltaX < 0) newX = destX + width; - OS.XClearArea (xDisplay, xWindow, newX, y, Math.abs (deltaX), height, true); - } - if (deltaY != 0) { - int newY = destY - deltaY; - if (deltaY < 0) newY = destY + height; - OS.XClearArea (xDisplay, xWindow, x, newY, width, Math.abs (deltaY), true); - } - } - } - 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 (); - } - } -} -boolean setBounds (int x, int y, int width, int height, boolean move, boolean resize) { - boolean isFocus = caret != null && caret.isFocusCaret (); - if (isFocus) caret.killFocus (); - boolean changed = super.setBounds (x, y, width, height, move, resize); - if (isFocus) caret.setFocus (); - return changed; -} -public void setFont (Font font) { - checkWidget(); - if (caret != null) caret.setFont (font); - super.setFont (font); -} -/** - * Sets the receiver's IME. - * - * @param ime the new IME for the receiver, may be null - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the IME 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 3.4 - */ -public void setIME (IME ime) { - checkWidget (); - if (ime != null && ime.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT); - this.ime = ime; -} -int XExposure (int w, int client_data, int call_data, int continue_to_dispatch) { - boolean isFocus = caret != null && caret.isFocusCaret (); - if (isFocus) caret.killFocus (); - int result = super.XExposure (w, client_data, call_data, continue_to_dispatch); - if (isFocus) caret.setFocus (); - return result; -} -int xFocusIn (XFocusChangeEvent xEvent) { - int result = super.xFocusIn (xEvent); - if (caret != null) caret.setFocus (); - return result; -} -int xFocusOut (XFocusChangeEvent xEvent) { - int result = super.xFocusOut (xEvent); - if (caret != null) caret.killFocus (); - return result; -} -} |