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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/gtk1x/org/eclipse/swt/widgets/Canvas.java')
-rw-r--r--bundles/org.eclipse.swt/Eclipse SWT/gtk1x/org/eclipse/swt/widgets/Canvas.java266
1 files changed, 0 insertions, 266 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk1x/org/eclipse/swt/widgets/Canvas.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk1x/org/eclipse/swt/widgets/Canvas.java
deleted file mode 100644
index dbfbbf9cb7..0000000000
--- a/bundles/org.eclipse.swt/Eclipse SWT/gtk1x/org/eclipse/swt/widgets/Canvas.java
+++ /dev/null
@@ -1,266 +0,0 @@
-package org.eclipse.swt.widgets;
-
-/*
- * Copyright (c) 2000, 2002 IBM Corp. All rights reserved.
- * This file is made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- */
-
-import org.eclipse.swt.internal.gtk.*;
-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;
-
-/*
- * === CONSTRUCTORS ===
- */
-
-
-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
- * for all SWT widget classes should include a comment which
- * describes the style constants which are applicable to the class.
- * </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>
- * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
- * </ul>
- *
- * @see SWT
- * @see Widget#checkSubclass
- * @see Widget#getStyle
- */
-public Canvas (Composite parent, int style) {
- super (parent, style);
-}
-
-/**
- * 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;
-}
-
-/**
- * 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) {
- if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
- if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
-
- if (width <= 0 || height <= 0) return;
- int deltaX = destX - x, deltaY = destY - y;
- if (deltaX == 0 && deltaY == 0) return;
- if (!isVisible ()) return;
-
- /* Hide the caret */
- boolean isVisible = (caret != null) && (caret.isVisible ());
- if (isVisible) caret.hideCaret ();
-
- GtkWidget widget = new GtkWidget();
- OS.memmove (widget, paintHandle(), GtkWidget.sizeof);
- int window = widget.window;
- if (window == 0) return;
-
- /* Emit a NoExpose Event */
- int gc = OS.gdk_gc_new (window);
- OS.gdk_gc_set_exposures(gc, true);
- OS.gdk_window_copy_area (window, gc, x, y, window, x, y, width, height);
- OS.gdk_gc_destroy (gc);
-
- /* Flush outstanding Exposes */
- int eventHandle=0;
- while ((eventHandle = OS.gdk_event_get_graphics_expose(window)) != 0) {
- OS.gtk_widget_event(handle, eventHandle);
- OS.gdk_event_free(eventHandle);
- }
-
- /* Scroll the window */
- int gc1 = OS.gdk_gc_new (window);
- OS.gdk_gc_set_exposures(gc1, true);
- OS.gdk_window_copy_area (window, gc1, destX, destY, window, x, y, width, height);
- OS.gdk_gc_destroy (gc1);
- boolean disjoint = (destX + width < x) || (x + width < destX) || (destY + height < y) || (y + height < destY);
- if (disjoint) {
- OS.gdk_window_clear_area(window, x, y, width, height);
- } else {
- if (deltaX != 0) {
- int newX = destX - deltaX;
- if (deltaX < 0) newX = destX + width;
- OS.gdk_window_clear_area_e(window, newX, y, Math.abs (deltaX), height);
- }
- if (deltaY != 0) {
- int newY = destY - deltaY;
- if (deltaY < 0) newY = destY + height;
- OS.gdk_window_clear_area_e (window, x, newY, width, Math.abs (deltaY));
- }
- }
-
- /* Show the caret */
- if (isVisible) caret.showCaret ();
-}
-/**
- * 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) {
- if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
- if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
- Caret newCaret = caret;
- Caret oldCaret = this.caret;
- this.caret = newCaret;
- if (isFocusControl()) {
- if (oldCaret != null) oldCaret.killFocus ();
- if (newCaret != null) newCaret.setFocus ();
- }
-}
-public boolean setFocus () {
- if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
- if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
- if ((style & SWT.NO_FOCUS) != 0) return false;
- return super.setFocus ();
-}
-int processFocusIn (int int0, int int1, int int2) {
- int result = super.processFocusIn (int0, int1, int2);
- if (caret != null) caret.setFocus ();
- return result;
-}
-int processFocusOut(int int0, int int1, int int2) {
- int result = super.processFocusOut (int0, int1, int2);
- if (caret != null) caret.killFocus ();
- return result;
-}
-/*
-int processMouseDown (int callData, int arg1, int int2) {
- if ((UtilFuncs.GTK_WIDGET_GET_FLAGS(handle) & OS.GTK_HAS_FOCUS) == 0)
- OS.gtk_widget_grab_focus(handle);
- GdkEventButton gdkEvent = new GdkEventButton ();
- OS.memmove (gdkEvent, callData, GdkEventButton.sizeof);
- int eventType = SWT.MouseDown;
- if (gdkEvent.type == OS.GDK_2BUTTON_PRESS) eventType = SWT.MouseDoubleClick;
- sendMouseEvent (eventType, gdkEvent.button, gdkEvent.state, gdkEvent.time, (int)gdkEvent.x, (int)gdkEvent.y);
- if (gdkEvent.button == 3 && menu != null) {
- menu.setVisible (true);
- }
- return 1;
-}
-
-int processMouseUp (int callData, int arg1, int int2) {
- GdkEventButton gdkEvent = new GdkEventButton ();
- OS.memmove (gdkEvent, callData, GdkEventButton.sizeof);
- sendMouseEvent (SWT.MouseUp, gdkEvent.button, gdkEvent.state, gdkEvent.time, (int)gdkEvent.x, (int)gdkEvent.y);
- return 1;
-}
-*/
-int processPaint (int callData, int arg1, int int2) {
- //if (!hooks (SWT.Paint)) return 0;
-
- GdkEventExpose gdkEvent = new GdkEventExpose ();
- OS.memmove (gdkEvent, callData, GdkEventExpose.sizeof);
- Event event = new Event ();
- event.count = gdkEvent.count;
- event.x = gdkEvent.x; event.y = gdkEvent.y;
- event.width = gdkEvent.width; event.height = gdkEvent.height;
- GC gc = event.gc = new GC (this);
- sendEvent (SWT.Paint, event);
- gc.dispose ();
- event.gc = null;
- return 0;
-}
-void releaseWidget () {
- if (caret != null) caret.releaseWidget ();
- caret = null;
- super.releaseWidget ();
-}
-
-}

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