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Diffstat (limited to 'examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/CanvasTab.java')
-rw-r--r--examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/CanvasTab.java310
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diff --git a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/CanvasTab.java b/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/CanvasTab.java
deleted file mode 100644
index 3e3fe44108..0000000000
--- a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/CanvasTab.java
+++ /dev/null
@@ -1,310 +0,0 @@
-/*******************************************************************************
- * 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.examples.controlexample;
-
-
-import org.eclipse.swt.*;
-import org.eclipse.swt.graphics.*;
-import org.eclipse.swt.widgets.*;
-import org.eclipse.swt.events.*;
-import org.eclipse.swt.layout.*;
-
-class CanvasTab extends Tab {
- static final int colors [] = {
- SWT.COLOR_RED,
- SWT.COLOR_GREEN,
- SWT.COLOR_BLUE,
- SWT.COLOR_MAGENTA,
- SWT.COLOR_YELLOW,
- SWT.COLOR_CYAN,
- SWT.COLOR_DARK_RED,
- SWT.COLOR_DARK_GREEN,
- SWT.COLOR_DARK_BLUE,
- SWT.COLOR_DARK_MAGENTA,
- SWT.COLOR_DARK_YELLOW,
- SWT.COLOR_DARK_CYAN
- };
- static final String canvasString = "Canvas"; //$NON-NLS-1$
-
- /* Example widgets and groups that contain them */
- Canvas canvas;
- Group canvasGroup;
-
- /* Style widgets added to the "Style" group */
- Button horizontalButton, verticalButton, noBackgroundButton, noFocusButton,
- noMergePaintsButton, noRedrawResizeButton, doubleBufferedButton;
-
- /* Other widgets added to the "Other" group */
- Button caretButton, fillDamageButton;
-
- int paintCount;
- int cx, cy;
- int maxX, maxY;
-
- /**
- * Creates the Tab within a given instance of ControlExample.
- */
- CanvasTab(ControlExample instance) {
- super(instance);
- }
-
- /**
- * Creates the "Other" group.
- */
- void createOtherGroup () {
- super.createOtherGroup ();
-
- /* Create display controls specific to this example */
- caretButton = new Button (otherGroup, SWT.CHECK);
- caretButton.setText (ControlExample.getResourceString("Caret"));
- fillDamageButton = new Button (otherGroup, SWT.CHECK);
- fillDamageButton.setText (ControlExample.getResourceString("FillDamage"));
-
- /* Add the listeners */
- caretButton.addSelectionListener (new SelectionAdapter () {
- public void widgetSelected (SelectionEvent event) {
- setCaret ();
- }
- });
- }
-
- /**
- * Creates the "Example" group.
- */
- void createExampleGroup () {
- super.createExampleGroup ();
-
- /* Create a group for the canvas widget */
- canvasGroup = new Group (exampleGroup, SWT.NONE);
- canvasGroup.setLayout (new GridLayout ());
- canvasGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
- canvasGroup.setText ("Canvas");
- }
-
- /**
- * Creates the "Example" widgets.
- */
- void createExampleWidgets () {
-
- /* Compute the widget style */
- int style = getDefaultStyle();
- if (horizontalButton.getSelection ()) style |= SWT.H_SCROLL;
- if (verticalButton.getSelection ()) style |= SWT.V_SCROLL;
- if (borderButton.getSelection ()) style |= SWT.BORDER;
- if (noBackgroundButton.getSelection ()) style |= SWT.NO_BACKGROUND;
- if (noFocusButton.getSelection ()) style |= SWT.NO_FOCUS;
- if (noMergePaintsButton.getSelection ()) style |= SWT.NO_MERGE_PAINTS;
- if (noRedrawResizeButton.getSelection ()) style |= SWT.NO_REDRAW_RESIZE;
- if (doubleBufferedButton.getSelection ()) style |= SWT.DOUBLE_BUFFERED;
-
- /* Create the example widgets */
- paintCount = 0; cx = 0; cy = 0;
- canvas = new Canvas (canvasGroup, style);
- canvas.addPaintListener(new PaintListener () {
- public void paintControl(PaintEvent e) {
- paintCount++;
- GC gc = e.gc;
- if (fillDamageButton.getSelection ()) {
- Color color = e.display.getSystemColor (colors [paintCount % colors.length]);
- gc.setBackground(color);
- gc.fillRectangle(e.x, e.y, e.width, e.height);
- }
- Point size = canvas.getSize ();
- gc.drawArc(cx + 1, cy + 1, size.x - 2, size.y - 2, 0, 360);
- gc.drawRectangle(cx + (size.x - 10) / 2, cy + (size.y - 10) / 2, 10, 10);
- Point extent = gc.textExtent(canvasString);
- gc.drawString(canvasString, cx + (size.x - extent.x) / 2, cy - extent.y + (size.y - 10) / 2, true);
- }
- });
- canvas.addControlListener(new ControlAdapter() {
- public void controlResized(ControlEvent event) {
- Point size = canvas.getSize ();
- maxX = size.x * 3 / 2; maxY = size.y * 3 / 2;
- resizeScrollBars ();
- }
- });
- ScrollBar bar = canvas.getHorizontalBar();
- if (bar != null) {
- bar.addSelectionListener(new SelectionAdapter() {
- public void widgetSelected(SelectionEvent event) {
- scrollHorizontal ((ScrollBar)event.widget);
- }
- });
- }
- bar = canvas.getVerticalBar();
- if (bar != null) {
- bar.addSelectionListener(new SelectionAdapter() {
- public void widgetSelected(SelectionEvent event) {
- scrollVertical ((ScrollBar)event.widget);
- }
- });
- }
- }
-
- /**
- * Creates the "Style" group.
- */
- void createStyleGroup() {
- super.createStyleGroup();
-
- /* Create the extra widgets */
- horizontalButton = new Button (styleGroup, SWT.CHECK);
- horizontalButton.setText ("SWT.H_SCROLL");
- horizontalButton.setSelection(true);
- verticalButton = new Button (styleGroup, SWT.CHECK);
- verticalButton.setText ("SWT.V_SCROLL");
- verticalButton.setSelection(true);
- borderButton = new Button (styleGroup, SWT.CHECK);
- borderButton.setText ("SWT.BORDER");
- noBackgroundButton = new Button (styleGroup, SWT.CHECK);
- noBackgroundButton.setText ("SWT.NO_BACKGROUND");
- noFocusButton = new Button (styleGroup, SWT.CHECK);
- noFocusButton.setText ("SWT.NO_FOCUS");
- noMergePaintsButton = new Button (styleGroup, SWT.CHECK);
- noMergePaintsButton.setText ("SWT.NO_MERGE_PAINTS");
- noRedrawResizeButton = new Button (styleGroup, SWT.CHECK);
- noRedrawResizeButton.setText ("SWT.NO_REDRAW_RESIZE");
- doubleBufferedButton = new Button (styleGroup, SWT.CHECK);
- doubleBufferedButton.setText ("SWT.DOUBLE_BUFFERED");
- }
-
- /**
- * Creates the tab folder page.
- *
- * @param tabFolder org.eclipse.swt.widgets.TabFolder
- * @return the new page for the tab folder
- */
- Composite createTabFolderPage (TabFolder tabFolder) {
- super.createTabFolderPage (tabFolder);
-
- /*
- * Add a resize listener to the tabFolderPage so that
- * if the user types into the example widget to change
- * its preferred size, and then resizes the shell, we
- * recalculate the preferred size correctly.
- */
- tabFolderPage.addControlListener(new ControlAdapter() {
- public void controlResized(ControlEvent e) {
- setExampleWidgetSize ();
- }
- });
-
- return tabFolderPage;
- }
-
- /**
- * Gets the "Example" widget children.
- */
- Control [] getExampleWidgets () {
- return new Control [] {canvas};
- }
-
- /**
- * Returns a list of set/get API method names (without the set/get prefix)
- * that can be used to set/get values in the example control(s).
- */
- String[] getMethodNames() {
- return new String[] {"ToolTipText"};
- }
-
- /**
- * Gets the text for the tab folder item.
- */
- String getTabText () {
- return "Canvas";
- }
-
- /**
- * Resizes the maximum and thumb of both scrollbars.
- */
- void resizeScrollBars () {
- Rectangle clientArea = canvas.getClientArea();
- ScrollBar bar = canvas.getHorizontalBar();
- if (bar != null) {
- bar.setMaximum(maxX);
- bar.setThumb(clientArea.width);
- bar.setPageIncrement(clientArea.width);
- }
- bar = canvas.getVerticalBar();
- if (bar != null) {
- bar.setMaximum(maxY);
- bar.setThumb(clientArea.height);
- bar.setPageIncrement(clientArea.height);
- }
- }
-
- /**
- * Scrolls the canvas horizontally.
- *
- * @param scrollBar
- */
- void scrollHorizontal (ScrollBar scrollBar) {
- Rectangle bounds = canvas.getClientArea();
- int x = -scrollBar.getSelection();
- if (x + maxX < bounds.width) {
- x = bounds.width - maxX;
- }
- canvas.scroll(x, cy, cx, cy, maxX, maxY, false);
- cx = x;
- }
-
- /**
- * Scrolls the canvas vertically.
- *
- * @param scrollBar
- */
- void scrollVertical (ScrollBar scrollBar) {
- Rectangle bounds = canvas.getClientArea();
- int y = -scrollBar.getSelection();
- if (y + maxY < bounds.height) {
- y = bounds.height - maxY;
- }
- canvas.scroll(cx, y, cx, cy, maxX, maxY, false);
- cy = y;
- }
-
- /**
- * Sets or clears the caret in the "Example" widget.
- */
- void setCaret () {
- Caret oldCaret = canvas.getCaret ();
- if (caretButton.getSelection ()) {
- Caret newCaret = new Caret(canvas, SWT.NONE);
- Font font = canvas.getFont();
- newCaret.setFont(font);
- GC gc = new GC(canvas);
- gc.setFont(font);
- newCaret.setBounds(1, 1, 1, gc.getFontMetrics().getHeight());
- gc.dispose();
- canvas.setCaret (newCaret);
- canvas.setFocus();
- } else {
- canvas.setCaret (null);
- }
- if (oldCaret != null) oldCaret.dispose ();
- }
-
- /**
- * Sets the state of the "Example" widgets.
- */
- void setExampleWidgetState () {
- super.setExampleWidgetState ();
- horizontalButton.setSelection ((canvas.getStyle () & SWT.H_SCROLL) != 0);
- verticalButton.setSelection ((canvas.getStyle () & SWT.V_SCROLL) != 0);
- borderButton.setSelection ((canvas.getStyle () & SWT.BORDER) != 0);
- noBackgroundButton.setSelection ((canvas.getStyle () & SWT.NO_BACKGROUND) != 0);
- noFocusButton.setSelection ((canvas.getStyle () & SWT.NO_FOCUS) != 0);
- noMergePaintsButton.setSelection ((canvas.getStyle () & SWT.NO_MERGE_PAINTS) != 0);
- noRedrawResizeButton.setSelection ((canvas.getStyle () & SWT.NO_REDRAW_RESIZE) != 0);
- doubleBufferedButton.setSelection ((canvas.getStyle () & SWT.DOUBLE_BUFFERED) != 0);
- if (!instance.startup) setCaret ();
- }
-}

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