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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/emulated/tabfolder/org/eclipse/swt/widgets/TabItem.java')
| -rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT/emulated/tabfolder/org/eclipse/swt/widgets/TabItem.java | 422 |
1 files changed, 0 insertions, 422 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/emulated/tabfolder/org/eclipse/swt/widgets/TabItem.java b/bundles/org.eclipse.swt/Eclipse SWT/emulated/tabfolder/org/eclipse/swt/widgets/TabItem.java deleted file mode 100644 index 19c8d87c02..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/emulated/tabfolder/org/eclipse/swt/widgets/TabItem.java +++ /dev/null @@ -1,422 +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.*; -import org.eclipse.swt.graphics.*; - -/** - * Instances of this class represent a selectable user interface object - * corresponding to a tab for a page in a tab folder. - * <dl> - * <dt><b>Styles:</b></dt> - * <dd>(none)</dd> - * <dt><b>Events:</b></dt> - * <dd>(none)</dd> - * </dl> - * <p> - * IMPORTANT: This class is <em>not</em> intended to be subclassed. - * </p> - */ -public class TabItem extends Item { - TabFolder parent; - int x,y,width,height = 0; - String toolTipText; - Control control; // the tab page - - // internal constants - static final int LEFT_HORIZONTAL_MARGIN = 8; - static final int RIGHT_HORIZONTAL_MARGIN = 2; - static final int VERTICAL_MARGIN = 1; // space between tab shadow and tab content - static final int ICON_MARGIN = 6; - static final int SHADOW_WIDTH = 2; // width of the tab shadow - static final int DEFAULT_TEXT_WIDTH = 36; // preferred text width if there is no text. -/** - * Constructs a new instance of this class given its parent - * (which must be a <code>TabFolder</code>) and a style value - * describing its behavior and appearance. The item is added - * to the end of the items maintained by its parent. - * <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> - * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> - * </ul> - * - * @see SWT - * @see Widget#checkSubclass - * @see Widget#getStyle - */ -public TabItem (TabFolder parent, int style) { - super (parent, style); - parent.createChild (this, parent.getItemCount()); -} - -/** - * Constructs a new instance of this class given its parent - * (which must be a <code>TabFolder</code>), a style value - * describing its behavior and appearance, and the index - * at which to place it in the items maintained by its parent. - * <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 - * @param index the zero-relative index to store the receiver in its parent - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> - * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</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 TabItem (TabFolder parent, int style, int index) { - super (parent, style); - parent.createChild (this, index); -} - -protected void checkSubclass () { - if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); -} - -public void dispose() { - if (isDisposed()) return; - super.dispose(); - parent.destroyChild(this); - parent = null; - control = null; - toolTipText = null; -} -/** - * Expand the receiver's bounds by the specified number of pixels on - * the left,top,right,and bottom. - */ -void expand(int left, int top, int right, int bottom) { - if (hasLocation()) { - x = x - left; - y = y - top; - width = width + left + right; - height = height + top + bottom; - } -} -/** - * Return the bounds of the TabItem. - */ -Rectangle getBounds () { - return new Rectangle(x, y, width, height); -} -/** - * Returns the control that is used to fill the client area of - * the tab folder when the user selects the tab item. If no - * control has been set, return <code>null</code>. - * <p> - * @return the control - * - * @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 getControl () { - checkWidget(); - return control; -} -/** - * Returns the receiver's parent, which must be a <code>TabFolder</code>. - * - * @return the receiver's parent - * - * @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 TabFolder getParent () { - checkWidget(); - return parent; -} -/** - * Returns the receiver's tool tip text, or null if it has - * not been set. - * - * @return the receiver's tool tip text - * - * @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 String getToolTipText () { - checkWidget(); - return toolTipText; -} -/** - * Answer true if the receiver has been laid out. - */ -boolean hasLocation() { - return !(width == 0 && height == 0 && x == 0 && y == 0); -} -/** - * Answer the image height. - */ -private int imageHeight() { - Image image = getImage(); - - if (parent.getImageHeight() != -1) { - return parent.getImageHeight(); - } else if (image != null && !image.isDisposed()) { - return image.getBounds().height; - } - else { - return 0; - } -} -/** - * Answer the icon width. - */ -private int imageWidth() { - Image image = getImage(); - - if (image != null && !image.isDisposed()) { - return image.getBounds().width; - } else { - return 0; - } -} -/** - * Paint the receiver. - */ -void paint(GC gc, boolean isSelected) { - // high light colored line across left and top - gc.setForeground(display.getSystemColor(SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW)); - gc.drawLine(x, y + height - 2, x, y + 2); - gc.drawLine(x, y + 2, x + 2, y); - gc.drawLine(x + 2, y, x + width - 3, y); - - // light color next to the left and below the top line. - // Since tabs expand horizontally when selected, we actually draw - // the background color to erase any debris from a selected tab. - gc.setForeground(display.getSystemColor(SWT.COLOR_WIDGET_LIGHT_SHADOW)); - gc.drawLine(x + 1, y + height - 2, x + 1, y + 2); - gc.drawLine(x + 2, y + 1, x + width - 3, y + 1); - - // dark colored line at right - gc.setForeground(display.getSystemColor(SWT.COLOR_WIDGET_FOREGROUND)); - gc.drawLine(x + width - 1, y + 2, x + width - 1, y + height - 1); - // dark pixel on top of shadowed line, inside dark line - gc.drawLine(x + width - 2, y + 1, x + width - 2, y + 1); - - // shadowed line on right inside the dark line - gc.setForeground(display.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW)); - gc.drawLine(x + width - 2, y + 2, x + width - 2, y + height - 1); - - if (parent.isFocusControl() && isSelected) { - // draw a focus rectangle - gc.drawFocus(x + 3, y + 3, width - 6, height - 3); - } - - // icon and bitmap. Should probably be checking style bits to determine - // exactly what to paint. Do we just draw the icon when the icon/text combination - // is too wide to fit all tabs? - gc.setForeground(parent.getForeground()); - int xDraw = x + LEFT_HORIZONTAL_MARGIN; - int yCenter; - int decorationHeight = SHADOW_WIDTH * 2 + VERTICAL_MARGIN * 2; - Image image = getImage(); - Rectangle sourceBounds = null; - if (image != null) { - sourceBounds = image.getBounds(); - yCenter = y + SHADOW_WIDTH + VERTICAL_MARGIN + (height - decorationHeight - imageHeight()) / 2; - gc.drawImage( - image, - sourceBounds.x, sourceBounds.y, sourceBounds.width, sourceBounds.height, - xDraw, yCenter, sourceBounds.width, parent.getImageHeight()); - } - xDraw = xDraw + ICON_MARGIN; - if (sourceBounds != null) { - xDraw += sourceBounds.width; - } - yCenter = y + SHADOW_WIDTH + VERTICAL_MARGIN + (height - decorationHeight - textHeight(gc)) / 2; - int flags = SWT.DRAW_MNEMONIC | SWT.DRAW_TRANSPARENT; - gc.drawText(getText(), xDraw, yCenter, flags); -} -/** - * Answer the preferred height of the receiver for the GC. - */ -int preferredHeight(GC gc) { - int height = textHeight(gc); - if (imageHeight() > height) height = imageHeight(); - height += VERTICAL_MARGIN * 2 + SHADOW_WIDTH * 2; - return height; -} -/** - * Answer the preferred width of the receiver for the GC. - */ -int preferredWidth(GC gc) { - return imageWidth() + textWidth(gc) + LEFT_HORIZONTAL_MARGIN + - RIGHT_HORIZONTAL_MARGIN + ICON_MARGIN + SHADOW_WIDTH * 2; -} -/** - * Sets the control that is used to fill the client area of - * the tab folder when the user selects the tab item. - * <p> - * @param control the new control (or null) - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li> - * <li>ERROR_INVALID_PARENT - if the control 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 setControl (Control control) { - checkWidget(); - if (control != null) { - if (control.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT); - if (control.parent != parent) error (SWT.ERROR_INVALID_PARENT); - } - if (this.control != null && this.control.isDisposed ()) { - this.control = null; - } - Control oldControl = this.control, newControl = control; - this.control = control; - int index = parent.indexOf (this); - if (index != parent.getSelectionIndex ()) { - if (newControl != null) newControl.setVisible(false); - return; - } - if (newControl != null) { - newControl.setBounds (parent.getClientArea ()); - newControl.setVisible (true); - } - if (oldControl != null) oldControl.setVisible (false); -} -public void setImage (Image image) { - checkWidget(); - Image oldImage = this.image; - - super.setImage(image); - if (image == null || !image.equals(oldImage)) { - parent.itemChanged(this); - } -} -/** - * Sets the receiver's text. The string may include - * the mnemonic character. - * </p> - * <p> - * Mnemonics are indicated by an '&' that causes the next - * character to be the mnemonic. When the user presses a - * key sequence that matches the mnemonic, a selection - * event occurs. On most platforms, the mnemonic appears - * underlined but may be emphasised in a platform specific - * manner. The mnemonic indicator character '&' can be - * escaped by doubling it in the string, causing a single - * '&' to be displayed. - * </p> - * - * @param string the new text - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the text is null</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 setText (String string) { - checkWidget(); - String oldText = text; - - if (string == null) error (SWT.ERROR_NULL_ARGUMENT); - super.setText(string); - if (!string.equals(oldText)) { - parent.itemChanged(this); - } -} -/** - * Sets the receiver's tool tip text to the argument, which - * may be null indicating that no tool tip text should be shown. - * - * @param string the new tool tip text (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 setToolTipText (String string) { - checkWidget(); - toolTipText = string; -} -/** - * Answer the text height. - */ -private int textHeight(GC gc) { - String text = getText(); - - if (text == null) { - return 0; - } else { - int flags = SWT.DRAW_MNEMONIC; - return gc.textExtent(text, flags).y; - } -} -/** - * Answer the text width. - */ -private int textWidth(GC gc) { - String text = getText(); - int textWidth = 0; - - if (text != null) { - int flags = SWT.DRAW_MNEMONIC; - textWidth = gc.textExtent(text, flags).x; - } - if (textWidth == 0) { - textWidth = DEFAULT_TEXT_WIDTH; - } - return textWidth; -} -} |