expandbar & expanditem - initial release

1 files changed, 351 insertions, 0 deletions

diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ExpandItem.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ExpandItem.java
new file mode 100644
index 0000000000..6c6223e581
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ExpandItem.java
@@ -0,0 +1,351 @@
+/*******************************************************************************
+ * 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.graphics.*;
+import org.eclipse.swt.internal.win32.*;
+import org.eclipse.swt.*;
+
+/**
+ * Instances of this class represent a selectable user interface object
+ * that represents a expandable item in a expand bar.
+ * <p>
+ * <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>
+ * 
+ * @see ExpandBar
+ * 
+ * @since 3.2
+ */
+public class ExpandItem extends Item {
+	ExpandBar parent;
+	Control control;
+	boolean expanded, hover;
+	int x, y, width, height;	
+	static final int TEXT_INSET = 6;
+	static final int BORDER = 1;
+	
+/**
+ * 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>
+ *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
+ * </ul>
+ *
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public ExpandItem (ExpandBar parent, int style) {
+	this (parent, style, checkNull (parent).getItemCount ());
+}
+
+public ExpandItem (ExpandBar parent, int style, int index) {
+	super (parent, style);
+	this.parent = parent;
+	parent.createItem (this, style, index);
+}
+
+static ExpandBar checkNull (ExpandBar control) {
+	if (control == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
+	return control;	
+}
+
+private void drawChevron (int hDC, RECT rect) {
+	rect.left += 4;
+	rect.top += 4;
+	rect.right -= 4;
+	rect.bottom -= 4;		
+	int blackPen = OS.CreatePen (OS.PS_SOLID, 1, 0);
+	int oldPen = OS.SelectObject (hDC, blackPen);
+	int [] polyline1, polyline2;
+	if (expanded) {
+		int px = rect.left + 5;
+		int py = rect.top + 7;
+		polyline1 = new int [] {
+				px,py, px+1,py, px+1,py-1, px+2,py-1, px+2,py-2, px+3,py-2, px+3,py-3,
+				px+3,py-2, px+4,py-2, px+4,py-1, px+5,py-1, px+5,py, px+7,py};
+		py += 4;
+		polyline2 = new int [] {
+				px,py, px+1,py, px+1,py-1, px+2,py-1, px+2,py-2, px+3,py-2, px+3,py-3,
+				px+3,py-2, px+4,py-2, px+4,py-1,  px+5,py-1, px+5,py, px+7,py};
+	} else {
+		int px = rect.left + 5;
+		int py = rect.top + 4;
+		polyline1 = new int[] {
+				px,py, px+1,py, px+1,py+1, px+2,py+1, px+2,py+2, px+3,py+2, px+3,py+3,
+				px+3,py+2, px+4,py+2, px+4,py+1,  px+5,py+1, px+5,py, px+7,py};
+		py += 4;
+		polyline2 = new int [] {
+				px,py, px+1,py, px+1,py+1, px+2,py+1, px+2,py+2, px+3,py+2, px+3,py+3,
+				px+3,py+2, px+4,py+2, px+4,py+1,  px+5,py+1, px+5,py, px+7,py};
+	}
+	OS.Polyline (hDC, polyline1, polyline1.length / 2);
+	OS.Polyline (hDC, polyline2, polyline2.length / 2);
+	if (hover) {
+		int whitePen = OS.CreatePen (OS.PS_SOLID, 1, OS.GetSysColor (OS.COLOR_3DHILIGHT));
+		int darkGrayPen = OS.CreatePen (OS.PS_SOLID, 1, OS.GetSysColor (OS.COLOR_3DSHADOW));
+		OS.SelectObject (hDC, whitePen);
+		OS.MoveToEx (hDC, rect.left, rect.bottom, 0);
+		OS.LineTo (hDC, rect.left, rect.top);
+		OS.LineTo (hDC, rect.right, rect.top);
+		OS.SelectObject (hDC, darkGrayPen);
+		OS.LineTo (hDC, rect.right, rect.bottom);
+		OS.LineTo (hDC, rect.left, rect.bottom);
+		OS.SelectObject (hDC, oldPen);
+		OS.DeleteObject (whitePen);
+		OS.DeleteObject (darkGrayPen);
+	} else {
+		OS.SelectObject (hDC, oldPen);
+	}		
+	OS.DeleteObject (blackPen);
+}
+
+void drawItem (GC gc, int hTheme, RECT clipRect, boolean drawFocus) {
+	int hDC = gc.handle;
+	int headerHeight = ExpandBar.HEADER_HEIGHT;
+	RECT rect = new RECT ();
+	OS.SetRect (rect, x, y, x + width, y + headerHeight);
+	if (hTheme != 0) {
+		OS.DrawThemeBackground (hTheme, hDC, OS.EBP_NORMALGROUPHEAD, 0, rect, clipRect);
+	} else {
+		int oldBrush = OS.SelectObject (hDC, OS.GetSysColorBrush (OS.COLOR_BTNFACE));
+		OS.PatBlt (hDC, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY);
+		OS.SelectObject (hDC, oldBrush);		
+	}
+	if (image != null) {
+		rect.left += ExpandItem.TEXT_INSET;
+		Rectangle bounds = image.getBounds();
+		if (bounds.height > headerHeight) {
+			gc.drawImage (image, 0, 0, bounds.width, bounds.height, rect.left, rect.top, bounds.width, headerHeight);
+		} else {
+			gc.drawImage (image, rect.left, rect.top + (headerHeight - bounds.height) / 2);
+		}
+		rect.left += bounds.width;
+	}
+	if (text.length () > 0) {
+		rect.left += ExpandItem.TEXT_INSET;
+		TCHAR buffer = new TCHAR (parent.getCodePage (), text, false);
+		if (hTheme != 0) {
+			OS.DrawThemeText (hTheme, hDC, OS.EBP_NORMALGROUPHEAD, 0, buffer.chars, buffer.length(), OS.DT_VCENTER | OS.DT_SINGLELINE, 0, rect);
+		} else {
+			NONCLIENTMETRICS info = OS.IsUnicode ? (NONCLIENTMETRICS) new NONCLIENTMETRICSW () : new NONCLIENTMETRICSA ();
+			info.cbSize = NONCLIENTMETRICS.sizeof;
+			int hFont = 0, oldFont = 0;
+			if (OS.SystemParametersInfo (OS.SPI_GETNONCLIENTMETRICS, 0, info, 0)) {
+				LOGFONT logFont = OS.IsUnicode ? (LOGFONT) ((NONCLIENTMETRICSW)info).lfCaptionFont : ((NONCLIENTMETRICSA)info).lfCaptionFont;
+				hFont = OS.CreateFontIndirect (logFont);
+				oldFont = OS.SelectObject (hDC, hFont);
+			}
+			int oldBkMode = OS.SetBkMode (hDC, OS.TRANSPARENT);
+			OS.DrawText (hDC, buffer, buffer.length (), rect, OS.DT_VCENTER | OS.DT_SINGLELINE);
+			OS.SetBkMode (hDC, oldBkMode);
+			if (hFont != 0) {
+				OS.SelectObject (hDC, oldFont);
+				OS.DeleteObject (hFont);
+			}
+		}
+	}
+	rect.left = rect.right - headerHeight;
+	if (hTheme != 0) {
+		int partID = expanded ? OS.EBP_NORMALGROUPCOLLAPSE : OS.EBP_NORMALGROUPEXPAND;
+		int stateID = hover ? OS.EBNGC_HOT : OS.EBNGC_NORMAL;
+		OS.DrawThemeBackground (hTheme, hDC, partID, stateID, rect, clipRect);
+	} else {
+		drawChevron (hDC, rect);
+	} 
+	if (drawFocus) {
+		OS.SetRect (rect, x + 1, y + 1, x + width - 2, y + headerHeight - 2);
+		OS.DrawFocusRect (hDC, rect);
+	}
+	if (expanded) {
+		if (OS.COMCTL32_MAJOR < 6 || !OS.IsAppThemed ()) {
+			int pen = OS.CreatePen (OS.PS_SOLID, 1, OS.GetSysColor (OS.COLOR_BTNFACE));
+			int oldPen = OS.SelectObject (hDC, pen);
+			OS.MoveToEx (hDC, x, y + headerHeight, 0);			
+			OS.LineTo (hDC, x, y + headerHeight + height);
+			OS.LineTo (hDC, x + width - 1, y + headerHeight + height);
+			OS.LineTo (hDC, x + width - 1, y + headerHeight - 1);
+			OS.SelectObject (hDC, oldPen);
+			OS.DeleteObject (pen);
+		}
+	}
+}
+
+void destroyWidget () {
+	parent.destroyItem (this);
+	releaseHandle ();
+}
+
+public Control getControl () {
+	checkWidget ();
+	return control;
+}
+
+public boolean getExpanded () {
+	checkWidget ();
+	return expanded;
+}
+
+public int getHeight () {
+	checkWidget ();
+	return height;
+}
+
+public ExpandBar getParent () {
+	checkWidget ();
+	return parent;
+}
+
+int getPreferredWidth (int hTheme, int hDC) {	
+	int width = ExpandItem.TEXT_INSET * 2 + ExpandBar.HEADER_HEIGHT;
+	if (image != null) {
+		width += ExpandItem.TEXT_INSET;
+		width += image.getBounds ().width;		
+	}
+	if (text.length() > 0) {
+		RECT rect = new RECT ();
+		TCHAR buffer = new TCHAR (parent.getCodePage (), text, false);			
+		if (hTheme != 0) {
+			OS.GetThemeTextExtent (hTheme, hDC, OS.EBP_NORMALGROUPHEAD, 0, buffer.chars, buffer.length(), OS.DT_SINGLELINE, null, rect);			
+		} else {
+			NONCLIENTMETRICS info = OS.IsUnicode ? (NONCLIENTMETRICS) new NONCLIENTMETRICSW () : new NONCLIENTMETRICSA ();
+			info.cbSize = NONCLIENTMETRICS.sizeof;
+			int hFont = 0, oldFont = 0;
+			if (OS.SystemParametersInfo (OS.SPI_GETNONCLIENTMETRICS, 0, info, 0)) {
+				LOGFONT logFont = OS.IsUnicode ? (LOGFONT) ((NONCLIENTMETRICSW)info).lfCaptionFont : ((NONCLIENTMETRICSA)info).lfCaptionFont;
+				hFont = OS.CreateFontIndirect (logFont);
+				oldFont = OS.SelectObject (hDC, hFont);
+			}
+			OS.DrawText (hDC, buffer, buffer.length (), rect, OS.DT_CALCRECT);
+			if (hFont != 0) {
+				OS.SelectObject (hDC, oldFont);
+				OS.DeleteObject (hFont);
+			}
+		}
+		width += (rect.right - rect.left);
+	}
+	return width;
+}
+
+void redraw (boolean all) {
+	int parentHandle = parent.handle;
+	RECT rect = new RECT ();
+	int left = all ? x : x + width - ExpandBar.HEADER_HEIGHT;
+	OS.SetRect (rect, left, y, x + width, y + ExpandBar.HEADER_HEIGHT);
+	OS.InvalidateRect (parentHandle, rect, true);
+	if (OS.COMCTL32_MAJOR < 6 || !OS.IsAppThemed ()) {
+		OS.SetRect (rect, x, y + ExpandBar.HEADER_HEIGHT, x + width, y + ExpandBar.HEADER_HEIGHT + height + 1);
+		OS.InvalidateRect (parentHandle, rect, true);
+	}
+}
+
+void releaseHandle () {
+	super.releaseHandle ();
+	parent = null;
+}
+
+void releaseWidget () {
+	super.releaseWidget ();
+	control = null;
+}
+
+void setBounds (int x, int y, int width, int height, boolean move, boolean size) {	
+	redraw (true);
+	int flags = OS.SWP_NOZORDER | OS.SWP_DRAWFRAME | OS.SWP_NOACTIVATE | OS.SWP_NOSIZE | OS.SWP_NOMOVE;
+	if (move) {
+		this.x = x;
+		this.y = y;
+		flags &= ~OS.SWP_NOMOVE;
+		redraw (true);
+	}
+	if (size) {
+		this.width = width;
+		this.height = height;
+		flags &= ~OS.SWP_NOSIZE;
+		redraw (true);
+	}
+	if (control != null && !control.isDisposed ()) {
+		int hwnd = control.handle;
+		if (OS.COMCTL32_MAJOR < 6 || !OS.IsAppThemed ()) {
+			x += BORDER;
+			width = Math.max (0, width - BORDER * 2);
+			height = Math.max (0, height - BORDER);
+		}
+		OS.SetWindowPos (hwnd, 0, x, y + ExpandBar.HEADER_HEIGHT, width, height, flags);
+	}
+}
+
+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);
+	}
+	this.control = control;
+	if (control != null) {
+		int hwnd = control.handle;
+		OS.ShowWindow (hwnd, expanded ? OS.SW_SHOW : OS.SW_HIDE);
+		int flags = OS.SWP_NOZORDER | OS.SWP_DRAWFRAME | OS.SWP_NOACTIVATE;
+		if (OS.COMCTL32_MAJOR < 6 || !OS.IsAppThemed ()) {
+			x += BORDER;
+			width = Math.max (0, width - BORDER * 2);
+			height = Math.max (0, height - BORDER);
+		}
+		OS.SetWindowPos (hwnd, 0, x, y + ExpandBar.HEADER_HEIGHT, width, height, flags);
+	}
+}
+
+public void setExpanded (boolean expanded) {
+	checkWidget ();
+	this.expanded = expanded;
+	parent.showItem (parent.indexOf (this));
+}
+
+public void setHeight (int height) {
+	checkWidget ();
+	setBounds (0, 0, width, height, false, true);
+	if (expanded) parent.layoutItems (parent.indexOf (this) + 1, true);
+}
+
+public void setImage(Image image) {
+	super.setImage(image);
+	redraw (true);
+}
+
+public void setText (String string) {
+	super.setText (string);
+	redraw (true);
+}
+}