X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.eclipse.swt.win32.win32.x86_64%2Fsrc%2Forg%2Feclipse%2Fswt%2Flayout%2FFillLayout.java;fp=bundles%2Forg.eclipse.swt.win32.win32.x86_64%2Fsrc%2Forg%2Feclipse%2Fswt%2Flayout%2FFillLayout.java;h=f66f280bc8b2dbb5059de5c07a24b9f50d1802e7;hb=db618b088560ad9a524dade82a3847f8d08bfb7c;hp=0000000000000000000000000000000000000000;hpb=930da66f9b2d7d1acba3e5dc805a323933abb780;p=simantics%2Fplatform.git diff --git a/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/layout/FillLayout.java b/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/layout/FillLayout.java new file mode 100644 index 000000000..f66f280bc --- /dev/null +++ b/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/layout/FillLayout.java @@ -0,0 +1,245 @@ +/******************************************************************************* + * Copyright (c) 2000, 2018 IBM Corporation and others. + * + * This program and the accompanying materials + * are made available under the terms of the Eclipse Public License 2.0 + * which accompanies this distribution, and is available at + * https://www.eclipse.org/legal/epl-2.0/ + * + * SPDX-License-Identifier: EPL-2.0 + * + * Contributors: + * IBM Corporation - initial API and implementation + *******************************************************************************/ +package org.eclipse.swt.layout; + +import org.eclipse.swt.*; +import org.eclipse.swt.graphics.*; +import org.eclipse.swt.widgets.*; + +/** + * FillLayout is the simplest layout class. It lays out + * controls in a single row or column, forcing them to be the same size. + *

+ * Initially, the controls will all be as tall as the tallest control, + * and as wide as the widest. FillLayout does not wrap, + * but you can specify margins and spacing. You might use it to + * lay out buttons in a task bar or tool bar, or to stack checkboxes + * in a Group. FillLayout can also be used + * when a Composite only has one child. For example, + * if a Shell has a single Group child, + * FillLayout will cause the Group to + * completely fill the Shell (if margins are 0). + *

+ *

+ * Example code: first a FillLayout is created and + * its type field is set, and then the layout is set into the + * Composite. Note that in a FillLayout, + * children are always the same size, and they fill all available space. + *

+ *
+ * 		FillLayout fillLayout = new FillLayout();
+ * 		fillLayout.type = SWT.VERTICAL;
+ * 		shell.setLayout(fillLayout);
+ * 
+ * + * @see SWT Example: LayoutExample + * @see Sample code and further information + */ +public final class FillLayout extends Layout { + /** + * type specifies how controls will be positioned + * within the layout. + * + * The default value is HORIZONTAL. + * + * Possible values are: + */ + public int type = SWT.HORIZONTAL; + + /** + * marginWidth specifies the number of points of horizontal margin + * that will be placed along the left and right edges of the layout. + * + * The default value is 0. + * + * @since 3.0 + */ + public int marginWidth = 0; + + /** + * marginHeight specifies the number of points of vertical margin + * that will be placed along the top and bottom edges of the layout. + * + * The default value is 0. + * + * @since 3.0 + */ + public int marginHeight = 0; + + /** + * spacing specifies the number of points between the edge of one cell + * and the edge of its neighbouring cell. + * + * The default value is 0. + * + * @since 3.0 + */ + public int spacing = 0; + +/** + * Constructs a new instance of this class. + */ +public FillLayout () { +} + +/** + * Constructs a new instance of this class given the type. + * + * @param type the type of fill layout + * + * @since 2.0 + */ +public FillLayout (int type) { + this.type = type; +} + +@Override +protected Point computeSize (Composite composite, int wHint, int hHint, boolean flushCache) { + Control [] children = composite.getChildren (); + int count = children.length; + int maxWidth = 0, maxHeight = 0; + for (int i=0; i 0) { + if (type == SWT.HORIZONTAL && wHint != SWT.DEFAULT) { + w = Math.max (0, (wHint - (count - 1) * spacing) / count); + } + if (type == SWT.VERTICAL && hHint != SWT.DEFAULT) { + h = Math.max (0, (hHint - (count - 1) * spacing) / count); + } + } + Point size = computeChildSize (child, w, h, flushCache); + maxWidth = Math.max (maxWidth, size.x); + maxHeight = Math.max (maxHeight, size.y); + } + int width = 0, height = 0; + if (type == SWT.HORIZONTAL) { + width = count * maxWidth; + if (count != 0) width += (count - 1) * spacing; + height = maxHeight; + } else { + width = maxWidth; + height = count * maxHeight; + if (count != 0) height += (count - 1) * spacing; + } + width += marginWidth * 2; + height += marginHeight * 2; + if (wHint != SWT.DEFAULT) width = wHint; + if (hHint != SWT.DEFAULT) height = hHint; + return new Point (width, height); +} + +Point computeChildSize (Control control, int wHint, int hHint, boolean flushCache) { + FillData data = (FillData)control.getLayoutData (); + if (data == null) { + data = new FillData (); + control.setLayoutData (data); + } + Point size = null; + if (wHint == SWT.DEFAULT && hHint == SWT.DEFAULT) { + size = data.computeSize (control, wHint, hHint, flushCache); + } else { + // TEMPORARY CODE + int trimX, trimY; + if (control instanceof Scrollable) { + Rectangle rect = ((Scrollable) control).computeTrim (0, 0, 0, 0); + trimX = rect.width; + trimY = rect.height; + } else { + trimX = trimY = control.getBorderWidth () * 2; + } + int w = wHint == SWT.DEFAULT ? wHint : Math.max (0, wHint - trimX); + int h = hHint == SWT.DEFAULT ? hHint : Math.max (0, hHint - trimY); + size = data.computeSize (control, w, h, flushCache); + } + return size; +} + +@Override +protected boolean flushCache (Control control) { + Object data = control.getLayoutData(); + if (data != null) ((FillData)data).flushCache(); + return true; +} + +String getName () { + String string = getClass ().getName (); + int index = string.lastIndexOf ('.'); + if (index == -1) return string; + return string.substring (index + 1, string.length ()); +} + +@Override +protected void layout (Composite composite, boolean flushCache) { + Rectangle rect = composite.getClientArea (); + Control [] children = composite.getChildren (); + int count = children.length; + if (count == 0) return; + int width = rect.width - marginWidth * 2; + int height = rect.height - marginHeight * 2; + if (type == SWT.HORIZONTAL) { + width -= (count - 1) * spacing; + int x = rect.x + marginWidth, extra = width % count; + int y = rect.y + marginHeight, cellWidth = width / count; + for (int i=0; i