Mercurial > projects > dwt-samples
view snippets/styledtext/Snippet217.d @ 155:04d05db6dca4
styledtext: Snippet211, Snippet213, Snippet217, Snippet218, Snippet222, Snippet244
author | yidabu <yidabu@gmail.com> |
---|---|
date | Fri, 22 Aug 2008 07:27:56 +0800 |
parents | |
children | 8d6ec2b0357c |
line wrap: on
line source
/******************************************************************************* * Copyright (c) 2000, 2004 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 * Port to the D programming language: * yidabu at gmail dot com ( D China http://www.d-programming-language-china.org/ ) *******************************************************************************/ module styledtext.Snippet217; /** * StyledText snippet: embed controls * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ * * @since 3.2 */ import dwt.DWT; import dwt.custom.StyledText; import dwt.custom.StyleRange; import dwt.custom.PaintObjectEvent; import dwt.custom.PaintObjectListener; import dwt.layout.GridData; import dwt.layout.GridLayout; import dwt.widgets.Display; import dwt.widgets.Shell; import dwt.widgets.Control; import dwt.widgets.Button; import dwt.widgets.Combo; import dwt.widgets.Event; import dwt.widgets.Listener; import dwt.graphics.FontData; import dwt.graphics.Font; import dwt.graphics.Rectangle; import dwt.graphics.Point; import dwt.graphics.GC; import dwt.graphics.Image; import dwt.graphics.GlyphMetrics; import dwt.dwthelper.utils; version(JIVE){ import jive.stacktrace; } void main() { static StyledText styledText; static String text = "This snippet shows how to embed widgets in a StyledText.\n" "Here is one: \uFFFC, and here is another: \uFFFC."; static int[] offsets; static Control[] controls; static int MARGIN = 5; void addControl(Control control, int offset) { StyleRange style = new StyleRange (); style.start = offset; style.length = 1; control.pack(); Rectangle rect = control.getBounds(); int ascent = 2*rect.height/3; int descent = rect.height - ascent; style.metrics = new GlyphMetrics(ascent + MARGIN, descent + MARGIN, rect.width + 2*MARGIN); styledText.setStyleRange(style); } Display display = new Display(); Font font = new Font(display, "Tahoma", 32f, DWT.NORMAL); Shell shell = new Shell(display); shell.setLayout(new GridLayout()); styledText = new StyledText(shell, DWT.WRAP | DWT.BORDER); styledText.setFont(font); styledText.setLayoutData(new GridData(DWT.FILL, DWT.FILL, true, true)); styledText.setText(text); controls = new Control[2]; Button button = new Button(styledText, DWT.PUSH); button.setText("Button 1"); controls[0] = button; Combo combo = new Combo(styledText, DWT.NONE); combo.add("item 1"); combo.add("another item"); controls[1] = combo; offsets = new int[controls.length]; int lastOffset = 0; for (int i = 0; i < controls.length; i++) { int offset = text.indexOf("\uFFFC", lastOffset); offsets[i] = offset; addControl(controls[i], offsets[i]); lastOffset = offset + 1; } void onVerify(Event e) { int start = e.start; int replaceCharCount = e.end - e.start; int newCharCount = e.text.length; for (int i = 0; i < offsets.length; i++) { int offset = offsets[i]; if (start <= offset && offset < start + replaceCharCount) { // this widget is being deleted from the text if (controls[i] !is null && !controls[i].isDisposed()) { controls[i].dispose(); controls[i] = null; } offset = -1; } if (offset != -1 && offset >= start) offset += newCharCount - replaceCharCount; offsets[i] = offset; } } // use a verify listener to keep the offsets up to date styledText.addListener(DWT.Verify, dgListener(&onVerify)); // reposition widgets on paint event styledText.addPaintObjectListener(new class(offsets) PaintObjectListener { int[] offsets; this(int[] offsets_) { this.offsets = offsets_; } public void paintObject(PaintObjectEvent event) { StyleRange style = event.style; int start = style.start; for (int i = 0; i < offsets.length; i++) { int offset = offsets[i]; if (start == offset) { Point pt = controls[i].getSize(); int x = event.x + MARGIN; int y = event.y + event.ascent - 2*pt.y/3; controls[i].setLocation(x, y); break; } } } }); shell.setSize(400, 400); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } font.dispose(); display.dispose(); }