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Bugzilla – Attachment 266797 Details for
Bug 500013
[Wayland] Keyboard Left and Right Arrow keys are very slow or unresponsive
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Modified snippet222 to display time mesaurements old vs new
snippet222.java (text/x-java), 3.59 KB, created by
Ian Pun
on 2017-02-13 14:28:49 EST
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Description:
Modified snippet222 to display time mesaurements old vs new
Filename:
MIME Type:
Creator:
Ian Pun
Created:
2017-02-13 14:28:49 EST
Size:
3.59 KB
patch
obsolete
>/******************************************************************************* > * Copyright (c) 2000, 2016 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.snippets; >/* > * example snippet: StyledText bulleted list example > * > * For a list of all SWT example snippets see > * http://www.eclipse.org/swt/snippets/ > * > * @since 3.2 > */ > >import org.eclipse.swt.*; >import org.eclipse.swt.custom.*; >import org.eclipse.swt.graphics.*; >import org.eclipse.swt.layout.*; >import org.eclipse.swt.widgets.*; > >public class Snippet222 { > >public static void main(String[] args) { > Display display = new Display(); > Shell shell = new Shell(display); > shell.setText("StyledText Bullet Example"); > shell.setLayout(new FillLayout()); > final StyledText styledText = new StyledText (shell, SWT.FULL_SELECTION | SWT.BORDER | SWT.WRAP | SWT.V_SCROLL); > StringBuffer text = new StringBuffer(); > text.append("Here is StyledText with some bulleted lists:\n\n"); > for (int i = 0; i < 2000; i++) text.append("Red Bullet List Item " + i + "\n"); > text.append("\n"); > for (int i = 0; i < 2000; i++) text.append("Numbered List Item " + i + "\n"); > for (int i = 0; i < 2000; i++) text.append("Sub List Item " + i + "\n"); > for (int i = 0; i < 2000; i++) text.append("Numbered List Item " + (2 + i) + "\n"); > text.append("\n"); > for (int i = 0; i < 2000; i++) text.append("Custom Draw List Item " + i + "\n"); > styledText.setText(text.toString()); > > StyleRange style0 = new StyleRange(); > style0.metrics = new GlyphMetrics(0, 0, 40); > style0.foreground = display.getSystemColor(SWT.COLOR_RED); > Bullet bullet0 = new Bullet (style0); > StyleRange style1 = new StyleRange(); > style1.metrics = new GlyphMetrics(0, 0, 50); > style1.foreground = display.getSystemColor(SWT.COLOR_BLUE); > Bullet bullet1 = new Bullet (ST.BULLET_NUMBER | ST.BULLET_TEXT, style1); > bullet1.text = "."; > StyleRange style2 = new StyleRange(); > style2.metrics = new GlyphMetrics(0, 0, 80); > style2.foreground = display.getSystemColor(SWT.COLOR_GREEN); > Bullet bullet2 = new Bullet (ST.BULLET_TEXT, style2); > bullet2.text = "\u2713"; > StyleRange style3 = new StyleRange(); > style3.metrics = new GlyphMetrics(0, 0, 50); > Bullet bullet3 = new Bullet (ST.BULLET_CUSTOM, style2); > > styledText.setLineBullet(2, 4, bullet0); > styledText.setLineBullet(7, 2, bullet1); > styledText.setLineBullet(9, 4, bullet2); > styledText.setLineBullet(13, 2, bullet1); > styledText.setLineBullet(16, 4, bullet3); > > styledText.addPaintObjectListener(event -> { > Display display1 = event.display; > StyleRange style = event.style; > Font font = style.font; > if (font == null) font = styledText.getFont(); > TextLayout layout = new TextLayout(display1); > layout.setAscent(event.ascent); > layout.setDescent(event.descent); > layout.setFont(font); > layout.setText("\u2023 1." + event.bulletIndex + ")"); > layout.draw(event.gc, event.x + 10, event.y); > layout.dispose(); > }); > shell.open(); > > long startTime = System.currentTimeMillis(); > for (int i =0; i<10000;i++) { > styledText.setCaretOffset(i); > } > long finishTime = System.currentTimeMillis(); > System.out.println("time it took to finish = "+(finishTime-startTime)+" milliseconds."); > > while (!shell.isDisposed()) { > if (!display.readAndDispatch()) display.sleep(); > } > display.dispose (); >} >}
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bug 500013
: 266797