Attachment 259133 Details for Bug 97506 – SnippetScaling.java

SnippetScaling.java

SnippetScaling.java (text/plain), 8.31 KB, created by Markus Keller

on 2016-01-12 11:32:01 EST

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Creator: Markus Keller

Created: 2016-01-12 11:32:01 EST

Size: 8.31 KB

patch

obsolete

>/*******************************************************************************
> * Copyright (c) 2000, 2016 IBM Corporation and others.
> * All rights reserved. This Example Content is intended to demonstrate
> * usage of Eclipse technology. It is provided to you under the terms and
> * conditions of the Eclipse Distribution License v1.0 which is available
> * at http://www.eclipse.org/org/documents/edl-v10.php
> *
> * Contributors:
> *     IBM Corporation - initial API and implementation
> *******************************************************************************/
>package org.eclipse.swt.snippets;
>
>import org.eclipse.swt.*;
>import org.eclipse.swt.graphics.*;
>import org.eclipse.swt.layout.*;
>import org.eclipse.swt.widgets.*;
>
>/**
> * Draw images scaled to 0.5, 1, 1.25, 1.5, and 2 times original size.
> */
>public class SnippetScaling {
>	public static void main (String [] args) {
>		Display display = new Display ();
>		Shell shell = new Shell (display, SWT.SHELL_TRIM | SWT.DOUBLE_BUFFERED);
>		shell.setLayout(new RowLayout(SWT.HORIZONTAL));
>		
>		createImages(createColumn(shell), new Image(display, "bin/org/eclipse/swt/snippets/eclipse16.png"));
>		createImages(createColumn(shell), new Image(display, "bin/org/eclipse/swt/snippets/warning.gif"));
>		createImages(createColumn(shell), display.getSystemImage (SWT.ICON_INFORMATION));
>		createImages(createColumn(shell), display.getSystemImage (SWT.ICON_WARNING));
>		createImages(createColumn(shell), display.getSystemImage (SWT.ICON_ERROR));
>		createImages(createColumn(shell), display.getSystemImage (SWT.ICON_QUESTION));
>		
>		final Image triangleCircle = new Image(display, 16, 16);
>		GC gc = new GC(triangleCircle);
>		gc.drawPolyline(new int[] { 0,0, 15,0, 0,15, 0,0 });
>		gc.drawOval(2, 2, 11, 11);
>		gc.dispose();
>		createImages(createColumn(shell), triangleCircle);
>		
>		shell.pack ();
>		shell.open ();
>		while (!shell.isDisposed ()) {
>			if (!display.readAndDispatch ())
>				display.sleep ();
>		}
>		display.dispose ();
>	}
>
>	private static Composite createColumn(Composite parent) {
>		Composite column = new Composite(parent, SWT.NONE);
>		column.setLayout(new FillLayout(SWT.VERTICAL));
>		return column;
>	}
>
>	private static void createImages(Composite parent, final Image image) {
>		Display display = parent.getDisplay();
>		
>		// ImageData#scaledTo(..)
>		Composite datas = new Composite(parent, SWT.NONE);
>		RowLayout rowLayout = new RowLayout();
>		rowLayout.marginTop = rowLayout.marginLeft = 10;
>		rowLayout.spacing = 0;
>		datas.setLayout(rowLayout);
>		Rectangle bounds = image.getBounds();
>		new Label(datas, SWT.NONE).setImage(new Image(display, image.getImageData().scaledTo(
>				(int) Math.round(bounds.width * 0.5) , (int) Math.round(bounds.height * 0.5))));
>		new Label(datas, SWT.NONE).setImage(image);
>		new Label(datas, SWT.NONE).setImage(new Image(display, image.getImageData().scaledTo(
>				(int) Math.round(bounds.width * 1.25) , (int) Math.round(bounds.height * 1.25))));
>		new Label(datas, SWT.NONE).setImage(new Image(display, image.getImageData().scaledTo(
>				(int) Math.round(bounds.width * 1.5) , (int) Math.round(bounds.height * 1.5))));
>		new Label(datas, SWT.NONE).setImage(new Image(display, image.getImageData().scaledTo(
>				bounds.width * 2 , bounds.height * 2)));
>		
>		// Canvas SWT.Paint
>		Canvas paint = new Canvas(parent, SWT.NONE);
>		paint.addListener (SWT.Paint, new Listener () {
>			@Override
>			public void handleEvent (Event e) {
>				Rectangle rect = image.getBounds ();
>				int width = rect.width;
>				int height = rect.height;
>				GC gc = e.gc;
>				int x = 10, y = 10;
>				int w = 0;
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 0.5), (int)Math.round(height * 0.5));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = width, height);
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 1.25), (int)Math.round(height * 1.25));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 1.5), (int)Math.round(height * 1.5));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = width * 2, height * 2);
>			}
>		});
>		
>		// Canvas SWT.Paint with Antialias
>		Canvas paintAnti = new Canvas(parent, SWT.NONE);
>		paintAnti.addListener (SWT.Paint, new Listener () {
>			@Override
>			public void handleEvent (Event e) {
>				Rectangle rect = image.getBounds ();
>				int width = rect.width;
>				int height = rect.height;
>				GC gc = e.gc;
>				gc.setAntialias(SWT.ON);
>				int x = 10, y = 10;
>				int w = 0;
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 0.5), (int)Math.round(height * 0.5));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = width, height);
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 1.25), (int)Math.round(height * 1.25));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 1.5), (int)Math.round(height * 1.5));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = width * 2, height * 2);
>			}
>		});
>		
>		Canvas paintLow = new Canvas(parent, SWT.NONE);
>		paintLow.addListener (SWT.Paint, new Listener () {
>			@Override
>			public void handleEvent (Event e) {
>				Rectangle rect = image.getBounds ();
>				int width = rect.width;
>				int height = rect.height;
>				GC gc = e.gc;
>				gc.setAntialias(SWT.ON);
>				gc.setInterpolation(SWT.LOW);
>				int x = 10, y = 10;
>				int w = 0;
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 0.5), (int)Math.round(height * 0.5));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = width, height);
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 1.25), (int)Math.round(height * 1.25));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 1.5), (int)Math.round(height * 1.5));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = width * 2, height * 2);
>			}
>		});
>		
>		Canvas paintHigh = new Canvas(parent, SWT.NONE);
>		paintHigh.addListener (SWT.Paint, new Listener () {
>			@Override
>			public void handleEvent (Event e) {
>				Rectangle rect = image.getBounds ();
>				int width = rect.width;
>				int height = rect.height;
>				GC gc = e.gc;
>				gc.setAntialias(SWT.ON);
>				gc.setInterpolation(SWT.HIGH);
>				int x = 10, y = 10;
>				int w = 0;
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 0.5), (int)Math.round(height * 0.5));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = width, height);
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 1.25), (int)Math.round(height * 1.25));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = (int)Math.round(width * 1.5), (int)Math.round(height * 1.5));
>				gc.drawImage (image, 0, 0, width, height, x += w, y, w = width * 2, height * 2);
>			}
>		});
>		
>		Canvas paintTransform = new Canvas(parent, SWT.NONE);
>		paintTransform.addListener (SWT.Paint, new Listener () {
>			@Override
>			public void handleEvent (Event e) {
>				Rectangle rect = image.getBounds ();
>				int width = rect.width;
>				int height = rect.height;
>				GC gc = e.gc;
>//				gc.setAntialias(SWT.ON);
>//				gc.setInterpolation(SWT.HIGH);
>				int x = 10, y = 10;
>				Transform transform = new Transform(display);
>				transform.scale(0.5f, 0.5f);
>				gc.setTransform(transform);
>				gc.drawImage (image, 0, 0, width, height, Math.round(x / 0.5f), Math.round(y / 0.5f), width, height);
>				x += Math.round(width * 0.5f);
>				transform.dispose();
>				
>				gc.setTransform(null);
>				gc.drawImage (image, 0, 0, width, height, x, y, width, height);
>				x += width;
>				
>				transform = new Transform(display);
>				transform.scale(1.25f, 1.25f);
>				gc.setTransform(transform);
>				gc.drawImage (image, 0, 0, width, height, Math.round(x / 1.25f), Math.round(y / 1.25f), width, height);
>				x += Math.round(width * 1.25f);
>				transform.dispose();
>				
>				transform = new Transform(display);
>				transform.scale(1.5f, 1.5f);
>				gc.setTransform(transform);
>				gc.drawImage (image, 0, 0, width, height, Math.round(x / 1.5f), Math.round(y / 1.5f), width, height);
>				x += Math.round(width * 1.5f);
>				transform.dispose();
>				
>				transform = new Transform(display);
>				transform.scale(2f, 2f);
>				gc.setTransform(transform);
>				gc.drawImage (image, 0, 0, width, height, Math.round(x / 2f), Math.round(y / 2f), width, height);
>				x += Math.round(width * 2f);
>				transform.dispose();
>			}
>		});
>	}
>}

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Attachments on bug 97506: 259133 | 272986 | 272988 | 284302 | 284303 | 284304 | 284305 | 288472