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Label sizes calculated wrong for some fonts on Chrome [message #1436219]

Thu, 02 October 2014 15:17

John Gymer

Messages: 279
Registered: November 2012
Location: UK

Senior Member

RAP appears to calculate the width/height of a Label incorrectly on Chrome (37) for certain fonts.
I used "Bauhaus 93" font, and for an instance the Label displays the full text, then after a momentary delay, it shrinks the size of the Label hiding the last word of text in the Label as a consequence.

Here is a snippet:

/* DEMONSTRATES RAP issue with unusual font sizes/styles - label not big enough */
package bug.snippet;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

public class Bugsy {
	private Display display;
	private Shell shell;
	private static Label lab;
	
	public void begin() {
		System.out.println("BugSnippy Starting...");
		
		// create the Shell
		display = new Display();
		shell = new Shell(display, SWT.TITLE|SWT.CLOSE|SWT.RESIZE);
		shell.setText("Shell");
		shell.setFullScreen(true);
		shell.setBackground(new Color(null, new RGB(255,192,255)));
		FormLayout layout = new FormLayout();
		shell.setLayout(layout);

		//create the label
		lab = new Label(shell, SWT.NONE);
		lab.setText("Wonderful stuff is great and fab");

		FontData fontData;
		fontData = new FontData();
		fontData.setName("Bauhaus 93");
		fontData.setStyle(SWT.NONE);
		fontData.setHeight(20);
		Font font = new Font(display, fontData);
		
		lab.setFont(font);

		//set label's position
		FormData fd = new FormData();
		fd.left = new FormAttachment(0, 5);
		fd.top = new FormAttachment(0, 50);
		lab.setLayoutData(fd);

		shell.open();

		System.out.println("BugSnippy Done!");
	}

}

A screen shot to help explain...
index.php/fa/19363/0/

Thanks, John

Attachment: TruncatedLabelRAPIssue.jpg
(Size: 53.50KB, Downloaded 455 times)

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Re: Label sizes calculated wrong for some fonts on Chrome [message #1438634 is a reply to message #1436219]

Mon, 06 October 2014 09:48

Tim Buschtoens

Messages: 396
Registered: July 2009

Senior Member

Hi.

If it's reproduceable in RAP 2.3 or later, just open a bugzilla entry
with that snippet and possibly instructions how to get that font.

Greetings,
Tim

Am 02.10.2014 17:17, schrieb John Gymer:
> RAP appears to calculate the width/height of a Label incorrectly on Chrome (37) for certain fonts.
> I used "Bauhaus 93" font, and for an instance the Label displays the full text, then after a momentary delay, it shrinks the size of the Label hiding the last word of text in the Label as a consequence.
>
> Here is a snippet:
>
> /* DEMONSTRATES RAP issue with unusual font sizes/styles - label not big enough */
> package bug.snippet;
>
> import org.eclipse.swt.SWT;
> import org.eclipse.swt.graphics.Color;
> import org.eclipse.swt.graphics.Font;
> import org.eclipse.swt.graphics.FontData;
> import org.eclipse.swt.graphics.RGB;
> import org.eclipse.swt.layout.FormAttachment;
> import org.eclipse.swt.layout.FormData;
> import org.eclipse.swt.layout.FormLayout;
> import org.eclipse.swt.widgets.Display;
> import org.eclipse.swt.widgets.Label;
> import org.eclipse.swt.widgets.Shell;
>
> public class Bugsy {
> private Display display;
> private Shell shell;
> private static Label lab;
>
> public void begin() {
> System.out.println("BugSnippy Starting...");
>
> // create the Shell
> display = new Display();
> shell = new Shell(display, SWT.TITLE|SWT.CLOSE|SWT.RESIZE);
> shell.setText("Shell");
> shell.setFullScreen(true);
> shell.setBackground(new Color(null, new RGB(255,192,255)));
> FormLayout layout = new FormLayout();
> shell.setLayout(layout);
>
> //create the label
> lab = new Label(shell, SWT.NONE);
> lab.setText("Wonderful stuff is great and fab");
>
> FontData fontData;
> fontData = new FontData();
> fontData.setName("Bauhaus 93");
> fontData.setStyle(SWT.NONE);
> fontData.setHeight(20);
> Font font = new Font(display, fontData);
>
> lab.setFont(font);
>
> //set label's position
> FormData fd = new FormData();
> fd.left = new FormAttachment(0, 5);
> fd.top = new FormAttachment(0, 50);
> lab.setLayoutData(fd);
>
> shell.open();
>
> System.out.println("BugSnippy Done!");
> }
>
> }
>
>
> A screen shot to help explain...
>
>
> Thanks, John
>

--
Tim Buschtöns

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

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Re: Label sizes calculated wrong for some fonts on Chrome [message #1438648 is a reply to message #1436219]

Mon, 06 October 2014 10:05

Ivan Furnadjiev

Messages: 2426
Registered: July 2009
Location: Sofia, Bulgaria

Senior Member

Hi,
It's reproducible for me with RAP from master. Only in IE11 the size of
the label is correct. In Firefox, Chrome and Opera the label is cut-off.
The "Bauhaus 93" font exists in my Windows 7 x64 installation. I have no
idea what's wrong with this font. Please open a bugzilla about this issue.
Thanks,
Ivan

--
Ivan Furnadjiev

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

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