What is the best way to get the width in pixels of a string?

[BobPhoenix]

How would I go about determining the size in pixels of a string with Java calls? I'm not familiar enough with Java and the way I was trying to get it (with java.awt.FontMetrics) doesn't work. I'm assuming that is because it is an abstract class. So how else could I do this from within Studio.

Thank you for any suggestions.
BobP.

P.S. I'm trying to implement a scrollable text input. I've got it working with a character count of the string but would like to get down to the pixel level if it is possible.

[gplasky]

I don't know but I think it was nielm who actually posted an STV that had examples of acual scroll bars in Sage TV. This had scrolling panels, scrolling tables, multi column and wrapping. Might this help you?
Scrollbars

Gerry

[BobPhoenix]

Originally Posted by gplasky

I don't know but I think it was nielm who actually posted an STV that had examples of acual scroll bars in Sage TV. This had scrolling panels, scrolling tables, multi column and wrapping. Might this help you?
Scrollbars

Gerry

I take a look. It might. Thanks.

[BobPhoenix]

OK I figured a way to make my idea work with one exception. It appears that at 640x480 the font size is ruffly the same as the equivalent in WordPad. But it is obvious that the font is enlarged when going to full screen or reduced when going to 320x240. So my question is what is the ratio used? Because the letters at 320x240 are not 1/2 half size and the letters at 1280x960 are not 2x the size.

Thoughts?

BobP.

[BobPhoenix]

I thought I would post the solution I found for this in case anybody was interested:

    public static int getTextWidth(String text, String fontName, 
            String fontStyle, int fontSize, int screenWidth) {
        float size = (screenWidth / 640.0F) * fontSize;
        java.awt.Font font = java.awt.Font.decode(fontName + "-" + fontStyle + "-" + fontSize);
        font = font.deriveFont(size);
        java.awt.Label label = new java.awt.Label(text);
        java.awt.FontMetrics fm = label.getFontMetrics(font);
        int width = fm.stringWidth(text);
        return width;
    }

Where:

1. Text is the string you want the size for.
2. Font??? are the font attributes from a theme.
3. ScreenWidth is the value returned from GetFullUIWidth api call.
4. The label can also be a pre-existing label and does not have to contain the text you want the size for I just used it that was as a convenience.

The next hardest part is figuring out the size of the TextInput Widget but it is just a combination of GetFullUIWidth() and all the sizes of panels and insets in between the UIWidth and the TextInput widget. It would be nice if another API was added that would allow you to pass a widget preferably or the widget name and return the size on screen in pixels!

BobP.