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Fonts in VW7.4.1

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BREITH Karl-Albert (AREVA)

Fonts in VW7.4.1

I am using the following method to determine a font:
bounds: the view's bounds
width: the width of my text that should fit into the bounds calculated on default font (12 pixel).
…..
        dPixelSize := (style characterAttributes defaultQueryFor: nil) pixelSize.
        width := width max: 1.
        pixelSize := ((dPixelSize * ((bounds extent x - 2) / width)
                                min: (bounds extent y - count - 2) / count) * style scalingFactor)
                                asInteger.
        cStyle := VariableCharacterAttributes newWithDefaultAttributes.
        cStyle setDefaultQuery: ((FontDescription new)
                                family: #('*');
                                manufacturer: #('*');
                                fixedWidth: false;
                                serif: false;
                                italic: false;
                                boldness: 0.5;
                                pixelSize: pixelSize).
        cStyle noScaling.
        style := TextAttributes new.
        style setCharacterAttributes: cStyle.
        style
                lineGrid: pixelSize + 1;
                baseline: pixelSize.
(ComposedText withText: 'Hallo' asText allBold style: style) inspect.

The result surprises me:
Having a calculated pixelSize of 8, the text results in bigger characters than having a pixelSize of 9.

Has anyone an idea why that could be the case ?

Karl

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Karl Breith
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Methods & Codes (FDEEC-G)

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Steven Kelly

RE: Fonts in VW7.4.1

Fonts in VW7.4.1

Quick guess, without testing: you're using VariableCharacterAttributes, the size of which can change according to the platform and/or Locale. Try using plain CharacterAttributes.

Steve

-----Original Message-----
From: BREITH Karl-Albert FDEEC (AREVA NP GmbH) [mailto:[hidden email]]
Sent: 20. huhtikuuta 2007 14:56
To: VWNC,
Subject: Fonts in VW7.4.1

The result surprises me:
Having a calculated pixelSize of 8, the text results in bigger characters than having a pixelSize of 9.

Has anyone an idea why that could be the case ?

Karl

Holger Kleinsorgen-4

Re: Fonts in VW7.4.1

In reply to this post by BREITH Karl-Albert (AREVA)

BREITH Karl-Albert FDEEC (AREVA NP GmbH) wrote:
> I am using the following method to determine a font:
> bounds: the view's bounds
>...
> The result surprises me:
> Having a calculated pixelSize of 8, the text results in bigger characters than having a pixelSize of 9.

note:

1. the font lookup searches for a best match for the font description,
which does not necessarily have the requested size
(see #measureDistancesFrom:to:stopAt:)

2. I don't know if it has been fixed, but "Screen default resolution"
always returns 75dpi on Windows plattforms, even though the default
resolution is 96 dpi (and is also adjustable).

in the Open Repository there's also a package named "Font-Lookup" which
seems to fix some issues, I haven't used it yet though.

BREITH Karl-Albert (AREVA)

AW: Fonts in VW7.4.1

In reply to this post by Steven Kelly

Fonts in VW7.4.1

I have got some ideas form the VWNC group. Thanks a lot.

I am going to try which idea works best for me.

e.g. on Windows XP the fonts work fine, on Linux and HP

not. And yes, I am using VariableCharacterAttributes.

Karl