|FIX][ENH] Underline and Struck out for TrueType
Boris.Gaertner at gmx.net
Thu Jun 3 13:29:22 UTC 2004
"Yoshiki Ohshima" <Yoshiki.Ohshima at acm.org> wrote: (at May 07)
> Here is a change set to make it possible to put 'underlined' and
> 'struckOut' emphasis to the TrueType font.
> It works fine with 3.6, and sort of works with 3.7b. The problem
> with 3.7b is that the handling of multiple text attributes is broken.
"Martin Drautzburg" <martin.drautzburg at web.de> wrote (at May 21)
> squeak 3.7beta
> Is there are way to change the font/size/emphasis in Class comments to
> make them look nicer and more structured. I remember I used to do this
> but either forgot or it no longer works in 3.7. Could also be a
> problem of "shout".
Regrettably I was unable to immediately look into this problem,
but now I think that I understand what happens.
Here are my findings (for Squeak 3.7 beta #5923) :
1. In the Morphic environment, you cannot change the size of
a piece of text when you work in the code view of the browser.
In the MVC environment, you can change the size of a selected
piece of text (with alt+1 .. alt+ 5).
2. When you explore the PluggableTextMorph that holds
the method text, you find, that its textMorph (an instance
of TextMorphForEditView) has a text style with a font array
of size 1. This explains why it is not possible to change the
text size: To display glyphs of various size, we need the
full text style (the fontArray of such a TextStyle contains
StrikeFonts for all available glyph sizes), not one that is
restricted to one font size.
As a general rule, TextStyles with exactly one font
should be created only for use with visual elements that
are not designed to display glyphs of different height.
(PopUpMenu is such a visual element)
Attached you find:
1. Additions to Preferences class that give you the
possibility to select a font family and a default font size.
(I left the #chooseCodeFont as it is and added a new
2. A change in Text class>>fromString: that I proposed
earlier: I really think that we should create instances of
Text not with attribute
(TextFontChange fontNumber: TextStyle default defaultFontIndex)
TextEmphasis normal is no emphasis at all, and the display
machinery uses the default font size of a text style when it has
to display a piece of text that has no TextFontChange attribute
and no TextFontReference attribute.
I remember that I was told some time ago that Texts
without a TextFontChange attribute may cause problems
but I do not know why or where. Anyway, I will try
to identify and to fix problems that will berported
on this list.
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