RCP 0.8.2: Charts Engine, Italic style defined in Font default preference doesn't seem to work

Italic style defined in Font preference of Charts engine doesn’t seem to work.
Only bold and regular seem to be taken in account.
Tested on Windows with JFC Charts Engine.

(from redmine: issue id 3140, created on 2021/07/23 by Sebastien Jacquot)

Preferences dump :

• scope: bundle_defaults node: org.txm.chartsengine.core : chart_font = 1|SansSerif|14|0
• scope: instance node: org.txm.chartsengine.core : chart_font = 1|Monospaced|14|0
• scope: bundle_defaults node: org.txm.progression.core : chart_font = 1|SansSerif|14|0

Setting the font preference, sets the chartsengine.core instance preference, but the result default preference is used instead

Warning the font preference is not working since TXM-0.8.3

added charts type::bug + 1 deleted label

changed milestone to %TXM 0.X.X

assigned to @sjacquot

changed milestone to %TXM 0.8.4

changed the description

changed the description

Became obsolete since we have simplified the font choice in preference page using now Arial, Courier and Times.

However there is a new bug with this preference, see: #4030

Why does 'slant' property became obsolete?

Arial, Courier and Times are font family names.

Those names don't say anything about 'slant', 'weight' or 'spacing' font properties.

More precisely, the issue became obsolete because it's too old, internal system has changed and since we have simplified the font choice in preference page using now Arial, Courier and Times. However, after some new tests the italic, bold, etc. default preference works as expected at core level.

But we do not use anymore the JFace font chooser in preference page UI so the user doesn't have access to "font size" and "font style" default preference. The size and the style are still editable for one chart, in the chart rendering tool bar.

Old JFace font chooser:

New widgets since TXM 0.8.2:

Need some specifications if we want to extend the user default preference font configuration.

Misc, rendering chart tool bar:

Dev note:

// FIXME: SJ: new version, but actually it should not be based on JFace format. Most of the font usage is a at core/non-ui level and use AWT Font object.
// May need to use e.g. 3 variables font_size, font_type, font_name. Then if we need to use a SWT/JFace Font object, make a function to convert it, 2 ways.
// default font family in JFace representation
String defaultFont = "1|SansSerif|14|0"; //NON-NLS-1

Okay.

I understand that we can always choose the 'family' [font] (which includes 'spacing'), 'style' (which includes 'slant' and 'weight') and 'size' at chart level.

So it depends on whether we want to add global 'font-style' and 'font-size' preferences (which we could set before in the old global font selection widget) - reproducing the parameters at chart level - to the global font[-family] preference.

closed

added status::rejected label