feat(gui): implement user based font scaling

[Mauller]

This PR adds user based font scaling adjustment to the game.

The value can be set within the options.ini by setting ResolutionFontAdjustment = 10 etc, where the value is a percentage increase, the default being 0% of the original scale.

This value acts on the normal ini based resolution scaling to give some user flexibility.

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TODO:

• Replicate in generals

[Mauller]

Tweaked some naming but theres likely going to be the odd bit of name tweaking still.

[xezon]

I suggest to merge this change before the other, so we can experiment with this.

[Mauller]

I suggest to merge this change before the other, so we can experiment with this.

i will tweak and rebase this on main so it can be merged independent of other font scaling tweaks.

[Mauller]

Rebased, removed the other font scaling stuff and tweaked based on feedback.

This now will not scale the font if the value is set to zero, which i have set as the default.

[xezon]

This is not what I meant :)

adjustFactor = 1.0f + (adjustFactor-1.0f) * m_resolutionFontSizeAdjustment * TheGlobalData->m_resolutionFontAdjustment; was fine, because if TheGlobalData->m_resolutionFontAdjustment is 0, then the adjust factor simply will be one: no resolution scaling, text has same size as with 800 x 600

* (1 + TheGlobalData->m_resolutionFontAdjustment) is misleading, because 1 becomes 2 (doubling).

[Mauller]

This is not what I meant :)

adjustFactor = 1.0f + (adjustFactor-1.0f) * m_resolutionFontSizeAdjustment * TheGlobalData->m_resolutionFontAdjustment; was fine, because if TheGlobalData->m_resolutionFontAdjustment is 0, then the adjust factor simply will be one: no resolution scaling, text has same size as with 800 x 600

* (1 + TheGlobalData->m_resolutionFontAdjustment) is misleading, because 1 becomes 2 (doubling).

Yeah i thought you meant that zero would result in the extra user option not having any effect on the current scaling.
So the game essentially just scales like it normally would.

Also this is the game with just the raw Font sizes, so m_resolutionFontAdjustment at zero

[Mauller]

Tweaked and pushed.

[xezon]

One more thought: If a user sets the scale to 1, then we would expect a linear scale. But instead it would "secretly" scale by 0.7 * 1. I wonder if we should do something about that.

[Mauller]

One more thought: If a user sets the scale to 1, then we would expect a linear scale. But instead it would "secretly" scale by 0.7 * 1. I wonder if we should do something about that.

Should we override whatever m_resolutionFontSizeAdjustment is set to with the user set option? But take whatever m_resolutionFontSizeAdjustment is as the default?

Situation here ends up a bit like what the scroll Anchor PR is doing.
We consider the user option to be the source of truth and the ini value as the default.

[xezon]

Maybe start m_resolutionFontSizeAdjustment as -1 and if it less than 0 then we use Language.ini settings, otherwise user setting. Not sure.