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Add screen magnifier

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This adds a screen magnifier which can be controlled with the
`ZoomIn` / `ZoomOut` and `ToggleMagnify` actions.

It scales up part of the rendered framebuffer so the magnification
may end up looking blurry depending on the magnification scale.

PR #1774
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Simon Long 2024-05-15 23:07:23 +01:00 • committed by GitHub
parent ad15c0474d
commit 8ba066a1a5
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19
docs/rc.xml.all
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@ -589,4 +589,23 @@
<menu>
<ignoreButtonReleasePeriod>250</ignoreButtonReleasePeriod>
</menu>
<!--
Magnifier settings
'width' sets the width in pixels of the magnifier window.
'height' sets the height in pixels of the magnifier window.
'initScale' sets the initial magnification factor at boot.
'increment' sets the amount by which the magnification factor
changes when 'ZoomIn' or 'ZoomOut' are called.
'useFilter' sets whether to use a bilinear filter on the magnified
output or simply to take nearest pixel.
-->
<magnifier>
<width>400</width>
<height>400</height>
<initScale>2.0</initScale>
<increment>0.2</increment>
<useFilter>true</useFilter>
</magnifier>
</labwc_config>