forked from AuroraMiddleware/gtk
c63087a563
To build a better world sometimes means having to tear the old one down.
-- Alexander Pierce, "Captain America: The Winter Soldier"
ATK served us well for nearly 20 years, but the world has changed, and
GTK has changed with it. Now ATK is mostly a hindrance towards improving
the accessibility stack:
- it maps to a very specific implementation, AT-SPI, which is Linux and
Unix specific
- it requires implementing the same functionality in three different
layers of the stack: AT-SPI, ATK, and GTK
- only GTK uses it; every other Linux and Unix toolkit and application
talks to AT-SPI directly, including assistive technologies
Sadly, we cannot incrementally port GTK to a new accessibility stack;
since ATK insulates us entirely from the underlying implementation, we
cannot replace it piecemeal. Instead, we're going to remove everything
and then incrementally build on a clean slate:
- add an "accessible" interface, implemented by GTK objects directly,
which describe the accessible role and state changes for every UI
element
- add an "assistive technology context" to proxy a native accessibility
API, and assign it to every widget
- implement the AT context depending on the platform
For more information, see: https://gitlab.gnome.org/GNOME/gtk/-/issues/2833
28 lines
987 B
XML
28 lines
987 B
XML
<?xml version="1.0" encoding="UTF-8"?>
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<interface domain="gtk40">
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<template class="GtkVolumeButton" parent="GtkScaleButton">
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<property name="has-tooltip">1</property>
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<property name="adjustment">
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<object class="GtkAdjustment">
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<property name="upper">1</property>
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<property name="step-increment">0.02</property>
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<property name="page-increment">0.2</property>
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</object>
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</property>
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<property name="icons">audio-volume-muted
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audio-volume-high
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audio-volume-low
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audio-volume-medium</property>
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<signal name="query-tooltip" handler="cb_query_tooltip" swapped="no"/>
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<signal name="value-changed" handler="cb_value_changed" swapped="no"/>
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<child internal-child="plus_button">
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<object class="GtkButton" id="scalebutton-plus_button1">
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</object>
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</child>
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<child internal-child="minus_button">
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<object class="GtkButton" id="scalebutton-minus_button1">
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</object>
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</child>
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</template>
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</interface>
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