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st/scroll-view: Allow removing edge fade

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Remove the fade effect when the css property `-st-vfade-offset` is removed
from a widget. The effect isn't added when the property never existed.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3047>
This commit is contained in:
Julian Sparber 2023-12-07 17:37:35 +01:00
parent 9f7a7ed202
commit 33c074c738
1 changed files with 9 additions and 13 deletions
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22
src/st/st-scroll-view.c
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@ -720,24 +720,20 @@ static void
st_scroll_view_style_changed (StWidget *widget) st_scroll_view_style_changed (StWidget *widget)
{ {
StScrollView *self = ST_SCROLL_VIEW (widget); StScrollView *self = ST_SCROLL_VIEW (widget);
gboolean has_vfade, has_hfade;
double vfade_offset = 0.0; double vfade_offset = 0.0;
double hfade_offset = 0.0; double hfade_offset = 0.0;
StThemeNode *theme_node = st_widget_get_theme_node (widget); StThemeNode *theme_node = st_widget_get_theme_node (widget);
has_vfade = st_theme_node_lookup_length (theme_node, "-st-vfade-offset", FALSE, &vfade_offset); st_theme_node_lookup_length (theme_node, "-st-vfade-offset", FALSE, &vfade_offset);
has_hfade = st_theme_node_lookup_length (theme_node, "-st-hfade-offset", FALSE, &hfade_offset); st_theme_node_lookup_length (theme_node, "-st-hfade-offset", FALSE, &hfade_offset);
if (has_vfade || has_hfade) st_scroll_view_update_fade_effect (self,
{ &(ClutterMargin) {
st_scroll_view_update_fade_effect (self, .top = vfade_offset,
&(ClutterMargin) { .bottom = vfade_offset,
.top = vfade_offset, .left = hfade_offset,
.bottom = vfade_offset, .right = hfade_offset,
.left = hfade_offset, });
.right = hfade_offset,
});
}
ST_WIDGET_CLASS (st_scroll_view_parent_class)->style_changed (widget); ST_WIDGET_CLASS (st_scroll_view_parent_class)->style_changed (widget);
} }