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cssshadowvalue: Only create 2 shadows values for transitions

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This is for cases where we want to transition from "no shadow" to
"shadow", which we need quite a lot.
This commit is contained in:
Timm Bäder 2020-01-13 08:37:52 +01:00
parent 7c75ea376f
commit a3769eb0e5
1 changed files with 18 additions and 6 deletions
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24
gtk/gtkcssshadowvalue.c
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@ -192,17 +192,29 @@ gtk_css_shadow_value_new (GtkCssValue *hoffset,
return retval;
}
static GtkCssValue transition_inset_singleton = { &GTK_CSS_VALUE_SHADOW, 1, TRUE, .inset = TRUE };
static GtkCssValue transition_outset_singleton = { &GTK_CSS_VALUE_SHADOW, 1, TRUE, .inset = FALSE };
GtkCssValue *
_gtk_css_shadow_value_new_for_transition (GtkCssValue *target)
{
GtkCssValue *result;
g_return_val_if_fail (target->class == &GTK_CSS_VALUE_SHADOW, NULL);
return gtk_css_shadow_value_new (_gtk_css_number_value_new (0, GTK_CSS_PX),
_gtk_css_number_value_new (0, GTK_CSS_PX),
_gtk_css_number_value_new (0, GTK_CSS_PX),
_gtk_css_number_value_new (0, GTK_CSS_PX),
target->inset,
gtk_css_color_value_new_transparent ());
if (target->inset)
result = &transition_inset_singleton;
else
result = &transition_outset_singleton;
if (G_UNLIKELY (!result->hoffset))
{
result->hoffset = result->voffset = result->spread = result->radius = _gtk_css_number_value_new (0, GTK_CSS_PX);
result->color = gtk_css_color_value_new_transparent ();
}
return _gtk_css_value_ref (result);
}
enum {