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Implement transitions for radial gradients

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This was missing in the initial implementation.
This commit is contained in:
Matthias Clasen 2016-01-07 16:30:19 -05:00
parent a7e2a9d8d3
commit 9e63e61b16
1 changed files with 98 additions and 0 deletions
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98
gtk/gtkcssimageradial.c
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@ -493,6 +493,103 @@ gtk_css_image_radial_compute (GtkCssImage *image,
return GTK_CSS_IMAGE (copy);
}
static GtkCssImage *
gtk_css_image_radial_transition (GtkCssImage *start_image,
GtkCssImage *end_image,
guint property_id,
double progress)
{
GtkCssImageRadial *start, *end, *result;
guint i;
start = GTK_CSS_IMAGE_RADIAL (start_image);
if (end_image == NULL)
return GTK_CSS_IMAGE_CLASS (_gtk_css_image_radial_parent_class)->transition (start_image, end_image, property_id, progress);
if (!GTK_IS_CSS_IMAGE_RADIAL (end_image))
return GTK_CSS_IMAGE_CLASS (_gtk_css_image_radial_parent_class)->transition (start_image, end_image, property_id, progress);
end = GTK_CSS_IMAGE_RADIAL (end_image);
if (start->repeating != end->repeating ||
start->stops->len != end->stops->len ||
start->size != end->size ||
start->circle != end->circle)
return GTK_CSS_IMAGE_CLASS (_gtk_css_image_radial_parent_class)->transition (start_image, end_image, property_id, progress);
result = g_object_new (GTK_TYPE_CSS_IMAGE_RADIAL, NULL);
result->repeating = start->repeating;
result->circle = start->circle;
result->size = start->size;
result->position = _gtk_css_value_transition (start->position, end->position, property_id, progress);
if (result->position == NULL)
goto fail;
if (start->sizes[0] && end->sizes[0])
{
result->sizes[0] = _gtk_css_value_transition (start->sizes[0], end->sizes[0], property_id, progress);
if (result->sizes[0] == NULL)
goto fail;
}
else
result->sizes[0] = 0;
if (start->sizes[1] && end->sizes[1])
{
result->sizes[1] = _gtk_css_value_transition (start->sizes[1], end->sizes[1], property_id, progress);
if (result->sizes[1] == NULL)
goto fail;
}
else
result->sizes[1] = 0;
for (i = 0; i < start->stops->len; i++)
{
GtkCssImageRadialColorStop stop, *start_stop, *end_stop;
start_stop = &g_array_index (start->stops, GtkCssImageRadialColorStop, i);
end_stop = &g_array_index (end->stops, GtkCssImageRadialColorStop, i);
if ((start_stop->offset != NULL) != (end_stop->offset != NULL))
goto fail;
if (start_stop->offset == NULL)
{
stop.offset = NULL;
}
else
{
stop.offset = _gtk_css_value_transition (start_stop->offset,
end_stop->offset,
property_id,
progress);
if (stop.offset == NULL)
goto fail;
}
stop.color = _gtk_css_value_transition (start_stop->color,
end_stop->color,
property_id,
progress);
if (stop.color == NULL)
{
if (stop.offset)
_gtk_css_value_unref (stop.offset);
goto fail;
}
g_array_append_val (result->stops, stop);
}
return GTK_CSS_IMAGE (result);
fail:
g_object_unref (result);
return GTK_CSS_IMAGE_CLASS (_gtk_css_image_radial_parent_class)->transition (start_image, end_image, property_id, progress);
}
static gboolean
gtk_css_image_radial_equal (GtkCssImage *image1,
GtkCssImage *image2)
@ -564,6 +661,7 @@ _gtk_css_image_radial_class_init (GtkCssImageRadialClass *klass)
image_class->parse = gtk_css_image_radial_parse;
image_class->print = gtk_css_image_radial_print;
image_class->compute = gtk_css_image_radial_compute;
image_class->transition = gtk_css_image_radial_transition;
image_class->equal = gtk_css_image_radial_equal;
object_class->dispose = gtk_css_image_radial_dispose;