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snapshot: Don't flip textures

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... or gradients or borders or shadows. Instead, ensure that affines
have non-negative scale factors. Otherwise add a transform node.

The only place where this check is not necessary is color nodes, but
special casing them seems not worth it.
This commit is contained in:
Benjamin Otte 2020-09-28 16:09:06 +02:00
parent 9267f705ef
commit 651c92c0ed
1 changed files with 15 additions and 2 deletions
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17
gtk/gtksnapshot.c
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@ -697,9 +697,22 @@ gtk_snapshot_ensure_affine (GtkSnapshot *snapshot,
{
gtk_snapshot_autopush_transform (snapshot);
state = gtk_snapshot_get_current_state (snapshot);
gsk_transform_to_affine (state->transform, scale_x, scale_y, dx, dy);
}
else if (gsk_transform_get_category (state->transform) == GSK_TRANSFORM_CATEGORY_2D_AFFINE)
{
gsk_transform_to_affine (state->transform, scale_x, scale_y, dx, dy);
if (*scale_x < 0.0 || *scale_y < 0.0)
{
gtk_snapshot_autopush_transform (snapshot);
state = gtk_snapshot_get_current_state (snapshot);
gsk_transform_to_affine (state->transform, scale_x, scale_y, dx, dy);
}
}
else
{
gsk_transform_to_affine (state->transform, scale_x, scale_y, dx, dy);
}
gsk_transform_to_affine (state->transform, scale_x, scale_y, dx, dy);
}
static void