move close_button to ui/widgets.rs as x_button

Signed-off-by: kernelkind <kernelkind@gmail.com>

crates/notedeck_columns/src/ui/widgets.rs

@@ -0,0 +1,36 @@
+use egui::{emath::GuiRounding, Pos2, Stroke};
+
+use super::anim::{AnimationHelper, ICON_EXPANSION_MULTIPLE};
+
+pub fn x_button(rect: egui::Rect) -> impl egui::Widget {
+    move |ui: &mut egui::Ui| -> egui::Response {
+        let max_width = rect.width();
+        let helper = AnimationHelper::new_from_rect(ui, "user_search_close", rect);
+
+        let fill_color = ui.visuals().text_color();
+
+        let radius = max_width / (2.0 * ICON_EXPANSION_MULTIPLE);
+
+        let painter = ui.painter();
+        let ppp = ui.ctx().pixels_per_point();
+        let nw_edge = helper
+            .scale_pos_from_center(Pos2::new(-radius, radius))
+            .round_to_pixel_center(ppp);
+        let se_edge = helper
+            .scale_pos_from_center(Pos2::new(radius, -radius))
+            .round_to_pixel_center(ppp);
+        let sw_edge = helper
+            .scale_pos_from_center(Pos2::new(-radius, -radius))
+            .round_to_pixel_center(ppp);
+        let ne_edge = helper
+            .scale_pos_from_center(Pos2::new(radius, radius))
+            .round_to_pixel_center(ppp);
+
+        let line_width = helper.scale_1d_pos(2.0);
+
+        painter.line_segment([nw_edge, se_edge], Stroke::new(line_width, fill_color));
+        painter.line_segment([ne_edge, sw_edge], Stroke::new(line_width, fill_color));
+
+        helper.take_animation_response()
+    }
+}