Blocks palette: tabs, options, drag insertion and -INSERT

Rebuild the Blocks palette with Current Drawing / Recent / Favorites /
Libraries tabs, wildcard filter, six views, insertion options, click and
drop insertion and a block context menu. INSERT opens the palette, the
new -INSERT runs on the command line, the ribbon Insert button becomes a
block gallery, and BLOCKMRULIST, BLOCKREDEFINEMODE, BLOCKNAVIGATE,
BLOCKSTATE, EXPLMODE and INSNAME are added.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/ui/ribbon/mod.rs

@@ -20,7 +20,7 @@ use crate::modules::{CadModule, IconKind, RibbonGroup, RibbonItem};
 use crate::plugin::all_ribbon_modules;
 use crate::ui::properties::{linetype_display_name, lw_options, LinetypeItem};
 
-mod widgets;
+pub(crate) mod widgets;
 mod draw_panel;
 pub(crate) use draw_panel::tools as panel_tools;
 mod modify_panel;
@@ -745,6 +745,19 @@ impl Ribbon {
 
     // ── Dropdown overlay ──────────────────────────────────────────────────
 
+    /// Place `panel` (`w` wide) under dropdown `id`, closing on a click
+    /// outside it.
+    pub fn place_dropdown<'a>(
+        &self,
+        id: &str,
+        panel: Element<'a, Message>,
+        w: f32,
+        win_w: f32,
+    ) -> Element<'a, Message> {
+        let (align_right, h_pad, top) = self.dd_anchor(id, w, win_w);
+        dropdown_backdrop(position_ribbon_dropdown(panel, align_right, h_pad, top))
+    }
+
     pub fn dropdown_overlay(
         &self,
         undo_labels: &[String],

src/ui/ribbon/widgets.rs

@@ -446,7 +446,7 @@ pub(super) fn combo_btn_style(
     }
 }
 
-pub(super) fn popup_row_style(theme: &Theme, status: button::Status) -> button::Style {
+pub(crate) fn popup_row_style(theme: &Theme, status: button::Status) -> button::Style {
     let palette = theme.palette();
     let pair = if matches!(status, button::Status::Hovered | button::Status::Pressed) {
         palette.background.weak
@@ -460,7 +460,7 @@ pub(super) fn popup_row_style(theme: &Theme, status: button::Status) -> button::
     }
 }
 
-pub(super) fn popup_panel_style(theme: &Theme) -> container::Style {
+pub(crate) fn popup_panel_style(theme: &Theme) -> container::Style {
     let palette = theme.palette();
     container::Style {
         background: Some(Background::Color(palette.background.base.color)),

src/ui/window/pdf_dialogs.rs

@@ -233,13 +233,13 @@ pub fn click_page(selected: &mut Vec<usize>, anchor: &mut usize, page: usize, ct
 // accent-coloured card titles, segmented choices and toggle chips, with the
 // help button on the left of the footer and the named action on the right.
 
-fn accent_text(theme: &Theme) -> text::Style {
+pub(crate) fn accent_text(theme: &Theme) -> text::Style {
     text::Style {
         color: Some(theme.palette().primary.base.color),
     }
 }
 
-fn card_style(theme: &Theme) -> container::Style {
+pub(crate) fn card_style(theme: &Theme) -> container::Style {
     container::Style {
         background: Some(Background::Color(theme.palette().background.weak.color)),
         border: Border {
@@ -251,7 +251,7 @@ fn card_style(theme: &Theme) -> container::Style {
     }
 }
 
-fn well_style(theme: &Theme) -> container::Style {
+pub(crate) fn well_style(theme: &Theme) -> container::Style {
     container::Style {
         background: Some(Background::Color(theme.palette().background.base.color)),
         border: Border {