Extract node canvas events and preview/node geometry shells

docs/modernization/roadmap.md

@@ -82,14 +82,29 @@ Current hotspot files:
 - `src/canvas.cpp`: 17 lines
 - `src/app_layout.cpp`: 125 lines
 - `src/canvas_modes.cpp`: 176 lines
-- `src/node.cpp`: 260 lines
+- `src/node.cpp`: 222 lines
 - `src/main.cpp`: 130 lines
 - `src/node_panel_brush.cpp`: 189 lines
-- `src/node_stroke_preview.cpp`: 280 lines
-- `src/node_canvas.cpp`: 219 lines
+- `src/node_stroke_preview.cpp`: 192 lines
+- `src/node_canvas.cpp`: 69 lines
 - `src/app.cpp`: 113 lines
 - `src/app_dialogs.cpp`: 168 lines
 
+Latest slice:
+
+- `NodeCanvas::handle_event()` now routes through
+  `handle_legacy_node_canvas_event(...)` in
+  `src/legacy_canvas_tool_services.*`, leaving `src/node_canvas.cpp` as a much
+  thinner controller shell.
+- The remaining low-level `NodeStrokePreview` viewport/query and texture-slot
+  plumbing now lives in
+  `src/legacy_node_stroke_preview_runtime_services.*` instead of staying
+  inline in `src/node_stroke_preview.cpp`.
+- The remaining generic `Node` geometry/state pocket for `SetSize(...)`,
+  `SetMinSize(...)`, `SetMaxSize(...)`, and `SetPosition(const glm::vec2)` now
+  lives in `src/legacy_ui_node_style.*` instead of staying inline in
+  `src/node.cpp`.
+
 Current architecture mismatches that must be treated as real blockers:
 
 - `pp_platform_api` still compiles Apple implementation files instead of only
@@ -262,6 +277,9 @@ Current architecture mismatches that must be treated as real blockers:
   pass planning, shader setup, and live render request assembly now also
   routes through `src/legacy_node_stroke_preview_runtime_services.*` instead
   of staying inline in `src/node_stroke_preview.cpp`, while
+  the low-level preview GL dispatch and texture-slot binding pocket now also
+  routes through `src/legacy_node_stroke_preview_runtime_services.*` instead
+  of staying inline in `src/node_stroke_preview.cpp`, while
   `NodeStrokePreview` remaining mix-pass planning and execution now also route
   through `src/legacy_node_stroke_preview_draw_services.*`, which trims the
   last dedicated mix-orchestration pocket from `src/node_stroke_preview.cpp`,

docs/modernization/tasks.md

@@ -235,8 +235,8 @@ Current slice:
   which trims another coherent setup pocket from
   `src/node_stroke_preview.cpp` even though worker/readback ownership and
   broader preview flow still remain inline.
-- `src/node_stroke_preview.cpp` is now 280 lines after moving the preview
-  background-capture and stroke-frame planning pocket into
+- `src/node_stroke_preview.cpp` is now 192 lines after moving the remaining
+  preview GL dispatch and texture-slot binding pocket into
   `legacy_node_stroke_preview_runtime_services.*`.
 - The remaining immediate preview pass shell in
   `NodeStrokePreview::draw_stroke_immediate()` now also routes through
@@ -337,10 +337,10 @@ Current slice:
   route through `execute_node_canvas_draw_merged_pass(...)`, which trims
   another coherent merged draw-orchestration block from the live node even
   though the broader draw loop still remains inline.
-- `NodeCanvas::handle_event()` now also routes through the local
-  `execute_node_canvas_handle_event(...)` helper, which trims another coherent
-  input-routing block from `src/node_canvas.cpp` even though the node still
-  owns broader canvas/controller behavior.
+- `NodeCanvas::handle_event()` now routes through
+  `handle_legacy_node_canvas_event(...)` in
+  `src/legacy_canvas_tool_services.*`, which moves the live input/controller
+  pocket out of `src/node_canvas.cpp` and keeps the node on a thinner shell.
 - `NodeCanvas` restore/clear context, resize handling, camera reset, buffer
   creation, cursor visibility/update, tick, and destroy ownership now also
   live in `src/legacy_node_canvas_state_services.*` instead of staying inline
@@ -352,6 +352,12 @@ Current slice:
   inline in `src/node_stroke_preview.cpp`, which materially thins the preview
   node around its runtime-facing shell even though live pass execution still
   remains.
+- The remaining low-level preview GL/runtime pocket for viewport queries,
+  clear-color restore, texture-slot binding, mixer unbind, and
+  destination/pattern texture plumbing now also lives in
+  `src/legacy_node_stroke_preview_runtime_services.*` instead of staying
+  inline in `src/node_stroke_preview.cpp`, which trims another coherent
+  runtime-facing shell pocket from the live node.
 - The remaining live render/pass orchestration in
   `NodeStrokePreview::draw_stroke_immediate()` now also lives in
   `src/legacy_node_stroke_preview_draw_services.*` instead of staying inline in
@@ -374,6 +380,11 @@ Current slice:
   also live in `src/legacy_node_canvas_draw_services.*` instead of staying
   inline in `src/node_canvas.cpp`, which materially reduces the live node to a
   thinner controller surface around event routing and state wrappers.
+- The remaining generic node geometry/state pocket for `Node::SetSize(...)`,
+  `SetMinSize(...)`, `SetMaxSize(...)`, and `SetPosition(const glm::vec2)`
+  now also lives in `src/legacy_ui_node_style.*` instead of staying inline in
+  `src/node.cpp`, which trims another coherent base scene-graph shell pocket
+  without changing the public surface.
 
 Write scope:
 - `src/node_stroke_preview.cpp`
@@ -848,6 +859,12 @@ Current slice:
   `Node::GetRTL()` now also lives in `src/legacy_ui_node_style.*` instead of
   staying inline in `src/node.cpp`, which trims another coherent generic node
   shell pocket without changing the public surface.
+- The remaining geometry/state pocket for `Node::SetSize(...)`,
+  `Node::SetMinSize(...)`, `Node::SetMaxSize(...)`, and
+  `Node::SetPosition(const glm::vec2)` now also lives in
+  `src/legacy_ui_node_style.*` instead of staying inline in `src/node.cpp`,
+  which materially thins the live base shell by moving the cached size/position
+  mutation and redraw signaling out of the node file.
 - The remaining generic `Node` lifecycle/state pocket for no-op lifecycle
   hooks, add/remove propagation, move construction, destruction cleanup, and
   base clone plumbing now also lives in `src/legacy_ui_node_lifecycle.*`