feat(presets): Implement NamedViewPresets for per-file view settings

src/gui_2.py

@@ -238,6 +238,7 @@ class App:
   self.shader_uniforms = {'crt': 1.0, 'scanline': 0.5, 'bloom': 0.8}
   self.shader_uniforms = {'crt': 1.0, 'scanline': 0.5, 'bloom': 0.8}
   self.ui_new_context_preset_name = ""
+  self.ui_new_vp_name = ""
   self._focus_md_cache: dict[str, str] = {}
   self.ui_inspecting_ast_file = None
   self._show_ast_inspector = False
@@ -3048,6 +3049,34 @@ class App:
        changed_vm, new_idx = imgui.combo(f"##vm{i}", current_idx, view_modes)
        if changed_vm:
         f_item.view_mode = view_modes[new_idx]
+       
+       imgui.same_line()
+       if imgui.button(f"[Save]##vpsave{i}"):
+        imgui.open_popup(f"save_vp_popup{i}")
+       
+       if imgui.begin_popup(f"save_vp_popup{i}"):
+        imgui.text("Preset Name:")
+        changed_pname, self.ui_new_vp_name = imgui.input_text(f"##pname{i}", self.ui_new_vp_name)
+        if imgui.button("OK"):
+         if self.ui_new_vp_name.strip():
+          self.controller._cb_save_view_preset(self.ui_new_vp_name.strip(), f_item)
+          self.ui_new_vp_name = ""
+          imgui.close_current_popup()
+        imgui.end_popup()
+
+       imgui.same_line()
+       if imgui.button(f"[Load]##vpload{i}"):
+        imgui.open_popup(f"load_vp_popup{i}")
+       
+       if imgui.begin_popup(f"load_vp_popup{i}"):
+        vp_names = sorted([vp.name for vp in self.controller.view_presets])
+        if not vp_names:
+         imgui.text("No presets saved.")
+        for vp_name in vp_names:
+         if imgui.selectable(vp_name):
+          self.controller._cb_apply_view_preset(vp_name, f_item)
+          imgui.close_current_popup()
+        imgui.end_popup()
        if hasattr(f_item, "custom_slices") and f_item.custom_slices:
         imgui.same_line()
         imgui.text_colored(imgui.ImVec4(1.0, 0.5, 0.0, 1.0), "[Slices Active]")