# Changes 0.3.1

- Add Layout API and let Menu use it
- Add DragData (for float, double, int, etc)
- Add IO Delta calculation to not require a users delta value
- Add Config Var for SLider drag min size
- Remove Hid::Ref input of Containers as IO DragApi is used
- Containers that accept input will require an ID to function

include/pd/ui7/layout.hpp

@@ -0,0 +1,119 @@
+#pragma once
+
+/*
+MIT License
+Copyright (c) 2024 - 2025 René Amthor (tobid7)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+
+#include <pd/core/common.hpp>
+#include <pd/ui7/container/container.hpp>
+#include <pd/ui7/drawlist.hpp>
+#include <pd/ui7/flags.hpp>
+#include <pd/ui7/io.hpp>
+
+namespace PD {
+namespace UI7 {
+class Layout : public PD::SmartCtor<Layout> {
+ public:
+  Layout(const ID& id, IO::Ref io) : ID(id) {
+    this->IO = io;
+    DrawList = UI7::DrawList::New(io->Ren);
+    Scrolling[0] = false;
+    Scrolling[1] = false;
+    CursorInit();
+    Pos = vec2(0, 0);
+    Size = vec2(320, 240);
+    WorkRect = vec4(IO->MenuPadding, Size - (vec2(2) * IO->MenuPadding));
+  }
+  ~Layout() = default;
+
+  const std::string& GetName() const { return ID.GetName(); }
+  const UI7::ID& GetID() const { return this->ID; }
+
+  const vec2& GetPosition() const { return Pos; }
+  void SetPosition(const vec2& v) { Pos = v; }
+  const vec2& GetSize() const { return Size; }
+  void SetSize(const vec2& v) { Size = v; }
+
+  UI7::DrawList::Ref GetDrawList() { return DrawList; }
+
+  void CursorInit();
+  void SameLine();
+  void CursorMove(const vec2& size);
+
+  bool ObjectWorkPos(vec2& movpos);
+
+  void AddObject(Container::Ref obj);
+  Container::Ref FindObject(u32 id);
+
+  vec2 AlignPosition(vec2 pos, vec2 size, vec4 area, UI7Align alignment);
+
+  /** Get the Alignment for Current State */
+  UI7Align GetAlignment() {
+    /// if temp alignment is used then return it and
+    /// reset tmpalign
+    if (TempAlign) {
+      auto t = TempAlign;
+      TempAlign = 0;
+      return t;
+    }
+    return Alignment;
+  }
+
+  void SetAlign(UI7Align a) { Alignment = a; }
+  void NextAlign(UI7Align a) { TempAlign = a; }
+
+  void Update();
+
+ private:
+  friend class Menu;
+  friend class Context;
+  // Base Components
+  UI7::ID ID;
+  UI7::IO::Ref IO;
+  UI7::DrawList::Ref DrawList;
+
+  // Positioning
+  vec2 Pos;
+  vec2 Size;
+  UI7Align Alignment = UI7Align_Default;
+  UI7Align TempAlign;
+
+  // Cursor
+  vec2 Cursor;
+  vec2 InitialCursorOffset;
+  vec2 BackupCursor;
+  vec2 SamelineCursor;
+  vec2 BeforeSameLine;
+  vec2 LastObjSize;
+  vec2 MaxPosition;
+  vec4 WorkRect;
+
+  // Scrolling
+  vec2 ScrollOffset;
+  bool Scrolling[2];
+
+  // Objects
+  std::vector<Container::Ref> Objects;
+  std::vector<Container::Ref> IDObjects;
+};
+}  // namespace UI7
+}  // namespace PD