window.h

[詳解]

/*
 * Copyright 2002-2021 oZ/acy (名賀月晃嗣)
 * Redistribution and use in source and binary forms, 
 *     with or without modification, 
 *   are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
#ifndef INCLUDE_GUARD_URANIA_WINDOW_H
#define INCLUDE_GUARD_URANIA_WINDOW_H
 
#include <map>
#include <memory>
#include <utility>
#include "bwin.h"
#include "menu.h"
 
 
namespace urania
{
struct WndMessage;
class WMHandler;
class WindowFactory;
 
} // end of namesace urania
 
 
struct urania::WndMessage
{
  urania::Window* window;
  UINT id;
  WPARAM wparam;
  LPARAM lparam;
};
 
 
class urania::WMHandler : eunomia::Noncopyable<urania::WMHandler>
{
public:
  using CmdHandler = void (*)(Window*);
 
private:
  std::map<int, CmdHandler> cmap_; 
 
public:
  virtual ~WMHandler() = default;
 
  void setCommand(int cmdid, CmdHandler c) { cmap_[cmdid] = c; }
 
  LRESULT operator()(urania::WndMessage* msg);
 
  virtual bool onDestroy() { return false; }
 
  virtual bool onSize(Window* win, int typ, int w, int h) { return false; }
 
  virtual bool onKeyDown(Window* win, int code, int rep, bool prev)
    { return false; }
 
  virtual bool onLButtonDown(
    Window* win, int x, int y, bool ctrl, bool shft, bool lb, bool mb, bool rb)
    { return false; }
 
  virtual bool onMButtonDown(
    Window* win, int x, int y, bool ctrl, bool shft, bool lb, bool mb, bool rb)
    { return false; }
 
  virtual bool onRButtonDown(
    Window* win, int x, int y, bool ctrl, bool shft, bool lb, bool mb, bool rb)
    { return false; }
 
  virtual void onPaint(BasicWindow* win, PaintDevice* pd) {}
 
  virtual void onScroll(Window* win, int id, int pos) {}
 
  virtual void onMouseWheel(Window* w, int delta, int keys, int x, int y) {}
 
  virtual void onDropFiles(
    Window* w, std::vector<std::wstring>& fa, int x, int y)
    {}
 
private:
  void onDropFiles_(urania::Window*, WPARAM wp);
 
  void onScroll_(urania::Window*, UINT msg, WPARAM, LPARAM);
};
 
 
 
 
class urania::Window : public urania::BasicWindow
{
  friend class urania::WindowFactory;
 
public:
  typedef LRESULT (*H_)(urania::Window* pw, UINT msg, WPARAM wp, LPARAM lp);
 
protected:
  std::unique_ptr<urania::WMHandler> msgHandler_; 
  std::shared_ptr<urania::Menu> menu_; 
  bool dad_;  
 
protected:
  Window() noexcept : msgHandler_(), dad_(false) {}
  void init_(HWND hw) override;
  void uninit_() override;
 
public:
  ~Window() { deleting_(); }
 
  std::shared_ptr<urania::Menu> getMenu() const { return menu_; }
  void setMenu(const std::shared_ptr<urania::Menu>& m) { linkMenu_(m); }
  void setMenu(std::shared_ptr<urania::Menu>&& m)
    { linkMenu_(std::move(m)); }
 
protected:
  virtual LRESULT wproc_(UINT msg, WPARAM wp, LPARAM lp) override;
 
  static HMENU getHM_(const std::shared_ptr<urania::Menu>& mn)
    { return mn->hmenu_; }
 
  HMENU linkMenu_(const std::shared_ptr<urania::Menu>& mn)
  {
    menu_ = mn;
    return menu_->giveHM_();
  }
 
  HMENU linkMenu_(std::shared_ptr<urania::Menu>&& mn)
  {
    menu_ = std::move(mn);
    return menu_->giveHM_();
  }
};
 
 
 
 
class urania::WindowFactory
{
public:
  std::wstring title; 
  int x; 
  int y; 
  int w; 
  int h; 
 
  unsigned icon;  
  unsigned cursor;  
  unsigned bkcolor;  
 
  bool drag_and_drop;  
  bool maxbox;  
  bool minbox;  
  bool h_scrollbar;  
  bool v_scrollbar;  
  bool popup;  
  bool border_only;  
  bool resizeable;  
 
public:
  WindowFactory() noexcept
    : x(CW_USEDEFAULT), w(CW_USEDEFAULT),
      icon(DEFAULT_RC), cursor(DEFAULT_RC), bkcolor(BG_WHITE),
      drag_and_drop(false), maxbox(false), minbox(false),
      h_scrollbar(false), v_scrollbar(false), popup(false),
      border_only(false), resizeable(false)
  {}
 
  std::unique_ptr<urania::Window>
  create(std::unique_ptr<urania::WMHandler>&& hnd, int menu =0)
  {
    return factory_(std::move(hnd), menu, nullptr, 0);
  }
 
  std::unique_ptr<urania::Window>
  createAsOwned(
    urania::BasicWindow* owner, 
    std::unique_ptr<urania::WMHandler>&& hnd, 
    int menu =0)
  {
    return factory_(std::move(hnd), menu, owner, 0);
  }
 
  std::unique_ptr<urania::Window>
  createAsChild(
    urania::BasicWindow* parent, int cid, std::unique_ptr<WMHandler>&& hnd)
  {
    return factory_(std::move(hnd), 0, parent, cid);
  }
 
private:
  std::unique_ptr<urania::Window>
  factory_(
    std::unique_ptr<WMHandler>&& hnd, int menu,
    urania::BasicWindow* par, int cid);
};
 
 
 
 
#endif // INCLUDE_GUARD_URANIA_WINDOW_H