nana/include/nana/gui/detail/drawer.hpp

203 lines
6.2 KiB
C++

/*
* A Drawer Implementation
* Nana C++ Library(http://www.nanapro.org)
* Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
*
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*
* @file: nana/gui/detail/drawer.hpp
*/
#ifndef NANA_GUI_DETAIL_DRAWER_HPP
#define NANA_GUI_DETAIL_DRAWER_HPP
#include <nana/push_ignore_diagnostic>
#include "general_events.hpp"
#include <nana/paint/graphics.hpp>
#include <functional>
#include <vector>
namespace nana
{
class widget;
namespace detail
{
class drawer;
}
class drawer_trigger;
class event_filter_status
{
public:
event_filter_status();
event_filter_status(const event_filter_status& rOther);
event_filter_status(const unsigned evt_disabled_);
const event_filter_status& operator=(const event_filter_status& rOther);
const event_filter_status& operator=(const unsigned evt_disabled_);
bool operator[](const nana::event_code evt_code) const;
bool operator==(const event_filter_status& rOther) const;
bool operator!=(const event_filter_status& rOther) const;
private:
unsigned evt_disabled_;
friend class drawer_trigger;
};
class drawer_trigger
{
friend class detail::drawer;
//Noncopyable
drawer_trigger(const drawer_trigger&) = delete;
drawer_trigger& operator=(const drawer_trigger&) = delete;
//Nonmovable
drawer_trigger(drawer_trigger&&) = delete;
drawer_trigger& operator=(drawer_trigger&&) = delete;
public:
using widget_reference = widget&;
using graph_reference = paint::graphics&;
drawer_trigger() = default;
virtual ~drawer_trigger() = default;
virtual void attached(widget_reference, graph_reference); //none-const
virtual void detached(); //none-const
virtual void typeface_changed(graph_reference);
virtual void refresh(graph_reference);
virtual void resizing(graph_reference, const arg_resizing&);
virtual void resized(graph_reference, const arg_resized&);
virtual void move(graph_reference, const arg_move&);
virtual void click(graph_reference, const arg_click&);
virtual void dbl_click(graph_reference, const arg_mouse&);
virtual void mouse_enter(graph_reference, const arg_mouse&);
virtual void mouse_move(graph_reference, const arg_mouse&);
virtual void mouse_leave(graph_reference, const arg_mouse&);
virtual void mouse_down(graph_reference, const arg_mouse&);
virtual void mouse_up(graph_reference, const arg_mouse&);
virtual void mouse_wheel(graph_reference, const arg_wheel&);
virtual void mouse_dropfiles(graph_reference, const arg_dropfiles&);
virtual void focus(graph_reference, const arg_focus&);
virtual void key_press(graph_reference, const arg_keyboard&);
virtual void key_char(graph_reference, const arg_keyboard&);
virtual void key_release(graph_reference, const arg_keyboard&);
virtual void shortkey(graph_reference, const arg_keyboard&);
void filter_event(const event_code evt_code, const bool bDisabled);
void filter_event(const std::vector<event_code>& evt_codes, const bool bDisabled);
void filter_event(const event_filter_status& evt_all_states);
bool filter_event(const event_code evt_code);
event_filter_status filter_event();
void clear_filter();
private:
void _m_reset_overridden();
bool _m_overridden(event_code) const;
private:
unsigned overridden_{ 0xFFFFFFFF };
unsigned evt_disabled_{ 0 }; // bit set if event is filtered
};
namespace detail
{
struct basic_window;
//@brief: Every window has a drawer, the drawer holds a drawer_trigger for
// a widget.
class drawer
: nana::noncopyable, nana::nonmovable
{
enum class method_state
{
pending,
overridden,
not_overridden
};
public:
drawer();
~drawer();
void bind(basic_window*);
void typeface_changed();
void click(const arg_click&, const bool);
void dbl_click(const arg_mouse&, const bool);
void mouse_enter(const arg_mouse&, const bool);
void mouse_move(const arg_mouse&, const bool);
void mouse_leave(const arg_mouse&, const bool);
void mouse_down(const arg_mouse&, const bool);
void mouse_up(const arg_mouse&, const bool);
void mouse_wheel(const arg_wheel&, const bool);
void mouse_dropfiles(const arg_dropfiles&, const bool);
void resizing(const arg_resizing&, const bool);
void resized(const arg_resized&, const bool);
void move(const arg_move&, const bool);
void focus(const arg_focus&, const bool);
void key_press(const arg_keyboard&, const bool);
void key_char(const arg_keyboard&, const bool);
void key_release(const arg_keyboard&, const bool);
void shortkey(const arg_keyboard&, const bool);
void map(window, bool forced, const rectangle* update_area = nullptr); //Copy the root buffer to screen
void refresh();
drawer_trigger* realizer() const;
void attached(widget&, drawer_trigger&);
drawer_trigger* detached();
public:
void clear();
void* draw(std::function<void(paint::graphics&)> &&, bool diehard);
void erase(void* diehard);
private:
void _m_effect_bground_subsequent();
method_state& _m_mth_state(int pos);
template<typename Arg, typename Mfptr>
void _m_emit(event_code evt_code, const Arg& arg, Mfptr mfptr, const bool bForce__EmitInternal)
{
const int pos = static_cast<int>(evt_code);
auto realizer = this->realizer();
auto & mth_state = _m_mth_state(pos);
if (realizer && (method_state::not_overridden != mth_state))
{
const bool bFiltered = !bForce__EmitInternal && realizer->filter_event(evt_code);
if (method_state::pending == mth_state)
{
if (!bFiltered)
(realizer->*mfptr)(graphics, arg);
//Check realizer, when the window is closed in that event handler, the drawer will be
//detached and realizer will be a nullptr
if (realizer)
mth_state = (realizer->_m_overridden(evt_code) ? method_state::overridden : method_state::not_overridden);
}
else
{
if (!bFiltered)
(realizer->*mfptr)(graphics, arg);
}
_m_effect_bground_subsequent();
}
}
public:
nana::paint::graphics graphics;
private:
struct data_implement;
data_implement * const data_impl_;
};
}//end namespace detail
}//end namespace nana
#include <nana/pop_ignore_diagnostic>
#endif