131 lines
3.8 KiB
C++
131 lines
3.8 KiB
C++
/*
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* An Implementation of Place for Layout
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* Nana C++ Library(http://www.nanapro.org)
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* Copyright(C) 2003-2014 Jinhao(cnjinhao@hotmail.com)
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*
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* @file: nana/gui/place.cpp
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*
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* @contributions:
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* min/max and splitter bar initial weight by Ariel Vina-Rodriguez.
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*/
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#ifndef NANA_GUI_PLACE_HPP
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#define NANA_GUI_PLACE_HPP
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#include <nana/gui/basis.hpp>
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#include <utility>
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#include <memory>
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#include <functional>
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namespace nana
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{
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class widget;
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namespace detail
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{
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class place_agent
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{
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public:
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virtual ~place_agent() = default;
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virtual std::unique_ptr<nana::widget> create(nana::window) const = 0;
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};
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}
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template<typename Widget>
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class agent
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: public detail::place_agent
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{
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public:
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agent(std::function<void(Widget&)> initializer)
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: init_(std::move(initializer))
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{}
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agent(const nana::char_t* text)
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: text_(text)
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{}
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agent(nana::string text, std::function<void(Widget&)> initializer = {})
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: text_(std::move(text)), init_(std::move(initializer))
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{}
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private:
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std::unique_ptr<nana::widget> create(nana::window handle) const override
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{
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std::unique_ptr<Widget> ptr(new Widget(handle));
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ptr->caption(text_);
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if (init_)
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init_(*ptr);
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return std::move(ptr);
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}
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private:
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nana::string text_;
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std::function<void(Widget&)> init_;
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};
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/// Layout managment - an object of class place is attached to a widget, and it automatically positions and resizes the children widgets.
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class place
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: ::nana::noncopyable
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{
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struct implement;
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class field_interface
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{
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field_interface(const field_interface&) = delete;
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field_interface& operator=(const field_interface&) = delete;
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field_interface(field_interface&&) = delete;
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field_interface& operator=(field_interface&&) = delete;
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public:
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field_interface() = default;
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virtual ~field_interface() = default;
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virtual field_interface& operator<<(const nana::char_t* label) = 0;
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virtual field_interface& operator<<(nana::string label) = 0;
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virtual field_interface& operator<<(window) = 0;
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virtual field_interface& fasten(window) = 0;
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template<typename Widget>
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field_interface& operator<<(const agent<Widget>& ag)
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{
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_m_add_agent(ag);
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return *this;
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}
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private:
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virtual void _m_add_agent(const detail::place_agent&) = 0;
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};
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public:
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/// reference to a field manipulator which refers to a field object created by place
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typedef field_interface & field_reference;
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place();
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place(window);///< Attaches to a specified widget.
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~place();
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/** @brief Bind to a window
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* @param handle A handle to a window which the place wants to attach.
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* @remark It will throw an exception if the place has already binded to a window.
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*/
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void bind(window handle);
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window window_handle() const;
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void div(const char* s); ///< Divides the attached widget into fields.
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field_reference field(const char* name);///< Returns a field with the specified name.
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void field_visible(const char* filed_name, bool visible); ///<<Shows/Hides an existing field.
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bool field_visible(const char* field_name) const; ///<Determines whether the specified field is visible.
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void field_display(const char* field_name, bool display); ///<Displays/Discards an existing field.
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bool field_display(const char* field_name) const; ///<Determines whether the specified field is displayed.
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void collocate(); ///< Layouts the widgets.
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void erase(window handle); ///< Erases a window from field.
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field_reference operator[](const char* name); ///< Returns a field with the specified name. Equal to field();
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private:
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implement * impl_;
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};
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}//end namespace nana
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#endif //#ifndef NANA_GUI_PLACE_HPP
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