95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
/*
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* A Drawing Implementation
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* Nana C++ Library(http://www.nanapro.org)
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* Copyright(C) 2003-2015 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/drawing.cpp
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*/
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#include <nana/gui/drawing.hpp>
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#include <nana/gui/programming_interface.hpp>
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#include <nana/gui/detail/basic_window.hpp>
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namespace nana
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{
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//restrict
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//@brief: This name is only visible for this compiling-unit
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namespace restrict
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{
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namespace
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{
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using core_window_t = detail::basic_window;
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inline detail::drawer& get_drawer(window wd)
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{
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return reinterpret_cast<core_window_t*>(wd)->drawer;
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}
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}
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}
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//class drawing
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drawing::drawing(window wd)
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:handle_(wd)
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{
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if (!API::is_window(wd))
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throw std::invalid_argument("drawing: invalid window parameter");
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if (reinterpret_cast<restrict::core_window_t*>(wd)->is_draw_through())
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throw std::invalid_argument("drawing: the window is draw_through enabled");
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}
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drawing::~drawing(){} //Just for polymorphism
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bool drawing::empty() const
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{
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return API::empty_window(handle_) || reinterpret_cast<restrict::core_window_t*>(handle_)->root_graph->empty();
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}
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void drawing::update() const
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{
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API::refresh_window(handle_);
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}
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void drawing::draw(const draw_fn_t& f)
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{
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if(API::empty_window(handle_)) return;
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restrict::get_drawer(handle_).draw(draw_fn_t(f), false);
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}
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void drawing::draw(draw_fn_t&& f)
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{
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if(API::empty_window(handle_)) return;
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restrict::get_drawer(handle_).draw(std::move(f), false);
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}
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drawing::diehard_t drawing::draw_diehard(const draw_fn_t& f)
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{
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if(API::empty_window(handle_)) return nullptr;
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return reinterpret_cast<diehard_t>(restrict::get_drawer(handle_).draw(draw_fn_t(f), true));
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}
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drawing::diehard_t drawing::draw_diehard(draw_fn_t&& f)
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{
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if(API::empty_window(handle_)) return nullptr;
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return reinterpret_cast<diehard_t>(restrict::get_drawer(handle_).draw(std::move(f), true));
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}
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void drawing::erase(diehard_t d)
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{
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if(API::empty_window(handle_))
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restrict::get_drawer(handle_).erase(d);
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}
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void drawing::clear()
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{
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if(API::empty_window(handle_)) return;
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restrict::get_drawer(handle_).clear();
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}
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//end class drawing
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}//end namespace nana
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