623 lines
15 KiB
C++
623 lines
15 KiB
C++
/*
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* A Menubar implementation
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* Nana C++ Library(http://www.nanapro.org)
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* Copyright(C) 2009-2015 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/widgets/menubar.cpp
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*/
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#include <nana/gui/widgets/menubar.hpp>
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#include <stdexcept>
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namespace nana
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{
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class menu_accessor
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{
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public:
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static void popup(menu& m, window wd, int x, int y)
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{
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m._m_popup(wd, x, y, true);
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}
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};
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namespace drawerbase
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{
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namespace menubar
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{
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struct item_type
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{
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item_type(const ::nana::string& text, unsigned long shortkey)
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: text(text), shortkey(shortkey)
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{}
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::nana::string text;
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unsigned long shortkey;
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::nana::menu menu_obj;
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::nana::point pos;
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::nana::size size;
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};
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class trigger::itembase
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{
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public:
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using container = std::vector<item_type*>;
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~itembase()
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{
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for(auto i : cont_)
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delete i;
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}
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void append(const ::nana::string& text, unsigned long shortkey)
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{
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if(shortkey && shortkey < 0x61) shortkey += (0x61 - 0x41);
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cont_.push_back(new item_type(text, shortkey));
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}
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nana::menu* get_menu(std::size_t index) const
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{
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return (index < cont_.size() ? &(cont_[index]->menu_obj) : nullptr);
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}
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const item_type& at(std::size_t index) const
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{
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return *cont_.at(index);
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}
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std::size_t find(unsigned long shortkey) const
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{
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if(shortkey)
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{
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if(shortkey < 0x61) shortkey += (0x61 - 0x41);
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std::size_t index = 0;
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for(auto i : cont_)
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{
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if(i->shortkey == shortkey)
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return index;
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++index;
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}
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}
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return npos;
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}
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const container& cont() const
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{
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return cont_;
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}
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private:
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container cont_;
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};
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//class item_renderer
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item_renderer::item_renderer(window wd, graph_reference graph)
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:handle_(wd), graph_(graph)
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{}
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void item_renderer::background(const nana::point& pos, const nana::size& size, state_t state)
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{
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auto bground = API::fgcolor(handle_);
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::nana::color border, body, corner;
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switch(state)
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{
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case item_renderer::state_highlight:
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border = colors::highlight;
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body.from_rgb(0xC0, 0xDD, 0xFC);
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corner = body.blend(bground, 0.5);
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break;
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case item_renderer::state_selected:
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border = colors::dark_border;
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body = colors::white;
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corner = body.blend(bground, 0.5);
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break;
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default: //Don't process other states.
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return;
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}
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nana::rectangle r(pos, size);
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graph_.rectangle(r, false, border);
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int right = pos.x + static_cast<int>(size.width) - 1;
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int bottom = pos.y + static_cast<int>(size.height) - 1;
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graph_.set_color(corner);
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graph_.set_pixel(pos.x, pos.y);
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graph_.set_pixel(right, pos.y);
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graph_.set_pixel(pos.x, bottom);
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graph_.set_pixel(right, bottom);
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graph_.rectangle(r.pare_off(1), true, body);
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}
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void item_renderer::caption(int x, int y, const nana::string& text)
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{
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graph_.string({ x, y }, text, colors::black);
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}
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//end class item_renderer
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//class trigger
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trigger::trigger()
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: items_(new itembase)
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{}
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trigger::~trigger()
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{
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delete items_;
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}
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nana::menu* trigger::push_back(const ::nana::string& text)
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{
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::nana::string::value_type shkey;
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API::transform_shortkey_text(text, shkey, nullptr);
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if(shkey)
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API::register_shortkey(widget_->handle(), shkey);
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auto i = items_->cont().size();
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items_->append(text, shkey);
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_m_draw();
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API::update_window(*widget_);
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return items_->get_menu(i);
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}
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nana::menu* trigger::at(std::size_t index) const
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{
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return items_->get_menu(index);
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}
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std::size_t trigger::size() const
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{
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return items_->cont().size();
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}
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void trigger::attached(widget_reference widget, graph_reference graph)
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{
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graph_ = &graph;
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widget_ = &widget;
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}
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void trigger::refresh(graph_reference)
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{
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_m_draw();
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API::lazy_refresh();
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}
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void trigger::mouse_move(graph_reference, const arg_mouse& arg)
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{
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if (arg.pos != state_.mouse_pos)
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state_.nullify_mouse = false;
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bool popup = false;
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if(state_.behavior == state_type::behavior_focus)
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{
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std::size_t index = _m_item_by_pos(arg.pos);
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if(index != npos && state_.active != index)
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{
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state_.active = index;
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popup = true;
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}
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}
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else
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popup = _m_track_mouse(arg.pos);
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if(popup)
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{
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_m_popup_menu();
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_m_draw();
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API::lazy_refresh();
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}
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state_.mouse_pos = arg.pos;
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}
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void trigger::mouse_leave(graph_reference graph, const arg_mouse& arg)
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{
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state_.nullify_mouse = false;
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mouse_move(graph, arg);
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}
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void trigger::mouse_down(graph_reference graph, const arg_mouse& arg)
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{
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state_.nullify_mouse = false;
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state_.active = _m_item_by_pos(arg.pos);
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if(state_.menu_active == false)
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{
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if(state_.active != npos)
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{
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state_.menu_active = true;
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_m_popup_menu();
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}
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else
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_m_total_close();
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}
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else if(npos == state_.active)
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_m_total_close();
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else
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_m_popup_menu();
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_m_draw();
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API::lazy_refresh();
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}
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void trigger::mouse_up(graph_reference graph, const arg_mouse&)
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{
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state_.nullify_mouse = false;
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if(state_.behavior != state_.behavior_menu)
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{
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if(state_.menu_active)
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state_.behavior = state_.behavior_menu;
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}
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else
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{
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state_.behavior = state_.behavior_none;
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_m_total_close();
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_m_draw();
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API::lazy_refresh();
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}
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}
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void trigger::focus(graph_reference, const arg_focus& arg)
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{
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if((arg.getting == false) && (state_.active != npos))
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{
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state_.behavior = state_type::behavior_none;
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state_.nullify_mouse = true;
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state_.menu_active = false;
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_m_close_menu();
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state_.active = npos;
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_m_draw();
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API::lazy_refresh();
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}
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}
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void trigger::key_press(graph_reference, const arg_keyboard& arg)
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{
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state_.nullify_mouse = true;
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if(state_.menu)
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{
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switch(arg.key)
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{
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case keyboard::os_arrow_down:
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state_.menu->goto_next(true); break;
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case keyboard::backspace:
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case keyboard::os_arrow_up:
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state_.menu->goto_next(false); break;
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case keyboard::os_arrow_right:
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if(state_.menu->goto_submen() == false)
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_m_move(false);
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break;
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case keyboard::os_arrow_left:
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if(state_.menu->exit_submenu() == false)
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_m_move(true);
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break;
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case keyboard::escape:
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if(state_.menu->exit_submenu() == false)
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{
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_m_close_menu();
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state_.behavior = state_.behavior_focus;
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state_.menu_active = false;
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}
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break;
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case keyboard::enter:
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state_.menu->pick();
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break;
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default:
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if(2 != state_.menu->send_shortkey(arg.key))
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{
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if(state_.active != npos)
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{
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_m_total_close();
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if(arg.key == 18) //ALT
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state_.behavior = state_.behavior_focus;
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}
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}
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else
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state_.menu->goto_submen();
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}
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}
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else
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{
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switch(arg.key)
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{
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case keyboard::os_arrow_right:
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_m_move(false);
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break;
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case keyboard::backspace:
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case keyboard::os_arrow_left:
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_m_move(true);
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break;
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case keyboard::escape:
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if(state_.behavior == state_.behavior_focus)
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{
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state_.active= npos;
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state_.behavior = state_.behavior_none;
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API::restore_menubar_taken_window();
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}
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}
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}
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_m_draw();
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API::lazy_refresh();
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}
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void trigger::key_release(graph_reference, const arg_keyboard& arg)
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{
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if(arg.key == 18)
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{
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if(state_.behavior == state_type::behavior_none)
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{
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state_.behavior = state_type::behavior_focus;
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state_.active = 0;
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}
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else
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{
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state_.behavior = state_type::behavior_none;
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nana::point pos = API::cursor_position();
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API::calc_window_point(widget_->handle(), pos);
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state_.active = _m_item_by_pos(pos);
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}
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state_.menu_active = false;
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_m_draw();
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API::lazy_refresh();
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}
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}
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void trigger::shortkey(graph_reference graph, const arg_keyboard& arg)
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{
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API::focus_window(widget_->handle());
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std::size_t index = items_->find(arg.key);
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if(index != npos && (index != state_.active || nullptr == state_.menu))
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{
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_m_close_menu();
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state_.menu_active = true;
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state_.nullify_mouse = true;
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state_.active = index;
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if(_m_popup_menu())
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state_.menu->goto_next(true);
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_m_draw();
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API::lazy_refresh();
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state_.behavior = state_.behavior_menu;
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}
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}
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void trigger::_m_move(bool to_left)
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{
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if(items_->cont().empty()) return;
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const std::size_t last_pos = items_->cont().size() - 1;
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std::size_t index = state_.active;
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if(to_left)
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{
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--index;
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if (index > last_pos)
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index = last_pos;
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}
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else
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{
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++index;
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if(index > last_pos)
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index = 0;
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}
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if(index != state_.active)
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{
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state_.active = index;
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_m_draw();
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API::lazy_refresh();
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if(_m_popup_menu())
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state_.menu->goto_next(true);
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}
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}
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bool trigger::_m_popup_menu()
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{
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if(state_.menu_active && (state_.menu != items_->get_menu(state_.active)))
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{
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std::size_t index = state_.active;
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_m_close_menu();
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state_.active = index;
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state_.menu = items_->get_menu(state_.active);
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if(state_.menu)
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{
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const item_type &m = items_->at(state_.active);
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state_.menu->destroy_answer(std::bind(&trigger::_m_unload_menu_window, this));
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menu_accessor::popup(*state_.menu, widget_->handle(), m.pos.x, m.pos.y + m.size.height);
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return true;
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}
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}
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return false;
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}
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void trigger::_m_total_close()
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{
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_m_close_menu();
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state_.menu_active = false;
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state_.behavior = state_.behavior_none;
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API::restore_menubar_taken_window();
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auto pos = API::cursor_position();
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API::calc_window_point(widget_->handle(), pos);
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state_.active = _m_item_by_pos(pos);
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}
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bool trigger::_m_close_menu()
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{
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if(state_.menu)
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{
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state_.passive_close = false;
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state_.menu->close();
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state_.passive_close = true;
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state_.menu = nullptr;
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return true;
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}
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return false;
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}
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void trigger::_m_unload_menu_window()
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{
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state_.menu = nullptr;
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if(state_.passive_close)
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{
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_m_total_close();
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_m_draw();
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API::update_window(widget_->handle());
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}
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}
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std::size_t trigger::_m_item_by_pos(const ::nana::point& pos)
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{
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if((2 <= pos.x) && (2 <= pos.y) && (pos.y < 25))
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{
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int item_x = 2;
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std::size_t index = 0;
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for(auto i : items_->cont())
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{
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if(item_x <= pos.x && pos.x < item_x + static_cast<int>(i->size.width))
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return index;
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item_x += i->size.width;
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++index;
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}
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}
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return npos;
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}
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bool trigger::_m_track_mouse(const ::nana::point& pos)
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{
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if(state_.nullify_mouse == false)
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{
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std::size_t which = _m_item_by_pos(pos);
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if((which != state_.active) && (which != npos || (false == state_.menu_active)))
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{
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state_.active = which;
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return true;
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}
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}
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return false;
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}
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void trigger::_m_draw()
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{
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auto bgcolor = API::bgcolor(*widget_);
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graph_->rectangle(true, bgcolor);
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item_renderer ird(*widget_, *graph_);
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nana::point item_pos(2, 2);
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nana::size item_s(0, 23);
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unsigned long index = 0;
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for(auto i : items_->cont())
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{
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//Transform the text if it contains the hotkey character
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nana::string::value_type hotkey;
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nana::string::size_type hotkey_pos;
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nana::string text = API::transform_shortkey_text(i->text, hotkey, &hotkey_pos);
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nana::size text_s = graph_->text_extent_size(text);
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item_s.width = text_s.width + 16;
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i->pos = item_pos;
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i->size = item_s;
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item_renderer::state_t state = (index != state_.active ? ird.state_normal : (state_.menu_active ? ird.state_selected : ird.state_highlight));
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ird.background(item_pos, item_s, state);
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if(state == ird.state_selected)
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{
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int x = item_pos.x + item_s.width;
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int y1 = item_pos.y + 2, y2 = item_pos.y + item_s.height - 1;
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graph_->line({ x, y1 }, { x, y2 }, bgcolor.blend(colors::gray_border, 0.4));
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graph_->line({ x + 1, y1 }, { x + 1, y2 }, bgcolor.blend(colors::button_face_shadow_end, 0.5));
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}
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//Draw text, the text is transformed from orignal for hotkey character
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int text_top_off = (item_s.height - text_s.height) / 2;
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ird.caption(item_pos.x + 8, item_pos.y + text_top_off, text);
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if(hotkey)
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{
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unsigned off_w = (hotkey_pos ? graph_->text_extent_size(text, static_cast<unsigned>(hotkey_pos)).width : 0);
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nana::size hotkey_size = graph_->text_extent_size(text.c_str() + hotkey_pos, 1);
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unsigned ascent, descent, inleading;
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graph_->text_metrics(ascent, descent, inleading);
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int x = item_pos.x + 8 + off_w;
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int y = item_pos.y + text_top_off + ascent + 1;
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graph_->line({ x, y }, { x + static_cast<int>(hotkey_size.width) - 1, y }, ::nana::colors::black);
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}
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item_pos.x += i->size.width;
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++index;
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}
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}
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|
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//struct state_type
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trigger::state_type::state_type()
|
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:active(npos), behavior(behavior_none), menu_active(false), passive_close(true), nullify_mouse(false), menu(nullptr)
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{}
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//end struct state_type
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|
//end class trigger
|
|
}//end namespace menubar
|
|
}//end namespace drawerbase
|
|
|
|
|
|
//class menubar
|
|
menubar::menubar(window wd)
|
|
{
|
|
create(wd);
|
|
}
|
|
|
|
menubar::~menubar()
|
|
{
|
|
API::umake_event(evt_resized_);
|
|
}
|
|
|
|
void menubar::create(window wd)
|
|
{
|
|
widget_object<category::widget_tag, drawerbase::menubar::trigger>
|
|
::create(wd, rectangle(nana::size(API::window_size(wd).width, 28)));
|
|
API::attach_menubar(handle());
|
|
evt_resized_ = API::events(wd).resized([this](const ::nana::arg_resized& arg)
|
|
{
|
|
auto sz = this->size();
|
|
sz.width = arg.width;
|
|
this->size(sz);
|
|
});
|
|
}
|
|
|
|
menu& menubar::push_back(const nana::string& text)
|
|
{
|
|
return *(get_drawer_trigger().push_back(text));
|
|
}
|
|
|
|
menu& menubar::at(std::size_t index) const
|
|
{
|
|
menu* p = get_drawer_trigger().at(index);
|
|
if(nullptr == p)
|
|
throw std::out_of_range("menubar::at, out of range");
|
|
return *p;
|
|
}
|
|
|
|
std::size_t menubar::length() const
|
|
{
|
|
return get_drawer_trigger().size();
|
|
}
|
|
//end class menubar
|
|
}//end namespace nana
|