781 lines
17 KiB
C++
781 lines
17 KiB
C++
/**
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* Parts of Class Place
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* Nana C++ Library(http://www.nanapro.org)
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* Copyright(C) 2003-2019 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 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_parts.hpp
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*/
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#ifndef NANA_GUI_PLACE_PARTS_HPP
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#define NANA_GUI_PLACE_PARTS_HPP
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#include <nana/gui/widgets/form.hpp>
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#include <nana/gui/widgets/tabbar.hpp>
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#include <nana/gui/element.hpp>
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#include <nana/paint/text_renderer.hpp>
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#include <stdexcept>
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#include <deque>
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namespace nana
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{
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namespace place_parts
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{
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class splitter_interface
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{
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public:
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virtual ~splitter_interface(){}
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};
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class drawer_splitter
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: public drawer_trigger
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{
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public:
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void set_renderer(const std::function<void(window, paint::graphics&, mouse_action)>& rd)
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{
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renderer_ = rd;
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}
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private:
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void attached(widget_reference wdg, graph_reference) override
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{
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window_handle_ = wdg;
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}
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void refresh(graph_reference graph) override
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{
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API::dev::copy_transparent_background(window_handle_, graph);
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if (renderer_)
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renderer_(window_handle_, graph, API::mouse_action(window_handle_));
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}
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void mouse_enter(graph_reference graph, const arg_mouse&) override
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{
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refresh(graph);
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API::dev::lazy_refresh();
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}
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void mouse_move(graph_reference graph, const arg_mouse&) override
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{
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refresh(graph);
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API::dev::lazy_refresh();
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}
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void mouse_leave(graph_reference graph, const arg_mouse&) override
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{
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refresh(graph);
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API::dev::lazy_refresh();
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}
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void mouse_down(graph_reference graph, const arg_mouse&) override
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{
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refresh(graph);
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API::dev::lazy_refresh();
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}
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void mouse_up(graph_reference graph, const arg_mouse&) override
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{
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refresh(graph);
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API::dev::lazy_refresh();
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}
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private:
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window window_handle_{nullptr};
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std::function<void(window, paint::graphics&, mouse_action)> renderer_;
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};
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class splitter
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: public widget_object<category::widget_tag, drawer_splitter>,
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public splitter_interface
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{
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public:
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void set_renderer(const std::function<void(window, paint::graphics&, mouse_action)>& rd)
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{
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get_drawer_trigger().set_renderer(rd);
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}
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private:
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void _m_complete_creation() override
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{
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this->caption("place-splitter");
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widget_object<category::widget_tag, drawer_splitter>::_m_complete_creation();
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API::effects_bground(*this, effects::bground_transparent(0), 0);
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}
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};
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class dock_notifier_interface
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{
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public:
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virtual ~dock_notifier_interface() = default;
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virtual void notify_float() = 0;
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virtual void notify_dock() = 0;
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virtual void notify_move() = 0;
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virtual void notify_move_stopped() = 0;
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//a dockarea requests to close the dockpane
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virtual void request_close() = 0;
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};
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class dockcaption_dtrigger
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: public drawer_trigger
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{
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public:
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void on_close(std::function<void()>&& fn)
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{
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close_fn_ = std::move(fn);
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}
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private:
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virtual void attached(widget_reference wdg, graph_reference graph) override
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{
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window_handle_ = wdg;
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text_rd_.reset(new paint::text_renderer(graph));
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}
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void refresh(graph_reference& graph) override
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{
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graph.palette(true, colors::white);
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graph.rectangle(true, static_cast<color_rgb>(0x83EB));
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//draw caption
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auto text = to_wstring(API::window_caption(window_handle_));
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text_rd_->render({ 3, 1 }, text.data(), text.size(), graph.size().width - 20, true);
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//draw x button
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auto r = _m_button_area();
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if (x_pointed_)
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{
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color xclr = colors::red;
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if(x_state_ == ::nana::mouse_action::pressed)
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xclr = xclr.blend(colors::white, 0.2);
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graph.rectangle(r, true, xclr);
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}
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r.x += (r.width - 16) / 2;
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r.y = (r.height - 16) / 2;
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x_icon_.draw(graph, colors::red, colors::white, r, element_state::normal);
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}
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void mouse_move(graph_reference graph, const arg_mouse& arg) override
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{
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x_pointed_ = _m_button_area().is_hit(arg.pos);
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refresh(graph);
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API::dev::lazy_refresh();
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}
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void mouse_leave(graph_reference graph, const arg_mouse&) override
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{
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x_pointed_ = false;
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refresh(graph);
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API::dev::lazy_refresh();
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}
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void mouse_down(graph_reference graph, const arg_mouse&) override
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{
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if (!x_pointed_)
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return;
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x_state_ = ::nana::mouse_action::pressed;
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refresh(graph);
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API::dev::lazy_refresh();
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}
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void mouse_up(graph_reference graph, const arg_mouse&) override
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{
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if (!x_pointed_)
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return;
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x_state_ = ::nana::mouse_action::hovered;
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refresh(graph);
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API::dev::lazy_refresh();
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close_fn_();
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}
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private:
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::nana::rectangle _m_button_area() const
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{
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auto sz = API::window_size(window_handle_);
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return{static_cast<int>(sz.width) - 20, 0, 20, sz.height};
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}
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public:
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window window_handle_;
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std::unique_ptr<paint::text_renderer> text_rd_;
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bool x_pointed_{ false };
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::nana::mouse_action x_state_{ ::nana::mouse_action::normal };
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facade<element::x_icon> x_icon_;
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std::function<void()> close_fn_;
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};
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class dockarea_caption
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: public widget_object<category::widget_tag, dockcaption_dtrigger>
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{
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public:
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using widget_object<category::widget_tag, dockcaption_dtrigger>::get_drawer_trigger;
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};
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static unsigned differ(unsigned x, unsigned y) noexcept
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{
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return (x > y ? x - y : 0);
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}
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class dockarea
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: public widget_object <category::lite_widget_tag, drawer_trigger>
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{
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using base_type = widget_object<category::lite_widget_tag, drawer_trigger>;
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using factory = std::function<std::unique_ptr<widget>(window)>;
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struct panel
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{
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std::unique_ptr<widget> widget_ptr;
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};
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public:
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void set_notifier(place_parts::dock_notifier_interface* notifier)
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{
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notifier_ = notifier;
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}
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void create(window parent)
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{
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host_window_ = parent;
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base_type::create(parent, true);
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this->caption("dockarea");
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caption_.create(*this, true);
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caption_.get_drawer_trigger().on_close([this]
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{
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if (tabbar_)
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{
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tabbar_->erase(tabbar_->selected());
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if (tabbar_->length())
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return;
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}
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notifier_->request_close();
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});
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this->events().resized.connect_unignorable([this](const arg_resized& arg)
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{
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rectangle r{ 0, 0, arg.width, 20 };
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caption_.move(r);
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if (arg.height > 20)
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{
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r.y = 20;
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if (tabbar_)
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{
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tabbar_->move({ 0, int(arg.height) - 20, arg.width, 20 });
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r.height = arg.height - 40;
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}
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else
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r.height = arg.height - 20;
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}
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for (auto & pn : panels_)
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{
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if (pn.widget_ptr)
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pn.widget_ptr->move(r);
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}
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});
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auto grab_fn = [this](const arg_mouse& arg)
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{
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if (event_code::mouse_down == arg.evt_code)
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{
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if (::nana::mouse::left_button == arg.button)
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{
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moves_.started = true;
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moves_.start_pos = API::cursor_position();
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moves_.start_container_pos = (floating() ? container_->pos() : this->pos());
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caption_.set_capture(true);
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}
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}
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else if (event_code::mouse_move == arg.evt_code)
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{
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if (arg.left_button && moves_.started)
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{
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auto move_pos = API::cursor_position() - moves_.start_pos;
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if (!floating())
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{
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if (std::abs(move_pos.x) > 4 || std::abs(move_pos.y) > 4)
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float_away(move_pos);
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}
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else
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{
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move_pos += moves_.start_container_pos;
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API::move_window(container_->handle(), move_pos);
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notifier_->notify_move();
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}
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}
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}
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else if (event_code::mouse_up == arg.evt_code)
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{
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if ((::nana::mouse::left_button == arg.button) && moves_.started)
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{
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moves_.started = false;
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caption_.release_capture();
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notifier_->notify_move_stopped();
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}
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}
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};
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caption_.events().mouse_down.connect(grab_fn);
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caption_.events().mouse_move.connect(grab_fn);
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caption_.events().mouse_up.connect(grab_fn);
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}
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widget* add_pane(factory & fn)
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{
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auto fn_ptr = &fn;
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widget * w = nullptr;
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API::dev::affinity_execute(*this, [this, fn_ptr, &w]
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{
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w=_m_add_pane(*fn_ptr);
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});
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return w;
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}
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void float_away(const ::nana::point& move_pos)
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{
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if (container_)
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return;
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caption_.release_capture();
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rectangle r{ pos() + move_pos, size() };
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container_.reset(new form(host_window_, r.pare_off(-1), form::appear::bald<form::appear::sizable>()));
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drawing dw(container_->handle());
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dw.draw([](paint::graphics& graph)
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{
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graph.rectangle(false, colors::coral);
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});
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API::set_parent_window(handle(), container_->handle());
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this->move({ 1, 1 });
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container_->events().resized.connect_unignorable([this](const arg_resized& arg)
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{
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this->size({arg.width - 2, arg.height - 2});
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});
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container_->show();
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caption_.set_capture(true);
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notifier_->notify_float();
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}
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void dock()
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{
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caption_.release_capture();
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API::set_parent_window(handle(), host_window_);
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container_.reset();
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notifier_->notify_dock();
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}
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bool floating() const
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{
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return (nullptr != container_);
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}
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private:
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widget* _m_add_pane(factory & fn)
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{
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rectangle r{ this->size() };
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//get a rectangle excluding caption
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r.y = 20;
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r.height = differ(r.height, 20);
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if (!tabbar_)
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{
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if (panels_.size() > 0)
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{
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tabbar_.reset(new tabbar_lite(*this));
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tabbar_->events().selected.clear();
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tabbar_->events().selected.connect([this](const event_arg&)
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{
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auto handle = tabbar_->attach(tabbar_->selected());
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//Set caption through a caption of window specified by handle
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//Empty if handle is null
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caption_.caption(API::window_caption(handle));
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});
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r.height -= 20;
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tabbar_->move({ 0, r.bottom(), r.width, 20 });
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std::size_t pos = 0;
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for (auto & pn : panels_)
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{
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tabbar_->push_back(pn.widget_ptr->caption());
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tabbar_->attach(pos++, *pn.widget_ptr);
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}
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}
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}
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else
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r.height -= 20;
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auto wdg = fn(*this);
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if (wdg)
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{
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if (tabbar_)
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{
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tabbar_->push_back(::nana::charset(wdg->caption()));
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tabbar_->attach(panels_.size(), wdg->handle());
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}
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if (panels_.empty())
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{
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caption_.caption(wdg->caption());
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}
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auto wdg_ptr = wdg.get();
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#ifdef _nana_std_has_emplace_return_type
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panels_.emplace_back().widget_ptr = std::move(wdg);
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#else
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panels_.emplace_back();
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panels_.back().widget_ptr.swap(wdg);
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#endif
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for (auto & pn : panels_)
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{
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if (pn.widget_ptr)
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pn.widget_ptr->move(r);
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}
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return wdg_ptr;
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}
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return nullptr;
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}
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private:
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window host_window_{nullptr};
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place_parts::dock_notifier_interface* notifier_{ nullptr };
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std::unique_ptr<form> container_;
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dockarea_caption caption_;
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std::deque<panel> panels_;
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std::unique_ptr<tabbar_lite> tabbar_;
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struct moves
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{
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bool started{ false };
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::nana::point start_pos;
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::nana::point start_container_pos;
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}moves_;
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};//class dockarea
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//number_t is used for storing a number type variable
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//such as integer, real and percent. Essentially, percent is a typo of real.
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class number_t
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{
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public:
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enum class kind{ none, integer, real, percent };
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number_t()
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: kind_(kind::none)
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{
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value_.integer = 0;
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}
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void reset() noexcept
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{
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kind_ = kind::none;
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value_.integer = 0;
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}
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bool is_negative() const
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{
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return (((kind::integer == kind_) && (value_.integer < 0)) ||
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((kind::real == kind_ || kind::percent == kind_) && (value_.real < 0)));
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}
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bool empty() const noexcept
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{
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return (kind::none == kind_);
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}
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kind kind_of() const noexcept
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{
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return kind_;
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}
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double get_value(int ref_percent) const noexcept
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{
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switch (kind_)
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{
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case kind::integer:
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return value_.integer;
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case kind::real:
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return value_.real;
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case kind::percent:
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return value_.real * ref_percent;
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default:
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break;
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}
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return 0;
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}
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int integer() const noexcept
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{
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if (kind::integer == kind_)
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return value_.integer;
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return static_cast<int>(value_.real);
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}
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double real() const noexcept
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{
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if (kind::integer == kind_)
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return value_.integer;
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return value_.real;
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}
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void assign(int i) noexcept
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{
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kind_ = kind::integer;
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value_.integer = i;
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}
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void assign(double d) noexcept
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{
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kind_ = kind::real;
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value_.real = d;
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}
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void assign_percent(double d) noexcept
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{
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kind_ = kind::percent;
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value_.real = d / 100;
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}
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private:
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kind kind_;
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union valueset
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{
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int integer;
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double real;
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}value_;
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};//end class number_t
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/// Margin attribute
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/**
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* Definition at https://github.com/cnjinhao/nana/wiki/Div-Text#margin
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*/
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class margin
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{
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public:
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margin& operator=(margin&& rhs)
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{
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if (this != &rhs)
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{
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all_edges_ = rhs.all_edges_;
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margins_ = std::move(rhs.margins_);
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}
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return *this;
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}
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void clear()
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{
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all_edges_ = true;
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margins_.clear();
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}
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void push(const number_t& v, bool reset = false)
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{
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if (reset)
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clear();
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margins_.emplace_back(v);
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}
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void set_array(const std::vector<number_t>& v)
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{
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all_edges_ = false;
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margins_ = v;
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|
}
|
|
|
|
number_t get_edge(std::size_t edge) const
|
|
{
|
|
int il{ -1 }, ir{ -1 }, it{ -1 }, ib{ -1 }; //index of four corners in margin
|
|
switch (margins_.size())
|
|
{
|
|
case 0: break;
|
|
case 1: //top
|
|
it = 0;
|
|
break;
|
|
case 2://top,bottom and left,right
|
|
it = ib = 0;
|
|
il = ir = 1;
|
|
break;
|
|
case 3: //top, right, bottom
|
|
it = 0;
|
|
ir = 1;
|
|
ib = 2;
|
|
break;
|
|
default: //left, top, right, bottom, left
|
|
it = 0;
|
|
ir = 1;
|
|
ib = 2;
|
|
il = 3;
|
|
}
|
|
|
|
int pos = 0;
|
|
switch (edge)
|
|
{
|
|
case 0: //top
|
|
pos = it; break;
|
|
case 1: //right
|
|
pos = ir; break;
|
|
case 2: //bottom
|
|
pos = ib; break;
|
|
case 3: //left
|
|
pos = il; break;
|
|
default:
|
|
return {};
|
|
}
|
|
|
|
return (-1 == pos ? number_t{} : margins_[pos]);
|
|
}
|
|
|
|
nana::rectangle area(const ::nana::rectangle& field_area) const
|
|
{
|
|
if (margins_.empty())
|
|
return field_area;
|
|
|
|
auto r = field_area;
|
|
if (all_edges_)
|
|
{
|
|
auto px = static_cast<int>(margins_.back().get_value(static_cast<int>(r.width)));
|
|
r.x += px;
|
|
r.width = differ(r.width, (static_cast<unsigned>(px) << 1));
|
|
|
|
r.y += px;
|
|
r.height = differ(r.height, (static_cast<unsigned>(px) << 1));
|
|
}
|
|
else
|
|
{
|
|
int il{ -1 }, ir{ -1 }, it{ -1 }, ib{ -1 }; //index of four corners in margin
|
|
switch (margins_.size())
|
|
{
|
|
case 0: break;
|
|
case 1: //top
|
|
it = 0;
|
|
break;
|
|
case 2://top,bottom and left,right
|
|
it = ib = 0;
|
|
il = ir = 1;
|
|
break;
|
|
case 3: //top, right, bottom
|
|
it = 0;
|
|
ir = 1;
|
|
ib = 2;
|
|
break;
|
|
default: //left, top, right, bottom, left
|
|
it = 0;
|
|
ir = 1;
|
|
ib = 2;
|
|
il = 3;
|
|
}
|
|
|
|
using px_type = decltype(r.height);
|
|
|
|
if (0 == it) //top
|
|
{
|
|
auto px = static_cast<int>(margins_[it].get_value(static_cast<int>(field_area.height)));
|
|
r.y += px;
|
|
r.height = differ(r.height, static_cast<px_type>(px));
|
|
}
|
|
|
|
if (-1 != ib) //bottom
|
|
{
|
|
auto px = static_cast<int>(margins_[ib].get_value(static_cast<int>(field_area.height)));
|
|
r.height = differ(r.height, static_cast<px_type>(px));
|
|
}
|
|
|
|
if (-1 != il) //left
|
|
{
|
|
auto px = static_cast<px_type>(margins_[il].get_value(static_cast<int>(field_area.width)));
|
|
r.x += px;
|
|
r.width = differ(r.width, static_cast<px_type>(px));
|
|
}
|
|
|
|
if (-1 != ir) //right
|
|
{
|
|
auto px = static_cast<int>(margins_[ir].get_value(static_cast<int>(field_area.width)));
|
|
r.width = differ(r.width, static_cast<px_type>(px));
|
|
}
|
|
}
|
|
return r;
|
|
}
|
|
private:
|
|
bool all_edges_{ true };
|
|
std::vector<number_t> margins_;
|
|
};//end class margin
|
|
|
|
class repeated_array
|
|
{
|
|
public:
|
|
//A workaround for VC2013, becuase it does not generated an implicit declared move-constructor as defaulted.
|
|
repeated_array() = default;
|
|
|
|
repeated_array(repeated_array && other)
|
|
: repeated_{ other.repeated_ },
|
|
values_(std::move(other.values_))
|
|
{
|
|
}
|
|
|
|
repeated_array& operator=(repeated_array&& other)
|
|
{
|
|
if (this != &other)
|
|
{
|
|
repeated_ = other.repeated_;
|
|
other.repeated_ = false;
|
|
values_ = std::move(other.values_);
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
void assign(std::vector<number_t>&& c)
|
|
{
|
|
values_ = std::move(c);
|
|
}
|
|
|
|
bool empty() const
|
|
{
|
|
return values_.empty();
|
|
}
|
|
|
|
void reset()
|
|
{
|
|
repeated_ = false;
|
|
values_.clear();
|
|
}
|
|
|
|
void repeated()
|
|
{
|
|
repeated_ = true;
|
|
}
|
|
|
|
void push(const number_t& n)
|
|
{
|
|
values_.emplace_back(n);
|
|
}
|
|
|
|
number_t at(std::size_t pos) const
|
|
{
|
|
if (values_.size() && (repeated_ || pos < values_.size()))
|
|
return values_[pos % values_.size()];
|
|
|
|
return{};
|
|
}
|
|
private:
|
|
bool repeated_ = false;
|
|
std::vector<number_t> values_;
|
|
};
|
|
}//end namespace place_parts
|
|
}//end namespace nana
|
|
|
|
#endif //NANA_GUI_PLACE_PARTS_HPP
|