84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
/**
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* A Label Control 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/widgets/label.hpp
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*/
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#ifndef NANA_GUI_WIDGET_LABEL_HPP
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#define NANA_GUI_WIDGET_LABEL_HPP
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#include "widget.hpp"
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namespace nana
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{
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namespace drawerbase
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{
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namespace label
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{
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enum class command /// Defines the event type for format listener.
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{
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enter, leave, click
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};
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/// draw the label
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class trigger: public drawer_trigger
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{
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public:
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struct impl_t;
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trigger();
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~trigger();
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impl_t * impl() const;
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private:
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void attached(widget_reference, graph_reference) override;
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void refresh(graph_reference) override;
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void mouse_move(graph_reference, const arg_mouse&) override;
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void mouse_leave(graph_reference, const arg_mouse&) override;
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void click(graph_reference, const arg_click&) override;
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private:
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impl_t * impl_;
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};
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}//end namespace label
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}//end namespace drawerbase
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class label
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: public widget_object<category::widget_tag, drawerbase::label::trigger>
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{
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label(const label&) = delete;
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label(label&&) = delete;
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public:
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typedef drawerbase::label::command command;
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label();
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label(window, bool visible);
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label(window, const std::string& text, bool visible = true);
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label(window parent, const char* text, bool visible = true) :label(parent, std::string(text),visible) {};
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label(window, const rectangle& = {}, bool visible = true);
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label& transparent(bool); ///< Switchs the label widget to the transparent background mode.
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bool transparent() const throw();
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label& format(bool); ///< Switches the format mode of the widget.
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label& add_format_listener(std::function<void(command, const std::string&)>);
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/// as same as the HTML "for" attribute of a label
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label& click_for(window associated_window) throw();
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/// Returns the size of the text. If *allowed_width_in_pixel* is not zero, returns a
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/// "corrected" size that changes lines to fit the text into the specified width
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nana::size measure(unsigned allowed_width_in_pixel) const;
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static ::nana::size measure(::nana::paint::graphics&, const ::std::string&, unsigned allowed_width_in_pixel, bool format_enabled, align h_align, align_v v_align);
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label& text_align(align horizontal_align, align_v vertical_align= align_v::top);
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private:
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//Overrides widget's virtual function
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void _m_caption(native_string_type&&) override;
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};
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}//end namespace nana
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#endif
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