2846 lines
75 KiB
C++
2846 lines
75 KiB
C++
/*
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* A text editor implementation
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* Nana C++ Library(http://www.nanapro.org)
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* Copyright(C) 2003-2014 Jinhao(cnjinhao@hotmail.com)
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*
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* @file: nana/gui/widgets/skeletons/text_editor.cpp
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* @description:
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*/
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#include <nana/gui/widgets/skeletons/text_editor.hpp>
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#include <nana/gui/widgets/skeletons/textbase_export_interface.hpp>
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#include <nana/system/dataexch.hpp>
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#include <nana/unicode_bidi.hpp>
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#include <numeric>
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namespace nana{ namespace widgets
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{
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namespace skeletons
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{
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template<typename T>
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using undo_command_ptr = std::unique_ptr <undoable_command_interface<T>> ;
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template<typename EnumCommand>
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class text_editor::basic_undoable
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: public undoable_command_interface<EnumCommand>
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{
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public:
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basic_undoable(text_editor& te, EnumCommand cmd)
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: editor_(te), cmd_(cmd)
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{}
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void set_selected_text()
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{
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if (editor_._m_get_sort_select_points(sel_a_, sel_b_))
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editor_._m_make_select_string(selected_text_);
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}
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void set_caret_pos()
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{
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pos_ = editor_.caret();
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}
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protected:
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EnumCommand get() const override
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{
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return cmd_;
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}
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virtual bool merge(const undoable_command_interface<EnumCommand>& rhs) override
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{
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//Implement later
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return false;
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}
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protected:
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text_editor & editor_;
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upoint pos_;
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upoint sel_a_, sel_b_;
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nana::string selected_text_;
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private:
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const EnumCommand cmd_;
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};
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class text_editor::undo_backspace
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: public basic_undoable < command >
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{
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public:
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undo_backspace(text_editor& editor)
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: basic_undoable<command>(editor, command::backspace)
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{
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}
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void set_removed(nana::string str)
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{
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//use selected_text_ as removed text
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selected_text_ = str;
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}
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void execute(bool redo) override
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{
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editor_._m_cancel_select(0);
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editor_.points_.caret = pos_;
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bool is_enter = ((selected_text_.size() == 1) && ('\n' == selected_text_[0]));
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if (redo)
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{
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if (sel_a_ != sel_b_)
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{
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editor_.select_.a = sel_a_;
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editor_.select_.b = sel_b_;
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editor_._m_erase_select();
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editor_.select_.a = editor_.select_.b;
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editor_.points_.caret = sel_a_;
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}
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else
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{
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if (is_enter)
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{
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editor_.points_.caret = nana::upoint(0, pos_.y + 1);
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editor_.backspace(false);
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}
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else
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editor_.textbase_.erase(pos_.y, pos_.x, selected_text_.size());
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}
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}
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else
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{
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if (is_enter)
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{
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editor_.enter(false);
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}
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else
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{
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editor_._m_put(selected_text_);
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if (sel_a_ != sel_b_)
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{
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editor_.select_.a = sel_a_;
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editor_.select_.b = sel_b_;
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editor_.points_.caret = sel_b_;
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}
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else
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++editor_.points_.caret.x;
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}
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}
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editor_.move_caret(editor_.points_.caret);
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}
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};
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class text_editor::undo_input_text
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: public basic_undoable <command>
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{
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public:
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undo_input_text(text_editor & editor, const nana::string& text)
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: basic_undoable<command>(editor, command::input_text),
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text_(text)
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{
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}
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void execute(bool redo) override
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{
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bool is_enter = (text_.size() == 1 && '\n' == text_[0]);
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editor_._m_cancel_select(0);
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editor_.points_.caret = pos_; //The pos_ specifies the caret position before input
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if (redo)
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{
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if (is_enter)
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{
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editor_.enter(false);
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}
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else
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{
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if (!selected_text_.empty())
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{
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editor_.select_.a = sel_a_;
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editor_.select_.b = sel_b_;
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editor_._m_erase_select();
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}
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editor_.points_.caret = editor_._m_put(text_); //redo
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}
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}
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else
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{
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if (is_enter)
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{
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editor_.points_.caret.x = 0;
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++editor_.points_.caret.y;
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editor_.backspace(false);
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}
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else
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{
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std::vector<std::pair<std::size_t, std::size_t>> lines;
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if (editor_._m_resolve_text(text_, lines))
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{
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editor_.select_.a = pos_;
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editor_.select_.b = upoint(static_cast<unsigned>(lines.back().second - lines.back().first), static_cast<unsigned>(pos_.y + lines.size() - 1));
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editor_.backspace(false);
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editor_.select_.a = editor_.select_.b;
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}
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else
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editor_.textbase_.erase(pos_.y, pos_.x, text_.size()); //undo
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if (!selected_text_.empty())
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{
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editor_.points_.caret = sel_a_;
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editor_._m_put(selected_text_);
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editor_.points_.caret = sel_b_;
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editor_.select_.a = sel_a_; //Reset the selected text
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editor_.select_.b = sel_b_;
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}
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}
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}
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editor_.move_caret(editor_.points_.caret);
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}
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private:
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nana::string text_;
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};
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class text_editor::undo_move_text
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: public basic_undoable <command>
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{
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public:
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undo_move_text(text_editor& editor)
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: basic_undoable<command>(editor, command::move_text)
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{}
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void execute(bool redo) override
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{
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if (redo)
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{
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editor_.select_.a = sel_a_;
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editor_.select_.b = sel_b_;
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editor_.points_.caret = pos_;
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editor_._m_move_select(false);
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return;
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}
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editor_.select_.a = dest_a_;
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editor_.select_.b = dest_b_;
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editor_.points_.caret = sel_a_;
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editor_._m_move_select(false);
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}
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void set_destination(const nana::upoint& dest_a, const nana::upoint& dest_b)
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{
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dest_a_ = dest_a;
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dest_b_ = dest_b;
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}
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private:
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nana::upoint dest_a_, dest_b_;
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};
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class text_editor::editor_behavior_interface
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{
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public:
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virtual ~editor_behavior_interface(){}
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/// Deletes lines between first and second, and then, second line will be merged into first line.
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virtual void merge_lines(std::size_t first, std::size_t second) = 0;
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//Calculates how many lines the specified line of text takes with a specified pixels of width.
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virtual void add_lines(std::size_t pos, std::size_t lines) = 0;
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virtual void pre_calc_line(std::size_t line, unsigned pixels) = 0;
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virtual void pre_calc_lines(unsigned pixels) = 0;
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virtual std::size_t take_lines() const = 0;
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/// Returns the number of lines that the line of text specified by pos takes.
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virtual std::size_t take_lines(std::size_t pos) const = 0;
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virtual void update_line(std::size_t textline, std::size_t secondary_before) = 0;
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virtual void render(nana::color_t fgcolor) = 0;
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virtual nana::point caret_to_screen(upoint) = 0;
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virtual nana::upoint screen_to_caret(point scrpos) = 0;
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virtual bool move_caret_ns(bool to_north) = 0;
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virtual bool adjust_caret_into_screen() = 0;
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};
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class text_editor::behavior_normal
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: public editor_behavior_interface
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{
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public:
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behavior_normal(text_editor& editor)
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: editor_(editor)
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{}
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void merge_lines(std::size_t first, std::size_t second) override{}
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void add_lines(std::size_t pos, std::size_t lines) override{}
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void pre_calc_line(std::size_t, unsigned) override{}
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void pre_calc_lines(unsigned) override{}
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std::size_t take_lines() const override
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{
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return editor_.textbase_.lines();
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}
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std::size_t take_lines(std::size_t pos) const override
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{
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return 1;
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}
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void update_line(std::size_t textline, std::size_t secondary_before) override
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{
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int top = editor_._m_text_top_base() + static_cast<int>(editor_.line_height() * (textline - editor_.points_.offset.y));
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editor_.graph_.rectangle(editor_.text_area_.area.x, top, editor_.text_area_.area.width, editor_.line_height(), API::background(editor_.window_), true);
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editor_._m_draw_string(top, API::foreground(editor_.window_), nana::upoint(0, editor_.points_.caret.y), editor_.textbase_.getline(textline), true);
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}
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void render(nana::color_t fgcolor) override
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{
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auto & points = editor_.points_;
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std::size_t scrlines = editor_.screen_lines() + static_cast<unsigned>(points.offset.y);
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if (scrlines > editor_.textbase_.lines())
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scrlines = editor_.textbase_.lines();
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int y = editor_._m_text_top_base();
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const unsigned pixles = editor_.line_height();
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nana::upoint str_pos(0, static_cast<int>(points.offset.y));
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for (unsigned ln = points.offset.y; ln < scrlines; ++ln, y += pixles)
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{
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editor_._m_draw_string(y, fgcolor, str_pos, editor_.textbase_.getline(ln), true);
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++str_pos.y;
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}
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}
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nana::point caret_to_screen(nana::upoint pos) override
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{
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auto & textbase = editor_.textbase_;
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if (pos.y > static_cast<unsigned>(textbase.lines()))
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pos.y = static_cast<unsigned>(textbase.lines());
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pos.x = editor_._m_pixels_by_char(textbase.getline(pos.y), pos.x) + editor_.text_area_.area.x;
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int pos_y = static_cast<int>((pos.y - editor_.points_.offset.y) * editor_.line_height() + editor_._m_text_top_base());
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int pos_x = static_cast<int>(pos.x - editor_.points_.offset.x);
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return{ pos_x, pos_y };
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}
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nana::upoint screen_to_caret(point scrpos) override
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{
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const auto & textbase = editor_.textbase_;
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const auto & text_area = editor_.text_area_;
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auto & points = editor_.points_;
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nana::upoint res(0, static_cast<unsigned>(_m_textline_from_screen(scrpos.y)));
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//Convert the screen point to text caret point
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const string_type& lnstr = textbase.getline(res.y);
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res.x = static_cast<int>(lnstr.size());
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if (res.x)
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{
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scrpos.x += (points.offset.x - text_area.area.x);
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if (scrpos.x > 0)
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{
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unicode_bidi bidi;
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std::vector<unicode_bidi::entity> reordered;
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bidi.linestr(lnstr.c_str(), lnstr.size(), reordered);
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std::size_t pxbuf_size = 0;
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std::unique_ptr<unsigned[]> pxbuf;
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int xbeg = 0;
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for (auto & ent : reordered)
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{
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std::size_t len = ent.end - ent.begin;
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unsigned str_w = editor_._m_text_extent_size(ent.begin, len).width;
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if (xbeg <= scrpos.x && scrpos.x < xbeg + static_cast<int>(str_w))
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{
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if (len > pxbuf_size)
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{
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pxbuf_size = len;
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pxbuf.reset(new unsigned[len]);
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}
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res.x = editor_._m_char_by_pixels(ent.begin, len, pxbuf.get(), static_cast<int>(str_w), scrpos.x - xbeg, _m_is_right_text(ent));
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res.x += static_cast<unsigned>(ent.begin - lnstr.c_str());
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return res;
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}
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xbeg += static_cast<int>(str_w);
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}
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}
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else
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res.x = 0;
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}
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return res;
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}
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bool move_caret_ns(bool to_north) override
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{
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auto & points = editor_.points_;
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if (to_north) //North
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{
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if (points.caret.y)
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{
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points.caret.x = static_cast<unsigned>(editor_.textbase_.getline(--points.caret.y).size());
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if (points.xpos < points.caret.x)
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points.caret.x = points.xpos;
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bool redraw_required = (static_cast<int>(points.caret.y) < points.offset.y);
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if (static_cast<unsigned>(points.offset.y) > points.caret.y)
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editor_._m_offset_y(static_cast<int>(points.caret.y));
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if (adjust_caret_into_screen())
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redraw_required = true;
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return redraw_required;
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}
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}
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else //South
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{
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if (points.caret.y + 1 < editor_.textbase_.lines())
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{
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points.caret.x = static_cast<unsigned>(editor_.textbase_.getline(++points.caret.y).size());
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if (points.xpos < points.caret.x)
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points.caret.x = points.xpos;
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return adjust_caret_into_screen();
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}
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}
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return false;
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}
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//adjust_caret_into_screen
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//@brief: Adjust the text offset in order to moving caret into visible area if it is out of the visible area
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//@note: the function assumes the points_.caret is correct
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bool adjust_caret_into_screen() override
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{
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const auto scrlines = editor_.screen_lines();
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if (0 == scrlines)
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return false;
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auto& points = editor_.points_;
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auto& textbase = editor_.textbase_;
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editor_._m_get_scrollbar_size();
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const auto delta_pixels = editor_._m_text_extent_size(STR(" ")).width;
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auto x = points.caret.x;
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const string_type& lnstr = textbase.getline(points.caret.y);
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if (x > lnstr.size()) x = static_cast<unsigned>(lnstr.size());
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unsigned text_w = editor_._m_pixels_by_char(textbase.getline(points.caret.y), x);
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unsigned area_w = editor_._m_text_area().width;
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bool adjusted = true;
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if (static_cast<int>(text_w) < points.offset.x)
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{
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points.offset.x = (text_w > delta_pixels ? text_w - delta_pixels : 0);
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}
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else if (area_w && (text_w >= points.offset.x + area_w))
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points.offset.x = text_w - area_w + 2;
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else
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adjusted = false;
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int value = points.offset.y;
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if (scrlines && (points.caret.y >= points.offset.y + scrlines))
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{
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value = static_cast<int>(points.caret.y - scrlines) + 1;
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adjusted = true;
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}
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else if (static_cast<int>(points.caret.y) < points.offset.y)
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{
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if (scrlines >= static_cast<unsigned>(points.offset.y))
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value = 0;
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else
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value = static_cast<int>(points.offset.y - scrlines);
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adjusted = true;
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}
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else if (points.offset.y && (textbase.lines() <= scrlines))
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{
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value = 0;
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adjusted = true;
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}
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editor_._m_offset_y(value);
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editor_._m_scrollbar();
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return adjusted;
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}
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private:
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std::size_t _m_textline_from_screen(int y) const
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{
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const auto & textbase = editor_.textbase_;
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const auto & text_area = editor_.text_area_;
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auto & points = editor_.points_;
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if (textbase.lines())
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{
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if (y < static_cast<int>(text_area.area.y))
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y = points.offset.y ? points.offset.y - 1 : 0;
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else
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y = (y - static_cast<int>(text_area.area.y)) / static_cast<int>(editor_.line_height()) + points.offset.y;
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if (textbase.lines() <= static_cast<unsigned>(y))
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return textbase.lines() - 1;
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else
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return static_cast<std::size_t>(y);
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}
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return 0;
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}
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private:
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text_editor& editor_;
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}; //end class behavior_normal
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|
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class text_editor::behavior_linewrapped
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: public text_editor::editor_behavior_interface
|
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{
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struct text_section
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{
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const nana::char_t* begin;
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const nana::char_t* end;
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unsigned pixels;
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|
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text_section()
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{
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throw std::runtime_error("text_section default construction is forbidden.");
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}
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text_section(const nana::char_t* ptr, const nana::char_t* endptr)
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: begin(ptr), end(endptr)
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{}
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};
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|
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struct line_metrics
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{
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std::size_t take_lines; //The number of lines that text of this line takes.
|
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std::vector<text_section> line_sections;
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};
|
|
public:
|
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behavior_linewrapped(text_editor& editor)
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: editor_(editor)
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{}
|
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|
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void merge_lines(std::size_t first, std::size_t second) override
|
|
{
|
|
if (first > second)
|
|
std::swap(first, second);
|
|
|
|
if (second < linemtr_.size())
|
|
linemtr_.erase(linemtr_.begin() + first + 1, linemtr_.begin() + second);
|
|
|
|
pre_calc_line(first, editor_.width_pixels());
|
|
|
|
//textbase is implement by using deque, and the linemtr holds the text pointers
|
|
//If the textbase is changed, it will check the text pointers.
|
|
std::size_t line = 0;
|
|
for (auto & mtr: linemtr_)
|
|
{
|
|
const nana::string& linestr = editor_.textbase_.getline(line);
|
|
const nana::char_t * p = mtr.line_sections.front().begin;
|
|
if (p < linestr.data() || (linestr.data() + linestr.size() < p))
|
|
pre_calc_line(line, editor_.width_pixels());
|
|
|
|
++line;
|
|
}
|
|
}
|
|
|
|
void add_lines(std::size_t pos, std::size_t lines) override
|
|
{
|
|
if (pos < linemtr_.size())
|
|
{
|
|
for (std::size_t i = 0; i < lines; ++i)
|
|
linemtr_.insert(linemtr_.begin() + pos + i, line_metrics());
|
|
|
|
//textbase is implement by using deque, and the linemtr holds the text pointers
|
|
//If the textbase is changed, it will check the text pointers.
|
|
std::size_t line = 0;
|
|
for (auto & mtr : linemtr_)
|
|
{
|
|
if (line < pos || (pos + lines) <= line)
|
|
{
|
|
const nana::string& linestr = editor_.textbase_.getline(line);
|
|
const nana::char_t * p = mtr.line_sections.front().begin;
|
|
if (p < linestr.data() || (linestr.data() + linestr.size() < p))
|
|
pre_calc_line(line, editor_.width_pixels());
|
|
}
|
|
++line;
|
|
}
|
|
}
|
|
}
|
|
|
|
void pre_calc_line(std::size_t line, unsigned pixels) override
|
|
{
|
|
const string_type& lnstr = editor_.textbase_.getline(line);
|
|
if (lnstr.empty())
|
|
{
|
|
auto & mtr = linemtr_[line];
|
|
mtr.line_sections.clear();
|
|
mtr.line_sections.emplace_back(lnstr.data(), lnstr.data());
|
|
mtr.line_sections.back().pixels = 0;
|
|
mtr.take_lines = 1;
|
|
return;
|
|
}
|
|
|
|
std::vector<text_section> sections;
|
|
_m_text_section(lnstr, sections);
|
|
|
|
std::vector<text_section> line_sections;
|
|
|
|
unsigned text_px = 0;
|
|
const nana::char_t * secondary_begin = nullptr;
|
|
for (auto & ts : sections)
|
|
{
|
|
if (!secondary_begin)
|
|
secondary_begin = ts.begin;
|
|
|
|
const unsigned str_w = editor_._m_text_extent_size(ts.begin, ts.end - ts.begin).width;
|
|
|
|
text_px += str_w;
|
|
if (text_px > pixels)
|
|
{
|
|
if (text_px != str_w)
|
|
{
|
|
line_sections.push_back(text_section(secondary_begin, ts.begin));
|
|
line_sections.back().pixels = text_px - str_w;
|
|
text_px = str_w;
|
|
secondary_begin = ts.begin;
|
|
}
|
|
|
|
if (str_w > pixels) //Indicates the splitting of ts string
|
|
{
|
|
std::size_t len = ts.end - ts.begin;
|
|
std::unique_ptr<unsigned[]> pxbuf(new unsigned[len]);
|
|
editor_.graph_.glyph_pixels(ts.begin, len, pxbuf.get());
|
|
|
|
auto pxptr = pxbuf.get();
|
|
auto pxend = pxptr + len;
|
|
|
|
secondary_begin = ts.begin;
|
|
text_px = 0;
|
|
for (auto pxi = pxptr; pxi != pxend; ++pxi)
|
|
{
|
|
text_px += *pxi;
|
|
if (text_px < pixels)
|
|
continue;
|
|
|
|
const nana::char_t * endptr = ts.begin + (pxi - pxptr) + (text_px == pixels ? 1 : 0);
|
|
line_sections.emplace_back(secondary_begin, endptr);
|
|
line_sections.back().pixels = text_px - (text_px == pixels ? 0 : *pxi);
|
|
secondary_begin = endptr;
|
|
|
|
text_px = (text_px == pixels ? 0 : *pxi);
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
else if (text_px == pixels)
|
|
{
|
|
line_sections.emplace_back(secondary_begin, ts.begin);
|
|
line_sections.back().pixels = text_px - str_w;
|
|
secondary_begin = ts.begin;
|
|
text_px = str_w;
|
|
}
|
|
}
|
|
|
|
auto & mtr = linemtr_[line];
|
|
|
|
mtr.take_lines = line_sections.size();
|
|
mtr.line_sections.swap(line_sections);
|
|
|
|
if (secondary_begin)
|
|
{
|
|
mtr.line_sections.emplace_back(secondary_begin, sections.back().end);
|
|
mtr.line_sections.back().pixels = text_px;
|
|
++mtr.take_lines;
|
|
}
|
|
}
|
|
|
|
void pre_calc_lines(unsigned pixels) override
|
|
{
|
|
const auto lines = editor_.textbase_.lines();
|
|
linemtr_.resize(lines);
|
|
|
|
for (std::remove_const<decltype(lines)>::type i = 0; i < lines; ++i)
|
|
pre_calc_line(i, pixels);
|
|
}
|
|
|
|
std::size_t take_lines() const
|
|
{
|
|
std::size_t lines = 0;
|
|
for (auto & mtr : linemtr_)
|
|
lines += mtr.take_lines;
|
|
|
|
return lines;
|
|
}
|
|
|
|
std::size_t take_lines(std::size_t pos) const
|
|
{
|
|
return (pos < linemtr_.size() ? linemtr_[pos].take_lines : 0);
|
|
}
|
|
|
|
void update_line(std::size_t textline, std::size_t secondary_before) override
|
|
{
|
|
if (take_lines(textline) == secondary_before)
|
|
{
|
|
int top = caret_to_screen(upoint{ 0, static_cast<unsigned>(textline) }).y;
|
|
|
|
const unsigned pixels = editor_.line_height();
|
|
editor_.graph_.rectangle(editor_.text_area_.area.x, top, editor_.width_pixels(), static_cast<unsigned>(pixels * secondary_before), API::background(editor_.window_), true);
|
|
|
|
auto fgcolor = API::foreground(editor_.window_);
|
|
auto text_ptr = editor_.textbase_.getline(textline).data();
|
|
|
|
for (std::size_t pos = 0; pos < secondary_before; ++pos, top+=pixels)
|
|
{
|
|
auto & sct = linemtr_[textline].line_sections[pos];
|
|
editor_._m_draw_string(top, fgcolor, nana::upoint(static_cast<unsigned>(sct.begin - text_ptr), editor_.points_.caret.y), nana::string(sct.begin, sct.end), true);
|
|
}
|
|
}
|
|
else
|
|
editor_.render(API::is_focus_window(editor_.window_));
|
|
}
|
|
|
|
void render(nana::color_t fgcolor) override
|
|
{
|
|
std::size_t scrlines = editor_.screen_lines();
|
|
|
|
std::size_t secondary;
|
|
auto primary = _m_textline_from_screen(0, secondary);
|
|
if (primary >= linemtr_.size() || secondary >= linemtr_[primary].line_sections.size())
|
|
return;
|
|
|
|
nana::upoint str_pos(0, static_cast<unsigned>(primary));
|
|
str_pos.x = static_cast<unsigned>(linemtr_[primary].line_sections[secondary].begin - editor_.textbase_.getline(primary).data());
|
|
|
|
int top = editor_._m_text_top_base();
|
|
const unsigned pixels = editor_.line_height();
|
|
|
|
for (std::size_t pos = 0; pos < scrlines; ++pos, top += pixels)
|
|
{
|
|
if ((primary < linemtr_.size()) && (secondary < linemtr_[primary].line_sections.size()))
|
|
{
|
|
auto & mtr = linemtr_[primary];
|
|
auto & section = mtr.line_sections[secondary];
|
|
|
|
nana::string text(section.begin, section.end);
|
|
editor_._m_draw_string(top, fgcolor, str_pos, text, true);
|
|
++secondary;
|
|
if (secondary >= mtr.line_sections.size())
|
|
{
|
|
++primary;
|
|
secondary = 0;
|
|
str_pos.x = 0;
|
|
++str_pos.y;
|
|
}
|
|
else
|
|
str_pos.x += static_cast<unsigned>(text.size());
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
|
|
nana::point caret_to_screen(upoint pos) override
|
|
{
|
|
const auto & mtr = linemtr_[pos.y];
|
|
|
|
std::size_t lines = 0; //lines before the caret line;
|
|
for (auto & v : linemtr_)
|
|
{
|
|
if (pos.y)
|
|
{
|
|
lines += v.take_lines;
|
|
--pos.y;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
|
|
nana::point scrpos;
|
|
if (0 != pos.x)
|
|
{
|
|
for (auto & sec : mtr.line_sections)
|
|
{
|
|
std::size_t chsize = sec.end - sec.begin;
|
|
if (pos.x < chsize)
|
|
{
|
|
scrpos.x = editor_._m_pixels_by_char(nana::string(sec.begin, sec.end), pos.x);
|
|
break;
|
|
}
|
|
else if (pos.x == chsize)
|
|
{
|
|
scrpos.x = editor_._m_text_extent_size(nana::string(sec.begin, sec.end).data(), sec.end - sec.begin).width;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
pos.x -= static_cast<unsigned>(chsize);
|
|
++lines;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
scrpos.x = 0;
|
|
|
|
scrpos.x += editor_.text_area_.area.x;
|
|
scrpos.y = editor_.text_area_.area.y + static_cast<int>((lines - editor_.points_.offset.y) * editor_.line_height());
|
|
return scrpos;
|
|
}
|
|
|
|
nana::upoint screen_to_caret(point scrpos) override
|
|
{
|
|
std::size_t secondary;
|
|
std::size_t primary = _m_textline_from_screen(scrpos.y, secondary);
|
|
|
|
auto & mtr = linemtr_[primary];
|
|
if (mtr.line_sections.empty())
|
|
return{ 0, static_cast<unsigned>(primary) };
|
|
|
|
//First of all, find the text of secondary.
|
|
auto str = mtr.line_sections[secondary];
|
|
|
|
std::vector<unicode_bidi::entity> reordered;
|
|
unicode_bidi bidi;
|
|
bidi.linestr(str.begin, str.end - str.begin, reordered);
|
|
|
|
std::size_t pxbuf_size = 0;
|
|
std::unique_ptr<unsigned[]> pxbuf;
|
|
|
|
nana::upoint res(static_cast<unsigned>(str.begin - mtr.line_sections.front().begin), static_cast<unsigned>(primary));
|
|
scrpos.x -= editor_.text_area_.area.x;
|
|
if (scrpos.x < 0)
|
|
scrpos.x = 0;
|
|
|
|
int xbeg = 0;
|
|
for (auto & ent : reordered)
|
|
{
|
|
std::size_t len = ent.end - ent.begin;
|
|
unsigned str_w = editor_._m_text_extent_size(ent.begin, len).width;
|
|
if (xbeg <= scrpos.x && scrpos.x < xbeg + static_cast<int>(str_w))
|
|
{
|
|
if (len > pxbuf_size)
|
|
{
|
|
pxbuf.reset(new unsigned[len]);
|
|
pxbuf_size = len;
|
|
}
|
|
res.x += editor_._m_char_by_pixels(ent.begin, len, pxbuf.get(), static_cast<int>(str_w), scrpos.x - xbeg, _m_is_right_text(ent));
|
|
res.x += static_cast<unsigned>(ent.begin - str.begin);
|
|
return res;
|
|
}
|
|
xbeg += static_cast<int>(str_w);
|
|
}
|
|
res.x = static_cast<unsigned>(editor_.textbase_.getline(res.y).size());
|
|
return res;
|
|
}
|
|
|
|
bool move_caret_ns(bool to_north) override
|
|
{
|
|
auto & points = editor_.points_;
|
|
|
|
nana::upoint secondary_pos;
|
|
_m_pos_secondary(points.caret, secondary_pos);
|
|
|
|
if (to_north) //North
|
|
{
|
|
if (0 == secondary_pos.y)
|
|
{
|
|
if (0 == points.caret.y)
|
|
return false;
|
|
|
|
--points.caret.y;
|
|
secondary_pos.y = static_cast<unsigned>(take_lines(points.caret.y)) - 1;
|
|
}
|
|
else
|
|
--secondary_pos.y;
|
|
}
|
|
else //South
|
|
{
|
|
++secondary_pos.y;
|
|
if (secondary_pos.y >= take_lines(points.caret.y))
|
|
{
|
|
secondary_pos.y = 0;
|
|
if (points.caret.y + 1 >= editor_.textbase_.lines())
|
|
return false;
|
|
|
|
++points.caret.y;
|
|
}
|
|
}
|
|
|
|
_m_pos_from_secondary(points.caret.y, secondary_pos, points.caret.x);
|
|
return adjust_caret_into_screen();
|
|
}
|
|
|
|
bool adjust_caret_into_screen() override
|
|
{
|
|
const auto scrlines = editor_.screen_lines();
|
|
if (0 == scrlines)
|
|
return false;
|
|
|
|
auto & points = editor_.points_;
|
|
editor_._m_get_scrollbar_size();
|
|
|
|
std::size_t off_secondary;
|
|
auto off_primary = _m_textline(points.offset.y, off_secondary);
|
|
|
|
unsigned caret_secondary;
|
|
{
|
|
nana::upoint secondpos;
|
|
_m_pos_secondary(points.caret, secondpos);
|
|
caret_secondary = secondpos.y;
|
|
}
|
|
|
|
//Use the caret line for the offset line when caret is in front of current offset line.
|
|
if (off_primary > points.caret.y || (off_primary == points.caret.y && (off_secondary > caret_secondary)))
|
|
{
|
|
//Use the line which was specified by points.caret for the first line.
|
|
_m_set_offset_by_secondary(points.caret.y, caret_secondary);
|
|
return true;
|
|
}
|
|
|
|
//Find the last screen line. If the text does not reach the bottom of screen,
|
|
//do not adjust the offset line.
|
|
nana::upoint bottom; //x=primary, y=secondary
|
|
if (false == _m_advance_secondary(off_primary, off_secondary, static_cast<int>(scrlines - 1), bottom))
|
|
return false;
|
|
|
|
//Do not adjust the offset line if the caret line does not reach the bottom line.
|
|
if (points.caret.y < bottom.x || (points.caret.y == bottom.x && caret_secondary <= bottom.y))
|
|
return false;
|
|
|
|
_m_advance_secondary(points.caret.y, caret_secondary, -static_cast<int>(scrlines - 1), bottom);
|
|
|
|
_m_set_offset_by_secondary(bottom.x, bottom.y);
|
|
return true;
|
|
}
|
|
private:
|
|
void _m_text_section(const nana::string& str, std::vector<text_section>& tsec)
|
|
{
|
|
if (str.empty())
|
|
{
|
|
tsec.emplace_back(str.data(), str.data());
|
|
return;
|
|
}
|
|
const auto end = str.data() + str.size();
|
|
|
|
const nana::char_t * word = nullptr;
|
|
for (auto i = str.data(); i != end; ++i)
|
|
{
|
|
nana::char_t const ch = *i;
|
|
|
|
//CKJ characters and whitespace
|
|
if (' ' == ch || '\t' == ch || (0x4E00 <= ch && ch <= 0x9FCF))
|
|
{
|
|
if (word) //Record the word.
|
|
{
|
|
tsec.emplace_back(word, i);
|
|
word = nullptr;
|
|
}
|
|
|
|
tsec.emplace_back(i, i + 1);
|
|
continue;
|
|
}
|
|
|
|
if (nullptr == word)
|
|
word = i;
|
|
}
|
|
|
|
if(word)
|
|
tsec.emplace_back(word, end);
|
|
}
|
|
|
|
void _m_set_offset_by_secondary(std::size_t primary, std::size_t secondary)
|
|
{
|
|
std::size_t lines = 0;
|
|
|
|
for_each(linemtr_.begin(), linemtr_.begin() + primary, [&lines](const line_metrics& mtr) mutable
|
|
{
|
|
lines += mtr.take_lines;
|
|
});
|
|
|
|
editor_.points_.offset.y = static_cast<int>(lines + secondary);
|
|
}
|
|
|
|
bool _m_advance_secondary(std::size_t primary, std::size_t secondary, int distance, nana::upoint& new_sec)
|
|
{
|
|
if ((primary >= linemtr_.size()) || (secondary >= linemtr_[primary].take_lines))
|
|
return false;
|
|
|
|
if (0 == distance)
|
|
{
|
|
new_sec.x = static_cast<unsigned>(primary);
|
|
new_sec.y = static_cast<unsigned>(secondary);
|
|
return true;
|
|
}
|
|
|
|
if (distance < 0)
|
|
{
|
|
std::size_t n = static_cast<std::size_t>(-distance);
|
|
|
|
if (secondary > n)
|
|
{
|
|
new_sec.x = static_cast<unsigned>(primary);
|
|
new_sec.y = static_cast<unsigned>(secondary - n);
|
|
return true;
|
|
}
|
|
|
|
if (0 == primary)
|
|
return false;
|
|
|
|
--primary;
|
|
n -= (secondary + 1);
|
|
|
|
while (true)
|
|
{
|
|
auto lines = linemtr_[primary].take_lines;
|
|
if (lines >= n)
|
|
{
|
|
new_sec.x = static_cast<unsigned>(primary);
|
|
new_sec.y = static_cast<unsigned>(lines - n);
|
|
return true;
|
|
}
|
|
if (0 == primary)
|
|
return false;
|
|
|
|
--primary;
|
|
n -= lines;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
std::size_t n = static_cast<std::size_t>(distance);
|
|
|
|
if (linemtr_[primary].take_lines - (secondary + 1) >= n)
|
|
{
|
|
new_sec.x = static_cast<unsigned>(primary);
|
|
new_sec.y = static_cast<unsigned>(secondary + n);
|
|
return true;
|
|
}
|
|
|
|
n -= (linemtr_[primary].take_lines - (secondary + 1));
|
|
|
|
while (++primary < linemtr_.size())
|
|
{
|
|
auto & mtr = linemtr_[primary];
|
|
if (mtr.take_lines >= n)
|
|
{
|
|
new_sec.x = static_cast<unsigned>(primary);
|
|
new_sec.y = static_cast<unsigned>(n - 1);
|
|
return true;
|
|
}
|
|
n -= mtr.take_lines;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool _m_pos_from_secondary(std::size_t textline, const nana::upoint& secondary, unsigned & pos)
|
|
{
|
|
if (textline >= linemtr_.size())
|
|
return false;
|
|
|
|
auto & mtr = linemtr_[textline];
|
|
if (secondary.y >= mtr.line_sections.size() || mtr.line_sections.size() != mtr.take_lines)
|
|
return false;
|
|
|
|
auto & section = mtr.line_sections[secondary.y];
|
|
unsigned len = static_cast<unsigned>(section.end - section.begin);
|
|
|
|
auto chptr = section.begin + (secondary.x > len ? len : secondary.x);
|
|
pos = static_cast<unsigned>(chptr - editor_.textbase_.getline(textline).data());
|
|
return true;
|
|
}
|
|
|
|
bool _m_pos_secondary(const nana::upoint& charpos, nana::upoint& secondary_pos) const
|
|
{
|
|
if (charpos.y >= linemtr_.size())
|
|
return false;
|
|
|
|
secondary_pos.x = charpos.x;
|
|
secondary_pos.y = 0;
|
|
|
|
unsigned len = 0;
|
|
auto & mtr = linemtr_[charpos.y];
|
|
for (auto & ts : mtr.line_sections)
|
|
{
|
|
len = static_cast<unsigned>(ts.end - ts.begin);
|
|
if (len >= secondary_pos.x)
|
|
return true;
|
|
|
|
++secondary_pos.y;
|
|
secondary_pos.x -= static_cast<unsigned>(len);
|
|
}
|
|
--secondary_pos.y;
|
|
secondary_pos.x = len;
|
|
return true;
|
|
}
|
|
|
|
|
|
std::size_t _m_textline(std::size_t scrline, std::size_t & secondary) const
|
|
{
|
|
secondary = 0;
|
|
std::size_t primary = 0;
|
|
|
|
for (auto & mtr : linemtr_)
|
|
{
|
|
if (mtr.take_lines > scrline)
|
|
{
|
|
secondary = scrline;
|
|
return primary;
|
|
}
|
|
else
|
|
scrline -= mtr.take_lines;
|
|
|
|
++primary;
|
|
}
|
|
|
|
return primary;
|
|
}
|
|
|
|
//secondary, index of line that the text was splitted into multilines.
|
|
std::size_t _m_textline_from_screen(int y, std::size_t & secondary) const
|
|
{
|
|
const auto & textbase = editor_.textbase_;
|
|
const auto & text_area = editor_.text_area_;
|
|
auto & points = editor_.points_;
|
|
|
|
secondary = 0;
|
|
|
|
if (0 == textbase.lines())
|
|
return 0;
|
|
std::size_t screen_line;
|
|
if (y < text_area.area.y)
|
|
{
|
|
screen_line = (text_area.area.y - y) / static_cast<int>(editor_.line_height());
|
|
if (screen_line > static_cast<std::size_t>(points.offset.y))
|
|
screen_line = 0;
|
|
else
|
|
screen_line = static_cast<std::size_t>(points.offset.y) - screen_line;
|
|
}
|
|
else
|
|
screen_line = static_cast<std::size_t>((y - text_area.area.y) / static_cast<int>(editor_.line_height()) + points.offset.y);
|
|
|
|
std::size_t primary = 0;
|
|
for (auto & mtr : linemtr_)
|
|
{
|
|
if (mtr.take_lines > screen_line)
|
|
{
|
|
secondary = screen_line;
|
|
return primary;
|
|
}
|
|
else
|
|
screen_line -= mtr.take_lines;
|
|
|
|
++primary;
|
|
}
|
|
secondary = linemtr_.back().line_sections.size() - 1;
|
|
return linemtr_.size() - 1;
|
|
}
|
|
private:
|
|
text_editor& editor_;
|
|
std::vector<line_metrics> linemtr_;
|
|
}; //end class behavior_linewrapped
|
|
|
|
//class text_editor
|
|
text_editor::text_editor(window wd, graph_reference graph)
|
|
: behavior_(new behavior_normal(*this)),
|
|
window_(wd), graph_(graph)
|
|
{
|
|
text_area_.area = graph.size();
|
|
text_area_.captured = false;
|
|
text_area_.tab_space = 4;
|
|
text_area_.scroll_pixels = 16;
|
|
text_area_.hscroll = text_area_.vscroll = 0;
|
|
select_.mode_selection = selection::mode_no_selected;
|
|
select_.dragged = false;
|
|
|
|
API::create_caret(wd, 1, line_height());
|
|
API::background(wd, 0xFFFFFF);
|
|
API::foreground(wd, 0x000000);
|
|
}
|
|
|
|
text_editor::~text_editor()
|
|
{
|
|
//For instance of unique_ptr pimpl idiom.
|
|
}
|
|
|
|
bool text_editor::respone_keyboard(nana::char_t key, bool enterable) //key is a character of ASCII code
|
|
{
|
|
if (keyboard::end_of_text == key)
|
|
{
|
|
copy();
|
|
return false;
|
|
}
|
|
|
|
if (attributes_.editable && enterable)
|
|
{
|
|
switch (key)
|
|
{
|
|
case '\b':
|
|
backspace(); break;
|
|
case '\n': case '\r':
|
|
enter(); break;
|
|
case keyboard::sync_idel:
|
|
paste(); break;
|
|
case keyboard::tab:
|
|
put(static_cast<char_t>(keyboard::tab)); break;
|
|
case keyboard::cancel:
|
|
cut();
|
|
break;
|
|
case keyboard::end_of_medium:
|
|
undo(true);
|
|
break;
|
|
case keyboard::substitute:
|
|
undo(false);
|
|
break;
|
|
default:
|
|
if (key >= 0xFF || (32 <= key && key <= 126))
|
|
put(key);
|
|
else if (sizeof(nana::char_t) == sizeof(char))
|
|
{ //Non-Unicode Version for Non-English characters
|
|
if (key & (1 << (sizeof(nana::char_t) * 8 - 1)))
|
|
put(key);
|
|
}
|
|
}
|
|
reset_caret();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void text_editor::typeface_changed()
|
|
{
|
|
behavior_->pre_calc_lines(width_pixels());
|
|
}
|
|
|
|
bool text_editor::line_wrapped() const
|
|
{
|
|
return attributes_.line_wrapped;
|
|
}
|
|
|
|
bool text_editor::line_wrapped(bool autl)
|
|
{
|
|
if (autl != attributes_.line_wrapped)
|
|
{
|
|
attributes_.line_wrapped = autl;
|
|
if (autl)
|
|
{
|
|
behavior_.reset(new behavior_linewrapped(*this));
|
|
text_area_.vscroll = text_area_.scroll_pixels;
|
|
text_area_.hscroll = 0;
|
|
behavior_->pre_calc_lines(width_pixels());
|
|
}
|
|
else
|
|
behavior_.reset(new behavior_normal(*this));
|
|
|
|
points_.offset.x = 0;
|
|
_m_offset_y(0);
|
|
move_caret(upoint{});
|
|
|
|
_m_scrollbar();
|
|
render(API::is_focus_window(window_));
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void text_editor::border_renderer(std::function<void(nana::paint::graphics&, nana::color_t)> f)
|
|
{
|
|
text_area_.border_renderer = f;
|
|
}
|
|
|
|
bool text_editor::load(const nana::char_t* fs)
|
|
{
|
|
if (!textbase_.load(fs))
|
|
return false;
|
|
|
|
_m_reset();
|
|
behavior_->pre_calc_lines(width_pixels());
|
|
render(API::is_focus_window(window_));
|
|
_m_scrollbar();
|
|
return true;
|
|
}
|
|
|
|
bool text_editor::text_area(const nana::rectangle& r)
|
|
{
|
|
if(text_area_.area == r)
|
|
return false;
|
|
|
|
text_area_.area = r;
|
|
if(attributes_.enable_counterpart)
|
|
attributes_.counterpart.make(r.width, r.height);
|
|
|
|
behavior_->pre_calc_lines(width_pixels());
|
|
_m_scrollbar();
|
|
return true;
|
|
}
|
|
|
|
bool text_editor::tip_string(nana::string&& str)
|
|
{
|
|
if(attributes_.tip_string == str)
|
|
return false;
|
|
|
|
attributes_.tip_string = std::move(str);
|
|
return true;
|
|
}
|
|
|
|
const text_editor::attributes& text_editor::attr() const
|
|
{
|
|
return attributes_;
|
|
}
|
|
|
|
bool text_editor::multi_lines(bool ml)
|
|
{
|
|
if((ml == false) && attributes_.multi_lines)
|
|
{
|
|
//retain the first line and remove the extra lines
|
|
if (textbase_.erase(1, textbase_.lines() - 1))
|
|
_m_reset();
|
|
}
|
|
|
|
if (attributes_.multi_lines == ml)
|
|
return false;
|
|
|
|
attributes_.multi_lines = ml;
|
|
|
|
if (!ml)
|
|
line_wrapped(false);
|
|
|
|
_m_scrollbar();
|
|
return true;
|
|
}
|
|
|
|
void text_editor::editable(bool v)
|
|
{
|
|
attributes_.editable = v;
|
|
}
|
|
|
|
void text_editor::enable_background(bool enb)
|
|
{
|
|
attributes_.enable_background = enb;
|
|
}
|
|
|
|
void text_editor::enable_background_counterpart(bool enb)
|
|
{
|
|
attributes_.enable_counterpart = enb;
|
|
if(enb)
|
|
attributes_.counterpart.make(text_area_.area.width, text_area_.area.height);
|
|
else
|
|
attributes_.counterpart.release();
|
|
}
|
|
|
|
void text_editor::undo_enabled(bool enb)
|
|
{
|
|
undo_.enable(enb);
|
|
}
|
|
|
|
bool text_editor::undo_enabled() const
|
|
{
|
|
return undo_.enabled();
|
|
}
|
|
|
|
void text_editor::undo_max_steps(std::size_t maxs)
|
|
{
|
|
undo_.max_steps(maxs);
|
|
}
|
|
|
|
std::size_t text_editor::undo_max_steps() const
|
|
{
|
|
return undo_.max_steps();
|
|
}
|
|
|
|
text_editor::ext_renderer_tag& text_editor::ext_renderer() const
|
|
{
|
|
return ext_renderer_;
|
|
}
|
|
|
|
unsigned text_editor::line_height() const
|
|
{
|
|
return (graph_ ? (graph_.text_extent_size(STR("jH{")).height) : 0);
|
|
}
|
|
|
|
unsigned text_editor::screen_lines() const
|
|
{
|
|
if(graph_ && (text_area_.area.height > text_area_.hscroll))
|
|
{
|
|
auto lines = (text_area_.area.height - text_area_.hscroll) / line_height();
|
|
return (lines ? lines : 1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
bool text_editor::mouse_enter(bool enter)
|
|
{
|
|
if((false == enter) && (false == text_area_.captured))
|
|
API::window_cursor(window_, nana::cursor::arrow);
|
|
|
|
if(API::focus_window() != window_)
|
|
{
|
|
render(false);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool text_editor::mouse_down(bool left_button, const point& scrpos)
|
|
{
|
|
if (!hit_text_area(scrpos))
|
|
return false;
|
|
|
|
if(left_button)
|
|
{
|
|
API::capture_window(window_, true);
|
|
text_area_.captured = true;
|
|
|
|
//Set caret pos by screen point and get the caret pos.
|
|
auto pos = mouse_caret(scrpos);
|
|
if(!hit_select_area(pos))
|
|
{
|
|
if(!select(false))
|
|
{
|
|
select_.a = points_.caret; //Set begin caret
|
|
set_end_caret();
|
|
}
|
|
select_.mode_selection = selection::mode_mouse_selected;
|
|
}
|
|
else
|
|
select_.mode_selection = selection::mode_no_selected;
|
|
}
|
|
text_area_.border_renderer(graph_, _m_bgcolor());
|
|
return true;
|
|
}
|
|
|
|
bool text_editor::mouse_move(bool left_button, const point& scrpos)
|
|
{
|
|
cursor cur = cursor::iterm;
|
|
if ((!hit_text_area(scrpos)) && (!text_area_.captured))
|
|
cur = cursor::arrow;
|
|
|
|
API::window_cursor(window_, cur);
|
|
|
|
if(left_button)
|
|
{
|
|
auto caret_pos_before = caret();
|
|
mouse_caret(scrpos);
|
|
|
|
if(select_.mode_selection != selection::mode_no_selected)
|
|
set_end_caret();
|
|
else if ((!select_.dragged) && (caret_pos_before != caret()))
|
|
select_.dragged = true;
|
|
|
|
text_area_.border_renderer(graph_, _m_bgcolor());
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool text_editor::mouse_up(bool left_button, const point& scrpos)
|
|
{
|
|
auto is_prev_no_selected = (select_.mode_selection == selection::mode_no_selected);
|
|
|
|
if(select_.mode_selection == selection::mode_mouse_selected)
|
|
{
|
|
select_.mode_selection = selection::mode_no_selected;
|
|
set_end_caret();
|
|
}
|
|
else if (is_prev_no_selected)
|
|
{
|
|
if((!select_.dragged) || (!move_select()))
|
|
select(false);
|
|
}
|
|
select_.dragged = false;
|
|
|
|
API::capture_window(window_, false);
|
|
text_area_.captured = false;
|
|
if (hit_text_area(scrpos) == false)
|
|
API::window_cursor(window_, nana::cursor::arrow);
|
|
|
|
text_area_.border_renderer(graph_, _m_bgcolor());
|
|
|
|
//Redraw if is_prev_no_selected is true
|
|
return is_prev_no_selected;
|
|
}
|
|
|
|
textbase<nana::char_t> & text_editor::textbase()
|
|
{
|
|
return textbase_;
|
|
}
|
|
|
|
const textbase<nana::char_t> & text_editor::textbase() const
|
|
{
|
|
return textbase_;
|
|
}
|
|
|
|
bool text_editor::getline(std::size_t pos, nana::string& text) const
|
|
{
|
|
if(pos < textbase_.lines())
|
|
{
|
|
text = textbase_.getline(pos);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void text_editor::text(nana::string str)
|
|
{
|
|
textbase_.erase_all();
|
|
_m_reset();
|
|
put(std::move(str));
|
|
}
|
|
|
|
nana::string text_editor::text() const
|
|
{
|
|
nana::string str;
|
|
std::size_t lines = textbase_.lines();
|
|
if(lines > 0)
|
|
{
|
|
str = textbase_.getline(0);
|
|
for(std::size_t i = 1; i < lines; ++i)
|
|
{
|
|
str += STR("\n\r");
|
|
str += textbase_.getline(i);
|
|
}
|
|
}
|
|
return str;
|
|
}
|
|
|
|
//move_caret
|
|
//Set caret position through text coordinate
|
|
void text_editor::move_caret(const upoint& crtpos)
|
|
{
|
|
if(API::is_focus_window(window_))
|
|
{
|
|
const unsigned line_pixels = line_height();
|
|
auto pos = this->behavior_->caret_to_screen(crtpos);
|
|
const int end_y = pos.y + static_cast<int>(line_pixels);
|
|
|
|
bool visible = false;
|
|
if (hit_text_area(pos) && (end_y > text_area_.area.y))
|
|
{
|
|
visible = true;
|
|
if (end_y > _m_endy())
|
|
API::caret_size(window_, nana::size(1, line_pixels - (end_y - _m_endy())));
|
|
else if (API::caret_size(window_).height != line_pixels)
|
|
reset_caret_height();
|
|
}
|
|
|
|
API::caret_visible(window_, visible);
|
|
|
|
if(visible)
|
|
API::caret_pos(window_, pos.x, pos.y);
|
|
}
|
|
}
|
|
|
|
void text_editor::move_caret_end()
|
|
{
|
|
points_.caret.y = static_cast<unsigned>(textbase_.lines());
|
|
if(points_.caret.y) --points_.caret.y;
|
|
points_.caret.x = static_cast<unsigned>(textbase_.getline(points_.caret.y).size());
|
|
}
|
|
|
|
void text_editor::reset_caret_height() const
|
|
{
|
|
API::caret_size(window_, nana::size(1, line_height()));
|
|
}
|
|
|
|
void text_editor::reset_caret()
|
|
{
|
|
move_caret(points_.caret);
|
|
}
|
|
|
|
void text_editor::show_caret(bool isshow)
|
|
{
|
|
if(isshow == false || API::is_focus_window(window_))
|
|
API::caret_visible(window_, isshow);
|
|
}
|
|
|
|
bool text_editor::selected() const
|
|
{
|
|
return (select_.a != select_.b);
|
|
}
|
|
|
|
void text_editor::set_end_caret()
|
|
{
|
|
bool new_sel_end = (select_.b != points_.caret);
|
|
select_.b = points_.caret;
|
|
points_.xpos = points_.caret.x;
|
|
|
|
if (new_sel_end || behavior_->adjust_caret_into_screen())
|
|
render(true);
|
|
}
|
|
|
|
bool text_editor::select(bool yes)
|
|
{
|
|
if(yes)
|
|
{
|
|
select_.a.x = select_.a.y = 0;
|
|
select_.b.y = static_cast<unsigned>(textbase_.lines());
|
|
if(select_.b.y) --select_.b.y;
|
|
select_.b.x = static_cast<unsigned>(textbase_.getline(select_.b.y).size());
|
|
select_.mode_selection = selection::mode_method_selected;
|
|
return true;
|
|
}
|
|
|
|
select_.mode_selection = selection::mode_no_selected;
|
|
if(_m_cancel_select(0))
|
|
{
|
|
render(true);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool text_editor::hit_text_area(const point& pos) const
|
|
{
|
|
return ((text_area_.area.x <= pos.x && pos.x < _m_endx()) && (text_area_.area.y <= pos.y && pos.y < _m_endy()));
|
|
}
|
|
|
|
bool text_editor::hit_select_area(nana::upoint pos) const
|
|
{
|
|
nana::upoint a, b;
|
|
if(_m_get_sort_select_points(a, b))
|
|
{
|
|
if((pos.y > a.y || (pos.y == a.y && pos.x >= a.x)) && ((pos.y < b.y) || (pos.y == b.y && pos.x < b.x)))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool text_editor::move_select()
|
|
{
|
|
if(hit_select_area(points_.caret) || (select_.b == points_.caret))
|
|
{
|
|
points_.caret = select_.b;
|
|
|
|
if (behavior_->adjust_caret_into_screen())
|
|
render(true);
|
|
|
|
reset_caret();
|
|
return true;
|
|
}
|
|
|
|
if (_m_move_select(true))
|
|
{
|
|
behavior_->adjust_caret_into_screen();
|
|
render(true);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool text_editor::mask(nana::char_t ch)
|
|
{
|
|
if(mask_char_ != ch)
|
|
{
|
|
mask_char_ = ch;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
unsigned text_editor::width_pixels() const
|
|
{
|
|
if (attributes_.line_wrapped)
|
|
return (text_area_.area.width > text_area_.vscroll ? text_area_.area.width - text_area_.vscroll : 0);
|
|
|
|
auto caret_px = API::caret_size(window_).width;
|
|
return (text_area_.area.width > caret_px ? text_area_.area.width - caret_px : 0);
|
|
}
|
|
|
|
void text_editor::draw_scroll_rectangle()
|
|
{
|
|
if(text_area_.vscroll && text_area_.hscroll)
|
|
{
|
|
graph_.rectangle( text_area_.area.x + static_cast<int>(text_area_.area.width - text_area_.vscroll),
|
|
text_area_.area.y + static_cast<int>(text_area_.area.height - text_area_.hscroll),
|
|
text_area_.vscroll, text_area_.hscroll, nana::color::button_face, true);
|
|
}
|
|
}
|
|
|
|
void text_editor::render(bool has_focus)
|
|
{
|
|
const nana::color_t bgcolor = _m_bgcolor();
|
|
|
|
nana::color_t fgcolor = API::foreground(window_);
|
|
if (!API::window_enabled(window_))
|
|
fgcolor = nana::paint::graphics::mix(bgcolor, fgcolor, 0.5);
|
|
|
|
//Draw background
|
|
if(attributes_.enable_background)
|
|
graph_.rectangle(text_area_.area, bgcolor, true);
|
|
|
|
if(ext_renderer_.background)
|
|
ext_renderer_.background(graph_, text_area_.area, bgcolor);
|
|
|
|
if(attributes_.counterpart && !text_area_.area.empty())
|
|
attributes_.counterpart.bitblt(nana::rectangle(0, 0, text_area_.area.width, text_area_.area.height), graph_, nana::point(text_area_.area.x, text_area_.area.y));
|
|
|
|
if((false == textbase_.empty()) || has_focus)
|
|
behavior_->render(fgcolor);
|
|
else
|
|
_m_draw_tip_string();
|
|
|
|
draw_scroll_rectangle();
|
|
text_area_.border_renderer(graph_, bgcolor);
|
|
}
|
|
//public:
|
|
void text_editor::put(nana::string text)
|
|
{
|
|
auto undo_ptr = std::unique_ptr<undo_input_text>{ new undo_input_text(*this, text) };
|
|
|
|
undo_ptr->set_selected_text();
|
|
|
|
//Do not forget to assign the _m_erase_select() to caret
|
|
//because _m_put() will insert the text at the position where the caret is.
|
|
points_.caret = _m_erase_select();
|
|
|
|
undo_ptr->set_caret_pos();
|
|
points_.caret = _m_put(std::move(text));
|
|
|
|
undo_.push(std::move(undo_ptr));
|
|
|
|
if(graph_)
|
|
{
|
|
behavior_->adjust_caret_into_screen();
|
|
reset_caret();
|
|
render(API::is_focus_window(window_));
|
|
_m_scrollbar();
|
|
|
|
points_.xpos = points_.caret.x;
|
|
}
|
|
}
|
|
|
|
void text_editor::put(nana::char_t c)
|
|
{
|
|
auto undo_ptr = std::unique_ptr < undo_input_text > {new undo_input_text(*this, nana::string(1, c))};
|
|
bool refresh = (select_.a != select_.b);
|
|
|
|
undo_ptr->set_selected_text();
|
|
if(refresh)
|
|
points_.caret = _m_erase_select();
|
|
|
|
undo_ptr->set_caret_pos();
|
|
undo_.push(std::move(undo_ptr));
|
|
|
|
auto secondary_before = behavior_->take_lines(points_.caret.y);
|
|
textbase_.insert(points_.caret, nana::string(1, c));
|
|
behavior_->pre_calc_line(points_.caret.y, width_pixels());
|
|
points_.caret.x ++;
|
|
|
|
if(refresh || _m_draw(c, secondary_before))
|
|
render(true);
|
|
else
|
|
draw_scroll_rectangle();
|
|
|
|
_m_scrollbar();
|
|
|
|
points_.xpos = points_.caret.x;
|
|
}
|
|
|
|
void text_editor::copy() const
|
|
{
|
|
nana::string str;
|
|
if(_m_make_select_string(str))
|
|
nana::system::dataexch().set(str);
|
|
}
|
|
|
|
void text_editor::cut()
|
|
{
|
|
copy();
|
|
del();
|
|
}
|
|
|
|
void text_editor::paste()
|
|
{
|
|
nana::string text;
|
|
nana::system::dataexch().get(text);
|
|
|
|
if (!text.empty())
|
|
put(std::move(text));
|
|
}
|
|
|
|
void text_editor::enter(bool record_undo)
|
|
{
|
|
if(false == attributes_.multi_lines)
|
|
return;
|
|
|
|
auto undo_ptr = std::unique_ptr<undo_input_text>(new undo_input_text(*this, nana::string(1, '\n')));
|
|
bool need_refresh = (select_.a != select_.b);
|
|
|
|
undo_ptr->set_selected_text();
|
|
if(need_refresh)
|
|
points_.caret = _m_erase_select();
|
|
|
|
undo_ptr->set_caret_pos();
|
|
const string_type& lnstr = textbase_.getline(points_.caret.y);
|
|
++points_.caret.y;
|
|
|
|
if(lnstr.size() > points_.caret.x)
|
|
{
|
|
//Breaks the line and moves the rest part to a new line
|
|
auto rest_part_len = lnstr.size() - points_.caret.x; //Firstly get the length of rest part, because lnstr may be invalid after insertln
|
|
textbase_.insertln(points_.caret.y, lnstr.substr(points_.caret.x));
|
|
textbase_.erase(points_.caret.y - 1, points_.caret.x, rest_part_len);
|
|
}
|
|
else
|
|
{
|
|
if (textbase_.lines() == 0)
|
|
textbase_.insertln(0, nana::string{});
|
|
textbase_.insertln(points_.caret.y, nana::string{});
|
|
}
|
|
|
|
if (record_undo)
|
|
undo_.push(std::move(undo_ptr));
|
|
|
|
const auto width_px = width_pixels();
|
|
behavior_->add_lines(points_.caret.y - 1, 1);
|
|
behavior_->pre_calc_line(points_.caret.y, width_px);
|
|
behavior_->pre_calc_line(points_.caret.y - 1, width_px);
|
|
|
|
points_.caret.x = 0;
|
|
|
|
if(points_.offset.x || (points_.caret.y < textbase_.lines()) || textbase_.getline(points_.caret.y).size())
|
|
{
|
|
points_.offset.x = 0;
|
|
need_refresh = true;
|
|
}
|
|
|
|
if (behavior_->adjust_caret_into_screen() || need_refresh)
|
|
render(true);
|
|
|
|
_m_scrollbar();
|
|
}
|
|
|
|
void text_editor::del()
|
|
{
|
|
bool has_erase = true;
|
|
|
|
if(select_.a == select_.b)
|
|
{
|
|
if(textbase_.getline(points_.caret.y).size() > points_.caret.x)
|
|
{
|
|
points_.caret.x++;
|
|
}
|
|
else if(textbase_.lines() && (points_.caret.y < textbase_.lines() - 1))
|
|
{ //Move to next line
|
|
points_.caret.x = 0;
|
|
++ points_.caret.y;
|
|
}
|
|
else
|
|
has_erase = false; //No characters behind the caret
|
|
}
|
|
|
|
if(has_erase) backspace();
|
|
|
|
_m_scrollbar();
|
|
points_.xpos = points_.caret.x;
|
|
}
|
|
|
|
void text_editor::backspace(bool record_undo)
|
|
{
|
|
auto undo_ptr = std::unique_ptr<undo_backspace>(new undo_backspace(*this));
|
|
bool has_to_redraw = true;
|
|
if(select_.a == select_.b)
|
|
{
|
|
if(points_.caret.x)
|
|
{
|
|
unsigned erase_number = 1;
|
|
--points_.caret.x;
|
|
|
|
const string_type& lnstr = textbase_.getline(points_.caret.y);
|
|
#ifndef NANA_UNICODE
|
|
if(is_incomplete(lnstr, points_.caret.x) && (points_.caret.x))
|
|
{
|
|
textbase_.erase(points_.caret.y, points_.caret.x, 1);
|
|
--points_.caret.x;
|
|
erase_number = 2;
|
|
}
|
|
#endif
|
|
undo_ptr->set_caret_pos();
|
|
undo_ptr->set_removed(lnstr.substr(points_.caret.x, erase_number));
|
|
auto secondary = behavior_->take_lines(points_.caret.y);
|
|
textbase_.erase(points_.caret.y, points_.caret.x, erase_number);
|
|
behavior_->pre_calc_line(points_.caret.y, width_pixels());
|
|
if(_m_move_offset_x_while_over_border(-2) == false)
|
|
{
|
|
behavior_->update_line(points_.caret.y, secondary);
|
|
draw_scroll_rectangle();
|
|
has_to_redraw = false;
|
|
}
|
|
}
|
|
else if (points_.caret.y)
|
|
{
|
|
points_.caret.x = static_cast<unsigned>(textbase_.getline(--points_.caret.y).size());
|
|
textbase_.merge(points_.caret.y);
|
|
behavior_->merge_lines(points_.caret.y, points_.caret.y + 1);
|
|
undo_ptr->set_caret_pos();
|
|
undo_ptr->set_removed(nana::string(1, '\n'));
|
|
}
|
|
else
|
|
undo_ptr.reset();
|
|
}
|
|
else
|
|
{
|
|
undo_ptr->set_selected_text();
|
|
points_.caret = _m_erase_select();
|
|
undo_ptr->set_caret_pos();
|
|
}
|
|
|
|
if (record_undo)
|
|
undo_.push(std::move(undo_ptr));
|
|
|
|
if(has_to_redraw)
|
|
{
|
|
behavior_->pre_calc_lines(width_pixels());
|
|
behavior_->adjust_caret_into_screen();
|
|
render(true);
|
|
}
|
|
_m_scrollbar();
|
|
}
|
|
|
|
void text_editor::undo(bool reverse)
|
|
{
|
|
if (reverse)
|
|
undo_.redo();
|
|
else
|
|
undo_.undo();
|
|
|
|
behavior_->pre_calc_lines(width_pixels());
|
|
behavior_->adjust_caret_into_screen();
|
|
render(true);
|
|
_m_scrollbar();
|
|
|
|
}
|
|
|
|
bool text_editor::move(nana::char_t key)
|
|
{
|
|
switch(key)
|
|
{
|
|
case keyboard::os_arrow_left: move_left(); break;
|
|
case keyboard::os_arrow_right: move_right(); break;
|
|
case keyboard::os_arrow_up: move_ns(true); break;
|
|
case keyboard::os_arrow_down: move_ns(false); break;
|
|
case keyboard::os_del:
|
|
if (this->attr().editable)
|
|
del();
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
void text_editor::move_ns(bool to_north)
|
|
{
|
|
const bool redraw_required = _m_cancel_select(0);
|
|
if (behavior_->move_caret_ns(to_north) || redraw_required)
|
|
render(true);
|
|
_m_scrollbar();
|
|
}
|
|
|
|
void text_editor::move_left()
|
|
{
|
|
if(_m_cancel_select(1) == false)
|
|
{
|
|
if(points_.caret.x)
|
|
{
|
|
--points_.caret.x;
|
|
#ifndef NANA_UNICODE
|
|
if(is_incomplete(textbase_.getline(points_.caret.y), points_.caret.x))
|
|
--points_.caret.x;
|
|
#endif
|
|
bool adjust_y = false;
|
|
if (attributes_.line_wrapped)
|
|
adjust_y = behavior_->adjust_caret_into_screen();
|
|
|
|
bool adjust_x = _m_move_offset_x_while_over_border(-2);
|
|
|
|
if (adjust_x || adjust_y)
|
|
render(true);
|
|
}
|
|
else if(points_.caret.y)
|
|
{ //Move to previous line
|
|
points_.caret.x = static_cast<unsigned>(textbase_.getline(-- points_.caret.y).size());
|
|
if (behavior_->adjust_caret_into_screen())
|
|
render(true);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
behavior_->adjust_caret_into_screen();
|
|
render(true);
|
|
}
|
|
|
|
_m_scrollbar();
|
|
points_.xpos = points_.caret.x;
|
|
}
|
|
|
|
void text_editor::move_right()
|
|
{
|
|
if(_m_cancel_select(2) == false)
|
|
{
|
|
nana::string lnstr = textbase_.getline(points_.caret.y);
|
|
if(lnstr.size() > points_.caret.x)
|
|
{
|
|
++points_.caret.x;
|
|
#ifndef NANA_UNICODE
|
|
if(is_incomplete(lnstr, points_.caret.x))
|
|
++points_.caret.x;
|
|
#endif
|
|
bool adjust_y = (attributes_.line_wrapped && behavior_->adjust_caret_into_screen());
|
|
if (_m_move_offset_x_while_over_border(2) || adjust_y)
|
|
render(true);
|
|
}
|
|
else if(textbase_.lines() && (points_.caret.y < textbase_.lines() - 1))
|
|
{ //Move to next line
|
|
points_.caret.x = 0;
|
|
++ points_.caret.y;
|
|
|
|
if (behavior_->adjust_caret_into_screen())
|
|
render(true);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (behavior_->adjust_caret_into_screen())
|
|
render(true);
|
|
}
|
|
|
|
_m_scrollbar();
|
|
points_.xpos = points_.caret.x;
|
|
}
|
|
|
|
nana::upoint text_editor::mouse_caret(const point& scrpos) //From screen position
|
|
{
|
|
points_.caret = behavior_->screen_to_caret(scrpos);
|
|
|
|
if (behavior_->adjust_caret_into_screen())
|
|
render(true);
|
|
|
|
move_caret(points_.caret);
|
|
return points_.caret;
|
|
}
|
|
|
|
nana::upoint text_editor::caret() const
|
|
{
|
|
return points_.caret;
|
|
}
|
|
|
|
bool text_editor::scroll(bool upwards, bool vert)
|
|
{
|
|
if(vert && attributes_.vscroll)
|
|
{
|
|
attributes_.vscroll->make_step(!upwards);
|
|
if(_m_scroll_text(true))
|
|
{
|
|
render(true);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nana::color_t text_editor::_m_bgcolor() const
|
|
{
|
|
return (!API::window_enabled(window_) ? 0xE0E0E0 : API::background(window_));
|
|
}
|
|
|
|
bool text_editor::_m_scroll_text(bool vert)
|
|
{
|
|
if (vert)
|
|
{
|
|
if (attributes_.vscroll)
|
|
{
|
|
auto sv = static_cast<int>(attributes_.vscroll->value());
|
|
if (sv != points_.offset.y)
|
|
{
|
|
_m_offset_y(sv);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
else if(attributes_.hscroll)
|
|
{
|
|
auto sv = static_cast<int>(attributes_.hscroll->value());
|
|
if(sv != points_.offset.x)
|
|
{
|
|
points_.offset.x = sv;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void text_editor::_m_on_scroll(const arg_mouse& arg)
|
|
{
|
|
if((arg.evt_code == event_code::mouse_move) && (arg.left_button == false))
|
|
return;
|
|
|
|
bool vert = (attributes_.vscroll && (attributes_.vscroll->handle() == arg.window_handle));
|
|
if(_m_scroll_text(vert))
|
|
{
|
|
render(true);
|
|
reset_caret();
|
|
API::update_window(window_);
|
|
}
|
|
}
|
|
|
|
void text_editor::_m_scrollbar()
|
|
{
|
|
_m_get_scrollbar_size();
|
|
|
|
nana::size tx_area = _m_text_area();
|
|
if (text_area_.vscroll)
|
|
{
|
|
const int x = text_area_.area.x + static_cast<int>(tx_area.width);
|
|
auto wdptr = attributes_.vscroll.get();
|
|
if (!wdptr)
|
|
{
|
|
attributes_.vscroll.reset(new nana::scroll<true>);
|
|
wdptr = attributes_.vscroll.get();
|
|
wdptr->create(window_, nana::rectangle(x, text_area_.area.y, text_area_.vscroll, tx_area.height));
|
|
|
|
auto & evts = wdptr->events();
|
|
auto fn = [this](const arg_mouse& arg){
|
|
_m_on_scroll(arg);
|
|
};
|
|
evts.mouse_down(fn);
|
|
evts.mouse_move(fn);
|
|
evts.mouse_wheel([this](const arg_wheel& arg)
|
|
{
|
|
_m_on_scroll(arg);
|
|
});
|
|
API::take_active(wdptr->handle(), false, window_);
|
|
}
|
|
|
|
if (behavior_->take_lines() != wdptr->amount())
|
|
wdptr->amount(static_cast<int>(behavior_->take_lines()));
|
|
|
|
if (screen_lines() != wdptr->range())
|
|
wdptr->range(screen_lines());
|
|
|
|
if (points_.offset.y != static_cast<int>(wdptr->value()))
|
|
wdptr->value(points_.offset.y);
|
|
|
|
wdptr->move(rectangle{ x, text_area_.area.y, text_area_.vscroll, tx_area.height });
|
|
}
|
|
else
|
|
attributes_.vscroll.reset();
|
|
|
|
//HScroll
|
|
if(text_area_.hscroll)
|
|
{
|
|
auto wdptr = attributes_.hscroll.get();
|
|
int y = text_area_.area.y + static_cast<int>(tx_area.height);
|
|
if(nullptr == wdptr)
|
|
{
|
|
attributes_.hscroll.reset(new nana::scroll<false>);
|
|
wdptr = attributes_.hscroll.get();
|
|
wdptr->create(window_, nana::rectangle(text_area_.area.x, y, tx_area.width, text_area_.hscroll));
|
|
|
|
auto & evts = wdptr->events();
|
|
auto fn = [this](const arg_mouse& arg)
|
|
{
|
|
_m_on_scroll(arg);
|
|
};
|
|
evts.mouse_down(fn);
|
|
evts.mouse_move(fn);
|
|
evts.mouse_wheel(fn);
|
|
wdptr->step(20);
|
|
API::take_active(wdptr->handle(), false, window_);
|
|
}
|
|
auto maxline = textbase_.max_line();
|
|
nana::size text_size = _m_text_extent_size(textbase_.getline(maxline.first).c_str(), maxline.second);
|
|
|
|
text_size.width += 1;
|
|
if(text_size.width > wdptr->amount())
|
|
wdptr->amount(text_size.width);
|
|
|
|
if(tx_area.width != wdptr->range()) wdptr->range(tx_area.width);
|
|
if(points_.offset.x != static_cast<int>(wdptr->value()))
|
|
wdptr->value(points_.offset.x);
|
|
|
|
wdptr->move(rectangle{ text_area_.area.x, y, tx_area.width, text_area_.hscroll });
|
|
}
|
|
else
|
|
attributes_.hscroll.reset();
|
|
}
|
|
|
|
nana::size text_editor::_m_text_area() const
|
|
{
|
|
return nana::size((text_area_.area.width > text_area_.vscroll ? text_area_.area.width - text_area_.vscroll : 0),
|
|
(text_area_.area.height > text_area_.hscroll ? text_area_.area.height - text_area_.hscroll : 0));
|
|
}
|
|
|
|
void text_editor::_m_get_scrollbar_size()
|
|
{
|
|
text_area_.hscroll = 0;
|
|
|
|
if (attributes_.line_wrapped)
|
|
{
|
|
text_area_.vscroll = text_area_.scroll_pixels;
|
|
return;
|
|
}
|
|
|
|
//Only the textbox is multi_lines, it enables the scrollbars
|
|
if(attributes_.multi_lines)
|
|
{
|
|
text_area_.vscroll = (textbase_.lines() > screen_lines() ? text_area_.scroll_pixels : 0);
|
|
|
|
std::pair<size_t, size_t> max_line = textbase_.max_line();
|
|
if(max_line.second)
|
|
{
|
|
if(points_.offset.x || _m_text_extent_size(textbase_.getline(max_line.first).c_str(), max_line.second).width > _m_text_area().width)
|
|
{
|
|
text_area_.hscroll = text_area_.scroll_pixels;
|
|
if((text_area_.vscroll == 0) && (textbase_.lines() > screen_lines()))
|
|
text_area_.vscroll = text_area_.scroll_pixels;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
text_area_.vscroll = 0;
|
|
}
|
|
|
|
void text_editor::_m_reset()
|
|
{
|
|
points_.caret.x = points_.caret.y = 0;
|
|
points_.offset.x = 0;
|
|
_m_offset_y(0);
|
|
select_.a = select_.b;
|
|
}
|
|
|
|
nana::upoint text_editor::_m_put(nana::string text)
|
|
{
|
|
auto crtpos = points_.caret;
|
|
std::vector<std::pair<std::size_t, std::size_t>> lines;
|
|
if (_m_resolve_text(text, lines) && attributes_.multi_lines)
|
|
{
|
|
nana::string str_orig = textbase_.getline(crtpos.y);
|
|
auto x_orig = crtpos.x;
|
|
|
|
auto subpos = lines.front();
|
|
auto substr = text.substr(subpos.first, subpos.second - subpos.first);
|
|
|
|
if (str_orig.size() == x_orig)
|
|
textbase_.insert(crtpos, std::move(substr));
|
|
else
|
|
textbase_.replace(crtpos.y, str_orig.substr(0, x_orig) + substr);
|
|
|
|
//There are at least 2 elements in lines
|
|
for (auto i = lines.begin() + 1, end = lines.end() - 1; i != end; ++i)
|
|
{
|
|
textbase_.insertln(++crtpos.y, text.substr(i->first, i->second - i->first));
|
|
}
|
|
|
|
auto backpos = lines.back();
|
|
textbase_.insertln(++crtpos.y, text.substr(backpos.first, backpos.second - backpos.first) + str_orig.substr(x_orig));
|
|
crtpos.x = static_cast<decltype(crtpos.x)>(backpos.second - backpos.first);
|
|
|
|
const auto width_px = width_pixels();
|
|
behavior_->add_lines(points_.caret.y, lines.size() - 1);
|
|
const auto endline = points_.caret.y + lines.size();
|
|
for (auto i = points_.caret.y; i < endline; ++i)
|
|
behavior_->pre_calc_line(i, width_px);
|
|
}
|
|
else
|
|
{
|
|
//Just insert the first line of text if the text is multilines.
|
|
if (lines.size() > 1)
|
|
text = text.substr(lines.front().first, lines.front().second - lines.front().first);
|
|
|
|
auto length = text.size();
|
|
textbase_.insert(crtpos, std::move(text));
|
|
crtpos.x += static_cast<unsigned>(length);
|
|
behavior_->pre_calc_line(crtpos.y, width_pixels());
|
|
}
|
|
return crtpos;
|
|
}
|
|
|
|
nana::upoint text_editor::_m_erase_select()
|
|
{
|
|
nana::upoint a, b;
|
|
if (_m_get_sort_select_points(a, b))
|
|
{
|
|
if(a.y != b.y)
|
|
{
|
|
textbase_.erase(a.y, a.x, nana::string::npos);
|
|
|
|
textbase_.erase(a.y + 1, b.y - a.y - 1);
|
|
|
|
textbase_.erase(a.y + 1, 0, b.x);
|
|
textbase_.merge(a.y);
|
|
|
|
behavior_->merge_lines(a.y, b.y);
|
|
}
|
|
else
|
|
{
|
|
textbase_.erase(a.y, a.x, b.x - a.x);
|
|
behavior_->pre_calc_line(a.y, width_pixels());
|
|
}
|
|
|
|
select_.a = select_.b;
|
|
return a;
|
|
}
|
|
|
|
return points_.caret;
|
|
}
|
|
|
|
bool text_editor::_m_make_select_string(nana::string& text) const
|
|
{
|
|
nana::upoint a, b;
|
|
if (!_m_get_sort_select_points(a, b))
|
|
return false;
|
|
|
|
if(a.y != b.y)
|
|
{
|
|
text = textbase_.getline(a.y).substr(a.x);
|
|
text += STR("\r\n");
|
|
for(unsigned i = a.y + 1; i < b.y; ++i)
|
|
{
|
|
text += textbase_.getline(i);
|
|
text += STR("\r\n");
|
|
}
|
|
text += textbase_.getline(b.y).substr(0, b.x);
|
|
}
|
|
else
|
|
text = textbase_.getline(a.y).substr(a.x, b.x - a.x);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool text_editor::_m_resolve_text(const nana::string& text, std::vector<std::pair<std::size_t, std::size_t>> & lines)
|
|
{
|
|
std::size_t begin = 0;
|
|
while (true)
|
|
{
|
|
auto pos = text.find_first_of(STR("\r\n"), begin);
|
|
if (text.npos == pos)
|
|
{
|
|
if (!lines.empty())
|
|
lines.emplace_back(begin, text.size());
|
|
break;
|
|
}
|
|
|
|
lines.emplace_back(begin, pos);
|
|
begin = text.find_first_not_of(STR("\r\n"), pos + 1);
|
|
|
|
//The number of new lines minus one
|
|
auto n = std::count(text.data() + pos, text.data() + (begin == text.npos ? text.size() : begin), '\n') - 1;
|
|
for (decltype(n) i = 0; i < n; ++i)
|
|
lines.emplace_back(0, 0);
|
|
|
|
if (text.npos == begin)
|
|
{
|
|
lines.emplace_back(0, 0);
|
|
break;
|
|
}
|
|
}
|
|
return !lines.empty();
|
|
}
|
|
|
|
bool text_editor::_m_cancel_select(int align)
|
|
{
|
|
nana::upoint a, b;
|
|
if(_m_get_sort_select_points(a, b))
|
|
{
|
|
switch(align)
|
|
{
|
|
case 1:
|
|
points_.caret = a;
|
|
_m_move_offset_x_while_over_border(-2);
|
|
break;
|
|
case 2:
|
|
points_.caret = b;
|
|
_m_move_offset_x_while_over_border(2);
|
|
break;
|
|
}
|
|
select_.a = select_.b = points_.caret;
|
|
reset_caret();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
unsigned text_editor::_m_tabs_pixels(size_type tabs) const
|
|
{
|
|
if(0 == tabs) return 0;
|
|
|
|
nana::char_t ws[2] = {};
|
|
ws[0] = mask_char_ ? mask_char_ : ' ';
|
|
return static_cast<unsigned>(tabs * graph_.text_extent_size(ws).width * text_area_.tab_space);
|
|
}
|
|
|
|
nana::size text_editor::_m_text_extent_size(const char_type* str) const
|
|
{
|
|
return _m_text_extent_size(str, nana::strlen(str));
|
|
}
|
|
|
|
nana::size text_editor::_m_text_extent_size(const char_type* str, size_type n) const
|
|
{
|
|
if(graph_)
|
|
{
|
|
if(mask_char_)
|
|
{
|
|
nana::string maskstr;
|
|
maskstr.append(n, mask_char_);
|
|
return graph_.text_extent_size(maskstr);
|
|
}
|
|
else
|
|
return graph_.text_extent_size(str, static_cast<unsigned>(n));
|
|
}
|
|
return{};
|
|
}
|
|
|
|
//_m_move_offset_x_while_over_border
|
|
//@brief: Move the view window
|
|
bool text_editor::_m_move_offset_x_while_over_border(int many)
|
|
{
|
|
//x never beyonds border in line-wrapped mode.
|
|
if (attributes_.line_wrapped || (0 == many))
|
|
return false;
|
|
|
|
const string_type& lnstr = textbase_.getline(points_.caret.y);
|
|
unsigned width = _m_text_extent_size(lnstr.c_str(), points_.caret.x).width;
|
|
|
|
const auto count = static_cast<unsigned>(std::abs(many));
|
|
if(many < 0)
|
|
{
|
|
if(points_.offset.x && (points_.offset.x >= static_cast<int>(width)))
|
|
{ //Out of screen text area
|
|
if(points_.caret.x > count)
|
|
points_.offset.x = static_cast<int>(width - _m_text_extent_size(lnstr.c_str() + points_.caret.x - count, count).width);
|
|
else
|
|
points_.offset.x = 0;
|
|
return true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
width += text_area_.area.x;
|
|
if(static_cast<int>(width) - points_.offset.x >= _m_endx())
|
|
{ //Out of screen text area
|
|
points_.offset.x = width - _m_endx() + 1;
|
|
string_type::size_type rest_size = lnstr.size() - points_.caret.x;
|
|
points_.offset.x += static_cast<int>(_m_text_extent_size(lnstr.c_str() + points_.caret.x, (rest_size >= static_cast<unsigned>(many) ? static_cast<unsigned>(many) : rest_size)).width);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool text_editor::_m_move_select(bool record_undo)
|
|
{
|
|
nana::upoint caret = points_.caret;
|
|
nana::string text;
|
|
if (_m_make_select_string(text))
|
|
{
|
|
auto undo_ptr = std::unique_ptr<undo_move_text>(new undo_move_text(*this));
|
|
undo_ptr->set_selected_text();
|
|
|
|
nana::upoint a, b;
|
|
_m_get_sort_select_points(a, b);
|
|
if (caret.y < a.y || (caret.y == a.y && caret.x < a.x))
|
|
{//forward
|
|
_m_erase_select();
|
|
|
|
undo_ptr->set_caret_pos();
|
|
_m_put(text);
|
|
|
|
select_.a = caret;
|
|
select_.b.y = b.y + (caret.y - a.y);
|
|
}
|
|
else if (b.y < caret.y || (caret.y == b.y && b.x < caret.x))
|
|
{
|
|
undo_ptr->set_caret_pos();
|
|
_m_put(text);
|
|
_m_erase_select();
|
|
|
|
select_.b.y = caret.y;
|
|
select_.a.y = caret.y - (b.y - a.y);
|
|
select_.a.x = caret.x - (caret.y == b.y ? (b.x - a.x) : 0);
|
|
}
|
|
select_.b.x = b.x + (a.y == b.y ? (select_.a.x - a.x) : 0);
|
|
|
|
if (record_undo)
|
|
{
|
|
undo_ptr->set_destination(select_.a, select_.b);
|
|
undo_.push(std::move(undo_ptr));
|
|
}
|
|
|
|
points_.caret = select_.a;
|
|
reset_caret();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
int text_editor::_m_text_top_base() const
|
|
{
|
|
if(false == attributes_.multi_lines)
|
|
{
|
|
unsigned px = line_height();
|
|
if(text_area_.area.height > px)
|
|
return text_area_.area.y + static_cast<int>((text_area_.area.height - px) >> 1);
|
|
}
|
|
return text_area_.area.y;
|
|
}
|
|
|
|
//_m_endx
|
|
//@brief: Get the right point of text area
|
|
int text_editor::_m_endx() const
|
|
{
|
|
return static_cast<int>(text_area_.area.x + text_area_.area.width - text_area_.vscroll);
|
|
}
|
|
|
|
//_m_endy
|
|
//@brief: Get the bottom point of text area
|
|
int text_editor::_m_endy() const
|
|
{
|
|
return static_cast<int>(text_area_.area.y + text_area_.area.height - text_area_.hscroll);
|
|
}
|
|
|
|
void text_editor::_m_draw_tip_string() const
|
|
{
|
|
graph_.string(text_area_.area.x - points_.offset.x, text_area_.area.y, 0x787878, attributes_.tip_string);
|
|
}
|
|
|
|
void text_editor::_m_draw_string(int top, nana::color_t color, const nana::upoint& str_pos, const nana::string& linestr, bool if_mask) const
|
|
{
|
|
int x = text_area_.area.x - points_.offset.x;
|
|
int xend = text_area_.area.x + static_cast<int>(text_area_.area.width);
|
|
|
|
if (if_mask && mask_char_)
|
|
{
|
|
nana::string maskstr;
|
|
maskstr.append(linestr.size(), mask_char_);
|
|
graph_.string(x, top, color, maskstr);
|
|
return;
|
|
}
|
|
|
|
unicode_bidi bidi;
|
|
std::vector<unicode_bidi::entity> reordered;
|
|
bidi.linestr(linestr.c_str(), linestr.size(), reordered);
|
|
|
|
auto whitespace_w = graph_.text_extent_size(STR(" "), 1).width;
|
|
|
|
const auto line_h_pixels = line_height();
|
|
|
|
//The line of text is in the range of selection
|
|
nana::upoint a, b;
|
|
|
|
//The text is not selected or the whole line text is selected
|
|
if ((!_m_get_sort_select_points(a, b)) || (select_.a.y != str_pos.y && select_.b.y != str_pos.y))
|
|
{
|
|
bool selected = (a.y < str_pos.y && str_pos.y < b.y);
|
|
for (auto & ent : reordered)
|
|
{
|
|
std::size_t len = ent.end - ent.begin;
|
|
unsigned str_w = graph_.text_extent_size(ent.begin, len).width;
|
|
|
|
if ((x + static_cast<int>(str_w) > text_area_.area.x) && (x < xend))
|
|
{
|
|
if (selected)
|
|
{
|
|
color = 0xFFFFFF;
|
|
graph_.rectangle(x, top, str_w, line_h_pixels, 0x3399FF, true);
|
|
}
|
|
|
|
graph_.string(x, top, color, ent.begin, len);
|
|
}
|
|
x += static_cast<int>(str_w);
|
|
}
|
|
if (selected)
|
|
graph_.rectangle(x, top, whitespace_w, line_h_pixels, 0x3399FF, true);
|
|
}
|
|
else
|
|
{
|
|
auto rtl_string = [this,line_h_pixels](point strpos, nana::color_t color, const nana::char_t* str, std::size_t len, std::size_t str_px, unsigned glyph_front, unsigned glyph_selected){
|
|
graph_.string(strpos.x, strpos.y, color, str, len);
|
|
paint::graphics graph(glyph_selected, line_h_pixels);
|
|
graph.typeface(this->graph_.typeface());
|
|
graph.rectangle(0x3399FF, true);
|
|
|
|
int sel_xpos = static_cast<int>(str_px - (glyph_front + glyph_selected));
|
|
graph.string(-sel_xpos, 0, 0xFFFFFF, str, len);
|
|
graph_.bitblt(nana::rectangle(strpos.x + sel_xpos, strpos.y, glyph_selected, line_h_pixels), graph);
|
|
};
|
|
|
|
const nana::char_t * strbeg = linestr.c_str();
|
|
if (a.y == b.y)
|
|
{
|
|
for (auto & ent : reordered)
|
|
{
|
|
std::size_t len = ent.end - ent.begin;
|
|
unsigned str_w = graph_.text_extent_size(ent.begin, len).width;
|
|
if ((x + static_cast<int>(str_w) > text_area_.area.x) && (x < xend))
|
|
{
|
|
std::size_t pos = ent.begin - strbeg + str_pos.x;
|
|
|
|
if (pos + len <= a.x || pos >= b.x)
|
|
{
|
|
//NOT selected
|
|
graph_.string(x, top, color, ent.begin, len);
|
|
}
|
|
else if (a.x <= pos && pos + len <= b.x)
|
|
{
|
|
//Whole selected
|
|
graph_.rectangle(x, top, str_w, line_h_pixels, 0x3399FF, true);
|
|
graph_.string(x, top, 0xFFFFFF, ent.begin, len);
|
|
}
|
|
else if (pos <= a.x && a.x < pos + len)
|
|
{ //Partial selected
|
|
int endpos = static_cast<int>(b.x < pos + len ? b.x : pos + len);
|
|
std::unique_ptr<unsigned> pxbuf_ptr(new unsigned[len]);
|
|
unsigned * pxbuf = pxbuf_ptr.get();
|
|
if (graph_.glyph_pixels(ent.begin, len, pxbuf))
|
|
{
|
|
auto head_w = std::accumulate(pxbuf, pxbuf + (a.x - pos), unsigned());
|
|
auto sel_w = std::accumulate(pxbuf + (a.x - pos), pxbuf + (endpos - pos), unsigned());
|
|
|
|
if (_m_is_right_text(ent))
|
|
{ //RTL
|
|
rtl_string(point{x, top}, color, ent.begin, len, str_w, head_w, sel_w);
|
|
}
|
|
else
|
|
{ //LTR
|
|
graph_.string(x, top, color, ent.begin, a.x - pos);
|
|
|
|
graph_.rectangle(x + head_w, top, sel_w, line_h_pixels, 0x3399FF, true);
|
|
graph_.string(x + head_w, top, 0xFFFFFF, ent.begin + (a.x - pos), endpos - a.x);
|
|
|
|
if (static_cast<size_t>(endpos) < pos + len)
|
|
graph_.string(x + static_cast<int>(head_w + sel_w), top, color, ent.begin + (endpos - pos), pos + len - endpos);
|
|
}
|
|
}
|
|
}
|
|
else if (pos <= b.x && b.x < pos + len)
|
|
{ //Partial selected
|
|
int endpos = b.x;
|
|
unsigned sel_w = graph_.glyph_extent_size(ent.begin, len, 0, endpos - pos).width;
|
|
if (_m_is_right_text(ent))
|
|
{ //RTL
|
|
rtl_string(point{x, top}, color, ent.begin, len, str_w, 0, sel_w);
|
|
}
|
|
else
|
|
{ //LTR
|
|
graph_.rectangle(x, top, sel_w, line_h_pixels, 0x3399FF, true);
|
|
graph_.string(x, top, 0xFFFFFF, ent.begin, endpos - pos);
|
|
graph_.string(x + sel_w, top, color, ent.begin + (endpos - pos), pos + len - endpos);
|
|
}
|
|
}
|
|
}
|
|
x += static_cast<int>(str_w);
|
|
}
|
|
}
|
|
else if (a.y == str_pos.y)
|
|
{
|
|
for (auto & ent : reordered)
|
|
{
|
|
std::size_t len = ent.end - ent.begin;
|
|
unsigned str_w = graph_.text_extent_size(ent.begin, len).width;
|
|
if ((x + static_cast<int>(str_w) > text_area_.area.x) && (x < xend))
|
|
{
|
|
std::size_t pos = ent.begin - strbeg + str_pos.x;
|
|
if (pos + len <= a.x)
|
|
{
|
|
//Not selected
|
|
graph_.string(x, top, color, ent.begin, len);
|
|
}
|
|
else if (a.x < pos)
|
|
{
|
|
//Whole selected
|
|
graph_.rectangle(x, top, str_w, line_h_pixels, 0x3399FF, true);
|
|
graph_.string(x, top, 0xFFFFFF, ent.begin, len);
|
|
}
|
|
else
|
|
{
|
|
unsigned head_w = graph_.glyph_extent_size(ent.begin, len, 0, a.x - pos).width;
|
|
if (_m_is_right_text(ent))
|
|
{ //RTL
|
|
rtl_string(point{x, top}, color, ent.begin, len, str_w, head_w, str_w - head_w);
|
|
}
|
|
else
|
|
{ //LTR
|
|
graph_.string(x, top, color, ent.begin, a.x - pos);
|
|
graph_.rectangle(x + head_w, top, str_w - head_w, line_h_pixels, 0x3399FF, true);
|
|
graph_.string(x + head_w, top, 0xFFFFFF, ent.begin + a.x - pos, len - (a.x - pos));
|
|
}
|
|
}
|
|
}
|
|
|
|
x += static_cast<int>(str_w);
|
|
}
|
|
if (a.y <= static_cast<unsigned>(str_pos.y) && static_cast<unsigned>(str_pos.y) < b.y)
|
|
graph_.rectangle(x, top, whitespace_w, line_h_pixels, 0x3399FF, true);
|
|
}
|
|
else if (b.y == str_pos.y)
|
|
{
|
|
for (auto & ent : reordered)
|
|
{
|
|
std::size_t len = ent.end - ent.begin;
|
|
unsigned str_w = graph_.text_extent_size(ent.begin, len).width;
|
|
if ((x + static_cast<int>(str_w) > text_area_.area.x) && (x < xend))
|
|
{
|
|
std::size_t pos = ent.begin - strbeg + str_pos.x;
|
|
|
|
if (pos + len <= b.x)
|
|
{
|
|
graph_.rectangle(x, top, str_w, line_h_pixels, 0x3399FF, true);
|
|
graph_.string(x, top, 0xFFFFFF, ent.begin, len);
|
|
}
|
|
else if (pos <= b.x && b.x < pos + len)
|
|
{
|
|
unsigned sel_w = graph_.glyph_extent_size(ent.begin, len, 0, b.x - pos).width;
|
|
if (_m_is_right_text(ent))
|
|
{ //RTL
|
|
rtl_string(point{x, top}, color, ent.begin, len,str_w, 0, sel_w);
|
|
}
|
|
else
|
|
{
|
|
graph_.rectangle(x, top, sel_w, line_h_pixels, 0x3399FF, true);
|
|
graph_.string(x, top, 0xFFFFFF, ent.begin, b.x - pos);
|
|
graph_.string(x + sel_w, top, color, ent.begin + b.x - pos, len - (b.x - pos));
|
|
}
|
|
}
|
|
else
|
|
graph_.string(x, top, color, ent.begin, len);
|
|
}
|
|
x += static_cast<int>(str_w);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//_m_draw
|
|
//@brief: Draw a character at a position specified by caret pos.
|
|
//@return: true if beyond the border
|
|
bool text_editor::_m_draw(nana::char_t c, std::size_t secondary_before)
|
|
{
|
|
if (false == behavior_->adjust_caret_into_screen())
|
|
{
|
|
if (behavior_->caret_to_screen(points_.caret).x < _m_endx())
|
|
{
|
|
behavior_->update_line(points_.caret.y, secondary_before);
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool text_editor::_m_get_sort_select_points(nana::upoint& a, nana::upoint& b) const
|
|
{
|
|
if (select_.a == select_.b)
|
|
return false;
|
|
|
|
if((select_.a.y > select_.b.y) || ((select_.a.y == select_.b.y) && (select_.a.x > select_.b.x)))
|
|
{
|
|
a = select_.b;
|
|
b = select_.a;
|
|
}
|
|
else
|
|
{
|
|
a = select_.a;
|
|
b = select_.b;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void text_editor::_m_offset_y(int y)
|
|
{
|
|
points_.offset.y = y;
|
|
}
|
|
|
|
unsigned text_editor::_m_char_by_pixels(const nana::char_t* str, std::size_t len, unsigned * pxbuf, int str_px, int pixels, bool is_rtl)
|
|
{
|
|
unsigned pos = 0; //Result
|
|
if (graph_.glyph_pixels(str, len, pxbuf))
|
|
{
|
|
if (is_rtl)
|
|
{ //RTL
|
|
for (std::size_t u = 0; u < len; ++u)
|
|
{
|
|
int chbeg = (str_px - pxbuf[u]);
|
|
if (chbeg <= pixels && pixels < str_px)
|
|
{
|
|
pos = static_cast<unsigned>(u);
|
|
if ((pxbuf[u] <= 1) || (pixels <= chbeg + static_cast<int>(pxbuf[u] >> 1)))
|
|
++pos;
|
|
break;
|
|
}
|
|
str_px -= pxbuf[u];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
//LTR
|
|
for (std::size_t u = 0; u < len; ++u)
|
|
{
|
|
if (pixels < static_cast<int>(pxbuf[u]))
|
|
{
|
|
pos = static_cast<unsigned>(u);
|
|
if ((pxbuf[u] > 1) && (pixels > static_cast<int>(pxbuf[u] >> 1)))
|
|
++pos;
|
|
|
|
break;
|
|
}
|
|
pixels -= static_cast<int>(pxbuf[u]);
|
|
}
|
|
}
|
|
}
|
|
return pos;
|
|
}
|
|
|
|
unsigned text_editor::_m_pixels_by_char(const nana::string& lnstr, std::size_t pos) const
|
|
{
|
|
unicode_bidi bidi;
|
|
std::vector<unicode_bidi::entity> reordered;
|
|
bidi.linestr(lnstr.c_str(), lnstr.size(), reordered);
|
|
|
|
const nana::char_t * ch = (pos <= lnstr.size() ? lnstr.c_str() + pos : nullptr);
|
|
|
|
std::size_t pxbuf_size = 0;
|
|
std::unique_ptr<unsigned[]> pxbuf;
|
|
|
|
unsigned text_w = 0;
|
|
for (auto & ent : reordered)
|
|
{
|
|
std::size_t len = ent.end - ent.begin;
|
|
if (ent.begin <= ch && ch <= ent.end)
|
|
{
|
|
if (_m_is_right_text(ent))
|
|
{
|
|
//RTL
|
|
if (len > pxbuf_size)
|
|
{
|
|
pxbuf.reset(new unsigned[len]);
|
|
pxbuf_size = len;
|
|
}
|
|
|
|
graph_.glyph_pixels(ent.begin, len, pxbuf.get());
|
|
text_w = std::accumulate(pxbuf.get() + (ch - ent.begin), pxbuf.get() + len, text_w);
|
|
}
|
|
else
|
|
{
|
|
//LTR
|
|
text_w += _m_text_extent_size(ent.begin, ch - ent.begin).width;
|
|
}
|
|
break;
|
|
}
|
|
else
|
|
text_w += _m_text_extent_size(ent.begin, len).width;
|
|
}
|
|
return text_w;
|
|
}
|
|
|
|
bool text_editor::_m_is_right_text(const unicode_bidi::entity& e)
|
|
{
|
|
return ((e.bidi_char_type != unicode_bidi::bidi_char::L) && (e.level & 1));
|
|
}
|
|
|
|
//end class text_editor
|
|
}//end namespace skeletons
|
|
}//end namespace widgets
|
|
}//end namespace nana
|
|
|