CGUIEditBox.hpp

// Copyright (C) 2002-2015 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
 
#ifndef __C_GUI_EDIT_BOX_H_INCLUDED__
#define __C_GUI_EDIT_BOX_H_INCLUDED__
 
#include "IrrCompileConfig.h"
#include "IGUIEditBox.h"
#include "irrArray.h"
#include "IOSOperator.h"
#include "utils/leak_check.hpp"
 
#include "GlyphLayout.h"
 
#include <cstdint>
#include <string>
#include <vector>
 
#if !defined(SERVER_ONLY) && defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
#include "SDL_events.h"
#endif
 
using namespace irr;
using namespace gui;
 
namespace GUIEngine
{
    enum TextBoxType: int;
}
 
    class CGUIEditBox : public IGUIEditBox
    {
    public:
 
        LEAK_CHECK()
 
        
        CGUIEditBox(const wchar_t* text, bool border, IGUIEnvironment* environment,
            IGUIElement* parent, s32 id, const core::rect<s32>& rectangle);
 
        virtual ~CGUIEditBox();
 
        virtual void setOverrideFont(IGUIFont* font=0);
 
        virtual void setOverrideColor(video::SColor color);
 
        virtual video::SColor getOverrideColor() const;
 
        virtual void enableOverrideColor(bool enable);
 
 
        virtual bool isOverrideColorEnabled(void) const;
 
        virtual void setDrawBorder(bool border);
 
        virtual void setWordWrap(bool enable) {}
 
        virtual bool isWordWrapEnabled() const { return false; }
 
 
        virtual void setMultiLine(bool enable) {}
 
        virtual bool isMultiLineEnabled() const { return false; }
 
        virtual void setAutoScroll(bool enable);
 
        virtual bool isAutoScrollEnabled() const;
 
        virtual core::dimension2du getTextDimension();
 
        virtual void setTextAlignment(EGUI_ALIGNMENT horizontal, EGUI_ALIGNMENT vertical);
 
        virtual bool OnEvent(const SEvent& event);
 
        virtual void draw();
 
        virtual void setText(const core::stringw& text);
 
        virtual void setMax(u32 max);
 
        virtual u32 getMax() const;
 
 
        virtual void setPasswordBox(bool passwordBox, wchar_t passwordChar = L'*');
 
        virtual bool isPasswordBox() const;
 
        virtual void updateAbsolutePosition();
 
        virtual void serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options) const;
 
        virtual void deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options);
 
        virtual irr::gui::IGUIFont* getOverrideFont() const { return NULL; }
        virtual irr::gui::IGUIFont* getActiveFont() const { return NULL; }
        virtual void setDrawBackground(bool) { }
 
        void fromAndroidEditText(const std::u32string& text, int start, int end,
                                 int composing_start, int composing_end);
        void openScreenKeyboard();
        s32 getCursorPosInBox() const { return m_cursor_pos; }
        s32 getTextCount() const { return (s32)m_edit_text.size(); }
        void setTextBoxType(GUIEngine::TextBoxType t) { m_type = t; }
        virtual void setComposingText(const std::u32string& ct) { m_composing_text = ct; }
        virtual void clearComposingText() { m_composing_text.clear(); }
        virtual const core::position2di& getICPos() const { return m_ic_pos; }
        void sendGuiEvent(EGUI_EVENT_TYPE type);
    protected:
        void setTextRect(s32 line);
        virtual void inputChar(char32_t c);
        void calculateScrollPos();
        void setTextMarkers(s32 begin, s32 end);
        void updateCursorDistance();
        bool processKey(const SEvent& event);
        bool processMouse(const SEvent& event);
        s32 getCursorPos(s32 x, s32 y);
        void updateGlyphLayouts();
 
        bool MouseMarking;
        bool Border;
        bool OverrideColorEnabled;
        s32 m_mark_begin;
        s32 m_mark_end;
 
        GUIEngine::TextBoxType m_type;
 
        video::SColor OverrideColor;
        gui::IGUIFont *OverrideFont, *LastBreakFont;
        IOSOperator* Operator;
 
        uint64_t m_force_show_cursor_time;
        s32 m_cursor_pos;
        s32 m_scroll_pos;
        s32 m_cursor_distance;
        u32 m_max_chars;
 
        bool AutoScroll, PasswordBox;
        char32_t PasswordChar;
        EGUI_ALIGNMENT HAlign, VAlign;
 
        core::rect<s32> CurrentTextRect, FrameRect; // temporary values
 
        s32 m_composing_start;
        s32 m_composing_end;
 
        /* UTF32 string for shaping and editing to avoid wchar_t issue in
         * windows */
        std::u32string m_edit_text;
        /* Used in windows api for native composing text handling. */
        std::u32string m_composing_text;
        std::vector<GlyphLayout> m_glyph_layouts;
        // Pre-edit surrogate chars
        std::vector<wchar_t> m_surrogate_chars;
        // Position to show composition box in native window (linux / windows)
        core::position2di m_ic_pos;
        void correctCursor(s32& cursor_pos, bool left);
        void updateSurrogatePairText();
    };
 
 
 
#endif // __C_GUI_EDIT_BOX_H_INCLUDED__