LineEdit.h

/* Copyright (C) 2015 Marc Boris Duerner
   Copyright (C) 2015 Laurentiu-Gheorghe Crisan
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  As a special exception, you may use this file as part of a free
  software library without restriction. Specifically, if other files
  instantiate templates or use macros or inline functions from this
  file, or you compile this file and link it with other files to
  produce an executable, this file does not by itself cause the
  resulting executable to be covered by the GNU General Public
  License. This exception does not however invalidate any other
  reasons why the executable file might be covered by the GNU Library
  General Public License.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  MA 02110-1301 USA
*/
 
#ifndef PT_FORMS_LINEEDIT_H
#define PT_FORMS_LINEEDIT_H
 
#include <Pt/Forms/Control.h>
#include <Pt/Forms/LineEditStyler.h>
#include <Pt/Forms/LineEditor.h>
#include <Pt/Forms/Adjustment.h>
#include <Pt/SmartPtr.h>
#include <Pt/String.h>
 
namespace Pt {
 
namespace Forms {

class PT_FORMS_API LineEdit : public Control
{
    public:
        typedef Control Base;

        enum EchoMode
        {
            Normal = 0,

            Hidden = 1,

            Masked = 2
        };
 
    public:
        LineEdit();

        ~LineEdit();

        bool isEditable() const;

        void setEditable(bool e);

        const Pt::String& text() const;

        void setText(const Pt::String& str);

        bool isEmpty() const;

        const Pt::String& displayText() const;

        const Pt::String& placeholderText() const;

        void setPlaceholderText(const Pt::String& s);

        EchoMode echoMode() const;

        void setEchoMode(EchoMode mode);

        Adjustment textAdjustment() const;

        void setTextAdjustment(Adjustment a);

        std::size_t cursorPosition() const;

        void setCursorPosition(std::size_t n);

        bool isAccepted() const;

        void setAccepted(bool a);

        bool isHighlighted() const;

        Pt::Signal<const Pt::String&>& textEdited();

        Pt::Signal<const Pt::String&>& returnPressed();

        Pt::Signal<const Pt::String&>& editingFinished();
 
    public:
        const Gfx::Brush& background() const;

        void setBackground(const Gfx::Brush& b);

        const Gfx::Pen& contour() const;

        void setContour(const Gfx::Pen& p);

        const Gfx::Color& textColor() const;

        void setTextColor(const Gfx::Color& color);

        Gfx::Font font() const;

        void setFont(const Gfx::Font& font);

        void setFontSize(std::size_t size);

        void setFontWeight(Gfx::Font::Weight weight);

        void setFontSlant(Gfx::Font::Slant slant);

        void setRenderer(LineEditRenderer* renderer);

        LineEditState lineEditState() const;
 
    protected:
        virtual Gfx::SizeF onMeasure(const SizePolicy& policy);

        virtual void onLayout(const Gfx::RectF& rect);

        virtual void onInvalidate();

        virtual void onPaint(PaintContext& context, const Gfx::RectF& rect);

        virtual void onPaintChrome(PaintContext& context,
                                   const Gfx::RectF& rect,
                                   const Gfx::RectF& textRect,
                                   const String& text,
                                   const Gfx::PointF& textPos,
                                   const Gfx::RectF& cursor,
                                   const Gfx::RectF& selection,
                                   const LineEditState& state);
 
    protected:
        virtual bool onEnterEvent(const EnterEvent& ev);

        virtual bool onLeaveEvent(const LeaveEvent& ev);

        virtual bool onKeyEvent(const KeyEvent& ev);

        virtual bool onMouseEvent(const MouseEvent& ev);

        virtual bool onTouchEvent(const TouchEvent& ev);

        virtual void onResizeEvent(const ResizeEvent& ev);

        virtual void onFocusEvent(const FocusEvent& ev);
 
    private:
        Pt::Signal<const Pt::String&> _textEdited;
        Pt::Signal<const Pt::String&> _returnPressed;
        Pt::Signal<const Pt::String&> _editingFinished;
 
        LineEditor                    _editor;
        TextLine                      _line;
        Pt::String                    _placeholderText;
        bool                          _isEditable;
        bool                          _isAccepted;
        bool                          _isTextChanged;
        bool                          _isHighlighted;
        double                        _pendingCursorX;
        EchoMode                      _echoMode;
        double                        _spacing;
 
        LineEditStyler                 _styler;
 
        Gfx::RectF                    _textRect;
        Gfx::RectF                    _cursorRect;
};
 
} // namespace
 
} // namespace
 
#endif