label_view.h

/*
**  UICore
**  Copyright (c) 1997-2015 The UICore Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries UICore may link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Magnus Norddahl
*/

#pragma once

#include "../View/view.h"
#include "../../Display/Font/font.h"
#include "../../Core/Math/color.h"

namespace uicore
{
    enum class TextAlignment
    {
        left,
        right,
        center,
        justify/*,
        start,
        end*/
    };

    enum class LineBreakMode
    {
        //word_wrapping,
        //char_wrapping,
        clipping,
        truncating_head,
        truncating_tail,
        truncating_middle
    };

    class LabelBaseViewImpl;

    class LabelBaseView : public View
    {
    public:
        LabelBaseView();

        std::string text() const;
        void set_text(const std::string &value);

        TextAlignment text_alignment() const;
        void set_text_alignment(TextAlignment alignment);

        LineBreakMode line_break_mode() const;
        void set_line_break_mode(LineBreakMode value);

        void layout_children(const CanvasPtr &canvas) override;

    protected:
        void render_content(const CanvasPtr &canvas) override;
        float calculate_preferred_width(const CanvasPtr &canvas) override;
        float calculate_preferred_height(const CanvasPtr &canvas, float width) override;
        float calculate_first_baseline_offset(const CanvasPtr &canvas, float width) override;
        float calculate_last_baseline_offset(const CanvasPtr &canvas, float width) override;

    private:
        std::shared_ptr<LabelBaseViewImpl> impl;
    };

}