CheckBoxStyle.h

/* Copyright (C) 2016 Laurentiu-Gheorghe Crisan
   Copyright (C) 2016 Marc Boris Duerner
 
 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_CheckBoxStyle_h
#define Pt_Forms_CheckBoxStyle_h
 
#include <Pt/Forms/Style.h>
 
namespace Pt {
 
namespace Forms {
 
class PT_FORMS_API CheckBoxStyleOptions
{
    public:
        CheckBoxStyleOptions();
 
        bool hasOverrides() const;
 
        std::size_t generation() const;
 
        const Gfx::Brush* background() const;
 
        void setBackground(const Gfx::Brush& brush);
 
        const Gfx::Pen* contour() const;
 
        void setContour(const Gfx::Pen& pen);
 
        const Gfx::Color* textColor() const;
 
        void setTextColor(const Gfx::Color& color);
 
        const 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);
 
        Gfx::Font getFont(const Gfx::Font& base) const;
 
    private:
        enum StyleOverride
        {
            Background = 0x01,
            Contour    = 0x02,
            TextColor  = 0x04,
            Font       = 0x08
        };
 
        bool hasOverride(StyleOverride mask) const;
 
        void setOverride(StyleOverride mask);
 
    private:
        AutoPtr<Gfx::Brush> _background;
        AutoPtr<Gfx::Pen>   _contour;
        AutoPtr<Gfx::Color> _textColor;
        FontOption          _font;
        std::size_t         _generation;
        unsigned            _overrides;
};
 
class PT_FORMS_API CheckBoxState
{
    public:
        CheckBoxState();
 
        bool isEnabled() const;
 
        void setEnabled(bool value);
 
        bool isHovered() const;
 
        void setHovered(bool value);
 
        bool isFocused() const;
 
        void setFocused(bool value);
 
        bool isChecked() const;
 
        void setChecked(bool value);
 
    private:
        bool _enabled;
        bool _hovered;
        bool _focused;
        bool _checked;
};
 
class PT_FORMS_API CheckBoxRenderer : public Style::Facet
{
    public:
        explicit CheckBoxRenderer(std::size_t refs = 0);
 
        virtual ~CheckBoxRenderer();
 
        CheckBoxRenderer* create() const;
 
        void prepare(const StyleOptions& options,
                     const CheckBoxStyleOptions& checkBoxOptions);
 
    public:
        Gfx::SizeF measureIndicator(PaintSurface& surface);
 
        Gfx::SizeF measureContent(PaintSurface& surface,
                                  const Gfx::SizeF& indicatorSize,
                                  const Gfx::SizeF& textSize);
 
        Gfx::SizeF measureFrame(PaintSurface& surface,
                                const Gfx::SizeF& contentSize);
 
        Gfx::RectF layoutFrame(PaintSurface& surface,
                               const Gfx::RectF& frameRect);
 
        void layoutContent(PaintSurface& surface,
                           const Gfx::RectF& contentRect,
                           const Gfx::SizeF& indicatorSize,
                           const Gfx::SizeF& textSize,
                           Gfx::RectF& indicatorRect,
                           Gfx::RectF& textRect);
 
        Gfx::RectF layoutMnemonic(PaintSurface& surface,
                                  const String& text,
                                  const Gfx::PointF& textPos,
                                  const Gfx::FontMetrics& fontMetrics,
                                  String::size_type mnemonicIndex);
 
        const Painter& textPainter(PaintSurface& surface);
 
        void renderChrome(PaintContext& context,
                          const Gfx::RectF& rect,
                          const Gfx::RectF& boxRect,
                          const CheckBoxState& state);
 
        void renderText(PaintContext& context,
                        const Gfx::RectF& textRect,
                        const String& text,
                        const Gfx::PointF& pos,
                        const CheckBoxState& state);
 
        void renderMnemonic(PaintContext& context,
                            const Gfx::RectF& rect,
                            const Gfx::RectF& mnemonic,
                            const CheckBoxState& state);
 
    protected:
        virtual void onReset(const StyleOptions& options);
 
        virtual CheckBoxRenderer* onCreate() const = 0;
 
        virtual void onPrepare(const StyleOptions& options,
                               const CheckBoxStyleOptions& checkBoxOptions) = 0;
 
        virtual Gfx::SizeF onMeasureIndicator(PaintSurface& surface) = 0;
 
        virtual Gfx::SizeF onMeasureContent(PaintSurface& surface,
                                            const Gfx::SizeF& indicatorSize,
                                            const Gfx::SizeF& textSize) = 0;
 
        virtual Gfx::SizeF onMeasureFrame(PaintSurface& surface,
                                          const Gfx::SizeF& contentSize) = 0;
 
        virtual Gfx::RectF onLayoutFrame(PaintSurface& surface,
                                         const Gfx::RectF& frameRect) = 0;
 
        virtual void onLayoutContent(PaintSurface& surface,
                                     const Gfx::RectF& contentRect,
                                     const Gfx::SizeF& indicatorSize,
                                     const Gfx::SizeF& textSize,
                                     Gfx::RectF& indicatorRect,
                                     Gfx::RectF& textRect) = 0;
 
        virtual Gfx::RectF onLayoutMnemonic(PaintSurface& surface,
                                            const String& text,
                                            const Gfx::PointF& textPos,
                                            const Gfx::FontMetrics& fontMetrics,
                                            String::size_type mnemonicIndex) = 0;
 
        virtual const Painter& onGetTextPainter(PaintSurface& surface) = 0;
 
        virtual void onRenderChrome(PaintContext& context,
                                    const Gfx::RectF& rect,
                                    const Gfx::RectF& boxRect,
                                    const CheckBoxState& state) = 0;
 
        virtual void onRenderText(PaintContext& context,
                                  const Gfx::RectF& textRect,
                                  const String& text,
                                  const Gfx::PointF& pos,
                                  const CheckBoxState& state) = 0;
 
        virtual void onRenderMnemonic(PaintContext& context,
                                      const Gfx::RectF& rect,
                                      const Gfx::RectF& mnemonic,
                                      const CheckBoxState& state) = 0;
};
 
class PT_FORMS_API CheckBoxStyle : public StyleBinder<CheckBoxRenderer,
                                                      CheckBoxStyleOptions>
{
    public:
        CheckBoxStyle();
};
 
} // namespace
 
} // namespace
 
#endif