SVGTextContentElement.hpp

/*
Copyright (C) 2025,2026 Rodrigo Jose Hernandez Cordoba
 
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
 
http://www.apache.org/licenses/LICENSE-2.0
 
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#ifndef AEONGUI_SVGCONTENTELEMENT_H
#define AEONGUI_SVGCONTENTELEMENT_H
 
#include "SVGGraphicsElement.hpp"
#include "SVGAnimatedLength.hpp"
#include "SVGAnimatedEnumeration.hpp"
#include "DOMPoint.hpp"
#include "DOMRect.hpp"
#ifdef AEONGUI_USE_SKIA
#include "aeongui/SkiaTextLayout.hpp"
#else
#include "aeongui/PangoTextLayout.hpp"
#endif
#include <memory>
 
namespace AeonGUI
{
    namespace DOM
    {
        class SVGTextContentElement : public SVGGraphicsElement
        {
        public:
            SVGTextContentElement ( const DOMString& aTagName, AttributeMap&& aAttributes, Node* aParent );
            ~SVGTextContentElement() override;
            const SVGAnimatedLength& textLength() const;
            const SVGAnimatedEnumeration& lengthAdjust() const;

            long getNumberOfChars() const;
            float getComputedTextLength() const;
            float getSubStringLength ( long start, long end ) const;
            DOMPoint getStartPositionOfChar ( long index ) const;
            DOMPoint getEndPositionOfChar ( long index ) const;
            DOMRect getExtentOfChar ( long index ) const;
            float getRotationOfChar ( long index ) const;
            long getCharNumAtPosition ( const DOMPoint& point ) const;
        protected:
#ifdef AEONGUI_USE_SKIA
            SkiaTextLayout& GetTextLayout() const;
#else
            PangoTextLayout& GetTextLayout() const;
#endif
            std::string getTextContent() const;
        private:
            void syncTextLayout() const;
 
            SVGAnimatedLength mTextLength;
            SVGAnimatedEnumeration mLengthAdjust;
#ifdef AEONGUI_USE_SKIA
            mutable SkiaTextLayout mTextLayout;
#else
            mutable PangoTextLayout mTextLayout;
#endif
        };
    }
}
#endif