container_haiku.h

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/*
 * Copyright 2019-2020 Haiku Inc.
 * All rights reserved. Distributed under the terms of the BSD 3-clause license.
 * Constributors
 * 2019-2020    Adam Fowler <adamfowleruk@gmail.com>
 */
#ifndef LITEHTMLVIEW_H
#define LITEHTMLVIEW_H
 
#include "../../include/litehtml.h"
 
#include <map>
#include <string>
 
#include <View.h>
 
class BBitmap;
 
 
enum {
    M_HTML_RENDERED = 'hrnd'
};
 
class LiteHtmlView : public BView, public litehtml::document_container
{
public:
                                        //LiteHtmlView(BMessage *archive);
                                        LiteHtmlView(BRect frame, const char *name);
                                        //LiteHtmlView(const char *name, uint32 flags, BLayout *layout=NULL);
                                
    virtual                             ~LiteHtmlView();
    
            void                        SetContext(litehtml::context* ctx);
            void                        RenderFile(const char* localFilePath);
            void                        RenderHTML(const std::string& htmlText);
            
            
    virtual litehtml::uint_ptr          create_font(const litehtml::tchar_t* faceName, int size, int weight, litehtml::font_style italic, unsigned int decoration, litehtml::font_metrics* fm) override;
    virtual void                        delete_font(litehtml::uint_ptr hFont) override;
    virtual int                         text_width(const litehtml::tchar_t* text, litehtml::uint_ptr hFont) override;
    virtual void                        draw_text(litehtml::uint_ptr hdc, const litehtml::tchar_t* text, litehtml::uint_ptr hFont, litehtml::web_color color, const litehtml::position& pos) override;
    virtual int                         pt_to_px(int pt) override;
    virtual int                         get_default_font_size() const override;
    virtual const litehtml::tchar_t*    get_default_font_name() const override;
    virtual void                        load_image(const litehtml::tchar_t* src, const litehtml::tchar_t* baseurl, bool redraw_on_ready) override;
    virtual void                        get_image_size(const litehtml::tchar_t* src, const litehtml::tchar_t* baseurl, litehtml::size& sz) override;
    virtual void                        draw_background(litehtml::uint_ptr hdc, const litehtml::background_paint& bg) override;
    virtual void                        draw_borders(litehtml::uint_ptr hdc, const litehtml::borders& borders, const litehtml::position& draw_pos, bool root) override;
    virtual void                        draw_list_marker(litehtml::uint_ptr hdc, const litehtml::list_marker& marker) override;
    virtual std::shared_ptr<litehtml::element>  create_element(const litehtml::tchar_t *tag_name,
                                                                 const litehtml::string_map &attributes,
                                                                 const std::shared_ptr<litehtml::document> &doc) override;
    virtual void                        get_media_features(litehtml::media_features& media) const override;
    //virtual void                      get_language(litehtml::tstring& language, litehtml::tstring & culture) const override;
    virtual void                        link(const std::shared_ptr<litehtml::document> &ptr, const litehtml::element::ptr& el) override;
 
 
    virtual void                        transform_text(litehtml::tstring& text, litehtml::text_transform tt) override;
    virtual void                        set_clip(const litehtml::position& pos, const litehtml::border_radiuses& bdr_radius) override;
    virtual void                        del_clip() override;
    
    // unimplemented
    virtual void                        set_caption(const char*);
    virtual void                        get_client_rect(litehtml::position& client) const;
    virtual void                        set_base_url(const char*);
    virtual void                        on_anchor_click(const char*, const litehtml::element::ptr&);
    virtual void                        set_cursor(const char*);
    virtual void                        import_css(litehtml::tstring&, const litehtml::tstring&, litehtml::tstring&);
    virtual void                        get_language(litehtml::tstring&, litehtml::tstring&) const;
    
    //BView
    virtual void                        Draw(BRect updateRect) override;
    virtual void                        GetPreferredSize(float* width, float* height) override;
    
protected:
    void                                make_url(const litehtml::tchar_t* url, const litehtml::tchar_t* basepath, litehtml::tstring& out);
    virtual void                        draw_image( litehtml::uint_ptr hdc, const litehtml::tchar_t* src, const litehtml::tchar_t* baseurl, const litehtml::position& pos );
    
private:
    litehtml::context*                  fContext;
    litehtml::document::ptr             m_html;
    std::map<const std::string,BBitmap*> m_images;
    litehtml::tstring                   m_base_url;
    litehtml::tstring                   m_url;
};
 
#endif