Implementing the litehtml

[leopck]

In order for litehtml to render/draw onto Inkplate, we need to implement the document_container.

List of functions to implement:

• 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);
• 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 void set_caption(const litehtml::tchar_t* caption) override;
• virtual void set_base_url(const litehtml::tchar_t* base_url) override;
• virtual void link(const std::shared_ptrlitehtml::document &ptr, const litehtml::element::ptr& el) override;
• virtual void on_anchor_click(const litehtml::tchar_t* url, const litehtml::element::ptr& el) override;
• virtual void set_cursor(const litehtml::tchar_t* cursor) override;
• virtual void transform_text(litehtml::tstring& text, litehtml::text_transform tt) override;
• virtual void import_css(litehtml::tstring& text, const litehtml::tstring& url, litehtml::tstring& baseurl) override;
• virtual void set_clip(const litehtml::position& pos, const litehtml::border_radiuses& bdr_radius, bool valid_x, bool valid_y) override;
• virtual void del_clip() override;
• virtual void get_client_rect(litehtml::position& client) const override;
• virtual std::shared_ptrlitehtml::element create_element(const litehtml::tchar_t *tag_name, const litehtml::string_map &attributes, const std::shared_ptrlitehtml::document &doc) override;
• virtual void get_media_features(litehtml::media_features& media) const override;

https://github.com/leopck/microbrowser/blob/master/container_esp32_inkplate.cpp

[leopck]

Examples of implementations can be viewed here: https://github.com/litehtml/litehtml/tree/master/containers