src/plugins/litehtml_viewer/container_linux.h

   1 #pragma once
   2
   3 #include <vector>
   4 #include <list>
   5 #include <string>
   6
   7 #include <cairo.h>
   8 #include <gtk/gtk.h>
   9 #include <fontconfig/fontconfig.h>
  10
  11 #include "litehtml/litehtml.h"
  12
  13 struct cairo_clip_box
  14 {
  15         typedef std::vector<cairo_clip_box> vector;
  16         litehtml::position      box;
  17         litehtml::border_radiuses radius;
  18
  19         cairo_clip_box(const litehtml::position& vBox, litehtml::border_radiuses vRad)
  20         {
  21                 box = vBox;
  22                 radius = vRad;
  23         }
  24
  25         cairo_clip_box(const cairo_clip_box& val)
  26         {
  27                 box = val.box;
  28                 radius = val.radius;
  29         }
  30         cairo_clip_box& operator=(const cairo_clip_box& val)
  31         {
  32                 box = val.box;
  33                 radius = val.radius;
  34                 return *this;
  35         }
  36 };
  37
  38 struct cairo_font
  39 {
  40         cairo_font_face_t*      font;
  41         int                                     size;
  42         bool                            underline;
  43         bool                            strikeout;
  44 };
  45
  46 class container_linux : public litehtml::document_container
  47 {
  48         typedef std::pair<litehtml::tstring, GdkPixbuf*> image;
  49         typedef std::list<image> images_map;
  50
  51 protected:
  52         cairo_surface_t*                        m_temp_surface;
  53         cairo_t*                                        m_temp_cr;
  54         images_map                                      m_images;
  55     cairo_clip_box::vector              m_clips;
  56 public:
  57         container_linux(void);
  58         virtual ~container_linux(void);
  59
  60         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;
  61         virtual void                                            delete_font(litehtml::uint_ptr hFont) override;
  62         virtual int                                             text_width(const litehtml::tchar_t* text, litehtml::uint_ptr hFont) override;
  63         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;
  64         virtual int                                             pt_to_px(int pt) override;
  65         virtual int                                             get_default_font_size() const override;
  66         virtual const litehtml::tchar_t*        get_default_font_name() const override;
  67         virtual void                                            load_image(const litehtml::tchar_t* src, const litehtml::tchar_t* baseurl, bool redraw_on_ready) override;
  68         virtual void                                            get_image_size(const litehtml::tchar_t* src, const litehtml::tchar_t* baseurl, litehtml::size& sz) override;
  69         virtual void                                            draw_background(litehtml::uint_ptr hdc, const litehtml::background_paint& bg) override;
  70         virtual void                                            draw_borders(litehtml::uint_ptr hdc, const litehtml::borders& borders, const litehtml::position& draw_pos, bool root) override;
  71         virtual void                                            draw_list_marker(litehtml::uint_ptr hdc, const litehtml::list_marker& marker) override;
  72         virtual std::shared_ptr<litehtml::element>      create_element(const litehtml::tchar_t *tag_name,
  73                                                                                                                                  const litehtml::string_map &attributes,
  74                                                                                                                                  const std::shared_ptr<litehtml::document> &doc) override;
  75         virtual void                                            get_media_features(litehtml::media_features& media) const override;
  76         virtual void                                            get_language(litehtml::tstring& language, litehtml::tstring & culture) const override;
  77         virtual void                                            link(const std::shared_ptr<litehtml::document> &ptr, const litehtml::element::ptr& el) override;
  78
  79
  80         virtual void                                            transform_text(litehtml::tstring& text, litehtml::text_transform tt) override;
  81         virtual void                                            set_clip(const litehtml::position& pos, const litehtml::border_radiuses& bdr_radius, bool valid_x, bool valid_y) override;
  82         virtual void                                            del_clip() override;
  83
  84         virtual void                                            make_url( const litehtml::tchar_t* url, const litehtml::tchar_t* basepath, litehtml::tstring& out );
  85         virtual GdkPixbuf       *get_image(const litehtml::tchar_t* url, bool redraw_on_ready) = 0;
  86
  87         void                                                            clear_images();
  88
  89         /* Trim down images cache to less than desired_size [bytes],
  90          * starting from oldest stored. */
  91         void                                                            clear_images(gint desired_size);
  92
  93 protected:
  94         virtual void                                            draw_ellipse(cairo_t* cr, int x, int y, int width, int height, const litehtml::web_color& color, int line_width);
  95         virtual void                                            fill_ellipse(cairo_t* cr, int x, int y, int width, int height, const litehtml::web_color& color);
  96         virtual void                                            rounded_rectangle( cairo_t* cr, const litehtml::position &pos, const litehtml::border_radiuses &radius );
  97
  98 private:
  99         void                                                            apply_clip(cairo_t* cr);
 100         void                                                            add_path_arc(cairo_t* cr, double x, double y, double rx, double ry, double a1, double a2, bool neg);
 101         void                                                            set_color(cairo_t* cr, litehtml::web_color color)       { cairo_set_source_rgba(cr, color.red / 255.0, color.green / 255.0, color.blue / 255.0, color.alpha / 255.0); }
 102         void                                                            draw_pixbuf(cairo_t* cr, const GdkPixbuf *bmp, int x, int y, int cx, int cy);
 103         cairo_surface_t*                                        surface_from_pixbuf(const GdkPixbuf *bmp);
 104 };