src/plugins/litehtml_viewer/lh_widget.h

   1 /*
   2  * Claws Mail -- A GTK based, lightweight, and fast e-mail client
   3  * Copyright(C) 2019 the Claws Mail Team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write tothe Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  */
  17
  18 #include <gtk/gtk.h>
  19 #include <glib.h>
  20 #include <gio/gio.h>
  21 #include <atomic>
  22
  23 #include "procmime.h"
  24
  25 #include "container_linux.h"
  26
  27 struct pango_font
  28 {
  29         PangoFontDescription *font;
  30         bool underline;
  31         bool strikethrough;
  32 };
  33
  34 class lh_widget : public container_linux
  35 {
  36         public:
  37                 lh_widget();
  38                 ~lh_widget();
  39
  40                 GtkWidget *get_widget() const;
  41
  42                 /* Methods that litehtml calls */
  43                 void set_caption(const litehtml::tchar_t* caption);
  44                 void set_base_url(const litehtml::tchar_t* base_url);
  45                 void on_anchor_click(const litehtml::tchar_t* url, const litehtml::element::ptr& el);
  46                 void set_cursor(const litehtml::tchar_t* cursor);
  47                 void import_css(litehtml::tstring& text, const litehtml::tstring& url, litehtml::tstring& baseurl);
  48                 void get_client_rect(litehtml::position& client) const;
  49                 inline const litehtml::tchar_t *get_default_font_name() const { return m_font_name; };
  50
  51                 inline int get_default_font_size() const { return m_font_size; };
  52                 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);
  53                 void delete_font(litehtml::uint_ptr hFont);
  54                 int text_width(const litehtml::tchar_t* text, litehtml::uint_ptr hFont);
  55                 void draw_text(litehtml::uint_ptr hdc, const litehtml::tchar_t* text, litehtml::uint_ptr hFont, litehtml::web_color color, const litehtml::position& pos);
  56
  57                 void draw(cairo_t *cr);
  58                 void rerender();
  59                 void redraw();
  60                 void open_html(const gchar *contents);
  61                 void clear();
  62                 void update_cursor(const litehtml::tchar_t* cursor);
  63                 void update_font();
  64                 void print();
  65
  66                 const litehtml::tchar_t *get_href_at(litehtml::element::ptr element) const;
  67                 const litehtml::tchar_t *get_href_at(const gint x, const gint y) const;
  68                 void popup_context_menu(const litehtml::tchar_t *url, GdkEventButton *event);
  69                 const litehtml::tstring fullurl(const litehtml::tchar_t *url) const;
  70
  71                 void set_partinfo(MimeInfo *partinfo);
  72                 GdkPixbuf *get_local_image(const litehtml::tstring url) const;
  73
  74                 void set_cairo_context(cairo_t *cr);
  75
  76                 litehtml::document::ptr m_html;
  77                 litehtml::tstring m_clicked_url;
  78                 litehtml::tstring m_base_url;
  79
  80         private:
  81                 gint m_rendered_width;
  82                 GtkWidget *m_drawing_area;
  83                 GtkWidget *m_scrolled_window;
  84                 GtkWidget *m_viewport;
  85                 GtkWidget *m_context_menu;
  86                 litehtml::context m_context;
  87                 gint m_height;
  88                 litehtml::element::ptr m_over_element;
  89                 gboolean m_showing_url;
  90                 MimeInfo *m_partinfo;
  91                 cairo_t *m_cairo_context;
  92
  93                 litehtml::tchar_t *m_font_name;
  94                 int m_font_size;
  95                 std::atomic<bool> m_force_render;
  96                 std::atomic<bool> m_blank;
  97 };