src/plugins/litehtml_viewer/litehtml/render_image.cpp

   1 #include "html.h"
   2 #include "render_image.h"
   3 #include "document.h"
   4
   5 int litehtml::render_item_image::_render(int x, int y, const containing_block_context &containing_block_size, formatting_context* fmt_ctx, bool second_pass)
   6 {
   7     int parent_width = containing_block_size.width;
   8
   9     calc_outlines(parent_width);
  10
  11     m_pos.move_to(x, y);
  12
  13     document::ptr doc = src_el()->get_document();
  14
  15     litehtml::size sz;
  16     src_el()->get_content_size(sz, containing_block_size.width);
  17
  18     m_pos.width         = sz.width;
  19     m_pos.height        = sz.height;
  20
  21     src_el()->css_w().set_line_height(height());
  22
  23     if(src_el()->css().get_height().is_predefined() && src_el()->css().get_width().is_predefined())
  24     {
  25         m_pos.height    = sz.height;
  26         m_pos.width             = sz.width;
  27
  28         // check for max-width
  29         if(!src_el()->css().get_max_width().is_predefined())
  30         {
  31             int max_width = doc->to_pixels(src_el()->css().get_max_width(), src_el()->css().get_font_size(), parent_width);
  32             if(m_pos.width > max_width)
  33             {
  34                 m_pos.width = max_width;
  35             }
  36             if(sz.width)
  37             {
  38                 m_pos.height = (int) ((float) m_pos.width * (float) sz.height / (float)sz.width);
  39             } else
  40             {
  41                 m_pos.height = sz.height;
  42             }
  43         }
  44
  45         // check for max-height
  46         if(!src_el()->css().get_max_height().is_predefined())
  47         {
  48             int max_height = calc_max_height(sz.height, containing_block_size.height);
  49             if(m_pos.height > max_height)
  50             {
  51                 m_pos.height = max_height;
  52             }
  53             if(sz.height)
  54             {
  55                 m_pos.width = (int) ((float )m_pos.height * (float)sz.width / (float)sz.height);
  56             } else
  57             {
  58                 m_pos.width = sz.width;
  59             }
  60         }
  61     } else if(!src_el()->css().get_height().is_predefined() && src_el()->css().get_width().is_predefined())
  62     {
  63         if (!get_predefined_height(m_pos.height, containing_block_size.height))
  64         {
  65             m_pos.height = (int)src_el()->css().get_height().val();
  66         }
  67
  68         // check for max-height
  69         if(!src_el()->css().get_max_height().is_predefined())
  70         {
  71             int max_height = calc_max_height(sz.height, containing_block_size.height);
  72             if(m_pos.height > max_height)
  73             {
  74                 m_pos.height = max_height;
  75             }
  76         }
  77
  78         if(sz.height)
  79         {
  80             m_pos.width = (int) ((float )m_pos.height * (float)sz.width / (float)sz.height);
  81         } else
  82         {
  83             m_pos.width = sz.width;
  84         }
  85     } else if(src_el()->css().get_height().is_predefined() && !src_el()->css().get_width().is_predefined())
  86     {
  87         m_pos.width = (int) src_el()->css().get_width().calc_percent(parent_width);
  88
  89         // check for max-width
  90         if(!src_el()->css().get_max_width().is_predefined())
  91         {
  92             int max_width = doc->to_pixels(src_el()->css().get_max_width(), src_el()->css().get_font_size(), parent_width);
  93             if(m_pos.width > max_width)
  94             {
  95                 m_pos.width = max_width;
  96             }
  97         }
  98
  99         if(sz.width)
 100         {
 101             m_pos.height = (int) ((float) m_pos.width * (float) sz.height / (float)sz.width);
 102         } else
 103         {
 104             m_pos.height = sz.height;
 105         }
 106     } else
 107     {
 108         m_pos.width             = (int) src_el()->css().get_width().calc_percent(parent_width);
 109         m_pos.height    = 0;
 110         if (!get_predefined_height(m_pos.height, containing_block_size.height))
 111         {
 112             m_pos.height = (int)src_el()->css().get_height().val();
 113         }
 114
 115         // check for max-height
 116         if(!src_el()->css().get_max_height().is_predefined())
 117         {
 118             int max_height = calc_max_height(sz.height, containing_block_size.height);
 119             if(m_pos.height > max_height)
 120             {
 121                 m_pos.height = max_height;
 122             }
 123         }
 124
 125         // check for max-height
 126         if(!src_el()->css().get_max_width().is_predefined())
 127         {
 128             int max_width = doc->to_pixels(src_el()->css().get_max_width(), src_el()->css().get_font_size(), parent_width);
 129             if(m_pos.width > max_width)
 130             {
 131                 m_pos.width = max_width;
 132             }
 133         }
 134     }
 135
 136     m_pos.x     += content_offset_left();
 137     m_pos.y += content_offset_top();
 138
 139     return m_pos.width + content_offset_left() + content_offset_right();
 140 }
 141
 142 int litehtml::render_item_image::calc_max_height(int image_height, int containing_block_height)
 143 {
 144     document::ptr doc = src_el()->get_document();
 145     return doc->to_pixels(src_el()->css().get_max_height(), src_el()->css().get_font_size(),
 146                                                   containing_block_height == 0 ? image_height : containing_block_height);
 147 }