src/common/cairo.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/cairo.cpp
   3 // Purpose:     Cairo library
   4 // Author:      Anthony Betaudeau
   5 // Created:     2007-08-25
   6 // RCS-ID:      $Id: cairo.cpp 44625 2007-08-25 11:35:04Z VZ $
   7 // Copyright:   (c) Anthony Bretaudeau
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11
  12 // For compilers that support precompilation, includes "wx/wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #include "wx/cairo.h"
  20
  21 #if wxUSE_CAIRO
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/module.h"
  25     #include "wx/log.h"
  26 #endif
  27
  28
  29 wxCairoLibrary *wxCairoLibrary::ms_lib = NULL;
  30
  31 //----------------------------------------------------------------------------
  32 // wxCairoLibrary
  33 //----------------------------------------------------------------------------
  34
  35 wxCairoLibrary::wxCairoLibrary()
  36 {
  37     wxLogNull log;
  38
  39     m_libCairo.Load("libcairo.so.2");
  40     m_ok = m_libCairo.IsLoaded();
  41     if ( !m_ok )
  42         return;
  43
  44     m_libPangoCairo.Load("libpangocairo-1.0.so.0");
  45     m_ok = m_libPangoCairo.IsLoaded();
  46     if ( !m_ok )
  47     {
  48         m_libCairo.Unload();
  49         return;
  50     }
  51
  52     m_ok = InitializeMethods();
  53 }
  54
  55 wxCairoLibrary::~wxCairoLibrary()
  56 {
  57 }
  58
  59 /* static */ wxCairoLibrary* wxCairoLibrary::Get()
  60 {
  61     if ( !ms_lib )
  62     {
  63         ms_lib = new wxCairoLibrary();
  64         if ( !ms_lib->IsOk() )
  65         {
  66             delete ms_lib;
  67             ms_lib = NULL;
  68         }
  69     }
  70
  71     return ms_lib;
  72 }
  73
  74 /* static */ void wxCairoLibrary::CleanUp()
  75 {
  76     if (ms_lib)
  77     {
  78         delete ms_lib;
  79         ms_lib = NULL;
  80     }
  81 }
  82
  83 bool wxCairoLibrary::IsOk()
  84 {
  85     return m_ok;
  86 }
  87
  88 bool wxCairoLibrary::InitializeMethods()
  89 {
  90     wxDL_METHOD_LOAD(m_libCairo, cairo_arc);
  91     wxDL_METHOD_LOAD(m_libCairo, cairo_arc_negative);
  92     wxDL_METHOD_LOAD(m_libCairo, cairo_clip);
  93     wxDL_METHOD_LOAD(m_libCairo, cairo_close_path);
  94     wxDL_METHOD_LOAD(m_libCairo, cairo_create);
  95     wxDL_METHOD_LOAD(m_libCairo, cairo_curve_to);
  96     wxDL_METHOD_LOAD(m_libCairo, cairo_destroy);
  97     wxDL_METHOD_LOAD(m_libCairo, cairo_fill);
  98     wxDL_METHOD_LOAD(m_libCairo, cairo_fill_preserve);
  99     wxDL_METHOD_LOAD(m_libCairo, cairo_get_target);
 100     wxDL_METHOD_LOAD(m_libCairo, cairo_image_surface_create_for_data);
 101     wxDL_METHOD_LOAD(m_libCairo, cairo_line_to);
 102     wxDL_METHOD_LOAD(m_libCairo, cairo_move_to);
 103     wxDL_METHOD_LOAD(m_libCairo, cairo_new_path);
 104     wxDL_METHOD_LOAD(m_libCairo, cairo_paint);
 105     wxDL_METHOD_LOAD(m_libCairo, cairo_pattern_add_color_stop_rgba);
 106     wxDL_METHOD_LOAD(m_libCairo, cairo_pattern_create_for_surface);
 107     wxDL_METHOD_LOAD(m_libCairo, cairo_pattern_create_linear);
 108     wxDL_METHOD_LOAD(m_libCairo, cairo_pattern_create_radial);
 109     wxDL_METHOD_LOAD(m_libCairo, cairo_pattern_destroy);
 110     wxDL_METHOD_LOAD(m_libCairo, cairo_pattern_set_extend);
 111     wxDL_METHOD_LOAD(m_libCairo, cairo_pattern_set_filter);
 112     wxDL_METHOD_LOAD(m_libCairo, cairo_rectangle);
 113     wxDL_METHOD_LOAD(m_libCairo, cairo_reset_clip);
 114     wxDL_METHOD_LOAD(m_libCairo, cairo_restore);
 115     wxDL_METHOD_LOAD(m_libCairo, cairo_rotate);
 116     wxDL_METHOD_LOAD(m_libCairo, cairo_save);
 117     wxDL_METHOD_LOAD(m_libCairo, cairo_scale);
 118     wxDL_METHOD_LOAD(m_libCairo, cairo_set_dash);
 119     wxDL_METHOD_LOAD(m_libCairo, cairo_set_fill_rule);
 120     wxDL_METHOD_LOAD(m_libCairo, cairo_set_line_cap);
 121     wxDL_METHOD_LOAD(m_libCairo, cairo_set_line_join);
 122     wxDL_METHOD_LOAD(m_libCairo, cairo_set_line_width);
 123     wxDL_METHOD_LOAD(m_libCairo, cairo_set_operator);
 124     wxDL_METHOD_LOAD(m_libCairo, cairo_set_source);
 125     wxDL_METHOD_LOAD(m_libCairo, cairo_set_source_rgba);
 126     wxDL_METHOD_LOAD(m_libCairo, cairo_stroke);
 127     wxDL_METHOD_LOAD(m_libCairo, cairo_stroke_preserve);
 128     wxDL_METHOD_LOAD(m_libCairo, cairo_surface_create_similar);
 129     wxDL_METHOD_LOAD(m_libCairo, cairo_surface_destroy);
 130     wxDL_METHOD_LOAD(m_libCairo, cairo_translate);
 131
 132     wxDL_METHOD_LOAD(m_libPangoCairo, pango_cairo_update_layout);
 133     wxDL_METHOD_LOAD(m_libPangoCairo, pango_cairo_show_layout);
 134
 135     return true;
 136 }
 137
 138 //----------------------------------------------------------------------------
 139 // wxCairoModule
 140 //----------------------------------------------------------------------------
 141
 142 class wxCairoModule : public wxModule
 143 {
 144 public:
 145     wxCairoModule() { }
 146     virtual bool OnInit();
 147     virtual void OnExit();
 148
 149 private:
 150     DECLARE_DYNAMIC_CLASS(wxCairotModule)
 151 };
 152
 153 bool wxCairoModule::OnInit()
 154 {
 155     return true;
 156 }
 157
 158 void wxCairoModule::OnExit()
 159 {
 160     wxCairoLibrary::CleanUp();
 161 }
 162
 163 IMPLEMENT_DYNAMIC_CLASS(wxCairoModule, wxModule)
 164
 165 #endif // wxUSE_CAIRO