src/msw/uxtheme.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/uxtheme.cpp
   3 // Purpose:     implements wxUxThemeEngine class: support for XP themes
   4 // Author:      John Platts, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     2003
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 John Platts, Vadim Zeitlin
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_UXTHEME
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/app.h"
  31     #include "wx/toplevel.h"
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34 #endif //WX_PRECOMP
  35
  36 #include "wx/module.h"
  37
  38 #include "wx/msw/uxtheme.h"
  39
  40 // ============================================================================
  41 // wxUxThemeModule
  42 // ============================================================================
  43
  44 // this module is responsable for deleting the theme engine
  45 class wxUxThemeModule : public wxModule
  46 {
  47 public:
  48     virtual bool OnInit() { return true; }
  49     virtual void OnExit()
  50     {
  51         if ( wxUxThemeEngine::ms_themeEngine )
  52         {
  53             // this is probably not necessary right now but try to be careful
  54             // and avoid the problems which we might have if someone ever
  55             // decides to show a message box using the theme engine from
  56             // wxUxThemeEngine dtor (e.g. from wxDynamicLibrary dtor...) or
  57             // something like this
  58             wxUxThemeEngine *themeEngine = wxUxThemeEngine::ms_themeEngine;
  59             wxUxThemeEngine::ms_themeEngine = NULL;
  60             wxUxThemeEngine::ms_isThemeEngineAvailable = false;
  61
  62             delete themeEngine;
  63         }
  64     }
  65
  66
  67     DECLARE_DYNAMIC_CLASS(wxUxThemeModule)
  68 };
  69
  70 IMPLEMENT_DYNAMIC_CLASS(wxUxThemeModule, wxModule)
  71
  72 // ============================================================================
  73 // wxUxThemeEngine implementation
  74 // ============================================================================
  75
  76 wxUxThemeEngine *wxUxThemeEngine::ms_themeEngine = NULL;
  77 int wxUxThemeEngine::ms_isThemeEngineAvailable = -1;        // unknown
  78
  79 wxUxThemeEngine* wxUxThemeEngine::Get()
  80 {
  81     // we assume that themes are only used in the main thread hence no need for
  82     // critical section here
  83     if ( ms_isThemeEngineAvailable == -1 )
  84     {
  85         // we're called or the first time, check if the themes are available
  86         ms_themeEngine = new wxUxThemeEngine;
  87         if ( !ms_themeEngine->Initialize() )
  88         {
  89             // can't use themes, probably because the system doesn't support
  90             // them, don't do it again
  91             delete ms_themeEngine;
  92             ms_themeEngine = NULL;
  93
  94             ms_isThemeEngineAvailable = false;
  95         }
  96         else // initialized ok
  97         {
  98             ms_isThemeEngineAvailable = true;
  99         }
 100     }
 101
 102     return ms_themeEngine;
 103 }
 104
 105 bool wxUxThemeEngine::Initialize()
 106 {
 107     if ( wxApp::GetComCtl32Version() < 600 )
 108     {
 109         // not using theme-aware comctl32.dll anyhow, don't even try to use
 110         // themes
 111         return false;
 112     }
 113
 114     // we're prepared to handle the errors
 115     wxLogNull noLog;
 116
 117     if ( !m_dllUxTheme.Load(_T("uxtheme.dll")) )
 118         return false;
 119
 120 #define RESOLVE_UXTHEME_FUNCTION(type, funcname)                              \
 121     funcname = (type)m_dllUxTheme.GetSymbol(_T(#funcname));                   \
 122     if ( !funcname )                                                          \
 123         return false
 124
 125     RESOLVE_UXTHEME_FUNCTION(PFNWXUOPENTHEMEDATA, OpenThemeData);
 126     RESOLVE_UXTHEME_FUNCTION(PFNWXUCLOSETHEMEDATA, CloseThemeData);
 127     RESOLVE_UXTHEME_FUNCTION(PFNWXUDRAWTHEMEBACKGROUND, DrawThemeBackground);
 128     RESOLVE_UXTHEME_FUNCTION(PFNWXUDRAWTHEMETEXT, DrawThemeText);
 129     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEBACKGROUNDCONTENTRECT, GetThemeBackgroundContentRect);
 130     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEBACKGROUNDEXTENT, GetThemeBackgroundExtent);
 131     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEPARTSIZE, GetThemePartSize);
 132     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMETEXTEXTENT, GetThemeTextExtent);
 133     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMETEXTMETRICS, GetThemeTextMetrics);
 134     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEBACKGROUNDREGION, GetThemeBackgroundRegion);
 135     RESOLVE_UXTHEME_FUNCTION(PFNWXUHITTESTTHEMEBACKGROUND, HitTestThemeBackground);
 136     RESOLVE_UXTHEME_FUNCTION(PFNWXUDRAWTHEMEEDGE, DrawThemeEdge);
 137     RESOLVE_UXTHEME_FUNCTION(PFNWXUDRAWTHEMEICON, DrawThemeIcon);
 138     RESOLVE_UXTHEME_FUNCTION(PFNWXUISTHEMEPARTDEFINED, IsThemePartDefined);
 139     RESOLVE_UXTHEME_FUNCTION(PFNWXUISTHEMEBACKGROUNDPARTIALLYTRANSPARENT, IsThemeBackgroundPartiallyTransparent);
 140     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMECOLOR, GetThemeColor);
 141     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEMETRIC, GetThemeMetric);
 142     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESTRING, GetThemeString);
 143     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEBOOL, GetThemeBool);
 144     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEINT, GetThemeInt);
 145     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEENUMVALUE, GetThemeEnumValue);
 146     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEPOSITION, GetThemePosition);
 147     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEFONT, GetThemeFont);
 148     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMERECT, GetThemeRect);
 149     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEMARGINS, GetThemeMargins);
 150     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEINTLIST, GetThemeIntList);
 151     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEPROPERTYORIGIN, GetThemePropertyOrigin);
 152     RESOLVE_UXTHEME_FUNCTION(PFNWXUSETWINDOWTHEME, SetWindowTheme);
 153     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEFILENAME, GetThemeFilename);
 154     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSCOLOR, GetThemeSysColor);
 155     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSCOLORBRUSH, GetThemeSysColorBrush);
 156     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSBOOL, GetThemeSysBool);
 157     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSSIZE, GetThemeSysSize);
 158     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSFONT, GetThemeSysFont);
 159     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSSTRING, GetThemeSysString);
 160     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSINT, GetThemeSysInt);
 161     RESOLVE_UXTHEME_FUNCTION(PFNWXUISTHEMEACTIVE, IsThemeActive);
 162     RESOLVE_UXTHEME_FUNCTION(PFNWXUISAPPTHEMED, IsAppThemed);
 163     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETWINDOWTHEME, GetWindowTheme);
 164     RESOLVE_UXTHEME_FUNCTION(PFNWXUENABLETHEMEDIALOGTEXTURE, EnableThemeDialogTexture);
 165     RESOLVE_UXTHEME_FUNCTION(PFNWXUISTHEMEDIALOGTEXTUREENABLED, IsThemeDialogTextureEnabled);
 166     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEAPPPROPERTIES, GetThemeAppProperties);
 167     RESOLVE_UXTHEME_FUNCTION(PFNWXUSETTHEMEAPPPROPERTIES, SetThemeAppProperties);
 168     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETCURRENTTHEMENAME, GetCurrentThemeName);
 169     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEDOCUMENTATIONPROPERTY, GetThemeDocumentationProperty);
 170     RESOLVE_UXTHEME_FUNCTION(PFNWXUDRAWTHEMEPARENTBACKGROUND, DrawThemeParentBackground);
 171     RESOLVE_UXTHEME_FUNCTION(PFNWXUENABLETHEMING, EnableTheming);
 172
 173 #undef RESOLVE_UXTHEME_FUNCTION
 174
 175     return true;
 176 }
 177
 178 #endif // wxUSE_UXTHEME
 179