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