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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  17     #pragma implementation "uxtheme.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_UXTHEME
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/app.h"
  35     #include "wx/toplevel.h"
  36     #include "wx/string.h"
  37     #include "wx/log.h"
  38 #endif //WX_PRECOMP
  39
  40 #include "wx/module.h"
  41
  42 #include "wx/msw/uxtheme.h"
  43
  44 // ============================================================================
  45 // wxUxThemeModule
  46 // ============================================================================
  47
  48 // this module is responsable for deleting the theme engine
  49 class wxUxThemeModule : public wxModule
  50 {
  51 public:
  52     virtual bool OnInit() { return true; }
  53     virtual void OnExit()
  54     {
  55         if ( wxUxThemeEngine::ms_themeEngine )
  56         {
  57             // this is probably not necessary right now but try to be careful
  58             // and avoid the problems which we might have if someone ever
  59             // decides to show a message box using the theme engine from
  60             // wxUxThemeEngine dtor (e.g. from wxDynamicLibrary dtor...) or
  61             // something like this
  62             wxUxThemeEngine *themeEngine = wxUxThemeEngine::ms_themeEngine;
  63             wxUxThemeEngine::ms_themeEngine = NULL;
  64             wxUxThemeEngine::ms_isThemeEngineAvailable = false;
  65
  66             delete themeEngine;
  67         }
  68     }
  69
  70
  71     DECLARE_DYNAMIC_CLASS(wxUxThemeModule)
  72 };
  73
  74 IMPLEMENT_DYNAMIC_CLASS(wxUxThemeModule, wxModule)
  75
  76 // ============================================================================
  77 // wxUxThemeEngine implementation
  78 // ============================================================================
  79
  80 wxUxThemeEngine *wxUxThemeEngine::ms_themeEngine = NULL;
  81 int wxUxThemeEngine::ms_isThemeEngineAvailable = -1;        // unknown
  82
  83 wxUxThemeEngine* wxUxThemeEngine::Get()
  84 {
  85     // we assume that themes are only used in the main thread hence no need for
  86     // critical section here
  87     if ( ms_isThemeEngineAvailable == -1 )
  88     {
  89         // we're called or the first time, check if the themes are available
  90         ms_themeEngine = new wxUxThemeEngine;
  91         if ( !ms_themeEngine->Initialize() )
  92         {
  93             // can't use themes, probably because the system doesn't support
  94             // them, don't do it again
  95             delete ms_themeEngine;
  96             ms_themeEngine = NULL;
  97
  98             ms_isThemeEngineAvailable = false;
  99         }
 100         else // initialized ok
 101         {
 102             ms_isThemeEngineAvailable = true;
 103         }
 104     }
 105
 106     return ms_themeEngine;
 107 }
 108
 109 bool wxUxThemeEngine::Initialize()
 110 {
 111     if ( wxApp::GetComCtl32Version() < 600 )
 112     {
 113         // not using theme-aware comctl32.dll anyhow, don't even try to use
 114         // themes
 115         return false;
 116     }
 117
 118     // we're prepared to handle the errors
 119     wxLogNull noLog;
 120
 121     if ( !m_dllUxTheme.Load(_T("uxtheme.dll")) )
 122         return false;
 123
 124 #define RESOLVE_UXTHEME_FUNCTION(type, funcname)                              \
 125     funcname = (type)m_dllUxTheme.GetSymbol(_T(#funcname));                   \
 126     if ( !funcname )                                                          \
 127         return false
 128
 129     RESOLVE_UXTHEME_FUNCTION(PFNWXUOPENTHEMEDATA, OpenThemeData);
 130     RESOLVE_UXTHEME_FUNCTION(PFNWXUCLOSETHEMEDATA, CloseThemeData);
 131     RESOLVE_UXTHEME_FUNCTION(PFNWXUDRAWTHEMEBACKGROUND, DrawThemeBackground);
 132     RESOLVE_UXTHEME_FUNCTION(PFNWXUDRAWTHEMETEXT, DrawThemeText);
 133     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEBACKGROUNDCONTENTRECT, GetThemeBackgroundContentRect);
 134     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEBACKGROUNDEXTENT, GetThemeBackgroundExtent);
 135     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEPARTSIZE, GetThemePartSize);
 136     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMETEXTEXTENT, GetThemeTextExtent);
 137     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMETEXTMETRICS, GetThemeTextMetrics);
 138     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEBACKGROUNDREGION, GetThemeBackgroundRegion);
 139     RESOLVE_UXTHEME_FUNCTION(PFNWXUHITTESTTHEMEBACKGROUND, HitTestThemeBackground);
 140     RESOLVE_UXTHEME_FUNCTION(PFNWXUDRAWTHEMEEDGE, DrawThemeEdge);
 141     RESOLVE_UXTHEME_FUNCTION(PFNWXUDRAWTHEMEICON, DrawThemeIcon);
 142     RESOLVE_UXTHEME_FUNCTION(PFNWXUISTHEMEPARTDEFINED, IsThemePartDefined);
 143     RESOLVE_UXTHEME_FUNCTION(PFNWXUISTHEMEBACKGROUNDPARTIALLYTRANSPARENT, IsThemeBackgroundPartiallyTransparent);
 144     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMECOLOR, GetThemeColor);
 145     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEMETRIC, GetThemeMetric);
 146     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESTRING, GetThemeString);
 147     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEBOOL, GetThemeBool);
 148     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEINT, GetThemeInt);
 149     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEENUMVALUE, GetThemeEnumValue);
 150     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEPOSITION, GetThemePosition);
 151     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEFONT, GetThemeFont);
 152     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMERECT, GetThemeRect);
 153     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEMARGINS, GetThemeMargins);
 154     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEINTLIST, GetThemeIntList);
 155     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEPROPERTYORIGIN, GetThemePropertyOrigin);
 156     RESOLVE_UXTHEME_FUNCTION(PFNWXUSETWINDOWTHEME, SetWindowTheme);
 157     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEFILENAME, GetThemeFilename);
 158     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSCOLOR, GetThemeSysColor);
 159     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSCOLORBRUSH, GetThemeSysColorBrush);
 160     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSBOOL, GetThemeSysBool);
 161     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSSIZE, GetThemeSysSize);
 162     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSFONT, GetThemeSysFont);
 163     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSSTRING, GetThemeSysString);
 164     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMESYSINT, GetThemeSysInt);
 165     RESOLVE_UXTHEME_FUNCTION(PFNWXUISTHEMEACTIVE, IsThemeActive);
 166     RESOLVE_UXTHEME_FUNCTION(PFNWXUISAPPTHEMED, IsAppThemed);
 167     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETWINDOWTHEME, GetWindowTheme);
 168     RESOLVE_UXTHEME_FUNCTION(PFNWXUENABLETHEMEDIALOGTEXTURE, EnableThemeDialogTexture);
 169     RESOLVE_UXTHEME_FUNCTION(PFNWXUISTHEMEDIALOGTEXTUREENABLED, IsThemeDialogTextureEnabled);
 170     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEAPPPROPERTIES, GetThemeAppProperties);
 171     RESOLVE_UXTHEME_FUNCTION(PFNWXUSETTHEMEAPPPROPERTIES, SetThemeAppProperties);
 172     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETCURRENTTHEMENAME, GetCurrentThemeName);
 173     RESOLVE_UXTHEME_FUNCTION(PFNWXUGETTHEMEDOCUMENTATIONPROPERTY, GetThemeDocumentationProperty);
 174     RESOLVE_UXTHEME_FUNCTION(PFNWXUDRAWTHEMEPARENTBACKGROUND, DrawThemeParentBackground);
 175     RESOLVE_UXTHEME_FUNCTION(PFNWXUENABLETHEMING, EnableTheming);
 176
 177 #undef RESOLVE_UXTHEME_FUNCTION
 178
 179     return true;
 180 }
 181
 182 #endif // wxUSE_UXTHEME
 183