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