Make an image block beore writing it, if there's no data in the block

[wxWidgets.git] / include / wx / utils.h

diff --git a/include/wx/utils.h b/include/wx/utils.h
index e599e210cb518da11282e67b4d96ba5f2e1fda62..b84f78f44f4b6fb17003dc37333d4caef8e4b807 100644 (file)
--- a/include/wx/utils.h
+++ b/include/wx/utils.h
@@ -21,6 +21,7 @@
 #include "wx/filefn.h"
 
 class WXDLLIMPEXP_BASE wxArrayString;
+class WXDLLIMPEXP_BASE wxArrayInt;
 
 // need this for wxGetDiskSpace() as we can't, unfortunately, forward declare
 // wxLongLong
@@ -100,6 +101,85 @@ WXDLLIMPEXP_BASE const wxChar *wxGetInstallPrefix();
 // Return path to wxWin data (/usr/share/wx/%{version}) (Unices)
 WXDLLIMPEXP_BASE wxString wxGetDataDir();
 
+/*
+ * Class to make it easier to specify platform-dependent values
+ *
+ * Examples:
+ *  long val = wxPlatform::If(wxMac, 1).ElseIf(wxGTK, 2).ElseIf(stPDA, 5).Else(3);
+ *  wxString strVal = wxPlatform::If(wxMac, wxT("Mac")).ElseIf(wxMSW, wxT("MSW")).Else(wxT("Other"));
+ *
+ * A custom platform symbol:
+ *
+ *  #define stPDA 100
+ *  #ifdef __WXWINCE__
+ *      wxPlatform::AddPlatform(stPDA);
+ *  #endif
+ *
+ *  long windowStyle = wxCAPTION | (long) wxPlatform::IfNot(stPDA, wxRESIZE_BORDER);
+ *
+ */
+
+class WXDLLIMPEXP_BASE wxPlatform
+{
+public:
+    wxPlatform() { Init(); }
+    wxPlatform(const wxPlatform& platform) { Copy(platform); }
+    void operator = (const wxPlatform& platform) { Copy(platform); }
+    void Copy(const wxPlatform& platform);
+    void Init() { m_longValue = 0; m_doubleValue = 0.0; }
+
+    // Specify an optional default value
+    wxPlatform(long defValue) { m_longValue = defValue; m_doubleValue = 0.0; }
+    wxPlatform(const wxString& defValue) { m_stringValue = defValue; m_longValue = 0; m_doubleValue = 0.0; }
+    wxPlatform(double defValue) { m_longValue = 0; m_doubleValue = defValue; }
+
+    static wxPlatform If(int platform, long value);
+    static wxPlatform IfNot(int platform, long value);
+    wxPlatform& ElseIf(int platform, long value);
+    wxPlatform& ElseIfNot(int platform, long value);
+    wxPlatform& Else(long value);
+
+    static wxPlatform If(int platform, int value);
+    static wxPlatform IfNot(int platform, int value) { return IfNot(platform, (long)value); }
+    wxPlatform& ElseIf(int platform, int value) { return ElseIf(platform, (long) value); }
+    wxPlatform& ElseIfNot(int platform, int value) { return ElseIfNot(platform, (long) value); }
+    wxPlatform& Else(int value) { return Else((long) value); }
+
+    static wxPlatform If(int platform, double value);
+    static wxPlatform IfNot(int platform, double value);
+    wxPlatform& ElseIf(int platform, double value);
+    wxPlatform& ElseIfNot(int platform, double value);
+    wxPlatform& Else(double value);
+
+    static wxPlatform If(int platform, const wxString& value);
+    static wxPlatform IfNot(int platform, const wxString& value);
+    wxPlatform& ElseIf(int platform, const wxString& value);
+    wxPlatform& ElseIfNot(int platform, const wxString& value);
+    wxPlatform& Else(const wxString& value);
+
+    long GetInteger() const { return m_longValue; }
+    const wxString& GetString() const { return m_stringValue; }
+    double GetDouble() const { return m_doubleValue; }
+
+    operator int() const { return (int) GetInteger(); }
+    operator long() const { return GetInteger(); }
+    operator double() const { return GetDouble(); }
+    operator const wxString() const { return GetString(); }
+    operator const wxChar*() const { return (const wxChar*) GetString(); }
+
+    static void AddPlatform(int platform);
+    static bool Is(int platform);
+    static void ClearPlatforms();
+
+private:
+    long                m_longValue;
+    double              m_doubleValue;
+    wxString            m_stringValue;
+    static wxArrayInt*  sm_customPlatforms;
+};
+
+/// Function for testing current platform
+inline bool wxPlatformIs(int platform) { return wxPlatform::Is(platform); }
 
 #if wxUSE_GUI