adding ContentScaleFactor support to dc - defaulting to 1.0

[wxWidgets.git] / src / common / convauto.cpp

diff --git a/src/common/convauto.cpp b/src/common/convauto.cpp
index 756e81c233f2d71b77dfe0e7ae96f1ad6712f19c..3fcccd849cc3e67156dcc529bbf6c5e6dfb4c2dc 100644 (file)
--- a/src/common/convauto.cpp
+++ b/src/common/convauto.cpp
@@ -23,10 +23,6 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

-#ifndef WX_PRECOMP
-    #include "wx/wx.h"
-#endif //WX_PRECOMP
-

 #include "wx/convauto.h"
 
 // we use latin1 by default as it seems the least bad choice: the files we need
 #include "wx/convauto.h"
 
 // we use latin1 by default as it seems the least bad choice: the files we need


@@ -35,6 +31,17 @@
 // seem to be a good idea and there is no other reasonable alternative
 wxFontEncoding wxConvAuto::ms_defaultMBEncoding = wxFONTENCODING_ISO8859_1;
 
 // seem to be a good idea and there is no other reasonable alternative
 wxFontEncoding wxConvAuto::ms_defaultMBEncoding = wxFONTENCODING_ISO8859_1;
 

+namespace
+{
+
+const char BOM_UTF32BE[] = { '\x00', '\x00', '\xFE', '\xFF' };
+const char BOM_UTF32LE[] = { '\xFF', '\xFE', '\x00', '\x00' };
+const char BOM_UTF16BE[] = { '\xFE', '\xFF'                 };
+const char BOM_UTF16LE[] = { '\xFF', '\xFE'                 };
+const char BOM_UTF8[]    = { '\xEF', '\xBB', '\xBF'         };
+
+} // anonymous namespace
+

 // ============================================================================
 // implementation
 // ============================================================================
 // ============================================================================
 // implementation
 // ============================================================================


@@ -49,7 +56,29 @@ void wxConvAuto::SetFallbackEncoding(wxFontEncoding enc)
 }
 
 /* static */
 }
 
 /* static */

-wxConvAuto::BOMType wxConvAuto::DetectBOM(const char *src, size_t srcLen)
+const char* wxConvAuto::GetBOMChars(wxBOM bom, size_t* count)
+{
+    wxCHECK_MSG( count , NULL, wxS("count pointer must be provided") );
+
+    switch ( bom )
+    {
+        case wxBOM_UTF32BE: *count = WXSIZEOF(BOM_UTF32BE); return BOM_UTF32BE;
+        case wxBOM_UTF32LE: *count = WXSIZEOF(BOM_UTF32LE); return BOM_UTF32LE;
+        case wxBOM_UTF16BE: *count = WXSIZEOF(BOM_UTF16BE); return BOM_UTF16BE;
+        case wxBOM_UTF16LE: *count = WXSIZEOF(BOM_UTF16LE); return BOM_UTF16LE;
+        case wxBOM_UTF8   : *count = WXSIZEOF(BOM_UTF8   ); return BOM_UTF8;
+        case wxBOM_Unknown:
+        case wxBOM_None:
+            wxFAIL_MSG( wxS("Invalid BOM type") );
+            return NULL;
+    }
+
+    wxFAIL_MSG( wxS("Unknown BOM type") );
+    return NULL;
+}
+
+/* static */
+wxBOM wxConvAuto::DetectBOM(const char *src, size_t srcLen)

 {
     // examine the buffer for BOM presence
     //
 {
     // examine the buffer for BOM presence
     //


@@ -69,14 +98,14 @@ wxConvAuto::BOMType wxConvAuto::DetectBOM(const char *src, size_t srcLen)
     switch ( srcLen )
     {
         case 0:
     switch ( srcLen )
     {
         case 0:

-            return BOM_Unknown;
+            return wxBOM_Unknown;

 
         case 1:
             if ( src[0] == '\x00' || src[0] == '\xFF' ||
                  src[0] == '\xFE' || src[0] == '\xEF')
             {
                 // this could be a BOM but we don't know yet
 
         case 1:
             if ( src[0] == '\x00' || src[0] == '\xFF' ||
                  src[0] == '\xFE' || src[0] == '\xEF')
             {
                 // this could be a BOM but we don't know yet

-                return BOM_Unknown;
+                return wxBOM_Unknown;

             }
             break;
 
             }
             break;
 


@@ -85,22 +114,22 @@ wxConvAuto::BOMType wxConvAuto::DetectBOM(const char *src, size_t srcLen)
             if ( src[0] == '\xEF' && src[1] == '\xBB' )
             {
                 if ( srcLen == 3 )
             if ( src[0] == '\xEF' && src[1] == '\xBB' )
             {
                 if ( srcLen == 3 )

-                    return src[2] == '\xBF' ? BOM_UTF8 : BOM_None;
+                    return src[2] == '\xBF' ? wxBOM_UTF8 : wxBOM_None;

 
 

-                return BOM_Unknown;
+                return wxBOM_Unknown;

             }
 
             if ( src[0] == '\xFE' && src[1] == '\xFF' )
             }
 
             if ( src[0] == '\xFE' && src[1] == '\xFF' )

-                return BOM_UTF16BE;
+                return wxBOM_UTF16BE;

 
             if ( src[0] == '\xFF' && src[1] == '\xFE' )
             {
                 // if the next byte is 0, it could be an UTF-32LE BOM but if it
                 // isn't we can be sure it's UTF-16LE
                 if ( srcLen == 3 && src[2] != '\x00' )
 
             if ( src[0] == '\xFF' && src[1] == '\xFE' )
             {
                 // if the next byte is 0, it could be an UTF-32LE BOM but if it
                 // isn't we can be sure it's UTF-16LE
                 if ( srcLen == 3 && src[2] != '\x00' )

-                    return BOM_UTF16LE;
+                    return wxBOM_UTF16LE;

 
 

-                return BOM_Unknown;
+                return wxBOM_Unknown;

             }
 
             if ( src[0] == '\x00' && src[1] == '\x00' )
             }
 
             if ( src[0] == '\x00' && src[1] == '\x00' )


@@ -108,9 +137,9 @@ wxConvAuto::BOMType wxConvAuto::DetectBOM(const char *src, size_t srcLen)
                 // this could only be UTF-32BE, check that the data we have so
                 // far allows for it
                 if ( srcLen == 3 && src[2] != '\xFE' )
                 // this could only be UTF-32BE, check that the data we have so
                 // far allows for it
                 if ( srcLen == 3 && src[2] != '\xFE' )

-                    return BOM_None;
+                    return wxBOM_None;

 
 

-                return BOM_Unknown;
+                return wxBOM_Unknown;

             }
             break;
 
             }
             break;
 


@@ -118,61 +147,61 @@ wxConvAuto::BOMType wxConvAuto::DetectBOM(const char *src, size_t srcLen)
             // we have at least 4 characters so we may finally decide whether
             // we have a BOM or not
             if ( src[0] == '\xEF' && src[1] == '\xBB' && src[2] == '\xBF' )
             // we have at least 4 characters so we may finally decide whether
             // we have a BOM or not
             if ( src[0] == '\xEF' && src[1] == '\xBB' && src[2] == '\xBF' )

-                return BOM_UTF8;
+                return wxBOM_UTF8;

 
             if ( src[0] == '\x00' && src[1] == '\x00' &&
                  src[2] == '\xFE' && src[3] == '\xFF' )
 
             if ( src[0] == '\x00' && src[1] == '\x00' &&
                  src[2] == '\xFE' && src[3] == '\xFF' )

-                return BOM_UTF32BE;
+                return wxBOM_UTF32BE;

 
             if ( src[0] == '\xFF' && src[1] == '\xFE' &&
                  src[2] == '\x00' && src[3] == '\x00' )
 
             if ( src[0] == '\xFF' && src[1] == '\xFE' &&
                  src[2] == '\x00' && src[3] == '\x00' )

-                return BOM_UTF32LE;
+                return wxBOM_UTF32LE;

 
             if ( src[0] == '\xFE' && src[1] == '\xFF' )
 
             if ( src[0] == '\xFE' && src[1] == '\xFF' )

-                return BOM_UTF16BE;
+                return wxBOM_UTF16BE;

 
             if ( src[0] == '\xFF' && src[1] == '\xFE' )
 
             if ( src[0] == '\xFF' && src[1] == '\xFE' )

-                return BOM_UTF16LE;
+                return wxBOM_UTF16LE;

     }
 
     }
 

-    return BOM_None;
+    return wxBOM_None;

 }
 
 }
 

-void wxConvAuto::InitFromBOM(BOMType bomType)
+void wxConvAuto::InitFromBOM(wxBOM bomType)

 {
     m_consumedBOM = false;
 
     switch ( bomType )
     {
 {
     m_consumedBOM = false;
 
     switch ( bomType )
     {

-        case BOM_Unknown:
+        case wxBOM_Unknown:

             wxFAIL_MSG( "shouldn't be called for this BOM type" );
             break;
 
             wxFAIL_MSG( "shouldn't be called for this BOM type" );
             break;
 

-        case BOM_None:
+        case wxBOM_None:

             // use the default
             break;
 
             // use the default
             break;
 

-        case BOM_UTF32BE:
+        case wxBOM_UTF32BE:

             m_conv = new wxMBConvUTF32BE;
             m_ownsConv = true;
             break;
 
             m_conv = new wxMBConvUTF32BE;
             m_ownsConv = true;
             break;
 

-        case BOM_UTF32LE:
+        case wxBOM_UTF32LE:

             m_conv = new wxMBConvUTF32LE;
             m_ownsConv = true;
             break;
 
             m_conv = new wxMBConvUTF32LE;
             m_ownsConv = true;
             break;
 

-        case BOM_UTF16BE:
+        case wxBOM_UTF16BE:

             m_conv = new wxMBConvUTF16BE;
             m_ownsConv = true;
             break;
 
             m_conv = new wxMBConvUTF16BE;
             m_ownsConv = true;
             break;
 

-        case BOM_UTF16LE:
+        case wxBOM_UTF16LE:

             m_conv = new wxMBConvUTF16LE;
             m_ownsConv = true;
             break;
 
             m_conv = new wxMBConvUTF16LE;
             m_ownsConv = true;
             break;
 

-        case BOM_UTF8:
+        case wxBOM_UTF8:

             InitWithUTF8();
             break;
 
             InitWithUTF8();
             break;
 


@@ -195,25 +224,25 @@ void wxConvAuto::SkipBOM(const char **src, size_t *len) const
     int ofs;
     switch ( m_bomType )
     {
     int ofs;
     switch ( m_bomType )
     {

-        case BOM_Unknown:
+        case wxBOM_Unknown:

             wxFAIL_MSG( "shouldn't be called for this BOM type" );
             return;
 
             wxFAIL_MSG( "shouldn't be called for this BOM type" );
             return;
 

-        case BOM_None:
+        case wxBOM_None:

             ofs = 0;
             break;
 
             ofs = 0;
             break;
 

-        case BOM_UTF32BE:
-        case BOM_UTF32LE:
+        case wxBOM_UTF32BE:
+        case wxBOM_UTF32LE:

             ofs = 4;
             break;
 
             ofs = 4;
             break;
 

-        case BOM_UTF16BE:
-        case BOM_UTF16LE:
+        case wxBOM_UTF16BE:
+        case wxBOM_UTF16LE:

             ofs = 2;
             break;
 
             ofs = 2;
             break;
 

-        case BOM_UTF8:
+        case wxBOM_UTF8:

             ofs = 3;
             break;
 
             ofs = 3;
             break;
 


@@ -230,7 +259,7 @@ void wxConvAuto::SkipBOM(const char **src, size_t *len) const
 bool wxConvAuto::InitFromInput(const char *src, size_t len)
 {
     m_bomType = DetectBOM(src, len == wxNO_LEN ? strlen(src) : len);
 bool wxConvAuto::InitFromInput(const char *src, size_t len)
 {
     m_bomType = DetectBOM(src, len == wxNO_LEN ? strlen(src) : len);

-    if ( m_bomType == BOM_Unknown )
+    if ( m_bomType == wxBOM_Unknown )

         return false;
 
     InitFromBOM(m_bomType);
         return false;
 
     InitFromBOM(m_bomType);


@@ -279,7 +308,7 @@ wxConvAuto::ToWChar(wchar_t *dst, size_t dstLen,
 
     // try to convert using the auto-detected encoding
     size_t rc = m_conv->ToWChar(dst, dstLen, src, srcLen);
 
     // try to convert using the auto-detected encoding
     size_t rc = m_conv->ToWChar(dst, dstLen, src, srcLen);

-    if ( rc == wxCONV_FAILED && m_bomType == BOM_None )
+    if ( rc == wxCONV_FAILED && m_bomType == wxBOM_None )

     {
         // if the conversion failed but we didn't really detect anything and
         // simply tried UTF-8 by default, retry it using the fall-back
     {
         // if the conversion failed but we didn't really detect anything and
         // simply tried UTF-8 by default, retry it using the fall-back