Fix crash in wxDC::GetMultiLineTextExtent() after last commit.

[wxWidgets.git] / src / osx / carbon / font.cpp

diff --git a/src/osx/carbon/font.cpp b/src/osx/carbon/font.cpp
index c46f7747246fedfc2b382a7185980f535ae1245a..634453ec6a335b4e4c4b034ceff938301ba91a56 100644 (file)
--- a/src/osx/carbon/font.cpp
+++ b/src/osx/carbon/font.cpp
@@ -31,8 +31,6 @@
 #include <map>
 #include <string>
 
-IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
-
 class WXDLLEXPORT wxFontRefData: public wxGDIRefData
 {
 public:
@@ -139,6 +137,8 @@ public:
     }
 
     wxFontEncoding GetEncoding() const { return m_info.GetEncoding(); }
+    
+    bool IsFixedWidth() const;
 
     void Free();
 
@@ -177,7 +177,7 @@ public:
 
 #define M_FONTDATA ((wxFontRefData*)m_refData)
 
-wxFontRefData::wxFontRefData(const wxFontRefData& data)
+wxFontRefData::wxFontRefData(const wxFontRefData& data) : wxGDIRefData()
 {
     Init();
     m_info = data.m_info;
@@ -274,7 +274,6 @@ wxFontRefData::wxFontRefData(wxOSXSystemFont font, int size)
     Init();
 
 #if wxOSX_USE_CORE_TEXT
-    if (  UMAGetSystemVersion() >= 0x1050 )
     {
         CTFontUIFontType uifont = kCTFontSystemFontType;
         switch( font )
@@ -454,6 +453,9 @@ void wxFontRefData::CreateATSUFont()
 }
 #endif
 
+static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
+static const CGAffineTransform kSlantTransform = CGAffineTransformMake( 1, 0, tan(DegToRad(11)), 1, 0, 0 );
+
 void wxFontRefData::MacFindFont()
 {
     if ( m_fontValid )
@@ -464,7 +466,6 @@ void wxFontRefData::MacFindFont()
     m_info.EnsureValid();
 
 #if wxOSX_USE_CORE_TEXT
-    if (  UMAGetSystemVersion() >= 0x1050 )
     {
          CTFontSymbolicTraits traits = 0;
 
@@ -474,19 +475,57 @@ void wxFontRefData::MacFindFont()
             traits |= kCTFontItalicTrait;
 
         // use font caching
-        wxString lookupnameWithSize = wxString::Format( "%s_%ld_%ld", m_info.m_faceName.c_str(), traits, m_info.m_pointSize );
+        wxString lookupnameWithSize = wxString::Format( "%s_%u_%d", m_info.m_faceName, traits, m_info.m_pointSize );
 
         static std::map< std::wstring , wxCFRef< CTFontRef > > fontcache ;
         m_ctFont = fontcache[ std::wstring(lookupnameWithSize.wc_str()) ];
         if ( !m_ctFont )
         {
             m_ctFont.reset(CTFontCreateWithName( wxCFStringRef(m_info.m_faceName), m_info.m_pointSize , NULL ));
-            if ( traits != 0 )
+            if ( m_ctFont.get() == NULL )
+            {
+                // TODO try fallbacks according to font type
+                m_ctFont.reset(CTFontCreateUIFontForLanguage( kCTFontSystemFontType, m_info.m_pointSize , NULL ));
+            }
+            else
             {
-                m_ctFont.reset(CTFontCreateCopyWithSymbolicTraits( m_ctFont, 0, NULL, traits, traits ));
+                if ( traits != 0 )
+                {
+                    // attempt native font variant, if not available, fallback to italic emulation mode and remove bold
+                    CTFontRef fontWithTraits = CTFontCreateCopyWithSymbolicTraits( m_ctFont, 0, NULL, traits, traits );
+                    if ( fontWithTraits == NULL )
+                    {
+                        CTFontSymbolicTraits remainingTraits = traits;
+                        const CGAffineTransform* remainingTransform = NULL;
+
+                        if( remainingTraits & kCTFontItalicTrait )
+                        {
+                            remainingTraits &= ~kCTFontItalicTrait;
+                            remainingTransform = &kSlantTransform;
+                            if ( remainingTraits & kCTFontBoldTrait )
+                            {
+                                // first try an emulated oblique with an existing bold font
+                                fontWithTraits = CTFontCreateCopyWithSymbolicTraits( m_ctFont, 0, remainingTransform, remainingTraits, remainingTraits );
+                                if ( fontWithTraits == NULL )
+                                {
+                                    // give in on the bold, try native oblique
+                                    fontWithTraits = CTFontCreateCopyWithSymbolicTraits( m_ctFont, 0, NULL, kCTFontItalicTrait, kCTFontItalicTrait );
+                                }
+                            }
+                        }
+
+                        if ( fontWithTraits == NULL )
+                        {
+                            fontWithTraits = CTFontCreateWithName( wxCFStringRef(m_info.m_faceName), m_info.m_pointSize, remainingTransform );
+                        }
+
+                    }
+                    if ( fontWithTraits != NULL )
+                        m_ctFont.reset(fontWithTraits);
+                }
             }
         }
-        
+
         m_cgFont.reset(CTFontCopyGraphicsFont(m_ctFont, NULL));
     }
 
@@ -503,6 +542,16 @@ void wxFontRefData::MacFindFont()
     m_fontValid = true;
 }
 
+bool wxFontRefData::IsFixedWidth() const
+{
+#if wxOSX_USE_CORE_TEXT
+    CTFontSymbolicTraits traits = CTFontGetSymbolicTraits(m_ctFont);
+    return (traits & kCTFontMonoSpaceTrait) != 0;
+#else
+    return false;
+#endif
+}
+
 // ----------------------------------------------------------------------------
 // wxFont
 // ----------------------------------------------------------------------------
@@ -618,7 +667,7 @@ wxGDIRefData *wxFont::CloneGDIRefData(const wxGDIRefData *data) const
 
 void wxFont::SetPointSize(int pointSize)
 {
-    if ( M_FONTDATA->GetPointSize() == pointSize )
+    if ( M_FONTDATA != NULL && M_FONTDATA->GetPointSize() == pointSize )
         return;
 
     AllocExclusive();
@@ -691,10 +740,18 @@ wxSize wxFont::GetPixelSize() const
 #endif
 }
 
-wxFontFamily wxFont::GetFamily() const
+bool wxFont::IsFixedWidth() const
 {
-    wxCHECK_MSG( M_FONTDATA != NULL , wxFONTFAMILY_MAX, wxT("invalid font") );
+    wxCHECK_MSG( M_FONTDATA != NULL , false, wxT("invalid font") );
+    
+    // cast away constness otherwise lazy font resolution is not possible
+    const_cast<wxFont *>(this)->RealizeResource();
 
+    return M_FONTDATA->IsFixedWidth();
+}
+
+wxFontFamily wxFont::DoGetFamily() const
+{
     return M_FONTDATA->GetFamily();
 }
 
@@ -775,7 +832,6 @@ void * wxFont::MacGetATSUStyle() const
     return M_FONTDATA->m_macATSUStyle;
 }
 
-#if WXWIN_COMPATIBILITY_2_8
 wxUint32 wxFont::MacGetATSUFontID() const
 {
     wxCHECK_MSG( M_FONTDATA != NULL, 0, wxT("invalid font") );
@@ -797,8 +853,6 @@ wxUint32 wxFont::MacGetATSUAdditionalQDStyles() const
 }
 #endif
 
-#endif
-
 #if wxOSX_USE_CORE_TEXT
 
 CTFontRef wxFont::OSXGetCTFont() const
@@ -842,10 +896,24 @@ NSFont* wxFont::OSXGetNSFont() const
 
 #endif
 
+#if wxOSX_USE_IPHONE
+
+UIFont* wxFont::OSXGetUIFont() const
+{
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
+    // cast away constness otherwise lazy font resolution is not possible
+    const_cast<wxFont *>(this)->RealizeResource();
+
+    return (M_FONTDATA->m_uiFont);
+}
+
+#endif
+
 const wxNativeFontInfo * wxFont::GetNativeFontInfo() const
 {
     wxCHECK_MSG( M_FONTDATA != NULL , NULL, wxT("invalid font") );
-    wxCHECK_MSG( Ok(), NULL, wxT("invalid font") );
+    wxCHECK_MSG( IsOk(), NULL, wxT("invalid font") );
 
     // cast away constness otherwise lazy font resolution is not possible
     const_cast<wxFont *>(this)->RealizeResource();
@@ -859,7 +927,7 @@ const wxNativeFontInfo * wxFont::GetNativeFontInfo() const
 // wxNativeFontInfo
 // ----------------------------------------------------------------------------
 
-#if wxOSX_USE_CORE_TEXT
+#if 0 // wxOSX_USE_CORE_TEXT
 
 /* from Core Text Manual Common Operations */
 
@@ -1169,6 +1237,12 @@ wxFontEncoding wxNativeFontInfo::GetEncoding() const
     return m_encoding;
 }
 
+bool wxNativeFontInfo::GetStrikethrough() const
+{
+    return false;
+}
+
+
 // changing the font descriptor
 
 void wxNativeFontInfo::SetPointSize(int pointsize)
@@ -1233,3 +1307,9 @@ void wxNativeFontInfo::SetEncoding(wxFontEncoding encoding_)
     m_encoding = encoding_;
     // not reflected in native descriptors
 }
+
+void wxNativeFontInfo::SetStrikethrough(bool WXUNUSED(strikethrough))
+{
+}
+
+