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adding fallbacks for non-native font variants, fixes #11938

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63963 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor 2010-04-13 12:08:51 +00:00
parent ca9047f7ad
commit d0a7d7b1af
2 changed files with 103 additions and 4 deletions
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47
src/osx/carbon/font.cpp
View File

@ -454,6 +454,9 @@ 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 )
@ -481,9 +484,47 @@ void wxFontRefData::MacFindFont()
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 )
{
m_ctFont.reset(CTFontCreateCopyWithSymbolicTraits( m_ctFont, 0, NULL, traits, traits ));
// TODO try fallbacks according to font type
m_ctFont.reset(CTFontCreateUIFontForLanguage( kCTFontSystemFontType, m_info.m_pointSize , NULL ));
}
else
{
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);
}
}
}
@ -859,7 +900,7 @@ const wxNativeFontInfo * wxFont::GetNativeFontInfo() const
// wxNativeFontInfo
// ----------------------------------------------------------------------------
#if wxOSX_USE_CORE_TEXT
#if 0 // wxOSX_USE_CORE_TEXT
/* from Core Text Manual Common Operations */

60
src/osx/carbon/utilscocoa.mm
View File

@ -188,6 +188,9 @@ WX_NSFont wxFont::OSXCreateNSFont(wxOSXSystemFont font, wxNativeFontInfo* info)
return nsfont;
}
static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
static const NSAffineTransformStruct kSlantNSTransformStruct = { 1, 0, tan(DegToRad(11)), 1, 0, 0 };
WX_NSFont wxFont::OSXCreateNSFont(const wxNativeFontInfo* info)
{
NSFont* nsFont;
@ -206,7 +209,62 @@ WX_NSFont wxFont::OSXCreateNSFont(const wxNativeFontInfo* info)
nsFont = [[NSFontManager sharedFontManager] fontWithFamily:wxCFStringRef(info->m_faceName).AsNSString()
traits:traits weight:weight size:info->m_pointSize];
if ( nsFont == nil )
{
NSFontTraitMask remainingTraits = traits;
nsFont = [[NSFontManager sharedFontManager] fontWithFamily:wxCFStringRef(info->m_faceName).AsNSString()
traits:0 weight:5 size:info->m_pointSize];
if ( nsFont == nil )
{
if ( info->m_weight == wxFONTWEIGHT_BOLD )
{
nsFont = [NSFont boldSystemFontOfSize:info->m_pointSize];
remainingTraits &= ~NSBoldFontMask;
}
else
nsFont = [NSFont systemFontOfSize:info->m_pointSize];
}
// fallback - if in doubt, let go of the bold attribute
if ( nsFont && (remainingTraits & NSItalicFontMask) )
{
NSFont* nsFontWithTraits = nil;
if ( remainingTraits & NSBoldFontMask)
{
nsFontWithTraits = [[NSFontManager sharedFontManager] convertFont:nsFont toHaveTrait:NSBoldFontMask];
if ( nsFontWithTraits == nil )
{
nsFontWithTraits = [[NSFontManager sharedFontManager] convertFont:nsFont toHaveTrait:NSItalicFontMask];
if ( nsFontWithTraits != nil )
remainingTraits &= ~NSItalicFontMask;
}
else
{
remainingTraits &= ~NSBoldFontMask;
}
}
if ( remainingTraits & NSItalicFontMask)
{
if ( nsFontWithTraits == nil )
nsFontWithTraits = nsFont;
NSAffineTransform* transform = [NSAffineTransform transform];
[transform setTransformStruct:kSlantNSTransformStruct];
[transform scaleBy:info->m_pointSize];
NSFontDescriptor* italicDesc = [[nsFontWithTraits fontDescriptor] fontDescriptorWithMatrix:transform];
if ( italicDesc != nil )
{
NSFont* f = [NSFont fontWithDescriptor:italicDesc size:(CGFloat)(info->m_pointSize)];
if ( f != nil )
nsFontWithTraits = f;
}
}
if ( nsFontWithTraits != nil )
nsFont = nsFontWithTraits;
}
}
wxASSERT_MSG(nsFont != nil,wxT("Couldn't create nsFont")) ;
wxMacCocoaRetain(nsFont);
return nsFont;