fixed MSVC6 warning

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

diff --git a/src/common/fontcmn.cpp b/src/common/fontcmn.cpp
index 57a8cf3cc7807125e3523c90e432725609c82c7a..dd3544a26be36ee1f82b80d4debab44528168ea4 100644 (file)
--- a/src/common/fontcmn.cpp
+++ b/src/common/fontcmn.cpp
@@ -1,12 +1,12 @@
-/////////////////////////////////////////////////////////////////////////////
+       /////////////////////////////////////////////////////////////////////////////

 // Name:        common/fontcmn.cpp
 // Purpose:     implementation of wxFontBase methods
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     20.09.99
 // RCS-ID:      $Id$
 // Name:        common/fontcmn.cpp
 // Purpose:     implementation of wxFontBase methods
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     20.09.99
 // RCS-ID:      $Id$

-// Copyright:   (c) wxWindows team
-// Licence:     wxWindows license
+// Copyright:   (c) wxWidgets team
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -17,27 +17,117 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
+#pragma implementation "fontbase.h"
+#endif
+

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-    #pragma hdrstop
+#pragma hdrstop

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

+    #include "wx/intl.h"
+    #include "wx/dcscreen.h"

 #endif // WX_PRECOMP
 
 #endif // WX_PRECOMP
 

+#include "wx/gdicmn.h"
+
+#if defined(__WXMSW__)
+  #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
+  #include  "wx/msw/winundef.h"
+#endif
+
+#include "wx/fontutil.h" // for wxNativeFontInfo
+#include "wx/fontmap.h"
+
+#include "wx/tokenzr.h"
+

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

+// ----------------------------------------------------------------------------
+// helper functions
+// ----------------------------------------------------------------------------
+
+static void AdjustFontSize(wxFont font, wxDC& dc, const wxSize& pixelSize)
+{
+    int currentSize = font.GetPointSize();
+    int largestGood wxDUMMY_INITIALIZE(0);
+    int smallestBad wxDUMMY_INITIALIZE(0);
+
+    bool initialGoodFound = false;
+    bool initialBadFound = false;
+
+    while (currentSize > 0)
+    {
+        dc.SetFont(font);
+
+        // if currentSize (in points) results in a font that is smaller
+        // than required by pixelSize it is considered a good size
+        if (dc.GetCharHeight() <= pixelSize.GetHeight() &&
+                (!pixelSize.GetWidth() ||
+                 dc.GetCharWidth() <= pixelSize.GetWidth()))
+        {
+            largestGood = currentSize;
+            initialGoodFound = true;
+        }
+        else
+        {
+            smallestBad = currentSize;
+            initialBadFound = true;
+        }
+        if (!initialGoodFound)
+        {
+            currentSize /= 2;
+        }
+        else if (!initialBadFound)
+        {
+            currentSize *= 2;
+        }
+        else
+        {
+            int distance = smallestBad - largestGood;
+            if (distance == 1)
+                break;
+
+            currentSize = largestGood + distance / 2;
+        }
+
+        font.SetPointSize(currentSize);
+    }
+
+    if (currentSize != largestGood)
+        font.SetPointSize(largestGood);
+}
+

 // ----------------------------------------------------------------------------
 // wxFontBase
 // ----------------------------------------------------------------------------
 
 wxFontEncoding wxFontBase::ms_encodingDefault = wxFONTENCODING_SYSTEM;
 
 // ----------------------------------------------------------------------------
 // wxFontBase
 // ----------------------------------------------------------------------------
 
 wxFontEncoding wxFontBase::ms_encodingDefault = wxFONTENCODING_SYSTEM;
 

+/* static */
+void wxFontBase::SetDefaultEncoding(wxFontEncoding encoding)
+{
+    // GetDefaultEncoding() should return something != wxFONTENCODING_DEFAULT
+    // and, besides, using this value here doesn't make any sense
+    wxCHECK_RET( encoding != wxFONTENCODING_DEFAULT,
+                 _T("can't set default encoding to wxFONTENCODING_DEFAULT") );
+
+    ms_encodingDefault = encoding;
+}
+
+wxFontBase::~wxFontBase()
+{
+    // this destructor is required for Darwin
+}
+
+/* static */

 wxFont *wxFontBase::New(int size,
                         int family,
                         int style,
 wxFont *wxFontBase::New(int size,
                         int family,
                         int style,


@@ -49,6 +139,167 @@ wxFont *wxFontBase::New(int size,
     return new wxFont(size, family, style, weight, underlined, face, encoding);
 }
 
     return new wxFont(size, family, style, weight, underlined, face, encoding);
 }
 

+static inline int flags2Style(int flags)
+{
+    return flags & wxFONTFLAG_ITALIC
+                    ? wxFONTSTYLE_ITALIC
+                    : flags & wxFONTFLAG_SLANT
+                        ? wxFONTSTYLE_SLANT
+                        : wxFONTSTYLE_NORMAL;
+}
+
+static inline int flags2Weight(int flags)
+{
+    return flags & wxFONTFLAG_LIGHT
+                    ? wxFONTWEIGHT_LIGHT
+                    : flags & wxFONTFLAG_BOLD
+                        ? wxFONTWEIGHT_BOLD
+                        : wxFONTWEIGHT_NORMAL;
+}
+
+static inline bool flags2Underlined(int flags)
+{
+    return (flags & wxFONTFLAG_UNDERLINED) != 0;
+}
+
+/* static */
+wxFont *wxFontBase::New(int pointSize,
+                        wxFontFamily family,
+                        int flags,
+                        const wxString& face,
+                        wxFontEncoding encoding)
+{
+    return New(pointSize, family, flags2Style(flags), flags2Weight(flags),
+               flags2Underlined(flags), face, encoding);
+}
+
+/* static */
+wxFont *wxFontBase::New(const wxSize& pixelSize,
+                        int family,
+                        int style,
+                        int weight,
+                        bool underlined,
+                        const wxString& face,
+                        wxFontEncoding encoding)
+{
+#if defined(__WXMSW__)
+    return new wxFont(pixelSize, family, style, weight, underlined,
+                      face, encoding);
+#else
+    wxFont *self = New(10, family, style, weight, underlined, face, encoding);
+    wxScreenDC dc;
+    AdjustFontSize(*(wxFont *)self, dc, pixelSize);
+    return self;
+#endif
+}
+
+/* static */
+wxFont *wxFontBase::New(const wxSize& pixelSize,
+                        wxFontFamily family,
+                        int flags,
+                        const wxString& face,
+                        wxFontEncoding encoding)
+{
+    return New(pixelSize, family, flags2Style(flags), flags2Weight(flags),
+               flags2Underlined(flags), face, encoding);
+}
+
+wxSize wxFontBase::GetPixelSize() const
+{
+    wxScreenDC dc;
+    dc.SetFont(*(wxFont *)this);
+    return wxSize(dc.GetCharWidth(), dc.GetCharHeight());
+}
+
+bool wxFontBase::IsUsingSizeInPixels() const
+{
+    return false;
+}
+
+void wxFontBase::SetPixelSize( const wxSize& pixelSize )
+{
+    wxScreenDC dc;
+    AdjustFontSize(*(wxFont *)this, dc, pixelSize);
+}
+
+/* static */
+wxFont *wxFontBase::New(const wxNativeFontInfo& info)
+{
+    return new wxFont(info);
+}
+
+/* static */
+wxFont *wxFontBase::New(const wxString& strNativeFontDesc)
+{
+    wxNativeFontInfo fontInfo;
+    if ( !fontInfo.FromString(strNativeFontDesc) )
+        return new wxFont(*wxNORMAL_FONT);
+
+    return New(fontInfo);
+}
+
+bool wxFontBase::IsFixedWidth() const
+{
+    return GetFamily() == wxFONTFAMILY_TELETYPE;
+}
+
+void wxFontBase::DoSetNativeFontInfo(const wxNativeFontInfo& info)
+{
+#ifdef wxNO_NATIVE_FONTINFO
+    SetPointSize(info.pointSize);
+    SetFamily(info.family);
+    SetStyle(info.style);
+    SetWeight(info.weight);
+    SetUnderlined(info.underlined);
+    SetFaceName(info.faceName);
+    SetEncoding(info.encoding);
+#else
+    (void)info;
+#endif
+}
+
+wxString wxFontBase::GetNativeFontInfoDesc() const
+{
+    wxString fontDesc;
+    const wxNativeFontInfo *fontInfo = GetNativeFontInfo();
+    if ( fontInfo )
+    {
+        fontDesc = fontInfo->ToString();
+    }
+
+    return fontDesc;
+}
+
+wxString wxFontBase::GetNativeFontInfoUserDesc() const
+{
+    wxString fontDesc;
+    const wxNativeFontInfo *fontInfo = GetNativeFontInfo();
+    if ( fontInfo )
+    {
+        fontDesc = fontInfo->ToUserString();
+    }
+
+    return fontDesc;
+}
+
+void wxFontBase::SetNativeFontInfo(const wxString& info)
+{
+    wxNativeFontInfo fontInfo;
+    if ( !info.empty() && fontInfo.FromString(info) )
+    {
+        SetNativeFontInfo(fontInfo);
+    }
+}
+
+void wxFontBase::SetNativeFontInfoUserDesc(const wxString& info)
+{
+    wxNativeFontInfo fontInfo;
+    if ( !info.empty() && fontInfo.FromUserString(info) )
+    {
+        SetNativeFontInfo(fontInfo);
+    }
+}
+

 wxFont& wxFont::operator=(const wxFont& font)
 {
     if ( this != &font )
 wxFont& wxFont::operator=(const wxFont& font)
 {
     if ( this != &font )


@@ -57,56 +308,390 @@ wxFont& wxFont::operator=(const wxFont& font)
     return (wxFont &)*this;
 }
 
     return (wxFont &)*this;
 }
 

-// VZ: is it correct to compare pointers and not the contents? (FIXME)

 bool wxFontBase::operator==(const wxFont& font) const
 {
 bool wxFontBase::operator==(const wxFont& font) const
 {

-    return m_refData == font.m_refData;
+    // either it is the same font, i.e. they share the same common data or they
+    // have different ref datas but still describe the same font
+    return GetFontData() == font.GetFontData() ||
+           (
+            Ok() == font.Ok() &&
+            GetPointSize() == font.GetPointSize() &&
+            GetFamily() == font.GetFamily() &&
+            GetStyle() == font.GetStyle() &&
+            GetWeight() == font.GetWeight() &&
+            GetUnderlined() == font.GetUnderlined() &&
+            GetFaceName() == font.GetFaceName() &&
+            GetEncoding() == font.GetEncoding()
+           );

 }
 
 bool wxFontBase::operator!=(const wxFont& font) const
 {
 }
 
 bool wxFontBase::operator!=(const wxFont& font) const
 {

-    return m_refData != font.m_refData;
+    return !(*this == font);

 }
 
 wxString wxFontBase::GetFamilyString() const
 {
 }
 
 wxString wxFontBase::GetFamilyString() const
 {

-    wxCHECK_MSG( Ok(), _T("wxDEFAULT"), _T("invalid font") );
+    wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );

 
     switch ( GetFamily() )
     {
 
     switch ( GetFamily() )
     {

-        case wxDECORATIVE:   return _T("wxDECORATIVE");
-        case wxROMAN:        return _T("wxROMAN");
-        case wxSCRIPT:       return _T("wxSCRIPT");
-        case wxSWISS:        return _T("wxSWISS");
-        case wxMODERN:       return _T("wxMODERN");
-        case wxTELETYPE:     return _T("wxTELETYPE");
-        default:             return _T("wxDEFAULT");
+        case wxDECORATIVE:   return wxT("wxDECORATIVE");
+        case wxROMAN:        return wxT("wxROMAN");
+        case wxSCRIPT:       return wxT("wxSCRIPT");
+        case wxSWISS:        return wxT("wxSWISS");
+        case wxMODERN:       return wxT("wxMODERN");
+        case wxTELETYPE:     return wxT("wxTELETYPE");
+        default:             return wxT("wxDEFAULT");

     }
 }
 
 wxString wxFontBase::GetStyleString() const
 {
     }
 }
 
 wxString wxFontBase::GetStyleString() const
 {

-    wxCHECK_MSG( Ok(), _T("wxDEFAULT"), _T("invalid font") );
+    wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );

 
     switch ( GetStyle() )
     {
 
     switch ( GetStyle() )
     {

-        case wxNORMAL:   return _T("wxNORMAL");
-        case wxSLANT:    return _T("wxSLANT");
-        case wxITALIC:   return _T("wxITALIC");
-        default:         return _T("wxDEFAULT");
+        case wxNORMAL:   return wxT("wxNORMAL");
+        case wxSLANT:    return wxT("wxSLANT");
+        case wxITALIC:   return wxT("wxITALIC");
+        default:         return wxT("wxDEFAULT");

     }
 }
 
 wxString wxFontBase::GetWeightString() const
 {
     }
 }
 
 wxString wxFontBase::GetWeightString() const
 {

-    wxCHECK_MSG( Ok(), _T("wxDEFAULT"), _T("invalid font") );
+    wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );
+
+    switch ( GetWeight() )
+    {
+        case wxNORMAL:   return wxT("wxNORMAL");
+        case wxBOLD:     return wxT("wxBOLD");
+        case wxLIGHT:    return wxT("wxLIGHT");
+        default:         return wxT("wxDEFAULT");
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxNativeFontInfo
+// ----------------------------------------------------------------------------
+
+#ifdef wxNO_NATIVE_FONTINFO
+
+// These are the generic forms of FromString()/ToString.
+//
+// convert to/from the string representation: format is
+//      version;pointsize;family;style;weight;underlined;facename;encoding
+
+bool wxNativeFontInfo::FromString(const wxString& s)
+{
+    long l;
+
+    wxStringTokenizer tokenizer(s, _T(";"));
+
+    wxString token = tokenizer.GetNextToken();
+    //
+    //  Ignore the version for now
+    //
+
+    token = tokenizer.GetNextToken();
+    if ( !token.ToLong(&l) )
+        return false;
+    pointSize = (int)l;
+
+    token = tokenizer.GetNextToken();
+    if ( !token.ToLong(&l) )
+        return false;
+    family = (wxFontFamily)l;
+
+    token = tokenizer.GetNextToken();
+    if ( !token.ToLong(&l) )
+        return false;
+    style = (wxFontStyle)l;
+
+    token = tokenizer.GetNextToken();
+    if ( !token.ToLong(&l) )
+        return false;
+    weight = (wxFontWeight)l;
+
+    token = tokenizer.GetNextToken();
+    if ( !token.ToLong(&l) )
+        return false;
+    underlined = l != 0;
+
+    faceName = tokenizer.GetNextToken();
+
+#ifndef __WXMAC__
+    if( !faceName )
+        return false;
+#endif
+
+    token = tokenizer.GetNextToken();
+    if ( !token.ToLong(&l) )
+        return false;
+    encoding = (wxFontEncoding)l;
+
+    return true;
+}
+
+wxString wxNativeFontInfo::ToString() const
+{
+    wxString s;
+
+    s.Printf(_T("%d;%d;%d;%d;%d;%d;%s;%d"),
+             0,                                 // version
+             pointSize,
+             family,
+             (int)style,
+             (int)weight,
+             underlined,
+             faceName.GetData(),
+             (int)encoding);
+
+    return s;
+}
+
+void wxNativeFontInfo::Init()
+{
+    pointSize = 0;
+    family = wxFONTFAMILY_DEFAULT;
+    style = wxFONTSTYLE_NORMAL;
+    weight = wxFONTWEIGHT_NORMAL;
+    underlined = false;
+    faceName.clear();
+    encoding = wxFONTENCODING_DEFAULT;
+}
+
+int wxNativeFontInfo::GetPointSize() const
+{
+    return pointSize;
+}
+
+wxFontStyle wxNativeFontInfo::GetStyle() const
+{
+    return style;
+}
+
+wxFontWeight wxNativeFontInfo::GetWeight() const
+{
+    return weight;
+}
+
+bool wxNativeFontInfo::GetUnderlined() const
+{
+    return underlined;
+}
+
+wxString wxNativeFontInfo::GetFaceName() const
+{
+    return faceName;
+}
+
+wxFontFamily wxNativeFontInfo::GetFamily() const
+{
+    return family;
+}
+
+wxFontEncoding wxNativeFontInfo::GetEncoding() const
+{
+    return encoding;
+}
+
+void wxNativeFontInfo::SetPointSize(int pointsize)
+{
+    pointSize = pointsize;
+}
+
+void wxNativeFontInfo::SetStyle(wxFontStyle style_)
+{
+    style = style_;
+}
+
+void wxNativeFontInfo::SetWeight(wxFontWeight weight_)
+{
+    weight = weight_;
+}
+
+void wxNativeFontInfo::SetUnderlined(bool underlined_)
+{
+    underlined = underlined_;
+}
+
+void wxNativeFontInfo::SetFaceName(wxString facename_)
+{
+    faceName = facename_;
+}
+
+void wxNativeFontInfo::SetFamily(wxFontFamily family_)
+{
+    family = family_;
+}
+
+void wxNativeFontInfo::SetEncoding(wxFontEncoding encoding_)
+{
+    encoding = encoding_;
+}
+
+#endif // generic wxNativeFontInfo implementation
+
+// conversion to/from user-readable string: this is used in the generic
+// versions and under MSW as well because there is no standard font description
+// format there anyhow (but there is a well-defined standard for X11 fonts used
+// by wxGTK and wxMotif)
+
+#if defined(wxNO_NATIVE_FONTINFO) || defined(__WXMSW__) || defined (__WXPM__)
+
+wxString wxNativeFontInfo::ToUserString() const
+{
+    wxString desc;
+
+    // first put the adjectives, if any - this is English-centric, of course,
+    // but what else can we do?
+    if ( GetUnderlined() )
+    {
+        desc << _("underlined ");
+    }

 
     switch ( GetWeight() )
     {
 
     switch ( GetWeight() )
     {

-        case wxNORMAL:   return _T("wxNORMAL");
-        case wxBOLD:     return _T("wxBOLD");
-        case wxLIGHT:    return _T("wxLIGHT");
-        default:         return _T("wxDEFAULT");
+        default:
+            wxFAIL_MSG( _T("unknown font weight") );
+            // fall through
+
+        case wxFONTWEIGHT_NORMAL:
+            break;
+
+        case wxFONTWEIGHT_LIGHT:
+            desc << _("light ");
+            break;
+
+        case wxFONTWEIGHT_BOLD:
+            desc << _("bold ");
+            break;
+    }
+
+    switch ( GetStyle() )
+    {
+        default:
+            wxFAIL_MSG( _T("unknown font style") );
+            // fall through
+
+        case wxFONTSTYLE_NORMAL:
+            break;
+
+            // we don't distinguish between the two for now anyhow...
+        case wxFONTSTYLE_ITALIC:
+        case wxFONTSTYLE_SLANT:
+            desc << _("italic");
+            break;
+    }
+
+    wxString face = GetFaceName();
+    if ( !face.empty() )
+    {
+        desc << _T(' ') << face;
+    }
+
+    int size = GetPointSize();
+    if ( size != wxNORMAL_FONT->GetPointSize() )
+    {
+        desc << _T(' ') << size;
+    }
+
+#if wxUSE_FONTMAP
+    wxFontEncoding enc = GetEncoding();
+    if ( enc != wxFONTENCODING_DEFAULT && enc != wxFONTENCODING_SYSTEM )
+    {
+        desc << _T(' ') << wxFontMapper::Get()->GetEncodingName(enc);
+    }
+#endif // wxUSE_FONTMAP
+
+    return desc;
+}
+
+bool wxNativeFontInfo::FromUserString(const wxString& s)
+{
+    // reset to the default state
+    Init();
+
+    // parse a more or less free form string
+    //
+    // TODO: we should handle at least the quoted facenames
+    wxStringTokenizer tokenizer(s, _T(";, "), wxTOKEN_STRTOK);
+
+    wxString face;
+    unsigned long size;
+
+#if wxUSE_FONTMAP
+    wxFontEncoding encoding;
+#endif // wxUSE_FONTMAP
+
+    while ( tokenizer.HasMoreTokens() )
+    {
+        wxString token = tokenizer.GetNextToken();
+
+        // normalize it
+        token.Trim(true).Trim(false).MakeLower();
+
+        // look for the known tokens
+        if ( token == _T("underlined") || token == _("underlined") )
+        {
+            SetUnderlined(true);
+        }
+        else if ( token == _T("light") || token == _("light") )
+        {
+            SetWeight(wxFONTWEIGHT_LIGHT);
+        }
+        else if ( token == _T("bold") || token == _("bold") )
+        {
+            SetWeight(wxFONTWEIGHT_BOLD);
+        }
+        else if ( token == _T("italic") || token == _("italic") )
+        {
+            SetStyle(wxFONTSTYLE_ITALIC);
+        }
+        else if ( token.ToULong(&size) )
+        {
+            SetPointSize(size);
+        }
+#if wxUSE_FONTMAP
+        else if ( (encoding = wxFontMapper::Get()->CharsetToEncoding(token, false))
+                    != wxFONTENCODING_DEFAULT )
+        {
+            SetEncoding(encoding);
+        }
+#endif // wxUSE_FONTMAP
+        else // assume it is the face name
+        {
+            if ( !face.empty() )
+            {
+                face += _T(' ');
+            }
+
+            face += token;
+
+            // skip the code which resets face below
+            continue;
+        }
+
+        // if we had had the facename, we shouldn't continue appending tokens
+        // to it (i.e. "foo bold bar" shouldn't result in the facename "foo
+        // bar")
+        if ( !face.empty() )
+        {
+            SetFaceName(face);
+            face.clear();
+        }
+    }
+
+    // we might not have flushed it inside the loop
+    if ( !face.empty() )
+    {
+        SetFaceName(face);

     }
     }

+
+    return true;

 }
 
 }
 

+#endif // generic or wxMSW or wxOS2
+