X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/223d09f6b523aac674ef9b72a883dfa8d37c5d4e..9ef3e400e02320aecf2ac883f0b58ad3a01932b3:/src/common/fontcmn.cpp diff --git a/src/common/fontcmn.cpp b/src/common/fontcmn.cpp index c27bb8d92b..a5ff16a10f 100644 --- a/src/common/fontcmn.cpp +++ b/src/common/fontcmn.cpp @@ -1,12 +1,12 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: common/fontcmn.cpp +// Name: src/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 ///////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -24,24 +24,115 @@ #pragma hdrstop #endif +#include "wx/font.h" + #ifndef WX_PRECOMP - #include "wx/font.h" + #include "wx/dc.h" + #include "wx/intl.h" + #include "wx/dcscreen.h" + #include "wx/log.h" + #include "wx/gdicmn.h" #endif // WX_PRECOMP +#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/fontenum.h" + +#include "wx/tokenzr.h" + // ============================================================================ // implementation // ============================================================================ +// ---------------------------------------------------------------------------- +// helper functions +// ---------------------------------------------------------------------------- + +static void AdjustFontSize(wxFont& font, wxDC& dc, const wxSize& pixelSize) +{ + int largestGood = 0; + int smallestBad = 0; + + bool initialGoodFound = false; + bool initialBadFound = false; + + // NB: this assignment was separated from the variable definition + // in order to fix a gcc v3.3.3 compiler crash + int currentSize = font.GetPointSize(); + 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; +/* 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, - int weight, + wxFontFamily family, + wxFontStyle style, + wxFontWeight weight, bool underlined, const wxString& face, wxFontEncoding encoding) @@ -49,23 +140,204 @@ wxFont *wxFontBase::New(int size, return new wxFont(size, family, style, weight, underlined, face, encoding); } -wxFont& wxFont::operator=(const wxFont& font) +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) { - if ( this != &font ) - Ref(font); + return flags & wxFONTFLAG_LIGHT + ? wxFONTWEIGHT_LIGHT + : flags & wxFONTFLAG_BOLD + ? wxFONTWEIGHT_BOLD + : wxFONTWEIGHT_NORMAL; +} - return (wxFont &)*this; +static inline bool flags2Underlined(int flags) +{ + return (flags & wxFONTFLAG_UNDERLINED) != 0; } -// VZ: is it correct to compare pointers and not the contents? (FIXME) -bool wxFontBase::operator==(const wxFont& font) const +/* 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, + wxFontFamily family, + wxFontStyle style, + wxFontWeight 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(); + wxASSERT_MSG(!fontDesc.empty(), wxT("This should be a non-empty string!")); + } + else + { + wxFAIL_MSG(wxT("Derived class should have created the wxNativeFontInfo!")); + } + + return fontDesc; +} + +wxString wxFontBase::GetNativeFontInfoUserDesc() const +{ + wxString fontDesc; + const wxNativeFontInfo *fontInfo = GetNativeFontInfo(); + if ( fontInfo ) + { + fontDesc = fontInfo->ToUserString(); + wxASSERT_MSG(!fontDesc.empty(), wxT("This should be a non-empty string!")); + } + else + { + wxFAIL_MSG(wxT("Derived class should have created the wxNativeFontInfo!")); + } + + return fontDesc; +} + +bool wxFontBase::SetNativeFontInfo(const wxString& info) { - return GetFontData() == font.GetFontData(); + wxNativeFontInfo fontInfo; + if ( !info.empty() && fontInfo.FromString(info) ) + { + SetNativeFontInfo(fontInfo); + return true; + } + + return false; } -bool wxFontBase::operator!=(const wxFont& font) const +bool wxFontBase::SetNativeFontInfoUserDesc(const wxString& info) { - return GetFontData() != font.GetFontData(); + wxNativeFontInfo fontInfo; + if ( !info.empty() && fontInfo.FromUserString(info) ) + { + SetNativeFontInfo(fontInfo); + return true; + } + + return false; +} + +bool wxFontBase::operator==(const wxFont& font) const +{ + // 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 IsSameAs(font) || + ( + Ok() == font.Ok() && + GetPointSize() == font.GetPointSize() && + // in wxGTK1 GetPixelSize() calls GetInternalFont() which uses + // operator==() resulting in infinite recursion so we can't use it + // in that port +#if !defined(__WXGTK__) || defined(__WXGTK20__) + GetPixelSize() == font.GetPixelSize() && +#endif + GetFamily() == font.GetFamily() && + GetStyle() == font.GetStyle() && + GetWeight() == font.GetWeight() && + GetUnderlined() == font.GetUnderlined() && + GetFaceName().IsSameAs(font.GetFaceName(), false) && + GetEncoding() == font.GetEncoding() + ); } wxString wxFontBase::GetFamilyString() const @@ -110,3 +382,437 @@ wxString wxFontBase::GetWeightString() const } } +bool wxFontBase::SetFaceName(const wxString& facename) +{ +#if wxUSE_FONTENUM + if (!wxFontEnumerator::IsValidFacename(facename)) + { + UnRef(); // make Ok() return false + return false; + } +#else // !wxUSE_FONTENUM + wxUnusedVar(facename); +#endif // wxUSE_FONTENUM/!wxUSE_FONTENUM + + return true; +} + + +// ---------------------------------------------------------------------------- +// wxNativeFontInfo +// ---------------------------------------------------------------------------- + +// Up to now, there are no native implementations of this function: +void wxNativeFontInfo::SetFaceName(const wxArrayString& facenames) +{ +#if wxUSE_FONTENUM + for (size_t i=0; i < facenames.GetCount(); i++) + { + if (wxFontEnumerator::IsValidFacename(facenames[i])) + { + SetFaceName(facenames[i]); + return; + } + } + + // set the first valid facename we can find on this system + wxString validfacename = wxFontEnumerator::GetFacenames().Item(0); + wxLogTrace(wxT("font"), wxT("Falling back to '%s'"), validfacename.c_str()); + SetFaceName(validfacename); +#else // !wxUSE_FONTENUM + SetFaceName(facenames[0]); +#endif // wxUSE_FONTENUM/!wxUSE_FONTENUM +} + + +#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_; +} + +bool wxNativeFontInfo::SetFaceName(const wxString& facename_) +{ + faceName = facename_; + return true; +} + +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() ) + { + 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::GetEncodingName(enc); + } +#endif // wxUSE_FONTMAP + + return desc.Strip(wxString::both).MakeLower(); +} + +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; + bool weightfound = false, pointsizefound = false; +#if wxUSE_FONTMAP + bool encodingfound = false; +#endif + + 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); + weightfound = true; + } + else if ( token == _T("bold") || token == _("bold") ) + { + SetWeight(wxFONTWEIGHT_BOLD); + weightfound = true; + } + else if ( token == _T("italic") || token == _("italic") ) + { + SetStyle(wxFONTSTYLE_ITALIC); + } + else if ( token.ToULong(&size) ) + { + SetPointSize(size); + pointsizefound = true; + } + else + { +#if wxUSE_FONTMAP + // try to interpret this as an encoding + wxFontEncoding encoding = wxFontMapper::Get()->CharsetToEncoding(token, false); + if ( encoding != wxFONTENCODING_DEFAULT && + encoding != wxFONTENCODING_SYSTEM ) // returned when the recognition failed + { + SetEncoding(encoding); + encodingfound = true; + } + else + { +#endif // wxUSE_FONTMAP + + // assume it is the face name + if ( !face.empty() ) + { + face += _T(' '); + } + + face += token; + + // skip the code which resets face below + continue; + +#if wxUSE_FONTMAP + } +#endif // wxUSE_FONTMAP + } + + // 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() ) + { + // NB: the check on the facename is implemented in wxFontBase::SetFaceName + // and not in wxNativeFontInfo::SetFaceName thus we need to explicitely + // call here wxFontEnumerator::IsValidFacename + if ( +#if wxUSE_FONTENUM + !wxFontEnumerator::IsValidFacename(face) || +#endif // wxUSE_FONTENUM + !SetFaceName(face) ) + { + SetFaceName(wxNORMAL_FONT->GetFaceName()); + } + + face.clear(); + } + } + + // we might not have flushed it inside the loop + if ( !face.empty() ) + { + // NB: the check on the facename is implemented in wxFontBase::SetFaceName + // and not in wxNativeFontInfo::SetFaceName thus we need to explicitely + // call here wxFontEnumerator::IsValidFacename + if ( +#if wxUSE_FONTENUM + !wxFontEnumerator::IsValidFacename(face) || +#endif // wxUSE_FONTENUM + !SetFaceName(face) ) + { + SetFaceName(wxNORMAL_FONT->GetFaceName()); + } + } + + // set point size to default value if size was not given + if ( !pointsizefound ) + SetPointSize(wxNORMAL_FONT->GetPointSize()); + + // set font weight to default value if weight was not given + if ( !weightfound ) + SetWeight(wxFONTWEIGHT_NORMAL); + +#if wxUSE_FONTMAP + // set font encoding to default value if encoding was not given + if ( !encodingfound ) + SetEncoding(wxFONTENCODING_SYSTEM); +#endif // wxUSE_FONTMAP + + return true; +} + +#endif // generic or wxMSW or wxOS2 + + +// wxFont <-> wxString utilities, used by wxConfig +wxString wxToString(const wxFontBase& font) +{ + return font.IsOk() ? font.GetNativeFontInfoDesc() + : wxString(); +} + +bool wxFromString(const wxString& str, wxFontBase *font) +{ + wxCHECK_MSG( font, false, _T("NULL output parameter") ); + + if ( str.empty() ) + { + *font = wxNullFont; + return true; + } + + return font->SetNativeFontInfo(str); +} + +