X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/dda88f5eee7ae13a328f92996847f90caed2e5e9..14722c43c30918cd8fbba956b50ac3426d2fe339:/src/gtk/font.cpp diff --git a/src/gtk/font.cpp b/src/gtk/font.cpp index a4e761d20c..06260392d9 100644 --- a/src/gtk/font.cpp +++ b/src/gtk/font.cpp @@ -1,9 +1,9 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: font.cpp -// Purpose: +// Name: src/gtk/font.cpp +// Purpose: wxFont for wxGTK // Author: Robert Roebling // Id: $Id$ -// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem +// Copyright: (c) 1998 Robert Roebling and Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -15,311 +15,326 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "font.h" -#endif +// For compilers that support precompilation, includes "wx.h". +#include "wx/wxprec.h" #include "wx/font.h" + +#ifndef WX_PRECOMP + #include "wx/log.h" + #include "wx/utils.h" + #include "wx/settings.h" + #include "wx/gdicmn.h" +#endif + #include "wx/fontutil.h" -#include "wx/cmndata.h" -#include "wx/utils.h" -#include "wx/log.h" -#include "wx/gdicmn.h" #include "wx/tokenzr.h" -#include "wx/settings.h" -#include +#include "wx/gtk/private.h" -#include -#include -#include +// ---------------------------------------------------------------------------- +// constants +// ---------------------------------------------------------------------------- + +// the default size (in points) for the fonts +static const int wxDEFAULT_FONT_SIZE = 12; // ---------------------------------------------------------------------------- // wxFontRefData // ---------------------------------------------------------------------------- -class wxFontRefData : public wxObjectRefData +class wxFontRefData : public wxGDIRefData { public: - wxFontRefData(int size = wxDEFAULT, - int family = wxDEFAULT, - int style = wxDEFAULT, - int weight = wxDEFAULT, - bool underlined = FALSE, + // from broken down font parameters, also default ctor + wxFontRefData(int size = -1, + wxFontFamily family = wxFONTFAMILY_DEFAULT, + wxFontStyle style = wxFONTSTYLE_NORMAL, + wxFontWeight weight = wxFONTWEIGHT_NORMAL, + bool underlined = false, + bool strikethrough = false, const wxString& faceName = wxEmptyString, wxFontEncoding encoding = wxFONTENCODING_DEFAULT); + + wxFontRefData(const wxString& nativeFontInfoString); + + // copy ctor wxFontRefData( const wxFontRefData& data ); + virtual ~wxFontRefData(); + // setters: all of them also take care to modify m_nativeFontInfo if we + // have it so as to not lose the information not carried by our fields + void SetPointSize(int pointSize); + void SetFamily(wxFontFamily family); + void SetStyle(wxFontStyle style); + void SetWeight(wxFontWeight weight); + void SetUnderlined(bool underlined); + void SetStrikethrough(bool strikethrough); + bool SetFaceName(const wxString& facename); + void SetEncoding(wxFontEncoding encoding); + + // and this one also modifies all the other font data fields + void SetNativeFontInfo(const wxNativeFontInfo& info); + protected: // common part of all ctors void Init(int pointSize, - int family, - int style, - int weight, + wxFontFamily family, + wxFontStyle style, + wxFontWeight weight, bool underlined, + bool strikethrough, const wxString& faceName, wxFontEncoding encoding); + // set all fields from (already initialized and valid) m_nativeFontInfo + void InitFromNative(); + private: - wxList m_scaled_xfonts; - int m_pointSize; - int m_family, - m_style, - m_weight; bool m_underlined; - wxString m_faceName; - wxFontEncoding m_encoding; - + bool m_strikethrough; + // The native font info: basically a PangoFontDescription wxNativeFontInfo m_nativeFontInfo; friend class wxFont; }; -// ============================================================================ -// implementation -// ============================================================================ +#define M_FONTDATA ((wxFontRefData*)m_refData) // ---------------------------------------------------------------------------- // wxFontRefData // ---------------------------------------------------------------------------- void wxFontRefData::Init(int pointSize, - int family, - int style, - int weight, + wxFontFamily family, + wxFontStyle style, + wxFontWeight weight, bool underlined, + bool strikethrough, const wxString& faceName, - wxFontEncoding encoding) + wxFontEncoding WXUNUSED(encoding)) { - if (family == wxDEFAULT) - m_family = wxSWISS; - else - m_family = family; + if (family == wxFONTFAMILY_DEFAULT) + family = wxFONTFAMILY_SWISS; - m_faceName = faceName; + m_underlined = underlined; + m_strikethrough = strikethrough; - if (style == wxDEFAULT) - m_style = wxNORMAL; - else - m_style = style; + // Create native font info + m_nativeFontInfo.description = pango_font_description_new(); - if (weight == wxDEFAULT) - m_weight = wxNORMAL; + // And set its values + if (!faceName.empty()) + { + pango_font_description_set_family( m_nativeFontInfo.description, + wxGTK_CONV_SYS(faceName) ); + } else - m_weight = weight; + { + SetFamily(family); + } - if (pointSize == wxDEFAULT) - m_pointSize = 12; - else - m_pointSize = pointSize; + SetStyle( style == wxDEFAULT ? wxFONTSTYLE_NORMAL : style ); + SetPointSize( (pointSize == wxDEFAULT || pointSize == -1) + ? wxDEFAULT_FONT_SIZE + : pointSize ); + SetWeight( weight == wxDEFAULT ? wxFONTWEIGHT_NORMAL : weight ); +} - m_underlined = underlined; - m_encoding = encoding; +void wxFontRefData::InitFromNative() +{ + // Get native info + PangoFontDescription *desc = m_nativeFontInfo.description; + + // Pango sometimes needs to have a size + int pango_size = pango_font_description_get_size( desc ); + if (pango_size == 0) + m_nativeFontInfo.SetPointSize(wxDEFAULT_FONT_SIZE); + + // Pango description are never underlined + m_underlined = false; + m_strikethrough = false; } wxFontRefData::wxFontRefData( const wxFontRefData& data ) - : m_scaled_xfonts(wxKEY_INTEGER) + : wxGDIRefData() { - Init(data.m_pointSize, data.m_family, data.m_style, data.m_weight, - data.m_underlined, data.m_faceName, data.m_encoding); + m_underlined = data.m_underlined; + m_strikethrough = data.m_strikethrough; + + // Forces a copy of the internal data. wxNativeFontInfo should probably + // have a copy ctor and assignment operator to fix this properly but that + // would break binary compatibility... + m_nativeFontInfo.FromString(data.m_nativeFontInfo.ToString()); } -wxFontRefData::wxFontRefData(int size, int family, int style, - int weight, bool underlined, +wxFontRefData::wxFontRefData(int size, wxFontFamily family, wxFontStyle style, + wxFontWeight weight, bool underlined, bool strikethrough, const wxString& faceName, wxFontEncoding encoding) - : m_scaled_xfonts(wxKEY_INTEGER) { - Init(size, family, style, weight, underlined, faceName, encoding); + Init(size, family, style, weight, underlined, strikethrough, faceName, encoding); +} + +wxFontRefData::wxFontRefData(const wxString& nativeFontInfoString) +{ + m_nativeFontInfo.FromString( nativeFontInfoString ); + + InitFromNative(); } wxFontRefData::~wxFontRefData() { - wxNode *node = m_scaled_xfonts.First(); - while (node) - { - GdkFont *font = (GdkFont*)node->Data(); - wxNode *next = node->Next(); - gdk_font_unref( font ); - node = next; - } } // ---------------------------------------------------------------------------- -// wxNativeFontInfo +// wxFontRefData SetXXX() // ---------------------------------------------------------------------------- -bool wxNativeFontInfo::FromString(const wxString& s) +void wxFontRefData::SetPointSize(int pointSize) { - xFontName = s; - return TRUE; + m_nativeFontInfo.SetPointSize(pointSize); } -wxString wxNativeFontInfo::ToString() const +/* + NOTE: disabled because pango_font_description_set_absolute_size() and + wxDC::GetCharHeight() do not mix well: setting with the former a pixel + size of "30" makes the latter return 36... + Besides, we need to return GetPointSize() a point size value even if + SetPixelSize() was used and this would require further changes + (and use of pango_font_description_get_size_is_absolute in some places). + +bool wxFontRefData::SetPixelSize(const wxSize& pixelSize) { - return xFontName; -} + wxCHECK_MSG( pixelSize.GetWidth() >= 0 && pixelSize.GetHeight() > 0, false, + "Negative values for the pixel size or zero pixel height are not allowed" ); -// ---------------------------------------------------------------------------- -// wxFont -// ---------------------------------------------------------------------------- + if (wx_pango_version_check(1,8,0) != NULL || + pixelSize.GetWidth() != 0) + { + // NOTE: pango_font_description_set_absolute_size() only sets the font height; + // if the user set the pixel width of the font explicitly or the pango + // library is too old, we cannot proceed + return false; + } -IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject) + pango_font_description_set_absolute_size( m_nativeFontInfo.description, + pixelSize.GetHeight() * PANGO_SCALE ); -void wxFont::Init() -{ - if (wxTheFontList) - wxTheFontList->Append( this ); + return true; } +*/ -wxFont::wxFont(const wxNativeFontInfo& info) +void wxFontRefData::SetFamily(wxFontFamily family) { - Init(); - - Create(info.ToString()); + m_nativeFontInfo.SetFamily(family); } -bool wxFont::Create(const wxNativeFontInfo& info) +void wxFontRefData::SetStyle(wxFontStyle style) { - return Create(info.xFontName); + m_nativeFontInfo.SetStyle(style); } -bool wxFont::Create( int pointSize, - int family, - int style, - int weight, - bool underlined, - const wxString& face, - wxFontEncoding encoding) +void wxFontRefData::SetWeight(wxFontWeight weight) { - m_refData = new wxFontRefData(pointSize, family, style, weight, - underlined, face, encoding); - - return TRUE; + m_nativeFontInfo.SetWeight(weight); } -bool wxFont::Create(const wxString& fontname, wxFontEncoding enc) +void wxFontRefData::SetUnderlined(bool underlined) { - if( !fontname ) - { - *this = wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT); - return TRUE; - } - - m_refData = new wxFontRefData(); - - M_FONTDATA->m_nativeFontInfo.xFontName = fontname; // X font name + m_underlined = underlined; - wxString tmp; + // the Pango font descriptor does not have an underlined attribute + // (and wxNativeFontInfo::SetUnderlined asserts); rather it's + // wxWindowDCImpl::DoDrawText that handles underlined fonts, so we + // here we just need to save the underlined attribute +} - wxStringTokenizer tn( fontname, wxT("-") ); +void wxFontRefData::SetStrikethrough(bool strikethrough) +{ + m_strikethrough = strikethrough; +} - tn.GetNextToken(); // skip initial empty token - tn.GetNextToken(); // foundry +bool wxFontRefData::SetFaceName(const wxString& facename) +{ + return m_nativeFontInfo.SetFaceName(facename); +} +void wxFontRefData::SetEncoding(wxFontEncoding WXUNUSED(encoding)) +{ + // with GTK+ 2 Pango always uses UTF8 internally, we cannot change it +} - M_FONTDATA->m_faceName = tn.GetNextToken(); // family +void wxFontRefData::SetNativeFontInfo(const wxNativeFontInfo& info) +{ + m_nativeFontInfo = info; - tmp = tn.GetNextToken().MakeUpper(); // weight - if (tmp == wxT("BOLD")) M_FONTDATA->m_weight = wxBOLD; - if (tmp == wxT("BLACK")) M_FONTDATA->m_weight = wxBOLD; - if (tmp == wxT("EXTRABOLD")) M_FONTDATA->m_weight = wxBOLD; - if (tmp == wxT("DEMIBOLD")) M_FONTDATA->m_weight = wxBOLD; - if (tmp == wxT("ULTRABOLD")) M_FONTDATA->m_weight = wxBOLD; + // set all the other font parameters from the native font info + InitFromNative(); +} - if (tmp == wxT("LIGHT")) M_FONTDATA->m_weight = wxLIGHT; - if (tmp == wxT("THIN")) M_FONTDATA->m_weight = wxLIGHT; +// ---------------------------------------------------------------------------- +// wxFont creation +// ---------------------------------------------------------------------------- - tmp = tn.GetNextToken().MakeUpper(); // slant - if (tmp == wxT("I")) M_FONTDATA->m_style = wxITALIC; - if (tmp == wxT("O")) M_FONTDATA->m_style = wxITALIC; +wxFont::wxFont(const wxNativeFontInfo& info) +{ + Create( info.GetPointSize(), + info.GetFamily(), + info.GetStyle(), + info.GetWeight(), + info.GetUnderlined(), + info.GetFaceName(), + info.GetEncoding() ); +} - tn.GetNextToken(); // set width - tn.GetNextToken(); // add. style - tn.GetNextToken(); // pixel size +wxFont::wxFont(int pointSize, + wxFontFamily family, + int flags, + const wxString& face, + wxFontEncoding encoding) +{ + m_refData = new wxFontRefData(pointSize, family, + GetStyleFromFlags(flags), + GetWeightFromFlags(flags), + GetUnderlinedFromFlags(flags), + false, face, encoding); +} - tmp = tn.GetNextToken(); // pointsize - if (tmp != wxT("*")) - { - long num = wxStrtol (tmp.c_str(), (wxChar **) NULL, 10); - M_FONTDATA->m_pointSize = (int)(num / 10); - } +bool wxFont::Create( int pointSize, + wxFontFamily family, + wxFontStyle style, + wxFontWeight weight, + bool underlined, + const wxString& face, + wxFontEncoding encoding ) +{ + UnRef(); - tn.GetNextToken(); // x-res - tn.GetNextToken(); // y-res - - tmp = tn.GetNextToken().MakeUpper(); // spacing - - if (tmp == wxT("M")) - M_FONTDATA->m_family = wxMODERN; - else if (M_FONTDATA->m_faceName == wxT("TIMES")) - M_FONTDATA->m_family = wxROMAN; - else if (M_FONTDATA->m_faceName == wxT("HELVETICA")) - M_FONTDATA->m_family = wxSWISS; - else if (M_FONTDATA->m_faceName == wxT("LUCIDATYPEWRITER")) - M_FONTDATA->m_family = wxTELETYPE; - else if (M_FONTDATA->m_faceName == wxT("LUCIDA")) - M_FONTDATA->m_family = wxDECORATIVE; - else if (M_FONTDATA->m_faceName == wxT("UTOPIA")) - M_FONTDATA->m_family = wxSCRIPT; - - tn.GetNextToken(); // avg width - - // deal with font encoding - M_FONTDATA->m_encoding = enc; - if ( M_FONTDATA->m_encoding == wxFONTENCODING_SYSTEM ) - { - wxString registry = tn.GetNextToken().MakeUpper(), - encoding = tn.GetNextToken().MakeUpper(); + m_refData = new wxFontRefData(pointSize, family, style, weight, + underlined, false, face, encoding); - if ( registry == _T("ISO8859") ) - { - int cp; - if ( wxSscanf(encoding, wxT("%d"), &cp) == 1 ) - { - M_FONTDATA->m_encoding = - (wxFontEncoding)(wxFONTENCODING_ISO8859_1 + cp - 1); - } - } - else if ( registry == _T("MICROSOFT") ) - { - int cp; - if ( wxSscanf(encoding, wxT("cp125%d"), &cp) == 1 ) - { - M_FONTDATA->m_encoding = - (wxFontEncoding)(wxFONTENCODING_CP1250 + cp); - } - } - else if ( registry == _T("KOI8") ) - { - M_FONTDATA->m_encoding = wxFONTENCODING_KOI8; - } - //else: unknown encoding - may be give a warning here? - else - return FALSE; - } - return TRUE; + return true; } -void wxFont::Unshare() +bool wxFont::Create(const wxString& fontname) { - if (!m_refData) - { - m_refData = new wxFontRefData(); - } - else + // VZ: does this really happen? + if ( fontname.empty() ) { - wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData); - UnRef(); - m_refData = ref; + *this = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT); + + return true; } + + m_refData = new wxFontRefData(fontname); + + return true; } wxFont::~wxFont() { - if (wxTheFontList) - wxTheFontList->DeleteObject( this ); } // ---------------------------------------------------------------------------- @@ -328,64 +343,72 @@ wxFont::~wxFont() int wxFont::GetPointSize() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), 0, wxT("invalid font") ); - return M_FONTDATA->m_pointSize; + return M_FONTDATA->m_nativeFontInfo.GetPointSize(); } wxString wxFont::GetFaceName() const { - wxCHECK_MSG( Ok(), wxT(""), wxT("invalid font") ); + wxCHECK_MSG( IsOk(), wxEmptyString, wxT("invalid font") ); - return M_FONTDATA->m_faceName; + return M_FONTDATA->m_nativeFontInfo.GetFaceName(); } -int wxFont::GetFamily() const +wxFontFamily wxFont::DoGetFamily() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid font") ); - - return M_FONTDATA->m_family; + return M_FONTDATA->m_nativeFontInfo.GetFamily(); } -int wxFont::GetStyle() const +wxFontStyle wxFont::GetStyle() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), wxFONTSTYLE_MAX, wxT("invalid font") ); - return M_FONTDATA->m_style; + return M_FONTDATA->m_nativeFontInfo.GetStyle(); } -int wxFont::GetWeight() const +wxFontWeight wxFont::GetWeight() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), wxFONTWEIGHT_MAX, wxT("invalid font") ); - return M_FONTDATA->m_weight; + return M_FONTDATA->m_nativeFontInfo.GetWeight(); } bool wxFont::GetUnderlined() const { - wxCHECK_MSG( Ok(), FALSE, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), false, wxT("invalid font") ); return M_FONTDATA->m_underlined; } +bool wxFont::GetStrikethrough() const +{ + wxCHECK_MSG( IsOk(), false, wxT("invalid font") ); + + return M_FONTDATA->m_strikethrough; +} wxFontEncoding wxFont::GetEncoding() const { - wxCHECK_MSG( Ok(), wxFONTENCODING_DEFAULT, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), wxFONTENCODING_SYSTEM, wxT("invalid font") ); - return M_FONTDATA->m_encoding; + return wxFONTENCODING_UTF8; + // Pango always uses UTF8... see also SetEncoding() } -wxNativeFontInfo *wxFont::GetNativeFontInfo() const +const wxNativeFontInfo *wxFont::GetNativeFontInfo() const { - wxCHECK_MSG( Ok(), (wxNativeFontInfo *)NULL, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), NULL, wxT("invalid font") ); - if(M_FONTDATA->m_nativeFontInfo.xFontName.IsEmpty()) - GetInternalFont(); - - return new wxNativeFontInfo(M_FONTDATA->m_nativeFontInfo); + return &(M_FONTDATA->m_nativeFontInfo); } +bool wxFont::IsFixedWidth() const +{ + wxCHECK_MSG( IsOk(), false, wxT("invalid font") ); + + return wxFontBase::IsFixedWidth(); +} // ---------------------------------------------------------------------------- // change font attributes @@ -393,136 +416,137 @@ wxNativeFontInfo *wxFont::GetNativeFontInfo() const void wxFont::SetPointSize(int pointSize) { - Unshare(); + AllocExclusive(); - M_FONTDATA->m_pointSize = pointSize; - M_FONTDATA->m_nativeFontInfo.xFontName.Clear(); // invalid now + M_FONTDATA->SetPointSize(pointSize); } -void wxFont::SetFamily(int family) +void wxFont::SetFamily(wxFontFamily family) { - Unshare(); + AllocExclusive(); - M_FONTDATA->m_family = family; - M_FONTDATA->m_nativeFontInfo.xFontName.Clear(); // invalid now + M_FONTDATA->SetFamily(family); } -void wxFont::SetStyle(int style) +void wxFont::SetStyle(wxFontStyle style) { - Unshare(); + AllocExclusive(); - M_FONTDATA->m_style = style; - M_FONTDATA->m_nativeFontInfo.xFontName.Clear(); // invalid now + M_FONTDATA->SetStyle(style); } -void wxFont::SetWeight(int weight) +void wxFont::SetWeight(wxFontWeight weight) { - Unshare(); + AllocExclusive(); - M_FONTDATA->m_weight = weight; - M_FONTDATA->m_nativeFontInfo.xFontName.Clear(); // invalid now + M_FONTDATA->SetWeight(weight); } -void wxFont::SetFaceName(const wxString& faceName) +bool wxFont::SetFaceName(const wxString& faceName) { - Unshare(); + AllocExclusive(); - M_FONTDATA->m_faceName = faceName; - M_FONTDATA->m_nativeFontInfo.xFontName.Clear(); // invalid now + return M_FONTDATA->SetFaceName(faceName) && + wxFontBase::SetFaceName(faceName); } void wxFont::SetUnderlined(bool underlined) { - Unshare(); + AllocExclusive(); - M_FONTDATA->m_underlined = underlined; + M_FONTDATA->SetUnderlined(underlined); } -void wxFont::SetEncoding(wxFontEncoding encoding) +void wxFont::SetStrikethrough(bool strikethrough) { - Unshare(); + AllocExclusive(); - M_FONTDATA->m_encoding = encoding; - M_FONTDATA->m_nativeFontInfo.xFontName.Clear(); // invalid now + M_FONTDATA->SetStrikethrough(strikethrough); } -void wxFont::SetNativeFontInfo(const wxNativeFontInfo& info) +void wxFont::SetEncoding(wxFontEncoding encoding) { - Unshare(); + AllocExclusive(); - M_FONTDATA->m_nativeFontInfo = info; + M_FONTDATA->SetEncoding(encoding); } -// ---------------------------------------------------------------------------- -// get internal representation of font -// ---------------------------------------------------------------------------- +void wxFont::DoSetNativeFontInfo( const wxNativeFontInfo& info ) +{ + AllocExclusive(); -static GdkFont *g_systemDefaultGuiFont = (GdkFont*) NULL; + M_FONTDATA->SetNativeFontInfo( info ); +} -GdkFont *GtkGetDefaultGuiFont() +wxGDIRefData* wxFont::CreateGDIRefData() const { - if (!g_systemDefaultGuiFont) - { - GtkWidget *widget = gtk_button_new(); - GtkStyle *def = gtk_rc_get_style( widget ); - if (def) - { - g_systemDefaultGuiFont = gdk_font_ref( def->font ); - } - else - { - def = gtk_widget_get_default_style(); - if (def) - g_systemDefaultGuiFont = gdk_font_ref( def->font ); - } - gtk_widget_destroy( widget ); - } - return g_systemDefaultGuiFont; + return new wxFontRefData; } -GdkFont *wxFont::GetInternalFont( float scale ) const +wxGDIRefData* wxFont::CloneGDIRefData(const wxGDIRefData* data) const { - if (!Ok()) - { - wxFAIL_MSG( wxT("invalid font") ); + return new wxFontRefData(*static_cast(data)); +} - return (GdkFont*) NULL; - } +bool wxFont::GTKSetPangoAttrs(PangoLayout* layout) const +{ + if (!IsOk() || !(GetUnderlined() || GetStrikethrough())) + return false; - long int_scale = long(scale * 100.0 + 0.5); /* key for fontlist */ - int point_scale = (int)((M_FONTDATA->m_pointSize * 10 * int_scale) / 100); - GdkFont *font = (GdkFont *) NULL; + PangoAttrList* attrs = pango_attr_list_new(); + PangoAttribute* a; - wxNode *node = M_FONTDATA->m_scaled_xfonts.Find(int_scale); - if (node) + if (wx_pango_version_check(1,16,0)) { - font = (GdkFont*)node->Data(); - } - else - { - if (*this == wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT)) + // a PangoLayout which has leading/trailing spaces with underlined font + // is not correctly drawn by this pango version: Pango won't underline the spaces. + // This can be a problem; e.g. wxHTML rendering of underlined text relies on + // this behaviour. To workaround this problem, we use a special hack here + // suggested by pango maintainer Behdad Esfahbod: we prepend and append two + // empty space characters and give them a dummy colour attribute. + // This will force Pango to underline the leading/trailing spaces, too. + + const char* text = pango_layout_get_text(layout); + const size_t n = strlen(text); + if ((n > 0 && text[0] == ' ') || (n > 1 && text[n - 1] == ' ')) { - font = GtkGetDefaultGuiFont(); + wxCharBuffer buf(n + 6); + // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format + memcpy(buf.data(), "\342\200\214", 3); + // copy the user string + memcpy(buf.data() + 3, text, n); + // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format + memcpy(buf.data() + 3 + n, "\342\200\214", 3); + + pango_layout_set_text(layout, buf, n + 6); + + // Add dummy attributes (use colour as it's invisible anyhow for 0 + // width spaces) to ensure that the spaces in the beginning/end of the + // string are underlined too. + a = pango_attr_foreground_new(0x0057, 0x52A9, 0xD614); + a->start_index = 0; + a->end_index = 3; + pango_attr_list_insert(attrs, a); + + a = pango_attr_foreground_new(0x0057, 0x52A9, 0xD614); + a->start_index = n + 3; + a->end_index = n + 6; + pango_attr_list_insert(attrs, a); } - if (!font) - { - font = wxLoadQueryNearestFont( point_scale, - M_FONTDATA->m_family, - M_FONTDATA->m_style, - M_FONTDATA->m_weight, - M_FONTDATA->m_underlined, - M_FONTDATA->m_faceName, - M_FONTDATA->m_encoding, - &M_FONTDATA->m_nativeFontInfo.xFontName ); - } - - M_FONTDATA->m_scaled_xfonts.Append( int_scale, (wxObject*)font ); + } + if (GetUnderlined()) + { + a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE); + pango_attr_list_insert(attrs, a); + } + if (GetStrikethrough()) + { + a = pango_attr_strikethrough_new(true); + pango_attr_list_insert(attrs, a); } - // it's quite useless to make it a wxCHECK because we're going to crash - // anyhow... - wxASSERT_MSG( font, wxT("could not load any font?") ); + pango_layout_set_attributes(layout, attrs); + pango_attr_list_unref(attrs); - return font; + return true; } -