X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5c33522fca7cddc441a316f5b9fb50d7685435ba..0d53638f7147c18153f63fdfc096b17be6e22a27:/src/gtk/font.cpp?ds=inline diff --git a/src/gtk/font.cpp b/src/gtk/font.cpp index c1a2bda2df..734b7221c0 100644 --- a/src/gtk/font.cpp +++ b/src/gtk/font.cpp @@ -1,8 +1,7 @@ ///////////////////////////////////////////////////////////////////////////// // Name: src/gtk/font.cpp -// Purpose: +// Purpose: wxFont for wxGTK // Author: Robert Roebling -// Id: $Id$ // Copyright: (c) 1998 Robert Roebling and Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -24,7 +23,6 @@ #include "wx/log.h" #include "wx/utils.h" #include "wx/settings.h" - #include "wx/cmndata.h" #include "wx/gdicmn.h" #endif @@ -49,51 +47,43 @@ class wxFontRefData : public wxGDIRefData public: // from broken down font parameters, also default ctor wxFontRefData(int size = -1, - int family = wxFONTFAMILY_DEFAULT, - int style = wxFONTSTYLE_NORMAL, - int weight = wxFONTWEIGHT_NORMAL, + 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); - // from XFLD - wxFontRefData(const wxString& fontname); + wxFontRefData(const wxString& nativeFontInfoString); // copy ctor wxFontRefData( const wxFontRefData& data ); virtual ~wxFontRefData(); - // do we have the native font info? - bool HasNativeFont() const - { - // we always have a Pango font description - return true; - } - // 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(int family); - void SetStyle(int style); - void SetWeight(int weight); + 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); - void SetNoAntiAliasing( bool no = true ) { m_noAA = no; } - bool GetNoAntiAliasing() const { return m_noAA; } - // 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); @@ -101,20 +91,8 @@ protected: void InitFromNative(); private: - // clear m_scaled_xfonts if any - void ClearGdkFonts(); - - int m_pointSize; - int m_family, - m_style, - m_weight; - bool m_underlined; - wxString m_faceName; - wxFontEncoding m_encoding; - bool m_noAA; // No anti-aliasing - - // The native font info, basicly an XFLD under GTK 1.2 and - // the pango font description under GTK 2.0. + // The native font info: basically a PangoFontDescription, plus + // 'underlined' and 'strikethrough' attributes not supported by Pango. wxNativeFontInfo m_nativeFontInfo; friend class wxFont; @@ -127,153 +105,77 @@ private: // ---------------------------------------------------------------------------- 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)) { - m_family = family == wxFONTFAMILY_DEFAULT ? wxFONTFAMILY_SWISS : family; - - m_faceName = faceName; - - // we accept both wxDEFAULT and wxNORMAL here - should we? - m_style = style == wxDEFAULT ? wxFONTSTYLE_NORMAL : style; - m_weight = weight == wxDEFAULT ? wxFONTWEIGHT_NORMAL : weight; - - // and here, do we really want to forbid creation of the font of the size - // 90 (the value of wxDEFAULT)?? - m_pointSize = pointSize == wxDEFAULT || pointSize == -1 - ? wxDEFAULT_FONT_SIZE - : pointSize; - - m_underlined = underlined; - m_encoding = encoding; - if ( m_encoding == wxFONTENCODING_DEFAULT ) - m_encoding = wxFont::GetDefaultEncoding(); - - m_noAA = false; + if (family == wxFONTFAMILY_DEFAULT) + family = wxFONTFAMILY_SWISS; // Create native font info m_nativeFontInfo.description = pango_font_description_new(); // And set its values - if (!m_faceName.empty()) + if (!faceName.empty()) { - pango_font_description_set_family( m_nativeFontInfo.description, - wxGTK_CONV_SYS(m_faceName) ); + pango_font_description_set_family( m_nativeFontInfo.description, + wxGTK_CONV_SYS(faceName) ); } else { - switch (m_family) - { - case wxFONTFAMILY_MODERN: - case wxFONTFAMILY_TELETYPE: - pango_font_description_set_family( m_nativeFontInfo.description, "monospace" ); - break; - case wxFONTFAMILY_ROMAN: - pango_font_description_set_family( m_nativeFontInfo.description, "serif" ); - break; - case wxFONTFAMILY_SWISS: - // SWISS = sans serif - default: - pango_font_description_set_family( m_nativeFontInfo.description, "sans" ); - break; - } + SetFamily(family); } - SetStyle( m_style ); - SetPointSize( m_pointSize ); - SetWeight( m_weight ); + SetStyle( style == wxDEFAULT ? wxFONTSTYLE_NORMAL : style ); + SetPointSize( (pointSize == wxDEFAULT || pointSize == -1) + ? wxDEFAULT_FONT_SIZE + : pointSize ); + SetWeight( weight == wxDEFAULT ? wxFONTWEIGHT_NORMAL : weight ); + SetUnderlined( underlined ); + SetStrikethrough( strikethrough ); } void wxFontRefData::InitFromNative() { - m_noAA = false; - // Get native info PangoFontDescription *desc = m_nativeFontInfo.description; - // init fields - m_faceName = wxGTK_CONV_BACK_SYS(pango_font_description_get_family(desc)); - // Pango sometimes needs to have a size int pango_size = pango_font_description_get_size( desc ); if (pango_size == 0) - m_nativeFontInfo.SetPointSize(12); - - m_pointSize = m_nativeFontInfo.GetPointSize(); - m_style = m_nativeFontInfo.GetStyle(); - m_weight = m_nativeFontInfo.GetWeight(); - - if (m_faceName == wxT("monospace")) - { - m_family = wxFONTFAMILY_TELETYPE; - } - else if (m_faceName == wxT("sans")) - { - m_family = wxFONTFAMILY_SWISS; - } - else if (m_faceName == wxT("serif")) - { - m_family = wxFONTFAMILY_ROMAN; - } - else - { - m_family = wxFONTFAMILY_UNKNOWN; - } - - // Pango description are never underlined (?) - m_underlined = false; - - // always with GTK+ 2 - m_encoding = wxFONTENCODING_UTF8; + m_nativeFontInfo.SetPointSize(wxDEFAULT_FONT_SIZE); } wxFontRefData::wxFontRefData( const wxFontRefData& data ) : wxGDIRefData() { - m_pointSize = data.m_pointSize; - m_family = data.m_family; - m_style = data.m_style; - m_weight = data.m_weight; - - m_underlined = data.m_underlined; - - m_faceName = data.m_faceName; - m_encoding = data.m_encoding; - - m_noAA = data.m_noAA; - // 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) { - Init(size, family, style, weight, underlined, faceName, encoding); + Init(size, family, style, weight, underlined, strikethrough, faceName, encoding); } -wxFontRefData::wxFontRefData(const wxString& fontname) +wxFontRefData::wxFontRefData(const wxString& nativeFontInfoString) { - m_nativeFontInfo.FromString( fontname ); + m_nativeFontInfo.FromString( nativeFontInfoString ); InitFromNative(); } -void wxFontRefData::ClearGdkFonts() -{ -} - wxFontRefData::~wxFontRefData() { - ClearGdkFonts(); } // ---------------------------------------------------------------------------- @@ -282,56 +184,75 @@ wxFontRefData::~wxFontRefData() void wxFontRefData::SetPointSize(int pointSize) { - m_pointSize = pointSize; - m_nativeFontInfo.SetPointSize(pointSize); } -void wxFontRefData::SetFamily(int family) +/* + 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) { - m_family = family; + wxCHECK_MSG( pixelSize.GetWidth() >= 0 && pixelSize.GetHeight() > 0, false, + "Negative values for the pixel size or zero pixel height are not allowed" ); - // TODO: what are we supposed to do with m_nativeFontInfo here? + 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; + } + + pango_font_description_set_absolute_size( m_nativeFontInfo.description, + pixelSize.GetHeight() * PANGO_SCALE ); + + return true; } +*/ -void wxFontRefData::SetStyle(int style) +void wxFontRefData::SetFamily(wxFontFamily family) { - m_style = style; - - m_nativeFontInfo.SetStyle((wxFontStyle)style); + m_nativeFontInfo.SetFamily(family); } -void wxFontRefData::SetWeight(int weight) +void wxFontRefData::SetStyle(wxFontStyle style) { - m_weight = weight; + m_nativeFontInfo.SetStyle(style); +} - m_nativeFontInfo.SetWeight((wxFontWeight)weight); +void wxFontRefData::SetWeight(wxFontWeight weight) +{ + m_nativeFontInfo.SetWeight(weight); } void wxFontRefData::SetUnderlined(bool underlined) { - m_underlined = underlined; + m_nativeFontInfo.SetUnderlined(underlined); +} - // the XLFD doesn't have "underlined" field anyhow +void wxFontRefData::SetStrikethrough(bool strikethrough) +{ + m_nativeFontInfo.SetStrikethrough(strikethrough); } bool wxFontRefData::SetFaceName(const wxString& facename) { - m_faceName = facename; - return m_nativeFontInfo.SetFaceName(facename); } -void wxFontRefData::SetEncoding(wxFontEncoding encoding) +void wxFontRefData::SetEncoding(wxFontEncoding WXUNUSED(encoding)) { - m_encoding = encoding; + // with GTK+ 2 Pango always uses UTF8 internally, we cannot change it } void wxFontRefData::SetNativeFontInfo(const wxNativeFontInfo& info) { - // previously cached fonts shouldn't be used - ClearGdkFonts(); - m_nativeFontInfo = info; // set all the other font parameters from the native font info @@ -342,8 +263,6 @@ void wxFontRefData::SetNativeFontInfo(const wxNativeFontInfo& info) // wxFont creation // ---------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject) - wxFont::wxFont(const wxNativeFontInfo& info) { Create( info.GetPointSize(), @@ -353,20 +272,39 @@ wxFont::wxFont(const wxNativeFontInfo& info) info.GetUnderlined(), info.GetFaceName(), info.GetEncoding() ); + + if ( info.GetStrikethrough() ) + SetStrikethrough(true); +} + +wxFont::wxFont(const wxFontInfo& info) +{ + m_refData = new wxFontRefData(info.GetPointSize(), + info.GetFamily(), + info.GetStyle(), + info.GetWeight(), + info.IsUnderlined(), + info.IsStrikethrough(), + info.GetFaceName(), + info.GetEncoding()); + + wxSize pixelSize = info.GetPixelSize(); + if ( pixelSize != wxDefaultSize ) + SetPixelSize(pixelSize); } bool wxFont::Create( int pointSize, - int family, - int style, - int weight, + wxFontFamily family, + wxFontStyle style, + wxFontWeight weight, bool underlined, const wxString& face, - wxFontEncoding encoding) + wxFontEncoding encoding ) { UnRef(); m_refData = new wxFontRefData(pointSize, family, style, weight, - underlined, face, encoding); + underlined, false, face, encoding); return true; } @@ -396,82 +334,69 @@ wxFont::~wxFont() int wxFont::GetPointSize() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), 0, wxT("invalid font") ); - return M_FONTDATA->HasNativeFont() ? M_FONTDATA->m_nativeFontInfo.GetPointSize() - : M_FONTDATA->m_pointSize; + return M_FONTDATA->m_nativeFontInfo.GetPointSize(); } wxString wxFont::GetFaceName() const { - wxCHECK_MSG( Ok(), wxEmptyString, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), wxEmptyString, wxT("invalid font") ); - return M_FONTDATA->HasNativeFont() ? M_FONTDATA->m_nativeFontInfo.GetFaceName() - : 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") ); - - int ret = M_FONTDATA->m_family; - if (M_FONTDATA->HasNativeFont()) - // wxNativeFontInfo::GetFamily is expensive, must not call more than once - ret = M_FONTDATA->m_nativeFontInfo.GetFamily(); - - if (ret == wxFONTFAMILY_DEFAULT) - ret = M_FONTDATA->m_family; - - return ret; + 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->HasNativeFont() ? M_FONTDATA->m_nativeFontInfo.GetStyle() - : 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->HasNativeFont() ? M_FONTDATA->m_nativeFontInfo.GetWeight() - : 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; + return M_FONTDATA->m_nativeFontInfo.GetUnderlined(); } -wxFontEncoding wxFont::GetEncoding() const +bool wxFont::GetStrikethrough() const { - wxCHECK_MSG( Ok(), wxFONTENCODING_SYSTEM, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), false, wxT("invalid font") ); - return M_FONTDATA->m_encoding; + return M_FONTDATA->m_nativeFontInfo.GetStrikethrough(); } -bool wxFont::GetNoAntiAliasing() const +wxFontEncoding wxFont::GetEncoding() const { - wxCHECK_MSG( Ok(), false, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), wxFONTENCODING_SYSTEM, wxT("invalid font") ); - return M_FONTDATA->m_noAA; + return wxFONTENCODING_UTF8; + // Pango always uses UTF8... see also SetEncoding() } const wxNativeFontInfo *wxFont::GetNativeFontInfo() const { - wxCHECK_MSG( Ok(), (wxNativeFontInfo *)NULL, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), NULL, wxT("invalid font") ); return &(M_FONTDATA->m_nativeFontInfo); } bool wxFont::IsFixedWidth() const { - wxCHECK_MSG( Ok(), false, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), false, wxT("invalid font") ); return wxFontBase::IsFixedWidth(); } @@ -487,21 +412,21 @@ void wxFont::SetPointSize(int pointSize) M_FONTDATA->SetPointSize(pointSize); } -void wxFont::SetFamily(int family) +void wxFont::SetFamily(wxFontFamily family) { AllocExclusive(); M_FONTDATA->SetFamily(family); } -void wxFont::SetStyle(int style) +void wxFont::SetStyle(wxFontStyle style) { AllocExclusive(); M_FONTDATA->SetStyle(style); } -void wxFont::SetWeight(int weight) +void wxFont::SetWeight(wxFontWeight weight) { AllocExclusive(); @@ -523,25 +448,25 @@ void wxFont::SetUnderlined(bool underlined) M_FONTDATA->SetUnderlined(underlined); } -void wxFont::SetEncoding(wxFontEncoding encoding) +void wxFont::SetStrikethrough(bool strikethrough) { AllocExclusive(); - M_FONTDATA->SetEncoding(encoding); + M_FONTDATA->SetStrikethrough(strikethrough); } -void wxFont::DoSetNativeFontInfo( const wxNativeFontInfo& info ) +void wxFont::SetEncoding(wxFontEncoding encoding) { AllocExclusive(); - M_FONTDATA->SetNativeFontInfo( info ); + M_FONTDATA->SetEncoding(encoding); } -void wxFont::SetNoAntiAliasing( bool no ) +void wxFont::DoSetNativeFontInfo( const wxNativeFontInfo& info ) { AllocExclusive(); - M_FONTDATA->SetNoAntiAliasing( no ); + M_FONTDATA->SetNativeFontInfo( info ); } wxGDIRefData* wxFont::CreateGDIRefData() const @@ -553,3 +478,66 @@ wxGDIRefData* wxFont::CloneGDIRefData(const wxGDIRefData* data) const { return new wxFontRefData(*static_cast(data)); } + +bool wxFont::GTKSetPangoAttrs(PangoLayout* layout) const +{ + if (!IsOk() || !(GetUnderlined() || GetStrikethrough())) + return false; + + PangoAttrList* attrs = pango_attr_list_new(); + PangoAttribute* a; + + if (wx_pango_version_check(1,16,0)) + { + // 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] == ' ')) + { + 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 (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); + } + + pango_layout_set_attributes(layout, attrs); + pango_attr_list_unref(attrs); + + return true; +}