X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ce5d92e15071d65b430f11efa548076beeb9673c..14722c43c30918cd8fbba956b50ac3426d2fe339:/src/gtk/font.cpp diff --git a/src/gtk/font.cpp b/src/gtk/font.cpp index 6c9e102f31..06260392d9 100644 --- a/src/gtk/font.cpp +++ b/src/gtk/font.cpp @@ -1,6 +1,6 @@ ///////////////////////////////////////////////////////////////////////////// // Name: src/gtk/font.cpp -// Purpose: +// Purpose: wxFont for wxGTK // Author: Robert Roebling // Id: $Id$ // Copyright: (c) 1998 Robert Roebling and Julian Smart @@ -24,17 +24,13 @@ #include "wx/log.h" #include "wx/utils.h" #include "wx/settings.h" - #include "wx/cmndata.h" + #include "wx/gdicmn.h" #endif #include "wx/fontutil.h" -#include "wx/gdicmn.h" #include "wx/tokenzr.h" -#include - #include "wx/gtk/private.h" -#include // ---------------------------------------------------------------------------- // constants @@ -43,67 +39,52 @@ // the default size (in points) for the fonts static const int wxDEFAULT_FONT_SIZE = 12; -// ---------------------------------------------------------------------------- -// wxScaledFontList: maps the font sizes to the GDK fonts for the given font -// ---------------------------------------------------------------------------- - -WX_DECLARE_HASH_MAP(int, GdkFont *, wxIntegerHash, wxIntegerEqual, - wxScaledFontList); - // ---------------------------------------------------------------------------- // wxFontRefData // ---------------------------------------------------------------------------- -class wxFontRefData : public wxObjectRefData +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 SetFaceName(const wxString& facename); + 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); @@ -111,146 +92,76 @@ 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. + bool m_strikethrough; + // The native font info: basically a PangoFontDescription wxNativeFontInfo m_nativeFontInfo; friend class wxFont; }; +#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)) { - 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; + if (family == wxFONTFAMILY_DEFAULT) + family = wxFONTFAMILY_SWISS; m_underlined = underlined; - m_encoding = encoding; - - m_noAA = false; + m_strikethrough = strikethrough; // 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 ); } void wxFontRefData::InitFromNative() { - m_noAA = false; - // Get native info PangoFontDescription *desc = m_nativeFontInfo.description; - // init fields - m_faceName = wxGTK_CONV_BACK( 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(); + m_nativeFontInfo.SetPointSize(wxDEFAULT_FONT_SIZE); - 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 (?) + // Pango description are never underlined m_underlined = false; - - // always with GTK+ 2 - m_encoding = wxFONTENCODING_UTF8; + m_strikethrough = false; } wxFontRefData::wxFontRefData( const wxFontRefData& data ) - : wxObjectRefData() + : 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; + 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 @@ -258,28 +169,23 @@ wxFontRefData::wxFontRefData( const wxFontRefData& data ) 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(); } // ---------------------------------------------------------------------------- @@ -288,56 +194,80 @@ 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; - // the XLFD doesn't have "underlined" field anyhow + // 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 } -void wxFontRefData::SetFaceName(const wxString& facename) +void wxFontRefData::SetStrikethrough(bool strikethrough) { - m_faceName = facename; + m_strikethrough = strikethrough; +} - m_nativeFontInfo.SetFaceName(facename); +bool wxFontRefData::SetFaceName(const wxString& 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 @@ -348,8 +278,6 @@ void wxFontRefData::SetNativeFontInfo(const wxNativeFontInfo& info) // wxFont creation // ---------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject) - wxFont::wxFont(const wxNativeFontInfo& info) { Create( info.GetPointSize(), @@ -361,18 +289,31 @@ wxFont::wxFont(const wxNativeFontInfo& info) info.GetEncoding() ); } +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); +} + 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; } @@ -392,20 +333,6 @@ bool wxFont::Create(const wxString& fontname) return true; } -void wxFont::Unshare() -{ - if (!m_refData) - { - m_refData = new wxFontRefData(); - } - else - { - wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData); - UnRef(); - m_refData = ref; - } -} - wxFont::~wxFont() { } @@ -416,102 +343,69 @@ wxFont::~wxFont() int wxFont::GetPointSize() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), 0, wxT("invalid font") ); -#if wxUSE_PANGO - return M_FONTDATA->HasNativeFont() ? M_FONTDATA->m_nativeFontInfo.GetPointSize() - : M_FONTDATA->m_pointSize; -#else - return M_FONTDATA->m_pointSize; -#endif + return M_FONTDATA->m_nativeFontInfo.GetPointSize(); } wxString wxFont::GetFaceName() const { - wxCHECK_MSG( Ok(), wxEmptyString, wxT("invalid font") ); + wxCHECK_MSG( IsOk(), wxEmptyString, wxT("invalid font") ); -#if wxUSE_PANGO - return M_FONTDATA->HasNativeFont() ? M_FONTDATA->m_nativeFontInfo.GetFaceName() - : M_FONTDATA->m_faceName; -#else - return M_FONTDATA->m_faceName; -#endif + return M_FONTDATA->m_nativeFontInfo.GetFaceName(); } -int wxFont::GetFamily() const +wxFontFamily wxFont::DoGetFamily() const { - wxCHECK_MSG( Ok(), 0, wxT("invalid font") ); - -#if wxUSE_PANGO - 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; -#else - return M_FONTDATA->m_family; -#endif + 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") ); -#if wxUSE_PANGO - return M_FONTDATA->HasNativeFont() ? M_FONTDATA->m_nativeFontInfo.GetStyle() - : M_FONTDATA->m_style; -#else - return M_FONTDATA->m_style; -#endif + 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") ); -#if wxUSE_PANGO - return M_FONTDATA->HasNativeFont() ? M_FONTDATA->m_nativeFontInfo.GetWeight() - : M_FONTDATA->m_weight; -#else - return M_FONTDATA->m_weight; -#endif + 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; } -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_strikethrough; } -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(); } @@ -522,63 +416,137 @@ bool wxFont::IsFixedWidth() const void wxFont::SetPointSize(int pointSize) { - Unshare(); + AllocExclusive(); M_FONTDATA->SetPointSize(pointSize); } -void wxFont::SetFamily(int family) +void wxFont::SetFamily(wxFontFamily family) { - Unshare(); + AllocExclusive(); M_FONTDATA->SetFamily(family); } -void wxFont::SetStyle(int style) +void wxFont::SetStyle(wxFontStyle style) { - Unshare(); + AllocExclusive(); M_FONTDATA->SetStyle(style); } -void wxFont::SetWeight(int weight) +void wxFont::SetWeight(wxFontWeight weight) { - Unshare(); + AllocExclusive(); M_FONTDATA->SetWeight(weight); } -void wxFont::SetFaceName(const wxString& faceName) +bool wxFont::SetFaceName(const wxString& faceName) { - Unshare(); + AllocExclusive(); - M_FONTDATA->SetFaceName(faceName); + return M_FONTDATA->SetFaceName(faceName) && + wxFontBase::SetFaceName(faceName); } void wxFont::SetUnderlined(bool underlined) { - Unshare(); + AllocExclusive(); M_FONTDATA->SetUnderlined(underlined); } +void wxFont::SetStrikethrough(bool strikethrough) +{ + AllocExclusive(); + + M_FONTDATA->SetStrikethrough(strikethrough); +} + void wxFont::SetEncoding(wxFontEncoding encoding) { - Unshare(); + AllocExclusive(); M_FONTDATA->SetEncoding(encoding); } void wxFont::DoSetNativeFontInfo( const wxNativeFontInfo& info ) { - Unshare(); + AllocExclusive(); M_FONTDATA->SetNativeFontInfo( info ); } -void wxFont::SetNoAntiAliasing( bool no ) +wxGDIRefData* wxFont::CreateGDIRefData() const +{ + return new wxFontRefData; +} + +wxGDIRefData* wxFont::CloneGDIRefData(const wxGDIRefData* data) const +{ + return new wxFontRefData(*static_cast(data)); +} + +bool wxFont::GTKSetPangoAttrs(PangoLayout* layout) const { - Unshare(); + if (!IsOk() || !(GetUnderlined() || GetStrikethrough())) + return false; - M_FONTDATA->SetNoAntiAliasing( no ); + 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; }