/////////////////////////////////////////////////////////////////////////////
// Name: src/gtk/font.cpp
-// Purpose:
+// Purpose: wxFont for wxGTK
// Author: Robert Roebling
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling and Julian Smart
#include "wx/log.h"
#include "wx/utils.h"
#include "wx/settings.h"
- #include "wx/cmndata.h"
#include "wx/gdicmn.h"
#endif
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 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);
wxFontStyle style,
wxFontWeight weight,
bool underlined,
+ bool strikethrough,
const wxString& faceName,
wxFontEncoding encoding);
void InitFromNative();
private:
- // clear m_scaled_xfonts if any
- void ClearGdkFonts();
-
- int m_pointSize;
- wxFontFamily m_family;
- wxFontStyle m_style;
- wxFontWeight 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;
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...
}
wxFontRefData::wxFontRefData(int size, wxFontFamily family, wxFontStyle style,
- wxFontWeight weight, bool underlined,
+ 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();
}
// ----------------------------------------------------------------------------
void wxFontRefData::SetPointSize(int pointSize)
{
- m_pointSize = pointSize;
-
m_nativeFontInfo.SetPointSize(pointSize);
}
-void wxFontRefData::SetFamily(wxFontFamily 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(wxFontStyle style)
+void wxFontRefData::SetFamily(wxFontFamily family)
{
- m_style = style;
+ m_nativeFontInfo.SetFamily(family);
+}
- m_nativeFontInfo.SetStyle((wxFontStyle)style);
+void wxFontRefData::SetStyle(wxFontStyle style)
+{
+ m_nativeFontInfo.SetStyle(style);
}
void wxFontRefData::SetWeight(wxFontWeight weight)
{
- m_weight = weight;
-
- m_nativeFontInfo.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
// wxFont creation
// ----------------------------------------------------------------------------
-IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
-
wxFont::wxFont(const wxNativeFontInfo& info)
{
Create( info.GetPointSize(),
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,
- wxFontFamily family,
- wxFontStyle style,
- wxFontWeight 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;
}
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();
}
-wxFontFamily wxFont::GetFamily() const
+wxFontFamily wxFont::DoGetFamily() const
{
- wxCHECK_MSG( Ok(), wxFONTFAMILY_MAX, wxT("invalid font") );
-
- wxFontFamily 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();
}
wxFontStyle wxFont::GetStyle() const
{
- wxCHECK_MSG( Ok(), wxFONTSTYLE_MAX, 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();
}
wxFontWeight wxFont::GetWeight() const
{
- wxCHECK_MSG( Ok(), wxFONTWEIGHT_MAX, 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(), 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();
}
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
{
return new wxFontRefData(*static_cast<const wxFontRefData*>(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;
+}
projects / wxWidgets.git / blobdiff