b960795ea8
This helper class allows to create wxFonts using shorter and more readable
code, e.g.
wxFont font(12, wxFONTFLAG_DEFAULT,
wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL, true,
"DejaVu Sans");
can now be written simply as
wxFont font(wxFontInfo(12).FaceName("DejaVu Sans").Underlined());
Remove the ctor from font flags added in r70445 as it's not needed any longer
now that we have this one and adding it resulted in compilation errors in the
existing code which compiled with 2.8 because of ambiguities between that ctor
and wxFont(int size, int family, int style, int weight. bool underlined, ...)
one, e.g.
wxFont(12, wxFONTFAMILY_SWISS, wxNORMAL, wxNORMAL)
didn't compile any more but it does compile again now.
See #9907.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73885 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
600 lines
21 KiB
C++
600 lines
21 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/font.h
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// Purpose: wxFontBase class: the interface of wxFont
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 20.09.99
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// RCS-ID: $Id$
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// Copyright: (c) wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_FONT_H_BASE_
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#define _WX_FONT_H_BASE_
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "wx/defs.h" // for wxDEFAULT &c
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#include "wx/fontenc.h" // the font encoding constants
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#include "wx/gdiobj.h" // the base class
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#include "wx/gdicmn.h" // for wxGDIObjListBase
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// ----------------------------------------------------------------------------
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// forward declarations
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_FWD_CORE wxFont;
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// ----------------------------------------------------------------------------
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// font constants
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// ----------------------------------------------------------------------------
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// standard font families: these may be used only for the font creation, it
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// doesn't make sense to query an existing font for its font family as,
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// especially if the font had been created from a native font description, it
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// may be unknown
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enum wxFontFamily
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{
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wxFONTFAMILY_DEFAULT = wxDEFAULT,
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wxFONTFAMILY_DECORATIVE = wxDECORATIVE,
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wxFONTFAMILY_ROMAN = wxROMAN,
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wxFONTFAMILY_SCRIPT = wxSCRIPT,
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wxFONTFAMILY_SWISS = wxSWISS,
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wxFONTFAMILY_MODERN = wxMODERN,
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wxFONTFAMILY_TELETYPE = wxTELETYPE,
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wxFONTFAMILY_MAX,
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wxFONTFAMILY_UNKNOWN = wxFONTFAMILY_MAX
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};
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// font styles
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enum wxFontStyle
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{
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wxFONTSTYLE_NORMAL = wxNORMAL,
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wxFONTSTYLE_ITALIC = wxITALIC,
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wxFONTSTYLE_SLANT = wxSLANT,
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wxFONTSTYLE_MAX
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};
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// font weights
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enum wxFontWeight
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{
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wxFONTWEIGHT_NORMAL = wxNORMAL,
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wxFONTWEIGHT_LIGHT = wxLIGHT,
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wxFONTWEIGHT_BOLD = wxBOLD,
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wxFONTWEIGHT_MAX
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};
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// Symbolic font sizes as defined in CSS specification.
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enum wxFontSymbolicSize
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{
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wxFONTSIZE_XX_SMALL = -3,
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wxFONTSIZE_X_SMALL,
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wxFONTSIZE_SMALL,
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wxFONTSIZE_MEDIUM,
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wxFONTSIZE_LARGE,
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wxFONTSIZE_X_LARGE,
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wxFONTSIZE_XX_LARGE
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};
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// the font flag bits for the new font ctor accepting one combined flags word
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enum wxFontFlag
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{
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// no special flags: font with default weight/slant/anti-aliasing
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wxFONTFLAG_DEFAULT = 0,
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// slant flags (default: no slant)
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wxFONTFLAG_ITALIC = 1 << 0,
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wxFONTFLAG_SLANT = 1 << 1,
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// weight flags (default: medium)
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wxFONTFLAG_LIGHT = 1 << 2,
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wxFONTFLAG_BOLD = 1 << 3,
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// anti-aliasing flag: force on or off (default: the current system default)
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wxFONTFLAG_ANTIALIASED = 1 << 4,
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wxFONTFLAG_NOT_ANTIALIASED = 1 << 5,
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// underlined/strikethrough flags (default: no lines)
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wxFONTFLAG_UNDERLINED = 1 << 6,
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wxFONTFLAG_STRIKETHROUGH = 1 << 7,
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// the mask of all currently used flags
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wxFONTFLAG_MASK = wxFONTFLAG_ITALIC |
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wxFONTFLAG_SLANT |
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wxFONTFLAG_LIGHT |
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wxFONTFLAG_BOLD |
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wxFONTFLAG_ANTIALIASED |
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wxFONTFLAG_NOT_ANTIALIASED |
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wxFONTFLAG_UNDERLINED |
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wxFONTFLAG_STRIKETHROUGH
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};
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// ----------------------------------------------------------------------------
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// wxFontInfo describes a wxFont
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// ----------------------------------------------------------------------------
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class wxFontInfo
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{
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public:
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// Default ctor uses the default font size appropriate for the current
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// platform.
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wxFontInfo()
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{ InitPointSize(-1); }
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// These ctors specify the font size, either in points or in pixels.
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wxEXPLICIT wxFontInfo(int pointSize)
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{ InitPointSize(pointSize); }
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wxEXPLICIT wxFontInfo(const wxSize& pixelSize) : m_pixelSize(pixelSize)
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{ Init(); }
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// Setters for the various attributes. All of them return the object itself
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// so that the calls to them could be chained.
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wxFontInfo& Family(wxFontFamily family)
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{ m_family = family; return *this; }
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wxFontInfo& FaceName(const wxString& faceName)
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{ m_faceName = faceName; return *this; }
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wxFontInfo& Bold(bool bold = true)
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{ SetFlag(wxFONTFLAG_BOLD, bold); return *this; }
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wxFontInfo& Light(bool light = true)
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{ SetFlag(wxFONTFLAG_LIGHT, light); return *this; }
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wxFontInfo& Italic(bool italic = true)
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{ SetFlag(wxFONTFLAG_ITALIC, italic); return *this; }
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wxFontInfo& Slant(bool slant = true)
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{ SetFlag(wxFONTFLAG_SLANT, slant); return *this; }
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wxFontInfo& AntiAliased(bool antiAliased = true)
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{ SetFlag(wxFONTFLAG_ANTIALIASED, antiAliased); return *this; }
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wxFontInfo& Underlined(bool underlined = true)
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{ SetFlag(wxFONTFLAG_UNDERLINED, underlined); return *this; }
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wxFontInfo& Strikethrough(bool strikethrough = true)
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{ SetFlag(wxFONTFLAG_STRIKETHROUGH, strikethrough); return *this; }
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wxFontInfo& Encoding(wxFontEncoding encoding)
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{ m_encoding = encoding; return *this; }
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// Set all flags at once.
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wxFontInfo& AllFlags(int flags)
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{ m_flags = flags; return *this; }
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// Accessors are mostly meant to be used by wxFont itself to extract the
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// various pieces of the font description.
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bool IsUsingSizeInPixels() const { return m_pixelSize != wxDefaultSize; }
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int GetPointSize() const { return m_pointSize; }
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wxSize GetPixelSize() const { return m_pixelSize; }
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wxFontFamily GetFamily() const { return m_family; }
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const wxString& GetFaceName() const { return m_faceName; }
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wxFontStyle GetStyle() const
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{
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return m_flags & wxFONTFLAG_ITALIC
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? wxFONTSTYLE_ITALIC
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: m_flags & wxFONTFLAG_SLANT
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? wxFONTSTYLE_SLANT
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: wxFONTSTYLE_NORMAL;
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}
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wxFontWeight GetWeight() const
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{
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return m_flags & wxFONTFLAG_LIGHT
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? wxFONTWEIGHT_LIGHT
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: m_flags & wxFONTFLAG_BOLD
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? wxFONTWEIGHT_BOLD
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: wxFONTWEIGHT_NORMAL;
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}
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bool IsAntiAliased() const
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{
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return (m_flags & wxFONTFLAG_ANTIALIASED) != 0;
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}
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bool IsUnderlined() const
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{
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return (m_flags & wxFONTFLAG_UNDERLINED) != 0;
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}
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bool IsStrikethrough() const
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{
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return (m_flags & wxFONTFLAG_STRIKETHROUGH) != 0;
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}
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wxFontEncoding GetEncoding() const { return m_encoding; }
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// Default copy ctor, assignment operator and dtor are OK.
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private:
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// Common part of all ctor, initializing everything except the size (which
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// is initialized by the ctors themselves).
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void Init()
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{
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m_family = wxFONTFAMILY_DEFAULT;
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m_flags = wxFONTFLAG_DEFAULT;
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m_encoding = wxFONTENCODING_DEFAULT;
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}
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void InitPointSize(int pointSize)
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{
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Init();
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m_pointSize = pointSize;
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m_pixelSize = wxDefaultSize;
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}
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// Turn on or off the given bit in m_flags depending on the value of the
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// boolean argument.
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void SetFlag(int flag, bool on)
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{
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if ( on )
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m_flags |= flag;
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else
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m_flags &= ~flag;
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}
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// The size information: if m_pixelSize is valid (!= wxDefaultSize), then
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// it is used. Otherwise m_pointSize is used, taking into account that if
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// it is == -1, it means that the platform dependent font size should be
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// used.
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int m_pointSize;
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wxSize m_pixelSize;
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wxFontFamily m_family;
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wxString m_faceName;
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int m_flags;
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wxFontEncoding m_encoding;
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};
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// ----------------------------------------------------------------------------
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// wxFontBase represents a font object
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_FWD_CORE wxNativeFontInfo;
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class WXDLLIMPEXP_CORE wxFontBase : public wxGDIObject
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{
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public:
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/*
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derived classes should provide the following ctors:
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wxFont();
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wxFont(const wxFontInfo& info);
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wxFont(const wxString& nativeFontInfoString);
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wxFont(const wxNativeFontInfo& info);
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wxFont(int size,
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wxFontFamily family,
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wxFontStyle style,
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wxFontWeight weight,
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bool underlined = false,
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const wxString& face = wxEmptyString,
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wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
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wxFont(const wxSize& pixelSize,
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wxFontFamily family,
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wxFontStyle style,
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wxFontWeight weight,
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bool underlined = false,
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const wxString& face = wxEmptyString,
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wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
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*/
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// creator function
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virtual ~wxFontBase();
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#if FUTURE_WXWIN_COMPATIBILITY_3_0
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// from the font components
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static wxFont *New(
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int pointSize, // size of the font in points
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int family, // see wxFontFamily enum
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int style, // see wxFontStyle enum
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int weight, // see wxFontWeight enum
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bool underlined = false, // not underlined by default
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const wxString& face = wxEmptyString, // facename
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wxFontEncoding encoding = wxFONTENCODING_DEFAULT) // ISO8859-X, ...
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{ return New(pointSize, (wxFontFamily)family, (wxFontStyle)style,
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(wxFontWeight)weight, underlined, face, encoding); }
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// from the font components
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static wxFont *New(
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const wxSize& pixelSize, // size of the font in pixels
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int family, // see wxFontFamily enum
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int style, // see wxFontStyle enum
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int weight, // see wxFontWeight enum
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bool underlined = false, // not underlined by default
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const wxString& face = wxEmptyString, // facename
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wxFontEncoding encoding = wxFONTENCODING_DEFAULT) // ISO8859-X, ...
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{ return New(pixelSize, (wxFontFamily)family, (wxFontStyle)style,
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(wxFontWeight)weight, underlined, face, encoding); }
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#endif
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// from the font components
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static wxFont *New(
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int pointSize, // size of the font in points
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wxFontFamily family, // see wxFontFamily enum
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wxFontStyle style, // see wxFontStyle enum
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wxFontWeight weight, // see wxFontWeight enum
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bool underlined = false, // not underlined by default
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const wxString& face = wxEmptyString, // facename
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wxFontEncoding encoding = wxFONTENCODING_DEFAULT); // ISO8859-X, ...
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// from the font components
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static wxFont *New(
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const wxSize& pixelSize, // size of the font in pixels
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wxFontFamily family, // see wxFontFamily enum
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wxFontStyle style, // see wxFontStyle enum
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wxFontWeight weight, // see wxFontWeight enum
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bool underlined = false, // not underlined by default
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const wxString& face = wxEmptyString, // facename
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wxFontEncoding encoding = wxFONTENCODING_DEFAULT); // ISO8859-X, ...
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// from the font components but using the font flags instead of separate
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// parameters for each flag
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static wxFont *New(int pointSize,
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wxFontFamily family,
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int flags = wxFONTFLAG_DEFAULT,
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const wxString& face = wxEmptyString,
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wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
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// from the font components but using the font flags instead of separate
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// parameters for each flag
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static wxFont *New(const wxSize& pixelSize,
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wxFontFamily family,
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int flags = wxFONTFLAG_DEFAULT,
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const wxString& face = wxEmptyString,
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wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
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// from the (opaque) native font description object
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static wxFont *New(const wxNativeFontInfo& nativeFontDesc);
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// from the string representation of wxNativeFontInfo
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static wxFont *New(const wxString& strNativeFontDesc);
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// comparison
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bool operator==(const wxFont& font) const;
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bool operator!=(const wxFont& font) const { return !(*this == font); }
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// accessors: get the font characteristics
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virtual int GetPointSize() const = 0;
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virtual wxSize GetPixelSize() const;
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virtual bool IsUsingSizeInPixels() const;
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wxFontFamily GetFamily() const;
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virtual wxFontStyle GetStyle() const = 0;
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virtual wxFontWeight GetWeight() const = 0;
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virtual bool GetUnderlined() const = 0;
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virtual bool GetStrikethrough() const { return false; }
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virtual wxString GetFaceName() const = 0;
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virtual wxFontEncoding GetEncoding() const = 0;
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virtual const wxNativeFontInfo *GetNativeFontInfo() const = 0;
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virtual bool IsFixedWidth() const;
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wxString GetNativeFontInfoDesc() const;
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wxString GetNativeFontInfoUserDesc() const;
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// change the font characteristics
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virtual void SetPointSize( int pointSize ) = 0;
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virtual void SetPixelSize( const wxSize& pixelSize );
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virtual void SetFamily( wxFontFamily family ) = 0;
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virtual void SetStyle( wxFontStyle style ) = 0;
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virtual void SetWeight( wxFontWeight weight ) = 0;
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virtual void SetUnderlined( bool underlined ) = 0;
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virtual void SetStrikethrough( bool WXUNUSED(strikethrough) ) {}
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virtual void SetEncoding(wxFontEncoding encoding) = 0;
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virtual bool SetFaceName( const wxString& faceName );
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void SetNativeFontInfo(const wxNativeFontInfo& info)
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{ DoSetNativeFontInfo(info); }
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bool SetNativeFontInfo(const wxString& info);
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bool SetNativeFontInfoUserDesc(const wxString& info);
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// Symbolic font sizes support: set the font size to "large" or "very
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// small" either absolutely (i.e. compared to the default font size) or
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// relatively to the given font size.
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void SetSymbolicSize(wxFontSymbolicSize size);
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void SetSymbolicSizeRelativeTo(wxFontSymbolicSize size, int base)
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{
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SetPointSize(AdjustToSymbolicSize(size, base));
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}
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// Adjust the base size in points according to symbolic size.
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static int AdjustToSymbolicSize(wxFontSymbolicSize size, int base);
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// translate the fonts into human-readable string (i.e. GetStyleString()
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// will return "wxITALIC" for an italic font, ...)
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wxString GetFamilyString() const;
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wxString GetStyleString() const;
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wxString GetWeightString() const;
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// the default encoding is used for creating all fonts with default
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// encoding parameter
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static wxFontEncoding GetDefaultEncoding() { return ms_encodingDefault; }
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static void SetDefaultEncoding(wxFontEncoding encoding);
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// this doesn't do anything and is kept for compatibility only
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#if WXWIN_COMPATIBILITY_2_8
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wxDEPRECATED_INLINE(void SetNoAntiAliasing(bool no = true), wxUnusedVar(no););
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wxDEPRECATED_INLINE(bool GetNoAntiAliasing() const, return false;)
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#endif // WXWIN_COMPATIBILITY_2_8
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protected:
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// the function called by both overloads of SetNativeFontInfo()
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virtual void DoSetNativeFontInfo(const wxNativeFontInfo& info);
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// The function called by public GetFamily(): it can return
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// wxFONTFAMILY_UNKNOWN unlike the public method (see comment there).
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virtual wxFontFamily DoGetFamily() const = 0;
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// Helper functions to recover wxFONTSTYLE/wxFONTWEIGHT and underlined flag
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// values from flags containing a combination of wxFONTFLAG_XXX.
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static wxFontStyle GetStyleFromFlags(int flags)
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{
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return flags & wxFONTFLAG_ITALIC
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? wxFONTSTYLE_ITALIC
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: flags & wxFONTFLAG_SLANT
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? wxFONTSTYLE_SLANT
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: wxFONTSTYLE_NORMAL;
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}
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static wxFontWeight GetWeightFromFlags(int flags)
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{
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return flags & wxFONTFLAG_LIGHT
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? wxFONTWEIGHT_LIGHT
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: flags & wxFONTFLAG_BOLD
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? wxFONTWEIGHT_BOLD
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: wxFONTWEIGHT_NORMAL;
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}
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static bool GetUnderlinedFromFlags(int flags)
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{
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return (flags & wxFONTFLAG_UNDERLINED) != 0;
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}
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static bool GetStrikethroughFromFlags(int flags)
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{
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return (flags & wxFONTFLAG_STRIKETHROUGH) != 0;
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}
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private:
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// the currently default encoding: by default, it's the default system
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// encoding, but may be changed by the application using
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// SetDefaultEncoding() to make all subsequent fonts created without
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// specifying encoding parameter using this encoding
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static wxFontEncoding ms_encodingDefault;
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};
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// wxFontBase <-> wxString utilities, used by wxConfig
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WXDLLIMPEXP_CORE wxString wxToString(const wxFontBase& font);
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WXDLLIMPEXP_CORE bool wxFromString(const wxString& str, wxFontBase* font);
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#if FUTURE_WXWIN_COMPATIBILITY_3_0
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#define wxDECLARE_FONT_COMPAT_SETTER \
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wxDEPRECATED_FUTURE( void SetFamily(int family) ) \
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{ SetFamily((wxFontFamily)family); } \
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wxDEPRECATED_FUTURE( void SetStyle(int style) ) \
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{ SetStyle((wxFontStyle)style); } \
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wxDEPRECATED_FUTURE( void SetWeight(int weight) ) \
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{ SetWeight((wxFontWeight)weight); } \
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wxDEPRECATED_FUTURE( void SetFamily(wxDeprecatedGUIConstants family) ) \
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{ SetFamily((wxFontFamily)family); } \
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wxDEPRECATED_FUTURE( void SetStyle(wxDeprecatedGUIConstants style) ) \
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{ SetStyle((wxFontStyle)style); } \
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wxDEPRECATED_FUTURE( void SetWeight(wxDeprecatedGUIConstants weight) ) \
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{ SetWeight((wxFontWeight)weight); }
|
|
#else
|
|
#define wxDECLARE_FONT_COMPAT_SETTER /*empty*/
|
|
#endif
|
|
|
|
// this macro must be used in all derived wxFont classes declarations
|
|
#define wxDECLARE_COMMON_FONT_METHODS() \
|
|
wxDECLARE_FONT_COMPAT_SETTER \
|
|
\
|
|
/* functions for modifying font in place */ \
|
|
wxFont& MakeBold(); \
|
|
wxFont& MakeItalic(); \
|
|
wxFont& MakeUnderlined(); \
|
|
wxFont& MakeStrikethrough(); \
|
|
wxFont& MakeLarger() { return Scale(1.2f); } \
|
|
wxFont& MakeSmaller() { return Scale(1/1.2f); } \
|
|
wxFont& Scale(float x); \
|
|
/* functions for creating fonts based on this one */ \
|
|
wxFont Bold() const; \
|
|
wxFont Italic() const; \
|
|
wxFont Underlined() const; \
|
|
wxFont Strikethrough() const; \
|
|
wxFont Larger() const { return Scaled(1.2f); } \
|
|
wxFont Smaller() const { return Scaled(1/1.2f); } \
|
|
wxFont Scaled(float x) const
|
|
|
|
// include the real class declaration
|
|
#if defined(__WXMSW__)
|
|
#include "wx/msw/font.h"
|
|
#elif defined(__WXMOTIF__)
|
|
#include "wx/motif/font.h"
|
|
#elif defined(__WXGTK20__)
|
|
#include "wx/gtk/font.h"
|
|
#elif defined(__WXGTK__)
|
|
#include "wx/gtk1/font.h"
|
|
#elif defined(__WXX11__)
|
|
#include "wx/x11/font.h"
|
|
#elif defined(__WXDFB__)
|
|
#include "wx/dfb/font.h"
|
|
#elif defined(__WXMAC__)
|
|
#include "wx/osx/font.h"
|
|
#elif defined(__WXCOCOA__)
|
|
#include "wx/cocoa/font.h"
|
|
#elif defined(__WXPM__)
|
|
#include "wx/os2/font.h"
|
|
#endif
|
|
|
|
class WXDLLIMPEXP_CORE wxFontList: public wxGDIObjListBase
|
|
{
|
|
public:
|
|
wxFont *FindOrCreateFont(int pointSize,
|
|
wxFontFamily family,
|
|
wxFontStyle style,
|
|
wxFontWeight weight,
|
|
bool underline = false,
|
|
const wxString& face = wxEmptyString,
|
|
wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
|
|
|
|
#if FUTURE_WXWIN_COMPATIBILITY_3_0
|
|
wxFont *FindOrCreateFont(int pointSize, int family, int style, int weight,
|
|
bool underline = false,
|
|
const wxString& face = wxEmptyString,
|
|
wxFontEncoding encoding = wxFONTENCODING_DEFAULT)
|
|
{ return FindOrCreateFont(pointSize, (wxFontFamily)family, (wxFontStyle)style,
|
|
(wxFontWeight)weight, underline, face, encoding); }
|
|
#endif
|
|
|
|
#if WXWIN_COMPATIBILITY_2_6
|
|
wxDEPRECATED( void AddFont(wxFont*) );
|
|
wxDEPRECATED( void RemoveFont(wxFont*) );
|
|
#endif
|
|
};
|
|
|
|
extern WXDLLIMPEXP_DATA_CORE(wxFontList*) wxTheFontList;
|
|
|
|
|
|
// provide comparison operators to allow code such as
|
|
//
|
|
// if ( font.GetStyle() == wxFONTSTYLE_SLANT )
|
|
//
|
|
// to compile without warnings which it would otherwise provoke from some
|
|
// compilers as it compares elements of different enums
|
|
#if FUTURE_WXWIN_COMPATIBILITY_3_0
|
|
|
|
// Unfortunately some compilers have ambiguity issues when enum comparisons are
|
|
// overloaded so we have to disable the overloads in this case, see
|
|
// wxCOMPILER_NO_OVERLOAD_ON_ENUM definition in wx/platform.h for more details.
|
|
#ifndef wxCOMPILER_NO_OVERLOAD_ON_ENUM
|
|
|
|
inline bool operator==(wxFontFamily s, wxDeprecatedGUIConstants t)
|
|
{ return static_cast<int>(s) == static_cast<int>(t); }
|
|
inline bool operator!=(wxFontFamily s, wxDeprecatedGUIConstants t)
|
|
{ return !(s == t); }
|
|
inline bool operator==(wxFontStyle s, wxDeprecatedGUIConstants t)
|
|
{ return static_cast<int>(s) == static_cast<int>(t); }
|
|
inline bool operator!=(wxFontStyle s, wxDeprecatedGUIConstants t)
|
|
{ return !(s == t); }
|
|
inline bool operator==(wxFontWeight s, wxDeprecatedGUIConstants t)
|
|
{ return static_cast<int>(s) == static_cast<int>(t); }
|
|
inline bool operator!=(wxFontWeight s, wxDeprecatedGUIConstants t)
|
|
{ return !(s == t); }
|
|
|
|
#endif // // wxCOMPILER_NO_OVERLOAD_ON_ENUM
|
|
|
|
#endif // FUTURE_WXWIN_COMPATIBILITY_3_0
|
|
|
|
#endif
|
|
// _WX_FONT_H_BASE_
|