cba4e486a4
Honour wxFONTFLAG_STRIKETHROUGH in wxFont ctor taking flags as this is the only way to create a strike-through font currently. See #14559. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72487 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
460 lines
17 KiB
C++
460 lines
17 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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// 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 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 flg
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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); }
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#else
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#define wxDECLARE_FONT_COMPAT_SETTER /*empty*/
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#endif
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// this macro must be used in all derived wxFont classes declarations
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#define wxDECLARE_COMMON_FONT_METHODS() \
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wxDECLARE_FONT_COMPAT_SETTER \
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\
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/* functions for modifying font in place */ \
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wxFont& MakeBold(); \
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wxFont& MakeItalic(); \
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wxFont& MakeUnderlined(); \
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wxFont& MakeStrikethrough(); \
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wxFont& MakeLarger() { return Scale(1.2f); } \
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wxFont& MakeSmaller() { return Scale(1/1.2f); } \
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wxFont& Scale(float x); \
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/* functions for creating fonts based on this one */ \
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wxFont Bold() const; \
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wxFont Italic() const; \
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wxFont Underlined() const; \
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wxFont Strikethrough() const; \
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wxFont Larger() const { return Scaled(1.2f); } \
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wxFont Smaller() const { return Scaled(1/1.2f); } \
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wxFont Scaled(float x) const
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// include the real class declaration
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#if defined(__WXMSW__)
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#include "wx/msw/font.h"
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#elif defined(__WXMOTIF__)
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#include "wx/motif/font.h"
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#elif defined(__WXGTK20__)
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#include "wx/gtk/font.h"
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#elif defined(__WXGTK__)
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#include "wx/gtk1/font.h"
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#elif defined(__WXX11__)
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#include "wx/x11/font.h"
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#elif defined(__WXDFB__)
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#include "wx/dfb/font.h"
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#elif defined(__WXMAC__)
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#include "wx/osx/font.h"
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#elif defined(__WXCOCOA__)
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#include "wx/cocoa/font.h"
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#elif defined(__WXPM__)
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#include "wx/os2/font.h"
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#endif
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class WXDLLIMPEXP_CORE wxFontList: public wxGDIObjListBase
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{
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public:
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wxFont *FindOrCreateFont(int pointSize,
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wxFontFamily family,
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wxFontStyle style,
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wxFontWeight weight,
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bool underline = false,
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const wxString& face = wxEmptyString,
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wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
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#if FUTURE_WXWIN_COMPATIBILITY_3_0
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wxFont *FindOrCreateFont(int pointSize, int family, int style, int weight,
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bool underline = false,
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const wxString& face = wxEmptyString,
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wxFontEncoding encoding = wxFONTENCODING_DEFAULT)
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{ return FindOrCreateFont(pointSize, (wxFontFamily)family, (wxFontStyle)style,
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(wxFontWeight)weight, underline, face, encoding); }
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#endif
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#if WXWIN_COMPATIBILITY_2_6
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wxDEPRECATED( void AddFont(wxFont*) );
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wxDEPRECATED( void RemoveFont(wxFont*) );
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#endif
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};
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extern WXDLLIMPEXP_DATA_CORE(wxFontList*) wxTheFontList;
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// provide comparison operators to allow code such as
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//
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// if ( font.GetStyle() == wxFONTSTYLE_SLANT )
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//
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// to compile without warnings which it would otherwise provoke from some
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// compilers as it compares elements of different enums
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#if FUTURE_WXWIN_COMPATIBILITY_3_0
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// Unfortunately some compilers have ambiguity issues when enum comparisons are
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// overloaded so we have to disable the overloads in this case, see
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// wxCOMPILER_NO_OVERLOAD_ON_ENUM definition in wx/platform.h for more details.
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#ifndef wxCOMPILER_NO_OVERLOAD_ON_ENUM
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inline bool operator==(wxFontFamily s, wxDeprecatedGUIConstants t)
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{ return static_cast<int>(s) == static_cast<int>(t); }
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inline bool operator!=(wxFontFamily s, wxDeprecatedGUIConstants t)
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{ return !(s == t); }
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inline bool operator==(wxFontStyle s, wxDeprecatedGUIConstants t)
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{ return static_cast<int>(s) == static_cast<int>(t); }
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inline bool operator!=(wxFontStyle s, wxDeprecatedGUIConstants t)
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{ return !(s == t); }
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inline bool operator==(wxFontWeight s, wxDeprecatedGUIConstants t)
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{ return static_cast<int>(s) == static_cast<int>(t); }
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inline bool operator!=(wxFontWeight s, wxDeprecatedGUIConstants t)
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{ return !(s == t); }
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#endif // // wxCOMPILER_NO_OVERLOAD_ON_ENUM
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#endif // FUTURE_WXWIN_COMPATIBILITY_3_0
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#endif
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// _WX_FONT_H_BASE_
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