1wxFont(3)                  Erlang Module Definition                  wxFont(3)
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3
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NAME

6       wxFont - Functions for wxFont class
7

DESCRIPTION

9       A font is an object which determines the appearance of text.
10
11       Fonts  are  used  for drawing text to a device context, and setting the
12       appearance of a window's text,  see  wxDC:setFont/2  and  wxWindow:set‐
13       Font/2.
14
15       The  easiest  way to create a custom font is to use wxFontInfo (not im‐
16       plemented in wx) object to specify the font  attributes  and  then  use
17       new/5  constructor. Alternatively, you could start with one of the pre-
18       defined fonts or use wxWindow:getFont/1 and modify the  font,  e.g.  by
19       increasing  its  size  using  MakeLarger()  (not  implemented in wx) or
20       changing its weight using MakeBold() (not implemented in wx).
21
22       This class uses reference counting and copy-on-write internally so that
23       assignments between two instances of this class are very cheap. You can
24       therefore use actual objects instead  of  pointers  without  efficiency
25       problems.  If  an  instance of this class is changed it will create its
26       own data internally so that other instances,  which  previously  shared
27       the data using the reference counting, are not affected.
28
29       You  can  retrieve  the  current system font settings with wxSystemSet‐
30       tings.
31
32       Predefined objects (include wx.hrl): ?wxNullFont, ?wxNORMAL_FONT, ?wxS‐
33       MALL_FONT, ?wxITALIC_FONT, ?wxSWISS_FONT
34
35       See:  Overview  font,  wxDC:setFont/2, wxDC:drawText/3, wxDC:getTextEx‐
36       tent/3, wxFontDialog, wxSystemSettings
37
38       wxWidgets docs: wxFont
39

DATA TYPES

41       wxFont() = wx:wx_object()
42

EXPORTS

44       new() -> wxFont()
45
46              Default ctor.
47
48       new(NativeInfoString) -> wxFont()
49
50       new(Font) -> wxFont()
51
52              Types:
53
54                 Font = wxFont()
55
56              Copy constructor, uses reference counting.
57
58       new(PointSize, Family, Style, Weight) -> wxFont()
59
60       new(PixelSize, Family, Style, Weight) -> wxFont()
61
62              Types:
63
64                 PixelSize = {W :: integer(), H :: integer()}
65                 Family = Style = Weight = wx:wx_enum()
66
67       new(PointSize, Family, Style, Weight, Options :: [Option]) ->
68              wxFont()
69
70       new(PixelSize, Family, Style, Weight, Options :: [Option]) ->
71              wxFont()
72
73              Types:
74
75                 PixelSize = {W :: integer(), H :: integer()}
76                 Family = Style = Weight = wx:wx_enum()
77                 Option =
78                     {underline, boolean()} |
79                     {faceName, unicode:chardata()} |
80                     {encoding, wx:wx_enum()}
81
82              Creates a font object with the specified attributes and size  in
83              pixels.
84
85              Notice  that  the  use of this constructor is often more verbose
86              and less readable than the use of  constructor  from  wxFontInfo
87              (not  implemented  in  wx),  consider using that constructor in‐
88              stead.
89
90              Remark: If the desired font does not exist,  the  closest  match
91              will  be chosen. Under Windows, only scalable TrueType fonts are
92              used.
93
94       destroy(This :: wxFont()) -> ok
95
96              Destructor.
97
98              See reference-counted object destruction for more info.
99
100              Remark: Although all remaining fonts are deleted when the appli‐
101              cation  exits,  the application should try to clean up all fonts
102              itself. This is because wxWidgets cannot know if  a  pointer  to
103              the  font object is stored in an application data structure, and
104              there is a risk of double deletion.
105
106       isFixedWidth(This) -> boolean()
107
108              Types:
109
110                 This = wxFont()
111
112              Returns true if the font is a fixed width (or monospaced)  font,
113              false if it is a proportional one or font is invalid.
114
115              Note  that  this function under some platforms is different from
116              just testing for the  font  family  being  equal  to  wxFONTFAM‐
117              ILY_TELETYPE because native platform-specific functions are used
118              for the check (resulting in a more accurate return value).
119
120       getDefaultEncoding() -> wx:wx_enum()
121
122              Returns the current application's default encoding.
123
124              See: Overview fontencoding, setDefaultEncoding/1
125
126       getFaceName(This) -> unicode:charlist()
127
128              Types:
129
130                 This = wxFont()
131
132              Returns the face name associated with the  font,  or  the  empty
133              string if there is no face information.
134
135              See: setFaceName/2
136
137       getFamily(This) -> wx:wx_enum()
138
139              Types:
140
141                 This = wxFont()
142
143              Gets the font family if possible.
144
145              As  described in ?wxFontFamily docs the returned value acts as a
146              rough, basic classification of the main font  properties  (look,
147              spacing).
148
149              If  the current font face name is not recognized by wxFont or by
150              the underlying system, wxFONTFAMILY_DEFAULT is returned.
151
152              Note that currently this function is not very precise and so not
153              particularly  useful.  Font  families mostly make sense only for
154              font creation, see setFamily/2.
155
156              See: setFamily/2
157
158       getNativeFontInfoDesc(This) -> unicode:charlist()
159
160              Types:
161
162                 This = wxFont()
163
164              Returns the platform-dependent string completely describing this
165              font.
166
167              Returned  string  is always non-empty unless the font is invalid
168              (in which case an assert is triggered).
169
170              Note that the returned string is not meant to be shown or edited
171              by  the  user: a typical use of this function is for serializing
172              in string-form a wxFont object.
173
174              See: SetNativeFontInfo() (not  implemented  in  wx),  getNative‐
175              FontInfoUserDesc/1
176
177       getNativeFontInfoUserDesc(This) -> unicode:charlist()
178
179              Types:
180
181                 This = wxFont()
182
183              Returns a user-friendly string for this font object.
184
185              Returned  string  is always non-empty unless the font is invalid
186              (in which case an assert is triggered).
187
188              The string does not encode all wxFont infos under all platforms;
189              e.g.  under wxMSW the font family is not present in the returned
190              string.
191
192              Some examples of the formats  of  returned  strings  (which  are
193              platform-dependent)  are in SetNativeFontInfoUserDesc() (not im‐
194              plemented in wx).
195
196              See: SetNativeFontInfoUserDesc() (not implemented in wx), getNa‐
197              tiveFontInfoDesc/1
198
199       getPointSize(This) -> integer()
200
201              Types:
202
203                 This = wxFont()
204
205              Gets the point size as an integer number.
206
207              This function is kept for compatibility reasons. New code should
208              use GetFractionalPointSize() (not implemented in wx) and support
209              fractional point sizes.
210
211              See: setPointSize/2
212
213              See: GetFractionalPointSize() (not implemented in wx)
214
215       getStyle(This) -> wx:wx_enum()
216
217              Types:
218
219                 This = wxFont()
220
221              Gets the font style.
222
223              See ?wxFontStyle for a list of valid styles.
224
225              See: setStyle/2
226
227       getUnderlined(This) -> boolean()
228
229              Types:
230
231                 This = wxFont()
232
233              Returns true if the font is underlined, false otherwise.
234
235              See: setUnderlined/2
236
237       getWeight(This) -> wx:wx_enum()
238
239              Types:
240
241                 This = wxFont()
242
243              Gets the font weight.
244
245              See ?wxFontWeight for a list of valid weight identifiers.
246
247              See: setWeight/2
248
249       ok(This) -> boolean()
250
251              Types:
252
253                 This = wxFont()
254
255              See: isOk/1.
256
257       isOk(This) -> boolean()
258
259              Types:
260
261                 This = wxFont()
262
263              Returns true if this object is a valid font, false otherwise.
264
265       setDefaultEncoding(Encoding) -> ok
266
267              Types:
268
269                 Encoding = wx:wx_enum()
270
271              Sets the default font encoding.
272
273              See: Overview fontencoding, getDefaultEncoding/0
274
275       setFaceName(This, FaceName) -> boolean()
276
277              Types:
278
279                 This = wxFont()
280                 FaceName = unicode:chardata()
281
282              Sets the facename for the font.
283
284              Remark:  To avoid portability problems, don't rely on a specific
285              face, but specify the font family instead (see ?wxFontFamily and
286              setFamily/2).
287
288              Return:  true  if  the  given face name exists; if the face name
289              doesn't exist in the user's system then the font is  invalidated
290              (so that isOk/1 will return false) and false is returned.
291
292              See: getFaceName/1, setFamily/2
293
294       setFamily(This, Family) -> ok
295
296              Types:
297
298                 This = wxFont()
299                 Family = wx:wx_enum()
300
301              Sets the font family.
302
303              As  described  in ?wxFontFamily docs the given family value acts
304              as a rough, basic indication of the main font properties  (look,
305              spacing).
306
307              Note  that changing the font family results in changing the font
308              face name.
309
310              See: getFamily/1, setFaceName/2
311
312       setPointSize(This, PointSize) -> ok
313
314              Types:
315
316                 This = wxFont()
317                 PointSize = integer()
318
319              Sets the font size in points to an integer value.
320
321              This is a legacy version of the function only supporting integer
322              point  sizes.  It  can still be used, but to avoid unnecessarily
323              restricting the font size in points to integer values,  consider
324              using  the  new  (added  in wxWidgets 3.1.2) SetFractionalPoint‐
325              Size() (not implemented in wx) function instead.
326
327       setStyle(This, Style) -> ok
328
329              Types:
330
331                 This = wxFont()
332                 Style = wx:wx_enum()
333
334              Sets the font style.
335
336              See: getStyle/1
337
338       setUnderlined(This, Underlined) -> ok
339
340              Types:
341
342                 This = wxFont()
343                 Underlined = boolean()
344
345              Sets underlining.
346
347              See: getUnderlined/1
348
349       setWeight(This, Weight) -> ok
350
351              Types:
352
353                 This = wxFont()
354                 Weight = wx:wx_enum()
355
356              Sets the font weight.
357
358              See: getWeight/1
359
360
361
362wxWidgets team.                    wx 2.3.1                          wxFont(3)