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XmFontSelector(3X) XmFontSelector(3X) NAME The Font Selector widget SYNOPSIS #include <Xm/FontS.h> DESCRIPTION The Font Selector widget allows users to easily choose a font by se- lecting the font family and size of the font. The bold and italic at- tributes may also be set for any font for which they are available. Any font may be passed to the font selector by the application as the ini- tial value shown to the user. Advanced features greatly extend the wid- get's functionality. Basic Features The font selector widget presents the user with two combination box widgets, one with a list of choices for the font family, and the other with the choices for the font size. In addition there are two indepen- dent toggle buttons that allow the user to make the font bold or italic or bold/italic. Below the font choice area is a text widget that dis- plays sample text of the chosen font to the user. This text area is ed- itable, allowing the user to add or remove text to see how various characters appear in the chosen font. For the novice user this set of features allows access to all standard fonts on the system. The font selector dynamically removes choices that are inappropriate so the user is free to play around with different combinations and can always be assured that once they have selected a font that it will exist on the machine that the font selector is running on. For example if there is no Times Roman 14 point font available, and the user selects a point size of 14, then Times Roman will not be available in the family combi- nation box. Likewise, if the user had chosen Times Roman from the fam- ily dialog box then a size of 14 would not be shown. To have all choices available simply choose a size and family of Any. Advanced Features For the advanced user the font selector provides tremendous flexibility in font choices. By activating the options button an additional panel of controls is presented to the user. This allows the user to gain ac- cess to non-XLFD fonts, control the resolutions of the fonts chosen, choose from fixed or proportional fonts only, remove the use of font scaling, allow non iso8859-1 fonts to be viewed, and see the XLFD name the font selector is constructing. Non XLFD Fonts By choosing the "Other Fonts" toggle from the option panel, the family and size lists, as well as the bold and italic toggles, are replaced with a combo box containing all non-XLFD fonts available on your sys- tem. This feature allows users to select non-XLFD fonts with the FontS- elector. The text field of the combination box may be edited by the user and any string entered will be interpreted as a font name. It should be noted that XLFD names can be typed in by hand here. This fea- ture allows the font selector to be used to get any font on the entire system. Resolution Control The font selector finds which of the two standard resolutions the cur- rent display is closest to and uses that as its default. To allow a wider range of choices a user may choose to access fonts of a different resolution, or both 75 and 100 dpi resolutions. Fixed or Proportional In most cases the fact that a font is fixed width or proportional is of no great interest to the user. But some applications require a fixed width font, such as terminal emulators, and most people find that pro- portional fonts look better. The Font selector allows users to limit the font choices to fixed width or proportional or to allow both. Font Scaling The font scaling technology that is available in X11R5 uses bitmap scaling which, although useful in some cases, generally results in very ugly fonts. We noticed that users often wanted to know which fonts are scaled and which ones exist as hand crafted bitmaps. To remove the scaled fonts from the list of choices, toggle the "Use Font Scaling" button off. This value is resource controllable and defaults to on, which uses font scaling. Encoding The programmer can specify which encidings are valid selctions. These encoding choices appear in an option menu. The list of font choices is restricted to those which use the current selected coding. XLFD Name Display Clicking the Show toggle displays the current font's XLFD name is shown at the bottom of the font selector. Normal Resources Name Class Type InitialValue 100DPIstring 100DPIString XmString "100 dpi" 75DPIstring 75DPIString XmString "75 dpi" anyLowerString AnyLowerString XmString "any" anyString AnyString XmString "Any" boldString BoldString XmString "Bold" bothString BothString XmString "Both" currentFont String String NULL defaultEncodingString DefaultEncodingString String "iso8859-1" encodingList EncodingList StringTable "iso8859-1" encodingString EncodingString XmString "Encoding" familyString BothString XmString "Family" italicString ItalicString XmString "Italic" marginHeight Margin Dimension 0 monoSpaceString MonoSpaceString XmString "Fixed Width Fonts" optionString OptionString XmString "Options ..." otherString OtherString XmString "Other Fonts" propSpaceString PropSpaceString XmString "Proportional Fonts" sampleText SampleText XmString "abcdef..." scalingString ScalingString XmString "Use Font Scaling" showFontName ShowFontName Boolean False showNameString ShowNameString XmString "Show Font Name" sizeString SizeString XmSring "Size" spacing Spacing Dimension 2 textRows TextRows Dimension 8 useScaling Boolean Boolean True valueChangedCallback Callback XtCallbackList NULL xlfdString XlfdString XmString "Xlfd Fonts" All resource names begin with XmN and all resource class names begin with XmC. 100DPSString The label for the 100 DPI radio button. 75DPSString The label for the 75 DPI radio button. anyLowerString The label for the any button. anyString The label for the Any button. boldString The label for the Bold toggle button. bothString The labels for the Both radio buttons controlling both the dpi and width of the fonts displayed. The same resource is used to ensure con- sistent labels. currentFont This resource provides the main application input and output to the font selector. If the programmer sets the value at creation time or with XtSetValues then the currently displayed family, size, bold and italic will be changed to correspond to the values shown in the current font. Otherwise, the name of the font will be shown. The Font Selec- tor's mode will be set to correspond to the type of font passed. Note: currentFont must contain 14 hyphens (-) to be considered an XLFD font. This resource is also used to retrieve the font the user has se- lected from the font selector. The value returned is only valid until the next time XtGetValues is called on this instance of the font selec- tor widget. defaultEncodingString This resource is the default selection from the Encoding options menu. encodingList This resource is the list of encodings available from the FontSelector Encoding options menu. encodingString This resource is the default selection from the Encoding options menu. familyString This resource is the default selection from the Family options menu. isoFontsOnly This resource controls and maintains the state of the iso8859-1 fonts only toggle button. italicString This resource is the default selection from the Italic toggle button. marginHeight The margin height for all subwidgets of the Font Selector. monoSpaceString The label of the Fixed Width Fonts radio button. optionString The label for the Options... push button. otherString The label for the Other Fonts radio button. propSpaceString The label for the Proportional Fonts radio button. sampleText The string which appears in the sample text area. scalingString The label for the Use Font Scaling toggle button. showFontName This boolean resource controls and maintains the state of Show Font Name toggle button. showNameString The label of the Show Font Name toggle button. sizeString The label for the Size option menu. spacing The space between the toggle indicator and the toggle label. textRows This resource controls the number of rows that are shown in the text widget that displays sample text in the currently selected font. Since this is a scrolled text widget it will never dynamically change size, regardless of the font displayed. Unless the initial font is large this value should be at least 4 or the user interaction may be poor. useScaling This resource controls and maintains the state of the Use Font Scaling toggle button. valueChangedCallback The list of callbacks called when the XmNcurrentFont value is changed. xlfdString The label for the Xlfd Fonts radio button. Convenience Routine XmCreateFontSelector - Widget creation convenience routine Widget XmCreateFontSelector( Widget parent, /* Widget id of parent for FontSelector */ String name, /* Name of the created widget */ ArgList args, /* argument list */ Cardinal num_args /* number of items in argument list */ ) Children The font selector is composed of many sub-widgets. As with all widgets, most values passed to this widget through the argument list at cre- ation time or via set values are passed to each of this widget's chil- dren. Get values requests must be made on a child by child basis. The children of the font selector are listed below. The documentation for each of the children should be consulted for a list of resources for each child. XiFontSelector<named by application> XiPanedtopPane XmComboBoxfamilies < See XmComboBox for list of children > XmSeparatorseparator XiComboBoxsizes < See XmComboBox for list of children > XmSeparatorseparator XmButtonBoxboldItalicBox XmToggleButtonboldButton XmToggleButtonitalicButton XmSeparatorseparator XmToggleButtonoptionButton XmSeparatorseparator XmPanedmiddlePane XmPanedleftPane XmButtonBoxchoiceBox XmToggleButtonxlfdButton XmToggleButtonotherButton XmSeparatorseparator XmButtonBoxresolutionBox XmToggleButtondpi75Button XmToggleButtondpi100Button XmToggleButtonanyButton XmSeparatorseparator XmSeparatorseparator XmButtonBoxspacingBox XmToggleButtonproportionalButton XmToggleButtonmonoButton XmToggleButtonbothButton XmSeparatorseparator XmButtonBoxotherChoiceBox XmToggleButtonscalingButton XmToggleButtonisoButton XmToggleButtonshowNameButton XmRowColum encodingOptionMenu XmLabelGadget OptionLabel XmCascadeButtonGadget OptionButton XmMenuShell menuShell XmRowColum pulldownMenu <dependent on XmNencoding> XmSeparatorseparator XmSeparatorseparator XmButtonBoxbox XmScrolledWindowtextSW XmScrollBarvbar XmTexttext XmSeparatorseparator XmLabelnameLabel XmSeparatorseparator COPYRIGHT Copyright (c) 1992 by Integrated Computer Solutions, Inc. XmFontSelector(3X)
NAME | SYNOPSIS | DESCRIPTION | Basic Features | Advanced Features | Non XLFD Fonts | Resolution Control | Fixed or Proportional | Font Scaling | Encoding | XLFD Name Display | Normal Resources | 100DPSString | 75DPSString | anyLowerString | anyString | boldString | bothString | currentFont | defaultEncodingString | encodingList | encodingString | familyString | isoFontsOnly | italicString | marginHeight | monoSpaceString | optionString | otherString | propSpaceString | sampleText | scalingString | showFontName | showNameString | sizeString | spacing | textRows | useScaling | valueChangedCallback | xlfdString | Convenience Routine | XmCreateFontSelector - Widget creation convenience routine | Children | COPYRIGHT
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