PRINTWIDTH: Difference between revisions
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Code by Ted Weissgerber
Note: The SUB procedure does not need the font handle for font sizes after _FONT enables one.
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(Created page with "{{DISPLAYTITLE:_PRINTWIDTH}}{{DISPLAYTITLE:}} The _PRINTWIDTH function returns the width in pixels of the text string specified. {{PageSyntax}} : {{Parameter|pixelWidth%}} = _PRINTWIDTH({{Parameter|textToPrint$}}[, {{Parameter|destinationHandle&}}]) {{PageDescription}} * {{Parameter|textToPrint$}} is any literal or variable STRING value. * If the {{Parameter|destinationHandle&}} is omitted, the current destination image or screen page is used....") |
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{{DISPLAYTITLE:_PRINTWIDTH | {{DISPLAYTITLE:_PRINTWIDTH}} | ||
The [[_PRINTWIDTH]] function returns the width in pixels of the text [[STRING|string]] specified. | The [[_PRINTWIDTH]] function returns the width in pixels of the text [[STRING|string]] specified. | ||
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{{PageExamples}} | {{PageExamples}} | ||
''Example:'' SUB returns font or screen mode's text block size using _PRINTWIDTH and [[_FONTHEIGHT]] without a handle parameter. | ''Example:'' SUB returns font or screen mode's text block size using _PRINTWIDTH and [[_FONTHEIGHT]] without a handle parameter. | ||
{{CodeStart}} | {{CodeStart}} | ||
{{Cl|DO}} | {{Cl|DO}} | ||
{{Cl|INPUT}} "Enter Screen mode 1, 2 or 7 to 13: ", scr$ | {{Cl|INPUT}} "Enter Screen mode 1, 2 or 7 to 13: ", scr$ | ||
mode% = {{Cl|VAL}}(scr$) | mode% = {{Cl|VAL}}(scr$) | ||
{{Cl|LOOP}} {{Cl|UNTIL}} mode% > 0 | {{Cl|LOOP}} {{Cl|UNTIL}} mode% > 0 | ||
{{Cl | {{Cl|SCREEN}} mode% | ||
{{Cl|INPUT}} "Enter first name of TTF font to use or hit enter for text size: ", TTFont$ | {{Cl|INPUT}} "Enter first name of TTF font to use or hit enter for text size: ", TTFont$ | ||
{{Cl|IF}} {{Cl|LEN}}(TTFont$) {{Cl|THEN}} {{Cl|INPUT (file mode)|INPUT}} "Enter font height: ", hi$ | {{Cl|IF}} {{Cl|LEN}}(TTFont$) {{Cl|THEN}} {{Cl|INPUT (file mode)|INPUT}} "Enter font height: ", hi$ | ||
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{{Cl|SUB}} TextSize (TextWidth&, TextHeight&) | {{Cl|SUB}} TextSize (TextWidth&, TextHeight&) | ||
TextWidth& = {{Cl|_PRINTWIDTH}}("W") 'measure width of one font or text character | TextWidth& = {{Cl|_PRINTWIDTH}}("W") 'measure width of one font or text character | ||
TextHeight& = {{Cl|_FONTHEIGHT}} 'can measure normal text block heights also | TextHeight& = {{Cl|_FONTHEIGHT}} 'can measure normal text block heights also | ||
{{Cl|END SUB}} | {{Cl|END SUB}} | ||
{{CodeEnd}} | {{CodeEnd}} | ||
{{ | {{Small|Code by Ted Weissgerber}} | ||
<center>'''Note:''' The SUB procedure does not need the font handle for font sizes after [[_FONT]] enables one.</center> | <center>'''Note:''' The SUB procedure does not need the font handle for font sizes after [[_FONT]] enables one.</center> | ||
Latest revision as of 22:43, 11 February 2023
The _PRINTWIDTH function returns the width in pixels of the text string specified.
Syntax
- pixelWidth% = _PRINTWIDTH(textToPrint$[, destinationHandle&])
Description
- textToPrint$ is any literal or variable STRING value.
- If the destinationHandle& is omitted, the current destination image or screen page is used.
- Useful to find the width of the font print string before actually printing it.
- Can be used with variable-width fonts or built-in fonts, unlike _FONTWIDTH which requires a MONOSPACE font handle.
- In SCREEN 0, _PRINTWIDTH returns the character length of a text string, exactly as LEN(textToPrint$) (version 1.000 and up).
Examples
Example: SUB returns font or screen mode's text block size using _PRINTWIDTH and _FONTHEIGHT without a handle parameter.
DO INPUT "Enter Screen mode 1, 2 or 7 to 13: ", scr$ mode% = VAL(scr$) LOOP UNTIL mode% > 0 SCREEN mode% INPUT "Enter first name of TTF font to use or hit enter for text size: ", TTFont$ IF LEN(TTFont$) THEN INPUT "Enter font height: ", hi$ height& = VAL(hi$) IF height& > 0 THEN _FONT _LOADFONT("C:\Windows\Fonts\" + TTFont$ + ".ttf", height&, style$) TextSize wide&, high& 'get the font or current screen mode's text block pixel size _PRINTSTRING (20, 100), CHR$(1) + STR$(wide&) + " X" + STR$(high&) + " " + CHR$(2) END SUB TextSize (TextWidth&, TextHeight&) TextWidth& = _PRINTWIDTH("W") 'measure width of one font or text character TextHeight& = _FONTHEIGHT 'can measure normal text block heights also END SUB |
See also