mirror of https://github.com/VDR4Arch/vdr.git
82 lines
2.9 KiB
C++
82 lines
2.9 KiB
C++
/*
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* font.h: Font handling for the DVB On Screen Display
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: font.h 1.16 2007/06/10 12:58:54 kls Exp $
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*/
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#ifndef __FONT_H
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#define __FONT_H
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#include <stdint.h>
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#include <stdlib.h>
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#define MAXFONTNAME 64
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#define MAXFONTSIZE 64
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#define FONTDIR "/usr/share/fonts/truetype"
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enum eDvbFont {
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fontOsd,
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fontFix,
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fontSml
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#define eDvbFontSize (fontSml + 1)
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};
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class cBitmap;
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typedef uint32_t tColor; // see also osd.h
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typedef uint8_t tIndex;
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class cFont {
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private:
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static cFont *fonts[];
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public:
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virtual ~cFont() {}
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virtual int Width(uint c) const = 0;
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///< Returns the width of the given character in pixel.
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virtual int Width(const char *s) const = 0;
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///< Returns the width of the given string in pixel.
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virtual int Height(void) const = 0;
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///< Returns the height of this font in pixel (all characters have the same height).
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int Height(const char *s) const { return Height(); }
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///< Returns the height of this font in pixel (obsolete, just for backwards compatibilty).
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virtual void DrawText(cBitmap *Bitmap, int x, int y, const char *s, tColor ColorFg, tColor ColorBg, int Width) const = 0;
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///< Draws the given text into the Bitmap at position (x, y) with the given colors.
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///< The text will not exceed the given Width (if > 0), and will end with a complete character.
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static void SetFont(eDvbFont Font, const char *Name, int CharHeight);
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///< Sets the given Font to use the font data from the file Name and make its characters
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///< CharHeight pixels high.
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static const cFont *GetFont(eDvbFont Font);
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///< Gets the given Font, which was previously set by a call to SetFont().
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///< If no SetFont() call has been made, the font as defined in the setup is returned.
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///< The caller must not use the returned font outside the scope in which
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///< it was retrieved by the call to GetFont(), because a call to SetFont()
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///< may delete an existing font.
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};
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class cTextWrapper {
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private:
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char *text;
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char *eol;
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int lines;
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int lastLine;
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public:
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cTextWrapper(void);
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cTextWrapper(const char *Text, const cFont *Font, int Width);
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~cTextWrapper();
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void Set(const char *Text, const cFont *Font, int Width);
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///< Wraps the Text to make it fit into the area defined by the given Width
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///< when displayed with the given Font.
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///< Wrapping is done by inserting the necessary number of newline
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///< characters into the string.
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const char *Text(void);
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///< Returns the full wrapped text.
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int Lines(void) { return lines; }
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///< Returns the actual number of lines needed to display the full wrapped text.
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const char *GetLine(int Line);
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///< Returns the given Line. The first line is numbered 0.
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};
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#endif //__FONT_H
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