c99accc70e
Created gdisp_fonts.h to describe the internal structure of a font. Moved template directory to templates and created a sub-folder for each low level driver type. Moved the pre-defined font data and emulation code into better locations. Changed the emulation code to be included in the low level driver (where it should be) instead of the high level driver. Added new low level driver gdispS6d1121 (someone please test) Updated and added new readme's.
104 lines
3.6 KiB
C
104 lines
3.6 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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---
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes ChibiOS/RT, without being obliged to provide
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the source code for any proprietary components. See the file exception.txt
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for full details of how and when the exception can be applied.
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*/
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/*
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Concepts and parts of this file have been contributed by:
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Joel Bodenmann aka Tectu -> Maintainer
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Andrew Hannam aka inmarket -> Framework
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Badger -> console implementation and FSMC
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Abhishek -> font rendering
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Ben William -> fastMath and lcdDrawEllipse()
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Dongxu Li aka dxli -> lcdDrawEllipse() filled option
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*/
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/**
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* @file gdisp_fonts.h
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* @brief GDISP internal font definitions.
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* @details This is not generally needed by an application. It is used
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* by the low level drivers that need to understand a font.
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*
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* @addtogroup GDISP
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* @{
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*/
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#ifndef _GDISP_FONTS_H
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#define _GDISP_FONTS_H
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/**
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* @brief The maximum height of a font.
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* @details Either 16 or 32. Defaults to 16
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* @note Setting this to 32 causes the font tables to take
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* twice the internal program memory.
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*/
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#ifndef GDISP_MAX_FONT_HEIGHT
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#define GDISP_MAX_FONT_HEIGHT 16
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#endif
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/**
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* @brief The type of a font column.
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* @note Set by defining @p GDISP_MAX_FNT_HEIGHT appropriately.
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*/
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#if GDISP_MAX_FONT_HEIGHT == 16
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typedef uint16_t fontcolumn_t;
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#elif GDISP_MAX_FONT_HEIGHT == 32
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typedef uint32_t fontcolumn_t;
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#else
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#error "GDISP: GDISP_MAX_FONT_HEIGHT must be either 16 or 32"
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#endif
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/**
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* @brief Internal font structure.
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* @note This structure is followed by:
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* 1. An array of character widths (uint8_t)
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* 2. An array of column data offsets (relative to the font structure)
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* 3. Each characters array of column data (fontcolumn_t)
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* Each sub-structure must be padded to a multiple of 8 bytes
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* to allow the tables to work accross many different compilers.
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*/
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struct font {
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uint8_t height;
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uint8_t charPadding;
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uint8_t lineSpacing;
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uint8_t descenderHeight;
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uint8_t minWidth;
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uint8_t maxWidth;
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char minChar;
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char maxChar;
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uint16_t offsetTableOffset;
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uint16_t unused1; /* ensure next field is padded to 8 byte boundary */
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uint8_t widthTable[];
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};
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/**
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* @brief Macro's to get to the complex parts of the font structure.
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*/
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#define _getFontPart(f,o,t) ((t)(&((const uint8_t *)(f))[(o)]))
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#define _getCharWidth(f,c) (((c) < (f)->minChar || (c) > (f)->maxChar) ? 0 : (f)->widthTable[c - (f)->minChar])
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#define _getCharOffset(f,c) (_getFontPart((f), (f)->offsetTableOffset, const uint16_t *)[c - (f)->minChar])
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#define _getCharData(f,c) _getFontPart((f), _getCharOffset((f),(c)), const fontcolumn_t *)
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#endif /* _GDISP_FONTS_H */
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/** @} */
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