376 lines
12 KiB
C
376 lines
12 KiB
C
/****************************************************************************
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* include/nuttx/nx/nxfonts.h
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*
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* Copyright (C) 2008, 2009, 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_NX_NXFONTS_H
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#define __INCLUDE_NUTTX_NX_NXFONTS_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <nuttx/nx/nx.h>
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#include <nuttx/nx/nxglib.h>
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/****************************************************************************
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* Pre-processor definitions
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****************************************************************************/
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/* Select the default font. If no fonts are selected, then a compilation error
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* is likely down the road.
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*/
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/* Sans serif fonts */
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#if defined(CONFIG_NXFONT_SANS23X27) /* The "legacy," tiny NuttX font */
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# define NXFONT_DEFAULT FONTID_SANS23X27
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#elif defined(CONFIG_NXFONT_SANS17X22)
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# define NXFONT_DEFAULT FONTID_SANS17X22
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#elif defined(CONFIG_NXFONT_SANS20X26)
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# define NXFONT_DEFAULT FONTID_SANS20X26
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#elif defined(CONFIG_NXFONT_SANS22X29)
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# define NXFONT_DEFAULT FONTID_SANS22X29
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#elif defined(CONFIG_NXFONT_SANS28X37)
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# define NXFONT_DEFAULT FONTID_SANS28X37
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#elif defined(CONFIG_NXFONT_SANS39X48)
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# define NXFONT_DEFAULT FONTID_SANS39X48
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/* Sans serif bold fonts */
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#elif defined(CONFIG_NXFONT_SANS17X23B)
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# define NXFONT_DEFAULT FONTID_SANS17X23B
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#elif defined(CONFIG_NXFONT_SANS20X27B)
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# define NXFONT_DEFAULT FONTID_SANS20X27B
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#elif defined(CONFIG_NXFONT_SANS22X29B)
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# define NXFONT_DEFAULT FONTID_SANS22X29B
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#elif defined(CONFIG_NXFONT_SANS28X37B)
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# define NXFONT_DEFAULT FONTID_SANS28X37B
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#elif defined(CONFIG_NXFONT_SANS40X49B)
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# define NXFONT_DEFAULT FONTID_SANS40X49B
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/* Serif fonts */
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#elif defined(CONFIG_NXFONT_SERIF22X29)
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# define NXFONT_DEFAULT FONTID_SERIF22X29
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#elif defined(CONFIG_NXFONT_SERIF29X37)
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# define NXFONT_DEFAULT FONTID_SERIF29X37
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#elif defined(CONFIG_NXFONT_SERIF38X48)
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# define NXFONT_DEFAULT FONTID_SERIF38X48
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/* Serif bold fonts */
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#elif defined(CONFIG_NXFONT_SERIF22X28B)
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# define NXFONT_DEFAULT FONTID_SERIF22X28B
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#elif defined(CONFIG_NXFONT_SERIF27X38B)
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# define NXFONT_DEFAULT FONTID_SERIF27X38B
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#elif defined(CONFIG_NXFONT_SERIF38X49B)
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# define NXFONT_DEFAULT FONTID_SERIF38X49B
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* Font IDs */
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enum nx_fontid_e
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{
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FONTID_DEFAULT = 0 /* The default font */
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/* Sans Serif fonts */
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#ifdef CONFIG_NXFONT_SANS17X22
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, FONTID_SANS17X22 = 14 /* The 17x22 sans serif font */
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#endif
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#ifdef CONFIG_NXFONT_SANS20X26
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, FONTID_SANS20X26 = 15 /* The 20x26 sans serif font */
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#endif
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#ifdef CONFIG_NXFONT_SANS23X27
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, FONTID_SANS23X27 = 1 /* The 23x27 sans serif font */
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#endif
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#ifdef CONFIG_NXFONT_SANS22X29
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, FONTID_SANS22X29 = 2 /* The 22x29 sans serif font */
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#endif
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#ifdef CONFIG_NXFONT_SANS28X37
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, FONTID_SANS28X37 = 3 /* The 28x37 sans serif font */
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#endif
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#ifdef CONFIG_NXFONT_SANS39X48
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, FONTID_SANS39X48 = 4 /* The 39x48 sans serif font */
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#endif
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/* Sans Serif bold fonts */
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#ifdef CONFIG_NXFONT_SANS17X23B
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, FONTID_SANS17X23B = 16 /* The 17x23 sans bold font */
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#endif
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#ifdef CONFIG_NXFONT_SANS20X27B
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, FONTID_SANS20X27B = 17 /* The 20x27 sans bold font */
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#endif
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#ifdef CONFIG_NXFONT_SANS22X29B
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, FONTID_SANS22X29B = 5 /* The 22x29 sans bold font */
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#endif
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#ifdef CONFIG_NXFONT_SANS28X37B
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, FONTID_SANS28X37B = 6 /* The 28x37 sans bold font */
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#endif
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#ifdef CONFIG_NXFONT_SANS40X49B
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, FONTID_SANS40X49B = 7 /* The 40x49 sans bold font */
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#endif
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/* Serif fonts */
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#ifdef CONFIG_NXFONT_SERIF22X29
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, FONTID_SERIF22X29 = 8 /* The 22x29 serif font */
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#endif
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#ifdef CONFIG_NXFONT_SERIF29X37
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, FONTID_SERIF29X37 = 9 /* The 29x37 serif font */
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#endif
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#ifdef CONFIG_NXFONT_SERIF38X48
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, FONTID_SERIF38X48 = 10 /* The 38x48 serif font */
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#endif
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/* Serif bold fonts */
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#ifdef CONFIG_NXFONT_SERIF22X28B
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, FONTID_SERIF22X28B = 11 /* The 22x28 serif bold font */
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#endif
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#ifdef CONFIG_NXFONT_SERIF27X38B
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, FONTID_SERIF27X38B = 12 /* The 27x38 serif bold font */
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#endif
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#ifdef CONFIG_NXFONT_SERIF38X49B
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, FONTID_SERIF38X49B = 13 /* The 38x49 serif bold font */
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#endif
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};
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/* This structures provides the metrics for one glyph */
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struct nx_fontmetric_s
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{
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uint32_t stride : 3; /* Width of one font row in bytes */
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uint32_t width : 6; /* Width of the font in bits */
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uint32_t height : 6; /* Height of the font in rows */
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uint32_t xoffset : 6; /* Top, left-hand corner X-offset in pixels */
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uint32_t yoffset : 6; /* Top, left-hand corner y-offset in pixels */
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uint32_t unused : 5;
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};
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/* This structure binds the glyph metrics to the glyph bitmap */
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struct nx_fontbitmap_s
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{
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struct nx_fontmetric_s metric; /* Character metrics */
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FAR const uint8_t *bitmap; /* Pointer to the character bitmap */
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};
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/* This structure describes one contiguous grouping of glyphs that
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* can be described by an array starting with encoding 'first' and
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* extending through (first + nchars - 1).
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*/
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struct nx_fontset_s
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{
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uint8_t first; /* First bitmap character code */
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uint8_t nchars; /* Number of bitmap character codes */
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FAR const struct nx_fontbitmap_s *bitmap;
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};
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/* This structure describes the overall metrics of the fontset */
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struct nx_font_s
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{
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uint8_t mxheight; /* Max height of one glyph in rows */
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uint8_t mxwidth; /* Max width of any glyph in pixels */
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uint8_t mxbits; /* Max number of bits per character code */
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uint8_t spwidth; /* The width of a space in pixels */
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};
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/* Finally, this structure defines everything about the font set */
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struct nx_fontpackage_s
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{
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uint8_t id; /* The font ID */
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FAR const struct nx_font_s metrics; /* Font set metrics */
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FAR const struct nx_fontset_s font7; /* Fonts for 7-bit encoding */
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#if CONFIG_NXFONTS_CHARBITS >= 8
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FAR const struct nx_fontset_s font8; /* Fonts for 8-bit encoding */
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#endif
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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# define EXTERN extern "C"
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extern "C" {
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#else
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# define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: nxf_getfonthandle
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*
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* Description:
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* Given a numeric font ID, return a handle that may be subsequently be
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* used to access the font data sets.
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*
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* Input Parameters:
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* fontid: Identifies the font set to get
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*
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****************************************************************************/
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EXTERN NXHANDLE nxf_getfonthandle(enum nx_fontid_e fontid);
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/****************************************************************************
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* Name: nxf_getfontset
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*
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* Description:
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* Return information about the current font set
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*
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* Input Parameters:
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* handle: A font handle previously returned by nxf_getfonthandle()
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*
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****************************************************************************/
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EXTERN FAR const struct nx_font_s *nxf_getfontset(NXHANDLE handle);
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/****************************************************************************
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* Name: nxf_getbitmap
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*
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* Description:
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* Return font bitmap information for the selected character encoding.
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*
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* Input Parameters:
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* handle: A font handle previously returned by nxf_getfonthandle()
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* ch: Character code whose bitmap is requested
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*
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* Returned Value:
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* An instance of struct nx_fontbitmap_s describing the glyph.
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*
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****************************************************************************/
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EXTERN FAR const struct nx_fontbitmap_s *
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nxf_getbitmap(NXHANDLE handle, uint16_t ch);
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/****************************************************************************
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* Name: nxf_convert_*bpp
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*
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* Description:
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* Convert the 1BPP font to a new pixel depth
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*
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* Input Parameters:
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* dest - The destination buffer provided by the caller.
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* height - The max height of the returned char in rows
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* width - The max width of the returned char in pixels
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* stride - The width of the destination buffer in bytes
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* bm - Describes the character glyph to convert
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* color - The color to use for '1' bits in the font bitmap
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* (0 bits are transparent)
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*
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* Returned Value:
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* OK on Success, ERROR: on failure with errno set appropriately.
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* (never fails)
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*
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****************************************************************************/
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EXTERN int nxf_convert_1bpp(FAR uint8_t *dest, uint16_t height,
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uint16_t width, uint16_t stride,
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FAR const struct nx_fontbitmap_s *bm,
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nxgl_mxpixel_t color);
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EXTERN int nxf_convert_2bpp(FAR uint8_t *dest, uint16_t height,
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uint16_t width, uint16_t stride,
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FAR const struct nx_fontbitmap_s *bm,
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nxgl_mxpixel_t color);
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EXTERN int nxf_convert_4bpp(FAR uint8_t *dest, uint16_t height,
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uint16_t width, uint16_t stride,
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FAR const struct nx_fontbitmap_s *bm,
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nxgl_mxpixel_t color);
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EXTERN int nxf_convert_8bpp(FAR uint8_t *dest, uint16_t height,
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uint16_t width, uint16_t stride,
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FAR const struct nx_fontbitmap_s *bm,
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nxgl_mxpixel_t color);
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EXTERN int nxf_convert_16bpp(FAR uint16_t *dest, uint16_t height,
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uint16_t width, uint16_t stride,
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FAR const struct nx_fontbitmap_s *bm,
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nxgl_mxpixel_t color);
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EXTERN int nxf_convert_24bpp(FAR uint32_t *dest, uint16_t height,
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uint16_t width, uint16_t stride,
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FAR const struct nx_fontbitmap_s *bm,
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nxgl_mxpixel_t color);
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EXTERN int nxf_convert_32bpp(FAR uint32_t *dest, uint16_t height,
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uint16_t width, uint16_t stride,
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FAR const struct nx_fontbitmap_s *bm,
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nxgl_mxpixel_t color);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __INCLUDE_NUTTX_NX_NXFONTS_H */
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