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Diffstat (limited to 'nuttx/graphics/nxfonts/nxfonts_getfont.c')
-rw-r--r-- | nuttx/graphics/nxfonts/nxfonts_getfont.c | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/nuttx/graphics/nxfonts/nxfonts_getfont.c b/nuttx/graphics/nxfonts/nxfonts_getfont.c new file mode 100644 index 000000000..e17d3be31 --- /dev/null +++ b/nuttx/graphics/nxfonts/nxfonts_getfont.c @@ -0,0 +1,411 @@ +/**************************************************************************** + * graphics/nxfonts/nxfonts_getfont.c + * + * Copyright (C) 2008-2009, 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT} + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING} + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <stddef.h> +#include <debug.h> + +#include <nuttx/nx/nx.h> +#include <nuttx/nx/nxfonts.h> + +#include "nxfonts_internal.h" + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/* SANS */ + +#ifdef CONFIG_NXFONT_SANS17X22 +extern const struct nx_fontpackage_s g_sans17x22_package; +#endif + +#ifdef CONFIG_NXFONT_SANS20X26 +extern const struct nx_fontpackage_s g_sans20x26_package; +#endif + +#ifdef CONFIG_NXFONT_SANS23X27 +extern const struct nx_fontpackage_s g_sans23x27_package; +#endif + +#ifdef CONFIG_NXFONT_SANS22X29 +extern const struct nx_fontpackage_s g_sans22x29_package; +#endif + +#ifdef CONFIG_NXFONT_SANS28X37 +extern const struct nx_fontpackage_s g_sans28x37_package; +#endif + +#ifdef CONFIG_NXFONT_SANS39X48 +extern const struct nx_fontpackage_s g_sans39x48_package; +#endif + +/* SANS-BOLD */ + +#ifdef CONFIG_NXFONT_SANS17X23B +extern const struct nx_fontpackage_s g_sans17x23b_package; +#endif + +#ifdef CONFIG_NXFONT_SANS20X27B +extern const struct nx_fontpackage_s g_sans20x27b_package; +#endif + +#ifdef CONFIG_NXFONT_SANS22X29B +extern const struct nx_fontpackage_s g_sans22x29b_package; +#endif + +#ifdef CONFIG_NXFONT_SANS28X37B +extern const struct nx_fontpackage_s g_sans28x37b_package; +#endif + +#ifdef CONFIG_NXFONT_SANS40X49B +extern const struct nx_fontpackage_s g_sans40x49b_package; +#endif + +/* SERIF */ + +#ifdef CONFIG_NXFONT_SERIF22X29 +extern const struct nx_fontpackage_s g_serif22x29_package; +#endif + +#ifdef CONFIG_NXFONT_SERIF29X37 +extern const struct nx_fontpackage_s g_serif29x37_package; +#endif + +#ifdef CONFIG_NXFONT_SERIF38X48 +extern const struct nx_fontpackage_s g_serif38x48_package; +#endif + +/* SERIF-BOLD */ + +#ifdef CONFIG_NXFONT_SERIF22X28B +extern const struct nx_fontpackage_s g_serif22x28b_package; +#endif + +#ifdef CONFIG_NXFONT_SERIF27X38B +extern const struct nx_fontpackage_s g_serif27x38b_package; +#endif + +#ifdef CONFIG_NXFONT_SERIF38X49 +extern const struct nx_fontpackage_s g_serif38x49b_package; +#endif + +static FAR const struct nx_fontpackage_s *g_fontpackages[] = +{ + +/* SANS */ + +#ifdef CONFIG_NXFONT_SANS17X22 + &g_sans17x22_package, +#endif + +#ifdef CONFIG_NXFONT_SANS20X26 + &g_sans20x26_package, +#endif + +#ifdef CONFIG_NXFONT_SANS23X27 + &g_sans23x27_package, +#endif + +#ifdef CONFIG_NXFONT_SANS22X29 + &g_sans22x29_package, +#endif + +#ifdef CONFIG_NXFONT_SANS28X37 + &g_sans28x37_package, +#endif + +#ifdef CONFIG_NXFONT_SANS39X48 + &g_sans39x48_package, +#endif + +/* SANS-BOLD */ + +#ifdef CONFIG_NXFONT_SANS17X23B + &g_sans17x23b_package, +#endif + +#ifdef CONFIG_NXFONT_SANS20X27B + &g_sans20x27b_package, +#endif + +#ifdef CONFIG_NXFONT_SANS22X29B + &g_sans22x29b_package, +#endif + +#ifdef CONFIG_NXFONT_SANS28X37B + &g_sans28x37b_package, +#endif + +#ifdef CONFIG_NXFONT_SANS40X49B + &g_sans40x49b_package, +#endif + +/* SERIF */ + +#ifdef CONFIG_NXFONT_SERIF22X29 + &g_serif22x29_package, +#endif + +#ifdef CONFIG_NXFONT_SERIF29X37 + &g_serif29x37_package, +#endif + +#ifdef CONFIG_NXFONT_SERIF38X48 + &g_serif38x48_package, +#endif + +/* SERIF-BOLD */ + +#ifdef CONFIG_NXFONT_SERIF22X28B + &g_serif22x28b_package, +#endif + +#ifdef CONFIG_NXFONT_SERIF27X38B + &g_serif27x38b_package, +#endif + +#ifdef CONFIG_NXFONT_SERIF38X49B + &g_serif38x49b_package, +#endif + + NULL +}; + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxf_getglyphset + * + * Description: + * Return information about the font set containtined he selected + * character encoding. + * + * Input Parameters: + * ch: character code + * package: The selected font package + * + ****************************************************************************/ + +static inline FAR const struct nx_fontset_s * + nxf_getglyphset(uint16_t ch, FAR const struct nx_fontpackage_s *package) +{ + FAR const struct nx_fontset_s *fontset; + + /* Select the 7- or 8-bit font set */ + + if (ch < 128) + { + /* Select the 7-bit font set */ + + fontset = &package->font7; + } + else if (ch < 256) + { +#if CONFIG_NXFONTS_CHARBITS >= 8 + /* Select the 8-bit font set */ + + fontset = &package->font8; +#else + gdbg("8-bit font support disabled: %d\n", ch); + return NULL; +#endif + } + else + { + /* Someday, perhaps 16-bit fonts will go here */ + + gdbg("16-bit font not currently supported\n"); + return NULL; + } + + /* Then verify that the character actually resides in the font */ + + if (ch >= fontset->first && ch < fontset->first +fontset->nchars) + { + return fontset; + } + + gdbg("No bitmap for code %02x\n", ch); + return NULL; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxf_getfonthandle + * + * Description: + * Given a numeric font ID, return a handle that may be subsequently be + * used to access the font data sets. + * + * Input Parameters: + * fontid: Identifies the font set to get + * + ****************************************************************************/ + +NXHANDLE nxf_getfonthandle(enum nx_fontid_e fontid) +{ + FAR const struct nx_fontpackage_s **pkglist; + FAR const struct nx_fontpackage_s *package; + FAR const struct nx_fontpackage_s *defpkg = NULL; + + /* Handle the default font package */ + + if (fontid == FONTID_DEFAULT) + { + fontid = NXFONT_DEFAULT; + } + + /* Then search for the font package with this ID */ + + for (pkglist = g_fontpackages; *pkglist; pkglist++) + { + /* Is this the package with the matching font ID? */ + + package = *pkglist; + if (package->id == fontid) + { + /* Yes.. return a pointer to the package as the handle */ + + return (NXHANDLE)package; + } + + /* No.. is it the default font? */ + + else if (package->id == NXFONT_DEFAULT) + { + /* Yes.. save the pointer to the default font. We will return the + * default font if the requested font cannot be found. + */ + + defpkg = package; + } + } + + /* Return a pointer to the default font as the handle. */ + + return (NXHANDLE)defpkg; +} + +/**************************************************************************** + * Name: nxf_getfontset + * + * Description: + * Return information about the current font set + * + * Input Parameters: + * handle: A font handle previously returned by nxf_getfonthandle + * + ****************************************************************************/ + +FAR const struct nx_font_s *nxf_getfontset(NXHANDLE handle) +{ + FAR const struct nx_fontpackage_s *package = + (FAR const struct nx_fontpackage_s *)handle; + + /* Find the font package associated with this font ID */ + + if (package) + { + /* Found... return the font set metrics for this font package */ + + return &package->metrics; + } + + return NULL; +} + +/**************************************************************************** + * Name: nxf_getbitmap + * + * Description: + * Return font bitmap information for the selected character encoding. + * + * Input Parameters: + * handle: A font handle previously returned by nxf_getfonthandle + * ch: Character code whose bitmap is requested + * + * Returned Value: + * An instance of struct nx_fontbitmap_s describing the glyph. + * + ****************************************************************************/ + +FAR const struct nx_fontbitmap_s *nxf_getbitmap(NXHANDLE handle, uint16_t ch) +{ + FAR const struct nx_fontpackage_s *package = + (FAR const struct nx_fontpackage_s *)handle; + FAR const struct nx_fontset_s *fontset; + FAR const struct nx_fontbitmap_s *bm = NULL; + + /* Verify that the handle is a font package */ + + if (package) + { + /* Now get the fontset from the package */ + + fontset = nxf_getglyphset(ch, package); + if (fontset) + { + /* Then get the bitmap from the font set */ + + bm = &fontset->bitmap[ch - fontset->first]; + } + } + + return bm; +} |