/**************************************************************************** * graphics/nxfonts/nxfonts_getfont.c * * Copyright (C) 2008-2009, 2011 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #include #include #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; }