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411 lines
10 KiB
411 lines
10 KiB
/**************************************************************************** |
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* graphics/nxfonts/nxfonts_getfont.c |
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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 <spudmonkey@racsa.co.cr> |
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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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/**************************************************************************** |
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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 <stddef.h> |
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#include <debug.h> |
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#include <nuttx/nx/nx.h> |
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#include <nuttx/nx/nxfonts.h> |
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#include "nxfonts_internal.h" |
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/**************************************************************************** |
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* Pre-Processor Definitions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Types |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Data |
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****************************************************************************/ |
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/* SANS */ |
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#ifdef CONFIG_NXFONT_SANS17X22 |
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extern const struct nx_fontpackage_s g_sans17x22_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SANS20X26 |
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extern const struct nx_fontpackage_s g_sans20x26_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SANS23X27 |
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extern const struct nx_fontpackage_s g_sans23x27_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SANS22X29 |
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extern const struct nx_fontpackage_s g_sans22x29_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SANS28X37 |
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extern const struct nx_fontpackage_s g_sans28x37_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SANS39X48 |
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extern const struct nx_fontpackage_s g_sans39x48_package; |
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#endif |
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/* SANS-BOLD */ |
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#ifdef CONFIG_NXFONT_SANS17X23B |
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extern const struct nx_fontpackage_s g_sans17x23b_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SANS20X27B |
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extern const struct nx_fontpackage_s g_sans20x27b_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SANS22X29B |
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extern const struct nx_fontpackage_s g_sans22x29b_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SANS28X37B |
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extern const struct nx_fontpackage_s g_sans28x37b_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SANS40X49B |
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extern const struct nx_fontpackage_s g_sans40x49b_package; |
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#endif |
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/* SERIF */ |
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#ifdef CONFIG_NXFONT_SERIF22X29 |
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extern const struct nx_fontpackage_s g_serif22x29_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SERIF29X37 |
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extern const struct nx_fontpackage_s g_serif29x37_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SERIF38X48 |
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extern const struct nx_fontpackage_s g_serif38x48_package; |
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#endif |
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/* SERIF-BOLD */ |
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#ifdef CONFIG_NXFONT_SERIF22X28B |
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extern const struct nx_fontpackage_s g_serif22x28b_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SERIF27X38B |
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extern const struct nx_fontpackage_s g_serif27x38b_package; |
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#endif |
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#ifdef CONFIG_NXFONT_SERIF38X49 |
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extern const struct nx_fontpackage_s g_serif38x49b_package; |
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#endif |
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static FAR const struct nx_fontpackage_s *g_fontpackages[] = |
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{ |
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/* SANS */ |
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#ifdef CONFIG_NXFONT_SANS17X22 |
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&g_sans17x22_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SANS20X26 |
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&g_sans20x26_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SANS23X27 |
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&g_sans23x27_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SANS22X29 |
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&g_sans22x29_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SANS28X37 |
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&g_sans28x37_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SANS39X48 |
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&g_sans39x48_package, |
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#endif |
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/* SANS-BOLD */ |
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#ifdef CONFIG_NXFONT_SANS17X23B |
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&g_sans17x23b_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SANS20X27B |
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&g_sans20x27b_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SANS22X29B |
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&g_sans22x29b_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SANS28X37B |
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&g_sans28x37b_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SANS40X49B |
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&g_sans40x49b_package, |
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#endif |
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/* SERIF */ |
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#ifdef CONFIG_NXFONT_SERIF22X29 |
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&g_serif22x29_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SERIF29X37 |
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&g_serif29x37_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SERIF38X48 |
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&g_serif38x48_package, |
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#endif |
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/* SERIF-BOLD */ |
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#ifdef CONFIG_NXFONT_SERIF22X28B |
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&g_serif22x28b_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SERIF27X38B |
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&g_serif27x38b_package, |
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#endif |
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#ifdef CONFIG_NXFONT_SERIF38X49B |
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&g_serif38x49b_package, |
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#endif |
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NULL |
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}; |
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/**************************************************************************** |
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* Public Data |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Name: nxf_getglyphset |
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* |
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* Description: |
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* Return information about the font set containtined he selected |
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* character encoding. |
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* |
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* Input Parameters: |
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* ch: character code |
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* package: The selected font package |
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* |
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****************************************************************************/ |
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static inline FAR const struct nx_fontset_s * |
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nxf_getglyphset(uint16_t ch, FAR const struct nx_fontpackage_s *package) |
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{ |
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FAR const struct nx_fontset_s *fontset; |
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/* Select the 7- or 8-bit font set */ |
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if (ch < 128) |
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{ |
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/* Select the 7-bit font set */ |
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fontset = &package->font7; |
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} |
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else if (ch < 256) |
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{ |
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#if CONFIG_NXFONTS_CHARBITS >= 8 |
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/* Select the 8-bit font set */ |
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fontset = &package->font8; |
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#else |
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gdbg("8-bit font support disabled: %d\n", ch); |
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return NULL; |
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#endif |
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} |
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else |
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{ |
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/* Someday, perhaps 16-bit fonts will go here */ |
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gdbg("16-bit font not currently supported\n"); |
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return NULL; |
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} |
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/* Then verify that the character actually resides in the font */ |
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if (ch >= fontset->first && ch < fontset->first +fontset->nchars) |
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{ |
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return fontset; |
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} |
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gdbg("No bitmap for code %02x\n", ch); |
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return NULL; |
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} |
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/**************************************************************************** |
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* Public Functions |
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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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NXHANDLE nxf_getfonthandle(enum nx_fontid_e fontid) |
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{ |
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FAR const struct nx_fontpackage_s **pkglist; |
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FAR const struct nx_fontpackage_s *package; |
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FAR const struct nx_fontpackage_s *defpkg = NULL; |
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/* Handle the default font package */ |
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if (fontid == FONTID_DEFAULT) |
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{ |
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fontid = NXFONT_DEFAULT; |
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} |
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/* Then search for the font package with this ID */ |
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for (pkglist = g_fontpackages; *pkglist; pkglist++) |
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{ |
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/* Is this the package with the matching font ID? */ |
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package = *pkglist; |
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if (package->id == fontid) |
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{ |
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/* Yes.. return a pointer to the package as the handle */ |
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return (NXHANDLE)package; |
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} |
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/* No.. is it the default font? */ |
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else if (package->id == NXFONT_DEFAULT) |
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{ |
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/* Yes.. save the pointer to the default font. We will return the |
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* default font if the requested font cannot be found. |
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*/ |
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defpkg = package; |
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} |
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} |
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/* Return a pointer to the default font as the handle. */ |
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return (NXHANDLE)defpkg; |
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} |
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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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FAR const struct nx_font_s *nxf_getfontset(NXHANDLE handle) |
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{ |
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FAR const struct nx_fontpackage_s *package = |
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(FAR const struct nx_fontpackage_s *)handle; |
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/* Find the font package associated with this font ID */ |
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if (package) |
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{ |
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/* Found... return the font set metrics for this font package */ |
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return &package->metrics; |
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} |
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return NULL; |
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} |
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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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FAR const struct nx_fontbitmap_s *nxf_getbitmap(NXHANDLE handle, uint16_t ch) |
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{ |
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FAR const struct nx_fontpackage_s *package = |
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(FAR const struct nx_fontpackage_s *)handle; |
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FAR const struct nx_fontset_s *fontset; |
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FAR const struct nx_fontbitmap_s *bm = NULL; |
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/* Verify that the handle is a font package */ |
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if (package) |
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{ |
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/* Now get the fontset from the package */ |
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fontset = nxf_getglyphset(ch, package); |
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if (fontset) |
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{ |
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/* Then get the bitmap from the font set */ |
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bm = &fontset->bitmap[ch - fontset->first]; |
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} |
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} |
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return bm; |
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}
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