149 lines
4.9 KiB
C
149 lines
4.9 KiB
C
/****************************************************************************
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* graphics/nxfonts/nxfonts_getfont.h
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*
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* Copyright (C) 2008-2009 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/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 Data
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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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*
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****************************************************************************/
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static inline FAR const struct nx_fontset_s *nxf_getglyphset(uint16_t ch)
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{
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if (ch < 128)
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{
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if (ch >= g_7bitfonts.first && ch < g_7bitfonts.first + g_7bitfonts.nchars)
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{
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return &g_7bitfonts;
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}
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gdbg("No bitmap for 7-bit code %d\n", ch);
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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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if (ch >= g_8bitfonts.first && ch < g_8bitfonts.first + g_8bitfonts.nchars)
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{
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return &g_8bitfonts;
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}
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gdbg("No bitmap for 8-bit code %d\n", ch);
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#else
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gdbg("8-bit font support disabled: %d\n", ch);
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#endif
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}
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else
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{
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gdbg("16-bit font not currently supported\n");
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}
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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_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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* None
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*
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****************************************************************************/
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FAR const struct nx_font_s *nxf_getfontset(void)
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{
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return &g_fonts;
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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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* ch - character code
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*
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****************************************************************************/
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FAR const struct nx_fontbitmap_s *nxf_getbitmap(uint16_t ch)
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{
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FAR const struct nx_fontset_s *set = nxf_getglyphset(ch);
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FAR const struct nx_fontbitmap_s *bm = NULL;
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if (set)
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{
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bm = &set->bitmap[ch - set->first];
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}
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return bm;
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}
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