678 lines
21 KiB
C
678 lines
21 KiB
C
/****************************************************************************
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* include/nuttx/nx/nxfonts.h
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*
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* Copyright (C) 2008, 2009, 2011, 2015, 2017 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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/* Font Definitions *********************************************************/
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/* Select the default font. If no fonts are selected, then a compilation
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* error 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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/* Pixel fonts */
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#elif defined(CONFIG_NXFONT_PIXEL_UNICODE)
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# define NXFONT_DEFAULT FONTID_PIXEL_UNICODE
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#elif defined(CONFIG_NXFONT_PIXEL_LCD_MACHINE)
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# define NXFONT_DEFAULT FONTID_PIXEL_LCD_MACHINE
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/* X11 misc fixed fonts */
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_4X6)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_4X6
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_5X7)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_5X7
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_5X8)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_5X8
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_6X9)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_6X9
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_6X10)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_6X10
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_6X12)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_6X12
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_6X13)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_6X13
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_6X13B)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_6X13B
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_6X13O)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_6X13O
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_7X13)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_7X13
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_7X13B)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_7X13B
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_7X13O)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_7X13O
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_7X14)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_7X14
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_7X14B)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_7X14B
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_8X13)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_8X13
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_8X13B)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_8X13B
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_8X13O)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_8X13O
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_9X15)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_9X15
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_9X15B)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_9X15B
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_9X18)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_9X18
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_9X18B)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_9X18B
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#elif defined(CONFIG_NXFONT_X11_MISC_FIXED_10X20)
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# define NXFONT_DEFAULT FONTID_X11_MISC_FIXED_10X20
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/* Mono-space fonts */
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#elif defined(CONFIG_NXFONT_MONO5X8)
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# define NXFONT_DEFAULT FONTID_MONO5X8
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/* Tom Thumb mono-space 4x6 font */
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#elif defined(CONFIG_NXFONT_TOM_THUMB_4X6)
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# define NXFONT_DEFAULT FONTID_TOM_THUMB_4X6
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* Font Types ***************************************************************/
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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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/* Monospace fonts */
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#ifdef CONFIG_NXFONT_MONO5X8
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, FONTID_MONO5X8 = 18 /* The 5x8 monospace font */
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#endif
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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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/* Pixel fonts */
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#ifdef CONFIG_NXFONT_PIXEL_UNICODE
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, FONTID_PIXEL_UNICODE = 19 /* Pixel UniCode font */
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#endif
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#ifdef CONFIG_NXFONT_PIXEL_LCD_MACHINE
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, FONTID_PIXEL_LCD_MACHINE = 20 /* Pixel lcd machine font */
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#endif
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/* X11 misc fixed fonts */
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_4X6
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, FONTID_X11_MISC_FIXED_4X6 = 21 /* X11 misc fixed 4x6 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_5X7
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, FONTID_X11_MISC_FIXED_5X7 = 22 /* X11 misc fixed 5x7 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_5X8
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, FONTID_X11_MISC_FIXED_5X8 = 23 /* X11 misc fixed 5x8 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_6X9
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, FONTID_X11_MISC_FIXED_6X9 = 24 /* X11 misc fixed 6x9 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_6X10
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, FONTID_X11_MISC_FIXED_6X10 = 25 /* X11 misc fixed 6x10 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_6X12
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, FONTID_X11_MISC_FIXED_6X12 = 26 /* X11 misc fixed 6x12 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_6X13
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, FONTID_X11_MISC_FIXED_6X13 = 27 /* X11 misc fixed 6x13 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_6X13B
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, FONTID_X11_MISC_FIXED_6X13B = 28 /* X11 misc fixed 6x13b */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_6X13O
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, FONTID_X11_MISC_FIXED_6X13O = 29 /* X11 misc fixed 6x13o */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_7X13
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, FONTID_X11_MISC_FIXED_7X13 = 30 /* X11 misc fixed 7x13 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_7X13B
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, FONTID_X11_MISC_FIXED_7X13B = 31 /* X11 misc fixed 7x13b */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_7X13O
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, FONTID_X11_MISC_FIXED_7X13O = 32 /* X11 misc fixed 7x13o */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_7X14
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, FONTID_X11_MISC_FIXED_7X14 = 33 /* X11 misc fixed 7x14 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_7X14B
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, FONTID_X11_MISC_FIXED_7X14B = 34 /* X11 misc fixed 7x14b */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_8X13
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, FONTID_X11_MISC_FIXED_8X13 = 35 /* X11 misc fixed 8x13 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_8X13B
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, FONTID_X11_MISC_FIXED_8X13B = 36 /* X11 misc fixed 8x13b */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_8X13O
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, FONTID_X11_MISC_FIXED_8X13O = 37 /* X11 misc fixed 8x13o */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_9X15
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, FONTID_X11_MISC_FIXED_9X15 = 38 /* X11 misc fixed 9x15 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_9X15B
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, FONTID_X11_MISC_FIXED_9X15B = 39 /* X11 misc fixed 9x15b */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_9X18
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, FONTID_X11_MISC_FIXED_9X18 = 40 /* X11 misc fixed 9x18 */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_9X18B
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, FONTID_X11_MISC_FIXED_9X18B = 41 /* X11 misc fixed 9x18b */
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#endif
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#ifdef CONFIG_NXFONT_X11_MISC_FIXED_10X20
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, FONTID_X11_MISC_FIXED_10X20 = 42 /* X11 misc fixed 10x20 */
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#endif
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#ifdef CONFIG_NXFONT_TOM_THUMB_4X6
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, FONTID_TOM_THUMB_4X6 = 43 /* Tom Thumb monospace 4x6 */
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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 */
|
|
#endif
|
|
};
|
|
|
|
/* Font Cache ***************************************************************/
|
|
/* Opaque handle used to reference a font cache */
|
|
|
|
typedef FAR void *FCACHE;
|
|
|
|
/* Describes one cached font glyph */
|
|
|
|
struct nxfonts_glyph_s
|
|
{
|
|
FAR struct nxfonts_glyph_s *flink; /* Implements a singly linked list */
|
|
uint8_t code; /* Character code */
|
|
uint8_t height; /* Height of this glyph (in rows) */
|
|
uint8_t width; /* Width of this glyph (in pixels) */
|
|
uint8_t stride; /* Width of the glyph row (in bytes) */
|
|
FAR uint8_t bitmap[1]; /* Bitmap memory, actual size varies */
|
|
};
|
|
|
|
#define SIZEOF_NXFONTS_GLYPH_S(b) (sizeof(struct nxfonts_glyph_s) + (b) - 1)
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
#undef EXTERN
|
|
#if defined(__cplusplus)
|
|
# define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
# define EXTERN extern
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* 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
|
|
*
|
|
* Returned Value:
|
|
* One success, a non-NULL font handle is returned.
|
|
*
|
|
****************************************************************************/
|
|
|
|
NXHANDLE nxf_getfonthandle(enum nx_fontid_e fontid);
|
|
|
|
/****************************************************************************
|
|
* 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);
|
|
|
|
/****************************************************************************
|
|
* 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);
|
|
|
|
/****************************************************************************
|
|
* Name: nxf_convert_*bpp
|
|
*
|
|
* Description:
|
|
* Convert the 1BPP font to a new pixel depth
|
|
*
|
|
* Input Parameters:
|
|
* dest - The destination buffer provided by the caller.
|
|
* height - The max height of the returned char in rows
|
|
* width - The max width of the returned char in pixels
|
|
* stride - The width of the destination buffer in bytes
|
|
* bm - Describes the character glyph to convert
|
|
* color - The color to use for '1' bits in the font bitmap
|
|
* (0 bits are transparent)
|
|
*
|
|
* Returned Value:
|
|
* OK on Success, ERROR: on failure with errno set appropriately.
|
|
* (never fails)
|
|
*
|
|
****************************************************************************/
|
|
|
|
int nxf_convert_1bpp(FAR uint8_t *dest, uint16_t height,
|
|
uint16_t width, uint16_t stride,
|
|
FAR const struct nx_fontbitmap_s *bm,
|
|
nxgl_mxpixel_t color);
|
|
int nxf_convert_2bpp(FAR uint8_t *dest, uint16_t height,
|
|
uint16_t width, uint16_t stride,
|
|
FAR const struct nx_fontbitmap_s *bm,
|
|
nxgl_mxpixel_t color);
|
|
int nxf_convert_4bpp(FAR uint8_t *dest, uint16_t height,
|
|
uint16_t width, uint16_t stride,
|
|
FAR const struct nx_fontbitmap_s *bm,
|
|
nxgl_mxpixel_t color);
|
|
int nxf_convert_8bpp(FAR uint8_t *dest, uint16_t height,
|
|
uint16_t width, uint16_t stride,
|
|
FAR const struct nx_fontbitmap_s *bm,
|
|
nxgl_mxpixel_t color);
|
|
int nxf_convert_16bpp(FAR uint16_t *dest, uint16_t height,
|
|
uint16_t width, uint16_t stride,
|
|
FAR const struct nx_fontbitmap_s *bm,
|
|
nxgl_mxpixel_t color);
|
|
int nxf_convert_24bpp(FAR uint32_t *dest, uint16_t height,
|
|
uint16_t width, uint16_t stride,
|
|
FAR const struct nx_fontbitmap_s *bm,
|
|
nxgl_mxpixel_t color);
|
|
int nxf_convert_32bpp(FAR uint32_t *dest, uint16_t height,
|
|
uint16_t width, uint16_t stride,
|
|
FAR const struct nx_fontbitmap_s *bm,
|
|
nxgl_mxpixel_t color);
|
|
|
|
/****************************************************************************
|
|
* Name: nxf_cache_connect
|
|
*
|
|
* Description:
|
|
* Create a new font cache for the provided 'fontid'. If the cache
|
|
* already, then just increment a reference count return the handle for
|
|
* the existing font cache.
|
|
*
|
|
* Input Parameters:
|
|
* fontid - Identifies the font supported by this cache
|
|
* fgcolor - Foreground color
|
|
* bgcolor - Background color
|
|
* bpp - Bits per pixel
|
|
* maxglyphs - Maximum number of glyphs permitted in the cache
|
|
*
|
|
* Returned Value:
|
|
* On success a non-NULL handle is returned that then may sequently be
|
|
* used with nxf_getglyph() to extract fonts from the font cache. NULL
|
|
* returned on any failure with the errno value set to indicate the nature
|
|
* of the error.
|
|
*
|
|
****************************************************************************/
|
|
|
|
FCACHE nxf_cache_connect(enum nx_fontid_e fontid,
|
|
nxgl_mxpixel_t fgcolor, nxgl_mxpixel_t bgcolor,
|
|
int bpp, int maxglyph);
|
|
|
|
/****************************************************************************
|
|
* Name: nxf_cache_disconnect
|
|
*
|
|
* Description:
|
|
* Decrement the reference count on the font cache and, if the reference
|
|
* count goes to zero, free all resources used by the font cache. The
|
|
* font handler is invalid upon return in either case.
|
|
*
|
|
* Input Parameters:
|
|
* fhandle - A font cache handler previously returned by nxf_cache_connect();
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
****************************************************************************/
|
|
|
|
void nxf_cache_disconnect(FCACHE fhandle);
|
|
|
|
/****************************************************************************
|
|
* Name: nxf_cache_getfonthandle
|
|
*
|
|
* Description:
|
|
* Return the handle to the font set used by this instance of the font
|
|
* cache.
|
|
*
|
|
* Input Parameters:
|
|
* fhandle - A font cache handle previously returned by nxf_cache_connect();
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) is returned if the metrics were
|
|
*
|
|
* Returned Value:
|
|
* One success, a non-NULL font handle is returned.
|
|
*
|
|
****************************************************************************/
|
|
|
|
NXHANDLE nxf_cache_getfonthandle(FCACHE fhandle);
|
|
|
|
/****************************************************************************
|
|
* Name: nxf_cache_getglyph
|
|
*
|
|
* Description:
|
|
* Get the font glyph for the character code 'ch' from the font cache. If
|
|
* the glyph for that character code does not exist in the font cache, it
|
|
* be rendered.
|
|
*
|
|
* Returned Value:
|
|
* On success, a non-NULL pointer to the rendered glyph in the font cache
|
|
* is returned. NULL is returned on any failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
FAR const struct nxfonts_glyph_s *nxf_cache_getglyph(FCACHE fhandle, uint8_t ch);
|
|
|
|
#undef EXTERN
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif /* __INCLUDE_NUTTX_NX_NXFONTS_H */
|