151 lines
4.2 KiB
C
151 lines
4.2 KiB
C
/****************************************************************************
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* apps/examples/pdcurses/charset_main.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Adapted by: 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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "graphics/curses.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define FIRST_CH 0x20
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#define LAST_CH 0x7e
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#define NUM_CH (LAST_CH - FIRST_CH + 1)
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static short color_table[] =
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{
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COLOR_RED, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN,
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COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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chtype ch;
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int lastch;
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int width;
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int height;
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int xoffset;
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int yoffset;
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int row;
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int col;
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int i;
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#ifdef CONFIG_PDCURSES_MULTITHREAD
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FAR struct pdc_context_s *ctx = PDC_ctx();
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#endif
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/* Initialize */
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traceon();
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initscr();
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noecho();
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/* Setup colors */
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if (has_colors())
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{
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start_color();
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}
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for (i = 0; i < 8; i++)
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{
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init_pair(i, color_table[i], COLOR_BLACK);
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}
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/* Set up geometry */
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/* First get the maximum width */
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width = COLS - 2;
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if (width > NUM_CH)
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{
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width = NUM_CH;
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}
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/* Get the height associated with the maximum width */
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height = (NUM_CH + width - 1) / width;
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lastch = LAST_CH;
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if (height > LINES)
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{
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height = LINES;
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lastch = FIRST_CH + width * height - 1;
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}
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/* Reduce the width if it will give us a more balanced layout */
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while (height < (LINES / 2) && width > (COLS / 2))
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{
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int numch = lastch - FIRST_CH + 1;
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width >>= 1;
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height = (numch + width - 1) / width;
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}
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/* Center the rectangle containing the font set */
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xoffset = (COLS - width) / 2;
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yoffset = (LINES - height) / 2;
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/* Now display the character set using that geometry */
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ch = FIRST_CH;
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for (row = yoffset; row < yoffset + height; row++)
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{
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for (col = xoffset; col < xoffset + width; col++)
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{
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mvaddch(row, col, ch);
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if (++ch > lastch)
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{
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break;
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}
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}
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}
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refresh();
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endwin();
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return 0;
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}
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