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nuttx-apps/graphics/pdcurs34/nuttx/pdcscrn.c

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/****************************************************************************
* apps/graphics/nuttx/pdcscrn.c
*
* Copyright (C) 2017 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <nuttx/config.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <stdlib.h>
#include <fcntl.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <graphics/curses.h>
#include "pdcnuttx.h"
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef CONFIG_SYSTEM_TERMCURSES
#ifndef CONFIG_PDCURSES_MULTITHREAD
bool graphic_screen = false;
#endif
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: PDC_scr_free_term
*
* Description:
* Frees the memory for SP allocated by PDC_scr_open(). Called by
* delscreen().
*
****************************************************************************/
#ifdef CONFIG_SYSTEM_TERMCURSES
static void PDC_scr_free_term(FAR SCREEN *sp)
{
FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
FAR struct pdc_termstate_s *termstate = &termscreen->termstate;
/* Deinitialize termcurses */
termcurses_deinitterm(termstate->tcurs);
/* Free the memory */
free(termscreen);
#ifdef CONFIG_PDCURSES_MULTITHREAD
PDC_ctx_free();
#endif
}
#endif
/****************************************************************************
* Name: PDC_scr_open_term
*
* Description:
* The platform-specific part of initscr(). It's actually called from
* Xinitscr(); the arguments, if present, correspond to those used with
* main(), and may be used to set the title of the terminal window, or for
* other, platform-specific purposes. This opens a terminal type screen
* backed by the NuttX termcurses interface.) PDC_scr_open() must allocate
* memory for SP, and must initialize acs_map[] (unless it's preset) and
* several members of SP, * including lines, cols, mouse_wait, orig_attr
* (and if orig_attr is true, orig_fore and orig_back), mono, _restore and
* _preserve.
*
****************************************************************************/
#ifdef CONFIG_SYSTEM_TERMCURSES
static int PDC_scr_open_term(int argc, char **argv)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
int ret;
int i;
struct winsize winsz;
FAR struct pdc_termscreen_s *termscreen;
FAR struct pdc_termstate_s *termstate;
FAR char *term_type;
/* Determine the terminal type */
if (argc > 1)
{
term_type = argv[1];
}
else
{
term_type = NULL;
}
/* Allocate the SP */
termscreen = (FAR struct pdc_termscreen_s *)
zalloc(sizeof(struct pdc_termscreen_s));
if (termscreen == NULL)
{
PDC_LOG(("ERROR: Failed to allocate SP\n"));
return ERR;
}
termstate = &termscreen->termstate;
/* Try to initialize termcurses on stdout */
ret = termcurses_initterm(term_type, 0, 1, &termstate->tcurs);
if (ret != OK)
{
PDC_LOG(("ERROR: Failed to initialize termcurses based SP\n"));
free(termscreen);
return ERR;
}
/* Try to get the terminal size in rows / cols */
ret = termcurses_getwinsize(termstate->tcurs, &winsz);
if (ret != OK)
{
PDC_LOG(("ERROR: Terminal termcurses driver doesn't support size reporting\n"));
free(termscreen);
return ERR;
}
graphic_screen = false;
SP = &termscreen->screen;
SP->lines = winsz.ws_row;
SP->cols = winsz.ws_col;
termscreen->termstate.out_fd = 1;
termscreen->termstate.in_fd = 0;
termscreen->termstate.fg_red = 0xFFFE;
termscreen->termstate.bg_red = 0xFFFE;
termstate = &termscreen->termstate;
/* Setup initial RGB colors */
for (i = 0; i < 8; i++)
{
#ifdef PDCURSES_MONOCHROME
uint8_t greylevel;
greylevel = (i & COLOR_RED) ? 0x40 : 0;
greylevel += (i & COLOR_GREEN) ? 0x40 : 0;
greylevel += (i & COLOR_BLUE) ? 0x40 : 0;
termstate->greylevel[i] = greylevel;
termstate->greylevel[i+8] = greylevel | 0x3f;
#else
termstate->rgbcolor[i].red = (i & COLOR_RED) ? 0xc0 : 0;
termstate->rgbcolor[i].green = (i & COLOR_GREEN) ? 0xc0 : 0;
termstate->rgbcolor[i].blue = (i & COLOR_BLUE) ? 0xc0 : 0;
termstate->rgbcolor[i + 8].red = (i & COLOR_RED) ? 0xff : 0x40;
termstate->rgbcolor[i + 8].green = (i & COLOR_GREEN) ? 0xff : 0x40;
termstate->rgbcolor[i + 8].blue = (i & COLOR_BLUE) ? 0xff : 0x40;
#endif
}
COLORS = 16;
#ifdef CONFIG_PDCURSES_HAVE_INPUT
ret = PDC_input_open(NULL);
if (ret != OK)
{
/* Free the memory ... can't open input */
PDC_ctx_free();
free(termscreen);
}
#endif
return ret;
}
#endif /* CONFIG_SYSTEM_TERMCURSES */
/****************************************************************************
* Name: PDC_init_pair_term
*
* Description:
* The core of init_pair(). This does all the work of that function, except
* checking for values out of range. The values passed to this function
* should be returned by a call to PDC_pair_content() with the same pair
* number. PDC_transform_line() should use the specified colors when
* rendering a chtype with the given pair number.
*
****************************************************************************/
#ifdef CONFIG_SYSTEM_TERMCURSES
static void PDC_init_pair_term(FAR SCREEN *sp, short pair, short fg, short bg)
{
FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
termscreen->termstate.colorpair[pair].fg = fg;
termscreen->termstate.colorpair[pair].bg = bg;
}
#endif /* CONFIG_SYSTEM_TERMCURSES */
/****************************************************************************
* Name: PDC_init_color
*
* Description:
* The core of init_color(). This does all the work of that function,
* except checking for values out of range.
*
****************************************************************************/
#ifdef CONFIG_SYSTEM_TERMCURSES
int PDC_init_color_term(FAR SCREEN *sp, short color, short red, short green,
short blue)
{
FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
FAR struct pdc_termstate_s *termstate;
DEBUGASSERT(termscreen != NULL);
termstate = &termscreen->termstate;
#ifdef PDCURSES_MONOCHROME
greylevel = (DIVROUND(red * 255, 1000) +
DIVROUND(green * 255, 1000) +
DIVROUND(blue * 255, 1000)) / 3;
termstate->greylevel[color] = (uint8_t)greylevel;
#else
termstate->rgbcolor[color].red = DIVROUND(red * 255, 1000);
termstate->rgbcolor[color].green = DIVROUND(green * 255, 1000);
termstate->rgbcolor[color].blue = DIVROUND(blue * 255, 1000);
#endif
return OK;
}
#endif /* CONFIG_SYSTEM_TERMCURSES */
/****************************************************************************
* Name: PDC_color_content_term
*
* Description:
* The core of color_content(). This does all the work of that function,
* except checking for values out of range and null pointers.
*
****************************************************************************/
#ifdef CONFIG_SYSTEM_TERMCURSES
int PDC_color_content_term(FAR SCREEN *sp, short color,
FAR short *red, FAR short *green, FAR short *blue)
{
FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
FAR struct pdc_termstate_s *termstate;
DEBUGASSERT(termscreen != NULL);
termstate = &termscreen->termstate;
#ifdef PDCURSES_MONOCHROME
greylevel = DIVROUND(termstate->greylevel[color] * 1000, 255);
*red = greylevel;
*green = greylevel;
*blue = greylevel;
#else
*red = DIVROUND(termstate->rgbcolor[color].red * 1000, 255);
*green = DIVROUND(termstate->rgbcolor[color].green * 1000, 255);
*blue = DIVROUND(termstate->rgbcolor[color].blue * 1000, 255);
#endif
return OK;
}
#endif /* CONFIG_SYSTEM_TERMCURSES */
/****************************************************************************
* Name: PDC_pair_content_term
*
* Description:
* The core of pair_content(). This does all the work of that function,
* except checking for values out of range and null pointers.
*
****************************************************************************/
#ifdef CONFIG_SYSTEM_TERMCURSES
static int PDC_pair_content_term(FAR SCREEN *sp, short pair, short *fg, short *bg)
{
FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
*fg = termscreen->termstate.colorpair[pair].fg;
*bg = termscreen->termstate.colorpair[pair].bg;
return OK;
}
#endif /* CONFIG_SYSTEM_TERMCURSES */
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: PDC_scr_close
*
* Description:
* The platform-specific part of endwin(). It may restore the image of the
* original screen saved by PDC_scr_open(), if the PDC_RESTORE_SCREEN
* environment variable is set; either way, if using an existing terminal,
* this function should restore it to the mode it had at startup, and move
* the cursor to the lower left corner. (The X11 port does nothing.)
*
****************************************************************************/
void PDC_scr_close(void)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
PDC_LOG(("PDC_scr_close() - called\n"));
/* Ensure cursor is visible */
curs_set(1);
attrset(COLOR_PAIR(0));
/* Delete the screen */
delscreen(SP);
}
/****************************************************************************
* Name: PDC_scr_free
*
* Description:
* Frees the memory for SP allocated by PDC_scr_open(). Called by
* delscreen().
*
****************************************************************************/
void PDC_scr_free(void)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
FAR struct pdc_fbscreen_s *fbscreen = (FAR struct pdc_fbscreen_s *)SP;
FAR struct pdc_fbstate_s *fbstate;
#ifdef CONFIG_SYSTEM_TERMCURSES
if (!graphic_screen)
{
PDC_scr_free_term(SP);
return;
}
#endif
DEBUGASSERT(fbscreen != NULL);
fbstate = &fbscreen->fbstate;
close(fbstate->fbfd);
#ifdef CONFIG_PDCURSES_HAVE_INPUT
PDC_input_close(fbstate);
#endif
free(fbscreen);
SP = NULL;
#ifdef CONFIG_PDCURSES_MULTITHREAD
PDC_ctx_free();
#endif
}
/****************************************************************************
* Name: PDC_scr_open
*
* Description:
* The platform-specific part of initscr(). It's actually called from
* Xinitscr(); the arguments, if present, correspond to those used with
* main(), and may be used to set the title of the terminal window, or for
* other, platform-specific purposes. (The arguments are currently used
* only in X11.) PDC_scr_open() must allocate memory for SP, and must
* initialize acs_map[] (unless it's preset) and several members of SP,
* including lines, cols, mouse_wait, orig_attr (and if orig_attr is true,
* orig_fore and orig_back), mono, _restore and _preserve. (Although SP is
* used the same way in all ports, it's allocated here in order to allow
* the X11 port to map it to a block of shared memory.) If using an
* existing terminal, and the environment variable PDC_RESTORE_SCREEN is
* set, this function may also store the existing screen image for later
* restoration by PDC_scr_close().
*
****************************************************************************/
int PDC_scr_open(int argc, char **argv)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
#ifdef CONFIG_SYSTEM_TERMCURSES
FAR char *env_display;
#endif
FAR struct pdc_fbscreen_s *fbscreen;
FAR const struct nx_font_s *fontset;
FAR struct pdc_fbstate_s *fbstate;
struct fb_videoinfo_s vinfo;
struct fb_planeinfo_s pinfo;
int ret;
int i;
PDC_LOG(("PDC_scr_open() - called\n"));
#ifdef CONFIG_SYSTEM_TERMCURSES
/* When termcurses is compiled in, we must allow opening terminal
* type screens also. Check if the DISPLAY environment variable is
* set to ":0" indicating we should open the graphic screen.
*/
env_display = getenv("DISPLAY");
if (!env_display || strcmp(env_display, ":0") != 0)
{
/* Perform terminal open operation */
return PDC_scr_open_term(argc, argv);
}
#endif
/* Allocate the global instance of SP */
fbscreen = (FAR struct pdc_fbscreen_s *)zalloc(sizeof(struct pdc_fbscreen_s));
if (fbscreen == NULL)
{
PDC_LOG(("ERROR: Failed to allocate SP\n"));
return ERR;
}
SP = &fbscreen->screen;
fbstate = &fbscreen->fbstate;
#ifdef CONFIG_SYSTEM_TERMCURSES
graphic_screen = true;
#endif
/* Number of RGB colors/greyscale levels. This is the same as the
* dimension of rgbcolor[] or greylevel[]).
*/
COLORS = 16;
/* Setup initial RGB colors */
for (i = 0; i < 8; i++)
{
#ifdef PDCURSES_MONOCHROME
uint8_t greylevel;
greylevel = (i & COLOR_RED) ? 0x40 : 0;
greylevel += (i & COLOR_GREEN) ? 0x40 : 0;
greylevel += (i & COLOR_BLUE) ? 0x40 : 0;
fbstate->greylevel[i] = greylevel;
fbstate->greylevel[i+8] = greylevel | 0x3f;
#else
fbstate->rgbcolor[i].red = (i & COLOR_RED) ? 0xc0 : 0;
fbstate->rgbcolor[i].green = (i & COLOR_GREEN) ? 0xc0 : 0;
fbstate->rgbcolor[i].blue = (i & COLOR_BLUE) ? 0xc0 : 0;
fbstate->rgbcolor[i + 8].red = (i & COLOR_RED) ? 0xff : 0x40;
fbstate->rgbcolor[i + 8].green = (i & COLOR_GREEN) ? 0xff : 0x40;
fbstate->rgbcolor[i + 8].blue = (i & COLOR_BLUE) ? 0xff : 0x40;
#endif
}
/* Open the framebuffer driver */
fbstate->fbfd = open(CONFIG_PDCURSES_FBDEV, O_RDWR);
if (fbstate->fbfd < 0)
{
PDC_LOG(("ERROR: Failed to open %s: %d\n",
CONFIG_PDCURSES_FBDEV, errno));
goto errout_with_sp;
}
/* Get the characteristics of the framebuffer */
ret = ioctl(fbstate->fbfd, FBIOGET_VIDEOINFO,
(unsigned long)((uintptr_t)&vinfo));
if (ret < 0)
{
PDC_LOG(("ERROR: ioctl(FBIOGET_VIDEOINFO) failed: %d\n", errno));
goto errout_with_fbfd;
}
PDC_LOG(("VideoInfo:\n"));
PDC_LOG((" fmt: %u\n", vinfo.fmt));
PDC_LOG((" xres: %u\n", vinfo.xres));
PDC_LOG((" yres: %u\n", vinfo.yres));
PDC_LOG((" nplanes: %u\n", vinfo.nplanes));
fbstate->xres = vinfo.xres; /* Horizontal resolution in pixel columns */
fbstate->yres = vinfo.yres; /* Vertical resolution in pixel rows */
/* Only one color format supported. */
if (vinfo.fmt != PDCURSES_COLORFMT)
{
PDC_LOG(("ERROR: color format=%u not supported\n", vinfo.fmt));
goto errout_with_fbfd;
}
#ifdef PDCURSES_MONOCHROME
/* Remember if we are using a monochrome framebuffer */
SP->mono = true;
#endif
/* Get characteristics of the color plane */
ret = ioctl(fbstate->fbfd, FBIOGET_PLANEINFO,
(unsigned long)((uintptr_t)&pinfo));
if (ret < 0)
{
PDC_LOG(("ERROR: ioctl(FBIOGET_PLANEINFO) failed: %d\n", errno));
goto errout_with_fbfd;
}
PDC_LOG(("PlaneInfo (plane 0):\n"));
PDC_LOG((" fbmem: %p\n", pinfo.fbmem));
PDC_LOG((" fblen: %lu\n", (unsigned long)pinfo.fblen));
PDC_LOG((" stride: %u\n", pinfo.stride));
PDC_LOG((" display: %u\n", pinfo.display));
PDC_LOG((" bpp: %u\n", pinfo.bpp));
fbstate->stride = pinfo.stride; /* Length of a line in bytes */
/* Only one pixel depth is supported. */
if (pinfo.bpp != PDCURSES_BPP)
{
PDC_LOG(("ERROR: bpp=%u not supported\n", pinfo.bpp));
goto errout_with_fbfd;
}
/* mmap() the framebuffer.
*
* NOTE: In the FLAT build the frame buffer address returned by the
* FBIOGET_PLANEINFO IOCTL command will be the same as the framebuffer
* address. mmap(), however, is the preferred way to get the framebuffer
* address because in the KERNEL build, it will perform the necessary
* address mapping to make the memory accessible to the application.
*/
fbstate->fbmem = mmap(NULL, pinfo.fblen, PROT_READ|PROT_WRITE,
MAP_SHARED|MAP_FILE, fbstate->fbfd, 0);
if (fbstate->fbmem == MAP_FAILED)
{
PDC_LOG(("ERROR: ioctl(FBIOGET_PLANEINFO) failed: %d\n", errno));
goto errout_with_fbfd;
}
PDC_LOG(("Mapped FB: %p\n", fbstate->fbmem));
/* Get the handle for the selected font */
fbstate->hfont = nxf_getfonthandle(PDCURSES_FONTID);
if (fbstate->hfont == NULL)
{
PDC_LOG(("ERROR: Failed to get font handle: %d\n", errno));
goto errout_with_fbfd;
}
#ifdef HAVE_BOLD_FONT
/* Get the handle for the matching bold font. It is assume that the
* geometry of the bold font is exactly the same as the geometry of
* the "normal" font.
*/
fbstate->hbold = nxf_getfonthandle(PDCURSES_BOLD_FONTID);
if (fbstate->hbold == NULL)
{
PDC_LOG(("ERROR: Failed to get font handle: %d\n", errno));
goto errout_with_font;
}
#endif
/* Get information about the fontset */
fontset = nxf_getfontset(fbstate->hfont);
if (fontset == NULL)
{
PDC_LOG(("ERROR: Failed to get font handle: %d\n", errno));
goto errout_with_boldfont;
}
PDC_LOG(("Fontset (ID=%d):\n", PDCURSES_FONTID));
PDC_LOG((" mxheight: %u\n", fontset->mxheight));
PDC_LOG((" mxwidth: %u\n", fontset->mxwidth));
PDC_LOG((" mxbits: %u\n", fontset->mxbits));
PDC_LOG((" spwidth: %u\n", fontset->spwidth));
fbstate->fheight = fontset->mxheight;
fbstate->fwidth = fontset->mxwidth;
#if PDCURSES_BPP < 8
/* Allocate the font buffer for < 8-bit display */
fbstate->fstride =
(fbstate->fwidth + PDCURSES_PPB_MASK) >> PDCURSES_PPB_SHIFT;
fbstate->fbuffer = (FAR uint8_t *)
malloc(fbstate->fstride * fbstate->fheight);
if (fbstate->fbuffer == NULL)
{
PDC_LOG(("ERROR: Failed to allocate fstride: %d\n", errno));
goto errout_with_boldfont;
}
#endif
/* Calculate the drawable region */
SP->lines = fbstate->yres / fbstate->fheight;
SP->cols = fbstate->xres / fbstate->fwidth;
fbstate->hoffset = (fbstate->xres - fbstate->fwidth * SP->cols) / 2;
fbstate->voffset = (fbstate->yres - fbstate->fheight * SP->lines) / 2;
/* Set the framebuffer to a known state */
PDC_clear_screen(fbstate);
#ifdef CONFIG_PDCURSES_HAVE_INPUT
/* Open and configure any input devices */
ret = PDC_input_open(fbstate);
if (ret == ERR)
{
goto errout_with_fbuffer;
}
#endif
return OK;
#ifdef CONFIG_PDCURSES_HAVE_INPUT
errout_with_fbuffer:
#if PDCURSES_BPP < 8
free(fbstate->fbuffer);
#endif
#endif
errout_with_boldfont:
#ifdef HAVE_BOLD_FONT
errout_with_font:
#endif
errout_with_fbfd:
close(fbstate->fbfd);
fbstate->fbfd = -1;
errout_with_sp:
free(SP);
SP = NULL;
return ERR;
}
/****************************************************************************
* Name: PDC_resize_screen
*
* Description:
* This does the main work of resize_term(). It may respond to non-zero
* parameters, by setting the screen to the specified size; to zero
* parameters, by setting the screen to a size chosen by the user at
* runtime, in an unspecified way (e.g., by dragging the edges of the
* window); or both. It may also do nothing, if there's no appropriate
* action for the platform.
*
****************************************************************************/
int PDC_resize_screen(int nlines, int ncols)
{
PDC_LOG(("PDC_resize_screen() - called. Lines: %d Cols: %d\n",
nlines, ncols));
/* We cannot resize the hardware framebuffer */
return ERR;
}
/****************************************************************************
* Name: PDC_reset_prog_mode
*
* Description:
* The non-portable functionality of reset_prog_mode() is handled here --
* whatever's not done in _restore_mode(). In current ports: In OS/2, this
* sets the keyboard to binary mode; in Win32, it enables or disables the
* mouse pointer to match the saved mode; in others it does nothing.
*
****************************************************************************/
void PDC_reset_prog_mode(void)
{
PDC_LOG(("PDC_reset_prog_mode() - called.\n"));
}
/****************************************************************************
* Name: PDC_reset_shell_mode
*
* Description:
* The same thing for reset_shell_mode() as PDC_reset_prog_mode(). In OS/2
* and Win32, it restores the default console mode; in others it does
* nothing.
*
****************************************************************************/
void PDC_reset_shell_mode(void)
{
PDC_LOG(("PDC_reset_shell_mode() - called.\n"));
}
/****************************************************************************
* Name: PDC_restore_screen_mode
*
* Description:
* Called from _restore_mode() in pdc_kernel.c, this function does the
* actual mode changing, if applicable. Currently used only in DOS and
* OS/2.
*
****************************************************************************/
void PDC_restore_screen_mode(int i)
{
PDC_LOG(("PDC_restore_screen_mode(). i=%d.\n", i));
}
/****************************************************************************
* Name: PDC_save_screen_mode
*
* Description:
* Called from _save_mode() in pdc_kernel.c, this function saves the actual
* screen mode, if applicable. Currently used only in DOS and OS/2.
*
****************************************************************************/
void PDC_save_screen_mode(int i)
{
PDC_LOG(("PDC_save_screen_mode(). i=%d.\n", i));
}
/****************************************************************************
* Name: PDC_init_pair
*
* Description:
* The core of init_pair(). This does all the work of that function, except
* checking for values out of range. The values passed to this function
* should be returned by a call to PDC_pair_content() with the same pair
* number. PDC_transform_line() should use the specified colors when
* rendering a chtype with the given pair number.
*
****************************************************************************/
void PDC_init_pair(short pair, short fg, short bg)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
FAR struct pdc_fbscreen_s *fbscreen = (FAR struct pdc_fbscreen_s *)SP;
FAR struct pdc_fbstate_s *fbstate;
PDC_LOG(("PDC_init_pair(). pair=%d, fg=%d, bg=%d\n", pair, fg, bg));
#ifdef CONFIG_SYSTEM_TERMCURSES
if (!graphic_screen)
{
/* Process as terminal mode screen */
PDC_init_pair_term(SP, pair, fg, bg);
return;
}
#endif /* CONFIG_SYSTEM_TERMCURSES */
DEBUGASSERT(fbscreen != NULL);
fbstate = &fbscreen->fbstate;
fbstate->colorpair[pair].fg = fg;
fbstate->colorpair[pair].bg = bg;
}
/****************************************************************************
* Name: PDC_pair_content
*
* Description:
* The core of pair_content(). This does all the work of that function,
* except checking for values out of range and null pointers.
*
****************************************************************************/
int PDC_pair_content(short pair, short *fg, short *bg)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
FAR struct pdc_fbscreen_s *fbscreen = (FAR struct pdc_fbscreen_s *)SP;
FAR struct pdc_fbstate_s *fbstate;
PDC_LOG(("PDC_pair_content(). pair=%d\n", pair));
#ifdef CONFIG_SYSTEM_TERMCURSES
if (!graphic_screen)
{
/* Process as terminal mode screen */
return PDC_pair_content_term(SP, pair, fg, bg);
}
#endif /* CONFIG_SYSTEM_TERMCURSES */
DEBUGASSERT(fbscreen != NULL);
fbstate = &fbscreen->fbstate;
*fg = fbstate->colorpair[pair].fg;
*bg = fbstate->colorpair[pair].bg;
return OK;
}
/****************************************************************************
* Name: PDC_can_change_color
*
* Description:
* Returns true if init_color() and color_content() give meaningful
* results, false otherwise. Called from can_change_color().
*
****************************************************************************/
bool PDC_can_change_color(void)
{
return true;
}
/****************************************************************************
* Name: PDC_color_content
*
* Description:
* The core of color_content(). This does all the work of that function,
* except checking for values out of range and null pointers.
*
****************************************************************************/
int PDC_color_content(short color, short *red, short *green, short *blue)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
FAR struct pdc_fbscreen_s *fbscreen = (FAR struct pdc_fbscreen_s *)SP;
FAR struct pdc_fbstate_s *fbstate;
#ifdef PDCURSES_MONOCHROME
short greylevel;
#endif
PDC_LOG(("PDC_init_color(). color=%d\n", color));
#ifdef CONFIG_SYSTEM_TERMCURSES
if (!graphic_screen)
{
/* Process as terminal mode screen */
return PDC_color_content_term(SP, color, red, green, blue);
}
#endif
DEBUGASSERT(fbscreen != NULL);
fbstate = &fbscreen->fbstate;
#ifdef PDCURSES_MONOCHROME
greylevel = DIVROUND(fbstate->greylevel[color] * 1000, 255);
*red = greylevel;
*green = greylevel;
*blue = greylevel;
#else
*red = DIVROUND(fbstate->rgbcolor[color].red * 1000, 255);
*green = DIVROUND(fbstate->rgbcolor[color].green * 1000, 255);
*blue = DIVROUND(fbstate->rgbcolor[color].blue * 1000, 255);
#endif
return OK;
}
/****************************************************************************
* Name: PDC_init_color
*
* Description:
* The core of init_color(). This does all the work of that function,
* except checking for values out of range.
*
****************************************************************************/
int PDC_init_color(short color, short red, short green, short blue)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
FAR struct pdc_fbscreen_s *fbscreen = (FAR struct pdc_fbscreen_s *)SP;
FAR struct pdc_fbstate_s *fbstate;
#ifdef PDCURSES_MONOCHROME
uint16_t greylevel;
#endif
PDC_LOG(("PDC_init_color(). color=%d, red=%d, green=%d, blue=%d\n",
color, red, green, blue));
#ifdef CONFIG_SYSTEM_TERMCURSES
if (!graphic_screen)
{
/* Process as terminal mode screen */
return PDC_init_color_term(SP, color, red, green, blue);
}
#endif
DEBUGASSERT(fbscreen != NULL);
fbstate = &fbscreen->fbstate;
#ifdef PDCURSES_MONOCHROME
greylevel = (DIVROUND(red * 255, 1000) +
DIVROUND(green * 255, 1000) +
DIVROUND(blue * 255, 1000)) / 3;
fbstate->greylevel[color] = (uint8_t)greylevel;
#else
fbstate->rgbcolor[color].red = DIVROUND(red * 255, 1000);
fbstate->rgbcolor[color].green = DIVROUND(green * 255, 1000);
fbstate->rgbcolor[color].blue = DIVROUND(blue * 255, 1000);
#endif
return OK;
}
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