mirror
/
PDCursesMod
mirror of https://github.com/Bill-Gray/PDCursesMod
Code Releases Activity
You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
master
posix-feature
clocks
GitMensch-manual-text-attributes
GitMensch-patch-appveypor-vs2022
x11new
GitMensch-Dunicode
PDCurses_3_4
4.2.0-beta
PDCurses_2_4
PDCurses_2_5
PDCurses_2_6
PDCurses_2_7
PDCurses_2_8
PDCurses_3_0
PDCurses_3_1
PDCurses_3_2
PDCurses_3_3
v4.0.2
v4.1.0
v4.2.0
v4.3.0
v4.3.1
v4.3.2
v4.3.2a
v4.3.3
v4.3.4
v4.3.5
v4.3.6
v4.3.7
v4.4.0
v4.5.0
v4.5.1
v4.5.2
v4.5.3
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '4.2.0-beta'
${ noResults }
PDCursesMod/x11/pdcscrn.c

858 lines
24 KiB
C
Raw Permalink Blame History

/* PDCurses */
#include "pdcx11.h"
/* special purpose function keys */
static int PDC_shutdown_key[PDC_MAX_FUNCTION_KEYS] = { 0, 0, 0, 0, 0 };
#include <xpm.h>
#include <stdlib.h>
#include <string.h>
/* Default icons for XCurses applications. */
#include "../common/icon64.xpm"
#include "../common/icon32.xpm"
#ifdef PDC_WIDE
# define DEFNFONT "-misc-fixed-medium-r-normal--20-200-75-75-c-100-iso10646-1"
# define DEFIFONT "-misc-fixed-medium-o-normal--20-200-75-75-c-100-iso10646-1"
# define DEFBFONT "-misc-fixed-bold-r-normal--20-200-75-75-c-100-iso10646-1"
#else
# define DEFNFONT "-misc-fixed-medium-r-normal--13-120-75-75-c-70-iso8859-1"
# define DEFIFONT "-misc-fixed-medium-o-normal--13-120-75-75-c-70-iso8859-1"
# define DEFBFONT "-misc-fixed-bold-r-normal--13-120-75-75-c-70-iso8859-1"
#endif
#ifndef MAX_PATH
# define MAX_PATH 256
#endif
/* Macros just for app_resources */
#define APPDATAOFF(n) XtOffsetOf(XCursesAppData, n)
#define RINT(name1, name2, value) { \
#name1, #name2, XtRInt, \
sizeof(int), APPDATAOFF(name1), XtRImmediate, \
(XtPointer)value \
}
#define RPIXEL(name1, name2, value) { \
#name1, #name2, XtRPixel, \
sizeof(Pixel), APPDATAOFF(name1), XtRString, \
(XtPointer)#value \
}
#define RCOLOR(name, value) RPIXEL(color##name, Color##name, value)
#define RSTRINGP(name1, name2, param) { \
#name1, #name2, XtRString, \
MAX_PATH, APPDATAOFF(name1), XtRString, (XtPointer)param \
}
#define RSTRING(name1, name2) RSTRINGP(name1, name2, "")
#define RFONT(name1, name2, value) { \
#name1, #name2, XtRFontStruct, \
sizeof(XFontStruct), APPDATAOFF(name1), XtRString, \
(XtPointer)value \
}
#define RCURSOR(name1, name2, value) { \
#name1, #name2, XtRCursor, \
sizeof(Cursor), APPDATAOFF(name1), XtRString, \
(XtPointer)#value \
}
static XtResource app_resources[] =
{
RINT(lines, Lines, -1),
RINT(cols, Cols, -1),
RCOLOR(Black, Black),
RCOLOR(Red, red3),
RCOLOR(Green, green3),
RCOLOR(Yellow, yellow3),
RCOLOR(Blue, blue3),
RCOLOR(Magenta, magenta3),
RCOLOR(Cyan, cyan3),
RCOLOR(White, Grey),
RCOLOR(BoldBlack, grey40),
RCOLOR(BoldRed, red1),
RCOLOR(BoldGreen, green1),
RCOLOR(BoldYellow, yellow1),
RCOLOR(BoldBlue, blue1),
RCOLOR(BoldMagenta, magenta1),
RCOLOR(BoldCyan, cyan1),
RCOLOR(BoldWhite, White),
RFONT(normalFont, NormalFont, DEFNFONT),
RFONT(italicFont, ItalicFont, DEFIFONT),
RFONT(boldFont, BoldFont, DEFBFONT),
RSTRING(bitmap, Bitmap),
RSTRING(pixmap, Pixmap),
RCURSOR(pointer, Pointer, xterm),
RPIXEL(pointerForeColor, PointerForeColor, Black),
RPIXEL(pointerBackColor, PointerBackColor, White),
RINT(doubleClickPeriod, DoubleClickPeriod, (PDC_CLICK_PERIOD * 2)),
RINT(clickPeriod, ClickPeriod, PDC_CLICK_PERIOD),
RINT(scrollbarWidth, ScrollbarWidth, 15),
RINT(cursorBlinkRate, CursorBlinkRate, 0),
RSTRING(textCursor, TextCursor),
RINT(textBlinkRate, TextBlinkRate, 500)
};
#undef RCURSOR
#undef RFONT
#undef RSTRING
#undef RCOLOR
#undef RPIXEL
#undef RINT
#undef APPDATAOFF
#undef DEFBFONT
#undef DEFIFONT
#undef DEFNFONT
/* Macros for options */
#define COPT(name) {"-" #name, "*" #name, XrmoptionSepArg, NULL}
#define CCOLOR(name) COPT(color##name)
static XrmOptionDescRec options[] =
{
COPT(lines), COPT(cols), COPT(normalFont), COPT(italicFont),
COPT(boldFont), COPT(bitmap), COPT(pixmap), COPT(pointer),
COPT(clickPeriod), COPT(doubleClickPeriod), COPT(scrollbarWidth),
COPT(pointerForeColor), COPT(pointerBackColor),
COPT(cursorBlinkRate), COPT(textCursor), COPT(textBlinkRate),
CCOLOR(Black), CCOLOR(Red), CCOLOR(Green), CCOLOR(Yellow),
CCOLOR(Blue), CCOLOR(Magenta), CCOLOR(Cyan), CCOLOR(White),
CCOLOR(BoldBlack), CCOLOR(BoldRed), CCOLOR(BoldGreen),
CCOLOR(BoldYellow), CCOLOR(BoldBlue), CCOLOR(BoldMagenta),
CCOLOR(BoldCyan), CCOLOR(BoldWhite)
};
#undef CCOLOR
#undef COPT
Pixel pdc_color[PDC_MAXCOL];
XCursesAppData pdc_app_data;
XtAppContext pdc_app_context;
Widget pdc_toplevel, pdc_drawing;
GC pdc_normal_gc, pdc_cursor_gc, pdc_italic_gc, pdc_bold_gc;
int pdc_fheight, pdc_fwidth, pdc_fascent, pdc_fdescent;
int pdc_wwidth, pdc_wheight;
bool pdc_window_entered = TRUE, pdc_resize_now = FALSE;
static Atom wm_atom[2];
static String class_name = "XCurses";
static int resize_window_width = 0, resize_window_height = 0;
static int received_map_notify = 0;
static bool exposed = FALSE;
static Pixmap icon_pixmap, icon_pixmap_mask;
static char *prog_name[] = {"PDCurses", NULL};
static char **argv = prog_name;
static int argc = 1;
/* close the physical screen */
void PDC_scr_close(void)
{
PDC_LOG(("PDC_scr_close() - called\n"));
}
void PDC_scr_free(void)
{
if (icon_pixmap)
{
XFreePixmap(XCURSESDISPLAY, icon_pixmap);
icon_pixmap = 0;
}
if (icon_pixmap_mask)
{
XFreePixmap(XCURSESDISPLAY, icon_pixmap_mask);
icon_pixmap_mask = 0;
}
if( pdc_normal_gc)
{
XFreeGC(XCURSESDISPLAY, pdc_normal_gc);
pdc_normal_gc = NULL;
}
if( pdc_italic_gc)
{
XFreeGC(XCURSESDISPLAY, pdc_italic_gc);
pdc_italic_gc = NULL;
}
if( pdc_bold_gc)
{
XFreeGC(XCURSESDISPLAY, pdc_bold_gc);
pdc_bold_gc = 0;
}
if( pdc_cursor_gc)
{
XFreeGC(XCURSESDISPLAY, pdc_cursor_gc);
pdc_cursor_gc = 0;
}
if( pdc_xic)
{
XDestroyIC(pdc_xic);
pdc_xic = 0;
}
}
void XCursesExit(void)
{
PDC_scr_free();
}
static void _initialize_colors(void)
{
int i, r, g, b;
pdc_color[COLOR_BLACK] = pdc_app_data.colorBlack;
pdc_color[COLOR_RED] = pdc_app_data.colorRed;
pdc_color[COLOR_GREEN] = pdc_app_data.colorGreen;
pdc_color[COLOR_YELLOW] = pdc_app_data.colorYellow;
pdc_color[COLOR_BLUE] = pdc_app_data.colorBlue;
pdc_color[COLOR_MAGENTA] = pdc_app_data.colorMagenta;
pdc_color[COLOR_CYAN] = pdc_app_data.colorCyan;
pdc_color[COLOR_WHITE] = pdc_app_data.colorWhite;
pdc_color[COLOR_BLACK + 8] = pdc_app_data.colorBoldBlack;
pdc_color[COLOR_RED + 8] = pdc_app_data.colorBoldRed;
pdc_color[COLOR_GREEN + 8] = pdc_app_data.colorBoldGreen;
pdc_color[COLOR_YELLOW + 8] = pdc_app_data.colorBoldYellow;
pdc_color[COLOR_BLUE + 8] = pdc_app_data.colorBoldBlue;
pdc_color[COLOR_MAGENTA + 8] = pdc_app_data.colorBoldMagenta;
pdc_color[COLOR_CYAN + 8] = pdc_app_data.colorBoldCyan;
pdc_color[COLOR_WHITE + 8] = pdc_app_data.colorBoldWhite;
#define RGB(R, G, B) ( ((unsigned long)(R) << 16) | \
((unsigned long)(G) << 8) | \
((unsigned long)(B)) )
/* 256-color xterm extended palette: 216 colors in a 6x6x6 color
cube, plus 24 shades of gray */
for (i = 16, r = 0; r < 6; r++)
for (g = 0; g < 6; g++)
for (b = 0; b < 6; b++)
pdc_color[i++] = RGB(r ? r * 40 + 55 : 0,
g ? g * 40 + 55 : 0,
b ? b * 40 + 55 : 0);
for (i = 0; i < 24; i++)
pdc_color[i + 232] = RGB(i * 10 + 8, i * 10 + 8, i * 10 + 8);
#undef RGB
}
static void _get_icon(void)
{
Status rc;
PDC_LOG(("_get_icon() - called\n"));
if (pdc_app_data.pixmap && pdc_app_data.pixmap[0]) /* supplied pixmap */
{
XpmReadFileToPixmap(XtDisplay(pdc_toplevel),
RootWindowOfScreen(XtScreen(pdc_toplevel)),
(char *)pdc_app_data.pixmap,
&icon_pixmap, &icon_pixmap_mask, NULL);
}
else if (pdc_app_data.bitmap && pdc_app_data.bitmap[0]) /* bitmap */
{
unsigned file_bitmap_width = 0, file_bitmap_height = 0;
int x_hot = 0, y_hot = 0;
rc = XReadBitmapFile(XtDisplay(pdc_toplevel),
RootWindowOfScreen(XtScreen(pdc_toplevel)),
(char *)pdc_app_data.bitmap,
&file_bitmap_width, &file_bitmap_height,
&icon_pixmap, &x_hot, &y_hot);
if (BitmapOpenFailed == rc)
fprintf(stderr, "bitmap file %s: not found\n",
pdc_app_data.bitmap);
else if (BitmapFileInvalid == rc)
fprintf(stderr, "bitmap file %s: contents invalid\n",
pdc_app_data.bitmap);
}
else
{
XIconSize *icon_size;
int size_count = 0, max_height = 0, max_width = 0;
icon_size = XAllocIconSize();
rc = XGetIconSizes(XtDisplay(pdc_toplevel),
RootWindowOfScreen(XtScreen(pdc_toplevel)),
&icon_size, &size_count);
/* if the WM can advise on icon sizes... */
if (rc && size_count)
{
int i;
PDC_LOG(("size_count: %d rc: %d\n", size_count, rc));
for (i = 0; i < size_count; i++)
{
if (icon_size[i].max_width > max_width)
max_width = icon_size[i].max_width;
if (icon_size[i].max_height > max_height)
max_height = icon_size[i].max_height;
PDC_LOG(("min: %d %d\n",
icon_size[i].min_width, icon_size[i].min_height));
PDC_LOG(("max: %d %d\n",
icon_size[i].max_width, icon_size[i].max_height));
PDC_LOG(("inc: %d %d\n",
icon_size[i].width_inc, icon_size[i].height_inc));
}
}
XFree(icon_size);
XpmCreatePixmapFromData(XtDisplay(pdc_toplevel),
RootWindowOfScreen(XtScreen(pdc_toplevel)),
(max_width >= 64 && max_height >= 64) ? icon64 : icon32,
&icon_pixmap, &icon_pixmap_mask, NULL);
}
}
/* Redraw the entire screen */
static void _display_screen(void)
{
int row;
PDC_LOG(("_display_screen() - called\n"));
if (!curscr)
return;
for (row = 0; row < SP->lines; row++)
PDC_transform_line(row, 0, COLS, curscr->_y[row]);
PDC_redraw_cursor();
}
static void _handle_expose(Widget w, XtPointer client_data, XEvent *event,
Boolean *unused)
{
PDC_LOG(("_handle_expose() - called\n"));
/* ignore all Exposes except last */
if (event->xexpose.count)
return;
exposed = TRUE;
if (received_map_notify)
_display_screen();
}
static void _handle_nonmaskable(Widget w, XtPointer client_data, XEvent *event,
Boolean *unused)
{
XClientMessageEvent *client_event = (XClientMessageEvent *)event;
PDC_LOG(("_handle_nonmaskable called: event %d\n", event->type));
if (event->type == ClientMessage)
{
PDC_LOG(("ClientMessage received\n"));
/* This code used to include handling of WM_SAVE_YOURSELF, but
it resulted in continual failure of THE on my Toshiba laptop.
Removed on 3-3-2001. Now only exits on WM_DELETE_WINDOW. */
if ((Atom)client_event->data.s[0] == wm_atom[0])
exit(0);
}
}
static void _handle_enter_leave(Widget w, XtPointer client_data,
XEvent *event, Boolean *unused)
{
PDC_LOG(("_handle_enter_leave called\n"));
switch(event->type)
{
case EnterNotify:
PDC_LOG(("EnterNotify received\n"));
pdc_window_entered = TRUE;
break;
case LeaveNotify:
PDC_LOG(("LeaveNotify received\n"));
pdc_window_entered = FALSE;
/* Display the cursor so it stays on while the window is
not current */
PDC_redraw_cursor();
break;
default:
PDC_LOG(("_handle_enter_leave - unknown event %d\n", event->type));
}
}
static void _handle_structure_notify(Widget w, XtPointer client_data,
XEvent *event, Boolean *unused)
{
PDC_LOG(("_handle_structure_notify() - called\n"));
switch(event->type)
{
case ConfigureNotify:
PDC_LOG(("ConfigureNotify received\n"));
if( resize_window_width != event->xconfigure.width
|| resize_window_height != event->xconfigure.height)
{
/* Window has been resized, change width and height to send to
place_text and place_graphics in next Expose. */
resize_window_width = event->xconfigure.width;
resize_window_height = event->xconfigure.height;
SP->resized = TRUE;
pdc_resize_now = TRUE;
}
break;
case MapNotify:
PDC_LOG(("MapNotify received\n"));
received_map_notify = 1;
break;
default:
PDC_LOG(("_handle_structure_notify - unknown event %d\n",
event->type));
}
}
static void _get_gc(GC *gc, XFontStruct *font_info, int fore, int back)
{
XGCValues values;
/* Create default Graphics Context */
*gc = XCreateGC(XCURSESDISPLAY, XCURSESWIN, 0L, &values);
/* specify font */
XSetFont(XCURSESDISPLAY, *gc, font_info->fid);
XSetForeground(XCURSESDISPLAY, *gc, pdc_color[fore]);
XSetBackground(XCURSESDISPLAY, *gc, pdc_color[back]);
}
static void _pointer_setup(void)
{
XColor pointerforecolor, pointerbackcolor;
XrmValue rmfrom, rmto;
XDefineCursor(XCURSESDISPLAY, XCURSESWIN, pdc_app_data.pointer);
rmfrom.size = sizeof(Pixel);
rmto.size = sizeof(XColor);
rmto.addr = (XPointer)&pointerforecolor;
rmfrom.addr = (XPointer)&(pdc_app_data.pointerForeColor);
XtConvertAndStore(pdc_drawing, XtRPixel, &rmfrom, XtRColor, &rmto);
rmfrom.size = sizeof(Pixel);
rmto.size = sizeof(XColor);
rmfrom.addr = (XPointer)&(pdc_app_data.pointerBackColor);
rmto.addr = (XPointer)&pointerbackcolor;
XtConvertAndStore(pdc_drawing, XtRPixel, &rmfrom, XtRColor, &rmto);
XRecolorCursor(XCURSESDISPLAY, pdc_app_data.pointer,
&pointerforecolor, &pointerbackcolor);
}
void PDC_set_args(int c, char **v)
{
argc = c;
argv = v;
}
/* open the physical screen -- miscellaneous initialization */
int PDC_scr_open(void)
{
bool italic_font_valid, bold_font_valid;
int minwidth, minheight;
PDC_LOG(("PDC_scr_open() - called\n"));
/* Start defining X Toolkit things */
#if XtSpecificationRelease > 4
XtSetLanguageProc(NULL, (XtLanguageProc)NULL, NULL);
#endif
/* Exit if no DISPLAY variable set */
if (!getenv("DISPLAY"))
{
fprintf(stderr, "Error: no DISPLAY variable set\n");
return ERR;
}
/* Initialise the top level widget */
pdc_toplevel = XtVaAppInitialize(&pdc_app_context, class_name, options,
XtNumber(options), &argc, argv, NULL, NULL);
XtVaGetApplicationResources(pdc_toplevel, &pdc_app_data, app_resources,
XtNumber(app_resources), NULL);
/* Check application resource values here */
pdc_fwidth = pdc_app_data.normalFont->max_bounds.rbearing -
pdc_app_data.normalFont->min_bounds.lbearing;
pdc_fascent = pdc_app_data.normalFont->max_bounds.ascent;
pdc_fdescent = pdc_app_data.normalFont->max_bounds.descent;
pdc_fheight = pdc_fascent + pdc_fdescent;
/* Check that the italic font and normal fonts are the same size */
italic_font_valid = pdc_fwidth ==
pdc_app_data.italicFont->max_bounds.rbearing -
pdc_app_data.italicFont->min_bounds.lbearing;
bold_font_valid = pdc_fwidth ==
pdc_app_data.boldFont->max_bounds.rbearing -
pdc_app_data.boldFont->min_bounds.lbearing;
/* Calculate size of display window */
COLS = pdc_app_data.cols;
LINES = pdc_app_data.lines;
if (-1 == COLS)
{
const char *env = getenv("PDC_COLS");
if (env)
COLS = atoi(env);
if (COLS <= 0)
COLS = 80;
}
if (-1 == LINES)
{
const char *env = getenv("PDC_LINES");
if (env)
LINES = atoi(env);
if (LINES <= 0)
LINES = 24;
}
pdc_wwidth = pdc_fwidth * COLS;
pdc_wheight = pdc_fheight * LINES;
minwidth = pdc_fwidth * 2;
minheight = pdc_fheight * 2;
/* Set up the icon for the application; the default is an internal
one for PDCurses. Then set various application level resources. */
_get_icon();
XtVaSetValues(pdc_toplevel, XtNminWidth, minwidth, XtNminHeight,
minheight, XtNbaseWidth, 0, XtNbaseHeight, 0,
XtNbackground, 0, XtNiconPixmap, icon_pixmap,
XtNiconMask, icon_pixmap_mask, NULL);
/* Create a widget in which to draw */
if (!PDC_scrollbar_init(argv[0]))
{
pdc_drawing = pdc_toplevel;
XtVaSetValues(pdc_toplevel, XtNwidth, pdc_wwidth, XtNheight,
pdc_wheight, XtNwidthInc, pdc_fwidth, XtNheightInc,
pdc_fheight, NULL);
}
/* Determine text cursor alignment from resources */
if (!strcmp(pdc_app_data.textCursor, "vertical"))
pdc_vertical_cursor = TRUE;
SP->lines = LINES;
SP->cols = COLS;
SP->mouse_wait = pdc_app_data.clickPeriod;
SP->audible = TRUE;
SP->termattrs = A_COLOR | A_ITALIC | A_UNDERLINE | A_LEFT | A_RIGHT |
A_REVERSE;
/* Add Event handlers to the drawing widget */
XtAddEventHandler(pdc_drawing, ExposureMask, False, _handle_expose, NULL);
XtAddEventHandler(pdc_drawing, StructureNotifyMask, False,
_handle_structure_notify, NULL);
XtAddEventHandler(pdc_drawing, EnterWindowMask | LeaveWindowMask, False,
_handle_enter_leave, NULL);
XtAddEventHandler(pdc_toplevel, 0, True, _handle_nonmaskable, NULL);
/* If there is a cursorBlink resource, start the Timeout event */
if (pdc_app_data.cursorBlinkRate)
XtAppAddTimeOut(pdc_app_context, pdc_app_data.cursorBlinkRate,
PDC_blink_cursor, NULL);
XtRealizeWidget(pdc_toplevel);
/* Handle trapping of the WM_DELETE_WINDOW property */
wm_atom[0] = XInternAtom(XtDisplay(pdc_toplevel), "WM_DELETE_WINDOW",
False);
XSetWMProtocols(XtDisplay(pdc_toplevel), XtWindow(pdc_toplevel),
wm_atom, 1);
/* Create the Graphics Context for drawing. This MUST be done AFTER
the associated widget has been realized. */
PDC_LOG(("before _get_gc\n"));
_get_gc(&pdc_normal_gc, pdc_app_data.normalFont, COLOR_WHITE, COLOR_BLACK);
_get_gc(&pdc_italic_gc, italic_font_valid ? pdc_app_data.italicFont :
pdc_app_data.normalFont, COLOR_WHITE, COLOR_BLACK);
_get_gc(&pdc_bold_gc, bold_font_valid ? pdc_app_data.boldFont :
pdc_app_data.normalFont, COLOR_WHITE, COLOR_BLACK);
_get_gc(&pdc_cursor_gc, pdc_app_data.normalFont,
COLOR_WHITE, COLOR_BLACK);
XSetLineAttributes(XCURSESDISPLAY, pdc_cursor_gc, 2,
LineSolid, CapButt, JoinMiter);
/* Set the pointer for the application */
_pointer_setup();
if (ERR == PDC_kb_setup())
return ERR;
while (!exposed)
{
XEvent event;
XtAppNextEvent(pdc_app_context, &event);
XtDispatchEvent(&event);
}
_initialize_colors();
SP->orig_attr = FALSE;
atexit(PDC_scr_free);
return OK;
}
/* the core of resize_term() */
int PDC_resize_screen(int nlines, int ncols)
{
PDC_LOG(("PDC_resize_screen() - called. Lines: %d Cols: %d\n",
nlines, ncols));
if (nlines || ncols || !SP->resized)
return ERR;
pdc_wwidth = resize_window_width;
pdc_wheight = resize_window_height;
pdc_visible_cursor = TRUE;
return OK;
}
void PDC_reset_prog_mode(void)
{
PDC_LOG(("PDC_reset_prog_mode() - called.\n"));
}
void PDC_reset_shell_mode(void)
{
PDC_LOG(("PDC_reset_shell_mode() - called.\n"));
}
void PDC_restore_screen_mode(int i)
{
}
void PDC_save_screen_mode(int i)
{
}
bool PDC_can_change_color(void)
{
return TRUE;
}
int PDC_color_content(int color, int *red, int *green, int *blue)
{
XColor tmp;
Colormap cmap = DefaultColormap(XCURSESDISPLAY,
DefaultScreen(XCURSESDISPLAY));
tmp.pixel = pdc_color[color];
XQueryColor(XCURSESDISPLAY, cmap, &tmp);
*red = ((double)(tmp.red) * 1000 / 65535) + 0.5;
*green = ((double)(tmp.green) * 1000 / 65535) + 0.5;
*blue = ((double)(tmp.blue) * 1000 / 65535) + 0.5;
return OK;
}
int PDC_init_color(int color, int red, int green, int blue)
{
XColor tmp;
tmp.red = ((double)red * 65535 / 1000) + 0.5;
tmp.green = ((double)green * 65535 / 1000) + 0.5;
tmp.blue = ((double)blue * 65535 / 1000) + 0.5;
Colormap cmap = DefaultColormap(XCURSESDISPLAY,
DefaultScreen(XCURSESDISPLAY));
if (XAllocColor(XCURSESDISPLAY, cmap, &tmp))
pdc_color[color] = tmp.pixel;
return OK;
}
/*man-start**************************************************************
Function keys
-------------
### Synopsis
int PDC_set_function_key( const unsigned function, const int new_key);
### Description
Allows one to set a 'shut down' key, and reassign hotkeys used for
pasting from the clipboard and enlarging and decreasing the font size,
and for using the font selection dialog (on platforms where these
things are possible and implemented). For example, calling
PDC_set_function_key( FUNCTION_KEY_SHUT_DOWN, ALT_Q);
would reset PDCurses such that, if the user clicks on the 'close' box,
Alt-Q would be added to the key queue. This would give the app the
opportunity to shut things down gracefully, perhaps asking "are you
sure", and/or "save changes or discard or cancel", rather than just
having the window close (the default behavior).
Similarly, one can set FUNCTION_KEY_ABORT to a key which, when pressed,
will cause the program to abort gracelessly (no key returned to the
application). One would normally use this to enable/disable Ctrl-C or
Ctrl-Break.
### Return Value
Returns key code previously set for that function, or -1 if the
function does not actually exist.
### Portability
PDCurses-only function.
**man-end****************************************************************/
int PDC_set_function_key( const unsigned function, const int new_key)
{
int old_key = -1;
if (function < PDC_MAX_FUNCTION_KEYS)
{
old_key = PDC_shutdown_key[function];
PDC_shutdown_key[function] = new_key;
}
return(old_key);
}
/*man-start**************************************************************
Resize limits
-------------
### Synopsis
void PDC_set_resize_limits( const int new_min_lines,
const int new_max_lines,
const int new_min_cols,
const int new_max_cols);
### Description
For platforms supporting resizable windows (SDLx, WinGUI, X11). Some
programs may be unprepared for a resize event; for these, calling
this function with the max and min limits equal ensures that no
user resizing can be done. Other programs may require at least a
certain number, and/or no more than a certain number, of columns
and/or lines.
### Portability
PDCurses-only function.
**man-end****************************************************************/
/* Note that at least at present, only WinGUI pays any attention to
resize limits. */
int PDC_min_lines = 25, PDC_min_cols = 80;
int PDC_max_lines = 25, PDC_max_cols = 80;
void PDC_set_resize_limits( const int new_min_lines, const int new_max_lines,
const int new_min_cols, const int new_max_cols)
{
PDC_min_lines = max( new_min_lines, 2);
PDC_max_lines = max( new_max_lines, PDC_min_lines);
PDC_min_cols = max( new_min_cols, 2);
PDC_max_cols = max( new_max_cols, PDC_min_cols);
}
View Git Blame Copy Permalink