diff options
Diffstat (limited to 'reference/C/X_EXAMPLES')
| -rw-r--r-- | reference/C/X_EXAMPLES/Makefile.am | 5 | ||||
| -rw-r--r-- | reference/C/X_EXAMPLES/Makefile.in | 410 | ||||
| -rw-r--r-- | reference/C/X_EXAMPLES/Xref.html | 55 | ||||
| -rw-r--r-- | reference/C/X_EXAMPLES/hardware.c | 63 | ||||
| -rw-r--r-- | reference/C/X_EXAMPLES/root_colour.c | 235 | ||||
| -rw-r--r-- | reference/C/X_EXAMPLES/xxterm.c | 615 |
6 files changed, 1383 insertions, 0 deletions
diff --git a/reference/C/X_EXAMPLES/Makefile.am b/reference/C/X_EXAMPLES/Makefile.am new file mode 100644 index 0000000..142b747 --- /dev/null +++ b/reference/C/X_EXAMPLES/Makefile.am @@ -0,0 +1,5 @@ +EXTRA_DIST = $(wildcard *.html) $(wildcard *.c) +docs_DATA = $(EXTRA_DIST) + +docsdir = $(kde_htmldir)/en/kdevelop/$(subdir) + diff --git a/reference/C/X_EXAMPLES/Makefile.in b/reference/C/X_EXAMPLES/Makefile.in new file mode 100644 index 0000000..6c7c98b --- /dev/null +++ b/reference/C/X_EXAMPLES/Makefile.in @@ -0,0 +1,410 @@ +# KDE tags expanded automatically by am_edit - $Revision: 1.2 $ +# Makefile.in generated automatically by automake 1.5 from Makefile.am. + +# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 +# Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +SHELL = @SHELL@ + +srcdir = @srcdir@ +top_srcdir = @top_srcdir@ +VPATH = @srcdir@ +prefix = @prefix@ +exec_prefix = @exec_prefix@ + +bindir = @bindir@ +sbindir = @sbindir@ +libexecdir = @libexecdir@ +datadir = @datadir@ +sysconfdir = @sysconfdir@ +sharedstatedir = @sharedstatedir@ +localstatedir = @localstatedir@ +libdir = @libdir@ +infodir = @infodir@ +mandir = @mandir@ +includedir = @includedir@ +oldincludedir = /usr/include +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +top_builddir = ../../.. + +ACLOCAL = @ACLOCAL@ +AUTOCONF = @AUTOCONF@ +AUTOMAKE = @AUTOMAKE@ +AUTOHEADER = @AUTOHEADER@ + +INSTALL = @INSTALL@ +INSTALL_PROGRAM = @INSTALL_PROGRAM@ +INSTALL_DATA = @INSTALL_DATA@ +INSTALL_SCRIPT = @INSTALL_SCRIPT@ +INSTALL_HEADER = $(INSTALL_DATA) +transform = @program_transform_name@ +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_alias = @build_alias@ +build_triplet = @build@ +host_alias = @host_alias@ +host_triplet = @host@ +target_alias = @target_alias@ +target_triplet = @target@ +AMTAR = @AMTAR@ +ARTSCCONFIG = @ARTSCCONFIG@ +AS = @AS@ +AUTODIRS = @AUTODIRS@ +AWK = @AWK@ +CC = @CC@ +CONF_FILES = @CONF_FILES@ +CPP = @CPP@ +CXX = @CXX@ +CXXCPP = @CXXCPP@ +DCOPIDL = @DCOPIDL@ +DCOPIDL2CPP = @DCOPIDL2CPP@ +DCOP_DEPENDENCIES = @DCOP_DEPENDENCIES@ +DEPDIR = @DEPDIR@ +DLLTOOL = @DLLTOOL@ +DPMSINC = @DPMSINC@ +DPMSLIB = @DPMSLIB@ +EXEEXT = @EXEEXT@ +GCJ = @GCJ@ +GCJFLAGS = @GCJFLAGS@ +GLINC = @GLINC@ +GLLIB = @GLLIB@ +GMSGFMT = @GMSGFMT@ +IDL = @IDL@ +IDL_DEPENDENCIES = @IDL_DEPENDENCIES@ +INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@ +JAR = @JAR@ +JAVAC = @JAVAC@ +JAVAH = @JAVAH@ +JVMLIBS = @JVMLIBS@ +KDECONFIG = 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reference/C/X_EXAMPLES/Makefile.in +Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status + cd $(top_builddir) && \ + CONFIG_HEADERS= CONFIG_LINKS= \ + CONFIG_FILES=$(subdir)/$@ $(SHELL) ./config.status +uninstall-info-am: +install-docsDATA: $(docs_DATA) + @$(NORMAL_INSTALL) + $(mkinstalldirs) $(DESTDIR)$(docsdir) + @list='$(docs_DATA)'; for p in $$list; do \ + if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \ + f="`echo $$p | sed -e 's|^.*/||'`"; \ + echo " $(INSTALL_DATA) $$d$$p $(DESTDIR)$(docsdir)/$$f"; \ + $(INSTALL_DATA) $$d$$p $(DESTDIR)$(docsdir)/$$f; \ + done + +uninstall-docsDATA: + @$(NORMAL_UNINSTALL) + @list='$(docs_DATA)'; for p in $$list; do \ + f="`echo $$p | sed -e 's|^.*/||'`"; \ + echo " rm -f $(DESTDIR)$(docsdir)/$$f"; \ + rm -f $(DESTDIR)$(docsdir)/$$f; \ + done +tags: TAGS +TAGS: + + +#>- DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) +#>+ 4 +KDE_DIST=root_colour.c xxterm.c hardware.c Xref.html + +DISTFILES= $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) $(KDE_DIST) + + +top_distdir = ../../.. +distdir = $(top_distdir)/$(PACKAGE)-$(VERSION) + +distdir: $(DISTFILES) + @for file in $(DISTFILES); do \ + if test -f $$file; then d=.; else d=$(srcdir); fi; \ + dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \ + if test "$$dir" != "$$file" && test "$$dir" != "."; then \ + $(mkinstalldirs) "$(distdir)/$$dir"; \ + fi; \ + if test -d $$d/$$file; then \ + cp -pR $$d/$$file $(distdir) \ + || exit 1; \ + else \ + test -f $(distdir)/$$file \ + || cp -p $$d/$$file $(distdir)/$$file \ + || exit 1; \ + fi; \ + done +check-am: all-am +check: check-am +all-am: Makefile $(DATA) + +installdirs: + $(mkinstalldirs) $(DESTDIR)$(docsdir) + +install: install-am +install-exec: install-exec-am +install-data: install-data-am +uninstall: uninstall-am + +install-am: all-am + @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am + +installcheck: installcheck-am +install-strip: + $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \ + `test -z '$(STRIP)' || \ + echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install +mostlyclean-generic: + +clean-generic: + +distclean-generic: + -rm -f Makefile $(CONFIG_CLEAN_FILES) stamp-h stamp-h[0-9]* + +maintainer-clean-generic: + @echo "This command is intended for maintainers to use" + @echo "it deletes files that may require special tools to rebuild." +#>- clean: clean-am +#>+ 1 +clean: kde-rpo-clean clean-am + +clean-am: clean-generic clean-libtool mostlyclean-am + +distclean: distclean-am + +distclean-am: clean-am distclean-generic distclean-libtool + +dvi: dvi-am + +dvi-am: + +info: info-am + +info-am: + +install-data-am: install-docsDATA + +install-exec-am: + +install-info: install-info-am + +install-man: + +installcheck-am: + +maintainer-clean: maintainer-clean-am + +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-generic mostlyclean-libtool + +uninstall-am: uninstall-docsDATA uninstall-info-am + +.PHONY: all all-am check check-am clean clean-generic clean-libtool \ + distclean distclean-generic distclean-libtool distdir dvi \ + dvi-am info info-am install install-am install-data \ + install-data-am install-docsDATA install-exec install-exec-am \ + install-info install-info-am install-man install-strip \ + installcheck installcheck-am installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-generic \ + mostlyclean-libtool uninstall uninstall-am uninstall-docsDATA \ + uninstall-info-am + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: + +#>+ 2 +docs-am: + +#>+ 6 +force-reedit: + cd $(top_srcdir) && \ + $(AUTOMAKE) --gnu reference/C/X_EXAMPLES/Makefile + cd $(top_srcdir) && perl admin/am_edit reference/C/X_EXAMPLES/Makefile.in + + +#>+ 2 +final: + $(MAKE) all-am +#>+ 2 +final-install: + $(MAKE) install-am +#>+ 2 +no-final: + $(MAKE) all-am +#>+ 2 +no-final-install: + $(MAKE) install-am +#>+ 3 +cvs-clean: + $(MAKE) -f $(top_srcdir)/admin/Makefile.common cvs-clean + +#>+ 3 +kde-rpo-clean: + -rm -f *.rpo diff --git a/reference/C/X_EXAMPLES/Xref.html b/reference/C/X_EXAMPLES/Xref.html new file mode 100644 index 0000000..ee40749 --- /dev/null +++ b/reference/C/X_EXAMPLES/Xref.html @@ -0,0 +1,55 @@ +<title>X Examples</title> +<body bgcolor=#f5deb3> +<hr> +<center> +<h1>X Examples</h1> +</center> +<hr> +<p> + +The following programs will only run under the 'X Windows' environment, +they have been tested on Linux running X11R6 and SunOS running X11R5. +If you are a DOS/Windows user these programs will not compile until +you junk 'Windows' and install Linux. + +<dl compact> + +<dt><img src=../../GRAPHICS/computer.gif> +<a href=hardware.c>A few statistics about your X environment</a> + +<dt><img src=../../GRAPHICS/computer.gif> +<a href=root_colour.c>randomly change the colour of the root window.</a> + +<dt><img src=../../GRAPHICS/computer.gif> +<a href=xxterm.c> A tool for issuing an rlogin to anothe machine. It basicaly +saves a bit of typing. +</dl> +<hr> +<p> +<center> +<table border=2 width=80% bgcolor=ivory> +<tr align=center> +<td width=25%> +<a href="../cref.html" target="_top">Top</a> +</td><td width=25%> +<a href="../master_index.html" target="_top">Master Index</a> +</td><td width=25%> +<a href="../SYNTAX/keywords.html" target="_top">C Keywords</a> +</td><td width=25%> +<a href="../FUNCTIONS/funcref.htm" target="_top">Functions</a> +</td> +</tr> +</table> +</center> +<p> + +<hr> +<address>Martin Leslie +<script language="JavaScript"> +<!-- // +document.write(document.lastModified); +// --> +</script> +</address> + + diff --git a/reference/C/X_EXAMPLES/hardware.c b/reference/C/X_EXAMPLES/hardware.c new file mode 100644 index 0000000..bca5b3e --- /dev/null +++ b/reference/C/X_EXAMPLES/hardware.c @@ -0,0 +1,63 @@ +/************************************************************************ + * + * Purpose: Program extracts information from the X server and displays + * it on the screen. + * + * Notes: Use the following command to compile. + * + * gcc hardware.c -lX11 + * + * Author: M.J. Leslie + * + * Date: 26-Mar-95 + * + ************************************************************************/ + +/****************** Includes ********************************************/ + /* These are in /usr/X386 */ +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <X11/Xos.h> + +#include <stdio.h> + +main() +{ + Display * display; + int screen; + char * display_name=NULL; + Window root; + Visual* visual; + + /* Connect to X display server. */ + display=XOpenDisplay(display_name); + + /* Get screen ID */ + screen=DefaultScreen(display); + + + printf("\n\tInformation extracted from the X server\n"); + printf("\t---------------------------------------\n\n"); + + printf(" X server by \'%s\'\n", ServerVendor(display)); + + printf(" X Server protocol %d\n", ProtocolVersion(display)); + + printf(" X server Release %d\n", VendorRelease(display)); + + printf(" Screen is %dmm high.\n", DisplayHeightMM(display, screen)); + + printf(" Screen is %dmm wide.\n", DisplayWidthMM(display, screen)); + + printf(" Screen is %d pixels high.\n", DisplayHeight(display, screen)); + + printf(" Screen is %d pixels wide.\n", DisplayWidth(display, screen)); + + visual = DefaultVisual(display,screen); + printf(" %3d Colour map entries", visual->map_entries); + printf(" (Number of colours on the screen at one time).\n"); + + printf(" %3d Display planes (bits per screen pixel).\n", DisplayPlanes(display, screen)); + + printf(" There is %d screen(s).\n", ScreenCount (display)); +}
\ No newline at end of file diff --git a/reference/C/X_EXAMPLES/root_colour.c b/reference/C/X_EXAMPLES/root_colour.c new file mode 100644 index 0000000..430baa8 --- /dev/null +++ b/reference/C/X_EXAMPLES/root_colour.c @@ -0,0 +1,235 @@ +/************************************************************************ + * + * Purpose: Program to randomly change the root window colour on X Displays. + * + * Description. + * The program randomly selects a target colour and then + * performs a basic interpolation to move from the current + * colour to the target colour. When the target has been + * reached, a new target is selected and the process is + * repeated. + * + * Notes: 1) No attempt is made to see if the client supports colour. + * 2) Other applications may cause problems if they have allocated + * all the available colour cells in the colour map. + * 3) Use the following command to compile. + * + * gcc root_col.c -lX11 + * 4) Tested on Linux running XFree386 and FVWM + * and SunOS 4.1.3 running X11R5 and Motif. + * + * Author: M.J. Leslie + * + * Date: 26-Mar-95 + * + ************************************************************************/ +/****************** Includes ********************************************/ + +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <X11/Xos.h> + +#include <stdio.h> +#include <stdlib.h> + +/************************************************************************/ + +#define INC 512 /* Increments between colours. */ +#define MAX_COL 65536 /* Max number of colours. */ +#define SECONDS 2 /* # of seconds between updates */ + +/****************** Functions *******************************************/ + +void help(char * proganme); /* Give some help on syntax. */ + + /* Used to see if a colour gun has + * reached its required intensity + */ +int reached_target( unsigned short colour, unsigned short target_colour); + +void root_colour(int seconds); /* Where the real work starts. */ + + /* Change the colour of the + * root window */ +void change_colour(Display * display, + Window root, + Colormap colormap, + XColor colour); + +/************************************************************************/ + +main(int argc, char * argv[]) + { + int seconds=SECONDS; + /* Have we got cmd line parms? */ + if (argc > 1 ) + { + /* Yes. Is Help Required? */ + if ( !strcmp(argv[1], "-h")) + { + help(argv[0]); /* Yes. */ + exit(0); + } + /* Do we have an integer. */ + if (!sscanf(argv[1], "%u", &seconds)) + { + help(argv[0]); /* No. */ + exit(0); + } + + } + + root_colour(seconds); /* Start colouring the + * root window. + * 'seconds' is the # of seconds + * between updates. */ + } + +/************************************************************************/ + +void root_colour(int seconds) + { + Display * display; + int screen; + char * display_name=NULL; + Window root; + Colormap colormap; + XColor colour, target_colour; + + /**************************************** + * + * Initalise the X environment. + * + ****************************************/ + + /* Connect to X display server. */ + display=XOpenDisplay(display_name); + + /* Get screen ID */ + screen=DefaultScreen(display); + + root=RootWindow(display, screen); + + /* Load the default colour map */ + colormap = DefaultColormap(display, screen); + + /* Starting colour - Grey */ + colour.red=MAX_COL/2; colour.green=MAX_COL/2; colour.blue=MAX_COL/2; + + colour.flags = DoRed|DoGreen|DoBlue; + + /**************************************** + * + * Loop forever. + * + ****************************************/ + + while(1) + { + /* Increments used to go from the current + * colour to the target colour. */ + + int red_inc, green_inc, blue_inc; + + /* Flags used to show when the target + * colour has been reached. + * + * 0 = Arrived at the target colour. + * 1 = Not arrived at the target colour. + * */ + int red=1, green=1, blue=1; + + /* Random selection of a new target + * colour */ + + target_colour.red=rand()%MAX_COL; + target_colour.green=rand()%MAX_COL; + target_colour.blue=rand()%MAX_COL; + + /* Calculate the direction to go in + * to reach the new target colour. */ + + red_inc = ( target_colour.red > colour.red ) ? INC : INC * -1; + green_inc = ( target_colour.green > colour.green) ? INC : INC * -1; + blue_inc = ( target_colour.blue > colour.blue ) ? INC : INC * -1; + + + /* Loop until all three colours have + * reached their required value. */ + + while(red || green || blue) + { + /* Change the colour of the root window */ + + change_colour(display, root, colormap, colour); + + /* Increment onto the next colour. */ + + if ( red=reached_target(colour.red, target_colour.red)) + colour.red += red_inc; + if (green=reached_target(colour.green, target_colour.green)) + colour.green += green_inc; + if ( blue=reached_target(colour.blue, target_colour.blue)) + colour.blue += blue_inc; + + sleep(seconds); /* Pause...... */ + + } + + } + + XCloseDisplay(display); + } + +/************************************************************************/ + +int reached_target( unsigned short colour, unsigned short target_colour) + { + return (( colour >= target_colour-INC && colour <= target_colour+INC) ?0:1); + } + +/************************************************************************/ + +void change_colour(Display * display, + Window root, + Colormap colormap, + XColor colour) + { + /* Reserve a cell in the colour map */ + + XAllocColorCells(display, colormap, False, NULL, 0, &colour.pixel, 1); + + /* Place the required colour in the map.*/ + + XStoreColor(display, colormap, &colour); + + /* Free the cell so it can be reused. */ + + XFreeColors(display, colormap, &colour.pixel, 1, 0); + + /* Set the root window colour. */ + + XSetWindowBackground(display, root, colour.pixel); + + /* Refresh the root window (with the new + * colour). */ + + XClearWindow(display, root); + + } + +/************************************************************************/ + +void help(char * progname) + { + + printf("\n%s information\n\n", progname); + + puts(" This program randomly changes the color of the screen background."); + puts("\n Syntax:\n"); + + printf("\t%s \tRun the program with with a default update time\n", progname); + printf("\t\t \tof %d seconds.\n", SECONDS); + printf("\t%s 3\tRun the program specifing the delay between updates.\n", progname); + printf("\t%s -h\tHelp. you are reading it.\n\n", progname); + } diff --git a/reference/C/X_EXAMPLES/xxterm.c b/reference/C/X_EXAMPLES/xxterm.c new file mode 100644 index 0000000..366337c --- /dev/null +++ b/reference/C/X_EXAMPLES/xxterm.c @@ -0,0 +1,615 @@ +/*********************************************************************** + * Purpose: To provide a tool that allows people to login to machines. + * + * Compile: Edit BUTTONS - Number of machines. + * Edit XTERM - Location of the xterm command. + * Edit 'machines' - Names of the machines. + * + * Compile command for Linux and Sun + * + * gcc xxterm.c -o xxterm -lX11 + * User notes: + * This is only of use to people running UNIX boxes on a LAN. + * + * History: + * + * Rev Date Author Comments. + * --- ---- ------ --------- + * 1.0 30-May-95 MJL Inital Release. + */ +/****************** Includes ********************************************/ + /* These are in /usr/X386 */ +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <X11/Xos.h> + +#include <stdio.h> +#include <unistd.h> /* setuid */ + +/****************** Defines *********************************************/ + +#define BUTTONS 7 /* <<<<<--- number of machines. */ + + /* VVVVV--- Location of the xterm comnd */ +#define XTERM "/usr/X11R5/bin/xterm -sb -e rlogin" + + /* window background colour */ +#define BACKGROUND_COLOUR "light grey" +#define BUTTON_COLOUR "blue" + +#define DOWN "down" +#define ACTIVE "active" + +/****************** Global Variables ************************************/ + +Display *display; +int screen; +Colormap colormap; + /* <<<<<---- Machines you want to access */ +char * machines[] = { + "marin", + "xarque", + "dragon", + "saturn", + "sentinel", + "silver", + "sirius" + }; + +/****************** Structures ******************************************/ + /* Hold the co-ordinates of the buttons */ +struct { + XPoint topleft; + XPoint topright; + XPoint botleft; + XPoint botright; + } buttons[BUTTONS+1]; + + +struct window_info + { + Window win; + GC gc; + }; + +/****************** Functions *******************************************/ + +void init_buttons(char *button_caps[]); + +void draw_image (Window, GC *, char *button_caps[]); + +int draw_button + (Window, + GC *gc, + char *text, /* Text to put on screen button cap */ + int x, int y, /* Position of button in window */ + int width, int height, + int, + char button_caps[]); + /* Change the colour in the graphics + * context. + */ +void set_colour (GC *gc, char *, Colormap); + +int where_am_i (Window, GC *gc); + + /* Take an action based on the + * button ID. + */ +int process_button + (Window win, + GC *gc, + char *button_caps[], + int button); /* Button ID. */ + +void press_button + (Window, + GC *gc, + char *button_caps[], + char *text ); + +struct window_info create_window + (int x, /* Window size */ + int y); + + /* Execute system commands */ +void execute_command + (int root, /* 1 == must be run by root + * 0 == Can be run by anyone */ + char *command, /* Command */ + char *machine); + +/************************************************************************/ + +main() + { + unsigned int width, height; /* Size of the window. */ + int x=0, y=0; /* x is across, y is down! */ + unsigned int border_width=4; /* Window border. */ + + /* Array of pointers, one for each screen + * button, they point to a string constant + * describing their status, active, down, + * inactive + */ + char *button_caps[BUTTONS+1]; + + struct window_info window; + + Window win; + GC gc; + XEvent report; + XFontStruct *font_info; + XColor colour; + + char * display_name=NULL; + + /********************************************************************* + * + * Setup the window environment + * + *********************************************************************/ + + /* Connect to X display server. */ + display=XOpenDisplay(display_name); + + /* Get screen ID */ + screen=DefaultScreen(display); + + /* Load the default colour map */ + colormap = DefaultColormap(display, screen); + + /* Create the new window with the same + attributes as the parent. */ + /* Put the info window on the screen */ + width = 90; height = (BUTTONS+1)* 30 +15+5; + window=create_window(width, height); + win = window.win; + gc = window.gc; + +/************************************************************************ + * + * Window environment has been setup. + * + * We must now define the attributes required by the graphics that + * will be placed inside the window. + * + ************************************************************************/ + + { + int exit_prog=1; + + /* Initalize the screen buttons */ + init_buttons(button_caps); + + /* Will stop looping when the 'exit' button + * is pressed. + */ + while (exit_prog) + { + /* Wait for an event.... + These are documented in Xlib Programming + Manual Volume 1 P.223 */ + XNextEvent(display, &report); + + switch (report.type) + { + /* drawing can only be done on an 'Expose' + event */ + + case Expose: /* Event No. ? */ + { + /* Redraw the whole screen. */ + draw_image(win, &gc, button_caps); + break; + } + case ButtonPress: /* Event No. 4 */ + { + int button; + /* Act on a mouse button press. If the 'exit' + * screen button has been pressed, 'exit_prog' + * will be set to 0. + */ + button=where_am_i(win, &gc); + process_button(win, &gc, button_caps, button); + + /* Test for exit. */ + + if ( button == BUTTONS) exit_prog=0; + + break; + } + case KeyPress: /* Event No. 2 */ + { + break; /* Not realy interested.... */ + } + case 22: /* Event No. 22 */ + { + break; /* Window moved, i think... */ + } + default: + { + printf ("Unexpected Event occoured in xxterm window. Event No. is %i\n", + report.type); + break; + } + } + } + } + } +/************************************************************************ + * + * root == 1 Command can only be executed by root + * root >= 0 Command can be executed by anyone. + * + ************************************************************************/ +void execute_command(int root, char *command, char *machine) + { + char full_cmd[100]; + /* Q. Does this command 'root' authority*/ + if (root) + { + if (getuid()) + { + printf("You are not authorised to execute this command\n"); + return; + } + } + strcpy( full_cmd, command); + strcat( full_cmd, " "); + strcat( full_cmd, machine); + strcat( full_cmd, " &"); + system(full_cmd); + } +/************************************************************************ + * + * + * + * + * + ************************************************************************/ + +int process_button (Window win, GC *gc, char *button_caps[], int button) + { + + /* locate the button the pointer is in */ + if (button >= 0 && button < BUTTONS) + { + + button_caps[button] = DOWN; + press_button(win, gc, button_caps, " " ); + + execute_command(0, XTERM, machines[button]); + + sleep(1); + + button_caps[button] = ACTIVE; + press_button(win, gc, button_caps, " " ); + + } + + /* Check for exit */ + if ( button == BUTTONS) + { + button_caps[button] = DOWN; + press_button(win, gc, button_caps, " " ); + + sleep(1); + + button_caps[button] = ACTIVE; + press_button(win, gc, button_caps, " " ); + + } + return (1); + } + +/****************** Build an image onto the window **********************/ + +void draw_image (Window win, GC *gc, char *button_caps[]) + { + int i, x; + /* Build the screen buttons + */ + + /* Button states are: + * active (up) + * down + * inactive + */ + for (i=0, x=15; i< BUTTONS; i++, x+=30) + { + /* Draw_box parms are: + * Graphic Context + * | Text on the button + * | | x indent from left side + * | | | y indent from top + * | | | | width + * | | | | | height + * V V V V V V + */ + draw_button(win, gc, machines[i], 15, x, 60, 20, i, button_caps[i]) ; + } + draw_button(win, gc, "Exit" , 15, x, 60, 20, i, button_caps[i]) ; + + } +/****************** Draw button with text in it ************************* + * + * Draw a button with texted on its cap. + * + * win Window ID + * gc Graphics context. + * text text to put in the box. + * x,y top left hand corner of the box. x is across the screen + * width + * height + * box identifing number. + * button_state state of screen button, active, inactive or down + * + ************************************************************************/ + +draw_button(Window win, GC *gc, char *text, int x, int y, + int width, int height, int box, + char button_cap[]) + { + + /* variables to hold the colour names. + ****************************************/ + char top_left_col[80]; /* button shading */ + char bottom_right_col[80]; /* more button shading. */ + char text_col[80]; /* Text on button. */ + + int yfudge=height-5; /* Text location */ + int xfudge=x+6; + +struct { + XPoint p; + } points[6]; + + int thickness=2; /* Thickness of the button edge. */ + + /* Co-ordinates for the inner box. */ + int xinner=x+thickness; + int yinner=y+thickness; + int hinner=height-(thickness*2); + int winner=width-(thickness*2); + + /* Set colours for an "active" button */ + if (!strcmp(button_cap, ACTIVE)) + { + strcpy(top_left_col, "white"); + strcpy(bottom_right_col, "slategrey"); + } + + /* Set colours for a "down" button + * the button has been pressed. + */ + if (!strcmp(button_cap, DOWN)) + { + strcpy(top_left_col, "slategrey"); + strcpy(bottom_right_col, "white"); + } + + + /* set the border colour. */ + + set_colour(gc, top_left_col, colormap); + + /* Top Left border */ + + points[0].p.x=x; points[0].p.y=y; + points[1].p.x=x+width; points[1].p.y=y; + points[2].p.x=xinner+winner; points[2].p.y=yinner; + points[3].p.x=xinner; points[3].p.y=yinner; + points[4].p.x=xinner; points[4].p.y=yinner+hinner; + points[5].p.x=x; points[5].p.y=y+height; + + XFillPolygon( + display, + win, + *gc, + points, + 6, + Nonconvex, + CoordModeOrigin); + + /* set the border colour. */ + set_colour(gc, bottom_right_col, colormap); + + /* Bottom right */ + points[0].p.x=x; points[0].p.y=y+height; + points[1].p.x=xinner; points[1].p.y=yinner+hinner; + points[2].p.x=xinner+winner; points[2].p.y=yinner+hinner; + points[3].p.x=xinner+winner; points[3].p.y=yinner; + points[4].p.x=x+width; points[4].p.y=y; + points[5].p.x=x+width; points[5].p.y=y+height; + + XFillPolygon( + display, + win, + *gc, + points, + 6, + Nonconvex, + CoordModeOrigin); + + /* set the text colour. */ + + set_colour(gc, BUTTON_COLOUR, colormap); + + /* draw the text that will be on the screen + * button cap. + */ + + XDrawString (display, win, *gc, + xfudge, y+yfudge, /* Bottom left of text */ + text, + strlen(text)); + + /* Store the button location */ + + buttons[box].topleft.x=x; buttons[box].topleft.y=y; + buttons[box].topright.x=x+width; buttons[box].topright.y=y; + buttons[box].botright.x=x+width; buttons[box].botright.y=y+height; + buttons[box].botleft.x=x; buttons[box].botleft.y=y+height; + + } + +/************************************************************************ + * + * Returns + * -1 == Not on a screen button or the screen button is not active + * ge 0 == Button number. + * + ************************************************************************/ +int where_am_i(Window win, GC *gc) + { + + Window root, child; + int root_x, root_y; /* Cursor location on the screen. */ + int win_x, win_y; /* Cursor location in the window. */ + int mask; + int inc; + int button; + + /* Get pointer location on the screen + * and within the window from the top left + * corner. + * x left to right. + * y top to bottom. + */ + XQueryPointer( display, win, + &root, &child, + &root_x, &root_y, + &win_x, &win_y, + &mask); + + /* win_x and win_y give the usefull position + * within the window. + */ + + /* Scan through each of the button positions + * and see if the pointer is in one of them + */ + button=-1; + for (inc = 0 ; inc <= BUTTONS && button == -1; inc++) + { + if ( win_x > buttons[inc].topleft.x && win_x < buttons[inc].topright.x + && win_y > buttons[inc].topleft.y && win_y < buttons[inc].botleft.y) + { + button = inc; /* Store the button ID. */ + } + } + + return(button); + } + +/************************************************************************ + * + * press - status of button then we start the routine. + * release - Status of button when we exit the routine (active/inactive) + * + ************************************************************************/ +void press_button(Window win, GC *gc, char *button_caps[], char *text ) + { + + draw_image(win, gc, button_caps); /* redraw all the buttons */ + } +/************************************************************************ + * + * Change the colour of any graphics that are drawn after this + * function has been called. + * + * colour - Name of the colour to change to. + * + * For a list of valid colour names: + * Use the Unix command 'showrgb' + * or look in /usr/lib/X11/rgb + * or on Suns you can try the unix command 'xco'. + * + ************************************************************************/ +void set_colour (GC *gc, char * colour, Colormap colormap) + { + XColor xcolour; + /* Convert the Colour name into RGB values. + */ + XParseColor(display, colormap, colour, &xcolour); + /* Convert the RGB values into a pixel value. + */ + XAllocColor(display, colormap, &xcolour); + /* Use the pixel value to set the foreground + * colour. + */ + XSetForeground(display, *gc, xcolour.pixel); + } + +/************************************************************************ + * + * Initalise the screen buttons. + * + ************************************************************************/ +void init_buttons(char *button_caps[]) + { + int i; + + for (i=0; i <= BUTTONS; i++) button_caps[i] = ACTIVE; + + } +/************************************************************************ + * + * Put a window on the screen. + * + * x & y are the size of the window. + * + ************************************************************************/ +struct window_info create_window(int x, int y) + { + struct window_info window; + XColor colour; + + + /* Build background colour + * XParseColor gets rgb values for the named + * colour, then XAllocColor gets the pixel + * value from the rgb values. + */ + XParseColor(display, colormap, BACKGROUND_COLOUR, &colour); + XAllocColor(display, colormap, &colour); + + /* Create the new window with the same + attributes as the parent. */ + window.win = XCreateSimpleWindow(display, + RootWindow(display, screen), + 0, 0, /* Position */ + x, y, /* Size */ + 4, + WhitePixel(display, screen), /* Window Border color */ + colour.pixel); /* Window Background color */ + + /* Select the event types we want the + * window to respond to. + * XSelectInput(display, + */ + XSelectInput(display, + window.win, + ExposureMask | + KeyPressMask | + ButtonPressMask | + StructureNotifyMask ); + + + /* Make window visable - this does not + actually make the window visable + until we start looking for 'events' */ + XMapWindow (display, window.win); + + /* Create a 'Graphics Context' used to + hold common attributes requires by + graphic images, for example colour and + line thickness. */ + window.gc = XCreateGC(display, + RootWindow(display, screen), + 0, + NULL); + + return window; + } |