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dockapps/wmMatrix/xutils.c
Alexey I. Froloff 18524ce06f Better select(2) usage
2012-08-14 14:12:24 +01:00

400 lines
10 KiB
C
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/*
* xutils.c - A collection of X-windows utilties for creating WindowMAker
* DockApps.
*
* This file contains alot of the lower-level X windows routines. Origins with wmppp
* (by Martijn Pieterse (pieterse@xs4all.nl)), but its been hacked up quite a bit
* and passed on from one new DockApp to the next.
*
*
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
*
*
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <ctype.h>
#include <stdarg.h>
#include <X11/Xlib.h>
#include <X11/xpm.h>
#include <X11/extensions/shape.h>
#include <sys/time.h>
#include <sys/select.h>
#include "xutils.h"
/*
* X11 Variables
*/
int x_fd;
XSizeHints mysizehints;
XWMHints mywmhints;
Pixel back_pix, fore_pix;
char *Geometry = "";
GC NormalGC;
GC EraseGC;
XpmIcon wmgen;
Pixmap pixmask;
/*
* Colors for wmCalClock
*/
extern char TimeColor[30];
extern char BackgroundColor[30];
/*
* flush_expose
*/
static int flush_expose(Window w) {
XEvent dummy;
int i=0;
while (XCheckTypedWindowEvent(display, w, Expose, &dummy))
i++;
return i;
}
/*
* RedrawWindow
* RedrawWindowXY
*/
void RedrawWindow(void) {
flush_expose(iconwin);
XCopyArea(display, wmgen.pixmap, iconwin, NormalGC, 0,0, wmgen.attributes.width, wmgen.attributes.height, 0, 0);
flush_expose(win);
XCopyArea(display, wmgen.pixmap, win, NormalGC, 0,0, wmgen.attributes.width, wmgen.attributes.height, 0, 0);
}
void RedrawWindowXY(int x, int y) {
flush_expose(iconwin);
XCopyArea(display, wmgen.pixmap, iconwin, NormalGC, x,y, wmgen.attributes.width, wmgen.attributes.height, 0, 0);
flush_expose(win);
XCopyArea(display, wmgen.pixmap, win, NormalGC, x,y, wmgen.attributes.width, wmgen.attributes.height, 0, 0);
}
/*
* copyXPMArea
* copyXBMArea
*/
void copyXPMArea(int x, int y, int sx, int sy, int dx, int dy) {
XCopyArea(display, wmgen.pixmap, wmgen.pixmap, NormalGC, x, y, sx, sy, dx, dy);
}
void copyXBMArea(int x, int y, int sx, int sy, int dx, int dy) {
XCopyArea(display, wmgen.mask, wmgen.pixmap, NormalGC, x, y, sx, sy, dx, dy);
}
/*
* initXwindow
*/
void initXwindow(int argc, char *argv[]){
int i;
char *display_name = NULL;
for (i=1; argv[i]; ++i) {
if (!strcmp(argv[i], "-display")) display_name = argv[i+1];
}
if (!(display = XOpenDisplay(display_name))) {
fprintf(stderr, "%s: can't open display %s\n",
argv[0], XDisplayName(display_name));
exit(1);
}
screen = DefaultScreen(display);
Root = RootWindow(display, screen);
DisplayDepth = DefaultDepth(display, screen);
x_fd = XConnectionNumber(display);
}
/*
* openXwindow
*/
void openXwindow(int argc, char *argv[], char *pixmap_bytes[], char *pixmask_bits,
int pixmask_width, int pixmask_height) {
unsigned int borderwidth = 1;
XClassHint classHint;
char *wname = argv[0];
XTextProperty name;
XGCValues gcv;
unsigned long gcm;
int dummy=0, red, grn, blu;
XpmColorSymbol cols[10]={ {"Back", NULL, 0},
{"Color1", NULL, 0},
{"Color2", NULL, 0},
{"Color3", NULL, 0},
{"Color4", NULL, 0},
{"Color5", NULL, 0},
{"Color6", NULL, 0},
{"Color7", NULL, 0},
{"Color8", NULL, 0},
{"Color9", NULL, 0}};
/*
* Create Pixmap
*/
cols[0].pixel = getColor(BackgroundColor, 1.0000, &red, &grn, &blu);
cols[1].pixel = getBlendedColor(TimeColor, 0.1522, red, grn, blu);
cols[2].pixel = getBlendedColor(TimeColor, 0.2602, red, grn, blu);
cols[3].pixel = getBlendedColor(TimeColor, 0.3761, red, grn, blu);
cols[4].pixel = getBlendedColor(TimeColor, 0.4841, red, grn, blu);
cols[5].pixel = getBlendedColor(TimeColor, 0.5922, red, grn, blu);
cols[6].pixel = getBlendedColor(TimeColor, 0.6980, red, grn, blu);
cols[7].pixel = getBlendedColor(TimeColor, 0.7961, red, grn, blu);
cols[8].pixel = getBlendedColor(TimeColor, 0.8941, red, grn, blu);
cols[9].pixel = getBlendedColor(TimeColor, 1.0000, red, grn, blu);
wmgen.attributes.numsymbols = 10;
wmgen.attributes.colorsymbols = cols;
wmgen.attributes.exactColors = False;
wmgen.attributes.closeness = 40000;
wmgen.attributes.valuemask = XpmReturnPixels | XpmReturnExtensions | XpmColorSymbols
| XpmExactColors | XpmCloseness | XpmSize;
if (XpmCreatePixmapFromData(display, Root, pixmap_bytes,
&(wmgen.pixmap), &(wmgen.mask), &(wmgen.attributes)) != XpmSuccess){
fprintf(stderr, "Not enough free colorcells.\n");
exit(1);
}
/*
* Create a window
*/
mysizehints.flags = USSize | USPosition;
mysizehints.x = 0;
mysizehints.y = 0;
back_pix = getColor("black", 1.0, &red, &grn, &blu);
fore_pix = getColor("white", 1.0, &red, &grn, &blu);
XWMGeometry(display, screen, Geometry, NULL, borderwidth, &mysizehints,
&mysizehints.x, &mysizehints.y,&mysizehints.width,&mysizehints.height, &dummy);
mysizehints.width = 64;
mysizehints.height = 64;
win = XCreateSimpleWindow(display, Root, mysizehints.x, mysizehints.y,
mysizehints.width, mysizehints.height, borderwidth, fore_pix, back_pix);
iconwin = XCreateSimpleWindow(display, win, mysizehints.x, mysizehints.y,
mysizehints.width, mysizehints.height, borderwidth, fore_pix, back_pix);
/*
* Activate hints
*/
XSetWMNormalHints(display, win, &mysizehints);
classHint.res_name = wname;
classHint.res_class = wname;
XSetClassHint(display, win, &classHint);
/*
* Set up the xevents that you want the relevent windows to inherit
* Currently, its seems that setting KeyPress events here has no
* effect. I.e. for some you will need to Grab the focus and then return
* it after you are done...
*/
XSelectInput(display, win, ButtonPressMask | ExposureMask | ButtonReleaseMask
| PointerMotionMask | StructureNotifyMask | EnterWindowMask | LeaveWindowMask
| KeyPressMask | KeyReleaseMask);
XSelectInput(display, iconwin, ButtonPressMask | ExposureMask | ButtonReleaseMask
| PointerMotionMask | StructureNotifyMask | EnterWindowMask | LeaveWindowMask
| KeyPressMask | KeyReleaseMask);
if (XStringListToTextProperty(&wname, 1, &name) == 0) {
fprintf(stderr, "%s: can't allocate window name\n", wname);
exit(1);
}
XSetWMName(display, win, &name);
/*
* Create Graphics Context (GC) for drawing
*/
gcm = GCForeground | GCBackground | GCGraphicsExposures;
gcv.foreground = fore_pix;
gcv.background = back_pix;
gcv.graphics_exposures = 0;
NormalGC = XCreateGC(display, Root, gcm, &gcv);
/*
* Create Graphics Context (GC) for erasing
*/
gcm = GCForeground | GCBackground | GCGraphicsExposures;
gcv.foreground = back_pix;
gcv.background = back_pix;
gcv.graphics_exposures = 0;
EraseGC = XCreateGC(display, Root, gcm, &gcv);
pixmask = XCreateBitmapFromData(display, win, pixmask_bits, pixmask_width, pixmask_height);
XShapeCombineMask(display, win, ShapeBounding, 0, 0, pixmask, ShapeSet);
XShapeCombineMask(display, iconwin, ShapeBounding, 0, 0, pixmask, ShapeSet);
mywmhints.initial_state = WithdrawnState;
mywmhints.icon_window = iconwin;
mywmhints.icon_x = mysizehints.x;
mywmhints.icon_y = mysizehints.y;
mywmhints.window_group = win;
mywmhints.flags = StateHint | IconWindowHint | IconPositionHint | WindowGroupHint;
XSetWMHints(display, win, &mywmhints);
XSetCommand(display, win, argv, argc);
XMapWindow(display, win);
}
unsigned long getColor(char *ColorName, float fac, int *red, int *grn, int *blu) {
XColor Color;
XWindowAttributes Attributes;
XGetWindowAttributes(display, Root, &Attributes);
Color.pixel = 0;
XParseColor(display, Attributes.colormap, ColorName, &Color);
Color.red = (unsigned short)(fac*(Color.red-24) + 24);
Color.blue = (unsigned short)(fac*(Color.blue-24) + 24);
Color.green = (unsigned short)(fac*(Color.green-24) + 24);
Color.flags = DoRed | DoGreen | DoBlue;
XAllocColor(display, Attributes.colormap, &Color);
*red = Color.red;
*grn = Color.green;
*blu = Color.blue;
return Color.pixel;
}
unsigned long getBlendedColor(char *ColorName, float fac, int red, int grn, int blu) {
XColor Color;
XWindowAttributes Attributes;
XGetWindowAttributes(display, Root, &Attributes);
Color.pixel = 0;
XParseColor(display, Attributes.colormap, ColorName, &Color);
Color.red = (unsigned short)(fac*(Color.red-red) + red);
Color.blue = (unsigned short)(fac*(Color.blue-grn) + grn);
Color.green = (unsigned short)(fac*(Color.green-blu) + blu);
Color.flags = DoRed | DoGreen | DoBlue;
XAllocColor(display, Attributes.colormap, &Color);
return Color.pixel;
}
/*
* Here is a faster version of usleep using select()
*/
void uusleep(unsigned long usecs) {
struct timeval tv;
fd_set fds;
tv.tv_sec = usecs / 1000000UL;
tv.tv_usec = usecs % 1000000UL;
FD_ZERO(&fds);
FD_SET(x_fd, &fds);
select(x_fd + 1, &fds, NULL, NULL, &tv);
}
/*
* This version assumes the tv_sec value will be zero. I.e. the delay
* will be less than 1 second. This allows us to save on a div operation.
*
*/
void short_uusleep(unsigned long usecs) {
struct timeval tv;
fd_set fds;
tv.tv_sec = 0;
tv.tv_usec = usecs;
FD_ZERO(&fds);
FD_SET(x_fd, &fds);
select(x_fd + 1, &fds, NULL, NULL, &tv);
}
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