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Centre on the mouse hotspot better

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Use xhot and yhot to better get the "mouse hotspot". This should fix #15
pull/19/head
Martin Tournoij 4 years ago
parent a22d1d1f0d
commit 21d69a8223
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GPG Key ID: A6258419189EE585
2 changed files with 42 additions and 43 deletions
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10
find-cursor.1
Unescape Escape View File

@ -50,11 +50,11 @@ Maximum size the circle will grow to.
.TP
\fB-t\fR, \fB--transparent\fR
Make the window truly 'transparent'. This helps with some display issues when
following the cursor position, but it doesn't work well with all WMs, which is
why it's disabled by default.
following the cursor position, but it doesn't work well with all window
managers, which is why it's disabled by default.
.TP
\fB-w\fR, \fB--wait\fR \fI\,MICROSECONDS\/\fR
Time to wait before drawing the next circle.
\fB-w\fR, \fB--wait\fR \fI\,TIME\/\fR
Time to wait before drawing the next circle, in tenths of milliseconds.
.TP
\fB-r\fR, \fB--repeat\fR \fI\,N\/\fR
Number of times to repeat the animation. Use 0 to repeat indefinitely.
@ -78,7 +78,7 @@ find-cursor --repeat 0 --follow --distance 1 --wait 1 --line-width 16 --size 16
.PP
You will want to map a key in your window manager to run \fIfind-cursor\fR. You
can also use \fIxbindkeys\fR, which should work with $any window manager.
can also use \fIxbindkeys\fR, which should work with any window manager.
.PP
I run it with \fIxcape\fR:
.RS

75
find-cursor.c
Unescape Escape View File

@ -1,6 +1,6 @@
/*
* http://code.arp242.net/find-cursor
* Copyright © 2015-2017 Martin Tournoij <martin@arp242.net>
* Copyright © 2015-2020 Martin Tournoij <martin@arp242.net>
* See below for full copyright
*/
@ -22,8 +22,7 @@
void usage(char *name);
int parse_num(int ch, char *opt, char *name);
void draw(
char *name, Display *display, int screen,
void draw(char *name, Display *display, int screen,
int size, int distance, int wait, int line_width, char *color_name,
int follow, int transparent, int grow, int outline, int repeat);
@ -43,7 +42,9 @@ static struct option longopts[] = {
};
void usage(char *name) {
printf("Usage: %s [-stplcftgr]\n\n", name);
printf("Usage: %s [-stplcftgr]\n", name);
printf("\n");
printf("Flags:\n");
printf(" -h, --help Show this help.\n");
printf("\n");
printf("Shape options:\n");
@ -51,8 +52,8 @@ void usage(char *name) {
printf(" -d, --distance Distance between the circles in pixels.\n");
printf(" -l, --line-width Width of the lines in pixels.\n");
printf(" -w, --wait Time to wait before drawing the next circle in\n");
printf(" microseconds.\n");
printf(" -c, --color Color; can either be an X11 color name or RGB as hex.\n");
printf(" tenths of milliseconds.\n");
printf(" -c, --color Color as X11 color name or RGB (e.g. #ff0000)\n");
printf(" -g, --grow Grow the animation in size, rather than shrinking it.\n");
printf("\n");
printf("Extra options:\n");
@ -68,12 +69,11 @@ void usage(char *name) {
printf("\n");
printf("Examples:\n");
printf(" The defaults:\n");
printf(" %s --size 320 --distance 40 --wait 400 --line-width 4 --color black\n\n", name);
printf(" %s --size 320 --distance 40 --wait 400 --line-width 4 --color black\n\n", name);
printf(" Draw a solid circle:\n");
printf(" %s --size 100 --distance 1 --wait 20 --line-width 1\n\n", name);
printf(" %s --size 100 --distance 1 --wait 20 --line-width 1\n\n", name);
printf(" Always draw a full circle on top of the cursor:\n");
printf(" %s --repeat 0 --follow --distance 1 --wait 1 --line-width 16 --size 16", name);
printf("\n");
printf(" %s --repeat 0 --follow --distance 1 --wait 1 --line-width 16 --size 16\n", name);
}
// Parse number from commandline, or show error and exit if it's not a number.
@ -88,7 +88,6 @@ int parse_num(int ch, char *opt, char *name) {
return result;
}
int main(int argc, char* argv[]) {
// Parse options
int size = 320;
@ -166,22 +165,29 @@ int main(int argc, char* argv[]) {
}
// Actually draw.
do {
do
draw(argv[0], display, screen,
size, distance, wait, line_width, color_name,
follow, transparent, grow, outline, repeat);
} while (repeat == -1 || repeat--);
while (repeat == -1 || repeat--);
XCloseDisplay(display);
}
void draw(
char *name, Display *display, int screen,
// Try to get the centre of the cursor.
void cursor_center(Display *display, int size, int *x, int *y) {
XFixesCursorImage *c = XFixesGetCursorImage(display);
*x = c->x - size/2 - c->width/2 + c->xhot;
*y = c->y - size/2 - c->height/2 + c->yhot;
}
void draw(char *name, Display *display, int screen,
int size, int distance, int wait, int line_width, char *color_name,
int follow, int transparent, int grow, int outline, int repeat
) {
// Get the mouse cursor position and size.
XFixesCursorImage *cursor = XFixesGetCursorImage(display);
int center_x, center_y;
cursor_center(display, size, &center_x, &center_y);
// Create a window at the mouse position
Window window;
@ -194,8 +200,8 @@ void draw(
window_attr.colormap = XCreateColormap(display, DefaultRootWindow(display), vinfo.visual, AllocNone);
window_attr.background_pixel = 0;
window = XCreateWindow(display, XRootWindow(display, screen),
cursor->x - size/2 - cursor->width/2, // x position
cursor->y - size/2 - cursor->height/2, // y position
center_x, // x position
center_y, // y position
size, size, // width, height
4, // border width
vinfo.depth, // depth
@ -204,10 +210,10 @@ void draw(
CWColormap | CWBorderPixel | CWBackPixel | CWOverrideRedirect, // valuemask
&window_attr); // attributes
}
else {
else
window = XCreateWindow(display, XRootWindow(display, screen),
cursor->x - size/2 - cursor->width/2, // x position
cursor->y - size/2 - cursor->height/2, // y position
center_x, // x position
center_y, // y position
size, size, // width, height
4, // border width
DefaultDepth(display, screen), // depth
@ -215,7 +221,6 @@ void draw(
DefaultVisual(display, screen), // visual
CWOverrideRedirect, // valuemask
&window_attr); // attributes
}
// Make round shaped window.
XGCValues xgcv;
@ -229,8 +234,8 @@ void draw(
size, size, // Size
0, 360 * 64); // Make it a full circle
XShapeCombineMask(display, window, ShapeBounding, 0,0, shape_mask, ShapeSet);
XShapeCombineMask(display, window, ShapeClip, 0,0, shape_mask, ShapeSet);
XShapeCombineMask(display, window, ShapeBounding, 0, 0, shape_mask, ShapeSet);
XShapeCombineMask(display, window, ShapeClip, 0, 0, shape_mask, ShapeSet);
XFreePixmap(display, shape_mask);
// Input region is small so we can pass input events.
@ -288,9 +293,10 @@ void draw(
color2.red = 65535 - color.red;
color2.green = 65535 - color.green;
color2.blue = 65535 - color.blue;
sprintf(color2_name,"#%04X%04X%04X", color2.red,color2.green, color2.blue);
sprintf(color2_name, "#%04X%04X%04X", color2.red, color2.green, color2.blue);
XAllocNamedColor(display, colormap, color2_name, &color2, &color2);
} else {
}
else {
// Set colour only once if not outline.
XSetLineAttributes(display, gc, line_width, LineSolid, CapButt, JoinBevel);
XSetForeground(display, gc, color.pixel);
@ -299,15 +305,10 @@ void draw(
// Draw the circles
int i = 1;
for (i=1; i<=size; i+=distance) {
if (follow) {
if (follow)
XClearWindow(display, window);
}
int cs;
if (grow)
cs = i;
else
cs = size - i;
int cs = grow ? i : size - i;
if (outline) {
XSetLineAttributes(display, gc, line_width+2, LineSolid, CapButt, JoinBevel);
@ -328,10 +329,8 @@ void draw(
0, 360 * 64); // Make it a full circle
if (follow) {
XFixesCursorImage *cursor = XFixesGetCursorImage(display);
XMoveWindow(display, window,
cursor->x - size/2 - cursor->width/2,
cursor->y - size/2 - cursor->height/2);
cursor_center(display, size, &center_x, &center_y);
XMoveWindow(display, window, center_x, center_y);
}
XSync(display, False);
@ -346,7 +345,7 @@ void draw(
/*
* The MIT License (MIT)
*
* Copyright © 2015-2017 Martin Tournoij
* Copyright © 2015-2020 Martin Tournoij
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to

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