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Simplify corner arcs in X11 code

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This commit is contained in:
Benedikt Heine 2018-05-28 02:13:27 +02:00 committed by Nikos Tsipinakis
parent d5fd674d2f
commit aab9fef78c
1 changed files with 22 additions and 39 deletions
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61
src/x11/x.c
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@ -81,18 +81,18 @@ static void x_win_move(window_x11 *win, int x, int y, int width, int height)
}
}
void x_win_round_corners(window_x11 *win, const int rad)
static void x_win_round_corners(window_x11 *win, const int rad)
{
const int width = win->dim.w;
const int height = win->dim.h;
const int dia = 2 * rad;
const int degrees = 64; // the factor to convert degrees to XFillArc's angle param
Pixmap mask = XCreatePixmap(xctx.dpy, win->xwin, width, height, 1);
XGCValues xgcv;
GC shape_gc = XCreateGC(xctx.dpy, mask, 0, &xgcv);
const int dia = 2 * rad;
XSetForeground(xctx.dpy, shape_gc, 0);
XFillRectangle(xctx.dpy,
mask,
@ -104,43 +104,26 @@ void x_win_round_corners(window_x11 *win, const int rad)
XSetForeground(xctx.dpy, shape_gc, 1);
XFillArc(xctx.dpy,
mask,
shape_gc,
0,
0,
dia,
dia,
0,
360 * 64);
XFillArc(xctx.dpy,
mask,
shape_gc,
width - dia - 1,
0,
dia,
dia,
0,
360 * 64);
XFillArc(xctx.dpy,
mask,
shape_gc,
0,
height - dia - 1,
dia,
dia,
0,
360 * 64);
XFillArc(xctx.dpy,
mask,
shape_gc,
width - dia - 1,
height - dia - 1,
dia,
dia,
0,
360 * 64);
/* To mark all pixels, which should get exposed, we
* use a circle for every corner and two overlapping rectangles */
unsigned const int centercoords[] = {
0, 0,
width - dia - 1, 0,
0, height - dia - 1,
width - dia - 1, height - dia - 1,
};
for (int i = 0; i < sizeof(centercoords)/sizeof(unsigned int); i = i+2) {
XFillArc(xctx.dpy,
mask,
shape_gc,
centercoords[i],
centercoords[i+1],
dia,
dia,
degrees * 0,
degrees * 360);
}
XFillRectangle(xctx.dpy,
mask,
shape_gc,