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test-pixmap: Draw something more interesting when the mouse is clicked

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When the mouse button is pressed it would previously draw a small
1-pixel wide fully transparent line to the pixmap. This is a useful
feature to help test the automatic updates but the line is quite hard
to see so it's to easy miss. This patch changes it to draw a thick
black circle. The circle is drawn at a different position every time
the button is clicked.
This commit is contained in:
Neil Roberts 2010-05-28 18:41:20 +01:00
parent 02de8b9ad5
commit c5b5a88d6d
1 changed files with 20 additions and 7 deletions
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19
tests/interactive/test-pixmap.c
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@ -71,16 +71,29 @@ stage_button_press_cb (ClutterActor *actor,
{
Pixmap pxm = (Pixmap)data;
Display *dpy = clutter_x11_get_default_display ();
GC gc;
static GC gc = None;
static int x = 100, y = 100;
if (gc == None)
{
XGCValues gc_values = { 0 };
gc_values.line_width = 12;
/* This is an attempt to get a black pixel will full
opacity. Seemingly the BlackPixel macro and the default GC
value are a fully transparent color */
gc_values.foreground = 0xff000000;
gc = XCreateGC (dpy,
pxm,
0,
GCLineWidth | GCForeground,
&gc_values);
}
XDrawLine (dpy, pxm, gc, 0, 0, 100, 100);
XDrawArc (dpy, pxm, gc, x, y, 100, 100, 0, 360 * 64);
x -= 5;
y -= 5;
return FALSE;
}