fdo-mirrors/libinput
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/libinput/libinput.git synced 2026-01-08 19:50:18 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

tools: draw some grids for positioning testing in the event-gui

Browse source 
Having a grid makes it easier to detect pointer jumps

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2016-04-19 11:04:26 +10:00
parent 9ebcc45345
commit 7da1e5fe9c
1 changed files with 42 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

42
tools/event-gui.c
View file

@ -315,6 +315,46 @@ draw_pointer(struct window *w, cairo_t *cr)
cairo_restore(cr);
}
static inline void
draw_background(struct window *w, cairo_t *cr)
{
int x1, x2, y1, y2, x3, y3, x4, y4;
int cols;
/* 10px and 5px grids */
cairo_save(cr);
cairo_set_source_rgb(cr, 0.8, 0.8, 0.8);
x1 = w->width/2 - 200;
y1 = w->height/2 - 200;
x2 = w->width/2 + 200;
y2 = w->height/2 - 200;
for (cols = 1; cols < 10; cols++) {
cairo_move_to(cr, x1 + 10 * cols, y1);
cairo_rel_line_to(cr, 0, 100);
cairo_move_to(cr, x1, y1 + 10 * cols);
cairo_rel_line_to(cr, 100, 0);
cairo_move_to(cr, x2 + 5 * cols, y2);
cairo_rel_line_to(cr, 0, 50);
cairo_move_to(cr, x2, y2 + 5 * cols);
cairo_rel_line_to(cr, 50, 0);
}
/* 3px horiz/vert bar codes */
x3 = w->width/2 - 200;
y3 = w->height/2 + 200;
x4 = w->width/2 + 200;
y4 = w->height/2 + 100;
for (cols = 0; cols < 50; cols++) {
cairo_move_to(cr, x3 + 3 * cols, y3);
cairo_rel_line_to(cr, 0, 20);
cairo_move_to(cr, x4, y4 + 3 * cols);
cairo_rel_line_to(cr, 20, 0);
}
cairo_stroke(cr);
}
static gboolean
draw(GtkWidget *widget, cairo_t *cr, gpointer data)
{
@ -324,6 +364,8 @@ draw(GtkWidget *widget, cairo_t *cr, gpointer data)
cairo_rectangle(cr, 0, 0, w->width, w->height);
cairo_fill(cr);
draw_background(w, cr);
draw_gestures(w, cr);
draw_scrollbars(w, cr);
draw_touchpoints(w, cr);