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tools: add support for tablet relative events to the event-gui

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Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Jason Gerecke <jason.gerecke@wacom.com>
This commit is contained in:
Peter Hutterer 2016-01-12 16:39:15 +10:00
parent 7164d6eff5
commit 7899a6cf8d
1 changed files with 49 additions and 0 deletions
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49
tools/event-gui.c
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@ -51,6 +51,10 @@ struct touch {
int x, y;
};
struct point {
double x, y;
};
struct window {
GtkWidget *win;
GtkWidget *area;
@ -93,6 +97,12 @@ struct window {
double pressure;
double distance;
double tilt_x, tilt_y;
/* these are for the delta coordinates, but they're not
* deltas, theyconverted into
* abs positions */
size_t ndeltas;
struct point deltas[64];
} tool;
struct libinput_device *devices[50];
@ -128,6 +138,8 @@ draw(GtkWidget *widget, cairo_t *cr, gpointer data)
struct window *w = data;
struct touch *t;
int i, offset;
int first, last, mask;
double x, y;
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_rectangle(cr, 0, 0, w->width, w->height);
@ -261,6 +273,26 @@ draw(GtkWidget *widget, cairo_t *cr, gpointer data)
cairo_fill(cr);
cairo_restore(cr);
/* tablet deltas */
mask = ARRAY_LENGTH(w->tool.deltas);
first = max(w->tool.ndeltas + 1, mask) - mask;
last = w->tool.ndeltas;
cairo_save(cr);
cairo_set_source_rgb(cr, .8, .8, .2);
x = w->tool.deltas[first % mask].x;
y = w->tool.deltas[first % mask].y;
cairo_move_to(cr, x, y);
for (i = first + 1; i < last; i++) {
x = w->tool.deltas[i % mask].x;
y = w->tool.deltas[i % mask].y;
cairo_line_to(cr, x, y);
}
cairo_stroke(cr);
return TRUE;
}
@ -601,6 +633,9 @@ handle_event_tablet(struct libinput_event *ev, struct window *w)
{
struct libinput_event_tablet_tool *t = libinput_event_get_tablet_tool_event(ev);
double x, y;
struct point point;
int idx;
const int mask = ARRAY_LENGTH(w->tool.deltas);
x = libinput_event_tablet_tool_get_x_transformed(t, w->width);
y = libinput_event_tablet_tool_get_y_transformed(t, w->height);
@ -618,6 +653,9 @@ handle_event_tablet(struct libinput_event *ev, struct window *w)
} else {
w->tool.x_in = x;
w->tool.y_in = y;
w->tool.ndeltas = 0;
w->tool.deltas[0].x = w->width/2;
w->tool.deltas[0].y = w->height/2;
}
break;
case LIBINPUT_EVENT_TABLET_TOOL_TIP:
@ -641,6 +679,17 @@ handle_event_tablet(struct libinput_event *ev, struct window *w)
w->tool.distance = libinput_event_tablet_tool_get_distance(t);
w->tool.tilt_x = libinput_event_tablet_tool_get_tilt_x(t);
w->tool.tilt_y = libinput_event_tablet_tool_get_tilt_y(t);
/* Add the delta to the last position and store them as abs
* coordinates */
idx = w->tool.ndeltas % mask;
point = w->tool.deltas[idx];
idx = (w->tool.ndeltas + 1) % mask;
point.x += libinput_event_tablet_tool_get_dx(t);
point.y += libinput_event_tablet_tool_get_dy(t);
w->tool.deltas[idx] = point;
w->tool.ndeltas++;
break;
case LIBINPUT_EVENT_TABLET_TOOL_BUTTON:
break;