static gint
motion_notify_event (GtkWidget *widget, GdkEventMotion *event)
{
GdkTimeCoord **events;
int n_events;
int i;
current_device = event->device;
cursor_proximity = TRUE;
if (event->state & GDK_BUTTON1_MASK && pixmap != NULL)
{
if (gdk_device_get_history (event->device, event->window,
motion_time, event->time,
&events, &n_events))
{
for (i=0; i<n_events; i++)
{
double x = 0, y = 0, pressure = 0.5;
gdk_device_get_axis (event->device, events[i]->axes, GDK_AXIS_X, &x);
gdk_device_get_axis (event->device, events[i]->axes, GDK_AXIS_Y, &y);
gdk_device_get_axis (event->device, events[i]->axes, GDK_AXIS_PRESSURE, &pressure);
draw_brush (widget, event->device->source, x, y, pressure);
print_axes (event->device, events[i]->axes);
}
gdk_device_free_history (events, n_events);
}
else
{
double pressure = 0.5;
gdk_event_get_axis ((GdkEvent *)event, GDK_AXIS_PRESSURE, &pressure);
draw_brush (widget, event->device->source, event->x, event->y, pressure);
}
motion_time = event->time;
}
if (event->is_hint)
gdk_device_get_state (event->device, event->window, NULL, NULL);
print_axes (event->device, event->axes);
update_cursor (widget, event->x, event->y);
return TRUE;
}
static VALUE
device_get_history(VALUE self, VALUE window, VALUE start, VALUE stop)
{
gboolean ret;
GdkTimeCoord** events;
gint i, n_events;
VALUE ary = Qnil;
ret = gdk_device_get_history(_SELF(self),
GDK_WINDOW(RVAL2GOBJ(window)),
NUM2UINT(start), NUM2UINT(stop),
&events, &n_events);
if (ret){
ary = rb_ary_new();
for (i = 0; i < n_events; i++){
rb_ary_push(ary, BOXED2RVAL(events, GDK_TYPE_TIME_COORD));
}
gdk_device_free_history(events, n_events);
}
return ary;
}
static gboolean
motion_notify_event (GtkWidget *widget,
GdkEventMotion *event,
ColorselWater *water)
{
GtkAllocation allocation;
GdkTimeCoord **coords;
gint nevents;
gint i;
gboolean erase;
gtk_widget_get_allocation (widget, &allocation);
if (event->state & (GDK_BUTTON1_MASK |
GDK_BUTTON2_MASK |
GDK_BUTTON3_MASK |
GDK_BUTTON4_MASK))
{
guint32 last_motion_time = event->time;
erase = ((event->state &
(GDK_BUTTON2_MASK | GDK_BUTTON3_MASK | GDK_BUTTON4_MASK)) ||
FALSE);
/* FIXME: (event->source == GDK_SOURCE_ERASER) */
if (event->state & GDK_SHIFT_MASK)
erase = !erase;
water->motion_time = event->time;
if (gdk_device_get_history (event->device,
event->window,
last_motion_time,
event->time,
&coords,
&nevents))
{
for (i = 0; i < nevents; i++)
{
gdouble x = 0.0;
gdouble y = 0.0;
gdouble pressure = 0.5;
gdk_device_get_axis (event->device, coords[i]->axes,
GDK_AXIS_X, &x);
gdk_device_get_axis (event->device, coords[i]->axes,
GDK_AXIS_Y, &y);
gdk_device_get_axis (event->device, coords[i]->axes,
GDK_AXIS_PRESSURE, &pressure);
draw_brush (water, widget, erase,
x / allocation.width,
y / allocation.height, pressure);
}
g_free (coords);
}
else
{
gdouble pressure = 0.5;
gdk_event_get_axis ((GdkEvent *) event, GDK_AXIS_PRESSURE, &pressure);
draw_brush (water, widget, erase,
event->x / allocation.width,
event->y / allocation.height, pressure);
}
}
/* Ask for more motion events in case the event was a hint */
gdk_event_request_motions (event);
return TRUE;
}
gboolean on_motion (GtkWidget *win,
GdkEventMotion *ev,
gpointer user_data)
{
GromitData *data = (GromitData *) user_data;
GdkTimeCoord **coords = NULL;
gint nevents;
int i;
gdouble pressure = 0.5;
/* get the data for this device */
GdkDevice *master = ev->device;
GromitDeviceData *masterdata =
g_hash_table_lookup(data->devdatatable, master);
if (!masterdata->is_grabbed)
return FALSE;
GdkDevice *slave =
gdk_event_get_source_device ((GdkEvent *) ev);
GromitDeviceData *slavedata =
g_hash_table_lookup(data->devdatatable, slave);
if (ev->state != masterdata->state ||
ev->state != slavedata->state ||
masterdata->lastslave != slave)
select_tool (data, master, slave, ev->state);
if(!(ev->state & (GDK_BUTTON1_MASK|
GDK_BUTTON2_MASK|
GDK_BUTTON3_MASK|
GDK_BUTTON4_MASK|
GDK_BUTTON5_MASK)))
return TRUE;
gdk_device_get_history (slave, ev->window,
slavedata->motion_time, ev->time,
&coords, &nevents);
if(!data->xinerama && nevents > 0)
{
for (i=0; i < nevents; i++)
{
gdouble x, y;
gdk_device_get_axis (slave, coords[i]->axes,
GDK_AXIS_PRESSURE, &pressure);
if (pressure > 0)
{
if (gdk_device_get_source(slave) == GDK_SOURCE_MOUSE)
data->maxwidth = slavedata->cur_context->width;
else
data->maxwidth = (CLAMP (pressure + line_thickener, 0, 1) *
(double) (slavedata->cur_context->width -
slavedata->cur_context->minwidth) +
slavedata->cur_context->minwidth);
gdk_device_get_axis(slave, coords[i]->axes,
GDK_AXIS_X, &x);
gdk_device_get_axis(slave, coords[i]->axes,
GDK_AXIS_Y, &y);
draw_line (data, slave, slavedata->lastx, slavedata->lasty, x, y);
coord_list_prepend (data, slave, x, y, data->maxwidth);
slavedata->lastx = x;
slavedata->lasty = y;
}
}
slavedata->motion_time = coords[nevents-1]->time;
g_free (coords);
}
/* always paint to the current event coordinate. */
gdk_event_get_axis ((GdkEvent *) ev, GDK_AXIS_PRESSURE, &pressure);
if (pressure > 0)
{
if (gdk_device_get_source(slave) == GDK_SOURCE_MOUSE)
data->maxwidth = slavedata->cur_context->width;
else
data->maxwidth = (CLAMP (pressure + line_thickener, 0, 1) *
(double) (slavedata->cur_context->width -
slavedata->cur_context->minwidth) +
slavedata->cur_context->minwidth);
if(slavedata->motion_time > 0)
{
draw_line (data, slave, slavedata->lastx, slavedata->lasty, ev->x, ev->y);
coord_list_prepend (data, slave, ev->x, ev->y, data->maxwidth);
}
}
slavedata->lastx = ev->x;
slavedata->lasty = ev->y;
slavedata->motion_time = ev->time;
return TRUE;
}
