void on_monitors_changed ( GdkScreen *screen,
gpointer user_data)
{
GromitData *data = (GromitData *) user_data;
if(data->debug)
g_printerr("DEBUG: screen size changed!\n");
// get new sizes
data->width = gdk_screen_get_width (data->screen);
data->height = gdk_screen_get_height (data->screen);
// change size
gtk_widget_set_size_request(GTK_WIDGET(data->win), data->width, data->height);
// try to set transparent for input
cairo_region_t* r = cairo_region_create();
gtk_widget_input_shape_combine_region(data->win, r);
cairo_region_destroy(r);
/* recreate the shape surface */
cairo_surface_t *new_shape = cairo_image_surface_create(CAIRO_FORMAT_ARGB32 ,data->width, data->height);
cairo_t *cr = cairo_create (new_shape);
cairo_set_source_surface (cr, data->backbuffer, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
cairo_surface_destroy(data->backbuffer);
data->backbuffer = new_shape;
/*
these depend on the shape surface
*/
GHashTableIter it;
gpointer value;
g_hash_table_iter_init (&it, data->tool_config);
while (g_hash_table_iter_next (&it, NULL, &value))
paint_context_free(value);
g_hash_table_remove_all(data->tool_config);
parse_config(data); // also calls paint_context_new() :-(
data->default_pen = paint_context_new (data, GROMIT_PEN,
data->red, 7, 0, 1);
data->default_eraser = paint_context_new (data, GROMIT_ERASER,
data->red, 75, 0, 1);
if(!data->composited) // set shape
{
cairo_region_t* r = gdk_cairo_region_create_from_surface(data->backbuffer);
gtk_widget_shape_combine_region(data->win, r);
cairo_region_destroy(r);
}
setup_input_devices(data);
gtk_widget_show_all (data->win);
}
void on_device_added (GdkDeviceManager *device_manager,
GdkDevice *device,
gpointer user_data)
{
GromitData *data = (GromitData *) user_data;
GdkInputSource hardware_type = gdk_device_get_source(device);
if( hardware_type == GDK_SOURCE_KEYBOARD ||
gdk_device_get_n_axes(device) < 2)
return;
if(data->debug)
g_printerr("DEBUG: device '%s' added\n", gdk_device_get_name(device));
setup_input_devices(data);
}
/* Remote control */
void on_mainapp_selection_get (GtkWidget *widget,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer user_data)
{
GromitData *data = (GromitData *) user_data;
gchar *uri = "OK";
GdkAtom action = gtk_selection_data_get_target(selection_data);
if(action == GA_TOGGLE)
{
/* ask back client for device id */
gtk_selection_convert (data->win, GA_DATA,
GA_TOGGLEDATA, time);
gtk_main(); /* Wait for the response */
}
else if (action == GA_VISIBILITY)
toggle_visibility (data);
else if (action == GA_CLEAR)
clear_screen (data);
else if (action == GA_RELOAD)
setup_input_devices(data);
else if (action == GA_QUIT)
gtk_main_quit ();
else if (action == GA_UNDO)
undo_drawing (data);
else if (action == GA_REDO)
redo_drawing (data);
else
uri = "NOK";
gtk_selection_data_set (selection_data,
gtk_selection_data_get_target(selection_data),
8, (guchar*)uri, strlen (uri));
}
void acquire_grab (GromitData *data,
GdkDevice *dev)
{
show_window (data);
if(!dev) /* this means grab all */
{
GHashTableIter it;
gpointer value;
GromitDeviceData* devdata = NULL;
g_hash_table_iter_init (&it, data->devdatatable);
while (g_hash_table_iter_next (&it, NULL, &value))
{
GdkCursor *cursor;
devdata = value;
if(devdata->is_grabbed || gdk_device_get_device_type(devdata->device) == GDK_DEVICE_TYPE_SLAVE)
continue;
if(devdata->cur_context && devdata->cur_context->type == GROMIT_ERASER)
cursor = data->erase_cursor;
else
cursor = data->paint_cursor;
if(gdk_device_grab(devdata->device,
gtk_widget_get_window(data->win),
GDK_OWNERSHIP_NONE,
FALSE,
GROMIT_MOUSE_EVENTS,
cursor,
GDK_CURRENT_TIME) != GDK_GRAB_SUCCESS)
{
/* this probably means the device table is outdated,
e.g. this device doesn't exist anymore */
g_printerr("Error grabbing Device '%s' while grabbing all, ignoring.\n",
gdk_device_get_name(devdata->device));
continue;
}
devdata->is_grabbed = 1;
}
data->all_grabbed = 1;
if(data->debug)
g_printerr("DEBUG: Grabbed all Devices.\n");
return;
}
GromitDeviceData *devdata =
g_hash_table_lookup(data->devdatatable, dev);
if (!devdata->is_grabbed)
{
GdkCursor *cursor;
if(devdata->cur_context && devdata->cur_context->type == GROMIT_ERASER)
cursor = data->erase_cursor;
else
cursor = data->paint_cursor;
if(gdk_device_grab(devdata->device,
gtk_widget_get_window(data->win),
GDK_OWNERSHIP_NONE,
FALSE,
GROMIT_MOUSE_EVENTS,
cursor,
GDK_CURRENT_TIME) != GDK_GRAB_SUCCESS)
{
/* this probably means the device table is outdated,
e.g. this device doesn't exist anymore */
g_printerr("Error grabbing device '%s', rescanning device list.\n",
gdk_device_get_name(devdata->device));
setup_input_devices(data);
return;
}
devdata->is_grabbed = 1;
if(data->debug)
g_printerr("DEBUG: Grabbed Device '%s'.\n", gdk_device_get_name(devdata->device));
}
}
