C++ (Cpp) dt_gui_get_scroll_unit_deltasの例

コード例 #1

ファイル: filter.c プロジェクト: dtorop/darktable

static gboolean _comparator_scolled(GtkWidget *widget, GdkEventScroll *event, gpointer user_data)
{
  int delta_y;
  if(dt_gui_get_scroll_unit_deltas(event, NULL, &delta_y))
    _change_comparator(GTK_WIDGET(widget), user_data, delta_y);
  return TRUE;
}

コード例 #2

ファイル: zonesystem.c プロジェクト: rgo/darktable

static gboolean dt_iop_zonesystem_bar_scrolled(GtkWidget *widget, GdkEventScroll *event, dt_iop_module_t *self)
{
  dt_iop_zonesystem_params_t *p = (dt_iop_zonesystem_params_t *)self->params;
  int cs = CLAMP(p->size, 4, MAX_ZONE_SYSTEM_SIZE);

  int delta_y;
  if(dt_gui_get_scroll_unit_deltas(event, NULL, &delta_y))
  {
    p->size = CLAMP(p->size - delta_y, 4, MAX_ZONE_SYSTEM_SIZE);
    p->zone[cs] = -1;
    dt_dev_add_history_item(darktable.develop, self, TRUE);
    gtk_widget_queue_draw(widget);
  }

  return TRUE;
}

コード例 #3

ファイル: histogram.c プロジェクト: dtorop/darktable

static gboolean _lib_histogram_scroll_callback(GtkWidget *widget, GdkEventScroll *event, gpointer user_data)
{
  dt_lib_module_t *self = (dt_lib_module_t *)user_data;
  dt_lib_histogram_t *d = (dt_lib_histogram_t *)self->data;

  float ce = dt_dev_exposure_get_exposure(darktable.develop);
  float cb = dt_dev_exposure_get_black(darktable.develop);

  int delta_y;
  // note are using unit rather than smooth scroll events, as
  // exposure changes can get laggy if handling a multitude of smooth
  // scroll events
  if(dt_gui_get_scroll_unit_deltas(event, NULL, &delta_y))
  {
    if(d->highlight == 2)
      dt_dev_exposure_set_exposure(darktable.develop, ce - 0.15f * delta_y);
    else if(d->highlight == 1)
      dt_dev_exposure_set_black(darktable.develop, cb + 0.001f * delta_y);
  }

  return TRUE;
}