C++ (Cpp) color_rotate_draw_arrows Examples

Example #1

File: color-rotate-callbacks.c Project: jdburton/gimp-osx

gboolean
rcm_button_press_event (GtkWidget      *widget,
			GdkEventButton *event,
			RcmCircle      *circle)
{
  float  clicked_angle;
  float *alpha;
  float *beta;

  alpha  = &circle->angle->alpha;
  beta   = &circle->angle->beta;

  circle->action_flag = DRAG_START;
  clicked_angle = angle_mod_2PI (arctg (CENTER - event->y, event->x - CENTER));
  circle->prev_clicked = clicked_angle;

  if ((sqrt (SQR (event->y - CENTER) +
             SQR (event->x - CENTER)) > RADIUS * EACH_OR_BOTH) &&
      (min_prox (*alpha, *beta, clicked_angle) < G_PI / 12))
    {
      circle->mode = EACH;
      circle->target = closest (alpha, beta, clicked_angle);

      if (*(circle->target) != clicked_angle)
        {
          GtkStyle *style = gtk_widget_get_style (widget);

          *(circle->target) = clicked_angle;
          gtk_widget_queue_draw (circle->preview);
          color_rotate_draw_arrows (widget->window,
                                    style->black_gc,
                                    circle->angle);

          gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->alpha_entry),
                                     circle->angle->alpha *
                                     rcm_units_factor(Current.Units));

          gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->beta_entry),
                                     circle->angle->beta *
                                     rcm_units_factor(Current.Units));

          if (Current.RealTime)
            rcm_render_preview (Current.Bna->after);
        }
    }
  else
    circle->mode = BOTH;

  return TRUE;
}

Example #2

File: color-rotate-callbacks.c Project: jdburton/gimp-osx

void
rcm_360_degrees (GtkWidget *button,
		 RcmCircle *circle)
{
  GtkStyle *style = gtk_widget_get_style (circle->preview);

  circle->action_flag = DO_NOTHING;
  gtk_widget_queue_draw (circle->preview);
  circle->angle->beta = circle->angle->alpha-circle->angle->cw_ccw * 0.001;
  color_rotate_draw_arrows (circle->preview->window,
                            style->black_gc,
                            circle->angle);
  circle->action_flag = VIRGIN;
  rcm_render_preview (Current.Bna->after);
}

Example #3

File: color-rotate-callbacks.c Project: AjayRamanathan/gimp

gboolean
rcm_expose_event (GtkWidget      *widget,
		  GdkEventExpose *event,
		  RcmCircle      *circle)
{
  cairo_t *cr = gdk_cairo_create (gtk_widget_get_window (widget));

  cairo_translate (cr, 0.5, 0.5);

  color_rotate_draw_arrows (cr, circle->angle);

  cairo_destroy (cr);

  return TRUE;
}

Example #4

File: color-rotate-callbacks.c Project: jdburton/gimp-osx

gboolean
rcm_expose_event (GtkWidget      *widget,
		  GdkEventExpose *event,
		  RcmCircle      *circle)
{
  if (circle->action_flag == VIRGIN)
    {
      GtkStyle *style = gtk_widget_get_style (widget);

      color_rotate_draw_arrows (widget->window,
                                style->black_gc,
                                circle->angle);
    }

  return TRUE;
}

Example #5

File: color-rotate-callbacks.c Project: jdburton/gimp-osx

void
rcm_set_beta (GtkWidget *entry,
              RcmCircle *circle)
{
  GtkStyle *style = gtk_widget_get_style (circle->preview);

  if (circle->action_flag != VIRGIN)
    return;

  circle->angle->beta = (gtk_spin_button_get_value (GTK_SPIN_BUTTON (entry)) /
                         rcm_units_factor(Current.Units));

  gtk_widget_queue_draw (circle->preview);

  color_rotate_draw_arrows (circle->preview->window,
                            style->black_gc,
                            circle->angle);

  rcm_render_preview (Current.Bna->after);
}

Example #6

File: color-rotate-callbacks.c Project: jdburton/gimp-osx

gboolean
rcm_release_event (GtkWidget      *widget,
		   GdkEventButton *event,
		   RcmCircle      *circle)
{
  if (circle->action_flag == DRAGING)
    {
      GtkStyle *style = gtk_widget_get_style (widget);

      gtk_widget_queue_draw (circle->preview);
      color_rotate_draw_arrows (widget->window,
                                style->black_gc,
                                circle->angle);
    }

  circle->action_flag = VIRGIN;

  rcm_render_preview (Current.Bna->after);

  return TRUE;
}

Example #7

File: color-rotate-callbacks.c Project: jdburton/gimp-osx

gboolean
rcm_motion_notify_event (GtkWidget      *widget,
			 GdkEventMotion *event,
			 RcmCircle      *circle)
{
  gfloat       clicked_angle, delta;
  gfloat      *alpha, *beta;
  gint         cw_ccw;
  GdkGCValues  values;

  alpha  = &(circle->angle->alpha);
  beta   = &(circle->angle->beta);
  cw_ccw = circle->angle->cw_ccw;
  delta  = angle_mod_2PI (cw_ccw * (*beta - *alpha));

  values.function = GDK_INVERT;
  xor_gc = gdk_gc_new_with_values (Current.From->preview->window,
                                   &values,
                                   GDK_GC_FUNCTION);

  clicked_angle = angle_mod_2PI (arctg (CENTER - event->y, event->x - CENTER));

  delta = clicked_angle - circle->prev_clicked;
  circle->prev_clicked = clicked_angle;

  if (delta)
    {
      if (circle->action_flag == DRAG_START)
        {
          gtk_widget_queue_draw (circle->preview);
          circle->action_flag = DRAGING;
        }
      else
        {
          /* this should be erasing entire angle */
          color_rotate_draw_arrows (widget->window, xor_gc, circle->angle);
        }

      if (circle->mode == EACH)
        {
          *(circle->target)=clicked_angle;
        }
      else
        {
          circle->angle->alpha=angle_mod_2PI(circle->angle->alpha + delta);
          circle->angle->beta =angle_mod_2PI(circle->angle->beta  + delta);
        }

      gdk_window_process_updates (widget->window, FALSE);
      color_rotate_draw_arrows (widget->window, xor_gc, circle->angle);

      gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->alpha_entry),
                                 circle->angle->alpha *
                                 rcm_units_factor(Current.Units));

      gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->beta_entry),
                                 circle->angle->beta *
                                 rcm_units_factor(Current.Units));

      if (Current.RealTime)
        rcm_render_preview (Current.Bna->after);
    }

  gdk_event_request_motions (event);

  return TRUE;
}