C++ (Cpp) get_mapview_scroll_window Examples

Example #1

File: mapview.c Project: longturn/freeciv-S2_5

/**************************************************************************
...
**************************************************************************/
void update_map_canvas_scrollbars(void)
{
  float shown_h, top_h, shown_v, top_v;
  int xmin, ymin, xmax, ymax, xsize, ysize;
  int scroll_x, scroll_y;

  get_mapview_scroll_window(&xmin, &ymin, &xmax, &ymax, &xsize, &ysize);
  get_mapview_scroll_pos(&scroll_x, &scroll_y);

  top_h = (float)(scroll_x - xmin) / (float)(xmax - xmin);
  top_v = (float)(scroll_y - ymin) / (float)(ymax - ymin);

  shown_h = (float)xsize / (float)(xmax - xmin);
  shown_v = (float)ysize / (float)(ymax - ymin);

  XawScrollbarSetThumb(map_horizontal_scrollbar, top_h, shown_h);
  XawScrollbarSetThumb(map_vertical_scrollbar, top_v, shown_v);
}

Example #2

File: mapview.c Project: valisc/freeciv

/**************************************************************************
  Refresh map canvas scrollbar as canvas size changes
**************************************************************************/
void update_map_canvas_scrollbars_size(void)
{
  int xmin, ymin, xmax, ymax, xsize, ysize, xstep, ystep;

  get_mapview_scroll_window(&xmin, &ymin, &xmax, &ymax, &xsize, &ysize);
  get_mapview_scroll_step(&xstep, &ystep);

  map_hadj = gtk_adjustment_new(-1, xmin, xmax, xstep, xsize, xsize);
  map_vadj = gtk_adjustment_new(-1, ymin, ymax, ystep, ysize, ysize);

  gtk_range_set_adjustment(GTK_RANGE(map_horizontal_scrollbar), map_hadj);
  gtk_range_set_adjustment(GTK_RANGE(map_vertical_scrollbar), map_vadj);

  g_signal_connect(map_hadj, "value_changed",
	G_CALLBACK(scrollbar_jump_callback),
	GINT_TO_POINTER(TRUE));
  g_signal_connect(map_vadj, "value_changed",
	G_CALLBACK(scrollbar_jump_callback),
	GINT_TO_POINTER(FALSE));
}

Example #3

File: mapview.c Project: longturn/freeciv-S2_5

/**************************************************************************
...
**************************************************************************/
void scrollbar_jump_callback(Widget w, XtPointer client_data,
			     XtPointer percent_ptr)
{
  float percent=*(float*)percent_ptr;
  int xmin, ymin, xmax, ymax, xsize, ysize;
  int scroll_x, scroll_y;

  if (!can_client_change_view()) {
    return;
  }

  get_mapview_scroll_window(&xmin, &ymin, &xmax, &ymax, &xsize, &ysize);
  get_mapview_scroll_pos(&scroll_x, &scroll_y);

  if(w==map_horizontal_scrollbar) {
    scroll_x = xmin + (percent * (xmax - xmin));
  } else {
    scroll_y = ymin + (percent * (ymax - ymin));
  }

  set_mapview_scroll_pos(scroll_x, scroll_y);
}