示例#1
0
 /**
  * Sets the maximum value that the receiver will allow. This new value will be ignored if it is
  * not greater than the receiver's current minimum value. If the new maximum is applied then the
  * receiver's selection value will be adjusted if necessary to fall within its new range.
  *
  * @param value the new maximum, which must be greater than the current minimum
  * @exception SWTException
  *     <ul>
  *       <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  *       <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  *     </ul>
  */
 public void setMaximum(int value) {
   checkWidget();
   if (value <= minimum) return;
   maximum = value;
   selection = Math.min(selection, maximum);
   updateBar(selection, minimum, maximum);
 }
  Image getDragSourceImage(DragSourceEvent event) {
    if (dragSourceImage != null) dragSourceImage.dispose();
    dragSourceImage = null;

    Table table = (Table) control;
    if (OS.GTK_VERSION < OS.VERSION(2, 2, 0)) return null;
    // TEMPORARY CODE
    if (table.isListening(SWT.EraseItem) || table.isListening(SWT.PaintItem)) return null;
    /*
     * Bug in GTK.  gtk_tree_selection_get_selected_rows() segmentation faults
     * in versions smaller than 2.2.4 if the model is NULL.  The fix is
     * to give a valid pointer instead.
     */
    long /*int*/ handle = table.handle;
    long /*int*/ selection = OS.gtk_tree_view_get_selection(handle);
    long /*int*/[] model = OS.GTK_VERSION < OS.VERSION(2, 2, 4) ? new long /*int*/[1] : null;
    long /*int*/ list = OS.gtk_tree_selection_get_selected_rows(selection, model);
    if (list == 0) return null;
    int count = Math.min(10, OS.g_list_length(list));

    Display display = table.getDisplay();
    if (count == 1) {
      long /*int*/ path = OS.g_list_nth_data(list, 0);
      long /*int*/ pixmap = OS.gtk_tree_view_create_row_drag_icon(handle, path);
      dragSourceImage = Image.gtk_new(display, SWT.ICON, pixmap, 0);
    } else {
      int width = 0, height = 0;
      int[] w = new int[1], h = new int[1];
      int[] yy = new int[count], hh = new int[count];
      long /*int*/[] pixmaps = new long /*int*/[count];
      GdkRectangle rect = new GdkRectangle();
      for (int i = 0; i < count; i++) {
        long /*int*/ path = OS.g_list_nth_data(list, i);
        OS.gtk_tree_view_get_cell_area(handle, path, 0, rect);
        pixmaps[i] = OS.gtk_tree_view_create_row_drag_icon(handle, path);
        OS.gdk_drawable_get_size(pixmaps[i], w, h);
        width = Math.max(width, w[0]);
        height = rect.y + h[0] - yy[0];
        yy[i] = rect.y;
        hh[i] = h[0];
      }
      long /*int*/ source = OS.gdk_pixmap_new(OS.GDK_ROOT_PARENT(), width, height, -1);
      long /*int*/ gcSource = OS.gdk_gc_new(source);
      long /*int*/ mask = OS.gdk_pixmap_new(OS.GDK_ROOT_PARENT(), width, height, 1);
      long /*int*/ gcMask = OS.gdk_gc_new(mask);
      GdkColor color = new GdkColor();
      color.pixel = 0;
      OS.gdk_gc_set_foreground(gcMask, color);
      OS.gdk_draw_rectangle(mask, gcMask, 1, 0, 0, width, height);
      color.pixel = 1;
      OS.gdk_gc_set_foreground(gcMask, color);
      for (int i = 0; i < count; i++) {
        OS.gdk_draw_drawable(source, gcSource, pixmaps[i], 0, 0, 0, yy[i] - yy[0], -1, -1);
        OS.gdk_draw_rectangle(mask, gcMask, 1, 0, yy[i] - yy[0], width, hh[i]);
        OS.g_object_unref(pixmaps[i]);
      }
      OS.g_object_unref(gcSource);
      OS.g_object_unref(gcMask);
      dragSourceImage = Image.gtk_new(display, SWT.ICON, source, mask);
    }
    OS.g_list_free(list);

    return dragSourceImage;
  }
示例#3
0
 /**
  * Sets the single 'selection' that is the receiver's position to the argument which must be
  * greater than or equal to zero.
  *
  * @param value the new selection (must be zero or greater)
  * @exception SWTException
  *     <ul>
  *       <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  *       <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  *     </ul>
  */
 public void setSelection(int value) {
   checkWidget();
   selection = Math.max(minimum, Math.min(maximum, value));
   updateBar(selection, minimum, maximum);
 }