/**
* Returns a rectangle describing the size and location relative to its parent of the text at a
* column in the table. An empty rectangle is returned if index exceeds the index of the table's
* last column.
*
* @param index the index that specifies the column
* @return the receiver's bounding text rectangle
* @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>
*
* @since 3.3
*/
public Rectangle getTextBounds(int index) {
checkWidget();
if (!parent.checkData(this)) error(SWT.ERROR_WIDGET_DISPOSED);
int count = Math.max(1, parent.getColumnCount());
if (0 > index || index > count - 1) return new Rectangle(0, 0, 0, 0);
// TODO fully test on early and later versions of GTK
// shifted a bit too far right on later versions of GTK - however, old Tree also had this
// problem
int /*long*/ parentHandle = parent.handle;
int /*long*/ column = 0;
if (index >= 0 && index < parent.columnCount) {
column = parent.columns[index].handle;
} else {
column = OS.gtk_tree_view_get_column(parentHandle, index);
}
if (column == 0) return new Rectangle(0, 0, 0, 0);
int /*long*/ textRenderer = parent.getTextRenderer(column);
int /*long*/ pixbufRenderer = parent.getPixbufRenderer(column);
if (textRenderer == 0 || pixbufRenderer == 0) return new Rectangle(0, 0, 0, 0);
int /*long*/ path = OS.gtk_tree_model_get_path(parent.modelHandle, handle);
OS.gtk_widget_realize(parentHandle);
boolean isExpander = OS.gtk_tree_model_iter_n_children(parent.modelHandle, handle) > 0;
boolean isExpanded = OS.gtk_tree_view_row_expanded(parentHandle, path);
OS.gtk_tree_view_column_cell_set_cell_data(
column, parent.modelHandle, handle, isExpander, isExpanded);
GdkRectangle rect = new GdkRectangle();
OS.gtk_tree_view_get_cell_area(parentHandle, path, column, rect);
OS.gtk_tree_path_free(path);
if ((parent.getStyle() & SWT.MIRRORED) != 0)
rect.x = parent.getClientWidth() - rect.width - rect.x;
int right = rect.x + rect.width;
int[] x = new int[1], w = new int[1];
parent.ignoreSize = true;
OS.gtk_cell_renderer_get_size(textRenderer, parentHandle, null, null, null, w, null);
parent.ignoreSize = false;
int[] buffer = new int[1];
if (OS.gtk_tree_view_get_expander_column(parentHandle) == column) {
OS.gtk_widget_style_get(parentHandle, OS.expander_size, buffer, 0);
rect.x += buffer[0] + TreeItem.EXPANDER_EXTRA_PADDING;
}
OS.gtk_widget_style_get(parentHandle, OS.horizontal_separator, buffer, 0);
int horizontalSeparator = buffer[0];
rect.x += horizontalSeparator;
if (OS.GTK_VERSION >= OS.VERSION(2, 1, 3)) {
OS.gtk_tree_view_column_cell_get_position(column, textRenderer, x, null);
rect.x += x[0];
} else {
if ((parent.style & SWT.CHECK) != 0) {
OS.gtk_cell_renderer_get_size(
parent.checkRenderer, parentHandle, null, null, null, w, null);
rect.x += w[0] + horizontalSeparator;
}
OS.gtk_cell_renderer_get_size(pixbufRenderer, parentHandle, null, null, null, w, null);
rect.x += w[0] + horizontalSeparator;
}
if (parent.columnCount > 0) {
if (rect.x + rect.width > right) {
rect.width = Math.max(0, right - rect.x);
}
}
int width = OS.gtk_tree_view_column_get_visible(column) ? rect.width + 1 : 0;
return new Rectangle(rect.x, rect.y, width, rect.height + 1);
}
