From 3a1451644a0eae226545818adbde8a8a8c45eab7 Mon Sep 17 00:00:00 2001 From: alberth Date: Mon, 26 Jul 2010 13:02:28 +0000 Subject: (svn r20221) -Codechange: Move unscrolled row calculation into a function. --- src/window.cpp | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'src/window.cpp') diff --git a/src/window.cpp b/src/window.cpp index da6a1cc18..c3cde4d5a 100644 --- a/src/window.cpp +++ b/src/window.cpp @@ -81,6 +81,22 @@ WindowDesc::~WindowDesc() { } +/** + * Compute the row of a widget that a user clicked in. + * @param clickpos Vertical position of the mouse click. + * @param widget Widget number of the widget clicked in. + * @param padding Amount of empty space between the widget edge and the top of the first row. + * @param line_height Height of a single row. + * @return Row number clicked at. If clicked at a wrong position, #INT_MAX is returned. + * @note The widget does not know where a list printed at the widget ends, so below a list is not a wrong position. + */ +int Window::GetRowFromWidget(int clickpos, int widget, int padding, int line_height) const +{ + const NWidgetBase *wid = this->GetWidget(widget); + if (clickpos < (int)wid->pos_y + padding) return INT_MAX; + return (clickpos - (int)wid->pos_y - padding) / line_height; +} + /** * Set capacity of visible elements from the size and resize properties of a widget. * @param w Window. -- cgit v1.2.3-54-g00ecf