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author | alberth <alberth@openttd.org> | 2010-07-26 13:02:28 +0000 |
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committer | alberth <alberth@openttd.org> | 2010-07-26 13:02:28 +0000 |
commit | 3a1451644a0eae226545818adbde8a8a8c45eab7 (patch) | |
tree | 130026ba4b8d6f2d094d756f434671a4cbc52569 /src/window.cpp | |
parent | 80cc566553ca1eb33566e0b05a49b7112d98718d (diff) | |
download | openttd-3a1451644a0eae226545818adbde8a8a8c45eab7.tar.xz |
(svn r20221) -Codechange: Move unscrolled row calculation into a function.
Diffstat (limited to 'src/window.cpp')
-rw-r--r-- | src/window.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/window.cpp b/src/window.cpp index da6a1cc18..c3cde4d5a 100644 --- a/src/window.cpp +++ b/src/window.cpp @@ -82,6 +82,22 @@ 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<NWidgetBase>(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. * @param widget Widget with size and resize properties. |