cpp/openttd-patchpack/source Changeset - r15552:db706a5de04a

Changeset - r15552:db706a5de04a

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alberth - 14 years ago 2010-07-26 13:03:40
alberth@openttd.org

(svn r20222) -Add: Add functions to compute the row in a scrolled widget.

2 files changed with 20 insertions and 2 deletions:

src/window.cpp

src/window_gui.h

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src/window.cpp

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@@ @@ -86,18 +86,34 @@ WindowDesc::~WindowDesc() @@
  * @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.
+ * @param line_height Height of a single row. A negative value means using the vertical resize step of the widget.
  * @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 (line_height < 0) line_height = wid->resize_y;
 	if (clickpos < (int)wid->pos_y + padding) return INT_MAX;
 	return (clickpos - (int)wid->pos_y - padding) / line_height;
+}
 /**
  * Compute the row of a scrolled widget that a user clicked in.
  * @param clickpos    Vertical position of the mouse click (without taking scrolling into account).
  * @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. Default value is \c 0.
  * @param line_height Height of a single row. A negative value means using the vertical resize step of the widget.
  * @return Row number clicked at. If clicked at a wrong position, #INT_MAX is returned.
  */
 int Scrollbar::GetScrolledRowFromWidget(int clickpos, const Window * const w, int widget, int padding, int line_height) const
+{
 	uint pos = w->GetRowFromWidget(clickpos, widget, padding, line_height);
 	if (pos != INT_MAX) pos += this->GetPosition();
 	return (pos >= this->GetCount()) ? INT_MAX : pos;
+}
 /**
  * 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.

src/window_gui.h

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@@ @@ -305,6 +305,8 @@ public: @@
 			this->SetPosition(position - this->GetCapacity() + 1);
+		}
+	}
 	int GetScrolledRowFromWidget(int clickpos, const Window * const w, int widget, int padding = 0, int line_height = -1) const;
 };
 /**
@@ @@ -528,7 +530,7 @@ public: @@
 	bool SetFocusedWidget(byte widget_index);
 	void HandleButtonClick(byte widget);
 	int GetRowFromWidget(int clickpos, int widget, int padding, int line_height) const;
+	int GetRowFromWidget(int clickpos, int widget, int padding, int line_height = -1) const;
 	void RaiseButtons(bool autoraise = false);
 	void CDECL SetWidgetsDisabledState(bool disab_stat, int widgets, ...);

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