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add Rectangle::vertical_fraction() as a convenience method

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Conflicts:
	libs/canvas/rectangle.cc
This commit is contained in:
Paul Davis 2014-11-24 13:09:09 +02:00
parent 6e335ca5d9
commit 59ce8663f9
2 changed files with 31 additions and 0 deletions
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11
libs/canvas/canvas/rectangle.h
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@ -64,6 +64,17 @@ public:
void set_x1 (Coord);
void set_y1 (Coord);
/** return @param y as a floating point fraction of the overall
* height of the rectangle. @param y is in canvas coordinate space.
*
* A value of zero indicates that y is at the bottom of the
* rectangle; a value of 1 indicates that y is at the top.
*
* Will return zero if there is no bounding box or if y
* is outside the bounding box.
*/
double vertical_fraction (double y) const;
enum What {
NOTHING = 0x0,
LEFT = 0x1,