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break down GdkEventExpose into distinct rectangles for canvas expose rather than...
[ardour.git]
/
libs
/
canvas
/
line.cc
diff --git
a/libs/canvas/line.cc
b/libs/canvas/line.cc
index 61acf892528a0d73c150008c400d63f2cef75c6a..09f9061c8593653b601c3d6791c7c42918f06982 100644
(file)
--- a/
libs/canvas/line.cc
+++ b/
libs/canvas/line.cc
@@
-60,11
+60,17
@@
Line::render (Rect const & /*area*/, Cairo::RefPtr<Cairo::Context> context) cons
Duple p0 = item_to_window (Duple (_points[0].x, _points[0].y));
Duple p1 = item_to_window (Duple (_points[1].x, _points[1].y));
Duple p0 = item_to_window (Duple (_points[0].x, _points[0].y));
Duple p1 = item_to_window (Duple (_points[1].x, _points[1].y));
- /* See Cairo FAQ on single pixel lines to understand why we add 0.5
- */
+ if (_outline_width <= 1.0) {
+ /* See Cairo FAQ on single pixel lines to understand why we add 0.5
+ */
+
+ const Duple half_a_pixel (0.5, 0.5);
+ p0 = p0.translate (half_a_pixel);
+ p1 = p1.translate (half_a_pixel);
+ }
- context->move_to (p0.x
+ 0.5, p0.y + 0.5
);
- context->line_to (p1.x
+ 0.5, p1.y + 0.5
);
+ context->move_to (p0.x
, p0.y
);
+ context->line_to (p1.x
, p1.y
);
context->stroke ();
}
context->stroke ();
}