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authorStanislaw Halik <sthalik@misaki.pl>2015-11-06 21:18:13 +0100
committerStanislaw Halik <sthalik@misaki.pl>2015-11-06 21:18:13 +0100
commit2521a7918783758928a58f6032ca6fad53a89c01 (patch)
treea34eda1e01b44133b7a1d6035f101662e7c292d2 /spline-widget/qfunctionconfigurator.cpp
parent0fb267c19925a949a8b1f8c62d9fbe52ba821d3d (diff)
spline: snap x, y coordinates to grid
Diffstat (limited to 'spline-widget/qfunctionconfigurator.cpp')
-rw-r--r--spline-widget/qfunctionconfigurator.cpp13
1 files changed, 10 insertions, 3 deletions
diff --git a/spline-widget/qfunctionconfigurator.cpp b/spline-widget/qfunctionconfigurator.cpp
index 5d910826..112b5457 100644
--- a/spline-widget/qfunctionconfigurator.cpp
+++ b/spline-widget/qfunctionconfigurator.cpp
@@ -21,7 +21,9 @@ QFunctionConfigurator::QFunctionConfigurator(QWidget *parent) :
QWidget(parent),
_config(nullptr),
moving_control_point_idx(-1),
- _draw_function(true)
+ _draw_function(true),
+ snap_x(0),
+ snap_y(0)
{
update_range();
setMouseTracking(true);
@@ -412,8 +414,13 @@ QPointF QFunctionConfigurator::pixel_coord_to_point(const QPointF& point)
if (!_config)
return QPointF(-1, -1);
- double x = (point.x() - pixel_bounds.x()) / c.x();
- double y = (pixel_bounds.height() - point.y() + pixel_bounds.y()) / c.y();
+ int x = (point.x() - pixel_bounds.x()) / c.x();
+ int y = (pixel_bounds.height() - point.y() + pixel_bounds.y()) / c.y();
+
+ if (snap_x > 0)
+ x -= x % snap_x;
+ if (snap_y > 0)
+ y -= y % snap_y;
if (x < 0)
x = 0;