From 2521a7918783758928a58f6032ca6fad53a89c01 Mon Sep 17 00:00:00 2001 From: Stanislaw Halik Date: Fri, 6 Nov 2015 21:18:13 +0100 Subject: spline: snap x, y coordinates to grid --- spline-widget/qfunctionconfigurator.cpp | 13 ++++++++++--- spline-widget/qfunctionconfigurator.h | 3 +++ 2 files changed, 13 insertions(+), 3 deletions(-) (limited to 'spline-widget') 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; diff --git a/spline-widget/qfunctionconfigurator.h b/spline-widget/qfunctionconfigurator.h index 4a9cb5f1..d4ba904a 100644 --- a/spline-widget/qfunctionconfigurator.h +++ b/spline-widget/qfunctionconfigurator.h @@ -39,6 +39,8 @@ public: _background = QPixmap(); update(); } + void set_snap(int x, int y) { snap_x = x; snap_y = y; } + void get_snap(int& x, int& y) const { x = snap_x; y = snap_y; } protected slots: void paintEvent(QPaintEvent *e) override; void mousePressEvent(QMouseEvent *e) override; @@ -72,4 +74,5 @@ private: QPixmap _background; QPixmap _function; bool _draw_function; + int snap_x, snap_y; }; -- cgit v1.2.3