TimeMarker: Align to a integer pixel offset

[pulseview.git] / pv / view / timemarker.cpp

diff --git a/pv/view/timemarker.cpp b/pv/view/timemarker.cpp
index 52fcf45612167fa50f2cbc4dffbcd975990a2ef6..88616bf20fb2cdb1a06367aeb8ee77250fc2c55b 100644 (file)
--- a/pv/view/timemarker.cpp
+++ b/pv/view/timemarker.cpp
@@ -14,22 +14,22 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <algorithm>
+#include <cmath>
 
 #include <extdef.h>
 
 #include "timemarker.hpp"
 
-#include "view.hpp"
 #include "pv/widgets/timestampspinbox.hpp"
+#include "view.hpp"
 
 #include <QApplication>
-#include <QFormLayout>
 #include <QFontMetrics>
+#include <QFormLayout>
 #include <QPainter>
 
 #include <pv/widgets/popup.hpp>
@@ -74,7 +74,7 @@ void TimeMarker::set_time(const pv::util::Timestamp& time)
 
 float TimeMarker::get_x() const
 {
-       return ((time_ - view_.offset()) / view_.scale()).convert_to<float>();
+       return std::roundf(((time_ - view_.offset()) / view_.scale()).convert_to<float>()) + 0.5f;
 }
 
 QPoint TimeMarker::point(const QRect &rect) const
@@ -108,7 +108,7 @@ void TimeMarker::paint_label(QPainter &p, const QRect &rect, bool hover)
        if (!enabled())
                return;
 
-       const qreal x = ((time_ - view_.offset()) / view_.scale()).convert_to<qreal>();
+       const qreal x = get_x();
        const QRectF r(label_rect(rect));
 
        const QPointF points[] = {