[multimedia/kdenlive] src/dialogs: timeremap: draw time_map curve in RemapView

Git commit e7bd0747e0737bef32282a9a2e115e57e2c421e5 by Jean-Baptiste Mardelle, on behalf of Yash Bavadiya.
Committed on 18/08/2026 at 08:31.
Pushed by mardelle into branch 'master'.

timeremap: draw time_map curve in RemapView

M  +27   -0    src/dialogs/timeremap.cpp

https://invent.kde.org/multimedia/kdenlive/-/commit/e7bd0747e0737bef32282a9a2e115e57e2c421e5

diff --git a/src/dialogs/timeremap.cpp b/src/dialogs/timeremap.cpp
index 129cc91ea7..b24d5c9e8f 100644
--- a/src/dialogs/timeremap.cpp
+++ b/src/dialogs/timeremap.cpp
@@ -1544,6 +1544,33 @@ void RemapView::paintEvent(QPaintEvent *event)
         p.drawLine(outPos, m_lineHeight, outPos, m_bottomView - m_lineHeight);
     }
 
+    /*
+     * Time remap curve, drawn between the two rulers. The x axis is the output
+     * position, the y axis is the source position sampled from the time_map
+     * animation, so the curve shape matches what MLT will play back
+     */
+    if (!m_keyframes.isEmpty() && m_remapProps.is_valid() && m_remapProps.property_exists("time_map")) {
+        int maxSource = remapMax();
+        if (maxSource > 0) {
+            double curveTop = m_lineHeight * 1.75;
+            double curveBottom = m_bottomView - m_lineHeight * 1.75;
+            QColor curveColor = m_colSelected;
+            curveColor.setAlpha(160);
+            p.setPen(curveColor);
+            p.setRenderHint(QPainter::Antialiasing);
+            QPolygonF curvePoints;
+            for (int px = 0; px <= maxWidth; px++) {
+                int framePos = int((px / m_zoomFactor + m_zoomStart) / m_scale);
+                double sourcePos = m_remapProps.anim_get_double("time_map", framePos + m_inFrame) * fps - m_inFrame;
+                double ratio = qBound(0., sourcePos / maxSource, 1.);
+                curvePoints << QPointF(px + m_offset, curveBottom - ratio * (curveBottom - curveTop));
+            }
+            p.drawPolyline(curvePoints);
+            p.setRenderHint(QPainter::Antialiasing, false);
+            p.setPen(m_colKeyframe);
+        }
+    }
+
     /*
      * Keyframes
      */