first commit

qml/content/Legend.qml

@@ -0,0 +1,49 @@
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Layouts
+
+Item {
+    id: root
+    property int minValue: 0
+    property int maxValue: 100
+
+    implicitWidth: 90
+    implicitHeight: 220
+
+    ColumnLayout {
+        anchors.fill: parent
+        spacing: 6
+
+        Label {
+            text: root.maxValue
+            font.pixelSize: 12
+            opacity: 0.9
+            Layout.alignment: Qt.AlignHCenter
+        }
+
+        Rectangle {
+            Layout.alignment: Qt.AlignHCenter
+            Layout.fillHeight: true
+            width: 26
+            radius: 6
+            border.width: 1
+            border.color: Qt.rgba(1, 1, 1, 0.18)
+
+            gradient: Gradient {
+                // must match shaders/dots.frag:dataColorRamp (high at top)
+                GradientStop { position: 0.00; color: Qt.rgba(1.00, 0.22, 0.10, 1.0) } // c3
+                GradientStop { position: 0.34; color: Qt.rgba(1.00, 0.92, 0.22, 1.0) } // c2
+                GradientStop { position: 0.67; color: Qt.rgba(0.10, 0.95, 0.35, 1.0) } // c1
+                GradientStop { position: 1.00; color: Qt.rgba(0.10, 0.75, 1.00, 1.0) } // c0
+            }
+        }
+
+        Label {
+            text: root.minValue
+            font.pixelSize: 12
+            opacity: 0.9
+            Layout.alignment: Qt.AlignHCenter
+        }
+    }
+}
+