[ui] Viewer: Add PhongImageViewer component

meshroom/ui/qml/Viewer/PhongImageViewer.qml

@@ -0,0 +1,48 @@
+import QtQuick
+import Utils 1.0
+
+import AliceVision 1.0 as AliceVision
+
+/**
+ * PhongImageViewer displays an Image (albedo + normal) with a given light direction.
+ * Shading is done using Blinn-Phong reflection model, material and light direction parameters available.
+ * Accept HdrImageToolbar controls (gamma / offset / channel).
+ *
+ * <!> Requires QtAliceVision plugin.
+ */
+
+AliceVision.PhongImageViewer {
+    id: root
+
+    width: sourceSize.width
+    height: sourceSize.height
+    visible: true
+
+    // paintedWidth / paintedHeight / imageStatus for compatibility with standard Image
+    property int paintedWidth: sourceSize.width
+    property int paintedHeight: sourceSize.height
+    property var imageStatus: {
+        if (root.status === AliceVision.PhongImageViewer.EStatus.LOADING) {
+            return Image.Loading
+        } else if (root.status === AliceVision.PhongImageViewer.EStatus.LOADING_ERROR ||
+                   root.status === AliceVision.PhongImageViewer.EStatus.MISSING_FILE) {
+            return Image.Error
+        } else if ((root.sourcePath === "") || (root.sourceSize.height <= 0) || (root.sourceSize.width <= 0)) {
+            return Image.Null
+        }
+
+        return Image.Ready
+    }
+
+    property string channelModeString : "rgba"
+    channelMode: {
+        switch (channelModeString) {
+            case "rgb": return AliceVision.PhongImageViewer.EChannelMode.RGB
+            case "r": return AliceVision.PhongImageViewer.EChannelMode.R
+            case "g": return AliceVision.PhongImageViewer.EChannelMode.G
+            case "b": return AliceVision.PhongImageViewer.EChannelMode.B
+            case "a": return AliceVision.PhongImageViewer.EChannelMode.A
+            default: return AliceVision.PhongImageViewer.EChannelMode.RGBA
+        }
+    }
+}