getting further... basic read-only Scene Graph model/widget

1 files changed, 60 insertions, 0 deletions

diff --git a/lsscenemodel.cpp b/lsscenemodel.cpp
new file mode 100644
index 0000000..7450368
--- /dev/null
+++ b/lsscenemodel.cpp
@@ -0,0 +1,60 @@
+#include "lsscenemodel.h"
+
+LSSceneModel::LSSceneModel(LYTLayout *layout, QObject *parent) :
+	QAbstractItemModel(parent)
+{
+	m_layout = layout;
+}
+
+
+QModelIndex LSSceneModel::index(int row, int column, const QModelIndex &parent) const {
+	if (!hasIndex(row, column, parent))
+		return QModelIndex();
+
+	if (!parent.isValid())
+		return createIndex(row, column, m_layout->rootPane);
+
+	// what's the parent..?
+	LYTPane *parentPane = (LYTPane*)parent.internalPointer();
+	LYTPane *pane = parentPane->children.at(row);
+	return createIndex(row, column, pane);
+}
+
+QModelIndex LSSceneModel::parent(const QModelIndex &child) const {
+	if (!child.isValid())
+		return QModelIndex();
+
+	LYTPane *childPane = (LYTPane*)child.internalPointer();
+	LYTPane *parentPane = childPane->parent;
+	if (parentPane) {
+		LYTPane *parentParentPane = parentPane->parent;
+		int index = parentParentPane ? parentParentPane->children.indexOf(parentPane) : 0;
+		return createIndex(index, 0, parentPane);
+	} else {
+		return QModelIndex();
+	}
+}
+
+int LSSceneModel::rowCount(const QModelIndex &parent) const {
+	if (!parent.isValid()) {
+		return 1; // the root pane
+	}
+
+	LYTPane *parentPane = (LYTPane*)parent.internalPointer();
+	return parentPane->children.count();
+}
+
+int LSSceneModel::columnCount(const QModelIndex &parent) const {
+	return 1;
+}
+
+QVariant LSSceneModel::data(const QModelIndex &index, int role) const {
+	LYTPane *pane = (LYTPane*)index.internalPointer();
+	if (pane) {
+		switch (role) {
+		case Qt::DisplayRole:
+			return pane->name;
+		}
+	}
+	return QVariant();
+}