Mouse detection

gridpreview.h

@@ -3,25 +3,46 @@
 
 #include <QWidget>
 #include <QPainter>
+#include <QMouseEvent>
+#include <iostream>
 #include "line.h"
 
 class GridPreview : public QWidget
 {
     Q_OBJECT
-public:
-    explicit GridPreview(QWidget *parent = nullptr);
-    void setSize(int newWidth, int newHeight);
-    void addLine(Line &line);
-    void removeLine(int index);
-    QString toLuaTable();
-    void paintEvent(QPaintEvent* event);
-    QColor colorFromString(QString color);
-private:
     int width = 5, height = 5;
     QVector<Line> lines {};
     QMap<QString, QColor> colorMap;
     const QString tableTemplate = "return {\n    width = %1,\n    height = %2,\n    lines = {\n%3\n    }\n}";
+
+    bool mouseCaptured = false;
+public:
+    explicit GridPreview(QWidget *parent = nullptr);
+    void setSize(int newWidth, int newHeight);
+
+    void addLine(Line &line);
+    void removeLine(int index);
+
+    void setLineColor(int index, QString color);
+    void setLineStartPoint(int index, int x, int y);
+    void setLineEndPoint(int index, int x, int y);
+
+    int getWidth();
+    int getHeight();
+    const Line& getLine(int index);
+
+    const QString toLuaTable();
+    void paintEvent(QPaintEvent* event);
+    const QColor colorFromString(const QString color);
+
+    void mouseMoveEvent(QMouseEvent* event);
+    void mousePressEvent(QMouseEvent* event);
+    void mouseReleaseEvent(QMouseEvent* event);
+
+    const QPoint localMousePosition(QMouseEvent* event);
+    const QPoint snapToGrid(int x, int y);
 signals:
+    void updatedContents();
 };
 
 #endif // GRIDPREVIEW_H