利用widget重构parkinglot

Road.cpp

@@ -0,0 +1,44 @@
+#include "Road.h"
+#include <QPainter>
+
+Road::Road(QWidget* parent, const int length, const direction dir)
+		:QWidget(parent), length(length), dir(dir)
+{
+	switch(dir)
+	{
+	case horizontal:
+		resize(length, 50);
+		setMinimumSize(length, 50);
+		setMaximumSize(length, 50);
+		break;
+	case vertical:
+		resize(50, length);
+		setMinimumSize(50, length);
+		setMaximumSize(50, length);
+		break;
+	}
+}
+
+void Road::paintEvent(QPaintEvent * event)
+{
+	QPainter painter(this);
+	painter.setBrush(Qt::white);
+	painter.setPen(Qt::white);
+	auto x = 0, y = 0;
+	if (dir == horizontal) {
+		while (x < length) {
+			painter.drawRect(x + 5, 20, 40, 10);
+			x += 50;
+		}
+	}
+	else {
+		while (y < length) {
+			painter.drawRect(20, y + 5, 10, 40);
+			y += 50;
+		}
+	}
+}
+
+Road::~Road()
+{
+}