added perspective option to corner pin

io/qpainterwrapper.cpp

@@ -0,0 +1,43 @@
+#include "qpainterwrapper.h"
+
+#include <QPainter>
+#include "debug.h"
+
+// exposes several QPainter functions to QJSEngine
+
+QPainterWrapper painter_wrapper;
+
+QPainterWrapper::QPainterWrapper() {}
+
+QColor get_color_from_string(const QString& s) {
+	dout << s;
+
+	// workaround for alpha
+	if (s.at(0) == '#' && s.length() == 9) {
+		QColor color(s.left(7));
+		color.setAlpha(s.mid(7).toInt(NULL, 16));
+		return color;
+	} else {
+		return QColor(s);
+	}
+}
+
+void QPainterWrapper::fill(const QString& c) {
+	img->fill(get_color_from_string(c));
+}
+
+void QPainterWrapper::fillRect(int x, int y, int width, int height, const QString& brush) {
+	painter->fillRect(x, y, width, height, get_color_from_string(brush));
+}
+
+void QPainterWrapper::drawRect(int x, int y, int width, int height) {
+	painter->drawRect(x, y, width, height);
+}
+
+void QPainterWrapper::setPen(const QString& pen) {
+	painter->setPen(get_color_from_string(pen));
+}
+
+void QPainterWrapper::setBrush(const QString& brush) {
+	painter->setBrush(get_color_from_string(brush));
+}