initial commit

mapview/elements/MV2DElementFloorUnderlay.h

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+#ifndef MV2DELEMENTFLOORUNDERLAY_H
+#define MV2DELEMENTFLOORUNDERLAY_H
+
+
+#include "MV2DElement.h"
+#include "MapViewElementHelper.h"
+
+#include <Indoor/floorplan/v2/Floorplan.h>
+
+/**
+ * display e.g. a PNG-file below the map [as reference]
+ */
+class MV2DElementFloorUnderlay : public MV2DElement {
+
+private:
+
+	QImage img;
+	std::string tmpFile;
+	Floorplan::UnderlayImage* underlay;
+	BBox2 bbox;
+
+	int selPoint = -1;
+
+public:
+
+	/** ctor */
+	MV2DElementFloorUnderlay(Floorplan::UnderlayImage* underlay) : underlay(underlay) {
+		missing();
+	}
+
+	void missing() {
+		//img = QImage(QSize(64, 64), QImage::Format_ARGB32);
+		//img.fill(0xFF000000);
+		img = QImage("://res/icons/cross.png");
+	}
+
+	/** get the element's 3D bounding box */
+	BBox2 getBoundingBox() const override {
+		return bbox;
+	}
+
+	/** get the element's minimal distance (nearest whatsoever) to the given point */
+	float getMinDistanceXY(const Point2 p) const override {
+		(void) p;
+		return CFG::SEL_THRESHOLD_SIZE_PX;	// we do not know the distance from the image
+	}
+
+	virtual void onFocus() override {
+
+	}
+
+	virtual void onUnfocus() override {
+		selPoint = -1;	// clear selection
+	}
+
+	void paint(Painter& p) override {
+		(void) p;
+
+		if (tmpFile != underlay->filename) {
+			img = QImage(underlay->filename.c_str());
+			if (img.size().width() == 0) {
+				missing();
+			}
+			tmpFile = underlay->filename;
+		}
+
+
+
+		// map coordinates
+		float mx1 = underlay->anchor.x;
+		float my1 = underlay->anchor.y;
+		float mw = img.width() * underlay->scaleX;
+		float mh = img.height() * underlay->scaleY;
+		float mx2 = mx1+mw;
+		float my2 = my1+mh;
+
+		// screen coordinates
+		float sx1 = p.s.xms(mx1);
+		float sy1 = p.s.yms(my1);
+		float sx2 = p.s.xms(mx2);
+		float sy2 = p.s.yms(my2);
+		float sw = abs(sx1-sx2);
+		float sh = abs(sy1-sy2);
+
+		bbox = BBox2();
+		bbox.add(Point2(mx1, my1));
+		bbox.add(Point2(mx2, my2));
+
+
+		p.p->drawImage(QRectF(sx1, sy1-sh, sw, sh), img, QRectF(0,0,img.width(),img.height()));
+
+		// selected endpoint(s)?
+		if (hasFocus()) {
+			p.setPenBrush(Qt::NoPen, CFG::SEL_COLOR);
+			if (selPoint == 0) {p.drawCircle(bbox.getMin());}
+		}
+
+		// just focused?
+		if (hasFocus()) {
+			p.setPenBrush(Qt::black, Qt::NoBrush);
+			p.drawRect(mx1,my1,mx2,my2);
+			p.drawCircle(bbox.getMin());
+		}
+
+	}
+
+	virtual void mousePressed(MapView2D* v, const Point2 p) override {
+		(void) v;
+		(void) p;
+	}
+
+	virtual void mouseMove(MapView2D* v, const Point2 _p) override {
+		(void) v;
+		if (selPoint == -1) {return;}
+		const Point2 p = Scaler::snap(_p, CFG::MOVE_SNAP_SIZE_M);
+		if (selPoint == 0) {underlay->anchor = p;}
+	}
+
+	virtual void mouseReleased(MapView2D* v, const Point2 _p) override {
+		// select a new point on mouse-release (more robust than on mouse-press)
+		const float t = v->getScaler().sm(CFG::SEL_THRESHOLD_SIZE_PX);
+		const float l1 = _p.getDistance(bbox.getMin());
+		if		(l1 <= t)	{selPoint = 0;}
+		else				{selPoint = -1;}
+	}
+
+	virtual bool keyPressEvent(MapView2D* v, QKeyEvent *e) override {
+		(void) v;
+		(void) e;
+		return false;
+	}
+
+
+};
+
+#endif // MV2DELEMENTFLOORUNDERLAY_H