protected SVGPoint getEventPoint(NativeEvent event) { SVGElement svg = m_svg.cast(); SVGPoint p = svg.createSVGPoint(); p.setX(event.getClientX()); p.setY(event.getClientY()); return p; }
private void updateScale(double oldScale, double newScale, SVGElement svg, int cx, int cy) { double zoomFactor = newScale / oldScale; // (x in new coord system - x in old coord system)/x coordinate SVGGElement g = m_svgViewPort.cast(); if (cx == 0) { cx = (int) (Math.ceil(svg.getOffsetWidth() / 2.0) - 1); } if (cy == 0) { cy = (int) (Math.ceil(svg.getOffsetHeight() / 2.0) - 1); } SVGPoint p = svg.createSVGPoint(); p.setX(cx); p.setY(cy); p = p.matrixTransform(g.getCTM().inverse()); SVGMatrix m = svg.createSVGMatrix() .translate(p.getX(), p.getY()) .scale(zoomFactor) .translate(-p.getX(), -p.getY()); SVGMatrix ctm = g.getCTM().multiply(m); consoleLog("zoomFactor: " + zoomFactor + " oldScale: " + oldScale + " newScale:" + newScale); D3.d3() .select(m_svgViewPort) .transition() .duration(1000) .attr("transform", matrixTransform(ctm)); }
@Override public void move() { Event event = D3.getEvent().cast(); SVGPoint p = getEventPoint(event).matrixTransform(m_stateTf); SVGElement svg = getContainerElement().cast(); SVGGElement g = getDraggableElement().cast(); SVGRect gBox = g.getBBox(); SVGMatrix m = m_stateTf .inverse() .translate(p.getX() - m_stateOrigin.getX(), p.getY() - m_stateOrigin.getY()); double mapWidth = gBox.getWidth() * m.getA(); double mapHeight = gBox.getHeight() * m.getA(); double boundaryX = calculateBoundsX(mapWidth, svg.getOffsetWidth(), m.getE()); double boundaryY = calculateBoundsY(mapHeight, svg.getOffsetHeight(), m.getF()); String matrixTransform = "matrix(" + m.getA() + ", " + m.getB() + ", " + m.getC() + ", " + m.getD() + ", " + boundaryX + ", " + boundaryY + ")"; getDraggableElement().setAttribute("transform", matrixTransform); // Updating the reference map // TODO: this needs to be reworked a little its off double viewPortWidth = (getContainerElement().getOffsetWidth() / m.getA()) * 0.4; double viewPortHeight = (getContainerElement().getOffsetHeight() / m.getA()) * 0.4; m_referenceMapViewport.setAttribute("width", "" + viewPortWidth); m_referenceMapViewport.setAttribute("height", "" + viewPortHeight); m_referenceMapViewport.setAttribute("x", "" + (-boundaryX * 0.4)); m_referenceMapViewport.setAttribute("y", "" + (-boundaryY * 0.4)); }
private SVGPoint getPoint(int x, int y) { SVGPoint p = getSVGElement().createSVGPoint(); p.setX(x); p.setY(y); return p; }