Function imageToBBox

test/jasmine/assets/domain_ref_components.js:396–444

(layout, img)

}

function imageToBBox(layout, img) {
    var bbox = {};
    // these will be pixels from the bottom of the plot and will be manipulated
    // below to be compatible with the SVG bounding box
    var x0;
    var x1;
    var y0;
    var y1;
    switch(img.xanchor) {
        case 'left':
            x0 = mapAROCoordToPixel(layout, 'xref', img, 'x', undefined, true);
            x1 = mapAROCoordToPixel(layout, 'xref', img, 'x', img.sizex, true);
            break;
        case 'right':
            x0 = mapAROCoordToPixel(layout, 'xref', img, 'x', -img.sizex, true);
            x1 = mapAROCoordToPixel(layout, 'xref', img, 'x', undefined, true);
            break;
        case 'center':
            x0 = mapAROCoordToPixel(layout, 'xref', img, 'x', -img.sizex * 0.5, true);
            x1 = mapAROCoordToPixel(layout, 'xref', img, 'x', img.sizex * 0.5, true);
            break;
        default:
            throw 'Bad xanchor: ' + img.xanchor;
    }
    switch(img.yanchor) {
        case 'bottom':
            y0 = mapAROCoordToPixel(layout, 'yref', img, 'y', undefined, true);
            y1 = mapAROCoordToPixel(layout, 'yref', img, 'y', img.sizey, true);
            break;
        case 'top':
            y0 = mapAROCoordToPixel(layout, 'yref', img, 'y', -img.sizey, true);
            y1 = mapAROCoordToPixel(layout, 'yref', img, 'y', undefined, true);
            break;
        case 'middle':
            y0 = mapAROCoordToPixel(layout, 'yref', img, 'y', -img.sizey * 0.5, true);
            y1 = mapAROCoordToPixel(layout, 'yref', img, 'y', img.sizey * 0.5, true);
            break;
        default:
            throw 'Bad yanchor: ' + img.yanchor;
    }
    bbox.x = x0;
    bbox.width = x1 - x0;
    // done this way because the pixel value of y1 will be smaller than the
    // pixel value x0 if y1 > y0 (because of how SVG draws relative to the top
    // of the screen)
    bbox.y = y1;
    bbox.height = y0 - y1;
    return bbox;
}

function coordsEq(a, b) {
    if(a && b) {