/**
* Function: updateBoundingBox
*
* Updates the bounding box in the given cell state.
*/
function updateBoundingBox($state)
{
// Gets the cell bounds and adds shadows and markers
$rect = new mxRectangle($state->x, $state->y, $state->width, $state->height);
$style = $state->style;
// Adds extra pixels for the marker and stroke assuming
// that the border stroke is centered around the bounds
// and the first pixel is drawn inside the bounds
$strokeWidth = max(1, mxUtils::getNumber($style, mxConstants::$STYLE_STROKEWIDTH, 1) * $this->scale);
$strokeWidth -= max(1, $strokeWidth / 2);
if ($this->graph->model->isEdge($state->cell)) {
$ms = 0;
if (isset($style[mxConstants::$STYLE_ENDARROW]) || isset($style[mxConstants::$STYLE_STARTARROW])) {
$ms = round(mxConstants::$DEFAULT_MARKERSIZE * $this->scale);
}
// Adds the strokewidth
$rect->grow($ms + $strokeWidth);
// Adds worst case border for an arrow shape
if (mxUtils::getValue($style, mxConstants::$STYLE_SHAPE) == mxConstants::$SHAPE_ARROW) {
$rect->grow(mxConstants::$ARROW_WIDTH / 2);
}
} else {
$rect->grow($strokeWidth);
}
// Adds extra pixels for the shadow
if (mxUtils::getValue($style, mxConstants::$STYLE_SHADOW, false) == true) {
$rect->width += mxConstants::$SHADOW_OFFSETX;
$rect->height += mxConstants::$SHADOW_OFFSETY;
}
// Adds oversize images in labels
if (mxUtils::getValue($style, mxConstants::$STYLE_SHAPE) == mxConstants::$SHAPE_LABEL) {
if (mxUtils::getValue($style, mxConstants::$STYLE_IMAGE) != null) {
$w = mxUtils::$getValue($style, mxConstants::$STYLE_IMAGE_WIDTH, mxConstants::$DEFAULT_IMAGESIZE) * $this->scale;
$h = mxUtils::$getValue($style, mxConstants::$STYLE_IMAGE_HEIGHT, mxConstants::$DEFAULT_IMAGESIZE) * $this->scale;
$x = $state->x;
$y = 0;
$imgAlign = mxUtils::getValue($style, mxConstants::$STYLE_IMAGE_ALIGN, mxConstants::$ALIGN_CENTER);
$imgValign = mxUtils::getValue(style, mxConstants::$STYLE_IMAGE_VERTICAL_ALIGN, mxConstants::$ALIGN_MIDDLE);
if ($imgAlign == mxConstants::$ALIGN_RIGHT) {
$x += $state->width - $w;
} else {
if ($imgAlign == mxConstants::$ALIGN_CENTER) {
$x += ($state->width - $w) / 2;
}
}
if ($imgValign == mxConstants::$ALIGN_TOP) {
$y = $state->y;
} else {
if ($imgValign == mxConstants::$ALIGN_BOTTOM) {
$y = $state->y + $state->height - $h;
} else {
$y = $state->y + ($state->height - $h) / 2;
}
}
$rect->add(new mxRectangle($x, $y, $w, $h));
}
}
// No need to add rotated rectangle bounds here because
// GD does not support rotation
// Unifies the cell bounds and the label bounds
$rect->add($state->labelBounds);
$state->boundingBox = $rect;
return $rect;
}
/**
* Function: getPerimeterBounds
*
* Returns the <mxRectangle> that should be used as the perimeter of the
* cell.
*/
function getPerimeterBounds($border = 0)
{
$bounds = new mxRectangle($this->x, $this->y, $this->width, $this->height);
if ($border != 0) {
$bounds->grow($border);
}
return $bounds;
}