/**
* Draws text on the image
* @param Point $leftTop Point of the upper left corner
* @param Color $color
* @param string $text
* @return null
*/
public function drawText(Point $leftTop, Color $color, $text)
{
$color = $this->allocateColor($color);
imageString($this->resource, 2, $leftTop->getX(), $leftTop->getY(), $text, $color);
}
/**
* Checks if this node points to the same point as the provided node
* @return boolean True if both nodes have the same point, false otherwise
*/
public function equals(Node $node)
{
return $this->point->equals($node->point);
}
/**
* Gets the actual location of the field in the image and updates the begin and end point of the connection
* @param zibo\library\diagram\Diagram $diagram The diagram we're drawing
* @return null
*/
public function preDraw(Diagram $diagram)
{
$grid = $diagram->getGrid();
$beginModel = $grid->getDiagramObject($this->begin);
$endModel = $grid->getDiagramObject($this->end);
// Get the field points left or right of the model boxes
$beginFieldPoint = $beginModel->getFieldPoint($this->beginFieldName);
$endFieldPoint = $endModel->getFieldPoint($this->endFieldName);
$beginWidth = $beginModel->getDimension()->getWidth();
$endWidth = $endModel->getDimension()->getWidth();
$beginX = $beginFieldPoint->getX();
$endX = $endFieldPoint->getX();
$beginIsLeft = true;
$endIsLeft = true;
if ($beginX < $endX) {
if ($beginX + $beginWidth < $endX) {
$beginX += $beginWidth;
$beginIsLeft = false;
}
} else {
if ($beginX > $endX + $endWidth) {
$endX += $endWidth;
$endIsLeft = false;
}
}
$this->beginPoint = new Point($beginX, $beginFieldPoint->getY());
$this->endPoint = new Point($endX, $endFieldPoint->getY());
// Now get a point in the grid 2 cells away from the model box
$margin = $diagram->getMargin();
$beginGridPoint = $grid->getGridPoint(new Point($this->beginPoint->getX() - $margin, $this->beginPoint->getY() - $margin));
$endGridPoint = $grid->getGridPoint(new Point($this->endPoint->getX() - $margin, $this->endPoint->getY() - $margin));
$beginGridX = $beginGridPoint->getX();
$beginGridY = $beginGridPoint->getY();
$endGridX = $endGridPoint->getX();
$endGridY = $endGridPoint->getY();
$needsUp = $grid->needsUp($beginGridY, $endGridY);
if ($needsUp === true) {
$beginGridY--;
if ($beginGridY != $endGridY) {
$endGridY++;
}
} elseif ($needsUp === false) {
$beginGridY++;
if ($beginGridY != $endGridY) {
$endGridY--;
}
}
$offset = 2;
if ($beginIsLeft) {
$beginGridX -= $offset;
} else {
$beginGridX += $offset;
}
if ($endIsLeft) {
$endGridX -= $offset;
} else {
$endGridX += $offset;
}
$beginGridX = max($beginGridX, -1);
$beginGridY = max($beginGridY, -1);
$endGridX = max($endGridX, -1);
$endGridY = max($endGridY, -1);
$this->begin = new Point($beginGridX, $beginGridY);
$this->end = new Point($endGridX, $endGridY);
}
/**
* Draws the object on the provided image
* @param zibo\library\image\Image $image The image to draw upon
* @param zibo\library\image\Point $point The top left corner to start drawing
* @return null
*/
public function draw(Image $image, Point $point)
{
$x = $point->getX();
$y = $point->getY();
$width = $this->dimension->getWidth();
$height = $this->dimension->getHeight();
$textX = $x + $this->paddingLeft;
// draw the box
$image->fillRoundedRectangle($point, $this->dimension, 3, $this->backgroundColor);
$image->drawRoundedRectangle($point, $this->dimension, 3, $this->frontColor);
// draw the title bar
$title = $this->meta->getName();
// . ($this->isLinkModel ? ' (L)' : '');
$image->drawText(new Point($textX, $point->getY() + $this->paddingTop), $this->frontColor, $title);
$lineY = $y + 2 * $this->paddingTop + self::CHARACTER_HEIGHT + $this->paddingBottom;
$image->drawLine(new Point($x, $lineY), new Point($x + $width, $lineY), $this->frontColor);
// draw the fields
$fieldY = $lineY + $this->paddingTop;
$fields = $this->meta->getFields();
foreach ($fields as $fieldName => $field) {
$label = '+ ' . $field->getName() . ': ' . $this->getFieldType($field);
$this->fieldPoints[$fieldName] = new Point($x, ceil($fieldY + $this->paddingTop + 1));
$image->drawText(new Point($textX, $fieldY), $this->frontColor, $label);
$fieldY += $this->paddingTop + self::CHARACTER_HEIGHT;
}
}
/**
* Checks of the provided object can be placed on the provided x and y coordinates
* @param DiagramObject $object Object to check
* @param zibo\library\image\Point The top left point in the grid for the object
* @return boolean True if the object can be placed on the provided point, false otherwise
*/
public function isFreeForDiagramObject(DiagramObject $object, Point $point)
{
$dimension = $object->getDimension();
$x = $point->getX();
$y = $point->getY();
$margin = 2 * $this->objectMargin;
$cellsX = ceil($dimension->getWidth() / $this->cellDimension->getWidth()) + $margin;
$cellsY = ceil($dimension->getHeight() / $this->cellDimension->getHeight()) + $margin;
for ($i = 0; $i < $cellsX; $i++) {
$loopX = $i + $x - $this->objectMargin;
if (!array_key_exists('' . $loopX, $this->grid)) {
continue;
}
for ($j = 0; $j < $cellsY; $j++) {
$loopY = $j + $y - $this->objectMargin;
if (!array_key_exists('' . $loopY, $this->grid[$loopX])) {
continue;
}
if ($this->grid[$loopX][$loopY]) {
throw new DiagramException('Could not set diagram object ' . $object->getId() . ' to ' . $point . ': (' . $loopX . ', ' . $loopY . ') is occupied by ' . $this->grid[$loopX][$loopY]);
return false;
}
}
}
return true;
}
