/**
* Draw an image
*
* The image will be inlined in the SVG document using data URL scheme. For
* this the mime type and base64 encoded file content will be merged to
* URL.
*
* @param mixed $file Image file
* @param ezcGraphCoordinate $position Top left position
* @param mixed $width Width of image in destination image
* @param mixed $height Height of image in destination image
* @return void
*/
public function drawImage($file, ezcGraphCoordinate $position, $width, $height)
{
$this->initiliazeSurface();
// Ensure given bitmap is a PNG image
$data = getimagesize($file);
if ($data[2] !== IMAGETYPE_PNG) {
throw new Exception('Cairo only has support for PNGs.');
}
// Create new surface from given bitmap
$imageSurface = CairoImageSurface::createFromPng($file);
// Create pattern from source image to be able to transform it
$pattern = new CairoSurfacePattern($imageSurface);
// Scale pattern to defined dimensions and move it to its destination position
$matrix = CairoMatrix::multiply($move = CairoMatrix::initTranslate(-$position->x, -$position->y), $scale = CairoMatrix::initScale($data[0] / $width, $data[1] / $height));
$pattern->setMatrix($matrix);
// Merge surfaces
$this->context->setSource($pattern);
$this->context->rectangle($position->x, $position->y, $width, $height);
$this->context->fill();
}
function render_svg($filepath, $w, $h, DOMElement $node)
{
static $svgRenderCache = array();
if (!isset($svgRenderCache[$filepath . $w . $h])) {
$filename = tempnam(dirname($filepath), "ca_dompdf_img_");
$svg = file_get_contents($filepath);
$renderSupersample = DOMPDF_SVG_SUPERSAMPLE;
$rsvg = rsvg_create($svg);
$dim = $rsvg->getDimensions();
if ($node) {
$viewBox = explode(' ', $node->getAttribute('viewbox'));
if (count($viewBox) == 4) {
list($innerx, $innery, $innerwidth, $innerheight) = $viewBox;
} else {
list($innerx, $innery, $innerwidth, $innerheight) = [0, 0, $dim['width'], $dim['height']];
}
} else {
list($innerx, $innery, $innerwidth, $innerheight) = [0, 0, $dim['width'], $dim['height']];
}
$scaleW = $w / $innerwidth;
$scaleH = $h / $innerheight;
$matrixScale = min($scaleW, $scaleH);
$csf = cairo_image_surface_create(CairoFormat::ARGB32, floor($w * $renderSupersample), floor($h * $renderSupersample));
$cctx = new CairoContext($csf);
$cctx->setMatrix(CairoMatrix::initScale($renderSupersample * $matrixScale, $renderSupersample * $matrixScale));
$cctx->translate(-$innerx, $innery);
$rsvg->render($cctx);
$csf->writeToPng($filename);
return $svgRenderCache[$filepath . $w . $h] = $filename;
} else {
return $svgRenderCache[$filepath . $w . $h];
}
}
