/**
* 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();
}
$cr2->lineTo(0, 5 * $patheight / 6.0); $cr2->setSourceRgb(0, 1, 0); $cr2->stroke(); $cr2->moveTo(5 * $patwidth / 6.0, 0); $cr2->lineTo($patwidth, 0); $cr2->lineTo($patwidth, $patheight / 6.0); $cr2->setSourceRgb(0, 0, 1); $cr2->stroke(); $cr2->moveTo(5 * $patwidth / 6.0, $patheight); $cr2->lineTo($patwidth, $patheight); $cr2->lineTo($patwidth, 5 * $patheight / 6.0); $cr2->setSourceRgb(1, 1, 0); $cr2->stroke(); $cr2->setSourceRgb(0.5, 0.5, 0.5); $cr2->setLineWidth($patwidth / 10.0); $cr2->moveTo(0, $patheight / 4.0); $cr2->lineTo($patwidth, $patheight / 4.0); $cr2->stroke(); $cr2->moveTo($patwidth / 4.0, 0); $cr2->lineTo($patwidth / 4.0, $patwidth); $cr2->stroke(); $pattern = new CairoSurfacePattern($pat_surface); $mat = new CairoMatrix(); $mat->scale(2, 1.5); $mat->rotate(1); $mat->translate(-$patwidth / 4.0, -$patwidth / 2.0); $pattern->setMatrix($mat); $pattern->setExtend(CairoExtend::NONE); $con->setSource($pattern); $con->paint(); $sur->writeToPng(dirname(__FILE__) . "/meta-surface-pattern-php.png");
<?php
$sur = new CairoImageSurface(CairoFormat::ARGB32, 10, 10);
$con = new CairoContext($sur);
$data = "";
for ($i = 0; $i < 4; $i++) {
$data = $data . chr(0x80);
$data = $data . chr(0x0);
$data = $data . chr(0x0);
$data = $data . chr(0x0);
}
$s = new CairoImageSurface(CairoFormat::ARGB32, 1, 1);
$s->createForData(data, CairoFormat::ARGB32, 2, 2, 8);
$pat = new CairoSurfacePattern($s);
$con->setSourceRgb(1, 0, 0);
$con->save();
$con->translate(2, 2);
$con->mask($pat);
$con->restore();
$mat = new CairoMatrix();
$mat->translate(-4, -4);
$pat->setMatrix($mat);
$con->mask($pat);
$con->translate(2, 2);
$con->mask($pat);
$sur->writeToPng(dirname(__FILE__) . "/mask-ctm-php.png");
?>
<?php $size = 40; $sur = new CairoImageSurface(CairoFormat::ARGB32, $size, $size); $con = new CairoContext($sur); $con->setSourceRgb(1, 1, 1); /* White */ $con->paint(); $con->moveTo($size, 0); $con->lineTo($size, $size); $con->lineTo(0, $size); $con->setSourceRgb(0, 0, 0); $con->fill(); /* Create a pattern with the target surface as the source, * offset by $size/2 */ $pattern = new CairoSurfacePattern($sur); $matrix = new CairoMatrix(); $matrix->translate(-$size / 2, -$size / 2); $pattern->setMatrix($matrix); $con->setSource($pattern); /* Copy two rectangles from the upper-left quarter of the image to * the lower right. It will work if we use $con->fill(), but the * $con->clip() $con->paint() combination fails because the clip * on the surface as a destination affects it as the source as * well. */ $con->rectangle(2 * $size / 4, 2 * $size / 4, $size / 4, $size / 4); $con->rectangle(3 * $size / 4, 3 * $size / 4, $size / 4, $size / 4); $con->clip(); $con->paint(); $sur->writeToPng(dirname(__FILE__) . '/self-copy.png');
function render_svg($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];
}
}
$ext = $con->textExtents($str);
$sf = $con->getScaledFont();
$sext = $sf->textExtents("text");
$lw = $con->getLineWidth();
$con->rectangle($x + $ext["x_bearing"] - $lw / 2, $y + $ext["y_bearing"] - $lw / 2, $ext["width"] + $lw, $ext["height"] + $lw);
$con->stroke();
$con->moveTo($x, $y);
$con->showText($str);
$con->restore();
}
$sur = new CairoImageSurface(CairoFormat::ARGB32, 38, 34);
$con = new CairoContext($sur);
$con->setSourceRgb(1, 1, 1);
$con->paint();
$con->selectFontFace("Bitstream Vera Sans");
$con->setFontSize(12);
$con->translate(4, 4);
$con->setLineWidth(1);
$ext = $con->textExtents("text");
$con->setSourceRgb(0, 0, 0);
box_text("text", 0, -$ext["y_bearing"]);
$mat = new CairoMatrix();
$mat->translate(6, 16);
$mat->scale(12, 12);
$con->setFontMatrix($mat);
$con->setSourceRgb(0, 0, 1);
box_text("text", 0, -$ext["y_bearing"]);
$sur->writeToPng(dirname(__FILE__) . "/font-matrix-translation-php.png");
?>
