/**
* Get the composited canvas.
*
*/
public function getCompositeCanvas()
{
// Create our target canvas
$canvas = new Canvas($this->width, $this->height, 0x0);
$crect = $canvas->getRect();
// Precalculate some stuff for performance
$samesize = [];
foreach ($this->layers as $i => $layer) {
$samesize[$i] = $layer->position == $layer->canvas->getRect();
}
// Process the composite canvas
for ($n = 0; $n < $this->width; $n++) {
for ($m = 0; $m < $this->height; $m++) {
if ($this->background) {
$co = $this->background->getPixel($n, $m);
} else {
$co = 0x0;
}
foreach ($this->layers as $i => $layer) {
//printf("Pre [%d] (mode=%d): 0x%06x ", $i, $layer->blend, $co);
if ($layer->position->isXYWithin($n, $m)) {
$co = $this->blend($co, $layer->canvas->getPixel($n, $m), $layer->blend, $layer->opacity);
}
//printf("Post: 0x%06x\n", $co);
}
$canvas->setPixel($n, $m, $co);
}
}
return $canvas;
}
public function test()
{
$this->status = "Setting up";
$max = 5 * LayeredCanvas::NUM_BLEND_MODES;
$this->doProgress(0, $max);
// Set up a layered canvas for compositing our image
$sw = 320;
// $this->rect->w;
$ssw = $sw / 5;
$sh = 240;
$c = new Canvas($sw * 4, $sh * 4, 0);
$f = new BitmapFont(3);
$f2 = new BitmapFont(0);
$fb = new BitmapFont(7);
$fb->drawText($c, $c->width - $sw + 20, $c->height - 50, "Cherry LayeredCanvas Demo", 0xffffff);
$f->drawText($c, $c->width - $sw + 20, $c->height - 30, "Showing all " . LayeredCanvas::NUM_BLEND_MODES . " available blend modes", 0xffffff);
// Preload our canvases
$c2 = Canvas::createFromFile("320x240-1.png");
$c1 = Canvas::createFromFile("320x240-2.png");
$cs1 = new Canvas($ssw, $sh);
$cs2 = new Canvas($ssw, $sh);
for ($blend = 0; $blend < LayeredCanvas::NUM_BLEND_MODES; $blend++) {
$this->status = "Rendering " . LayeredCanvas::$blendmodes[$blend];
$tslice = [];
for ($slice = 0; $slice < 5; $slice++) {
$c1->draw($cs1, $cs1->getRect(), new Rect($ssw * $slice, 0, $ssw, $sh));
$c2->draw($cs2, $cs2->getRect(), new Rect($ssw * $slice, 0, $ssw, $sh));
$lc = new LayeredCanvas($ssw, $sh, $cs1);
$lc->addLayer($cs2, $cs2->getRect(), $blend, $slice * 0.25);
$tstart = microtime(true);
$co = $lc->getCompositeCanvas();
$tslice[] = (double) (microtime(true) - $tstart);
$col = $blend % 4;
$row = floor($blend / 4);
$ostr = sprintf("%d%%", max(0, min(100, $slice * 25)));
$f2->drawTextUp($co, $ssw - 11, $sh - 4, $ostr, 0x0);
$f2->drawTextUp($co, $ssw - 12, $sh - 5, $ostr, 0xffffff);
$co->draw($c, new Rect($col * $sw + $ssw * $slice, $row * $sh, $ssw, $sh));
$this->doProgress($blend * 5 + $slice, $max);
}
$modestr = sprintf("%s", LayeredCanvas::$blendmodes[$blend]);
$f->drawText($c, $col * $sw + 6, $row * $sh + 6, $modestr, 0x0);
$f->drawText($c, $col * $sw + 5, $row * $sh + 5, $modestr, 0xffffff);
$tslice = array_sum($tslice);
$timestr = sprintf("Mode %d", $blend);
$f2->drawText($c, $col * $sw + 6, $row * $sh + 21, $timestr, 0x0);
$f2->drawText($c, $col * $sw + 5, $row * $sh + 20, $timestr, 0xffffff);
}
$this->status = "Done";
$this->doProgress($max, $max, true);
$c->save("composite.png");
return;
}
function __construct($url, $width)
{
if (!$url) {
throw new \UnexpectedValueException("Thumbalizr: Invalid URL");
}
if (strpos($url, "://") === false) {
$url = "http://" . $url;
}
$urlenc = urlencode($url);
$apiurl = "http://api.thumbalizr.com/?url={$url}&width={$width}";
\debug("Thumbalizr: %s", "Querying {$apiurl}");
$img = fopen($apiurl, "rb");
parent::__construct();
$this->loadString(stream_get_contents($img));
}
public function drawTextUp(Canvas $image, $x, $y, $text, $color)
{
\imagestringup($image->himage, $this->font, $x, $y, $text, $image->map($color));
}
public function saveComposite($filename)
{
// Measure the image and create an image 32x32 pixels wider than the source
$ir = $this->img->measure();
$wi = Canvas::createTrueColor($ir->w + SPECTRUM_SIZE + 4, $ir->h + SPECTRUM_SIZE + 4);
// Draw the image into the new working image offset by 32x32 puxels
$srect = $this->img->measure();
$drect = $this->img->measure();
$drect->move(SPECTRUM_SIZE + 4, SPECTRUM_SIZE + 4);
$this->img->draw($wi, $drect, $srect);
$wi->drawLine(0, $drect->y - 2, $wi->width, $drect->y - 2, [255, 255, 255]);
$wi->drawLine($drect->x - 2, 0, $drect->x - 2, $wi->height, [255, 255, 255]);
$wi->drawFilledRect(0, 0, $drect->x - 4, $drect->y - 4, [64, 64, 64]);
$this->drawSpectrumX($wi, $this->xbuckets, $drect);
$this->drawSpectrumY($wi, $this->ybuckets, $drect);
// Save the working image
$wi->save($filename);
}
#!/usr/bin/php
<?php
require_once "../../share/include/cherryphp";
use Cherry\Graphics\Canvas;
if (!file_exists("image.png")) {
die("Make sure a file named image.png is in the same directory.\n");
}
$c = new Canvas();
$c->load('image.png');
$c2 = clone $c;
$c->resize(1024, 1024);
$c->save('image1.png');
$c2->resize(1024, 1024, true);
$c2->save('image2.png');
public static function createFromFile($filename)
{
$c = new Canvas();
$c->load($filename);
return $c;
}