/**
* Render text depending of font type and available font extensions
*
* @param string $id
* @param string $text
* @param string $font
* @param ezcGraphColor $color
* @param ezcGraphCoordinate $position
* @param float $size
* @param float $rotation
* @return void
*/
protected function renderText($text, $font, ezcGraphColor $color, ezcGraphCoordinate $position, $size, $rotation = null)
{
$this->context->selectFontFace($font, CairoFontSlant::NORMAL, CairoFontWeight::NORMAL);
$this->context->setFontSize($size);
// Store current state of context
$this->context->save();
$this->context->moveTo(0, 0);
if ($rotation !== null) {
// Move to the center
$this->context->translate($rotation->getCenter()->x, $rotation->getCenter()->y);
// Rotate around text center
$this->context->rotate(deg2rad($rotation->getRotation()));
// Center the text
$this->context->translate($position->x - $rotation->getCenter()->x, $position->y - $rotation->getCenter()->y - $size * 0.15);
} else {
$this->context->translate($position->x, $position->y - $size * 0.15);
}
$this->context->newPath();
$this->getStyle($color, true);
$this->context->showText($text);
$this->context->stroke();
// Restore state of context
$this->context->restore();
}
<?php
$sur = new CairoImageSurface(CairoFormat::ARGB32, 10, 10);
$con = new CairoContext($sur);
$con->setSourceRgb(0, 0, 1);
$con->paint();
$con->resetClip();
$con->clip();
$con->translate(0.5, 0.5);
$con->setSourceRgb(0, 1, 0);
$con->rectangle(0, 0, 10, 10);
$con->fillPreserve();
$con->setSourceRgb(1, 0, 0);
$con->stroke();
$con->selectFontFace("Bitstream Vera Sans", CairoFontSlant::NORMAL, CairoFontWeight::NORMAL);
$con->moveTo(0, 10);
$con->showText("cairo");
$sur->writeToPng(dirname(__FILE__) . "/clip-empty-php.png");
<?php
$width = 247;
$height = 26;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $width, $height);
$con = new CairoContext($sur);
$con->selectFontFace("6x13.pcf");
$con->setFontSize(11.5);
$fo = new CairoFontOptions();
$fo->setHintMetrics(CairoHintMetrics::METRICS_ON);
$con->setFontOptions($fo);
$fe = $con->fontExtents();
$con->moveTo(1, $fe["ascent"] - 1);
$con->setSourceRgb(0, 0, 1);
$fo->setHintStyle(Cairo::HINT_STYLE_NONE);
$con->setFontOptions($fo);
$con->showText("the ");
$fo->setHintStyle(Cairo::HINT_STYLE_SLIGHT);
$con->setFontOptions($fo);
$con->showText("quick ");
$fo->setHintStyle(Cairo::HINT_STYLE_MEDIUM);
$con->setFontOptions($fo);
$con->showText("brown");
$fo->setHintStyle(Cairo::HINT_STYLE_FULL);
$con->setFontOptions($fo);
$con->showText(" fox");
$con->textPath(" jumps over a lazy dog");
$con->fill();
$con->translate($width, $height);
$con->rotate(M_PI);
$con->moveTo(1, $fe["height"] - $fe["descent"] - 1);
<?php
$width = 16;
$height = 16;
$pad = 2;
$noperator = 1 + CairoOperator::SATURATE - CairoOperator::CLEAR;
$imagewidth = $noperator * ($width + $pad) + $pad;
$imageheight = 4 * ($height + $pad) + $pad;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $imagewidth, $imageheight);
$con = new CairoContext($sur);
$con->selectFontFace("Bitstream Vera Sans");
$con->setFontSize(0.9 * $height);
for ($i = 0; $i < 4; $i++) {
for ($op = CairoOperator::CLEAR; $op < $noperator; $op++) {
$x = $op * ($width + $pad) + $pad;
$y = $i * ($height + $pad) + $pad;
$con->save();
$pat = new CairoLinearGradient($x + $width, $y, $x, $y + $height);
$pat->addColorStopRgba(0.2, 0, 0, 1, 1);
$pat->addColorStopRgba(0.8, 0, 0, 1, 0);
$con->setSource($pat);
$con->rectangle($x, $y, $width, $height);
$con->fill();
$con->setOperator($op);
$con->setSourceRgb(1, 0, 0);
$con->moveTo($x, $y);
$con->lineTo($x + $width, $y);
$con->lineTo($x, $y + $height);
$con->clip();
switch ($i) {
case 0:
<?php
$char = 'Cairo';
$sur = new CairoImageSurface(0, 500, 500);
$con = new CairoContext($sur);
$con->selectFontFace('Sans');
$con->setFontSize(100);
$ext = $con->textExtents($char);
$x = 25.0;
$y = 150.0;
$con->moveTo($x, $y);
$con->showText($char);
$con->setSourceRgba(1, 0.2, 0.2, 0.6);
$con->setLineWidth(6.0);
$con->arc($x, $y, 10, 0, 2 * 3.14);
$con->fill();
$con->moveTo($x, $y);
$con->relLineTo(0, -1 * $ext['height']);
$con->relLineTo($ext['width'], 0);
$con->relLineTo($ext['x_bearing'], -1 * $ext['y_bearing']);
$con->stroke();
$sur->writeToPng(dirname(__FILE__) . '/text-extents.png');
