/** * Get SVG style definition * * Returns a string with SVG style definitions created from color, * fillstatus and line thickness. * * @param ezcGraphColor $color Color * @param mixed $filled Filled * @param float $thickness Line thickness. * @return string Formatstring */ protected function getStyle(ezcGraphColor $color, $filled = true, $thickness = 1.0) { switch (true) { case $color instanceof ezcGraphLinearGradient: $pattern = new CairoLinearGradient($color->startPoint->x, $color->startPoint->y, $color->endPoint->x, $color->endPoint->y); $pattern->addColorStopRgba(0, $color->startColor->red / 255, $color->startColor->green / 255, $color->startColor->blue / 255, 1 - $color->startColor->alpha / 255); $pattern->addColorStopRgba(1, $color->endColor->red / 255, $color->endColor->green / 255, $color->endColor->blue / 255, 1 - $color->endColor->alpha / 255); $this->context->setSource($pattern); $this->context->fill(); break; case $color instanceof ezcGraphRadialGradient: $pattern = new CairoRadialGradient(0, 0, 0, 0, 0, 1); $pattern->addColorStopRgba(0, $color->startColor->red / 255, $color->startColor->green / 255, $color->startColor->blue / 255, 1 - $color->startColor->alpha / 255); $pattern->addColorStopRgba(1, $color->endColor->red / 255, $color->endColor->green / 255, $color->endColor->blue / 255, 1 - $color->endColor->alpha / 255); // Scale pattern, and move it to the correct position $matrix = CairoMatrix::multiply($move = CairoMatrix::initTranslate(-$color->center->x, -$color->center->y), $scale = CairoMatrix::initScale(1 / $color->width, 1 / $color->height)); $pattern->setMatrix($matrix); $this->context->setSource($pattern); $this->context->fill(); break; default: $this->context->setSourceRgba($color->red / 255, $color->green / 255, $color->blue / 255, 1 - $color->alpha / 255); break; } // Set line width $this->context->setLineWidth($thickness); // Set requested fill state for context if ($filled) { $this->context->fillPreserve(); } }
<?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");