PHP CairoContext::setSourceRgb示例

示例#1

文件： ps-surface-source.php 项目： jamesan/cairo

function draw_pattern($surface_size)
{
    global $s;
    $con = new CairoContext($s);
    $con->setSourceRgb(1, 1, 1);
    $con->rectangle(0, 0, $surface_size / 2, $surface_size / 2);
    $con->fill();
    $con->setSourceRgb(1, 0, 0);
    $con->rectangle($surface_size / 2, 0, $surface_size / 2, $surface_size / 2);
    $con->fill();
    $con->setSourceRgb(0, 1, 0);
    $con->rectangle(0, $surface_size / 2, $surface_size / 2, $surface_size / 2);
    $con->fill();
    $con->setSourceRgb(0, 0, 1);
    $con->rectangle($surface_size / 2, $surface_size / 2, $surface_size / 2, $surface_size / 2);
    $con->fill();
    //	$s->writeToPng(dirname(__FILE__)  . "temp1.png");
}

示例#2

文件： operator-clear.php 项目： jamesan/cairo

function draw_mask($x, $y)
{
    global $con, $width, $height, $sur;
    $wi = floor(0.9 * $width);
    $he = floor(0.9 * $height);
    $x += 0.05 * $width;
    $y += 0.05 * $height;
    //$s = new CairoImageSurface(FORMATARGB32, 1, 1);
    $s = $sur->createSimilar(CairoContent::ALPHA, $wi, $he);
    $con2 = new CairoContext($s);
    $con2->setSourceRgb(1, 1, 1);
    /* white */
    $con2->arc(0.5 * $wi, 0.5 * $he, 0.45 * $he, 0, 2 * M_PI);
    $con2->fill();
    $con->maskSurface($s, $x, $y);
}

示例#3

文件： miter-precision.php 项目： jamesan/cairo

<?php

$sur = new CairoImageSurface(CairoFormat::ARGB32, 120, 100);
$con = new CairoContext($sur);
$con->setSourceRgb(1, 1, 1);
$con->paint();
$con->setSourceRgb(0, 0, 0);
$con->setMiterLimit(100000);
for ($xscale = 1; $xscale <= 1000; $xscale += 999) {
    for ($yscale = 1; $yscale <= 1000; $yscale += 999) {
        //$max_scale = ($xscale > $yscale) ? $xscale : $yscale;
        $max_scale = max($xscale, $yscale);
        $con->save();
        if ($xscale > 1) {
            $con->translate(50, 0);
        }
        if ($yscale > 1) {
            $con->translate(0, 50);
        }
        $con->scale($xscale, $yscale);
        $con->setLineWidth(10.0 / $max_scale);
        $con->moveTo(10.0 / $xscale, 10.0 / $yscale);
        $con->lineTo(40.0 / $xscale, 10.0 / $yscale);
        $con->lineTo(10.0 / $xscale, 30.0 / $yscale);
        $con->stroke();
        $con->restore();
    }
}
$sur->writeToPng(dirname(__FILE__) . "/miter-precision-php.png");

示例#4

文件： fill-missed-stop.php 项目： jamesan/cairo

<?php

$sur = new CairoImageSurface(CairoFormat::ARGB32, 53, 53);
$con = new CairoContext($sur);
$con->setSourceRgb(1, 0, 0);
$con->translate(1, 1);
$con->moveTo(0, 0);
$con->lineTo(25, 50);
$con->lineTo(25, 0);
$con->lineTo(50, 25);
$con->lineTo(0, 25);
$con->closePath();
$con->fill();
$sur->writeToPng(dirname(__FILE__) . "/fill-missed-stop-php.png");
?>

示例#5

文件： filter-bilinear-extents.php 项目： jamesan/cairo

<?php

$sur = new CairoImageSurface(CairoFormat::ARGB32, 36, 36);
$con = new CairoContext($sur);
$s = new CairoImageSurface(CairoFormat::ARGB32, 2, 2);
$con2 = new CairoContext($s);
$con2->setSourceRgb(1, 0, 0);
$con2->paint();
$con2->setSourceRgb(0, 0, 1);
$con2->rectangle(0, 1, 1, 1);
$con2->rectangle(1, 0, 1, 1);
$con2->fill();
$con->setSourceRgb(0, 0, 0);
$con->paint();
$con->save();
$con->translate(3, 3);
$con->scale(10, 10);
$con->translate(0.5, 0.5);
$con->setSourceSurface($s, 0, 0);
$con->paint();
$con->restore();
$sur->writeToPng(dirname(__FILE__) . "/filter-bilinear-extents-php.png");
?>

示例#6

文件： meta-surface-pattern.php 项目： jamesan/cairo

$con = new CairoContext($sur);
//$s = new CairoImageSurface(FORMATARGB32, $width, $height);
$con->translate($pad, $pad);
$pat_surface = $sur->createSimilar(CairoContent::COLOR_ALPHA, $patwidth, $patheight);
$cr2 = new CairoContext($pat_surface);
$cr2->setSourceRgba(1, 0, 1, 0.5);
$cr2->rectangle($patwidth / 6.0, $patheight / 6.0, $patwidth / 4.0, $patheight / 4.0);
$cr2->fill();
$cr2->setSourceRgba(0, 1, 1, 0.5);
$cr2->rectangle($patwidth / 2.0, $patheight / 2.0, $patwidth / 4.0, $patheight / 4.0);
$cr2->fill();
$cr2->setLineWidth(1);
$cr2->moveTo($patwidth / 6.0, 0);
$cr2->lineTo(0, 0);
$cr2->lineTo(0, $patheight / 6.0);
$cr2->setSourceRgb(1, 0, 0);
$cr2->stroke();
$cr2->moveTo($patwidth / 6.0, $patheight);
$cr2->lineTo(0, $patheight);
$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);

示例#7

文件： device-offset-positive.php 项目： jamesan/cairo

<?php

$size = 10;
$pad = 2;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $size, $size);
$con = new CairoContext($sur);
$con->setSourceRgb(0, 0, 1);
$con->rectangle($pad, $pad, $size - 2 * $pad, $size - 2 * $pad);
$con->fill();
$s = $con->getGroupTarget();
$c = $s->getContent();
$s1 = $s->createSimilar($c, $size / 2, $size / 2);
$c = new CairoContext($s1);
$c->setSourceRgb(1, 0, 0);
$c->rectangle($pad, $pad, $size - 2 * $pad, $size - 2 * $pad);
$c->fill();
$s1->setDeviceOffset($size / 2, $size / 2);
$con->setSourceSurface($s1, $size / 2, $size / 2);
$con->paint();
$sur->writeToPng(dirname(__FILE__) . "/device-offset-positive-php.png");

示例#8

文件： show-text-current-point.php 项目： jamesan/cairo

<?php

$sur = new CairoImageSurface(CairoFormat::ARGB32, 300, 16);
$con = new CairoContext($sur);
$con->save();
$con->setSourceRgb(1.0, 1.0, 1.0);
/* white */
$con->paint();
$con->restore();
$con->selectFontFace('Bitstream Vera Sans', CairoFontSlant::NORMAL, CairoFontWeight::NORMAL);
$con->setFontSize(12);
$con->setSourceRgb(0, 0, 0);
/* black */
$con->moveTo(0, 12);
$con->showText('Hello from the ');
$con->showText('show-text-current-point-php');
$con->showText(' test.');
$sur->writeToPng(dirname(__FILE__) . '/show-text-current-point.png');

示例#9

文件： close-path.php 项目： jamesan/cairo

<?php

$sur = new CairoImageSurface(CairoFormat::ARGB32, 32, 16);
$con = new CairoContext($sur);
$con->save();
$con->setSourceRgb(1, 1, 1);
$con->paint();
$con->restore();
$con->arc(8, 8, 4, 0, M_PI);
$con->closePath();
$con->arc(8, 8, 4, M_PI, 2 * M_PI);
$con->fill();
$con->translate(16, 0);
$con->moveTo(8, 4);
$con->arcNegative(8, 8, 4, 3 * M_PI / 2, M_PI / 2);
$con->closePath();
$con->curveTo(12, 4, 12, 12, 8, 12);
$path = $con->copyPathFlat();
$con->newPath();
$con->appendPath($path);
$con->fill();
$sur->writeToPng(dirname(__FILE__) . "/close-path-php.png");
?>

示例#10

文件： clip-nesting.php 项目： jamesan/cairo

<?php

$size = 100;
$border = 10;
$linewidth = 20;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $size, $size);
$con = new CairoContext($sur);
$s = $con->getGroupTarget();
$c = new CairoContext($s);
$c->moveTo($border, $border);
$c->lineTo($border + $linewidth, $border);
$c->lineTo($size - $border, $size - $border);
$c->lineTo($size - $border - $linewidth, $size - $border);
$c->clip();
$c->setSourceRgb(0, 0, 1);
$c->paint();
$c->setSourceRgb(1, 1, 1);
$c->rectangle($size / 2 - $linewidth / 2, $border, $linewidth, $size - 2 * $border);
$c->fill();
$c2 = new CairoContext($sur);
$c2->setSourceRgb(1, 1, 1);
$c2->rectangle($size - $border - $linewidth, $border, $linewidth, $size - 2 * $border);
$c2->fill();
$con->setSourceRgb(1, 1, 1);
$con->rectangle($border, $border, $linewidth, $size - 2 * $border);
$con->fill();
$sur->writeToPng(dirname(__FILE__) . "/clip-nesting-php.png");

示例#11

文件： leaky-dashed-rectangle.php 项目： jamesan/cairo

<?php

$width = 60;
$height = 60;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $width, $height);
$con = new CairoContext($sur);
$dash = array(4.0, 2.0);
$con->setSourceRgb(1, 1, 1);
$con->paint();
$con->setSourceRgb(0.0, 0.0, 0);
$con->translate(0.5, 0.5);
$con->setLineWidth(1);
/* This is vital to reproduce the bug. */
/* First check simple rectangles */
$con->setSourceRgb(0.0, 0.0, 0);
$con->rectangle(-$width / 4, -$height / 4, $width, $height);
$con->stroke();
$con->rectangle($width + $width / 4, -$height / 4, -$width, $height);
$con->stroke();
$con->rectangle(-$width / 4, $height + $height / 4, $width, -$height);
$con->stroke();
$con->rectangle($width + $width / 4, $height + $height / 4, -$width, -$height);
$con->stroke();
$con->setDash($dash, 0);
/* And now dashed. */
$con->setSourceRgb(1.0, 0.0, 0);
$con->rectangle(-$width / 4, -$height / 4, $width, $height);
$con->stroke();
$con->setSourceRgb(0.0, 1.0, 0);
$con->rectangle($width + $width / 4, -$height / 4, -$width, $height);
$con->stroke();

示例#12

文件： linear-gradient-reflect.php 项目： jamesan/cairo

<?php

$width = 50;
$height = 50;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $width, $height);
$con = new CairoContext($sur);
$con->setSourceRgb(0.5, 0.5, 0.5);
$con->paint();
$con->save();
$pattern = new CairoLinearGradient(0, 0, 10.0, 0);
$pattern->addColorStopRgb(0.0, 0.0, 0.0, 1.0);
$pattern->addColorStopRgb(1.0, 1.0, 0.0, 0.0);
$pattern->setExtend(CairoExtend::REFLECT);
$con->setSource($pattern);
$con->rectangle(0.0, 0.0, $width, $height);
$con->fill();
$con->restore();
$sur->writeToPng(dirname(__FILE__) . "/linear-gradient-reflect-php.png");
?>

示例#13

文件： long-lines.php 项目： jamesan/cairo

<?php

$width = 10;
$height = 8;
$sur = new CairoImageSurface(CairoFormat::ARGB32, 70, 70);
$con = new CairoContext($sur);
$line[0] = array('len' => 100.0, 'r' => 1, 'g' => 0, 'b' => 0);
$line[1] = array('len' => 10000.0, 'r' => 0, 'g' => 1, 'b' => 0);
$line[2] = array('len' => 10000.0, 'r' => 0, 'g' => 0, 'b' => 1);
$line[3] = array('len' => 10000.0, 'r' => 1, 'g' => 1, 'b' => 0);
$line[4] = array('len' => 10000.0, 'r' => 0, 'g' => 1, 'b' => 1);
$line[5] = array('len' => 10000.0, 'r' => 1, 'g' => 0, 'b' => 1);
$con->save();
$con->setSourceRgb(1, 1, 1);
$con->paint();
$con->restore();
$con->save();
$con->setLineWidth(1);
$pos = 10.5;
for ($i = 0; $i < 6; $i++) {
    $con->moveTo($pos, -$line[$i]['len']);
    $con->lineTo($pos, $line[$i]['len']);
    $con->setSourceRgb($line[$i]['r'], $line[$i]['g'], $line[$i]['b']);
    $con->stroke();
    $pos += 10;
}
$con->restore();
$con->moveTo(35, -10000);
$con->lineTo(35, 10000);
$con->setLineWidth(1);
$con->stroke();

示例#14

文件： set-source.php 项目： jamesan/cairo

$sur = new CairoImageSurface(CairoFormat::ARGB32, 5, 5);
$con = new CairoContext($sur);
$color = '';
$color .= chr(0x4c);
$color .= chr(0x33);
$color .= chr(0x19);
$color .= chr(0x80);
$s = new CairoImageSurface(CairoFormat::ARGB32, 1, 1);
$s->createForData($color, CairoFormat::ARGB32, 1, 1, 4);
$pat = new CairoSurfacePattern($s);
$pat->setExtend(CairoExtend::REPEAT);
for ($i = 0; $i < 5; $i++) {
    switch ($i) {
        case 0:
            $con->setSourceRgb(0.6, 0.7, 0.8);
            break;
        case 1:
            $con->setSourceRgba(0.2, 0.4, 0.6, 0.5);
            break;
        case 2:
            $con->setSourceRgba(0.2, 0.4, 0.6, 0.5);
            break;
        case 3:
        default:
            $con->setSource($pat);
    }
    $con->rectangle($i, 0, 1, 5);
    $con->fill();
}
$sur->writeToPng(dirname(__FILE__) . '/set-source.png');

示例#15

文件： a1-image-sample.php 项目： jamesan/cairo

<?php

$points = 10;
$step = 1.0 / $points;
$pad = 1;
$width = $pad + $points * 2 + $pad;
$height = $width;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $width, $height);
$s = new CairoImageSurface(CairoFormat::ARGB32, 1, 1);
$con = new CairoContext($sur);
$c = new CairoContext($s);
$c->setSourceRgb(0, 0, 0);
$c->paint();
$con->setSourceRgb(1, 1, 1);
$con->paint();
$con->setSourceRgb(0, 0, 0);
$con->translate($pad, $pad);
$con->setAntialias(CairoAntialias::MODE_NONE);
for ($i = 0; $i < $points; $i++) {
    for ($j = 0; $j < $points; $j++) {
        $t1 = 2 * $i + ($i + 1) * $step;
        $t2 = 2 * $j + ($j + 1) * $step;
        $con->setSourceSurface($s, $t1, $t2);
        $pat = $con->getSource();
        $pat->setFilter(CairoFilter::NEAREST);
        $con->paint();
    }
}
$sur->writeToPng(dirname(__FILE__) . '/a1-image-sample-php.png');
?>

示例#16

文件： group-paint.php 项目： jamesan/cairo

<?php

$sur = new CairoImageSurface(CairoFormat::ARGB32, 10, 10);
$con = new CairoContext($sur);
$con->pushGroup();
$con->setSourceRgb(0, 0, 1);
$con->paint();
$con->popGroupToSource();
$con->setOperator(CairoOperator::SOURCE);
$con->paint();
$sur->writeToPng(dirname(__FILE__) . "/group-paint-php.png");
?>