PHP CairoContext::setDash示例

示例#1

文件： dashes.php 项目： jamesan/cairo

<?php

$dashes = array(50.0, 10.0, 10.0, 10.0);
$ndash = count($dashes);
$offset = -50.0;
$sur = new CairoImageSurface(0, 500, 500);
$con = new CairoContext($sur);
$con->setDash($dashes, $offset);
$con->setLineWidth(10.0);
$con->moveTo(128.0, 25.6);
$con->lineTo(230.4, 230.4);
$con->relLineTo(-102.4, 0.0);
$con->curveTo(51.2, 230.4, 51.2, 128.0, 128.0, 128.0);
$con->stroke();
$sur->writeToPng(dirname(__FILE__) . "/image_dash.png");

示例#2

文件： dash-curve.php 项目： jamesan/cairo

<?php

$sur = new CairoImageSurface(CairoFormat::ARGB32, 25 * 60, 4 * 60);
$con = new CairoContext($sur);
$dash = array(20.0, 20.0);
$con->setSourceRgb(0, 0, 0);
$con->paint();
for ($a = 0; $a < 4; $a++) {
    for ($b = 0; $b < 5; $b++) {
        for ($c = 0; $c < 5; $c++) {
            $con->moveTo(($b * 5 + $c) * 60 + 10, $a * 60 + 10);
            $con->relCurveTo(0, $b * 10, 0, $b * 10, $c * 10, $b * 10);
            $con->setSourceRgb(1, 1, 1);
            $con->setLineWidth(8);
            $con->setLineCap(CairoLineCap::ROUND);
            $con->setDash($dash, $a * 10);
            $con->strokePreserve();
            $con->setSourceRgb(0, 0.5, 1);
            $con->setLineWidth(2);
            $con->setLineCap(2);
            $ar = array(8.0, 8.0);
            $con->setDash($ar, 0);
            $con->stroke();
        }
    }
}
$sur->writeToPng(dirname(__FILE__) . '/dash-curve-php.png');

示例#3

文件： leaky-dash.php 项目： jamesan/cairo

<?php

$width = 71;
$height = 28;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $width, $height);
$con = new CairoContext($sur);
$dash = array(8.0, 2.0);
$con->setSourceRgb(1, 1, 1);
$con->paint();
$con->setSourceRgb(0.0, 0.0, 0);
$con->setLineWidth(2);
/* This is vital to reproduce the bug. */
/* First check simple rectangles */
$con->rectangle(2, 2, 67, 24);
$con->setDash($dash, 9.0);
$con->stroke();
$sur->writeToPng(dirname(__FILE__) . '/leaky-dash.png');

示例#4

文件： degenerate-path.php 项目： jamesan/cairo

$dash_long = array(6.0, 6.0);
$con->setSourceRgb(1, 0, 0);
for ($i = 0; $i < 3; $i++) {
    $con->save();
    $con->setLineCap($cap[$i]);
    /* simple degenerate paths */
    $con->setLineWidth(6);
    $con->moveTo(6, 6);
    $con->lineTo(6, 6);
    $con->stroke();
    $con->translate(0, 3 * 3);
    $con->moveTo(6, 6);
    $con->closePath();
    $con->stroke();
    /* degenerate paths starting with dash on */
    $con->setDash($dash, 0.0);
    $con->translate(0, 3 * 3);
    $con->moveTo(6, 6);
    $con->lineTo(6, 6);
    $con->stroke();
    $con->translate(0, 3 * 3);
    $con->moveTo(6, 6);
    $con->closePath();
    $con->stroke();
    /* degenerate paths starting with dash off */
    /* these should not draw anything */
    $con->setDash($dash, 2.0);
    $con->translate(0, 3 * 3);
    $con->moveTo(6, 6);
    $con->lineTo(6, 6);
    $con->stroke();

示例#5

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

$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();
$con->setSourceRgb(0.0, 0.0, 1);
$con->rectangle(-$width / 4, $height + $height / 4, $width, -$height);
$con->stroke();
$con->setSourceRgb(1.0, 1.0, 0);
$con->rectangle($width + $width / 4, $height + $height / 4, -$width, -$height);
$con->stroke();
$sur->writeToPng(dirname(__FILE__) . "/leaky-dashed-rectangle-php.png");

示例#6

文件： dash-caps-joins.php 项目： jamesan/cairo

$linewidth = 10.0;
$size = 5 * $linewidth;
$pad = 2 * $linewidth;
$sur = new CairoImageSurface(CairoFormat::ARGB32, 3 * ($pad + $size) + $pad, 3 * $pad + 2 * $size);
$con = new CairoContext($sur);
$dash = array($linewidth, 1.5 * $linewidth);
$dashoff = -2 * $linewidth;
$con->save();
$con->setSourceRgb(1, 1, 1);
$con->paint();
$con->restore();
for ($i = 0; $i < 2; $i++) {
    $con->save();
    $con->setLineWidth($linewidth);
    $con->setDash($dash, $dashoff);
    $con->translate($pad, $pad);
    $con->moveTo(0, 0);
    $con->relLineTo(0, $size);
    $con->relLineTo($size, 0);
    $con->closePath();
    $con->moveTo(2 * $linewidth, 0);
    $con->relLineTo(3 * $linewidth, 0);
    $con->relLineTo(0, 3 * $linewidth);
    $con->setLineCap(CairoLineCap::BUTT);
    $con->setLineJoin(CairoLineJoin::BEVEL);
    $con->stroke();
    $con->translate($size + $pad, 0);
    $con->moveTo(0, 0);
    $con->relLineTo(0, $size);
    $con->relLineTo($size, 0);

示例#7

文件： dash-scale.php 项目： jamesan/cairo

<?php

$linewidth = 8.0;
$size = 5 * $linewidth;
$pad = 2 * $linewidth;
$imwidth = 3 * ($pad + $size) + $pad;
$imheight = $size * 5 + 6 * $pad;
$sur = new CairoImageSurface(CairoFormat::ARGB32, $imwidth, $imheight);
$con = new CairoContext($sur);
$dash = array(1.5 * $linewidth);
$con->save();
$con->setSourceRgb(1, 1, 1);
$con->paint();
$con->restore();
$con->translate($pad, $pad);
$con->setDash($dash, -2 * $linewidth);
$con->setLineWidth($linewidth);
$con->save();
$con->moveTo(0, 0);
$con->relLineTo(0, $size);
$con->relLineTo($size, 0);
$con->closePath();
$con->moveTo(2 * $linewidth, 0);
$con->relLineTo(3 * $linewidth, 0);
$con->relLineTo(0, 3 * $linewidth);
$con->setLineCap(CairoLineCap::BUTT);
$con->setLineJoin(CairoLineJoin::BEVEL);
$con->stroke();
$con->translate($size + $pad, 0);
$con->moveTo(0, 0);
$con->relLineTo(0, $size);