/**
* Get the GD applicable fillstyle
*
* @param mixed $fillStyle The fillstyle to return, false if the one
* explicitly set
* @return mixed A GD compatible fillstyle
* @access private
*/
function _getFillStyle($fillStyle = false, $x0 = 0, $y0 = 0, $x1 = 0, $y1 = 0)
{
if ($this->_tileImage != null) {
ImageDestroy($this->_tileImage);
$this->_tileImage = null;
}
if ($fillStyle == 'transparent') {
return false;
} elseif ($fillStyle === false) {
if (is_resource($this->_fillStyle)) {
$x = min($x0, $x1);
$y = min($y0, $y1);
$w = abs($x1 - $x0) + 1;
$h = abs($y1 - $y0) + 1;
if ($this->_gd2) {
$this->_tileImage = ImageCreateTrueColor($this->getWidth(), $this->getHeight());
ImageCopyResampled($this->_tileImage, $this->_fillStyle, $x, $y, 0, 0, $w, $h, ImageSX($this->_fillStyle), ImageSY($this->_fillStyle));
} else {
$this->_tileImage = ImageCreate($this->getWidth(), $this->getHeight());
ImageCopyResized($this->_tileImage, $this->_fillStyle, $x, $y, 0, 0, $w, $h, ImageSX($this->_fillStyle), ImageSY($this->_fillStyle));
}
ImageSetTile($this->_canvas, $this->_tileImage);
return IMG_COLOR_TILED;
} elseif (is_array($this->_fillStyle) && isset($this->_fillStyle['direction'])) {
$width = abs($x1 - $x0) + 1;
$height = abs($y1 - $y0) + 1;
switch ($this->_fillStyle['direction']) {
case 'horizontal':
$count = $width;
break;
case 'vertical':
$count = $height;
break;
case 'horizontal_mirror':
$count = $width / 2;
break;
case 'vertical_mirror':
$count = $height / 2;
break;
case 'diagonal_tl_br':
case 'diagonal_bl_tr':
$count = sqrt($width * $width + $height * $height);
break;
case 'radial':
$count = max($width, $height, sqrt($width * $width + $height * $height)) + 1;
break;
}
$count = round($count);
if ($this->_gd2) {
$this->_tileImage = ImageCreateTrueColor($this->getWidth(), $this->getHeight());
} else {
$this->_tileImage = ImageCreate($this->getWidth(), $this->getHeight());
}
$startColor = Image_Canvas_Color::color2RGB($this->_fillStyle['direction'] == 'radial' ? $this->_fillStyle['end'] : $this->_fillStyle['start']);
$endColor = Image_Canvas_Color::color2RGB($this->_fillStyle['direction'] == 'radial' ? $this->_fillStyle['start'] : $this->_fillStyle['end']);
$redIncrement = ($endColor[0] - $startColor[0]) / $count;
$greenIncrement = ($endColor[1] - $startColor[1]) / $count;
$blueIncrement = ($endColor[2] - $startColor[2]) / $count;
$color = false;
for ($i = 0; $i < $count; $i++) {
unset($color);
if ($i == 0) {
$color = $startColor;
unset($color[3]);
} else {
$color[0] = round($redIncrement * $i + $redIncrement + $startColor[0]);
$color[1] = round($greenIncrement * $i + $greenIncrement + $startColor[1]);
$color[2] = round($blueIncrement * $i + $blueIncrement + $startColor[2]);
}
$color = Image_Canvas_Color::allocateColor($this->_tileImage, $color);
switch ($this->_fillStyle['direction']) {
case 'horizontal':
ImageLine($this->_tileImage, $x0 + $i, $y0, $x0 + $i, $y1, $color);
break;
case 'vertical':
ImageLine($this->_tileImage, $x0, $y1 - $i, $x1, $y1 - $i, $color);
break;
case 'horizontal_mirror':
if ($x0 + $i <= $x1 - $i) {
ImageLine($this->_tileImage, $x0 + $i, $y0, $x0 + $i, $y1, $color);
ImageLine($this->_tileImage, $x1 - $i, $y0, $x1 - $i, $y1, $color);
}
break;
case 'vertical_mirror':
if ($y0 + $i <= $y1 - $i) {
ImageLine($this->_tileImage, $x0, $y0 + $i, $x1, $y0 + $i, $color);
ImageLine($this->_tileImage, $x0, $y1 - $i, $x1, $y1 - $i, $color);
}
break;
case 'diagonal_tl_br':
if ($i > $width && $i > $height) {
$polygon = array($x1, $y0 + $i - $width - 1, $x1, $y1, $x0 + $i - $height - 1, $y1);
} elseif ($i > $width) {
$polygon = array($x0, $y0 + $i, $x0, $y1, $x1, $y1, $x1, $y0 + $i - $width - 1);
} elseif ($i > $height) {
$polygon = array($x0 + $i - $height - 1, $y1, $x1, $y1, $x1, $y0, $x0 + $i, $y0);
} else {
$polygon = array($x0, $y0 + $i, $x0, $y1, $x1, $y1, $x1, $y0, $x0 + $i, $y0);
}
ImageFilledPolygon($this->_tileImage, $polygon, count($polygon) / 2, $color);
break;
case 'diagonal_bl_tr':
if ($i > $width && $i > $height) {
$polygon = array($x1, $y1 - $i + $width - 1, $x1, $y0, $x0 + $i - $height - 1, $y0);
} elseif ($i > $width) {
$polygon = array($x0, $y1 - $i, $x0, $y0, $x1, $y0, $x1, $y1 - $i + $width - 1);
} elseif ($i > $height) {
$polygon = array($x0 + $i - $height - 1, $y0, $x1, $y0, $x1, $y1, $x0 + $i, $y1);
} else {
$polygon = array($x0, $y1 - $i, $x0, $y0, $x1, $y0, $x1, $y1, $x0 + $i, $y1);
}
ImageFilledPolygon($this->_tileImage, $polygon, count($polygon) / 2, $color);
break;
case 'radial':
if ($this->_gd2 && $i < $count) {
ImageFilledEllipse($this->_tileImage, $x0 + $width / 2, $y0 + $height / 2, $count - $i, $count - $i, $color);
}
break;
}
}
ImageSetTile($this->_canvas, $this->_tileImage);
return IMG_COLOR_TILED;
} else {
return $this->_color($this->_fillStyle);
}
} else {
return $this->_color($fillStyle);
}
}
/**
* Get the color index for the RGB color
*
* @param int $color The color
* @return int The GD image index of the color
* @access private
*/
function _color($color = false)
{
if ($color === false || $color === 'opague' || $color === 'transparent') {
return false;
} else {
$color = Image_Canvas_Color::color2RGB($color);
$color[0] = $color[0] / 255;
$color[1] = $color[1] / 255;
$color[2] = $color[2] / 255;
return $color;
}
}
/**
* Internal method to correctly set the colors.
*
* @param mixed $col1 color 1
* @param mixed $col2 color 2
*
* @return void
* @access private
*/
function _setColors($col1, $col2)
{
$this->color1 = Image_Canvas_Color::color2RGB($col1);
$this->color2 = Image_Canvas_Color::color2RGB($col2);
}
/**
* Get the opacity for the RGB color
*
* @param int $color The color
* @return int A SVG compatible opacity value
* @access private
*/
function _opacity($color = false)
{
if ($color === false) {
return false;
} else {
$color = Image_Canvas_Color::color2RGB($color);
if ($color[3] != 255) {
return sprintf('%0.1f', $color[3] / 255);
} else {
return false;
}
}
}
/**
* Get the color index for the RGB color
*
* @param int $color The color
* @return int The GD image index of the color
* @access private
*/
function _color($color = false)
{
if ($color === false) {
return false;
} else {
$color = Image_Canvas_Color::color2RGB($color);
$color[0] = $color[0] / 255;
$color[1] = $color[1] / 255;
$color[2] = $color[2] / 255;
return $color;
}
}
