public function transform(CGImageBase $src) { $width = $src['width']; $height = $src['height']; $radius = $this->_radius; $type = $src['type']; $color = null; $r = $g = $b = 255; if ($src->supports_transparency() && !$this->_color) { $this->_color = 'transparent'; } if ($this->_color == 'transparent') { $type = 'image/png'; } $_dest = new CGImageBase(array($type, $width, $height)); imagecopy($_dest['rsrc'], $src['rsrc'], 0, 0, 0, 0, $width, $height); if ($this->_color) { if ($this->_color == 'transparent') { // get the dest imagages transparent color. $color = $_dest['transparent']; if (!$color) { list($r, $g, $b) = cgsi_utils::find_unused_color($_dest); } } else { // use the specified rgb. list($r, $g, $b) = cgsi_utils::color_to_rgb($this->_color); } } if (!$color) { if ($this->_color == 'transparent') { $color = imagecolorallocatealpha($_dest['rsrc'], $r, $g, $b, 127); } else { $color = imagecolorallocate($_dest['rsrc'], $r, $g, $b); } } if ($this->_color == 'transparent') { $_dest['transparent'] = $color; imagecolortransparent($_dest['rsrc'], $color); imagealphablending($_dest['rsrc'], FALSE); } // round the corners. imagearc($_dest['rsrc'], $radius - 1, $radius - 1, $radius * 2, $radius * 2, 180, 270, $color); imagefilltoborder($_dest['rsrc'], 0, 0, $color, $color); imagearc($_dest['rsrc'], $width - $radius, $radius - 1, $radius * 2, $radius * 2, 270, 0, $color); imagefilltoborder($_dest['rsrc'], $width - 1, 0, $color, $color); imagearc($_dest['rsrc'], $radius - 1, $height - $radius, $radius * 2, $radius * 2, 90, 180, $color); imagefilltoborder($_dest['rsrc'], 0, $height - 1, $color, $color); imagearc($_dest['rsrc'], $width - $radius, $height - $radius, $radius * 2, $radius * 2, 0, 90, $color); imagefilltoborder($_dest['rsrc'], $width - 1, $height - 1, $color, $color); return $_dest; }
public function transform(CGImageBase $src) { // quick optimization (nothing to do) //if( $this->_dest_w == $src['width'] && $this->_dest_h == $src['height'] ) return $src; $type = $src['type']; if ($this->_alpha == 127) { $this->_color = 'transparent'; } if ($src->supports_transparency() && !$this->_color) { $this->_color = 'transparent'; } if ($this->_color == 'transparent' || $this->_alpha > 0) { $type = 'image/png'; } if ($this->_color == 'transparent') { $this->_alpha = 127; } // create our destination image. $_dest = new CGImageBase(array($type, $this->_dest_w, $this->_dest_h)); // fill our image with a color (or transparent) $color = null; if ($this->_color) { if ($this->_color == 'transparent') { // need to get a transparent color from someplace $color = $_dest['transparent']; } else { $_r = $_g = $_b = 255; list($_r, $_g, $_b) = cgsi_utils::color_to_rgb($this->_color); $color = imagecolorallocatealpha($_dest['rsrc'], $_r, $_g, $_b, $this->_alpha); } } if ($this->_alpha > 0 && $this->_alpha < 127) { $_dest['savealpha'] = TRUE; imagealphablending($_dest['rsrc'], TRUE); imagesavealpha($_dest['rsrc'], TRUE); } if ($this->_color == 'transparent') { imagecolortransparent($_dest['rsrc'], $color); imagealphablending($_dest['rsrc'], FALSE); } imagefill($_dest['rsrc'], 0, 0, $color); if ($this->_dest_w / $this->_dest_h > $src['width'] / $src['height']) { // height is greater... $new_h = $this->_dest_h; $new_w = round($new_h / $src['height'] * $src['width'], 0); } else { // width is greater. $new_w = $this->_dest_w; $new_h = round($new_w / $src['width'] * $src['height'], 0); } $x0 = (int) (($this->_dest_w - $new_w) / 2); $y0 = (int) (($this->_dest_h - $new_h) / 2); // resize the big image into the temporary transparent image $res = imagecopyresampled($_dest['rsrc'], $src['rsrc'], $x0, $y0, 0, 0, $new_w, $new_h, $src['width'], $src['height']); if ($res === FALSE) { throw new Exception('Resizetofit - stage 1 - failed'); } return $_dest; }