Phpthumb.filters.php:
<?php
//////////////////////////////////////////////////////////////
/// phpThumb() by James Heinrich <info <at> silisoftware <dot> com> //
// available at http://phpthumb.sourceforge.net ///
//////////////////////////////////////////////////////////////
/// //
// phpthumb.filters.php - image processing filter functions //
// ///
//////////////////////////////////////////////////////////////
class phpthumb_filters {
function ApplyMask(&$gdimg_mask, &$gdimg_image) {
if (phpthumb_functions::gd_version() < 2) {
//$this->DebugMessage('Skipping ApplyMask() because gd_version is "'.phpthumb_functions::gd_version().'"', __FILE__, __LINE__);
return false;
}
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=')) {
//$this->DebugMessage('Using alpha ApplyMask() technique', __FILE__, __LINE__);
if ($gdimg_mask_resized = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg_image), ImageSY($gdimg_image))) {
ImageCopyResampled($gdimg_mask_resized, $gdimg_mask, 0, 0, 0, 0, ImageSX($gdimg_image), ImageSY($gdimg_image), ImageSX($gdimg_mask), ImageSY($gdimg_mask));
if ($gdimg_mask_blendtemp = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg_image), ImageSY($gdimg_image))) {
$color_background = ImageColorAllocate($gdimg_mask_blendtemp, 0, 0, 0);
ImageFilledRectangle($gdimg_mask_blendtemp, 0, 0, ImageSX($gdimg_mask_blendtemp), ImageSY($gdimg_mask_blendtemp), $color_background);
ImageAlphaBlending($gdimg_mask_blendtemp, false);
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=')) {
ImageSaveAlpha($gdimg_mask_blendtemp, true);
}
for ($x = 0; $x < ImageSX($gdimg_image); $x++) {
for ($y = 0; $y < ImageSY($gdimg_image); $y++) {
//$RealPixel = phpthumb_functions::GetPixelColor($gdimg_mask_blendtemp, $x, $y);
$RealPixel = phpthumb_functions::GetPixelColor($gdimg_image, $x, $y);
$MaskPixel = phpthumb_functions::GrayscalePixel(phpthumb_functions::GetPixelColor($gdimg_mask_resized, $x, $y));
$MaskAlpha = 127 - (floor($MaskPixel['red'] / 2) * (1 - ($RealPixel['alpha'] / 127)));
$newcolor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_mask_blendtemp, $RealPixel['red'], $RealPixel['green'], $RealPixel['blue'], $MaskAlpha);
ImageSetPixel($gdimg_mask_blendtemp, $x, $y, $newcolor);
}
}
ImageAlphaBlending($gdimg_image, false);
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=')) {
ImageSaveAlpha($gdimg_image, true);
}
ImageCopy($gdimg_image, $gdimg_mask_blendtemp, 0, 0, 0, 0, ImageSX($gdimg_mask_blendtemp), ImageSY($gdimg_mask_blendtemp));
ImageDestroy($gdimg_mask_blendtemp);
} else {
//$this->DebugMessage('ImageCreateFunction() failed', __FILE__, __LINE__);
}
ImageDestroy($gdimg_mask_resized);
} else {
//$this->DebugMessage('ImageCreateFunction() failed', __FILE__, __LINE__);
}
} else {
// alpha merging requires PHP v4.3.2+
//$this->DebugMessage('Skipping ApplyMask() technique because PHP is v"'.phpversion().'"', __FILE__, __LINE__);
}
return true;
}
function Bevel(&$gdimg, $width, $hexcolor1, $hexcolor2) {
$width = ($width ? $width : 5);
$hexcolor1 = ($hexcolor1 ? $hexcolor1 : 'FFFFFF');
$hexcolor2 = ($hexcolor2 ? $hexcolor2 : '000000');
ImageAlphaBlending($gdimg, true);
for ($i = 0; $i < $width; $i++) {
$alpha = round(($i / $width) * 127);
$color1[$i] = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor1, false, $alpha);
$color2[$i] = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor2, false, $alpha);
ImageLine($gdimg, $i, $i, $i, ImageSY($gdimg) - $i, $color1[$i]); // left
ImageLine($gdimg, $i, $i, ImageSX($gdimg) - $i, $i, $color1[$i]); // top
ImageLine($gdimg, ImageSX($gdimg) - $i, ImageSY($gdimg) - $i, ImageSX($gdimg) - $i, $i, $color2[$i]); // right
ImageLine($gdimg, ImageSX($gdimg) - $i, ImageSY($gdimg) - $i, $i, ImageSY($gdimg) - $i, $color2[$i]); // bottom
}
return true;
}
function Blur(&$gdimg, $radius) {
// Taken from Torstein Hønsi's phpUnsharpMask (see phpthumb.unsharp.php)
$radius = round(max(0, min($radius, 50)) * 2);
if (!$radius) {
return false;
}
$w = ImageSX($gdimg);
$h = ImageSY($gdimg);
if ($imgBlur = ImageCreateTrueColor($w, $h)) {
// Gaussian blur matrix:
// 1 2 1
// 2 4 2
// 1 2 1
// Move copies of the image around one pixel at the time and merge them with weight
// according to the matrix. The same matrix is simply repeated for higher radii.
for ($i = 0; $i < $radius; $i++) {
ImageCopy ($imgBlur, $gdimg, 0, 0, 1, 1, $w - 1, $h - 1); // up left
ImageCopyMerge($imgBlur, $gdimg, 1, 1, 0, 0, $w, $h, 50.00000); // down right
ImageCopyMerge($imgBlur, $gdimg, 0, 1, 1, 0, $w - 1, $h, 33.33333); // down left
ImageCopyMerge($imgBlur, $gdimg, 1, 0, 0, 1, $w, $h - 1, 25.00000); // up right
ImageCopyMerge($imgBlur, $gdimg, 0, 0, 1, 0, $w - 1, $h, 33.33333); // left
ImageCopyMerge($imgBlur, $gdimg, 1, 0, 0, 0, $w, $h, 25.00000); // right
ImageCopyMerge($imgBlur, $gdimg, 0, 0, 0, 1, $w, $h - 1, 20.00000); // up
ImageCopyMerge($imgBlur, $gdimg, 0, 1, 0, 0, $w, $h, 16.666667); // down
ImageCopyMerge($imgBlur, $gdimg, 0, 0, 0, 0, $w, $h, 50.000000); // center
ImageCopy ($gdimg, $imgBlur, 0, 0, 0, 0, $w, $h);
}
return true;
}
return false;
}
function Colorize(&$gdimg, $amount, $targetColor) {
$amount = (is_numeric($amount) ? $amount : 25);
$targetColor = (phpthumb_functions::IsHexColor($targetColor) ? $targetColor : 'gray');
// overridden below for grayscale
if ($targetColor != 'gray') {
$TargetPixel['red'] = hexdec(substr($targetColor, 0, 2));
$TargetPixel['green'] = hexdec(substr($targetColor, 2, 2));
$TargetPixel['blue'] = hexdec(substr($targetColor, 4, 2));
}
for ($x = 0; $x < ImageSX($gdimg); $x++) {
for ($y = 0; $y < ImageSY($gdimg); $y++) {
$OriginalPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
if ($targetColor == 'gray') {
$TargetPixel = phpthumb_functions::GrayscalePixel($OriginalPixel);
}
foreach ($TargetPixel as $key => $value) {
$NewPixel[$key] = round(max(0, min(255, ($OriginalPixel[$key] * ((100 - $amount) / 100)) + ($TargetPixel[$key] * ($amount / 100)))));
}
//$newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, $NewPixel['red'], $NewPixel['green'], $NewPixel['blue'], $OriginalPixel['alpha']);
$newColor = ImageColorAllocate($gdimg, $NewPixel['red'], $NewPixel['green'], $NewPixel['blue']);
ImageSetPixel($gdimg, $x, $y, $newColor);
}
}
return true;
}
function Desaturate(&$gdimg, $amount, $color='') {
return phpthumb_filters::Colorize($gdimg, $amount, (phpthumb_functions::IsHexColor($color) ? $color : 'gray'));
}
function DropShadow(&$gdimg, $distance, $width, $hexcolor, $angle, $fade) {
if (phpthumb_functions::gd_version() < 2) {
return false;
}
$distance = ($distance ? $distance : 10);
$width = ($width ? $width : 10);
$hexcolor = ($hexcolor ? $hexcolor : '000000');
$angle = ($angle ? $angle : 225);
$fade = ($fade ? $fade : 1);
$width_shadow = cos(deg2rad($angle)) * ($distance + $width);
$height_shadow = sin(deg2rad($angle)) * ($distance + $width);
$scaling = min(ImageSX($gdimg) / (ImageSX($gdimg) + abs($width_shadow)), ImageSY($gdimg) / (ImageSY($gdimg) + abs($height_shadow)));
for ($i = 0; $i < $width; $i++) {
$WidthAlpha[$i] = (abs(($width / 2) - $i) / $width) * $fade;
$Offset['x'] = cos(deg2rad($angle)) * ($distance + $i);
$Offset['y'] = sin(deg2rad($angle)) * ($distance + $i);
}
$tempImageWidth = ImageSX($gdimg) + abs($Offset['x']);
$tempImageHeight = ImageSY($gdimg) + abs($Offset['y']);
if ($gdimg_dropshadow_temp = phpthumb_functions::ImageCreateFunction($tempImageWidth, $tempImageHeight)) {
ImageAlphaBlending($gdimg_dropshadow_temp, false);
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=')) {
ImageSaveAlpha($gdimg_dropshadow_temp, true);
}
$transparent1 = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_dropshadow_temp, 0, 0, 0, 127);
ImageFill($gdimg_dropshadow_temp, 0, 0, $transparent1);
for ($x = 0; $x < ImageSX($gdimg); $x++) {
for ($y = 0; $y < ImageSY($gdimg); $y++) {
$PixelMap[$x][$y] = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
}
}
for ($x = 0; $x < $tempImageWidth; $x++) {
for ($y = 0; $y < $tempImageHeight; $y++) {
//for ($i = 0; $i < $width; $i++) {
for ($i = 0; $i < 1; $i++) {
if (!isset($PixelMap[$x][$y]['alpha']) || ($PixelMap[$x][$y]['alpha'] > 0)) {
if (isset($PixelMap[$x + $Offset['x']][$y + $Offset['y']]['alpha']) && ($PixelMap[$x + $Offset['x']][$y + $Offset['y']]['alpha'] < 127)) {
$thisColor = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor, false, $PixelMap[$x + $Offset['x']][$y + $Offset['y']]['alpha']);
ImageSetPixel($gdimg_dropshadow_temp, $x, $y, $thisColor);
}
}
}
}
}
ImageAlphaBlending($gdimg_dropshadow_temp, true);
for ($x = 0; $x < ImageSX($gdimg); $x++) {
for ($y = 0; $y < ImageSY($gdimg); $y++) {
if ($PixelMap[$x][$y]['alpha'] < 127) {
$thisColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_dropshadow_temp, $PixelMap[$x][$y]['red'], $PixelMap[$x][$y]['green'], $PixelMap[$x][$y]['blue'], $PixelMap[$x][$y]['alpha']);
ImageSetPixel($gdimg_dropshadow_temp, $x, $y, $thisColor);
}
}
}
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=')) {
ImageSaveAlpha($gdimg, true);
}
ImageAlphaBlending($gdimg, false);
//$this->is_alpha = true;
$transparent2 = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, 0, 0, 0, 127);
ImageFilledRectangle($gdimg, 0, 0, ImageSX($gdimg), ImageSY($gdimg), $transparent2);
ImageCopyResampled($gdimg, $gdimg_dropshadow_temp, 0, 0, 0, 0, ImageSX($gdimg), ImageSY($gdimg), ImageSX($gdimg_dropshadow_temp), ImageSY($gdimg_dropshadow_temp));
ImageDestroy($gdimg_dropshadow_temp);
}
return true;
}
function Elipse($gdimg) {
if (phpthumb_functions::gd_version() < 2) {
return false;
}
// generate mask at twice desired resolution and downsample afterwards for easy antialiasing
if ($gdimg_elipsemask_double = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg) * 2, ImageSY($gdimg) * 2)) {
if ($gdimg_elipsemask = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg), ImageSY($gdimg))) {
$color_transparent = ImageColorAllocate($gdimg_elipsemask_double, 255, 255, 255);
ImageFilledEllipse($gdimg_elipsemask_double, ImageSX($gdimg), ImageSY($gdimg), (ImageSX($gdimg) - 1) * 2, (ImageSY($gdimg) - 1) * 2, $color_transparent);
ImageCopyResampled($gdimg_elipsemask, $gdimg_elipsemask_double, 0, 0, 0, 0, ImageSX($gdimg), ImageSY($gdimg), ImageSX($gdimg) * 2, ImageSY($gdimg) * 2);
phpthumb_filters::ApplyMask($gdimg_elipsemask, $gdimg);
ImageDestroy($gdimg_elipsemask);
return true;
} else {
//$this->DebugMessage('$gdimg_elipsemask = phpthumb_functions::ImageCreateFunction() failed', __FILE__, __LINE__);
}
ImageDestroy($gdimg_elipsemask_double);
} else {
//$this->DebugMessage('$gdimg_elipsemask_double = phpthumb_functions::ImageCreateFunction() failed', __FILE__, __LINE__);
}
return false;
}
function Flip(&$gdimg, $x=false, $y=false) {
if (!$x && !$y) {
return false;
}
if ($tempImage = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg), ImageSY($gdimg))) {
if ($x) {
ImageCopy($tempImage, $gdimg, 0, 0, 0, 0, ImageSX($gdimg), ImageSY($gdimg));
for ($x = 0; $x < ImageSX($gdimg); $x++) {
ImageCopy($gdimg, $tempImage, ImageSX($gdimg) - 1 - $x, 0, $x, 0, 1, ImageSY($gdimg));
}
}
if ($y) {
ImageCopy($tempImage, $gdimg, 0, 0, 0, 0, ImageSX($gdimg), ImageSY($gdimg));
for ($y = 0; $y < ImageSY($gdimg); $y++) {
ImageCopy($gdimg, $tempImage, 0, ImageSY($gdimg) - 1 - $y, 0, $y, ImageSX($gdimg), 1);
}
}
ImageDestroy($tempImage);
}
return true;
}
function Frame(&$gdimg, $frame_width, $edge_width, $hexcolor_frame, $hexcolor1, $hexcolor2) {
$frame_width = ($frame_width ? $frame_width : 5);
$edge_width = ($edge_width ? $edge_width : 1);
$hexcolor_frame = ($hexcolor_frame ? $hexcolor_frame : 'CCCCCC');
$hexcolor1 = ($hexcolor1 ? $hexcolor1 : 'FFFFFF');
$hexcolor2 = ($hexcolor2 ? $hexcolor2 : '000000');
$color_frame = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor_frame);
$color1 = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor1);
$color2 = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor2);
for ($i = 0; $i < $edge_width; $i++) {
// outer bevel
ImageLine($gdimg, $i, $i, $i, ImageSY($gdimg) - $i, $color1); // left
ImageLine($gdimg, $i, $i, ImageSX($gdimg) - $i, $i, $color1); // top
ImageLine($gdimg, ImageSX($gdimg) - $i, ImageSY($gdimg) - $i, ImageSX($gdimg) - $i, $i, $color2); // right
ImageLine($gdimg, ImageSX($gdimg) - $i, ImageSY($gdimg) - $i, $i, ImageSY($gdimg) - $i, $color2); // bottom
}
for ($i = 0; $i < $frame_width; $i++) {
// actual frame
ImageRectangle($gdimg, $edge_width + $i, $edge_width + $i, ImageSX($gdimg) - $edge_width - $i, ImageSY($gdimg) - $edge_width - $i, $color_frame);
}
for ($i = 0; $i < $edge_width; $i++) {
// inner bevel
ImageLine($gdimg, $frame_width + $edge_width + $i, $frame_width + $edge_width + $i, $frame_width + $edge_width + $i, ImageSY($gdimg) - $frame_width - $edge_width - $i, $color2); // left
ImageLine($gdimg, $frame_width + $edge_width + $i, $frame_width + $edge_width + $i, ImageSX($gdimg) - $frame_width - $edge_width - $i, $frame_width + $edge_width + $i, $color2); // top
ImageLine($gdimg, ImageSX($gdimg) - $frame_width - $edge_width - $i, ImageSY($gdimg) - $frame_width - $edge_width - $i, ImageSX($gdimg) - $frame_width - $edge_width - $i, $frame_width + $edge_width + $i, $color1); // right
ImageLine($gdimg, ImageSX($gdimg) - $frame_width - $edge_width - $i, ImageSY($gdimg) - $frame_width - $edge_width - $i, $frame_width + $edge_width + $i, ImageSY($gdimg) - $frame_width - $edge_width - $i, $color1); // bottom
}
return true;
}
function Gamma(&$gdimg, $amount) {
ImageGammaCorrect($gdimg, 1.0, $amount);
return true;
}
function HistogramAnalysis(&$gdimg, $calculateGray=false) {
$ImageSX = ImageSX($gdimg);
$ImageSY = ImageSY($gdimg);
for ($x = 0; $x < $ImageSX; $x++) {
for ($y = 0; $y < $ImageSY; $y++) {
$OriginalPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
@$Analysis['red'][$OriginalPixel['red']]++;
@$Analysis['green'][$OriginalPixel['green']]++;
@$Analysis['blue'][$OriginalPixel['blue']]++;
@$Analysis['alpha'][$OriginalPixel['alpha']]++;
if ($calculateGray) {
$GrayPixel = phpthumb_functions::GrayscalePixel($OriginalPixel);
@$Analysis['gray'][$GrayPixel['red']]++;
}
}
}
$keys = array('red', 'green', 'blue', 'alpha');
if ($calculateGray) {
$keys[] = 'gray';
}
foreach ($keys as $key) {
ksort($Analysis[$key]);
}
return $Analysis;
}
function HistogramStretch(&$gdimg, $band='*', $min=-1, $max=-1) {
// equivalent of "Auto Contrast" in Adobe Photoshop
$Analysis = phpthumb_filters::HistogramAnalysis($gdimg, true);
$keys = array('r'=>'red', 'g'=>'green', 'b'=>'blue', 'a'=>'alpha', '*'=>'gray');
if (!isset($keys[$band])) {
return false;
}
$key = $keys[$band];
// If the absolute brightest and darkest pixels are used then one random
// pixel in the image could throw off the whole system. Instead, count up/down
// from the limit and allow 0.1% of brightest/darkest pixels to be clipped to min/max
$clip_threshold = ImageSX($gdimg) * ImageSX($gdimg) * 0.001;
if ($min >= 0) {
$range_min = min($min, 255);
} else {
$countsum = 0;
for ($i = 0; $i <= 255; $i++) {
$countsum += @$Analysis[$key][$i];
if ($countsum >= $clip_threshold) {
$range_min = $i - 1;
break;
}
}
$range_min = max($range_min, 0);
}
if ($max >= 0) {
$range_max = max($max, 255);
} else {
$countsum = 0;
$threshold = ImageSX($gdimg) * ImageSX($gdimg) * 0.001; // 0.1% of brightest and darkest pixels can be clipped
for ($i = 255; $i >= 0; $i--) {
$countsum += @$Analysis[$key][$i];
if ($countsum >= $clip_threshold) {
$range_max = $i + 1;
break;
}
}
$range_max = min($range_max, 255);
}
$range_scale = (($range_max == $range_min) ? 1 : (255 / ($range_max - $range_min)));
if (($range_min == 0) && ($range_max == 255)) {
// no adjustment neccesary - don't waste CPU time!
return true;
}
$ImageSX = ImageSX($gdimg);
$ImageSY = ImageSY($gdimg);
for ($x = 0; $x < $ImageSX; $x++) {
for ($y = 0; $y < $ImageSY; $y++) {
$OriginalPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
if ($band == '*') {
$new['red'] = min(255, max(0, ($OriginalPixel['red'] - $range_min) * $range_scale));
$new['green'] = min(255, max(0, ($OriginalPixel['green'] - $range_min) * $range_scale));
$new['blue'] = min(255, max(0, ($OriginalPixel['blue'] - $range_min) * $range_scale));
$new['alpha'] = min(255, max(0, ($OriginalPixel['alpha'] - $range_min) * $range_scale));
} else {
$new = $OriginalPixel;
$new[$key] = min(255, max(0, ($OriginalPixel[$key] - $range_min) * $range_scale));
}
$newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, $new['red'], $new['green'], $new['blue'], $new['alpha']);
ImageSetPixel($gdimg, $x, $y, $newColor);
}
}
return true;
}
function HistogramOverlay(&$gdimg, $bands='*', $colors='', $width=0.25, $height=0.25, $alignment='BR', $opacity=50, $margin=5) {
$Analysis = phpthumb_filters::HistogramAnalysis($gdimg, true);
$histW = round(($width > 1) ? min($width, ImageSX($gdimg)) : ImageSX($gdimg) * $width);
$histH = round(($width > 1) ? min($width, ImageSX($gdimg)) : ImageSX($gdimg) * $width);
if ($gdHist = ImageCreateTrueColor($histW, $histH)) {
$color_back = phpthumb_functions::ImageColorAllocateAlphaSafe($gdHist, 0, 0, 0, 127);
ImageFilledRectangle($gdHist, 0, 0, $histW, $histH, $color_back);
ImageAlphaBlending($gdHist, false);
ImageSaveAlpha($gdHist, true);
if ($gdHistTemp = ImageCreateTrueColor(256, 100)) {
$color_back_temp = phpthumb_functions::ImageColorAllocateAlphaSafe($gdHistTemp, 255, 0, 255, 127);
ImageAlphaBlending($gdHistTemp, false);
ImageSaveAlpha($gdHistTemp, true);
ImageFilledRectangle($gdHistTemp, 0, 0, ImageSX($gdHistTemp), ImageSY($gdHistTemp), $color_back_temp);
$DefaultColors = array('r'=>'FF0000', 'g'=>'00FF00', 'b'=>'0000FF', 'a'=>'999999', '*'=>'FFFFFF');
$Colors = explode(';', $colors);
$BandsToGraph = array_unique(preg_split('//', $bands));
$keys = array('r'=>'red', 'g'=>'green', 'b'=>'blue', 'a'=>'alpha', '*'=>'gray');
foreach ($BandsToGraph as $key => $band) {
if (!isset($keys[$band])) {
continue;
}
$PeakValue = max($Analysis[$keys[$band]]);
$thisColor = phpthumb_functions::ImageHexColorAllocate($gdHistTemp, phpthumb_functions::IsHexColor(@$Colors[$key]) ? $Colors[$key] : $DefaultColors[$band]);
$tempHeight = ImageSY($gdHistTemp);
for ($x = 0; $x <= 255; $x++) {
ImageLine($gdHistTemp, $x, $tempHeight - 1, $x, $tempHeight - 1 - round(@$Analysis[$keys[$band]][$x] / $PeakValue * $tempHeight), $thisColor);
}
ImageLine($gdHistTemp, 0, $tempHeight - 1, 255, $tempHeight - 1, $thisColor);
ImageLine($gdHistTemp, 0, $tempHeight - 2, 255, $tempHeight - 2, $thisColor);
}
ImageCopyResampled($gdHist, $gdHistTemp, 0, 0, 0, 0, ImageSX($gdHist), ImageSY($gdHist), ImageSX($gdHistTemp), ImageSY($gdHistTemp));
ImageDestroy($gdHistTemp);
} else {
return false;
}
phpthumb_filters::WatermarkOverlay($gdimg, $gdHist, $alignment, $opacity, $margin);
ImageDestroy($gdHist);
return true;
}
return false;
}
function ImageBorder(&$gdimg, $border_width, $radius_x, $radius_y, $hexcolor_border) {
$border_width = ($border_width ? $border_width : 1);
$radius_x = ($radius_x ? $radius_x : 0);
$radius_y = ($radius_y ? $radius_y : 0);
$output_width = ImageSX($gdimg);
$output_height = ImageSY($gdimg);
list($new_width, $new_height) = phpthumb_functions::ProportionalResize($output_width, $output_height, $output_width - max($border_width * 2, $radius_x), $output_height - max($border_width * 2, $radius_y));
$offset_x = ($radius_x ? $output_width - $new_width - $radius_x : 0);
$offset_y = ($radius_y ? $output_height - $new_height - $radius_y : 0);
if ($gd_border_canvas = phpthumb_functions::ImageCreateFunction($output_width, $output_height)) {
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=')) {
ImageSaveAlpha($gd_border_canvas, true);
}
ImageAlphaBlending($gd_border_canvas, false);
$color_background = phpthumb_functions::ImageColorAllocateAlphaSafe($gd_border_canvas, 255, 255, 255, 127);
ImageFilledRectangle($gd_border_canvas, 0, 0, $output_width, $output_height, $color_background);
$color_border = phpthumb_functions::ImageHexColorAllocate($gd_border_canvas, (phpthumb_functions::IsHexColor($hexcolor_border) ? $hexcolor_border : '000000'));
for ($i = 0; $i < $border_width; $i++) {
ImageLine($gd_border_canvas, floor($offset_x / 2) + $radius_x, $i, $output_width - $radius_x - ceil($offset_x / 2), $i, $color_border); // top
ImageLine($gd_border_canvas, floor($offset_x / 2) + $radius_x, $output_height - 1 - $i, $output_width - $radius_x - ceil($offset_x / 2), $output_height - 1 - $i, $color_border); // bottom
ImageLine($gd_border_canvas, floor($offset_x / 2) + $i, $radius_y, floor($offset_x / 2) + $i, $output_height - $radius_y, $color_border); // left
ImageLine($gd_border_canvas, $output_width - 1 - $i - ceil($offset_x / 2), $radius_y, $output_width - 1 - $i - ceil($offset_x / 2), $output_height - $radius_y, $color_border); // right
}
if ($radius_x && $radius_y) {
// PHP bug: ImageArc() with thicknesses > 1 give bad/undesirable/unpredicatable results
// Solution: Draw multiple 1px arcs side-by-side.
// Problem: parallel arcs give strange/ugly antialiasing problems
// Solution: draw non-parallel arcs, from one side of the line thickness at the start angle
// to the opposite edge of the line thickness at the terminating angle
for ($thickness_offset = 0; $thickness_offset < $border_width; $thickness_offset++) {
ImageArc($gd_border_canvas, floor($offset_x / 2) + 1 + $radius_x, $thickness_offset - 1 + $radius_y, $radius_x * 2, $radius_y * 2, 180, 270, $color_border); // top-left
ImageArc($gd_border_canvas, $output_width - $radius_x - 1 - ceil($offset_x / 2), $thickness_offset - 1 + $radius_y, $radius_x * 2, $radius_y * 2, 270, 360, $color_border); // top-right
ImageArc($gd_border_canvas, $output_width - $radius_x - 1 - ceil($offset_x / 2), $output_height - $thickness_offset - $radius_y, $radius_x * 2, $radius_y * 2, 0, 90, $color_border); // bottom-right
ImageArc($gd_border_canvas, floor($offset_x / 2) + 1 + $radius_x, $output_height - $thickness_offset - $radius_y, $radius_x * 2, $radius_y * 2, 90, 180, $color_border); // bottom-left
}
if ($border_width > 1) {
for ($thickness_offset = 0; $thickness_offset < $border_width; $thickness_offset++) {
ImageArc($gd_border_canvas, floor($offset_x / 2) + $thickness_offset + $radius_x, $radius_y, $radius_x * 2, $radius_y * 2, 180, 270, $color_border); // top-left
ImageArc($gd_border_canvas, $output_width - $thickness_offset - $radius_x - 1 - ceil($offset_x / 2), $radius_y, $radius_x * 2, $radius_y * 2, 270, 360, $color_border); // top-right
ImageArc($gd_border_canvas, $output_width - $thickness_offset - $radius_x - 1 - ceil($offset_x / 2), $output_height - $radius_y, $radius_x * 2, $radius_y * 2, 0, 90, $color_border); // bottom-right
ImageArc($gd_border_canvas, floor($offset_x / 2) + $thickness_offset + $radius_x, $output_height - $radius_y, $radius_x * 2, $radius_y * 2, 90, 180, $color_border); // bottom-left
}
}
}
phpthumb_functions::ImageResizeFunction($gd_border_canvas, $gdimg, floor(($output_width - $new_width) / 2), round(($output_height - $new_height) / 2), 0, 0, $new_width, $new_height, $output_width, $output_height);
ImageDestroy($gdimg);
$gdimg = phpthumb_functions::ImageCreateFunction($output_width, $output_height);
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=')) {
ImageSaveAlpha($gdimg, true);
}
ImageAlphaBlending($gdimg, false);
$gdimg_color_background = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, 255, 255, 255, 127);
ImageFilledRectangle($gdimg, 0, 0, $output_width, $output_height, $gdimg_color_background);
ImageCopy($gdimg, $gd_border_canvas, 0, 0, 0, 0, $output_width, $output_height);
//$gdimg = $gd_border_canvas;
ImageDestroy($gd_border_canvas);
return true;
} else {
$this->DebugMessage('FAILED: $gd_border_canvas = phpthumb_functions::ImageCreateFunction('.$output_width.', '.$output_height.')', __FILE__, __LINE__);
}
return false;
}
function Negative($gdimg) {
$ImageSX = ImageSX($gdimg);
$ImageSY = ImageSY($gdimg);
for ($x = 0; $x < $ImageSX; $x++) {
for ($y = 0; $y < $ImageSY; $y++) {
$currentPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
$newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, (~$currentPixel['red'] & 0xFF), (~$currentPixel['green'] & 0xFF), (~$currentPixel['blue'] & 0xFF), $currentPixel['alpha']);
ImageSetPixel($gdimg, $x, $y, $newColor);
}
}
return true;
}
function RoundedImageCorners(&$gdimg, $radius_x, $radius_y) {
// generate mask at twice desired resolution and downsample afterwards for easy antialiasing
// mask is generated as a white double-size elipse on a triple-size black background and copy-paste-resampled
// onto a correct-size mask image as 4 corners due to errors when the entire mask is resampled at once (gray edges)
if ($gdimg_cornermask_triple = phpthumb_functions::ImageCreateFunction($radius_x * 6, $radius_y * 6)) {
if ($gdimg_cornermask = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg), ImageSY($gdimg))) {
$color_transparent = ImageColorAllocate($gdimg_cornermask_triple, 255, 255, 255);
ImageFilledEllipse($gdimg_cornermask_triple, $radius_x * 3, $radius_y * 3, $radius_x * 4, $radius_y * 4, $color_transparent);
ImageFilledRectangle($gdimg_cornermask, 0, 0, ImageSX($gdimg), ImageSY($gdimg), $color_transparent);
ImageCopyResampled($gdimg_cornermask, $gdimg_cornermask_triple, 0, 0, $radius_x, $radius_y, $radius_x, $radius_y, $radius_x * 2, $radius_y * 2);
ImageCopyResampled($gdimg_cornermask, $gdimg_cornermask_triple, 0, ImageSY($gdimg) - $radius_y, $radius_x, $radius_y * 3, $radius_x, $radius_y, $radius_x * 2, $radius_y * 2);
ImageCopyResampled($gdimg_cornermask, $gdimg_cornermask_triple, ImageSX($gdimg) - $radius_x, ImageSY($gdimg) - $radius_y, $radius_x * 3, $radius_y * 3, $radius_x, $radius_y, $radius_x * 2, $radius_y * 2);
ImageCopyResampled($gdimg_cornermask, $gdimg_cornermask_triple, ImageSX($gdimg) - $radius_x, 0, $radius_x * 3, $radius_y, $radius_x, $radius_y, $radius_x * 2, $radius_y * 2);
phpthumb_filters::ApplyMask($gdimg_cornermask, $gdimg);
ImageDestroy($gdimg_cornermask);
$this->DebugMessage('RoundedImageCorners('.$radius_x.', '.$radius_y.') succeeded', __FILE__, __LINE__);
return true;
} else {
$this->DebugMessage('FAILED: $gdimg_cornermask = phpthumb_functions::ImageCreateFunction('.ImageSX($gdimg).', '.ImageSY($gdimg).')', __FILE__, __LINE__);
}
ImageDestroy($gdimg_cornermask_triple);
} else {
$this->DebugMessage('FAILED: $gdimg_cornermask_triple = phpthumb_functions::ImageCreateFunction('.($radius_x * 6).', '.($radius_y * 6).')', __FILE__, __LINE__);
}
return false;
}
function Sepia(&$gdimg, $amount, $targetColor) {
$amount = (is_numeric($amount) ? max(0, min(100, $amount)) : 50);
$targetColor = (phpthumb_functions::IsHexColor($targetColor) ? $targetColor : 'A28065');
$TargetPixel['red'] = hexdec(substr($targetColor, 0, 2));
$TargetPixel['green'] = hexdec(substr($targetColor, 2, 2));
$TargetPixel['blue'] = hexdec(substr($targetColor, 4, 2));
$ImageSX = ImageSX($gdimg);
$ImageSY = ImageSY($gdimg);
for ($x = 0; $x < $ImageSX; $x++) {
for ($y = 0; $y < $ImageSY; $y++) {
$OriginalPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
$GrayPixel = phpthumb_functions::GrayscalePixel($OriginalPixel);
// http://www.gimpguru.org/Tutorials/SepiaToning/
// "In the traditional sepia toning process, the tinting occurs most in
// the mid-tones: the lighter and darker areas appear to be closer to B&W."
$SepiaAmount = ((128 - abs($GrayPixel['red'] - 128)) / 128) * ($amount / 100);
foreach ($TargetPixel as $key => $value) {
$NewPixel[$key] = round(max(0, min(255, $GrayPixel[$key] * (1 - $SepiaAmount) + ($TargetPixel[$key] * $SepiaAmount))));
}
$newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, $NewPixel['red'], $NewPixel['green'], $NewPixel['blue'], $OriginalPixel['alpha']);
ImageSetPixel($gdimg, $x, $y, $newColor);
}
}
return true;
}
function Threshold(&$gdimg, $cutoff) {
$cutoff = ($cutoff ? $cutoff : 128);
for ($x = 0; $x < ImageSX($gdimg); $x++) {
for ($y = 0; $y < ImageSY($gdimg); $y++) {
$currentPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
$grayPixel = phpthumb_functions::GrayscalePixel($currentPixel);
if ($grayPixel['red'] < $cutoff) {
$newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, 0x00, 0x00, 0x00, $currentPixel['alpha']);
} else {
$newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, 0xFF, 0xFF, 0xFF, $currentPixel['alpha']);
}
ImageSetPixel($gdimg, $x, $y, $newColor);
}
}
return true;
}
function WhiteBalance(&$gdimg, $targetColor='') {
if (phpthumb_functions::IsHexColor($targetColor)) {
$targetPixel = array(
'red' => hexdec(substr($targetColor, 0, 2)),
'green' => hexdec(substr($targetColor, 2, 2)),
'blue' => hexdec(substr($targetColor, 4, 2))
);
} else {
$Analysis = phpthumb_filters::HistogramAnalysis($gdimg, false);
$targetPixel = array(
'red' => max(array_keys($Analysis['red'])),
'green' => max(array_keys($Analysis['green'])),
'blue' => max(array_keys($Analysis['blue']))
);
}
$grayValue = phpthumb_functions::GrayscaleValue($targetPixel['red'], $targetPixel['green'], $targetPixel['blue']);
$scaleR = $grayValue / $targetPixel['red'];
$scaleG = $grayValue / $targetPixel['green'];
$scaleB = $grayValue / $targetPixel['blue'];
for ($x = 0; $x < ImageSX($gdimg); $x++) {
for ($y = 0; $y < ImageSY($gdimg); $y++) {
$currentPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
$newColor = phpthumb_functions::ImageColorAllocateAlphaSafe(
$gdimg,
max(0, min(255, round($currentPixel['red'] * $scaleR))),
max(0, min(255, round($currentPixel['green'] * $scaleG))),
max(0, min(255, round($currentPixel['blue'] * $scaleB))),
$currentPixel['alpha']
);
ImageSetPixel($gdimg, $x, $y, $newColor);
}
}
return true;
}
function WatermarkText(&$gdimg, $text, $size, $alignment, $hex_color='000000', $ttffont='', $opacity=100, $margin=5, $angle=0) {
// text watermark requested
if (!$text) {
return false;
}
ImageAlphaBlending($gdimg, true);
$text = str_replace("\r\n", "\n", $text);
$text = str_replace("\r", "\n", $text);
$textlines = explode("\n", $text);
if (@is_readable($ttffont) && is_file($ttffont)) {
$opacity = 100 - intval(max(min($opacity, 100), 0));
$this->DebugMessage('Using TTF font "'.$ttffont.'"', __FILE__, __LINE__);
$TTFbox = ImageTTFbBox($size, $angle, $ttffont, $text);
$min_x = min($TTFbox[0], $TTFbox[2], $TTFbox[4], $TTFbox[6]);
$max_x = max($TTFbox[0], $TTFbox[2], $TTFbox[4], $TTFbox[6]);
//$text_width = round($max_x - $min_x + ($size * 0.5));
$text_width = round($max_x - $min_x);
$min_y = min($TTFbox[1], $TTFbox[3], $TTFbox[5], $TTFbox[7]);
$max_y = max($TTFbox[1], $TTFbox[3], $TTFbox[5], $TTFbox[7]);
//$text_height = round($max_y - $min_y + ($size * 0.5));
$text_height = round($max_y - $min_y);
$TTFboxChar = ImageTTFbBox($size, $angle, $ttffont, 'pH');
$char_min_y = min($TTFboxChar[1], $TTFboxChar[3], $TTFboxChar[5], $TTFboxChar[7]);
$char_max_y = max($TTFboxChar[1], $TTFboxChar[3], $TTFboxChar[5], $TTFboxChar[7]);
$char_height = round($char_max_y - $char_min_y);
switch ($alignment) {
case 'T':
$text_origin_x = round((ImageSX($gdimg) - $text_width) / 2);
$text_origin_y = $char_height + $margin;
break;
case 'B':
$text_origin_x = round((ImageSX($gdimg) - $text_width) / 2);
$text_origin_y = ImageSY($gdimg) - $TTFbox[1] - $margin;
break;
case 'L':
$text_origin_x = $margin;
$text_origin_y = round((ImageSY($gdimg) - $text_height) / 2) + $char_height;
break;
case 'R':
$text_origin_x = ImageSX($gdimg) - $text_width + $TTFbox[0] - $min_x + round($size * 0.25) - $margin;
$text_origin_y = round((ImageSY($gdimg) - $text_height) / 2) + $char_height;
break;
case 'C':
$text_origin_x = round((ImageSX($gdimg) - $text_width) / 2);
$text_origin_y = round((ImageSY($gdimg) - $text_height) / 2) + $char_height;
break;
case 'TL':
$text_origin_x = $margin;
$text_origin_y = $char_height + $margin;
break;
case 'TR':
$text_origin_x = ImageSX($gdimg) - $text_width + $TTFbox[0] - $min_x + round($size * 0.25) - $margin;
$text_origin_y = $char_height + $margin;
break;
case 'BL':
$text_origin_x = $margin;
$text_origin_y = ImageSY($gdimg) - $TTFbox[1] - $margin;
break;
case 'BR':
default:
$text_origin_x = ImageSX($gdimg) - $text_width + $TTFbox[0] - $min_x + round($size * 0.25) - $margin;
$text_origin_y = ImageSY($gdimg) - $TTFbox[1] - $margin;
break;
}
$letter_color_text = phpthumb_functions::ImageHexColorAllocate($gdimg, $hex_color, false, $opacity * 1.27);
if ($alignment == '*') {
$text_origin_y = $char_height + $margin;
while (($text_origin_y - $text_height) < ImageSY($gdimg)) {
$text_origin_x = $margin;
while ($text_origin_x < ImageSX($gdimg)) {
ImageTTFtext($gdimg, $size, $angle, $text_origin_x, $text_origin_y, $letter_color_text, $ttffont, $text);
$text_origin_x += ($text_width + $margin);
}
$text_origin_y += ($text_height + $margin);
}
} else {
//ImageRectangle($gdimg, $text_origin_x + $min_x, $text_origin_y + $TTFbox[1], $text_origin_x + $min_x + $text_width, $text_origin_y + $TTFbox[1] - $text_height, $letter_color_text);
ImageTTFtext($gdimg, $size, $angle, $text_origin_x, $text_origin_y, $letter_color_text, $ttffont, $text);
}
return true;
//if ($img_watermark = phpthumb_functions::ImageCreateFunction($text_width, $text_height)) {
// if ($img_watermark_mask = phpthumb_functions::ImageCreateFunction($text_width, $text_height)) {
// $letter_color_background = phpthumb_functions::ImageColorAllocateAlphaSafe($img_watermark, 127, 127, 127, 127);
// $letter_color_background_mask = phpthumb_functions::ImageColorAllocateAlphaSafe($img_watermark_mask, 127, 127, 127, 127);
// ImageFilledRectangle($img_watermark, 0, 0, ImageSX($img_watermark), ImageSY($img_watermark), $letter_color_background);
// ImageFilledRectangle($img_watermark_mask, 0, 0, ImageSX($img_watermark_mask), ImageSY($img_watermark_mask), $letter_color_background_mask);
//
// $letter_color_watermark = phpthumb_functions::ImageHexColorAllocate($img_watermark, $hex_color);
// $letter_color_watermark_mask = ImageColorAllocate($img_watermark_mask, 255, 255, 255);
//
// ImageTTFtext($img_watermark, $size, $angle, $TTFbox[0] - $min_x + round($size * 0.25), $TTFbox[1] - $min_y, $letter_color_watermark, $ttffont, $text);
// ImageTTFtext($img_watermark_mask, $size, $angle, $TTFbox[0] - $min_x + round($size * 0.25), $TTFbox[1] - $min_y, -$letter_color_watermark_mask, $ttffont, $text);
//
// $this->ApplyMask($img_watermark_mask, $img_watermark);
// $this->WatermarkOverlay($gdimg, $img_watermark, $alignment, $opacity, $margin);
//
// ImageDestroy($img_watermark);
// ImageDestroy($img_watermark_mask);
// return true;
// }
//}
} else {
$size = min(5, max(1, $size));
$this->DebugMessage('Using built-in font (size='.$size.') for text watermark'.($ttffont ? ' because $ttffont !is_readable('.$ttffont.')' : ''), __FILE__, __LINE__);
$text_width = 0;
$text_height = 0;
foreach ($textlines as $line) {
$text_width = max($text_width, ImageFontWidth($size) * strlen($line));
$text_height += ImageFontHeight($size);
}
if ($img_watermark = phpthumb_functions::ImageCreateFunction($text_width, $text_height)) {
ImageAlphaBlending($img_watermark, false);
$text_color_background = phpthumb_functions::ImageColorAllocateAlphaSafe($img_watermark, 255, 255, 255, 127);
ImageFilledRectangle($img_watermark, 0, 0, ImageSX($img_watermark), ImageSY($img_watermark), $text_color_background);
if ($angle) {
if ($img_watermark_mask = phpthumb_functions::ImageCreateFunction($text_width, $text_height)) {
$mask_color_background = ImageColorAllocate($img_watermark_mask, 0, 0, 0);
ImageAlphaBlending($img_watermark_mask, false);
ImageFilledRectangle($img_watermark_mask, 0, 0, ImageSX($img_watermark_mask), ImageSY($img_watermark_mask), $mask_color_background);
$mask_color_watermark = ImageColorAllocate($img_watermark_mask, 255, 255, 255);
}
}
$text_color_watermark = phpthumb_functions::ImageHexColorAllocate($img_watermark, $hex_color);
foreach ($textlines as $key => $line) {
switch ($alignment) {
case 'C':
case 'T':
case 'B':
$x_offset = round(($text_width - (ImageFontWidth($size) * strlen($line))) / 2);
break;
case 'L':
case 'TL':
case 'BL':
$x_offset = 0;
break;
case 'R':
case 'TR':
case 'BR':
default:
$x_offset = $text_width - (ImageFontWidth($size) * strlen($line));
break;
}
ImageString($img_watermark, $size, $x_offset, $key * ImageFontHeight($size), $line, $text_color_watermark);
if ($angle && $img_watermark_mask) {
ImageString($img_watermark_mask, $size, $x_offset, $key * ImageFontHeight($size), $text, $mask_color_watermark);
}
}
if ($angle && $img_watermark_mask) {
$img_watermark = ImageRotate($img_watermark, $angle, $text_color_background);
$img_watermark_mask = ImageRotate($img_watermark_mask, $angle, $mask_color_background);
phpthumb_filters::ApplyMask($img_watermark_mask, $img_watermark);
}
phpthumb_filters::WatermarkOverlay($gdimg, $img_watermark, $alignment, $opacity, $margin);
ImageDestroy($img_watermark);
return true;
}
}
return false;
}
function WatermarkOverlay(&$gdimg_dest, &$img_watermark, $alignment='*', $opacity=50, $margin=5) {
if (is_resource($gdimg_dest) && is_resource($img_watermark)) {
$watermark_source_x = 0;
$watermark_source_y = 0;
$img_source_width = ImageSX($gdimg_dest);
$img_source_height = ImageSY($gdimg_dest);
$watermark_source_width = ImageSX($img_watermark);
$watermark_source_height = ImageSY($img_watermark);
$watermark_opacity_percent = max(0, min(100, $opacity));
if ($margin < 1) {
$watermark_margin_percent = 1 - $margin;
} else {
$watermark_margin_percent = (100 - max(0, min(100, $margin))) / 100;
}
$watermark_margin_x = round((1 - $watermark_margin_percent) * $img_source_width);
$watermark_margin_y = round((1 - $watermark_margin_percent) * $img_source_height);
switch ($alignment) {
case '*':
if ($gdimg_tiledwatermark = phpthumb_functions::ImageCreateFunction($img_source_width, $img_source_height)) {
ImageAlphaBlending($gdimg_tiledwatermark, false);
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=')) {
ImageSaveAlpha($gdimg_tiledwatermark, true);
}
$text_color_transparent = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_tiledwatermark, 255, 0, 255, 127);
ImageFill($gdimg_tiledwatermark, 0, 0, $text_color_transparent);
// set the tiled image transparent color to whatever the untiled image transparency index is
// ImageColorTransparent($gdimg_tiledwatermark, ImageColorTransparent($img_watermark));
// a "cleaner" way of doing it, but can't handle the margin feature :(
// ImageSetTile($gdimg_tiledwatermark, $img_watermark);
// ImageFill($gdimg_tiledwatermark, 0, 0, IMG_COLOR_TILED);
// break;
// ImageFill($gdimg_tiledwatermark, 0, 0, ImageColorTransparent($gdimg_tiledwatermark));
// tile the image as many times as can fit
for ($x = $watermark_margin_x; $x < ($img_source_width + $watermark_source_width); $x += round($watermark_source_width + ((1 - $watermark_margin_percent) * $img_source_width))) {
for ($y = $watermark_margin_y; $y < ($img_source_height + $watermark_source_height); $y += round($watermark_source_height + ((1 - $watermark_margin_percent) * $img_source_height))) {
ImageCopy(
$gdimg_tiledwatermark,
$img_watermark,
$x,
$y,
0,
0,
min($watermark_source_width, $img_source_width - $x - ((1 - $watermark_margin_percent) * $img_source_width)),
min($watermark_source_height, $img_source_height - $y - ((1 - $watermark_margin_percent) * $img_source_height))
);
}
}
$watermark_source_width = ImageSX($gdimg_tiledwatermark);
$watermark_source_height = ImageSY($gdimg_tiledwatermark);
$watermark_destination_x = 0;
$watermark_destination_y = 0;
ImageDestroy($img_watermark);
$img_watermark = $gdimg_tiledwatermark;
}
break;
case 'T':
$watermark_destination_x = round((($img_source_width / 2) - ($watermark_source_width / 2)) + $watermark_margin_x);
$watermark_destination_y = $watermark_margin_y;
break;
case 'B':
$watermark_destination_x = round((($img_source_width / 2) - ($watermark_source_width / 2)) + $watermark_margin_x);
$watermark_destination_y = round(($img_source_height - $watermark_source_height) * $watermark_margin_percent);
break;
case 'L':
$watermark_destination_x = $watermark_margin_x;
$watermark_destination_y = round((($img_source_height / 2) - ($watermark_source_height / 2)) + $watermark_margin_y);
break;
case 'R':
$watermark_destination_x = round(($img_source_width - $watermark_source_width) * $watermark_margin_percent);
$watermark_destination_y = round((($img_source_height / 2) - ($watermark_source_height / 2)) + $watermark_margin_y);
break;
case 'C':
$watermark_destination_x = round(($img_source_width / 2) - ($watermark_source_width / 2));
$watermark_destination_y = round(($img_source_height / 2) - ($watermark_source_height / 2));
break;
case 'TL':
$watermark_destination_x = $watermark_margin_x;
$watermark_destination_y = $watermark_margin_y;
break;
case 'TR':
$watermark_destination_x = round(($img_source_width - $watermark_source_width) * $watermark_margin_percent);
$watermark_destination_y = $watermark_margin_y;
break;
case 'BL':
$watermark_destination_x = $watermark_margin_x;
$watermark_destination_y = round(($img_source_height - $watermark_source_height) * $watermark_margin_percent);
break;
case 'BR':
default:
$watermark_destination_x = round(($img_source_width - $watermark_source_width) * $watermark_margin_percent);
$watermark_destination_y = round(($img_source_height - $watermark_source_height) * $watermark_margin_percent);
break;
}
ImageAlphaBlending($gdimg_dest, false);
if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=')) {
ImageSaveAlpha($gdimg_dest, true);
ImageSaveAlpha($img_watermark, true);
}
phpthumb_functions::ImageCopyRespectAlpha($gdimg_dest, $img_watermark, $watermark_destination_x, $watermark_destination_y, 0, 0, $watermark_source_width, $watermark_source_height, $watermark_opacity_percent);
return true;
}
return false;
}
}
?>
Other Image Galleries Scripts:
