iek.gd.inc in Image effect kit 7
GD2 toolkit for image manipulation within Drupal.
File
iek.gd.incView source
<?php
/**
* @file
* GD2 toolkit for image manipulation within Drupal.
*/
/**
* Add an image border by using the GD toolkit.
*
* @param object $image
* An image object. The $image->resource, $image->info['width'], and
* $image->info['height'] values will be modified by this call.
* @param array $data
* An array that contains all the effect parameters.
* $data['border_color']: image border color, in Hex format as #cccccc.
* $data['border_thick_top']: image top border thick, in pixels.
* $data['border_thick_right']: image right border thick, in pixels.
* $data['border_thick_bottom']: image bottom border thick, in pixels.
* $data['border_thick_left']: image left border thick, in pixels.
*
* @return bool
* TRUE or FALSE, based on success.
*/
function iek_gd_border(stdClass $image, $data) {
$border_color = $data['border_color'];
$border_thick_top = $data['border_thick_top'];
$border_thick_right = $data['border_thick_right'];
$border_thick_bottom = $data['border_thick_bottom'];
$border_thick_left = $data['border_thick_left'];
$width = $image->info['width'];
$height = $image->info['height'];
$border_rgb = iek_image_hex2rgb($border_color);
$bg_rgb = iek_image_hex2rgb('#ffffff');
$dst = imagecreatetruecolor($width, $height);
// Creates background.
$bg = imagecolorallocate($dst, $bg_rgb['red'], $bg_rgb['green'], $bg_rgb['blue']);
// Defines border color.
$border_colors = imagecolorallocate($dst, $border_rgb['red'], $border_rgb['green'], $border_rgb['blue']);
imagefilledrectangle($dst, 0, 0, $width, $height, $border_colors);
imagefilledrectangle($dst, $border_thick_left, $border_thick_top, $width - $border_thick_right - 1, $height - $border_thick_bottom - 1, $bg);
iek_gd_resize($image, array(
'width' => $width - ($border_thick_left + $border_thick_right),
'height' => $height - ($border_thick_top + $border_thick_bottom),
'blank_margin' => FALSE,
'blank_margin_bg_color' => $border_color,
'position' => 'middle_center',
));
if (!imagecopy($dst, $image->resource, $border_thick_left, $border_thick_top, 0, 0, $width - ($border_thick_left + $border_thick_right), $height - ($border_thick_top + $border_thick_bottom))) {
return FALSE;
}
// Update image object.
$image->resource = $dst;
$image->info['width'] = $width;
$image->info['height'] = $height;
return TRUE;
}
/**
* Add rounded corner by using the GD toolkit.
*
* @param object $image
* An image object. The $image->resource, $image->info['width'], and
* $image->info['height'] values will be modified by this call.
* @param array $data
* An array that contains all the effect parameters.
* $data['radius']: radius of the corner, in pixels.
*
* @return bool
* TRUE or FALSE, based on success.
*/
function iek_gd_corner(stdClass $image, $data) {
$width = $image->info['width'];
$height = $image->info['height'];
$radius = $data['radius'];
// Finds unique color.
do {
$r = rand(0, 255);
$g = rand(0, 255);
$b = rand(0, 255);
} while (imagecolorexact($image->resource, $r, $g, $b) < 0);
$new_width = $width;
$new_height = $height;
$img = imagecreatetruecolor($new_width, $new_height);
$alphacolor = imagecolorallocatealpha($img, $r, $g, $b, 127);
imagealphablending($img, FALSE);
imagesavealpha($img, TRUE);
imagefilledrectangle($img, 0, 0, $new_width, $new_height, $alphacolor);
imagefill($img, 0, 0, $alphacolor);
imagecopyresampled($img, $image->resource, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagearc($img, $radius - 1, $radius - 1, $radius * 2, $radius * 2, 180, 270, $alphacolor);
imagefilltoborder($img, 0, 0, $alphacolor, $alphacolor);
imagearc($img, $new_width - $radius, $radius - 1, $radius * 2, $radius * 2, 270, 0, $alphacolor);
imagefilltoborder($img, $new_width - 1, 0, $alphacolor, $alphacolor);
imagearc($img, $radius - 1, $new_height - $radius, $radius * 2, $radius * 2, 90, 180, $alphacolor);
imagefilltoborder($img, 0, $new_height - 1, $alphacolor, $alphacolor);
imagearc($img, $new_width - $radius, $new_height - $radius, $radius * 2, $radius * 2, 0, 90, $alphacolor);
imagefilltoborder($img, $new_width - 1, $new_height - 1, $alphacolor, $alphacolor);
imagealphablending($img, TRUE);
imagecolortransparent($img, $alphacolor);
// Resizes image down.
$dst = imagecreatetruecolor($width, $height);
imagealphablending($dst, FALSE);
imagesavealpha($dst, TRUE);
imagefilledrectangle($dst, 0, 0, $width, $height, $alphacolor);
imagecopyresampled($dst, $img, 0, 0, 0, 0, $width, $height, $new_width, $new_height);
// Update image object.
$image->resource = $dst;
$image->info['width'] = $width;
$image->info['height'] = $height;
return TRUE;
}
/**
* Add an image padding by using the GD toolkit.
*
* @param object $image
* An image object. The $image->resource, $image->info['width'], and
* $image->info['height'] values will be modified by this call.
* @param array $data
* An array that contains all the effect parameters.
* $data['padding_top']: image top padding, in pixels.
* $data['padding_right']: image right padding, in pixels.
* $data['padding_bottom']: image bottom padding, in pixels.
* $data['padding_left']: image left padding, in pixels.
* $data['bg_color']: image background color, in Hex format as #cccccc.
*
* @return bool
* TRUE or FALSE, based on success.
*/
function iek_gd_padding(stdClass $image, $data) {
$padding_top = $data['padding_top'];
$padding_right = $data['padding_right'];
$padding_bottom = $data['padding_bottom'];
$padding_left = $data['padding_left'];
$bg_color = $data['bg_color'];
$width = $image->info['width'];
$height = $image->info['height'];
$dst = imagecreatetruecolor($width, $height);
$bg_rgb = iek_image_hex2rgb($bg_color);
$bg = imagecolorallocate($dst, $bg_rgb['red'], $bg_rgb['green'], $bg_rgb['blue']);
imagefilledrectangle($dst, 0, 0, $width, $height, $bg);
iek_gd_resize($image, array(
'width' => $width - ($padding_left + $padding_right),
'height' => $height - ($padding_top + $padding_bottom),
'blank_margin' => TRUE,
'blank_margin_bg_color' => $bg_color,
'position' => 'middle_center',
));
if (!imagecopy($dst, $image->resource, $padding_left, $padding_top, 0, 0, $width - ($padding_left + $padding_right), $height - ($padding_top + $padding_bottom))) {
return FALSE;
}
imagedestroy($image->resource);
// Update image object.
$image->resource = $dst;
$image->info['width'] = $width;
$image->info['height'] = $height;
return TRUE;
}
/**
* Resize an image by using the GD toolkit.
*
* @param object $image
* An image object. The $image->resource, $image->info['width'], and
* $image->info['height'] values will be modified by this call.
* @param array $data
* An array that contains all the effect parameters.
* $data['width']: destination image width, in pixels.
* $data['height']: destination image height, in pixels.
* $data['blank_margin']: TRUE to show blank margin, FALSE to fulfill bg.
* $data['blank_margin_bg_color']: the background color of the blank margin.
* $data['position']: the starting position to crop the image.
*
* @return bool
* TRUE or FALSE, based on success.
*/
function iek_gd_resize(stdClass $image, $data) {
$debug = FALSE;
// Resets width and height to zero if they are negative values.
// Sees the issue: https://drupal.org/node/2141463.
if ($data['width'] < 0 || $data['height'] < 0) {
$image->info['width'] = 0;
$image->info['height'] = 0;
return TRUE;
}
$width = $data['width'];
$height = $data['height'];
$blank_margin = $data['blank_margin'];
$blank_margin_bg_color = !empty($data['blank_margin_bg_color']) ? $data['blank_margin_bg_color'] : '#ffffff';
$position = $data['position'];
$dst = imagecreatetruecolor($width, $height);
$bg_rgb = iek_image_hex2rgb($blank_margin_bg_color);
$bg = imagecolorallocate($dst, $bg_rgb['red'], $bg_rgb['green'], $bg_rgb['blue']);
imagefilledrectangle($dst, 0, 0, $width, $height, $bg);
if ($blank_margin) {
image_scale($image, $width, $height, TRUE);
}
else {
$src_ratio = round($image->info['width'] / $image->info['height'], 8);
$dst_ratio = round($width / $height, 8);
if ($src_ratio >= 1) {
if ($dst_ratio >= 1) {
if ($src_ratio > $dst_ratio) {
if ($debug) {
dpm('Case 1');
}
$scaled_height = $width;
$scaled_width = $src_ratio * $width;
}
else {
if ($debug) {
dpm('Case 2');
}
$scaled_width = $width;
$scaled_height = $width / $src_ratio;
}
}
else {
if ($debug) {
dpm('Case 3');
}
$scaled_height = $height;
$scaled_width = $src_ratio * $height;
}
}
else {
if ($dst_ratio >= 1) {
if ($debug) {
dpm('Case 11');
}
$scaled_width = $width;
$scaled_height = $width / $src_ratio;
}
else {
if ($src_ratio < $dst_ratio) {
if ($debug) {
dpm('Case 12');
}
$scaled_width = $height;
$scaled_height = $height / $src_ratio;
}
else {
if ($debug) {
dpm('Case 13');
}
$scaled_height = $height;
$scaled_width = $height * $src_ratio;
}
}
}
$scaled_ratio = round($scaled_width / $scaled_height, 8);
if ($debug) {
dpm('$src : ' . $image->info['width'] . 'x' . $image->info['height']);
dpm('$dst : ' . $width . 'x' . $height);
dpm('$scaled : ' . $scaled_width . 'x' . $scaled_height);
if ($src_ratio == $scaled_ratio && $scaled_width - $width >= 0 && $scaled_height - $height >= 0) {
dpm('Good scaled:');
dpm('$src_ratio : ' . $src_ratio);
dpm('$scaled_ratio : ' . $scaled_ratio);
}
else {
dpm('Bad scaled:');
dpm('$src_ratio : ' . $src_ratio);
dpm('$scaled_ratio : ' . $scaled_ratio);
}
}
image_scale($image, $scaled_width, $scaled_height, TRUE);
}
switch ($position) {
case 'coordinate':
$src_x = $data['x'];
$src_y = $data['y'];
$dst_x = 0;
$dst_y = 0;
break;
case 'top_left':
$src_x = 0;
$src_y = 0;
$dst_x = 0;
$dst_y = 0;
break;
case 'top_center':
$src_x = -(($image->info['width'] - $width) / 2);
$src_y = 0;
$dst_x = 0;
$dst_y = 0;
break;
case 'top_right':
$src_x = -($image->info['width'] - $width);
$src_y = 0;
$dst_x = 0;
$dst_y = 0;
break;
case 'middle_left':
$src_x = 0;
$src_y = -(($image->info['height'] - $height) / 2);
$dst_x = 0;
$dst_y = 0;
break;
case 'middle_center':
$src_x = -(($image->info['width'] - $width) / 2);
$src_y = -(($image->info['height'] - $height) / 2);
$dst_x = 0;
$dst_y = 0;
break;
case 'middle_right':
$src_x = -($image->info['width'] - $width);
$src_y = -(($image->info['height'] - $height) / 2);
$dst_x = 0;
$dst_y = 0;
break;
case 'bottom_left':
$src_x = 0;
$src_y = -($image->info['height'] - $height);
$dst_x = 0;
$dst_y = 0;
break;
case 'bottom_center':
$src_x = -(($image->info['width'] - $width) / 2);
$src_y = -($image->info['height'] - $height);
$dst_x = 0;
$dst_y = 0;
break;
case 'bottom_right':
$src_x = -($image->info['width'] - $width);
$src_y = -($image->info['height'] - $height);
$dst_x = 0;
$dst_y = 0;
break;
default:
$src_x = 0;
$src_y = 0;
$dst_x = 0;
$dst_y = 0;
}
if (!imagecopy($dst, $image->resource, $src_x, $src_y, $dst_x, $dst_y, $image->info['width'], $image->info['height'])) {
return FALSE;
}
imagedestroy($image->resource);
// Update image object.
$image->resource = $dst;
$image->info['width'] = $width;
$image->info['height'] = $height;
return TRUE;
}
/**
* Add a watermark text on an image by using the GD toolkit.
*
* @param object $image
* An image object. The $image->resource, $image->info['width'], and
* $image->info['height'] values will be modified by this call.
* @param array $data
* An array that contains all the effect parameters.
* $data['font']: the font of watermark.
* $data['color']: the font color of watermark.
* $data['angle']: the rotate angle of watermark.
* $data['x']: the x-axis of watermark.
* $data['y']: the y-axis of watermark.
*
* @return bool
* TRUE or FALSE, based on success.
*/
function iek_gd_watermark(stdClass $image, $data) {
// Replaces text with tokens.
$text = token_replace($data['text']);
$angle = 360 - $data['angle'];
$size = $data['size'];
$position = $data['position'];
$padding_top = $data['padding_top'];
$padding_right = $data['padding_right'];
$padding_bottom = $data['padding_bottom'];
$padding_left = $data['padding_left'];
$width = $image->info['width'];
$height = $image->info['height'];
$iek_font = iek_get_watermark_fonts($data['font']);
$font = drupal_realpath($iek_font['path'] . '/' . $iek_font['file']);
$dst = imagecreatetruecolor($width, $height);
$text_rgb = iek_image_hex2rgb($data['color']);
$text_color = imagecolorallocate($dst, $text_rgb['red'], $text_rgb['green'], $text_rgb['blue']);
// Wraps the watermark text.
$bbox = imagettfbbox($size, $angle, $font, $text);
$bbox_width = abs($bbox[2] - $bbox[0]);
$bbox_height = abs($bbox[5] - $bbox[3]);
$bbox_character_width = 0;
if (strlen($text)) {
$bbox_character_width = ceil($bbox_width / strlen($text));
}
$bbox_character_height = ceil($bbox_height);
$text_arr = array();
if ($bbox_character_width) {
$text_arr = chunk_split($text, ceil(($width - abs(($padding_left + $padding_right) * 2)) / $bbox_character_width), ':::');
$text_arr = explode(':::', $text_arr);
}
switch ($position) {
case 'top_left':
$new_y = $bbox_character_height + $padding_top;
foreach ($text_arr as $text_arr_item) {
$new_x = $padding_left;
imagettftext($image->resource, $size, $angle, $new_x, $new_y, $text_color, $font, $text_arr_item);
$new_y += $bbox_character_height;
}
break;
case 'top_center':
$new_y = $bbox_character_height + $padding_top;
foreach ($text_arr as $text_arr_item) {
$new_x = ($width - $bbox_character_width * strlen($text_arr_item)) / 2;
imagettftext($image->resource, $size, $angle, $new_x, $new_y, $text_color, $font, $text_arr_item);
$new_y += $bbox_character_height;
}
break;
case 'top_right':
$new_y = $bbox_character_height + $padding_top;
foreach ($text_arr as $text_arr_item) {
$cur_bbox = imagettfbbox($size, $angle, $font, $text_arr_item);
$cur_bbox_width = abs($cur_bbox[2] - $cur_bbox[0]);
$new_x = $width - $cur_bbox_width - $padding_right;
imagettftext($image->resource, $size, $angle, $new_x, $new_y, $text_color, $font, $text_arr_item);
$new_y += $bbox_character_height;
}
break;
case 'middle_left':
$new_y = $height / 2 - $bbox_character_height * count($text_arr) / 2 + $bbox_character_height;
foreach ($text_arr as $text_arr_item) {
$new_x = $padding_left;
imagettftext($image->resource, $size, $angle, $new_x, $new_y, $text_color, $font, $text_arr_item);
$new_y += $bbox_character_height;
}
break;
case 'middle_center':
$new_y = $height / 2 - $bbox_character_height * count($text_arr) / 2 + $bbox_character_height;
foreach ($text_arr as $text_arr_item) {
$new_x = ($width - $bbox_character_width * strlen($text_arr_item)) / 2;
imagettftext($image->resource, $size, $angle, $new_x, $new_y, $text_color, $font, $text_arr_item);
$new_y += $bbox_character_height;
}
break;
case 'middle_right':
$new_y = $height / 2 - $bbox_character_height * count($text_arr) / 2 + $bbox_character_height;
foreach ($text_arr as $text_arr_item) {
$cur_bbox = imagettfbbox($size, $angle, $font, $text_arr_item);
$cur_bbox_width = abs($cur_bbox[2] - $cur_bbox[0]);
$new_x = $width - $cur_bbox_width - $padding_left;
imagettftext($image->resource, $size, $angle, $new_x, $new_y, $text_color, $font, $text_arr_item);
$new_y += $bbox_character_height;
}
break;
case 'bottom_left':
$new_y = $height - $bbox_character_height * count($text_arr) - $padding_bottom + $bbox_character_height * 2;
foreach ($text_arr as $text_arr_item) {
$new_x = $padding_left;
imagettftext($image->resource, $size, $angle, $new_x, $new_y, $text_color, $font, $text_arr_item);
$new_y += $bbox_character_height;
}
break;
case 'bottom_center':
$new_y = $height - $bbox_character_height * count($text_arr) - $padding_bottom + $bbox_character_height * 2;
foreach ($text_arr as $text_arr_item) {
$new_x = ($width - $bbox_character_width * strlen($text_arr_item)) / 2;
imagettftext($image->resource, $size, $angle, $new_x, $new_y, $text_color, $font, $text_arr_item);
$new_y += $bbox_character_height;
}
break;
case 'bottom_right':
$new_y = $height - $bbox_character_height * count($text_arr) - $padding_bottom + $bbox_character_height * 2;
foreach ($text_arr as $text_arr_item) {
$cur_bbox = imagettfbbox($size, 0, $font, $text_arr_item);
$cur_bbox_width = abs($cur_bbox[2] - $cur_bbox[0]);
$new_x = $width - $cur_bbox_width - $padding_left;
imagettftext($image->resource, $size, $angle, $new_x, $new_y, $text_color, $font, $text_arr_item);
$new_y += $bbox_character_height;
}
break;
default:
$new_x = 0;
$new_y = 0;
}
return TRUE;
}
/**
* Add a overlay on an image by using the GD toolkit.
*
* @param object $image
* An image object. The $image->resource, $image->info['width'], and
* $image->info['height'] values will be modified by this call.
* @param array $data
* An array that contains all the effect parameters.
* $data['overlay_name']: the id name of overlay image.
* $data['bg_offset']: the font of watermark.
* $data['overlay_offset']: the font color of watermark.
*
* @return bool
* TRUE or FALSE, based on success.
*/
function iek_gd_overlay(stdClass $image, $data) {
$iek_overlay = iek_get_overlays($data['overlay_name']);
$overlay_path = drupal_realpath($iek_overlay['path'] . '/' . $iek_overlay['file']);
$overlay_info = image_get_info($overlay_path);
$overlay_tmp = iek_gd_create_image($overlay_path);
imagecopyresampled($image->resource, $overlay_tmp, $data['bg_offset'], $data['bg_offset'], $data['overlay_offset'], $data['overlay_offset'], $image->info['width'] - $data['bg_offset'] * 2, $image->info['height'] - $data['bg_offset'] * 2, $overlay_info['width'] - $data['overlay_offset'] * 2, $overlay_info['height'] - $data['overlay_offset'] * 2);
return TRUE;
}
/**
* Add a filter on an image by using the GD toolkit.
*
* @param object $image
* An image object. The $image->resource, $image->info['width'], and
* $image->info['height'] values will be modified by this call.
* @param array $data
* An array that contains all the effect parameters.
* $data['filter_name']: the filter that will be added to an image.
* $data['repeat']: the times to repeat the same filter action.
* $data['arg1']:
* IMG_FILTER_BRIGHTNESS: Brightness level.
* IMG_FILTER_CONTRAST: Contrast level.
* IMG_FILTER_COLORIZE: Value of red component.
* IMG_FILTER_SMOOTH: Smoothness level.
* IMG_FILTER_PIXELATE: Block size in pixels.
* $data['arg2']:
* IMG_FILTER_COLORIZE: Value of green component.
* IMG_FILTER_PIXELATE: Whether to use advanced pixelation effect or not.
* $data['arg3']:
* IMG_FILTER_COLORIZE: Value of blue component.
* $data['arg4']:
* IMG_FILTER_COLORIZE: Alpha channel, A value between 0 and 127.
* 0 indicates completely opaque while 127 indicates completely transparent.
*
* @return bool
* TRUE or FALSE, based on success.
*/
function iek_gd_filter(stdClass $image, $data) {
$filter_name = $data['filter_name'];
$repeat = isset($data['repeat']) ? $data['repeat'] : 1;
$arg1 = $data['arg1'];
$arg2 = $data['arg2'];
$arg3 = $data['arg3'];
$arg4 = $data['arg4'];
switch ($filter_name) {
case IMG_FILTER_BRIGHTNESS:
case IMG_FILTER_CONTRAST:
case IMG_FILTER_SMOOTH:
for ($i = 0; $i < $repeat; $i++) {
imagefilter($image->resource, $filter_name, $arg1);
}
break;
case IMG_FILTER_PIXELATE:
for ($i = 0; $i < $repeat; $i++) {
imagefilter($image->resource, $filter_name, $arg1, $arg2);
}
break;
case IMG_FILTER_COLORIZE:
for ($i = 0; $i < $repeat; $i++) {
imagefilter($image->resource, $filter_name, $arg1, $arg2, $arg3, $arg4);
}
break;
default:
for ($i = 0; $i < $repeat; $i++) {
imagefilter($image->resource, $filter_name);
}
break;
}
return TRUE;
}Functions
Name |
Description |
|---|---|
| iek_gd_border | Add an image border by using the GD toolkit. |
| iek_gd_corner | Add rounded corner by using the GD toolkit. |
| iek_gd_filter | Add a filter on an image by using the GD toolkit. |
| iek_gd_overlay | Add a overlay on an image by using the GD toolkit. |
| iek_gd_padding | Add an image padding by using the GD toolkit. |
| iek_gd_resize | Resize an image by using the GD toolkit. |
| iek_gd_watermark | Add a watermark text on an image by using the GD toolkit. |