Improve the Image manipulation library
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index 20ca1f0..70a1279 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -1,4 +1,4 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
@@ -334,20 +334,14 @@
$this->y_axis = ($this->y_axis == '' OR ! is_numeric($this->y_axis)) ? 0 : $this->y_axis;
// Watermark-related Stuff...
- if ($this->wm_font_color != '')
+ if ($this->wm_font_color != '' AND strlen($this->wm_font_color) === 6)
{
- if (strlen($this->wm_font_color) == 6)
- {
- $this->wm_font_color = '#'.$this->wm_font_color;
- }
+ $this->wm_font_color = '#'.$this->wm_font_color;
}
- if ($this->wm_shadow_color != '')
+ if ($this->wm_shadow_color != '' AND strlen($this->wm_shadow_color) === 6)
{
- if (strlen($this->wm_shadow_color) == 6)
- {
- $this->wm_shadow_color = '#'.$this->wm_shadow_color;
- }
+ $this->wm_shadow_color = '#'.$this->wm_shadow_color;
}
if ($this->wm_overlay_path != '')
@@ -381,13 +375,7 @@
*/
public function resize()
{
- $protocol = 'image_process_'.$this->image_library;
-
- if (preg_match('/gd2$/i', $protocol))
- {
- $protocol = 'image_process_gd';
- }
-
+ $protocol = (strtolower(substr($this->image_library, 0, -3)) === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library;
return $this->$protocol('resize');
}
@@ -404,13 +392,7 @@
*/
public function crop()
{
- $protocol = 'image_process_'.$this->image_library;
-
- if (preg_match('/gd2$/i', $protocol))
- {
- $protocol = 'image_process_gd';
- }
-
+ $protocol = (strtolower(substr($this->image_library, 0, -3)) === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library;
return $this->$protocol('crop');
}
@@ -453,7 +435,6 @@
if ($this->image_library == 'imagemagick' OR $this->image_library == 'netpbm')
{
$protocol = 'image_process_'.$this->image_library;
-
return $this->$protocol('rotate');
}
@@ -484,20 +465,14 @@
// If the target width/height match the source, AND if the new file name is not equal to the old file name
// we'll simply make a copy of the original with the new name... assuming dynamic rendering is off.
- if ($this->dynamic_output === FALSE)
+ if ($this->dynamic_output === FALSE AND $this->orig_width == $this->width AND $this->orig_height == $this->height)
{
- if ($this->orig_width == $this->width AND $this->orig_height == $this->height)
+ if ($this->source_image != $this->new_image AND @copy($this->full_src_path, $this->full_dst_path))
{
- if ($this->source_image != $this->new_image)
- {
- if (@copy($this->full_src_path, $this->full_dst_path))
- {
- @chmod($this->full_dst_path, FILE_WRITE_MODE);
- }
- }
-
- return TRUE;
+ @chmod($this->full_dst_path, FILE_WRITE_MODE);
}
+
+ return TRUE;
}
// Let's set up our values based on the action
@@ -601,9 +576,7 @@
if ( ! preg_match("/convert$/i", $this->library_path))
{
- $this->library_path = rtrim($this->library_path, '/').'/';
-
- $this->library_path .= 'convert';
+ $this->library_path = rtrim($this->library_path, '/').'/convert';
}
// Execute the command
@@ -808,11 +781,8 @@
if ($this->rotation_angle == 'hor')
{
- for ($i = 0; $i < $height; $i++)
+ for ($i = 0; $i < $height; $i++, $left = 0, $right = $width-1)
{
- $left = 0;
- $right = $width-1;
-
while ($left < $right)
{
$cl = imagecolorat($src_img, $left, $i);
@@ -828,11 +798,8 @@
}
else
{
- for ($i = 0; $i < $width; $i++)
+ for ($i = 0; $i < $width; $i++, $top = 0, $bot = $height-1)
{
- $top = 0;
- $bot = $height-1;
-
while ($top < $bot)
{
$ct = imagecolorat($src_img, $i, $top);
@@ -993,12 +960,9 @@
{
$this->image_display_gd($src_img);
}
- else
+ elseif ( ! $this->image_save_gd($src_img))
{
- if ( ! $this->image_save_gd($src_img))
- {
- return FALSE;
- }
+ return FALSE;
}
imagedestroy($src_img);
@@ -1065,7 +1029,9 @@
if ($this->wm_use_truetype == TRUE)
{
if ($this->wm_font_size == '')
- $this->wm_font_size = '17';
+ {
+ $this->wm_font_size = 17;
+ }
$fontwidth = $this->wm_font_size-($this->wm_font_size/4);
$fontheight = $this->wm_font_size;
@@ -1090,11 +1056,11 @@
switch ($this->wm_vrt_alignment)
{
- case "T" :
+ case 'T':
break;
- case "M": $y_axis += ($this->orig_height/2)+($fontheight/2);
+ case 'M': $y_axis += ($this->orig_height/2)+($fontheight/2);
break;
- case "B": $y_axis += ($this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight/2));
+ case 'B': $y_axis += ($this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight/2));
break;
}
@@ -1104,32 +1070,34 @@
// Set horizontal alignment
switch ($this->wm_hor_alignment)
{
- case "L":
+ case 'L':
break;
- case "R":
- if ($this->wm_use_drop_shadow)
- $x_shad += ($this->orig_width - $fontwidth*strlen($this->wm_text));
- $x_axis += ($this->orig_width - $fontwidth*strlen($this->wm_text));
+ case 'R':
+ if ($this->wm_use_drop_shadow)
+ {
+ $x_shad += ($this->orig_width - $fontwidth*strlen($this->wm_text));
+ $x_axis += ($this->orig_width - $fontwidth*strlen($this->wm_text));
+ }
break;
- case "C":
- if ($this->wm_use_drop_shadow)
- $x_shad += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2);
- $x_axis += floor(($this->orig_width -$fontwidth*strlen($this->wm_text))/2);
+ case 'C':
+ if ($this->wm_use_drop_shadow)
+ {
+ $x_shad += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2);
+ $x_axis += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2);
+ }
break;
}
// Add the text to the source image
- if ($this->wm_use_truetype)
+ if ($this->wm_use_truetype AND $this->wm_use_drop_shadow)
{
- if ($this->wm_use_drop_shadow)
- imagettftext($src_img, $this->wm_font_size, 0, $x_shad, $y_shad, $drp_color, $this->wm_font_path, $this->wm_text);
- imagettftext($src_img, $this->wm_font_size, 0, $x_axis, $y_axis, $txt_color, $this->wm_font_path, $this->wm_text);
+ imagettftext($src_img, $this->wm_font_size, 0, $x_shad, $y_shad, $drp_color, $this->wm_font_path, $this->wm_text);
+ imagettftext($src_img, $this->wm_font_size, 0, $x_axis, $y_axis, $txt_color, $this->wm_font_path, $this->wm_text);
}
- else
+ elseif ($this->wm_use_drop_shadow)
{
- if ($this->wm_use_drop_shadow)
- imagestring($src_img, $this->wm_font_size, $x_shad, $y_shad, $this->wm_text, $drp_color);
- imagestring($src_img, $this->wm_font_size, $x_axis, $y_axis, $this->wm_text, $txt_color);
+ imagestring($src_img, $this->wm_font_size, $x_shad, $y_shad, $this->wm_text, $drp_color);
+ imagestring($src_img, $this->wm_font_size, $x_axis, $y_axis, $this->wm_text, $txt_color);
}
// Output the final image
@@ -1369,26 +1337,24 @@
}
$vals = getimagesize($path);
-
$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png');
-
- $mime = (isset($types[$vals['2']])) ? 'image/'.$types[$vals['2']] : 'image/jpg';
+ $mime = (isset($types[$vals[2]])) ? 'image/'.$types[$vals[2]] : 'image/jpg';
if ($return == TRUE)
{
- $v['width'] = $vals['0'];
- $v['height'] = $vals['1'];
- $v['image_type'] = $vals['2'];
- $v['size_str'] = $vals['3'];
- $v['mime_type'] = $mime;
-
- return $v;
+ return array(
+ 'width' => $vals[0],
+ 'height' => $vals[1],
+ 'image_type' => $vals[2],
+ 'size_str' => $vals[3],
+ 'mime_type' => $mime
+ );
}
- $this->orig_width = $vals['0'];
- $this->orig_height = $vals['1'];
- $this->image_type = $vals['2'];
- $this->size_str = $vals['3'];
+ $this->orig_width = $vals[0];
+ $this->orig_height = $vals[1];
+ $this->image_type = $vals[2];
+ $this->size_str = $vals[3];
$this->mime_type = $mime;
return TRUE;
@@ -1482,10 +1448,10 @@
{
if ( ! extension_loaded('gd'))
{
- if ( ! dl('gd.so'))
- {
- return FALSE;
- }
+ /* As it is stated in the PHP manual, dl() is not always available
+ * and even if so - it could generate an E_WARNING message on failure
+ */
+ return (function_exists('dl') AND @dl('gd.so'));
}
return TRUE;