PHP class for image scaling watermarks

PHP class for image scaling watermarks

/** * Image scaling watermark * */ Class cls_photo { Protected $ waterrate = 0.2; // ratio of the watermark icon to the image Protected $ width = 300; // Default width of the thumbnail Protected $ height = 200; // default height of the thumbnail Protected $ padding = 5; // distance from the watermark image to the edge Protected $ water_mark = "./water.png "; Protected $ water_mark_pos = 5; // watermark image position (1 = upper left corner, 2 = upper right corner, 3 = lower left corner, 4 = lower right corner, 5 Center) Protected $ watermode = 0; // when the thumbnail is 0, no watermark is made. when the thumbnail is 1, the watermark is made. Protected $ magick_handle; // Image operation handle Protected $ format = array ('jpg ', 'GIF', 'PNG', 'jpeg '); // The format of the image file is limited. Protected $ smallpic_mode = 2; // Default mode 0: No thumbnail is generated, 1 is cropping and scaling, 2 is proportional scaling, and 3 is scaling and filling. /** * Set image parameters * * @ Param $ arg the image parameters can be put into the array multiple times as follows: * @ Param $ protected parameter value * Array ( * 'Waterrate' = & gt; 0.2, * 'Water _ mark' => './water.png ', * 'Water _ mark_pos '=> 4, * 'Smallpic _ mode' => 1 *); * @ Return ture/false */ Public function set_args ($ arg, $ val = "") { $ Params = array ('waterrate', 'Water _ mark', 'Water _ mark_pos ', 'smallpic _ mode', 'watermode', 'width', 'height '); If (is_array ($ arg )) { Foreach ($ arg as $ k => $ v) { If (in_array ($ k, $ params )) { $ This-> $ k = $ v; } } } Else { If (empty ($ val )) { Return false; } Else { If (in_array ($ arg, $ params )) { $ This-> $ arg = $ val; } } } Return true; } /** * Image scaling * * @ Param $ src_file source file path * @ Param $ dst_file path of the target file * @ Return the thumbnail path/false */ Public function scale ($ src_file, $ dst_file = "") { $ Dst_width = $ this-> width; $ Dst_height = $ this-> height; $ Mode = $ this-> smallpic_mode; $ Magic_water_handle = NewMagickWand (); If (! MagickReadImage ($ magic_water_handle, $ src_file) return false; // Type $ Srcext = strtolower (MagickGetImageFormat ($ magic_water_handle )); If ($ srcext = 'bmp ') { $ Srcext = 'jpeg '; } If (! In_array ($ srcext, $ this-> format) return false; // Size $ Src_width = MagickGetImageWidth ($ magic_water_handle ); $ Src_height = MagickGetImageHeight ($ magic_water_handle ); // Cropping and scaling mode If ($ mode = 1) { $ Pos_x = $ pos_y = 0; // crop the temporary position $ Src_widthc = $ src_width; // crop the temporary width. $ Src_heightc = $ src_height; // crop the temporary height. If ($ src_width/$ src_height> $ dst_width/$ dst_height) { $ Src_widthc = $ src_height * $ dst_width/$ dst_height; $ Pos_x = ($ src_width-$ src_widthc)/2; } Else { $ Src_heightc = $ src_width * $ dst_height/$ dst_width; $ Pos_y = ($ src_height-$ src_heightc)/2; } MagickCropImage ($ magic_water_handle, $ src_widthc, $ src_heightc, $ pos_x, $ pos_y); // cropping // Because after the MagickCropImage function, the Gif image is changed, but the canvas remains unchanged. $ This-> magick_handle = NewMagickWand (); MagickNewImage ($ this-> magick_handle, $ src_widthc, $ src_heightc, '# ffff '); MagickSetFormat ($ this-> magick_handle, $ srcext ); MagickCompositeImage ($ this-> magick_handle, $ magic_water_handle, MW_OverCompositeOp, 0, 0 ); // Zoom MagickScaleImage ($ this-> magick_handle, $ dst_width, $ dst_height ); } // Proportional scaling mode If ($ mode = 2) { If ($ src_width/$ src_height> $ dst_width/$ dst_height) { $ Dst_height = $ dst_width * $ src_height/$ src_width; } Else { $ Dst_width = $ dst_height * $ src_width/$ src_height; } $ This-> magick_handle = $ magic_water_handle; // replace MagickScaleImage ($ this-> magick_handle, $ dst_width, $ dst_height); // zoom } // Scaling and filling mode If ($ mode = 3) { If ($ src_width/$ src_height> $ dst_width/$ dst_height) { $ Dst_heightc = $ dst_width * $ src_height/$ src_width; $ Dst_widthc = $ dst_width; } Else { $ Dst_widthc = $ dst_height * $ src_width/$ src_height; $ Dst_heightc = $ dst_height; } MagickScaleImage ($ magic_water_handle, $ dst_widthc, $ dst_heightc); // zoom $ This-> magick_handle = NewMagickWand (); MagickNewImage ($ this-> magick_handle, $ dst_width, $ dst_height, $ this-> smallpic_bgcolor ); MagickSetFormat ($ this-> magick_handle, $ srcext ); MagickCompositeImage ($ this-> magick_handle, $ magic_water_handle, handle, ($ dst_width-$ dst_widthc)/2, ($ dst_height-$ dst_heightc)/2 ); } // Watermark If ($ this-> watermode = 1) { $ This-> set_mark (); } If (empty ($ dst_file )) { // Create a temporary file $ Dst_file = tempnam ($ _ SERVER ["SINASRV_CACHE_DIR"], "TMP_IMG "); } MagickWriteImage ($ this-> magick_handle, $ dst_file ); Return $ dst_file; } /** * Watermark * * @ Param $ src_file: Path of the image to be watermark * @ Param $ dst_file: specifies the path for saving the watermark file. if it is null, a random temporary file is generated. * @ Return watermark file path/false */ Public function water_mark ($ src_file, $ dst_file = "") { $ This-> magick_handle = NewMagickWand (); If (! MagickReadImage ($ this-> magick_handle, $ src_file )) Return false; $ This-> set_mark (); If (empty ($ dst_file )) { // Create a temporary file $ Dst_file = tempnam ($ _ SERVER ["SINASRV_CACHE_DIR"], "TMP_IMG "); } MagickWriteImage ($ this-> magick_handle, $ dst_file ); Return $ dst_file; } /** * Internal interface * Watermarking an image * */ Protected function set_mark () { // Size $ Dst_width = MagickGetImageWidth ($ this-> magick_handle ); $ Dst_height = MagickGetImageHeight ($ this-> magick_handle ); // Process the watermark image If ($ this-> water_mark & is_file ($ this-> water_mark )) { $ Magic_water_handle = NewMagickWand (); MagickRemoveImage ($ magic_water_handle ); If (MagickReadImage ($ magic_water_handle, $ this-> water_mark )) { MagickScaleImage ($ resize, $ dst_width * $ this-> waterrate, $ dst_width * $ this-> waterrate * MagickGetImageHeight ($ resize)/MagickGetImageWidth ($ magic_water_handle )); // scale the watermark to 1/5 of the image If ($ this-> water_mark_pos = 1) { $ Left = $ this-> padding; $ Top = $ this-> padding; } Elseif ($ this-> water_mark_pos = 2) { $ Left = $ dst_width-$ this-> padding-MagickGetImageWidth ($ magic_water_handle ); $ Top = $ this-> padding; } Elseif ($ this-> water_mark_pos = 3) { $ Left = $ this-> padding; $ Top = $ dst_height-$ this-> padding-MagickGetImageHeight ($ magic_water_handle ); } Elseif ($ this-> water_mark_pos = 4) { $ Left = $ dst_width-$ this-> padding-MagickGetImageWidth ($ magic_water_handle ); $ Top = $ dst_height-$ this-> padding-MagickGetImageHeight ($ magic_water_handle ); } Elseif ($ this-> water_mark_pos = 5) { $ Left = ($ dst_width-MagickGetImageWidth ($ magic_water_handle)/2; $ Top = ($ dst_height-MagickGetImageHeight ($ magic_water_handle)/2; } MagickCompositeImage ($ this-> magick_handle, $ magic_water_handle, MW_OverCompositeOp, $ left, $ top ); } } } }

PHP