CCGraphics.m 11 KB

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  1. //
  2. // CCGraphics.m
  3. // Crypto Cloud Technology Nextcloud
  4. //
  5. // Created by Marino Faggiana on 04/02/16.
  6. // Copyright (c) 2014 TWS. All rights reserved.
  7. //
  8. // Author Marino Faggiana <m.faggiana@twsweb.it>
  9. //
  10. // This program is free software: you can redistribute it and/or modify
  11. // it under the terms of the GNU General Public License as published by
  12. // the Free Software Foundation, either version 3 of the License, or
  13. // (at your option) any later version.
  14. //
  15. // This program is distributed in the hope that it will be useful,
  16. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18. // GNU General Public License for more details.
  19. //
  20. // You should have received a copy of the GNU General Public License
  21. // along with this program. If not, see <http://www.gnu.org/licenses/>.
  22. //
  23. #import "CCGraphics.h"
  24. #import "AppDelegate.h"
  25. #import "CCUtility.h"
  26. #import "NSString+TruncateToWidth.h"
  27. @implementation CCGraphics
  28. + (UIImage *)thumbnailImageForVideo:(NSURL *)videoURL atTime:(NSTimeInterval)time
  29. {
  30. AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoURL options:nil];
  31. NSParameterAssert(asset);
  32. AVAssetImageGenerator *assetIG =
  33. [[AVAssetImageGenerator alloc] initWithAsset:asset];
  34. assetIG.appliesPreferredTrackTransform = YES;
  35. assetIG.apertureMode = AVAssetImageGeneratorApertureModeEncodedPixels;
  36. CGImageRef thumbnailImageRef = NULL;
  37. CFTimeInterval thumbnailImageTime = time;
  38. NSError *igError = nil;
  39. thumbnailImageRef =
  40. [assetIG copyCGImageAtTime:CMTimeMake(thumbnailImageTime, 60) actualTime:NULL error:&igError];
  41. if (!thumbnailImageRef) NSLog(@"[LOG] thumbnailImageGenerationError %@", igError );
  42. UIImage *thumbnailImage = thumbnailImageRef ? [[UIImage alloc] initWithCGImage:thumbnailImageRef] : nil;
  43. return thumbnailImage;
  44. }
  45. // mix two image
  46. + (UIImage *)overlayImage:(UIImage *)backgroundImage watermarkImage:(UIImage *)watermarkImage where:(NSString *)where
  47. {
  48. // example watermarkImage = [UIImage imageNamed:@"lock"];
  49. UIGraphicsBeginImageContext(backgroundImage.size);
  50. [backgroundImage drawInRect:CGRectMake(0, 0, backgroundImage.size.width, backgroundImage.size.height)];
  51. if ([where isEqualToString:@"right"]) [watermarkImage drawInRect:CGRectMake(backgroundImage.size.width - watermarkImage.size.width, backgroundImage.size.height - watermarkImage.size.height, watermarkImage.size.width, watermarkImage.size.height)];
  52. if ([where isEqualToString:@"left"]) [watermarkImage drawInRect:CGRectMake(0, backgroundImage.size.height - watermarkImage.size.height, backgroundImage.size.width - watermarkImage.size.width, backgroundImage.size.height - watermarkImage.size.height)];
  53. UIImage *result = UIGraphicsGetImageFromCurrentImageContext();
  54. UIGraphicsEndImageContext();
  55. return result;
  56. }
  57. + (UIImage *)generateImageFromVideo:(NSString *)videoPath
  58. {
  59. NSURL *url = [NSURL fileURLWithPath:videoPath];
  60. NSError *error = NULL;
  61. AVURLAsset* asset = [AVURLAsset URLAssetWithURL:url options:nil];
  62. AVAssetImageGenerator* imageGenerator = [AVAssetImageGenerator assetImageGeneratorWithAsset:asset];
  63. imageGenerator.appliesPreferredTrackTransform = YES;
  64. // CMTime time = CMTimeMake(1, 65);
  65. CGImageRef cgImage = [imageGenerator copyCGImageAtTime:CMTimeMake(0, 1) actualTime:nil error:&error];
  66. if(error) return nil;
  67. UIImage* image = [UIImage imageWithCGImage:cgImage];
  68. CGImageRelease(cgImage);
  69. return image;
  70. }
  71. + (UIImage *)scaleImage:(UIImage *)image toSize:(CGSize)targetSize
  72. {
  73. //If scaleFactor is not touched, no scaling will occur
  74. CGFloat scaleFactor = 1.0;
  75. //Deciding which factor to use to scale the image (factor = targetSize / imageSize)
  76. if (image.size.width > targetSize.width || image.size.height > targetSize.height)
  77. if (!((scaleFactor = (targetSize.width / image.size.width)) > (targetSize.height / image.size.height))) //scale to fit width, or
  78. scaleFactor = targetSize.height / image.size.height; // scale to fit heigth.
  79. UIGraphicsBeginImageContext(targetSize);
  80. //Creating the rect where the scaled image is drawn in
  81. CGRect rect = CGRectMake((targetSize.width - image.size.width * scaleFactor) / 2,
  82. (targetSize.height - image.size.height * scaleFactor) / 2,
  83. image.size.width * scaleFactor, image.size.height * scaleFactor);
  84. //Draw the image into the rect
  85. [image drawInRect:rect];
  86. //Saving the image, ending image context
  87. UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
  88. UIGraphicsEndImageContext();
  89. return scaledImage;
  90. }
  91. + (UIImage *)createNewImageFrom:(NSString *)fileName directoryUser:(NSString *)directoryUser fileNameTo:(NSString *)fileNameTo fileNamePrint:(NSString *)fileNamePrint size:(NSString *)size imageForUpload:(BOOL)imageForUpload typeFile:(NSString *)typeFile writePreview:(BOOL)writePreview optimizedFileName:(BOOL)optimizedFileName
  92. {
  93. UIImage *originalImage;
  94. UIImage *scaleImage;
  95. CGRect rect;
  96. CGFloat width, height;
  97. NSString *ext = [[fileNamePrint pathExtension] lowercaseString];
  98. if ([[directoryUser substringFromIndex: [directoryUser length] - 1] isEqualToString:@"/"]) directoryUser = [directoryUser substringToIndex:[directoryUser length]-1];
  99. if (![[NSFileManager defaultManager] fileExistsAtPath:[NSString stringWithFormat:@"%@/%@", directoryUser, fileName]]) return nil;
  100. // only viedo / image
  101. if (![typeFile isEqualToString: k_metadataTypeFile_image] && ![typeFile isEqualToString: k_metadataTypeFile_video]) return nil;
  102. if ([typeFile isEqualToString: k_metadataTypeFile_image]) {
  103. originalImage = [UIImage imageWithContentsOfFile:[NSString stringWithFormat:@"%@/%@", directoryUser, fileName]];
  104. }
  105. if ([typeFile isEqualToString: k_metadataTypeFile_video]) {
  106. // create symbolik link for read video file in temp
  107. [[NSFileManager defaultManager] removeItemAtPath:[NSTemporaryDirectory() stringByAppendingString:@"tempvideo.mp4"] error:nil];
  108. [[NSFileManager defaultManager] linkItemAtPath:[NSString stringWithFormat:@"%@/%@", directoryUser, fileName] toPath:[NSTemporaryDirectory() stringByAppendingString:@"tempvideo.mp4"] error:nil];
  109. originalImage = [self generateImageFromVideo:[NSTemporaryDirectory() stringByAppendingString:@"tempvideo.mp4"]];
  110. }
  111. if ([size isEqualToString:@"xs"]) scaleImage = [self scaleImage:originalImage toSize:CGSizeMake(32, 32)];
  112. if ([size isEqualToString:@"s"]) scaleImage = [self scaleImage:originalImage toSize:CGSizeMake(64, 64)];
  113. if ([size isEqualToString:@"m"]) scaleImage = [self scaleImage:originalImage toSize:CGSizeMake(128, 128)];
  114. if ([size isEqualToString:@"l"]) scaleImage = [self scaleImage:originalImage toSize:CGSizeMake(640, 640)];
  115. if ([size isEqualToString:@"xl"]) scaleImage = [self scaleImage:originalImage toSize:CGSizeMake(1024, 1024)];
  116. scaleImage = [UIImage imageWithData:UIImageJPEGRepresentation(scaleImage, 0.5f)];
  117. // it is request write photo preview ?
  118. if (writePreview && scaleImage) {
  119. if (imageForUpload) {
  120. // write image preview in tmp for plist
  121. [self saveIcoWithFileID:fileNameTo image:scaleImage writeToFile:[NSTemporaryDirectory() stringByAppendingString:fileNameTo] copy:NO move:NO fromPath:nil toPath:nil];
  122. // if it is preview for Upload then trasform it in gray scale
  123. //TODO: Crash with swift
  124. scaleImage = [scaleImage grayscale];
  125. [self saveIcoWithFileID:fileNameTo image:scaleImage writeToFile:[NSString stringWithFormat:@"%@/%@.ico", directoryUser, fileNameTo] copy:NO move:NO fromPath:nil toPath:nil];
  126. } else {
  127. [self saveIcoWithFileID:fileNameTo image:scaleImage writeToFile:[NSString stringWithFormat:@"%@/%@.ico", directoryUser, fileNameTo] copy:NO move:NO fromPath:nil toPath:nil];
  128. }
  129. }
  130. // Optimized photos resolution
  131. // Resize image 640 x 480 ( with proportion : 1,333)
  132. if (originalImage.size.height < originalImage.size.width) {
  133. // (lanscape)
  134. width = 640;
  135. height = 480;
  136. } else {
  137. // (portrait)
  138. height = 640;
  139. width = 480;
  140. }
  141. // Optimized photos resolution
  142. if ([typeFile isEqualToString: k_metadataTypeFile_image] && [ext isEqualToString:@"gif"] == NO && optimizedFileName && scaleImage && (originalImage.size.width > width || originalImage.size.height > height)) {
  143. // conversion scale proportion
  144. if (height > width) {
  145. float proportion = originalImage.size.height / originalImage.size.width;
  146. width = height / proportion;
  147. } else {
  148. float proportion = originalImage.size.width / originalImage.size.height;
  149. height = width / proportion;
  150. }
  151. rect = CGRectMake(0,0,width,height);
  152. UIGraphicsBeginImageContext(rect.size);
  153. [originalImage drawInRect:rect];
  154. UIImage *resizeImage = UIGraphicsGetImageFromCurrentImageContext();
  155. UIGraphicsEndImageContext();
  156. resizeImage = [UIImage imageWithData:UIImageJPEGRepresentation(resizeImage, 0.5f)];
  157. if (resizeImage) [UIImagePNGRepresentation(resizeImage) writeToFile:[NSString stringWithFormat:@"%@/%@", directoryUser, fileNameTo] atomically: YES];
  158. }
  159. return scaleImage;
  160. }
  161. + (void)saveIcoWithFileID:(NSString *)fileID image:(UIImage *)image writeToFile:(NSString *)writeToFile copy:(BOOL)copy move:(BOOL)move fromPath:(NSString *)fromPath toPath:(NSString *)toPath
  162. {
  163. if (writeToFile)
  164. [UIImagePNGRepresentation(image) writeToFile:writeToFile atomically: YES];
  165. if (copy)
  166. [CCUtility copyFileAtPath:fromPath toPath:toPath];
  167. if (move)
  168. [[NSFileManager defaultManager] moveItemAtPath:fromPath toPath:toPath error:nil];
  169. #ifndef EXTENSION
  170. if (image && fileID)
  171. [app.icoImagesCache setObject:image forKey:fileID];
  172. #endif
  173. }
  174. + (UIView *)navigationBarTitle:(NSString *)title image:(UIImage *)image frame:(CGRect)frame
  175. {
  176. UIView *view = [UIView new];
  177. UILabel *label = [UILabel new];
  178. title = [@" " stringByAppendingString:title];
  179. NSInteger width = floor(frame.size.width/3);
  180. if (width < 80)
  181. width = 80;
  182. label.text = [title stringByTruncatingToWidth:width withFont:label.font atEnd:YES];
  183. label.textAlignment = NSTextAlignmentCenter;
  184. [label sizeToFit];
  185. label.center = view.center;
  186. UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
  187. float imageAspect = imageView.image.size.width / imageView.image.size.height;
  188. imageView.frame = CGRectMake(label.frame.origin.x-label.frame.size.height*imageAspect, label.frame.origin.y, label.frame.size.height*imageAspect, label.frame.size.height);
  189. imageView.contentMode = UIViewContentModeScaleAspectFit;
  190. [view addSubview:label];
  191. [view addSubview:imageView];
  192. [view sizeToFit];
  193. return view;
  194. }
  195. @end