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async image loading from data, files and resources for ios

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Use the tns_safeDecodeImageNamedCompletion from the widgets framework

Add loadMode on Image with sync and async options for local images
This commit is contained in:
Nedyalko Nikolov
2016-04-15 09:04:02 +03:00
committed by Panayot Cankov
parent b8785afd74
commit 1b395aac7f
10 changed files with 266 additions and 108 deletions
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72
image-source/image-source.ios.ts
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@ -11,10 +11,30 @@ export class ImageSource implements definition.ImageSource {
public ios: UIImage;
public loadFromResource(name: string): boolean {
this.ios = UIImage.imageNamed(name) || UIImage.imageNamed(`${name}.jpg`);
this.ios = (<any>UIImage).tns_safeImageNamed(name) || (<any>UIImage).tns_safeImageNamed(`${name}.jpg`);
return this.ios != null;
}
public fromResource(name: string): Promise<boolean> {
return new Promise<boolean>((resolve, reject) => {
try {
(<any>UIImage).tns_safeDecodeImageNamedCompletion(name, image => {
if (image) {
this.ios = image;
resolve(true);
} else {
(<any>UIImage).tns_safeDecodeImageNamedCompletion(`${name}.jpg`, image => {
this.ios = image;
resolve(true);
});
}
});
} catch (ex) {
reject(ex);
}
});
}
public loadFromFile(path: string): boolean {
var fileName = types.isString(path) ? path.trim() : "";
@ -26,19 +46,67 @@ export class ImageSource implements definition.ImageSource {
return this.ios != null;
}
public fromFile(path: string): Promise<boolean> {
return new Promise<boolean>((resolve, reject) => {
try {
var fileName = types.isString(path) ? path.trim() : "";
if (fileName.indexOf("~/") === 0) {
fileName = fs.path.join(fs.knownFolders.currentApp().path, fileName.replace("~/", ""));
}
(<any>UIImage).tns_decodeImageWidthContentsOfFileCompletion(fileName, image => {
this.ios = image;
resolve(true);
});
} catch (ex) {
reject(ex);
}
});
}
public loadFromData(data: any): boolean {
this.ios = UIImage.imageWithData(data);
return this.ios != null;
}
public fromData(data: any): Promise<boolean> {
return new Promise<boolean>((resolve, reject) => {
try {
(<any>UIImage).tns_decodeImageWithDataCompletion(data, image => {
this.ios = image;
resolve(true);
});
} catch (ex) {
reject(ex);
}
});
}
public loadFromBase64(source: string): boolean {
if (types.isString(source)) {
var data = NSData.alloc().initWithBase64EncodedStringOptions(source, NSDataBase64DecodingOptions.NSDataBase64DecodingIgnoreUnknownCharacters);
this.ios = UIImage.imageWithData(data);
}
return this.ios != null;
}
public fromBase64(source: string): Promise<boolean> {
return new Promise<boolean>((resolve, reject) => {
try {
var data = NSData.alloc().initWithBase64EncodedStringOptions(source, NSDataBase64DecodingOptions.NSDataBase64DecodingIgnoreUnknownCharacters);
UIImage.imageWithData["async"](UIImage, [data]).then(image => {
this.ios = image;
resolve(true);
});
} catch (ex) {
reject(ex);
}
});
}
public setNativeSource(source: any): boolean {
this.ios = source;
return source != null;
@ -103,4 +171,4 @@ function getImageData(instance: UIImage, format: string, quality = 1.0): NSData
}
return data;
}
}