/
image-source.ios.ts
417 lines (322 loc) · 12.9 KB
/
image-source.ios.ts
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
// Definitions.
import { ImageSource as ImageSourceDefinition } from ".";
import { ImageAsset } from "../image-asset";
import * as httpModule from "../http";
import { Font } from "../ui/styling/font";
import { Color } from "../color";
// Types.
import { path as fsPath, knownFolders } from "../file-system";
import { isFileOrResourcePath, RESOURCE_PREFIX, layout } from "../utils/utils";
export { isFileOrResourcePath };
let http: typeof httpModule;
function ensureHttp() {
if (!http) {
http = require("../http");
}
}
export class ImageSource implements ImageSourceDefinition {
public android: android.graphics.Bitmap;
public ios: UIImage;
get height(): number {
if (this.ios) {
return this.ios.size.height;
}
return NaN;
}
get width(): number {
if (this.ios) {
return this.ios.size.width;
}
return NaN;
}
get rotationAngle(): number {
return NaN;
}
set rotationAngle(_value: number) {
// compatibility with Android
}
constructor(nativeSource?: any) {
if (nativeSource) {
this.setNativeSource(nativeSource);
}
}
static fromAsset(asset: ImageAsset): Promise<ImageSource> {
return new Promise<ImageSource>((resolve, reject) => {
asset.getImageAsync((image, err) => {
if (image) {
resolve(new ImageSource(image));
} else {
reject(err);
}
});
});
}
static fromUrl(url: string): Promise<ImageSource> {
ensureHttp();
return http.getImage(url);
}
static fromResourceSync(name: string): ImageSource {
const nativeSource = (<any>UIImage).tns_safeImageNamed(name) || (<any>UIImage).tns_safeImageNamed(`${name}.jpg`);
return nativeSource ? new ImageSource(nativeSource) : null;
}
static fromResource(name: string): Promise<ImageSource> {
return new Promise<ImageSource>((resolve, reject) => {
try {
(<any>UIImage).tns_safeDecodeImageNamedCompletion(name, image => {
if (image) {
resolve(new ImageSource(image));
} else {
(<any>UIImage).tns_safeDecodeImageNamedCompletion(`${name}.jpg`, image => {
resolve(new ImageSource(image));
});
}
});
} catch (ex) {
reject(ex);
}
});
}
static fromFileSync(path: string): ImageSource {
const uiImage = UIImage.imageWithContentsOfFile(getFileName(path));
return uiImage ? new ImageSource(uiImage) : null;
}
static fromFile(path: string): Promise<ImageSource> {
return new Promise<ImageSource>((resolve, reject) => {
try {
(<any>UIImage).tns_decodeImageWidthContentsOfFileCompletion(getFileName(path),
uiImage => {
resolve(new ImageSource(uiImage));
});
} catch (ex) {
reject(ex);
}
});
}
static fromFileOrResourceSync(path: string): ImageSource {
if (!isFileOrResourcePath(path)) {
throw new Error("Path \"" + "\" is not a valid file or resource.");
}
if (path.indexOf(RESOURCE_PREFIX) === 0) {
return ImageSource.fromResourceSync(path.substr(RESOURCE_PREFIX.length));
}
return ImageSource.fromFileSync(path);
}
static fromDataSync(data: any): ImageSource {
const uiImage = UIImage.imageWithData(data);
return uiImage ? new ImageSource(uiImage) : null;
}
static fromData(data: any): Promise<ImageSource> {
return new Promise<ImageSource>((resolve, reject) => {
try {
(<any>UIImage).tns_decodeImageWithDataCompletion(data,
uiImage => {
resolve(new ImageSource(uiImage));
});
} catch (ex) {
reject(ex);
}
});
}
static fromBase64Sync(source: string): ImageSource {
let uiImage: UIImage;
if (typeof source === "string") {
const data = NSData.alloc().initWithBase64EncodedStringOptions(source, NSDataBase64DecodingOptions.IgnoreUnknownCharacters);
uiImage = UIImage.imageWithData(data);
}
return uiImage ? new ImageSource(uiImage) : null;
}
static fromBase64(source: string): Promise<ImageSource> {
return new Promise<ImageSource>((resolve, reject) => {
try {
const data = NSData.alloc().initWithBase64EncodedStringOptions(source, NSDataBase64DecodingOptions.IgnoreUnknownCharacters);
UIImage.imageWithData["async"](UIImage, [data]).then(
uiImage => {
resolve(new ImageSource(uiImage));
});
} catch (ex) {
reject(ex);
}
});
}
static fromFontIconCodeSync(source: string, font: Font, color: Color): ImageSource {
font = font || Font.default;
let fontSize = layout.toDevicePixels(font.fontSize);
if (!fontSize) {
// TODO: Consider making 36 font size as default for optimal look on TabView and ActionBar
fontSize = UIFont.labelFontSize;
}
const density = layout.getDisplayDensity();
const scaledFontSize = fontSize * density;
const attributes = {
[NSFontAttributeName]: font.getUIFont(UIFont.systemFontOfSize(scaledFontSize))
};
if (color) {
attributes[NSForegroundColorAttributeName] = color.ios;
}
const attributedString = NSAttributedString.alloc().initWithStringAttributes(source, <NSDictionary<string, any>>attributes);
UIGraphicsBeginImageContextWithOptions(attributedString.size(), false, 0.0);
attributedString.drawAtPoint(CGPointMake(0, 0));
const iconImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return iconImage ? new ImageSource(iconImage) : null;
}
public fromAsset(asset: ImageAsset) {
console.log("fromAsset() is deprecated. Use ImageSource.fromAsset() instead.");
return ImageSource.fromAsset(asset)
.then(imgSource => {
this.setNativeSource(imgSource.ios);
return this;
});
}
public loadFromResource(name: string): boolean {
console.log("loadFromResource() is deprecated. Use ImageSource.fromResourceSync() instead.");
const imgSource = ImageSource.fromResourceSync(name);
this.ios = imgSource ? imgSource.ios : null;
return !!this.ios;
}
public fromResource(name: string): Promise<boolean> {
console.log("fromResource() is deprecated. Use ImageSource.fromResource() instead.");
return ImageSource.fromResource(name)
.then(imgSource => {
this.ios = imgSource.ios;
return !!this.ios;
});
}
public loadFromFile(path: string): boolean {
console.log("loadFromFile() is deprecated. Use ImageSource.fromFileSync() instead.");
const imgSource = ImageSource.fromFileSync(path);
this.ios = imgSource ? imgSource.ios : null;
return !!this.ios;
}
public fromFile(path: string): Promise<boolean> {
console.log("fromFile() is deprecated. Use ImageSource.fromFile() instead.");
return ImageSource.fromFile(path)
.then(imgSource => {
this.ios = imgSource.ios;
return !!this.ios;
});
}
public loadFromData(data: any): boolean {
console.log("loadFromData() is deprecated. Use ImageSource.fromDataSync() instead.");
const imgSource = ImageSource.fromDataSync(data);
this.ios = imgSource ? imgSource.ios : null;
return !!this.ios;
}
public fromData(data: any): Promise<boolean> {
console.log("fromData() is deprecated. Use ImageSource.fromData() instead.");
return ImageSource.fromData(data)
.then(imgSource => {
this.ios = imgSource.ios;
return !!this.ios;
});
}
public loadFromBase64(source: string): boolean {
console.log("loadFromBase64() is deprecated. Use ImageSource.fromBase64Sync() instead.");
const imgSource = ImageSource.fromBase64Sync(source);
this.ios = imgSource ? imgSource.ios : null;
return !!this.ios;
}
public fromBase64(source: string): Promise<boolean> {
console.log("fromBase64() is deprecated. Use ImageSource.fromBase64() instead.");
return ImageSource.fromBase64(source)
.then(imgSource => {
this.ios = imgSource.ios;
return !!this.ios;
});
}
public loadFromFontIconCode(source: string, font: Font, color: Color): boolean {
console.log("loadFromFontIconCode() is deprecated. Use ImageSource.fromFontIconCodeSync() instead.");
const imgSource = ImageSource.fromFontIconCodeSync(source, font, color);
this.ios = imgSource ? imgSource.ios : null;
return !!this.ios;
}
public setNativeSource(source: any): void {
if (source && !(source instanceof UIImage)) {
throw new Error("The method setNativeSource() expects UIImage instance.");
}
this.ios = source;
}
public saveToFile(path: string, format: "png" | "jpeg" | "jpg", quality?: number): boolean {
if (!this.ios) {
return false;
}
if (quality) {
quality = (quality - 0) / (100 - 0); // Normalize quality on a scale of 0 to 1
}
const data = getImageData(this.ios, format, quality);
if (data) {
return NSFileManager.defaultManager.createFileAtPathContentsAttributes(path, data, null);
}
return false;
}
public toBase64String(format: "png" | "jpeg" | "jpg", quality?: number): string {
let res = null;
if (!this.ios) {
return res;
}
if (quality) {
quality = (quality - 0) / (100 - 0); // Normalize quality on a scale of 0 to 1
}
const data = getImageData(this.ios, format, quality);
if (data) {
res = data.base64Encoding();
}
return res;
}
}
function getFileName(path: string): string {
let fileName = typeof path === "string" ? path.trim() : "";
if (fileName.indexOf("~/") === 0) {
fileName = fsPath.join(knownFolders.currentApp().path, fileName.replace("~/", ""));
}
return fileName;
}
function getImageData(instance: UIImage, format: "png" | "jpeg" | "jpg", quality = 0.9): NSData {
let data = null;
switch (format) {
case "png":
data = UIImagePNGRepresentation(instance);
break;
case "jpeg":
case "jpg":
data = UIImageJPEGRepresentation(instance, quality);
break;
}
return data;
}
export function fromAsset(asset: ImageAsset): Promise<ImageSource> {
console.log("fromAsset() is deprecated. Use ImageSource.fromAsset() instead.");
return ImageSource.fromAsset(asset);
}
export function fromResource(name: string): ImageSource {
console.log("fromResource() is deprecated. Use ImageSource.fromResourceSync() instead.");
return ImageSource.fromResourceSync(name);
}
export function fromFile(path: string): ImageSource {
console.log("fromFile() is deprecated. Use ImageSource.fromFileSync() instead.");
return ImageSource.fromFileSync(path);
}
export function fromData(data: any): ImageSource {
console.log("fromData() is deprecated. Use ImageSource.fromDataSync() instead.");
return ImageSource.fromDataSync(data);
}
export function fromFontIconCode(source: string, font: Font, color: Color): ImageSource {
console.log("fromFontIconCode() is deprecated. Use ImageSource.fromFontIconCodeSync() instead.");
return ImageSource.fromFontIconCodeSync(source, font, color);
}
export function fromBase64(source: string): ImageSource {
console.log("fromBase64() is deprecated. Use ImageSource.fromBase64Sync() instead.");
return ImageSource.fromBase64Sync(source);
}
export function fromNativeSource(nativeSource: any): ImageSource {
console.log("fromNativeSource() is deprecated. Use ImageSource constructor instead.");
return new ImageSource(nativeSource);
}
export function fromUrl(url: string): Promise<ImageSourceDefinition> {
console.log("fromUrl() is deprecated. Use ImageSource.fromUrl() instead.");
return ImageSource.fromUrl(url);
}
export function fromFileOrResource(path: string): ImageSource {
console.log("fromFileOrResource() is deprecated. Use ImageSource.fromFileOrResourceSync() instead.");
return ImageSource.fromFileOrResourceSync(path);
}