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improve image api & update version code

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nyne
2024-11-05 13:13:32 +08:00
parent 07f8f2a4af
commit b49e528ff4
9 changed files with 231 additions and 107 deletions
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134
lib/utils/image.dart
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@@ -1,3 +1,4 @@
import 'dart:ffi';
import 'dart:isolate';
import 'dart:typed_data';
import 'dart:ui' as ui;
@@ -12,7 +13,12 @@ class Image {
final int height;
Image(this._data, this.width, this.height);
Image(this._data, this.width, this.height) {
if (_data.length != width * height) {
throw ArgumentError(
'Invalid argument: data length must be equal to width * height.');
}
}
Image.empty(this.width, this.height) : _data = Uint32List(width * height);
@@ -25,7 +31,7 @@ class Image {
throw Exception('Failed to decode image');
}
var image = Image(
Uint32List.fromList(info.buffer.asUint32List()),
info.buffer.asUint32List(),
frame.image.width,
frame.image.height,
);
@@ -34,6 +40,20 @@ class Image {
}
Image copyRange(int x, int y, int width, int height) {
if (width + x > this.width) {
throw ArgumentError('''
Invalid argument: x + width must be less than or equal to the image width.
x: $x, width: $width, image width: ${this.width}
'''
.trim());
}
if (height + y > this.height) {
throw ArgumentError('''
Invalid argument: y + height must be less than or equal to the image height.
y: $y, height: $height, image height: ${this.height}
'''
.trim());
}
var data = Uint32List(width * height);
for (var j = 0; j < height; j++) {
for (var i = 0; i < width; i++) {
@@ -44,6 +64,20 @@ class Image {
}
void fillImageAt(int x, int y, Image image) {
if (x + image.width > width) {
throw ArgumentError('''
Invalid argument: x + image width must be less than or equal to the image width.
x: $x, image width: ${image.width}, image width: $width
'''
.trim());
}
if (y + image.height > height) {
throw ArgumentError('''
Invalid argument: y + image height must be less than or equal to the image height.
y: $y, image height: ${image.height}, image height: $height
'''
.trim());
}
for (var j = 0; j < image.height && (j + y) < height; j++) {
for (var i = 0; i < image.width && (i + x) < width; i++) {
_data[(j + y) * width + i + x] = image._data[j * image.width + i];
@@ -51,6 +85,44 @@ class Image {
}
}
void fillImageRangeAt(
int x, int y, Image image, int srcX, int srcY, int width, int height) {
if (x + width > this.width) {
throw ArgumentError('''
Invalid argument: x + width must be less than or equal to the image width.
x: $x, width: $width, image width: ${this.width}
'''
.trim());
}
if (y + height > this.height) {
throw ArgumentError('''
Invalid argument: y + height must be less than or equal to the image height.
y: $y, height: $height, image height: ${this.height}
'''
.trim());
}
if (srcX + width > image.width) {
throw ArgumentError('''
Invalid argument: srcX + width must be less than or equal to the image width.
srcX: $srcX, width: $width, image width: ${image.width}
'''
.trim());
}
if (srcY + height > image.height) {
throw ArgumentError('''
Invalid argument: srcY + height must be less than or equal to the image height.
srcY: $srcY, height: $height, image height: ${image.height}
'''
.trim());
}
for (var j = 0; j < height; j++) {
for (var i = 0; i < width; i++) {
_data[(j + y) * this.width + i + x] =
image._data[(j + srcY) * image.width + i + srcX];
}
}
}
Image copyAndRotate90() {
var data = Uint32List(width * height);
for (var j = 0; j < height; j++) {
@@ -62,28 +134,37 @@ class Image {
}
Color getPixel(int x, int y) {
if (x < 0 || x >= width) {
throw ArgumentError(
'Invalid argument: x must be in the range of [0, $width).');
}
if (y < 0 || y >= height) {
throw ArgumentError(
'Invalid argument: y must be in the range of [0, $height).');
}
return Color.fromValue(_data[y * width + x]);
}
void setPixel(int x, int y, Color color) {
if (x < 0 || x >= width) {
throw ArgumentError(
'Invalid argument: x must be in the range of [0, $width).');
}
if (y < 0 || y >= height) {
throw ArgumentError(
'Invalid argument: y must be in the range of [0, $height).');
}
_data[y * width + x] = color.value;
}
Image subImage(int x, int y, int width, int height) {
var data = Uint32List.sublistView(
_data,
y * this.width + x,
width * height,
);
return Image(data, width, height);
}
Uint8List encodePng() {
return lodepng.encodePng(lodepng.Image(
var data = lodepng.encodePngToPointer(lodepng.Image(
_data.buffer.asUint8List(),
width,
height,
));
return Pointer<Uint8>.fromAddress(data.address).asTypedList(data.length,
finalizer: lodepng.ByteBuffer.finalizer);
}
}
@@ -166,16 +247,21 @@ class JsEngine {
if (image2 == null) return null;
image.fillImageAt(x, y, image2);
return null;
case 'subImage':
case 'fillImageRangeAt':
var key = message['key'];
var image = images[key];
if (image == null) return null;
var x = message['x'];
var y = message['y'];
var key2 = message['image'];
var image2 = images[key2];
if (image2 == null) return null;
var srcX = message['srcX'];
var srcY = message['srcY'];
var width = message['width'];
var height = message['height'];
var newImage = image.subImage(x, y, width, height);
return setImage(newImage);
image.fillImageRangeAt(x, y, image2, srcX, srcY, width, height);
return null;
case 'getWidth':
var key = message['key'];
var image = images[key];
@@ -213,16 +299,18 @@ Future<Uint8List> modifyImageWithScript(Uint8List data, String script) async {
jsEngine.runCode(script);
var key = jsEngine.setImage(image);
var res = jsEngine.runCode('''
let image = new Image($key);
let result = modifyImage(image);
return result.key;
''');
let func = () => {
let image = new Image($key);
let result = modifyImage(image);
return result.key;
}
func();
''');
var newImage = jsEngine.images[res];
var data = newImage!.encodePng();
return data;
return Uint8List.fromList(data);
});
}
finally {
} finally {
_tasksCount--;
}
}
}