# image 1.1.2 Provides server and web apps the ability to load, manipulate, and save various image file formats. *previously called dart_image* ## Installing ``` export PUB_HOSTED_URL=https://pub.mirror.p-hatan.ir flutter pub add 'image:1.1.2' ``` Published: 2014-01-12T17:28:39.638850Z Expected archive SHA-256: 3b7e6af342d04a37ce01d4a8b4f2c6761299f4929755ab3a3ea99848fcc2bcb0 Available in cache; verification: upstream_checksum ## Direct dependencies - archive: >=1.0.6 - xml: any ## Package README (untrusted upstream documentation) # image [![Build Status](https://drone.io/bitbucket.org/brendan_duncan/image/status.png)](https://drone.io/bitbucket.org/brendan_duncan/image/latest) ##Overview A Dart library to encode and decode various image formats. The library has no reliance on `dart:io`, so it can be used for both server and web applications. The image library currently supports the following formats: - PNG - JPG - TGA ##Samples Load a jpeg, resize it, and save it as a png: import 'dart:io' as Io; import 'package:image/image.dart'; void main() { // Read a jpeg image from file. Image image = readJpg(new Io.File('res/cat-eye04.jpg').readAsBytesSync()); // Resize the image to a 120x? thumbnail (maintaining the aspect ratio). Image thumbnail = copyResize(image, 120); // Save the thumbnail as a PNG. new Io.File('out/thumbnail-cat-eye04.png') ..createSync(recursive: true) ..writeAsBytesSync(writePng(thumbnail)); } Create an image, draw some text, save it as a png: import 'dart:io' as Io; import 'package:image/image.dart'; void main() { // Create an image Image image = new Image(320, 240); // Fill it with a solid color (blue) fill(image, getColor(0, 0, 255)); // Draw some text using 24pt arial font drawString(image, arial_24, 0, 0, 'Hello World'); // Draw a line drawLine(image, 0, 0, 320, 240, getColor(255, 0, 0), thickness: 3); // Blur the image gaussianBlur(image, 10); // Generate a PNG List png = writePng(image); // Save it to disk new Io.File('out/test.png') ..createSync(recursive: true) ..writeAsBytesSync(png); } ##Image Functions - Image **brightness**(Image src, int brightness); _Adjust the brightness of the image._ - Image **bumpToNormal**(Image src, {double strength: 2.0}); _Generate a normal map from a heightfield bump image._ - Image **colorOffset**(Image src, int red, int green, int blue, int alpha); _Apply an offset to the colors of the image._ - Image **contrast**(Image src, num contrast); _Apply the Contrast convolution filter to the image._ - Image **convolution**(Image src, List filter, num filterDiv, num offset); _Apply a convolution filter to the image._ - Image **copyCrop**(Image src, int x, int y, int w, int h); _Create a cropped copy of the image._ - Image **copyInto**(Image dst, Image src, [int dst_x, int dst_y, int src_x, int src_y, int dst_w, int dst_h, int src_w, int src_h]); _Copy an area of the src image into dst._ - Image **copyResize**(Image src, int width, [int height = -1, int interpolation = LINEAR]); _Create a resized copy of the image._ - Image copyRotate(Image src, num angle, {int interpolation: LINEAR}) { _Returns a copy of the [src] image, rotated by [angle] degrees._ - Image **drawChar**(Image image, BitmapFont font, int x, int y, String string, {int color: 0xffffffff}); _Draw a single character with the given font._ - Image **drawCircle**(Image image, int x0, int y0, int radius, int color); _Draw a circle._ - Image **drawLine**(Image image, int x1, int y1, int x2, int y2, int color, {bool antialias: false, num thickness: 1}); _Draw a line._ - Image **drawNoise**(Image image, double sigma, {int type: NOISE_GAUSSIAN, Math.Random random}); _Add random noise to pixel values._ - Image **drawPixel**(Image image, int x, int y, int color, [int opacity = 0xff]); _Draw a single pixel into the image, applying alpha and opacity blending._ - Image **drawString**(Image image, BitmapFont font, int x, int y, String string, {int color: 0xffffffff}); _Draw the string with the given font._ - Image **dropShadow**(Image src, int hshadow, int vshadow, int blur, {int shadowColor: 0x000000a0}); _Create a drop-shadow effect._ - Image **emboss**(Image src); _Apply the Emboss convolution filter._ - Image **fill**(Image image, int color); _Fill the image with the given color._ - Image **fillRect**(Image src, int x1, int y1, int x2, int y2, int color); _Fill a rectangle with the given color._ - Image **flip**(Image src, int mode); _Flip the image with FLIP_HORIZONTAL, FLIP_VERTICAL, or FLIP_BOTH._ - Image **gaussianBlur**(Image src, int radius); _Blur the image._ - Image **grayscale**(Image src); _Convert the colors of the image to grayscale._ - Image **invert**(Image src); _Inver the colors of the image._ - Image **normalize**(Image src, int minValue, int maxValue); _Linearly normalize the pixel values of the image._ - Image **pixelate**(Image src, int blockSize, {int mode: PIXELATE_UPPERLEFT}); _Pixelate the image._ - BitmapFont **readFontZip**(List bytes); _Load a BitmapFont from a zip file._ - BitmapFont **readFont**(String fnt, Image page); _Load a BitmapFont from a font file and image._ - Image **readJpg**(List bytes); _Load an Image from JPG formatted data._ - Image **readPng**(List bytes); _Load an Image from PNG formatted data._ - Image **readTga**(List bytes); _Load an Image from TGA formatted data._ - Image **remapColors**(Image src, {int red: RED, int green: GREEN, int blue: BLUE, int alpha: ALPHA}); _Remap the color channels of an image._ - Image **smooth**(Image src, num w); _Apply a smooth convolution filter to the image._ - List **writeJpg**(Image image, {int quality: 100}); _Generate JPG formatted data for the given image._ - List **writePng**(Image image, {int level: 6}); _Generate PNG formatted data for the given image._ - List **writeTga**(Image image); _Generate TGA formatted data for the given image._ ## Changelog