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Published 5 years ago Dart 3 incompatible• Latest: 0.5.2
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Charts Library for Flutter, written in Dart with Flutter.

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version 0.1.8 (2018-06-20) #

Enhancements #

Making the codebase Dart 2 clean #

Made changes to remove any analyser messages with Dart 2.

Labels auto layout - added pluggable and automated ability to ensure that labels "fit", and do not overlap #

This release added the ability to "iteratively auto layout" labels.

Labels auto layout is a sequence of steps, such as skipping some labels, tilting labels, or decreasing label font, that result in label 'fit' nicely, readably, without overflowing or running into each other.

The ability to auto layout labels is implemented using a pluggable base class LabelLayoutStrategy, and a concrete implemented extension DefaultIterativeLabelLayoutStrategy. This default implementation of the iterative auto layout achieves that labels, defines a zero or more sequences of steps, each performing a specific code to achieve labels fit, such as:

  • Skipping every 2nd label
  • Tilting all labels
  • Decreasing label font size

The term "iterative" in "iteratively auto layout" refers to the fact the LabelLayoutStrategy repeates the layout steps multiple times, until a good fit is achieved.

The LabelLayoutStrategy and extensions, including the default DefaultIterativeLabelLayoutStrategy, are members of containers which implement the AdjustableContent, or extend the abstract AdjustableContentChartAreaContainer. The term "adjustable content" here refers to ability to adjust sizes of child components, or even remove child components which would overlap in default conditions (sizes, and mumbers). See usages of _xContainerLabelLayoutStrategy in the sample app example/lib/main.dart for an example how to use custom LabelLayoutStrategy extensions. In practice, AdjustableContent is only used for multiple potentially overlaping labels. This knowledge is not necessary for most users who are merely using the default (not built in) iterative auto layout provided by the AdjustableContentChartAreaContainer.

To learn more about the new auto layout process, see the README.md section "Illustration of the new "iterative auto layout" feature".

Graceful skipping of legend #

This release added the ability to skip the legend, when there is insufficient horizontal space.

Fixes #

Fixed a bug reported by Lorenzo Tejera, using this data #

  void defineOptionsAndData() {
    _lineChartOptions = new LineChartOptions();
    _verticalBarChartOptions = new VerticalBarChartOptions();
    _chartData = new ChartData();
    _chartData.dataRowsLegends = [
      "Spring",
      "Summer"
    ];
    _chartData.dataRows = [
      [1.0, 2.0, 3.0, 4.0],
      [4.0, 3.0, 5.0, 6.0]
    ];
    _chartData.xLabels = ["One", "Two", "Three", "Four"];
    _chartData.assignDataRowsDefaultColors();
    // Note: ChartOptions.useUserProvidedYLabels default is still used (false);
  }

Reason: This code - revisit when removing need for double data

        if (signMax <= 0) {
          from = min;
          to = 0.0; // was 0, caused issues in Interval typed as double.
        } else {
          from = 0.0;// was 0, caused issues in Interval typed as double.
          to = max;
        }

v0.1.7 (2017-12-17) #

Fixed README.md error - images failing to show (https://github.com/mzimmerm/flutter_charts/issues/8)

v0.1.6 (2017-12-03) #

Implemented change in https://github.com/mzimmerm/flutter_charts/issues/5 - allows to set paint on line chart hotspot circles #

Added the following new line chart options in charts/line/options.dart

  ui.Paint hotspotInnerPaint = new ui.Paint()
    ..color = material.Colors.yellow;

  ui.Paint hotspotOuterPaint = new ui.Paint()
    ..color = material.Colors.black;

  double lineStrokeWidth = 3.0;

Implemented change in https://github.com/mzimmerm/flutter_charts/issues/6 - line chart allows to reverse order of data series (dataRows) to make the significant series line to be on top #

Added the following new chart options in charts/options.dart

  bool firstDataRowPaintedFirst = true;

Made several text options configurable #

Moved the following to options in charts/options.dart (from being hardcoded)

  painting.TextStyle labelTextStyle = new painting.TextStyle(
    color: material.Colors.grey[600],
    fontSize: 14.0,);

  ui.TextDirection labelTextDirection   = ui.TextDirection.ltr;
  ui.TextAlign     labelTextAlign       = ui.TextAlign.center;
  double           labelTextScaleFactor = 1.0;

Renamed option xTopMinTicksHeight to xTopPaddingAboveTicksHeight #

New name reflects the usage better.

v0.1.5 (2017-10-27) #

This version finally fixed issue https://github.com/mzimmerm/flutter_charts/issues/2 - flutter charts not actually working as a library package (reason: incorrectly specified dependencies).

v0.1.4 (2017-10-27) #

  • Only changes in documentation. Also publishing using flutter packages pub publish instead of previously incorrect pub publish which resulted in a package that reports error on clients' getting the package using flutter pub get. Hopefully this change will fix the issue. Below is the full error this new version is trying to fix:

The following log is from a test app in https://github.com/mzimmerm/flutter_charts_sample_app. It is mostly relevant as a documentation of the issue, client apps can ignore this.

flutter_charts_sample_app> flutter pub get      
Running "flutter packages get" in flutter_charts_sample_app...      
Package flutter_charts has no versions that match >=0.1.3 <0.2.0 derived from:
- flutter_charts_sample_app depends on version ^0.1.3
---- Log transcript ----
FINE: Pub 1.25.0-dev.11.0
MSG : Resolving dependencies...
SLVR: Solving dependencies:
    | - flutter_charts ^0.1.3 from hosted (flutter_charts)
    | - flutter any from sdk (flutter) (locked to 0.0.37)
IO  : Get versions from https://pub.dartlang.org/api/packages/flutter_charts.
IO  : HTTP GET https://pub.dartlang.org/api/packages/flutter_charts
    | Accept: application/vnd.pub.v2+json
    | X-Pub-OS: linux
    | X-Pub-Command: get
    | X-Pub-Session-ID: 8D558B08-DBBE-4D24-AB8F-C0EEC36157B2
    | X-Pub-Environment: flutter_cli
    | X-Pub-Reason: direct
    | user-agent: Dart pub 1.25.0-dev.11.0
IO  : HTTP response 200 OK for GET https://pub.dartlang.org/api/packages/flutter_charts
    | took 0:00:00.332100
    | transfer-encoding: chunked
    | date: Tue, 28 Nov 2017 05:32:06 GMT
    | content-encoding: gzip
    | vary: Accept-Encoding
    | via: 1.1 google
    | content-type: application/json
    | x-frame-options: SAMEORIGIN
    | x-xss-protection: 1; mode=block
    | x-content-type-options: nosniff
    | server: nginx
SLVR: * start at root
SLVR: | flutter 0.0.37 from sdk is locked
SLVR: | * select flutter 0.0.37 from sdk
SLVR: | | collection 1.14.3 from hosted is locked
SLVR: | | * select collection 1.14.3 from hosted
SLVR: | | | http 0.11.3+14 from hosted is locked
SLVR: | | | * select http 0.11.3+14 from hosted
SLVR: | | | | async 1.13.3 from hosted is locked
SLVR: | | | | * select async 1.13.3 from hosted
SLVR: | | | | | http_parser 3.1.1 from hosted is locked
SLVR: | | | | | * select http_parser 3.1.1 from hosted
SLVR: | | | | | | charcode 1.1.1 from hosted is locked
SLVR: | | | | | | * select charcode 1.1.1 from hosted
SLVR: | | | | | | | meta 1.1.1 from hosted is locked
SLVR: | | | | | | | * select meta 1.1.1 from hosted
SLVR: | | | | | | | | path 1.4.2 from hosted is locked
SLVR: | | | | | | | | * select path 1.4.2 from hosted
SLVR: | | | | | | | | | sky_engine 0.0.99 from path is locked
SLVR: | | | | | | | | | * select sky_engine 0.0.99 from path
SLVR: | | | | | | | | | | source_span 1.4.0 from hosted is locked
SLVR: | | | | | | | | | | * select source_span 1.4.0 from hosted
SLVR: | | | | | | | | | | | stack_trace 1.8.2 from hosted is locked
SLVR: | | | | | | | | | | | * select stack_trace 1.8.2 from hosted
SLVR: | | | | | | | | | | | | string_scanner 1.0.2 from hosted is locked
SLVR: | | | | | | | | | | | | * select string_scanner 1.0.2 from hosted
SLVR: | | | | | | | | | | | | | typed_data 1.1.4 from hosted is locked
SLVR: | | | | | | | | | | | | | * select typed_data 1.1.4 from hosted
SLVR: | | | | | | | | | | | | | | vector_math 2.0.5 from hosted is locked
SLVR: | | | | | | | | | | | | | | * select vector_math 2.0.5 from hosted
SLVR: | | | | | | | | | | | | | | | inconsistent source "hosted" for flutter:
    | | | | | | | | | | | | | | | |   flutter_charts 0.1.3 from hosted -> flutter >=0.0.20 <0.1.0 from hosted (flutter)
    | | | | | | | | | | | | | | | |   flutter_charts_sample_app 0.0.0 (root) -> flutter any from sdk (flutter)
SLVR: | | | | | | | | | | | | | | | version 0.1.2 of flutter_charts doesn't match >=0.1.3 <0.2.0:
    | | | | | | | | | | | | | | | |   flutter_charts_sample_app 0.0.0 (root) -> flutter_charts ^0.1.3 from hosted (flutter_charts)
SLVR: | | | | | | | | | | | | | | | version 0.1.1 of flutter_charts doesn't match >=0.1.3 <0.2.0:
    | | | | | | | | | | | | | | | |   flutter_charts_sample_app 0.0.0 (root) -> flutter_charts ^0.1.3 from hosted (flutter_charts)
SLVR: | | | | | | | | | | | | | | | version 0.1.0 of flutter_charts doesn't match >=0.1.3 <0.2.0:
    | | | | | | | | | | | | | | | |   flutter_charts_sample_app 0.0.0 (root) -> flutter_charts ^0.1.3 from hosted (flutter_charts)
SLVR: BacktrackingSolver took 0:00:00.516136 seconds.
    | - Tried 1 solutions
    | - Requested 1 version lists
    | - Looked up 1 cached version lists
    | 
FINE: Resolving dependencies finished (0.5s).
ERR : Package flutter_charts has no versions that match >=0.1.3 <0.2.0 derived from:
    | - flutter_charts_sample_app depends on version ^0.1.3
FINE: Exception type: NoVersionException
FINE: package:pub/src/entrypoint.dart 195                                             Entrypoint.acquireDependencies
    | package:pub/src/command/get.dart 38                                             GetCommand.run
    | package:args/command_runner.dart 194                                            CommandRunner.runCommand
    | package:pub/src/command_runner.dart 168                                         PubCommandRunner.runCommand.<fn>
    | dart:async                                                                      new Future.sync
    | package:pub/src/utils.dart 102                                                  captureErrors.<fn>
    | package:stack_trace                                                             Chain.capture
    | package:pub/src/utils.dart 117                                                  captureErrors
    | package:pub/src/command_runner.dart 168                                         PubCommandRunner.runCommand
    | package:pub/src/command_runner.dart 117                                         PubCommandRunner.run
    | /b/build/slave/dart-sdk-linux-dev/build/sdk/third_party/pkg/pub/bin/pub.dart 8  main
    | ===== asynchronous gap ===========================
    | dart:async                                                                      _Completer.completeError
    | package:pub/src/entrypoint.dart 243                                             Entrypoint.acquireDependencies
    | ===== asynchronous gap ===========================
    | dart:async                                                                      _asyncThenWrapperHelper
    | package:pub/src/entrypoint.dart 192                                             Entrypoint.acquireDependencies
    | package:pub/src/command/get.dart 38                                             GetCommand.run
    | package:args/command_runner.dart 194                                            CommandRunner.runCommand
    | ===== asynchronous gap ===========================
    | dart:async                                                                      new Future.microtask
    | package:args/command_runner.dart 142                                            CommandRunner.runCommand
    | package:pub/src/command_runner.dart 168                                         PubCommandRunner.runCommand.<fn>
    | dart:async                                                                      new Future.sync
    | package:pub/src/utils.dart 102                                                  captureErrors.<fn>
    | package:stack_trace                                                             Chain.capture
    | package:pub/src/utils.dart 117                                                  captureErrors
    | package:pub/src/command_runner.dart 168                                         PubCommandRunner.runCommand
---- End log transcript ----
pub get failed (1)

v0.1.3 (2017-10-03) #

  • Only changes in README, to figure out how to include images (turns out all links must be external)

v0.1.0 (2017-10-03) #

  • Initial push. Line chart and (vertical) bar chart support. Various options supported.

Semantic Version 2.0.0 Conventions #

This package follows Semantic Version 2.0.0. http://semver.org/

Example: 1.2.3 means MAJOR.MINOR.PATCH

Development: Major version zero (0.y.z) is for initial development. Anything may change at any time. The public API should not be considered stable.

API Stable versions: All versions with the same MAJOR, where MAJOR>0 must have the same API.

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Metadata

Charts Library for Flutter, written in Dart with Flutter.

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License

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Dependencies

decimal, flutter, vector_math

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