Add gradient bars for BarChart [master branch] #4411

larryonoff · 2020-07-08T07:52:59Z

This PR adds functionality to draw gradient bars with BarChartDataSet based on master branch

liuxuan30 · 2020-07-13T01:13:01Z

ChartsDemo-iOS/Swift/Demos/BarChartViewController.swift

        if let set = chartView.data?.dataSets.first as? BarChartDataSet {
-            set1 = set
-            set1.replaceEntries(yVals)
+            setup(set)


let's rename to a more meaningful name to imply it's about setup gradient

liuxuan30 · 2020-07-13T01:15:40Z

ChartsDemo-iOS/Swift/Demos/LineChart1ViewController.swift

@@ -174,6 +175,11 @@ class LineChart1ViewController: DemoBaseViewController {
                set.mode = (set.mode == .cubicBezier) ? .horizontalBezier : .cubicBezier
            }
            chartView.setNeedsDisplay()
+        case .toggleGradient:


is it possible for you to add the objc portion? (feel free to say no)

liuxuan30 · 2020-07-13T01:18:50Z

Source/Charts/Renderers/BarChartRenderer.swift

+        if dataSet.drawBarGradientEnabled {
+            drawGradientBars(context: context, dataSet: dataSet, buffer: buffer, matrix: valueToPixelMatrix)
+        } else {
+            drawDefaultBars(context: context, dataSet: dataSet, dateSetIndex: index, buffer: buffer)


maybe drawNormalBars or standard bars, etc? not sure which is better. @jjatie idea?

liuxuan30 · 2020-07-13T01:26:59Z

Source/Charts/Renderers/BarChartRenderer.swift

+                context.setLineWidth(dataSet.barBorderWidth)
+                context.stroke(barRect)
+            }
+        }


in gradient bars, accessibilityOrderedElements is missing?

@liuxuan30 pushed commit. Hope that I did it correct.

liuxuan30 · 2020-07-13T01:32:07Z

Source/Charts/Utils/Platform.swift

@@ -124,6 +140,26 @@ public class NSUIDisplayLink
    }
 }

+extension NSUIColor
+{
+    var nsuirgba: (red: CGFloat, green: CGFloat, blue: CGFloat, alpha: CGFloat)? {


though the imp is different, here are two var nsuirgba in one extension? typo? or two vars indeed?

@larryonoff can you get the notification? I basically finished the review, jsut some minor issues to address.

liuxuan30 · 2020-07-13T01:32:53Z

Source/Charts/Utils/Platform.swift

@@ -14,6 +14,22 @@ public typealias NSUIScrollView = UIScrollView
 public typealias NSUIScreen = UIScreen
 public typealias NSUIDisplayLink = CADisplayLink

+extension NSUIColor
+{
+    var nsuirgba: (red: CGFloat, green: CGFloat, blue: CGFloat, alpha: CGFloat)? {


move { to a new line

liuxuan30 · 2020-07-13T01:34:31Z

@jjatie @danielgindi please also take a look. Generally I'm accepting except for some minor issues.

prats-iosdeveloper · 2020-07-22T13:11:08Z

Hi i want to implement gradient bars with round corners when to expect this merge?

larryonoff · 2020-07-22T13:18:37Z

@liuxuan30 @danielgindi Hi. Sorry for the delay in responding. Really busy these weeks. I won't be able to check this PR for some time. But I think It can be done without my help easily.

liuxuan30 · 2020-07-27T01:58:47Z

@larryonoff I could fix most of them, but two left need your input,

1st is about accessibilityOrderedElements in the new code, I didn't see it. Did you just forget or because there are issues?

2st is about the var nsuirgba, I need your input which is new, because you added two same var with different implementation. And I can't tell which is the right one.

rename `setup(_ dataSet: BarChartDataSet)` to `setupBarGradient(_ dataSet: BarChartDataSet)`

rename `drawDefaultBars` to `drawNormalBars`

larryonoff · 2020-07-27T08:28:21Z

@liuxuan30

1st is about accessibilityOrderedElements in the new code, I didn't see it. Did you just forget or because there are issues?

just pushed commit

2st is about the var nsuirgba, I need your input which is new, because you added two same var with different implementation. And I can't tell which is the right one.

nsuirgba implementation differs for macOS and iOS.

iOS uses UIColor.getRed, which returns success / not and only available for iOS .
macOS uses NSColor.getRed, which doesn't return any values (I'm not sure, but it may crash if input parameters doesn't fit RGB model).

liuxuan30 · 2020-07-28T00:17:14Z

@larryonoff I saw nsuirgba is ported from 4.0 branch.

I was evaluating which branch is better to merge, merging into master will have more conflicts while merging 4.0 branch, so I was kind of unsure.

anyway, I could take on from here. Thanks!

liuxuan30 · 2020-07-28T01:32:17Z

I think the best way is to merge 4.0 branch first, and try to merge this.

I'm actively working on the 4.0 merge right now, and it could take 1-2 weeks to resolve the conflicts.

@danielgindi @jjatie

ChartsOrg#4411

StackHelp · 2020-11-04T12:48:36Z

@liuxuan30 Can we have a merged file in next few weeks?

liuxuan30 · 2020-11-06T07:31:45Z

I think so, @larryonoff so we have merged the 4.0 branch into master, now this is the next we want to merge. I'm switching to master base

liuxuan30 · 2020-11-06T07:36:43Z

@larryonoff any chance you could fix the conflicts?

larryonoff · 2020-11-06T07:54:40Z

@liuxuan30 hey! sorry, but not in a week. very busy.

StackHelp · 2020-11-24T09:40:13Z

@larryonoff @liuxuan30 Any chance to update in this week?

liuxuan30 · 2020-12-14T03:20:18Z

Sorry I‘m super busy recently as well. I hope someone could help on this PR, basically solve the conflict with master.

4np · 2020-12-15T13:23:47Z

This would be easy to accomplish by providing your custom renderer, if #4297 was merged.

glennposadas · 2021-02-16T09:26:32Z

Hi everyone! Sorry for hijacking this PR. But I';ve been reading the commits, and I still have no idea how to apply gradient colors to my HorizontalBarChartView. I don't see any property too in BarChartDataSet that is related to gradient. I'm using 4.0.0. Any idea? Thanks!

EDIT: I suppose this hasn't been merged to the Master.

dbrisinda · 2023-05-26T23:59:55Z

May 2023 and still waiting on this...

larryonoff added 2 commits July 8, 2020 11:04

Add gradient bars for BarChart

e6f82b3

Add gradient start and gradient end to bar chart renderer

842b0d8

larryonoff force-pushed the bar-chart-gradient-3.x branch from 78706eb to 842b0d8 Compare July 8, 2020 08:04

larryonoff mentioned this pull request Jul 8, 2020

Add gradient bars for BarChart #3533

Closed

liuxuan30 added 2 commits July 13, 2020 09:26

update code style

b7af4db

update code style

30c8b21

liuxuan30 requested changes Jul 13, 2020

View reviewed changes

liuxuan30 self-assigned this Jul 13, 2020

liuxuan30 mentioned this pull request Jul 13, 2020

Add Gradient to Bar Chart - BarChartDataSet #4385

Closed

liuxuan30 added 2 commits July 27, 2020 10:07

Update BarChartViewController.swift

be3ddb3

rename `setup(_ dataSet: BarChartDataSet)` to `setupBarGradient(_ dataSet: BarChartDataSet)`

Update BarChartRenderer.swift

204f66e

rename `drawDefaultBars` to `drawNormalBars`

liuxuan30 changed the base branch from master to GradientBars July 27, 2020 02:15

Add accessibilityOrderedElements support

e59ade1

fatbobman added a commit to fatbobman/Charts that referenced this pull request Oct 15, 2020

增加了给barChart增加渐变

5ed7003

ChartsOrg#4411

liuxuan30 changed the base branch from GradientBars to master November 6, 2020 07:36

liuxuan30 assigned jjatie Nov 6, 2020

4np mentioned this pull request Jan 29, 2021

Review / merge PR #4297 #4569

Open

ShresthPratapSingh mentioned this pull request Jun 3, 2021

Feature Request:- Add Gradient to Bar chart Bars #4652

Open

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Add gradient bars for BarChart [master branch] #4411

Add gradient bars for BarChart [master branch] #4411

larryonoff commented Jul 8, 2020

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dbrisinda commented May 26, 2023

Add gradient bars for BarChart [master branch] #4411

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Add gradient bars for BarChart [master branch] #4411

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liuxuan30 commented Jul 13, 2020

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