chore: Remove unnecessary circle drawing in AccumulatorMarkerIconPainter

[behnam-deriv]

Clickup link:
Fixes issue: #

This PR contains the following changes:

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore

Developers Note (Optional)

Pre-launch Checklist (For PR creator)

As a creator of this PR:

• ✍️ I have included clickup id and package/app_name in the PR title.
• 👁️ I have gone through the code and removed any temporary changes (commented lines, prints, debug statements etc.).
• ⚒️ I have fixed any errors/warnings shown by the analyzer/linter.
• 📝 I have added documentation, comments and logging wherever required.
• 🧪 I have added necessary tests for these changes.
• 🔎 I have ensured all existing tests are passing.

Reviewers

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• ✴️ This PR follows the standard PR template.
• 🪩 The information in this PR properly reflects the code changes.
• 🧪 All the necessary tests for this PR's are passing.

Pre-launch Checklist (For QA)

• 👌 It passes the acceptance criteria.

Pre-launch Checklist (For Maintainer)

• [MAINTAINER_NAME] I make sure this PR fulfills its purpose.

Summary by Sourcery

Enhancements:

• Remove redundant circle rendering in the accumulator marker icon painter to simplify the marker visuals.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Simplifies the accumulator marker icon painting by removing an unnecessary small circle rendering before drawing the dashed horizontal line.

Class diagram for updated AccumulatorMarkerIconPainter painting logic

classDiagram
  class TickMarkerIconPainter {
  }

  class AccumulatorMarkerIconPainter {
    +paint(Canvas canvas, double startX, double y, Color circleColor, Color barrierColor)
    -drawSmallCircle(Canvas canvas, double startX, double y, Color circleColor)
    +paintHorizontalDashedLine(Canvas canvas, double startX, double y, Color barrierColor)
  }

  TickMarkerIconPainter <|-- AccumulatorMarkerIconPainter

Loading

File-Level Changes

Change	Details	Files
Remove redundant circle drawing from the accumulator marker icon painter for a cleaner rendering.	Delete the canvas.drawCircle call that rendered a small circle at the start of the marker line Keep the horizontal dashed line rendering logic intact	lib/src/deriv_chart/chart/data_visualization/markers/marker_icon_painters/accumulator_marker_icon_painter.dart

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[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details

Scanned Manifest Files

[claude]

Claude finished @behnam-deriv's task —— View job

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PR Review Complete

Todo List:

• Read the changed file to understand the modifications
• Analyze the git diff to see what was removed
• Check for related test files
• Review for correctness and potential regressions
• Provide comprehensive feedback

---

Summary

This PR removes 6 lines of code that were drawing a circle at the start of the previous tick barrier line in the AccumulatorMarkerIconPainter. The change is safe and improves code quality by removing visual redundancy.

Review Findings

✅ Correctness & Regression Analysis - APPROVED

The removed code was drawing a small circle (radius 1.5) at the start of the previous tick barrier line:

canvas.drawCircle(
  Offset(startX, y),
  1.5,
  Paint()..color = circleColor,
);

Analysis:

• The method _drawPreviousTickBarrier now only draws a horizontal dashed line to indicate the previous tick position
• The circle was likely redundant because the line itself is sufficient to show the previous tick level
• The removal doesn't break any functionality - the previous tick indication is still present via the dashed line
• No other code references this specific circle drawing logic

Risk Assessment: Low risk of regression. The visual output will be slightly simpler (no circle indicator), but the functional purpose of showing the previous tick barrier remains intact through the dashed line.

✅ Code Quality - GOOD

• The change aligns with the PR title: "remove unnecessary circle drawing"
• Code remains clean and readable after the removal
• Documentation (dartdoc comments) for the method accurately describes what it does: "Draws a horizontal dashed line... for the previous tick" - the circle was not mentioned in the docs, suggesting it was indeed redundant
• The method signature and parameters remain logical

✅ Performance - MINOR IMPROVEMENT

Removing the canvas.drawCircle() call eliminates one drawing operation per previous tick marker, which is a minor performance improvement in rendering.

⚠️ Testing - NO COVERAGE

Priority: Low

There are no unit or widget tests for the AccumulatorMarkerIconPainter class or its methods. While this is not introduced by this PR, it's worth noting:

• No automated tests exist to verify the visual output before/after this change
• Manual testing or visual regression testing should be performed to confirm the change is acceptable
• Consider adding golden tests or widget tests for marker painters in the future

ℹ️ Documentation

The method's dartdoc comment at line 289 describes: "Draws a horizontal dashed line with a circle indicator for the previous tick."

Suggestion: Since the circle is being removed, consider updating the documentation to reflect the actual behavior:

/// Draws a horizontal dashed line for the previous tick.
///
/// This visualizes the previous price level before the current tick, providing
/// context for price movement within the accumulator contract.

File: lib/src/deriv_chart/chart/data_visualization/markers/marker_icon_painters/accumulator_marker_icon_painter.dart:289-292

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Recommendations

High Priority

None - the change is safe to merge.

Medium Priority

• Update documentation: Remove mention of "circle indicator" from the dartdoc comment at line 289, since the circle is no longer drawn.

Low Priority

• Visual verification: Perform manual testing to ensure the visual appearance is acceptable without the circle
• Future consideration: Add visual regression tests or golden tests for marker painters to catch unintended visual changes

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Verdict

✅ APPROVED - This is a clean refactoring that removes redundant visual elements. The only suggestion is to update the method documentation to match the new behavior.

[sourcery-ai]

Hey - I've left some high level feedback:

• Now that the circle is no longer drawn, consider removing the unused circleColor parameter (and any related call-site arguments) from this method to keep the API minimal and avoid confusion.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Now that the circle is no longer drawn, consider removing the unused `circleColor` parameter (and any related call-site arguments) from this method to keep the API minimal and avoid confusion.

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