resize the insert image to fit the cell

[yoshhiide]

PR Details

resize the insert image to fit the cell.

Description

Added "autofit" option to "AddPicture".
Resize the image to the size of a single cell or merged cell.

example)

xlsx.AddPicture("Sheet1", "A30", "./image1.jpg", {"autofit": true})
xlsx.AddPicture("Sheet1", "B30", "./image1.jpg", {"autofit": true, "x_offset": 10, "y_offset": 10})

result)

"B30: C33" is a merged cell

Related Issue

#384

Motivation and Context

I want to reduce manual editing by automatic image resizing.

How Has This Been Tested

I added a test code to picture_test.go and verified it.

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-io]

Codecov Report

Merging #410 into master will decrease coverage by 1.32%.
The diff coverage is 76.19%.

@@            Coverage Diff             @@
##           master     #410      +/-   ##
==========================================
- Coverage   96.26%   94.94%   -1.33%     
==========================================
  Files          26       22       -4     
  Lines        5513     4528     -985     
==========================================
- Hits         5307     4299    -1008     
- Misses        115      130      +15     
- Partials       91       99       +8

Impacted Files	Coverage Δ
cellmerged.go	85% <100%> (-15%)	⬇️
picture.go	95.48% <75%> (-3.02%)	⬇️
excelize.go	89.47% <0%> (-5.68%)	⬇️
sheetpr.go	94.36% <0%> (-5.64%)	⬇️
cell.go	87.31% <0%> (-1.71%)	⬇️
adjust.go	95.12% <0%> (-1.22%)	⬇️
sheet.go	95.41% <0%> (-0.57%)	⬇️
styles.go	98.91% <0%> (-0.37%)	⬇️
... and 12 more

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[paologf-mb]

Hello, how is going the integration of this useful feature? Is still in progress or is abandoned? Thanks

[xuri]

Hello, how is going the integration of this useful feature? Is still in progress or is abandoned? Thanks

I will review this PR this weekend.

[xuri]

Sorry for my late reply. I have added autofit support for AddPicture API. Thanks for your PR, @yoshhiide. I resolve conflicts and perform a manual merge.