[BUG]: Not able to change text color of form fields in the PDF

[pranavbansod]

Description

Unidoc version: 3.57.0
I'm trying to fill pdf form from a json. I want to change text color of the new values which are filled from the Json.
Reference Code: https://github.com/unidoc/unipdf-examples/blob/master/forms/pdf_form_fill_json.go

	// NOTE: To customize certain styles try:
	// style := fieldAppearance.Style()
	// style.CheckmarkGlyph = "a22"
	// style.AutoFontSizeFraction = 0.70
	// fieldAppearance.SetStyle(style)
	//
	// or for specifying a full set of appearance styles:
	// fieldAppearance.SetStyle(annotator.AppearanceStyle{
	//     CheckmarkGlyph:       "a22",
	//     AutoFontSizeFraction: 0.70,
	//     FillColor:            model.NewPdfColorDeviceGray(0.8),
	//     BorderColor:          model.NewPdfColorDeviceRGB(1, 0, 0),
	//     BorderSize:           2.0,
	//     AllowMK:              false,
	// })

I'm trying to set FillColor of AppearanceStyle to change the color. But it is not changing.
I tried using different methods to change color

model.NewPdfColorDeviceGray(0.8)
model.NewPdfColorDeviceRGB(1, 0, 0)

The above methods I used are changing border color when set to BorderColor: model.NewPdfColorDeviceRGB(1, 0, 0).
But the same is not happening when I try to change text color.

Expected Behavior

It should change the text color.

Attachments

Here is the code snippet:

fieldAppearance.SetStyle(annotator.AppearanceStyle{
	CheckmarkGlyph:       "a22",
	AutoFontSizeFraction: 0.70,
	FillColor:            model.NewPdfColorDeviceGray(0.8),
	BorderColor:          model.NewPdfColorDeviceRGB(1, 0, 0),
	BorderSize:           2.0,
	AllowMK:              false,
})

[github-actions]

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[kellemNegasi]

Hi @pranavbansod, Thank you for reporting this issue. Currently, there is no rich text support for form field values in UniPDF, which means this is a feature request. We have created a ticket for this, and we will implement it in the future. We will write an update on this issue as soon as the feature gets released.

[kellemNegasi]

Hi @pranavbansod , This feature has been implemented in Unipdf version v3.61.0.
You can choose a custom text color for text fields as follows.

        fieldAppearance := annotator.FieldAppearance{OnlyIfMissing: true, RegenerateTextFields: true}

	// specify a full set of appearance styles
	fieldAppearance.SetStyle(annotator.AppearanceStyle{
		AutoFontSizeFraction: 0.70,
		FillColor:            model.NewPdfColorDeviceRGB(1, 1, 1),
		BorderColor:          model.NewPdfColorDeviceRGB(0, 0, 0),
		BorderSize:           2.0,
		AllowMK:              false,
		TextColor:            model.NewPdfColorDeviceRGB(0.5, 0.8, 0.8), // text color as normalized RGB values
	})

	// Populate the form data with appearance.
	pdfReader.AcroForm.FillWithAppearance(fdata, fieldAppearance)