Fix map center positioning with rotation and information drawer

[mohsenD98]

Pull Request Description

When clicking the "next feature" button in geometry editing mode, the map center position was incorrect when:

1. The map was rotated
2. The information drawer was open

This happened because the margin adjustments for the information drawer weren't properly accounting for map rotation.

✨ Solution

The fix modifies the setCenter function in QgsQuickMapSettings to properly handle margin adjustments with rotation. Here's how it works:

1. Base Margin Calculation

const double baseXAdjustment = mRightMargin * devicePixelRatio() * mMapSettings.mapUnitsPerPixel() / 2;
const double baseYAdjustment = mBottomMargin * devicePixelRatio() * mMapSettings.mapUnitsPerPixel() / 2;

• We calculate the base margin adjustments in map units
• The division by 2 is crucial because the margin needs to be split between both sides of the center point
• This ensures proper centering when rotation is 0

2. Rotation Adjustment

const double rotationRadians = mMapSettings.rotation() * M_PI / 180.0;
const double xAdjustment = baseXAdjustment * cos(rotationRadians) - baseYAdjustment * sin(rotationRadians);
const double yAdjustment = baseXAdjustment * sin(rotationRadians) + baseYAdjustment * cos(rotationRadians);

• We convert the rotation angle to radians
• ✨ We use rotation matrices to transform the margin adjustments:
  • xAdjustment = baseX * cos(θ) - baseY * sin(θ)
  • yAdjustment = baseX * sin(θ) + baseY * cos(θ)
• This properly rotates the margin adjustments to account for the map's rotation

Issue

issue.before.webm

Fixed

Screencast.From.2025-05-21.20-11-00.webm

[duke-nyuki]

Task linked: QF-5910 Vertex Editor Improvments

[qfield-fairy]

🎉 Ta-daaa, freshly created APKs are available for 0694803: arm64-android

Other architectures

• arm-neon-android
• x64-android
• x86-android
• all access arm64-android
• all access arm-neon-android
• all access x64-android
• all access x86-android

[nirvn]

Suggested change

	if ( handleMargins )
	if ( handleMargins && ( !qgsDoubleNear( mRightMargin, 0.0 ) || !qgsDoubleNear( mBottomMargin, 0.0 ) )