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Fix weird scroll position when going from no scroll zoom value

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Also prefer top left corner in that situation - it is less disorienting when working with screenshots.
This commit is contained in:
Killy 2020-04-30 17:39:03 +03:00
parent 99742ad05a
commit 464e5e872f
1 changed files with 11 additions and 2 deletions
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13
Greenshot/Forms/ImageEditorForm.cs
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@ -1581,10 +1581,19 @@ namespace Greenshot {
}
// Store old scroll position
// When no scroll is currently needed - prefer top left corner.
var horizontalCenter = 0.0;
var verticalCenter = 0.0;
var rc = surface.GetVisibleRectangle();
var size = surface.Size;
var horizontalCenter = 1.0 * (rc.Left + rc.Width / 2) / size.Width;
var verticalCenter = 1.0 * (rc.Top + rc.Height / 2) / size.Height;
if (size.Width > rc.Width)
{
horizontalCenter = 1.0 * (rc.Left + rc.Width / 2) / size.Width;
}
if (size.Height > rc.Height)
{
verticalCenter = 1.0 * (rc.Top + rc.Height / 2) / size.Height;
}
// Set the new zoom value
_zoomValue = value;