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Change zoom levels

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This commit is contained in:
Jaex 2022-02-15 11:59:48 +03:00
parent cf0336c0f4
commit 3da4e3ac3c
1 changed files with 37 additions and 10 deletions
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47
ShareX.ScreenCaptureLib/Forms/RegionCaptureForm.cs
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@ -62,13 +62,12 @@ public sealed class RegionCaptureForm : Form
public bool IsImageModified => ShapeManager != null && ShapeManager.IsImageModified;
public Point CurrentPosition { get; private set; }
public Point PanningStrech = new Point();
public SimpleWindowInfo SelectedWindow { get; private set; }
public Vector2 CanvasCenterOffset { get; set; } = new Vector2(0f, 0f);
internal Point PanningStrech = new Point();
internal Vector2 CanvasCenterOffset { get; set; } = new Vector2(0f, 0f);
public float ZoomFactor
internal float ZoomFactor
{
get
{
@ -80,8 +79,7 @@ public float ZoomFactor
}
}
public bool IsZoomed => Math.Round(ZoomFactor * 100) != 100;
internal bool IsZoomed => Math.Round(ZoomFactor * 100) != 100;
internal Point ScaledClientMousePosition => InputManager.ClientMousePosition.Scale(1 / ZoomFactor);
internal Point ScaledClientMouseVelocity => InputManager.MouseVelocity.Scale(1 / ZoomFactor);
internal Point ScaledClientCenter => new Point((int)Math.Round(ClientArea.Width / 2f / ZoomFactor), (int)Math.Round(ClientArea.Height / 2f / ZoomFactor));
@ -713,12 +711,41 @@ private void RegionCaptureForm_MouseWheel(object sender, MouseEventArgs e)
}
}
private void Zoom(bool closer, bool atMouse = true)
private void Zoom(bool zoomIn, bool atMouse = true)
{
const float ZoomScaleAmount = 1.1F;
Point centerBefore = atMouse ? ScaledClientMousePosition : ScaledClientCenter;
ZoomFactor *= closer ? ZoomScaleAmount : 1 / ZoomScaleAmount;
if (zoomIn)
{
if (ZoomFactor >= 2f)
{
ZoomFactor += 0.5f;
}
else if (ZoomFactor >= 1f)
{
ZoomFactor += 0.25f;
}
else
{
ZoomFactor += 0.1f;
}
}
else
{
if (ZoomFactor <= 1f)
{
ZoomFactor -= 0.1f;
}
else if (ZoomFactor <= 2f)
{
ZoomFactor -= 0.25f;
}
else
{
ZoomFactor -= 0.5f;
}
}
Point centerAfter = atMouse ? ScaledClientMousePosition : ScaledClientCenter;
Point delta = new Point(centerAfter.X - centerBefore.X, centerAfter.Y - centerBefore.Y);