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fixed #5560: If magnifier is close to edges then draw canvas background

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This commit is contained in:
Jaex 2021-06-08 21:51:40 +03:00
parent f7b100800b
commit 1e8fb8a6fb
1 changed files with 10 additions and 4 deletions
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14
ShareX.ScreenCaptureLib/Forms/RegionCaptureForm.cs
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@ -1253,6 +1253,9 @@ private Bitmap Magnifier(Image img, Point position, int horizontalPixelCount, in
pixelSize = 10;
}
Rectangle srcRect = new Rectangle(position.X - (horizontalPixelCount / 2) - CanvasRectangle.X,
position.Y - (verticalPixelCount / 2) - CanvasRectangle.Y, horizontalPixelCount, verticalPixelCount);
int width = horizontalPixelCount * pixelSize;
int height = verticalPixelCount * pixelSize;
Bitmap bmp = new Bitmap(width - 1, height - 1);
@ -1260,11 +1263,14 @@ private Bitmap Magnifier(Image img, Point position, int horizontalPixelCount, in
using (Graphics g = Graphics.FromImage(bmp))
{
g.InterpolationMode = InterpolationMode.NearestNeighbor;
if (!new Rectangle(0, 0, img.Width, img.Height).Contains(srcRect))
{
g.Clear(canvasBackgroundColor);
}
g.PixelOffsetMode = PixelOffsetMode.Half;
g.DrawImage(img, new Rectangle(0, 0, width, height), new Rectangle(position.X - (horizontalPixelCount / 2) - CanvasRectangle.X,
position.Y - (verticalPixelCount / 2) - CanvasRectangle.Y, horizontalPixelCount, verticalPixelCount), GraphicsUnit.Pixel);
g.DrawImage(img, new Rectangle(0, 0, width, height), srcRect, GraphicsUnit.Pixel);
g.PixelOffsetMode = PixelOffsetMode.None;
using (SolidBrush crosshairBrush = new SolidBrush(Color.FromArgb(125, Color.LightBlue)))