Mercurial > hg > ucis.core
changeset 33:e9b704f193df
FBGUI: Improved FBGImageBox
author | Ivo Smits <Ivo@UCIS.nl> |
---|---|
date | Fri, 19 Apr 2013 17:46:24 +0200 |
parents | ff1bc8445743 |
children | 70bde4fa6a2f |
files | FBGUI/FBGUI.cs |
diffstat | 1 files changed, 36 insertions(+), 11 deletions(-) [+] |
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line diff
--- a/FBGUI/FBGUI.cs Fri Apr 19 16:54:51 2013 +0200 +++ b/FBGUI/FBGUI.cs Fri Apr 19 17:46:24 2013 +0200 @@ -1370,9 +1370,20 @@ } public class FBGImageBox : FBGControl { Image image = null; + Image scaledImage = null; + Size imageSize; + Boolean ownsImage = false; PictureBoxSizeMode sizeMode = PictureBoxSizeMode.Normal; Rectangle imageRect; - public Image Image { get { return image; } set { image = value; UpdateImageRect(Size.Empty); } } + public Image Image { get { return image; } set { SetImage(value, false); } } + public Boolean PreScaleImage { get; set; } + public void SetOwnedImage(Image img) { SetImage(img, true); } + private void SetImage(Image img, Boolean owned) { + image = img; + imageSize = img == null ? Size.Empty : img.Size; + ownsImage = owned; + UpdateImageRect(Size.Empty); + } public FBGImageBox(IFBGContainerControl parent) : base(parent) { } public PictureBoxSizeMode SizeMode { get { return sizeMode; } set { sizeMode = value; UpdateImageRect(Size.Empty); } } public override Rectangle Bounds { @@ -1380,43 +1391,48 @@ return base.Bounds; } set { - UpdateImageRect(value.Size); + if (Bounds.Size != value.Size) UpdateImageRect(value.Size); base.Bounds = value; } } private void UpdateImageRect(Size csize) { + if (scaledImage != null && scaledImage != image) scaledImage.Dispose(); + scaledImage = null; if (image == null) return; Boolean boundsset = !csize.IsEmpty; if (!boundsset && sizeMode == PictureBoxSizeMode.AutoSize) { - Size = Image.Size; + scaledImage = image; + Size = imageSize; return; } if (!boundsset) csize = Bounds.Size; switch (sizeMode) { case PictureBoxSizeMode.AutoSize: case PictureBoxSizeMode.Normal: - imageRect = new Rectangle(Point.Empty, image.Size); + imageRect = new Rectangle(Point.Empty, imageSize); break; case PictureBoxSizeMode.CenterImage: - imageRect = new Rectangle(csize.Width / 2 - image.Width / 2, csize.Height / 2 - Image.Height / 2, image.Width, image.Height); + imageRect = new Rectangle(csize.Width / 2 - imageSize.Width / 2, csize.Height / 2 - imageSize.Height / 2, imageSize.Width, imageSize.Height); break; case PictureBoxSizeMode.StretchImage: imageRect = new Rectangle(Point.Empty, csize); break; case PictureBoxSizeMode.Zoom: - float xrat = (float)csize.Width / (float)image.Width; - float yrat = (float)csize.Height / (float)image.Height; + float xrat = (float)csize.Width / (float)imageSize.Width; + float yrat = (float)csize.Height / (float)imageSize.Height; float rat = Math.Min(xrat, yrat); - SizeF dispsize = new SizeF(image.Width * rat, image.Height * rat); + SizeF dispsize = new SizeF(imageSize.Width * rat, imageSize.Height * rat); imageRect = Rectangle.Round(new RectangleF(csize.Width / 2f - dispsize.Width / 2f, csize.Height / 2f - dispsize.Height / 2f, dispsize.Width, dispsize.Height)); break; } + if (imageRect.Size == imageSize) scaledImage = image; if (!boundsset) Invalidate(); } protected override void Paint(Graphics g) { if (!Visible) return; base.Paint(g); - if (image != null) g.DrawImage(image, imageRect); + if (PreScaleImage && scaledImage == null && image != null) scaledImage = new Bitmap(image, imageRect.Size); + if (scaledImage != null) g.DrawImage(image, imageRect); } public Point PointToImage(Point point) { switch (sizeMode) { @@ -1430,12 +1446,21 @@ case PictureBoxSizeMode.StretchImage: case PictureBoxSizeMode.Zoom: default: - point.X = (point.X - imageRect.X) * image.Width / imageRect.Width; - point.Y = (point.Y - imageRect.Y) * image.Height / imageRect.Height; + point.X = (point.X - imageRect.X) * imageSize.Width / imageRect.Width; + point.Y = (point.Y - imageRect.Y) * imageSize.Height / imageRect.Height; break; } return point; } + protected override void Orphaned() { + base.Orphaned(); + if (scaledImage != null && scaledImage != image) scaledImage.Dispose(); + scaledImage = null; + if (ownsImage) { + image.Dispose(); + image = null; + } + } } public class FBGListBox : FBGControl { private List<Object> items = new List<object>();