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UWT now supports DrawImage

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This commit is contained in:
Michael Becker 2020-05-19 13:24:11 -04:00
parent 53ca5abdfc
commit 40f453c391
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GPG Key ID: 506F54899E2BFED7
3 changed files with 29 additions and 9 deletions
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2
Plugins.UserInterface/UniversalEditor.Plugins.Multimedia.UserInterface/Controls/DrawingArea/DrawingAreaControl.cs
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@ -54,7 +54,9 @@ namespace UniversalEditor.Controls.DrawingArea
else
{
Console.WriteLine("new picture dimensions {0}x{1}", mvarPicture.Width, mvarPicture.Height);
Image image = mvarPicture.ToImage();
e.Graphics.DrawImage(image, 0, 0);
}
}
}

22
Plugins.UserInterface/UniversalEditor.Plugins.Multimedia.UserInterface/PictureObjectModelExtensions.cs
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@ -37,17 +37,21 @@ namespace UniversalEditor.Plugins.Multimedia.UserInterface
/// <param name="pic">The <see cref="PictureObjectModel" /> containing the image data to convert.</param>
public static Image ToImage(this PictureObjectModel pic)
{
Image image = Image.Create(pic.Width, pic.Height);
Graphics g = Graphics.FromImage(image);
for (int x = 0; x < pic.Width; x++)
byte[] input = pic.ToByteArray();
byte[] output = new byte[input.Length];
for (int i = 0; i < input.Length; i += 4)
{
for (int y = 0; y < pic.Height; y++)
{
Color c = pic.GetPixel(x, y);
g.DrawLine(new Pen(c), x, y, x + 1, y + 1);
}
byte b = input[i];
byte g = input[i + 1];
byte r = input[i + 2];
byte a = input[i + 3];
output[i] = r;
output[i + 1] = g;
output[i + 2] = b;
output[i + 3] = a;
}
Image image = Image.FromBytes(output, pic.Width, pic.Height, pic.Stride);
return image;
}
}

14
Plugins/UniversalEditor.Plugins.Multimedia/ObjectModels/Multimedia/Picture/PictureObjectModel.cs
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@ -37,6 +37,20 @@ namespace UniversalEditor.ObjectModels.Multimedia.Picture
private PositionVector2 lastAddedLocation = new PositionVector2(0, 0);
public int Stride
{
get
{
// thanks https://stackoverflow.com/questions/2185944/why-must-stride-in-the-system-drawing-bitmap-constructor-be-a-multiple-of-4
// this calculation is CORRECT (at least on gdkpixbuf) so ***DON'T TOUCH IT***
int bitsPerPixel = 32; // ((int)format & 0xff00) >> 8;
int bytesPerPixel = 4; // (bitsPerPixel + 7) / 8; // wtf???
int stride = 4 * ((Width * bytesPerPixel + 3) / 4);
return stride;
}
}
public List<Color> ColorMap { get; } = new List<Color>();
public void SetPixel(Color color)