CodeMirror/ShareX
1
0
Fork 0
mirror of https://github.com/ShareX/ShareX.git synced 2024-07-04 14:11:38 +12:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'image-editor-auto-crop'

Browse source
This commit is contained in:
Jaex 2017-12-01 02:44:06 +03:00
parent fd0bc4bfff ec9f9e6bf2
commit 69fd80dd76
3 changed files with 138 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

125
ShareX.HelpersLib/Helpers/ImageHelpers.cs
View file

@ -267,7 +267,7 @@ public static Bitmap CropBitmap(Bitmap bmp, Rectangle rect)
}
/// <summary>Automatically crop image to remove transparent outside area.</summary>
public static Bitmap AutoCropImage(Bitmap bmp)
public static Bitmap AutoCropTransparent(Bitmap bmp)
{
Rectangle source = new Rectangle(0, 0, bmp.Width, bmp.Height);
Rectangle rect = source;
@ -354,7 +354,7 @@ public static Bitmap AutoCropImage(Bitmap bmp)
}
/// <summary>Automatically crop image to remove transparent outside area. Only checks center pixels.</summary>
public static Bitmap QuickAutoCropImage(Bitmap bmp)
public static Bitmap QuickAutoCropTransparent(Bitmap bmp)
{
Rectangle source = new Rectangle(0, 0, bmp.Width, bmp.Height);
Rectangle rect = source;
@ -1645,5 +1645,126 @@ public static void DrawColorPickerIcon(Graphics g, Color color, Rectangle rect,
g.DrawRectangleProper(Pens.Black, holeRect);
}
}
public static Rectangle FindAutoCropRectangle(Bitmap bmp, bool sameColorCrop = false)
{
Rectangle source = new Rectangle(0, 0, bmp.Width, bmp.Height);
Rectangle crop = source;
using (UnsafeBitmap unsafeBitmap = new UnsafeBitmap(bmp, true, ImageLockMode.ReadOnly))
{
bool leave = false;
ColorBgra checkColor = unsafeBitmap.GetPixel(0, 0);
// Find X (Left to right)
for (int x = 0; x < bmp.Width && !leave; x++)
{
for (int y = 0; y < bmp.Height; y++)
{
if (unsafeBitmap.GetPixel(x, y) != checkColor)
{
crop.X = x;
leave = true;
break;
}
}
}
// If all pixels same color
if (!leave)
{
return crop;
}
leave = false;
if (!sameColorCrop)
{
checkColor = unsafeBitmap.GetPixel(0, 0);
}
// Find Y (Top to bottom)
for (int y = 0; y < bmp.Height && !leave; y++)
{
for (int x = 0; x < bmp.Width; x++)
{
if (unsafeBitmap.GetPixel(x, y) != checkColor)
{
crop.Y = y;
leave = true;
break;
}
}
}
leave = false;
if (!sameColorCrop)
{
checkColor = unsafeBitmap.GetPixel(bmp.Width - 1, 0);
}
// Find Width (Right to left)
for (int x = bmp.Width - 1; x >= 0 && !leave; x--)
{
for (int y = 0; y < bmp.Height; y++)
{
if (unsafeBitmap.GetPixel(x, y) != checkColor)
{
crop.Width = x - crop.X + 1;
leave = true;
break;
}
}
}
leave = false;
if (!sameColorCrop)
{
checkColor = unsafeBitmap.GetPixel(0, bmp.Height - 1);
}
// Find Height (Bottom to top)
for (int y = bmp.Height - 1; y >= 0 && !leave; y--)
{
for (int x = 0; x < bmp.Width; x++)
{
if (unsafeBitmap.GetPixel(x, y) != checkColor)
{
crop.Height = y - crop.Y + 1;
leave = true;
break;
}
}
}
}
return crop;
}
/// <summary>
/// If crop rectangle and source image rectangle is same then null will be returned.
/// After auto crop, source image will be disposed.
/// </summary>
public static Bitmap AutoCropImage(Bitmap bmp, bool sameColorCrop = false)
{
Rectangle source = new Rectangle(0, 0, bmp.Width, bmp.Height);
Rectangle rect = FindAutoCropRectangle(bmp, sameColorCrop);
if (source != rect)
{
Bitmap croppedBitmap = CropBitmap(bmp, rect);
if (croppedBitmap != null)
{
bmp.Dispose();
return croppedBitmap;
}
}
return null;
}
}
}

10
ShareX.ScreenCaptureLib/Shapes/ShapeManager.cs
View file

@ -1430,6 +1430,16 @@ private void ChangeCanvasSize()
}
}
private void AutoCropImage()
{
Bitmap bmp = ImageHelpers.AutoCropImage((Bitmap)Form.Canvas);
if (bmp != null)
{
UpdateCanvas(bmp);
}
}
private void RotateImage(RotateFlipType type)
{
Image img = (Image)Form.Canvas.Clone();

5
ShareX.ScreenCaptureLib/Shapes/ShapeManagerMenu.cs
View file

@ -618,6 +618,11 @@ internal void CreateToolbar()
tsmiCanvasSize.MouseDown += (sender, e) => ChangeCanvasSize();
tsddbImage.DropDownItems.Add(tsmiCanvasSize);
ToolStripMenuItem tsmiAutoCropImage = new ToolStripMenuItem("Auto crop image");
tsmiAutoCropImage.Image = Resources.image_crop;
tsmiAutoCropImage.MouseDown += (sender, e) => AutoCropImage();
tsddbImage.DropDownItems.Add(tsmiAutoCropImage);
tsddbImage.DropDownItems.Add(new ToolStripSeparator());
ToolStripMenuItem tsmiRotate90Clockwise = new ToolStripMenuItem(Resources.ShapeManager_CreateToolbar_Rotate90Clockwise);