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Bugfix when try to crop the half or the hole image

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This commit is contained in:
Christian Schulz 2022-03-03 23:45:31 +01:00
commit 9b8ab7ad2b
2 changed files with 69 additions and 23 deletions
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90
src/Greenshot.Editor/Drawing/Surface.cs
View file

@ -981,7 +981,7 @@ namespace Greenshot.Editor.Drawing
cropRectangle = ImageHelper.FindAutoCropRectangle(tmpImage, conf.AutoCropDifference);
}
if (!IsCropPossible(ref cropRectangle))
if (!IsCropPossible(ref cropRectangle, CropContainer.CropMode.AutoCrop))
{
return false;
}
@ -1060,11 +1060,13 @@ namespace Greenshot.Editor.Drawing
/// <summary>
/// check if a crop is possible
/// </summary>
/// <param name="cropRectangle"></param>
/// <param name="cropRectangle">Rectangle adapted to the dimensions of the image</param>
/// <param name="cropMode"></param>
/// <returns>true if this is possible</returns>
public bool IsCropPossible(ref Rectangle cropRectangle)
public bool IsCropPossible(ref Rectangle cropRectangle, CropContainer.CropMode cropMode)
{
cropRectangle = GuiRectangle.GetGuiRectangle(cropRectangle.Left, cropRectangle.Top, cropRectangle.Width, cropRectangle.Height);
//Fitting the rectangle to the dimensions of the image
if (cropRectangle.Left < 0)
{
cropRectangle = new Rectangle(0, cropRectangle.Top, cropRectangle.Width + cropRectangle.Left, cropRectangle.Height);
@ -1085,6 +1087,21 @@ namespace Greenshot.Editor.Drawing
cropRectangle = new Rectangle(cropRectangle.Left, cropRectangle.Top, cropRectangle.Width, Image.Height - cropRectangle.Top);
}
// special condition for vertical
if(cropMode == CropContainer.CropMode.Vertical && cropRectangle.Width == Image.Width)
{
//crop out the hole imgage is not allowed
return false;
}
// special condition for vertical
if (cropMode == CropContainer.CropMode.Horizontal && cropRectangle.Height == Image.Height)
{
//crop out the hole imgage is not allowed
return false;
}
//condition for all other crop modes
if (cropRectangle.Height > 0 && cropRectangle.Width > 0)
{
return true;
@ -1188,7 +1205,7 @@ namespace Greenshot.Editor.Drawing
/// <returns></returns>
public bool ApplyCrop(Rectangle cropRectangle)
{
if (!IsCropPossible(ref cropRectangle)) return false;
if (!IsCropPossible(ref cropRectangle, CropContainer.CropMode.Default)) return false;
Rectangle imageRectangle = new Rectangle(Point.Empty, Image.Size);
Bitmap tmpImage;
@ -1231,16 +1248,28 @@ namespace Greenshot.Editor.Drawing
/// <returns></returns>
public bool ApplyHorizontalCrop(Rectangle cropRectangle)
{
if (!IsCropPossible(ref cropRectangle)) return false;
if (!IsCropPossible(ref cropRectangle, CropContainer.CropMode.Horizontal)) return false;
Rectangle imageRectangle = new Rectangle(Point.Empty, Image.Size);
Bitmap tmpNewimage, tmpImageTop, tmpImageBottom;
var imageRectangle = new Rectangle(Point.Empty, Image.Size);
var topRectangle = new Rectangle(0, 0, Image.Size.Width, cropRectangle.Top);
var bottomRectangle = new Rectangle(0, cropRectangle.Top + cropRectangle.Height, Image.Size.Width, Image.Size.Height - cropRectangle.Top - cropRectangle.Height);
Bitmap tmpNewimage;
List<Bitmap> imageParts = new List<Bitmap>();
// Make sure we have information, this this fails
try
{
tmpNewimage = new Bitmap(Image.Size.Width, Image.Size.Height - cropRectangle.Height);
tmpImageTop = ImageHelper.CloneArea(Image, new Rectangle(0, 0, Image.Size.Width, cropRectangle.Top), PixelFormat.DontCare);
tmpImageBottom = ImageHelper.CloneArea(Image, new Rectangle(0, cropRectangle.Top + cropRectangle.Height, Image.Size.Width, Image.Size.Height - cropRectangle.Top - cropRectangle.Height), PixelFormat.DontCare);
if (topRectangle.Height > 0)
{
imageParts.Add( ImageHelper.CloneArea(Image, topRectangle, PixelFormat.DontCare));
}
if (bottomRectangle.Height > 0)
{
imageParts.Add(ImageHelper.CloneArea(Image, bottomRectangle, PixelFormat.DontCare));
}
}
catch (Exception ex)
{
@ -1251,11 +1280,14 @@ namespace Greenshot.Editor.Drawing
throw;
}
using Graphics g = Graphics.FromImage(tmpNewimage);
g.DrawImage(tmpImageTop, new Point(0, 0));
g.DrawImage(tmpImageBottom, new Point(0, tmpImageTop.Height));
tmpImageTop.Dispose();
tmpImageBottom.Dispose();
var insertPositionTop = 0;
foreach (var image in imageParts)
{
g.DrawImage(image, new Point(0, insertPositionTop));
insertPositionTop += image.Height;
image.Dispose();
}
Matrix matrix = new Matrix();
matrix.Translate(0, -(cropRectangle.Top + cropRectangle.Height), MatrixOrder.Append);
@ -1283,17 +1315,27 @@ namespace Greenshot.Editor.Drawing
/// <returns></returns>
public bool ApplyVerticalCrop(Rectangle cropRectangle)
{
if (!IsCropPossible(ref cropRectangle)) return false;
if (!IsCropPossible(ref cropRectangle, CropContainer.CropMode.Vertical)) return false;
Rectangle imageRectangle = new Rectangle(Point.Empty, Image.Size);
Bitmap tmpNewimage, tmpImageLeft, tmpImageRight;
var imageRectangle = new Rectangle(Point.Empty, Image.Size);
var leftRectangle = new Rectangle(0, 0, cropRectangle.Left, Image.Size.Height);
var rightRectangle = new Rectangle(cropRectangle.Left + cropRectangle.Width, 0, Image.Size.Width - cropRectangle.Width - cropRectangle.Left, Image.Size.Height);
Bitmap tmpNewimage;
List<Bitmap> imageParts = new List<Bitmap>();
// Make sure we have information, this this fails
try
{
tmpNewimage = new Bitmap(Image.Size.Width - cropRectangle.Width, Image.Size.Height);
tmpImageLeft = ImageHelper.CloneArea(Image, new Rectangle(0, 0, cropRectangle.Left, Image.Size.Height), PixelFormat.DontCare);
tmpImageRight = ImageHelper.CloneArea(Image, new Rectangle(cropRectangle.Left + cropRectangle.Width, 0, Image.Size.Width - cropRectangle.Width - cropRectangle.Left, Image.Size.Height), PixelFormat.DontCare);
if (leftRectangle.Width > 0)
{
imageParts.Add(ImageHelper.CloneArea(Image, leftRectangle, PixelFormat.DontCare));
}
if (rightRectangle.Width > 0)
{
imageParts.Add(ImageHelper.CloneArea(Image, rightRectangle, PixelFormat.DontCare));
}
}
catch (Exception ex)
{
@ -1304,11 +1346,15 @@ namespace Greenshot.Editor.Drawing
throw;
}
using Graphics g = Graphics.FromImage(tmpNewimage);
g.DrawImage(tmpImageLeft, new Point(0, 0));
g.DrawImage(tmpImageRight, new Point(tmpImageLeft.Width, 0));
tmpImageLeft.Dispose();
tmpImageRight.Dispose();
var insertPositionLeft = 0;
foreach (var image in imageParts)
{
g.DrawImage(image, new Point(insertPositionLeft, 0));
insertPositionLeft += image.Width;
image.Dispose();
}
Matrix matrix = new Matrix();
matrix.Translate(-cropRectangle.Left - cropRectangle.Width, 0, MatrixOrder.Append);

2
src/Greenshot.Editor/Forms/ImageEditorForm.cs
View file

@ -1710,7 +1710,7 @@ namespace Greenshot.Editor.Forms
cropRectangle = ImageHelper.FindAutoCropRectangle(tmpImage, coreConfiguration.AutoCropDifference);
}
if (_surface.IsCropPossible(ref cropRectangle))
if (_surface.IsCropPossible(ref cropRectangle, CropContainer.CropMode.AutoCrop))
{
_surface.ApplyCrop(cropRectangle);
UpdateUndoRedoSurfaceDependencies();