protected void LoadImageIntoPictureTrimmer(bool resetSelection)
{
// Pre-process the image
ImageProcessingJob job = this.GetImagePreProcessingJob();
using (System.Drawing.Bitmap preProcessedImage = job.GetProcessedImage(SourceImageFileName))
{
// Backup the previous userState
PictureTrimmerUserState previousUserState = null;
if (this.InlinePictureTrimmer1.ImageLoaded)
{
previousUserState = this.InlinePictureTrimmer1.UserState;
}
// Load the pre-processed image into the PictureTrimmer control
this.InlinePictureTrimmer1.LoadImage(preProcessedImage, new FreeCropConstraint(null, 600, null, 600));
if (previousUserState != null)
{
if (resetSelection)
{
// Re-calculate the cropping rectangle
previousUserState.Value.ImageSelection.Crop.Rectangle = null;
// Re-center the image
previousUserState.UIParams.PictureScrollH = null;
previousUserState.UIParams.PictureScrollV = null;
}
// Restore the previous user state
this.InlinePictureTrimmer1.UserState = previousUserState;
}
}
}
protected void btnServerSideSetUserState_Click(object sender, EventArgs e)
{
// Set some random values
Random rnd = new Random();
PictureTrimmerUserState userState = this.InlinePictureTrimmer1.UserState;
// Set the resize factor
userState.Value.ImageSelection.Transformation.ResizeFactor = rnd.Next(50, 150);
// Horizontal flip
userState.Value.ImageSelection.Transformation.FlipH = rnd.Next(0, 4) < 2;
// Set the rectangle
int x = rnd.Next(-100, 300);
int y = rnd.Next(-100, 300);
int w = rnd.Next(50, 400);
int h = rnd.Next(50, 400);
userState.Value.ImageSelection.Crop.Rectangle = new Rectangle(x, y, w, h);
// Set the Saturation
userState.Value.ImageAdjustments.Saturation = rnd.Next(-100, 100);
// Auto-zoom and auto-center the view
userState.UIParams.ZoomFactor = null;
userState.UIParams.PictureScrollH = null;
userState.UIParams.PictureScrollV = null;
this.DisplayUserState();
}
protected void DisplayUserState()
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
string crlf = "\r\n";
#region UserState
PictureTrimmerUserState userState = this.InlinePictureTrimmer1.UserState;
#region Value
PictureTrimmerValue value = userState.Value;
#region ImageSelection
ImageSelection imageSelection = value.ImageSelection;
#region ImageTransformation
ImageTransformation imageTransformation = imageSelection.Transformation;
sb.Length = 0;
sb.Append("Resize factor:" + imageTransformation.ResizeFactor.ToString(CultureInfo.InvariantCulture) + "%" + crlf);
sb.Append("Rotation angle:" + imageTransformation.RotationAngle.ToString(CultureInfo.InvariantCulture) + "°" + crlf);
sb.Append("Flip horizontal:" + (imageTransformation.FlipH ? "yes" : "no") + crlf);
sb.Append("Flip vertical:" + (imageTransformation.FlipV ? "yes" : "no") + crlf);
this.txtUserState_Value_ImageSelection_Transformation.Text = sb.ToString();
#endregion
#region ImageCrop
ImageCrop imageCrop = imageSelection.Crop;
sb.Length = 0;
sb.Append("Rectangle:" + (imageCrop.Rectangle.HasValue ? imageCrop.Rectangle.Value.ToString() : "Auto") + crlf);
// Note: in this example imageCrop.CanvasColor is not displayed.
this.txtUserState_Value_ImageSelection_Crop.Text = sb.ToString();
#endregion
#endregion
#region ImageAdjustments
ImageAdjustmentsFilter imageAdjustments = value.ImageAdjustments;
sb.Length = 0;
sb.Append("Brightness:" + imageAdjustments.Brightness.ToString(CultureInfo.InvariantCulture) + crlf);
sb.Append("Contrast:" + imageAdjustments.Contrast.ToString(CultureInfo.InvariantCulture) + crlf);
sb.Append("Hue:" + imageAdjustments.Hue.ToString(CultureInfo.InvariantCulture) + "°" + crlf);
sb.Append("Saturation:" + imageAdjustments.Saturation.ToString(CultureInfo.InvariantCulture) + crlf);
this.txtUserState_Value_ImageAdjustments.Text = sb.ToString();
#endregion
// Note: In this example value.ImageBackColorApplyMode is not displayed.
#endregion
#region UIParams
PictureTrimmerUIParams uiParams = userState.UIParams;
sb.Length = 0;
sb.Append("Zoom factor:" + (uiParams.ZoomFactor.HasValue ? uiParams.ZoomFactor.Value.ToString(CultureInfo.InvariantCulture) + "%" : "auto") + crlf);
sb.Append("Picture scroll horizontal:" + (uiParams.PictureScrollH.HasValue ? uiParams.PictureScrollH.Value.ToString(CultureInfo.InvariantCulture) : "auto") + crlf);
sb.Append("Picture scroll vertical:" + (uiParams.PictureScrollH.HasValue ? uiParams.PictureScrollV.Value.ToString(CultureInfo.InvariantCulture) : "auto") + crlf);
sb.Append("Command panel scroll vertical:" + uiParams.CommandPanelScrollV.ToString(CultureInfo.InvariantCulture) + crlf);
this.txtUserState_UIParams.Text = sb.ToString();
#endregion
#endregion
}
