/// <summary>
/// 布局命令
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void LayoutCommand_Tapped(object sender, TappedRoutedEventArgs e)
{
var layout_command = sender as GridViewItem;
if (layout_command == LayoutCommand1) //白边 填充
{
_stretch = (_stretch == Stretch.Uniform) ? Stretch.UniformToFill : Stretch.Uniform;
(LayoutCommand1_Panel.Children[1] as TextBlock).Text = (_stretch == Stretch.Uniform) ? "填充" : "白边";
}
else if (layout_command == LayoutCommand2) //黑底 白底
{
_back_color = (_back_color == Colors.White) ? Colors.Black : Colors.White;
(LayoutCommand2_Panel.Children[1] as TextBlock).Text = (_back_color == Colors.White) ? "黑底" : "白底";
}
else if (layout_command == LayoutCommand3) //画布比例
{
_size_mode = (_size_mode + 1) % 3;
var t = "";
if (_size_mode == 0)
{
t = "4:3";
}
else if (_size_mode == 1)
{
t = "3:4";
}
else
{
t = "1:1";
}
(LayoutCommand3_Panel.Children[1] as TextBlock).Text = t;
}
else if (layout_command == LayoutCommand4) //旋转
{
_rotate = (_rotate + 90) % 360;
}
else if (layout_command == LayoutCommand5) //剪切
{
if (_cropUI == null)
{
_cropUI = new CropUI()
{
Top = 20, Left = 20, Height = 100, Width = 100, DrawColor = Colors.Orange
};
}
}
else if (layout_command == LayoutCommand6) //重选底图
{
SelectImage();
}
MainCanvas.Invalidate();
SetCanvas();
}
private void ResetControls()
{
EditionValue.Copy(DefaultValue);
CropUI.ResetCrop();
CropUI.SetThumbAsync(null);
rawImage?.ResetCrop();
SetImageSizeText();
ImageBoxPlain.Visibility = Visibility.Collapsed;
ResetButtonVisibility.Value = false;
BeforeToggle.IsChecked = false;
HideCropUI();
//reset color picker
ColorPickerShadow.Color = ColorPickerHighlight.Color = Colors.White;
}
//Always call in the UI thread
private void EmptyImage()
{
//empty the previous image data
rawImage = null;
ImageBoxPlain.Source = null;
CropUI.SetThumbAsync(null);
//empty the image display
ImageBox.Source = null;
//empty the exif data
History?.Clear();
ExifSource.Source = null;
//empty the histogram
ControlVisibilty.Value = false;
ResetControls();
DisplayImage(null, false); ;
Histo.ClearAsync();
GC.Collect();
}
private async void CropButton_TappedAsync(object sender, Windows.UI.Xaml.Input.TappedRoutedEventArgs e)
{
if (rawImage?.fullSize != null)
{
CropUI.SetThumbAsync(null);
Load.Show();
// Blur(true);
ControlVisibilty.Value = false;
//display the crop UI
CropGrid.Visibility = Visibility.Visible;
//wait for accept or reset pressed
uint h, w;
if (EditionValue.Rotation == 1 || EditionValue.Rotation == 3)
{
h = rawImage.preview.UncroppedDim.width;
w = rawImage.preview.UncroppedDim.height;
}
else
{
h = rawImage.preview.UncroppedDim.height;
w = rawImage.preview.UncroppedDim.width;
}
double factor;
if (w > h)
{
factor = ImageDisplay.ActualWidth / (w);
}
else
{
factor = ImageDisplay.ActualHeight / (h + 160);
}
CropUI.SetSize((int)(w * factor * 0.7), (int)(h * factor * 0.7), EditionValue.Rotation);
ImageComponent<ushort> img = new ImageComponent<ushort>(rawImage.preview) { offset = new Point2D(), dim = new Point2D(rawImage.preview.UncroppedDim) };
rawImage.preview.dim = new Point2D(rawImage.preview.UncroppedDim);
//create a preview of the image
SoftwareBitmap image = await Task.Run(() =>
{
return ApplyImageEffect8bitsNoHistoAsync(img, EditionValue);
});
//display the preview
CropUI.SetThumbAsync(image);
}
}