| public WithAlpha ( double alpha ) : Image | ||
| alpha | double | Alpha to apply |
| return | Image | |
public Image WithAlpha(double alpha)
{
return new Image (this) {
requestedSize = requestedSize,
requestedAlpha = alpha
};
}
public async void RefreshTiles()
{
// Cancel previous loads
if (_tokenSource != null)
{
_tokenSource.Cancel();
while (_tokenSource != null)
{
await Task.Delay(1);
}
}
Spinner spinner = null;
Application.Invoke(() => {
// Clear controls
_buttons.Clear();
ClearTiles();
Content =
spinner = new Spinner {
Animate = true,
MinHeight = 50,
MinWidth = 50
};
});
while (spinner == null)
{
await Task.Delay(5);
}
_buttonsPerRow = CalculateButtonsPerRow((float)Size.Width);
var i = 0;
_tokenSource = new CancellationTokenSource();
try {
var tiles = await LoadTiles(_tokenSource.Token);
Application.Invoke(() => {
foreach (var tile in tiles)
{
if (tile == null)
{
continue;
}
if (i >= _buttonsPerRow)
{
PushNewRow();
i = 0;
}
try {
Xwt.Drawing.Image image = tile.Image?.ToXwtImage()?.ScaleToSize(100);
Widget widget = null;
if (ParkitectNexus.Data.Utilities.OperatingSystem.Detect() == SupportedOperatingSystem.Linux)
{
if (image != null)
{
Image lighterImage = image.WithAlpha(.7f);
var clickableImage = new ImageView(image);
clickableImage.ButtonPressed += (sender, args) => tile.ClickAction();
clickableImage.MouseEntered += (object sender, EventArgs e) => {
((ImageView)sender).Image = lighterImage;
((Widget)sender).BackgroundColor = Color.FromBytes(255, 255, 255);
};
clickableImage.MouseExited += (object sender, EventArgs e) => {
((ImageView)sender).Image = image;
((Widget)sender).BackgroundColor = tile.BackgroundColor;
};
widget = clickableImage;
}
else
{
var label = new Label(tile.Text);
label.ButtonPressed += (sender, args) => tile.ClickAction();
label.Wrap = WrapMode.Word;
label.TextAlignment = Alignment.Center;
label.MouseEntered += (object sender, EventArgs e) => {
((Widget)sender).BackgroundColor = Color.FromBytes(255, 255, 255);
};
label.MouseExited += (object sender, EventArgs e) => {
((Widget)sender).BackgroundColor = tile.BackgroundColor;
};
widget = label;
}
}
else
{
var button = new Button(image)
{
Label = tile.Image == null ? tile.Text : null,
TooltipText = tile.Text,
Style = ButtonStyle.Borderless,
BackgroundColor = tile.BackgroundColor,
ImagePosition = ContentPosition.Center
};
Image lighterImage = image.WithAlpha(.7f);
button.MouseEntered += (object sender, EventArgs e) => {
((Button)sender).Image = lighterImage;
((Widget)sender).BackgroundColor = Color.FromBytes(255, 255, 255);
};
button.MouseExited += (object sender, EventArgs e) => {
((Button)sender).Image = image;
((Widget)sender).BackgroundColor = tile.BackgroundColor;
};
button.Clicked += (sender, args) => tile.ClickAction();
widget = button;
}
widget.WidthRequest = 100;
widget.HeightRequest = 100;
widget.MinWidth = 0;
widget.BackgroundColor = tile.BackgroundColor;
_buttons.Add(widget);
_rows.Peek().PackStart(widget);
i++;
} catch (Exception e) {
_log.WriteLine("Failed to convert Tile object to UI");
_log.WriteException(e);
}
}
Content = _box;
});
} catch (TaskCanceledException) {
} catch (OperationCanceledException) {
} finally {
_tokenSource?.Dispose();
_tokenSource = null;
}
}