private async void SelectButton_Click(object sender, RoutedEventArgs e)
{
var item = (ListBoxItem)DisplaysListBox.SelectedValue;
if (item != null)
{
SelectButton.IsEnabled = false;
var name = (string)item.Content;
var deviceId = (string)item.Tag;
using (ClaimedLineDisplay lineDisplay = await ClaimedLineDisplay.FromIdAsync(deviceId))
{
if (lineDisplay != null)
{
await lineDisplay.DefaultWindow.TryClearTextAsync();
rootPage.NotifyUser($"Selected: {name}", NotifyType.StatusMessage);
// Save this device ID for other scenarios.
rootPage.LineDisplayId = deviceId;
}
else
{
rootPage.NotifyUser("Unable to claim the Line Display", NotifyType.ErrorMessage);
}
}
SelectButton.IsEnabled = true;
}
}
private async Task InitializeAsync()
{
lineDisplay = await rootPage.ClaimScenarioLineDisplayAsync();
BlinkCheckBox.IsEnabled = (lineDisplay != null) && (lineDisplay.Capabilities.CanBlink != LineDisplayTextAttributeGranularity.NotSupported);
DisplayTextButton.IsEnabled = (lineDisplay != null);
}
private async Task InitializeAsync()
{
ResetButton.IsEnabled = false;
SupportedGlyphsComboBox.Items.Clear();
lineDisplay = await rootPage.ClaimScenarioLineDisplayAsync();
if ((lineDisplay != null) && lineDisplay.Capabilities.CanDisplayCustomGlyphs)
{
string sampleText = "ABC";
foreach (uint glyphCode in lineDisplay.CustomGlyphs.SupportedGlyphCodes)
{
string glyphString = Char.ConvertFromUtf32((int)glyphCode);
SupportedGlyphsComboBox.Items.Add(new ComboBoxItem {
Content = $"Code {glyphCode} (UTF-32 '{glyphString}')", Tag = glyphCode
});
if (sampleText.Length < 10)
{
sampleText += glyphString;
}
}
if (SupportedGlyphsComboBox.Items.Count > 0)
{
SupportedGlyphsComboBox.SelectedIndex = 0;
}
Size glyphSize = lineDisplay.CustomGlyphs.SizeInPixels;
glyphBuffer = CreateSolidGlyphBuffer((int)glyphSize.Width, (int)glyphSize.Height);
await lineDisplay.DefaultWindow.TryDisplayTextAsync(sampleText);
}
ResetButton.IsEnabled = true;
}
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
horizontalScrollableWindow?.Dispose();
horizontalScrollableWindow = null;
verticalScrollableWindow?.Dispose();
verticalScrollableWindow = null;
lineDisplay?.Dispose();
lineDisplay = null;
}
private async Task InitializeAsync()
{
lineDisplay = await rootPage.ClaimScenarioLineDisplayAsync();
maxWindows = (lineDisplay == null) ? 0 : lineDisplay.Capabilities.SupportedWindows;
if (maxWindows >= 1)
{
// Create an entry to represent the default window.
WindowList.Add(new WindowInfo(lineDisplay.DefaultWindow, nextWindowId));
nextWindowId++;
}
}
private async Task InitializeAsync()
{
UpdateButton.IsEnabled = false;
DisplayTextButton.IsEnabled = false;
ResetButton.IsEnabled = false;
CursorTypeComboBox.Items.Clear();
lineDisplay = await rootPage.ClaimScenarioLineDisplayAsync();
CursorTypeComboBox.IsEnabled = (lineDisplay != null) && lineDisplay.DefaultWindow.Cursor.CanCustomize;
if (CursorTypeComboBox.IsEnabled)
{
if (lineDisplay.DefaultWindow.Cursor.IsBlockSupported)
{
CursorTypeComboBox.Items.Add(LineDisplayCursorType.Block);
}
if (lineDisplay.DefaultWindow.Cursor.IsHalfBlockSupported)
{
CursorTypeComboBox.Items.Add(LineDisplayCursorType.HalfBlock);
}
if (lineDisplay.DefaultWindow.Cursor.IsOtherSupported)
{
CursorTypeComboBox.Items.Add(LineDisplayCursorType.Other);
}
if (lineDisplay.DefaultWindow.Cursor.IsReverseSupported)
{
CursorTypeComboBox.Items.Add(LineDisplayCursorType.Reverse);
}
if (lineDisplay.DefaultWindow.Cursor.IsUnderlineSupported)
{
CursorTypeComboBox.Items.Add(LineDisplayCursorType.Underline);
}
if (CursorTypeComboBox.Items.Count > 0)
{
CursorTypeComboBox.SelectedIndex = 0;
}
}
IsAutoAdvanceEnabledCheckbox.IsEnabled = (lineDisplay != null);
IsBlinkEnabledCheckbox.IsEnabled = (lineDisplay != null) && lineDisplay.DefaultWindow.Cursor.IsBlinkSupported;
SetCursorPositionCheckbox.IsEnabled = (lineDisplay != null);
UpdateButton.IsEnabled = (lineDisplay != null);
DisplayTextButton.IsEnabled = (lineDisplay != null);
ResetButton.IsEnabled = true;
}
private async void DisplayTextButton_Click(object sender, RoutedEventArgs e)
{
string text = "Hello from UWP";
using (ClaimedLineDisplay lineDisplay = await ClaimedLineDisplay.FromIdAsync(rootPage.LineDisplayId))
{
if (lineDisplay != null)
{
var position = new Point(0, 0);
if (CenterCheckBox.IsChecked.Value)
{
var length = text.Length;
if (length < lineDisplay.DefaultWindow.SizeInCharacters.Width)
{
position.X = ((int)lineDisplay.DefaultWindow.SizeInCharacters.Width - length) / 2;
}
}
LineDisplayTextAttribute attribute = LineDisplayTextAttribute.Normal;
// If blinking is requested, verify that the device supports blinking.
if (BlinkCheckBox.IsChecked.Value)
{
if (lineDisplay.Capabilities.CanBlink == LineDisplayTextAttributeGranularity.NotSupported)
{
BlinkNotSupportedText.Visibility = Visibility.Visible;
}
else
{
// Device supports blinking.
attribute = LineDisplayTextAttribute.Blink;
}
}
if (await lineDisplay.DefaultWindow.TryClearTextAsync() &&
await lineDisplay.DefaultWindow.TryDisplayTextAsync(text, attribute, position))
{
rootPage.NotifyUser("Text displayed successfully", NotifyType.StatusMessage);
}
else
{
// We probably lost our claim.
rootPage.NotifyUser("Unable to display text", NotifyType.ErrorMessage);
}
}
else
{
rootPage.NotifyUser("Unable to claim the Line Display", NotifyType.ErrorMessage);
}
}
}
public async Task <ClaimedLineDisplay> ClaimScenarioLineDisplayAsync()
{
ClaimedLineDisplay lineDisplay = null;
if (String.IsNullOrEmpty(LineDisplayId))
{
NotifyUser("You must use scenario 1 to select a line display", NotifyType.ErrorMessage);
}
else
{
lineDisplay = await ClaimedLineDisplay.FromIdAsync(LineDisplayId);
if (lineDisplay == null)
{
NotifyUser("Unable to claim selected LineDisplay from id.", NotifyType.ErrorMessage);
}
}
return(lineDisplay);
}
private async Task InitializeAsync()
{
lineDisplay = await rootPage.ClaimScenarioLineDisplayAsync();
BlinkRateSlider.IsEnabled = (lineDisplay != null) && lineDisplay.Capabilities.CanChangeBlinkRate;
BrightnessSlider.IsEnabled = (lineDisplay != null) && lineDisplay.Capabilities.IsBrightnessSupported;
SupportedScreenSizesComboBox.IsEnabled = (lineDisplay != null) && lineDisplay.Capabilities.CanChangeScreenSize;
if (SupportedScreenSizesComboBox.IsEnabled)
{
foreach (Size screenSize in lineDisplay.SupportedScreenSizesInCharacters)
{
SupportedScreenSizesComboBox.Items.Add(new ComboBoxItem {
Content = $"{screenSize.Width} x {screenSize.Height}", Tag = screenSize
});
}
if (SupportedScreenSizesComboBox.Items.Count > 0)
{
SupportedScreenSizesComboBox.SelectedIndex = 0;
}
}
CharacterSetMappingEnabledCheckbox.IsEnabled = (lineDisplay != null) && lineDisplay.Capabilities.CanMapCharacterSets;
UpdateButton.IsEnabled = (lineDisplay != null);
if (UpdateButton.IsEnabled)
{
SetValuesFromLineDisplay();
if (lineDisplay.Capabilities.CanBlink == LineDisplayTextAttributeGranularity.NotSupported)
{
await lineDisplay.DefaultWindow.TryDisplayTextAsync("Regular Text");
}
else
{
await lineDisplay.DefaultWindow.TryDisplayTextAsync("Blinking Text", LineDisplayTextAttribute.Blink);
}
}
}
private async Task InitializeAsync()
{
lineDisplay = await rootPage.ClaimScenarioLineDisplayAsync();
if (lineDisplay != null)
{
Size screenSize = lineDisplay.GetAttributes().ScreenSizeInCharacters;
int windowCount = 1;
if (lineDisplay.Capabilities.IsHorizontalMarqueeSupported && (windowCount < lineDisplay.Capabilities.SupportedWindows))
{
// Create a horizontal scrollable window by creating a window
// whose width is wider than the viewport.
horizontalScrollableWindow = await lineDisplay.TryCreateWindowAsync(
new Rect()
{
X = 0,
Y = 0,
Width = screenSize.Width,
Height = screenSize.Height
},
new Size()
{
Width = screenSize.Width * 2,
Height = screenSize.Height
});
if (horizontalScrollableWindow != null)
{
windowCount++;
ScrollDirectionComboBox.Items.Add(LineDisplayScrollDirection.Left);
ScrollDirectionComboBox.Items.Add(LineDisplayScrollDirection.Right);
}
}
if (lineDisplay.Capabilities.IsVerticalMarqueeSupported && (windowCount < lineDisplay.Capabilities.SupportedWindows))
{
// Create a vertical scrollable window by creating a window
// whose height is taller than the viewport.
verticalScrollableWindow = await lineDisplay.TryCreateWindowAsync(
new Rect()
{
X = 0,
Y = 0,
Width = screenSize.Width,
Height = screenSize.Height
},
new Size()
{
Width = screenSize.Width,
Height = screenSize.Height * 2
});
if (verticalScrollableWindow != null)
{
windowCount++;
ScrollDirectionComboBox.Items.Add(LineDisplayScrollDirection.Up);
ScrollDirectionComboBox.Items.Add(LineDisplayScrollDirection.Down);
}
}
}
if (ScrollDirectionComboBox.Items.Count > 0)
{
ScrollDirectionComboBox.SelectedIndex = 0;
StartScrollingButton.IsEnabled = true;
StopScrollingButton.IsEnabled = true;
}
}
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
lineDisplay?.Dispose();
lineDisplay = null;
}