public void Run(IBackgroundTaskInstance taskInstance)
{
//
// TODO: Insert code to perform background work
//
// If you start any asynchronous methods here, prevent the task
// from closing prematurely by using BackgroundTaskDeferral as
// described in http://aka.ms/backgroundtaskdeferral
//
_deferral = taskInstance.GetDeferral();
Init().Wait();
CanvasTextFormat txtFmt1 = new CanvasTextFormat
{
FontSize = 28,
FontFamily = "Old English Five",
LineSpacingMode = CanvasLineSpacingMode.Proportional,
LineSpacingBaseline = 0.8f
};
CanvasTextFormat txtFmt2 = new CanvasTextFormat
{
FontSize = 18,
FontFamily = "Segoe UI Emoji",
LineSpacingMode = CanvasLineSpacingMode.Proportional,
LineSpacingBaseline = 0.8f
};
//display on spi
if (_displaySpi.State == SSD1603.States.Ready)
{
//draw
using (CanvasDrawingSession ds = _displaySpi.Render.CreateDrawingSession())
{
ds.Clear(SSD1603.BackgroundColor);
ds.DrawText("Hello", 0, 0, SSD1603.ForeColor, txtFmt1);
}
_displaySpi.Display();
}
//display on i2c
if (_displayI2c.State == SSD1603.States.Ready)
{
//draw
using (CanvasDrawingSession ds = _displayI2c.Render.CreateDrawingSession())
{
ds.Antialiasing = CanvasAntialiasing.Aliased;
ds.TextAntialiasing = CanvasTextAntialiasing.Aliased;
//REG ADD "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts" /v "Astronaut III" /t REG_SZ /d "astronautiii.ttf"
ds.Clear(SSD1603.BackgroundColor);
ds.DrawText("\U0001F600\U00002603\U0001F341\U0001F50D", 0, 0, SSD1603.ForeColor, txtFmt2);
}
_displayI2c.Display();
}
}
private void ShowEmoji(int idx, string emoji)
{
SSD1603 display = idx == 0 ? _displaySpi : _displayI2c;
CanvasTextFormat fmt = idx == 0 ? _fmtBg : _fmtSm;
if (display != null && display.State == SSD1603.States.Ready)
{
//draw
using (CanvasDrawingSession ds = display.Render.CreateDrawingSession())
{
ds.Antialiasing = CanvasAntialiasing.Aliased;
ds.TextAntialiasing = CanvasTextAntialiasing.Aliased;
ds.Clear(SSD1603.BackgroundColor);
ds.DrawText(emoji, 0, 0, SSD1603.ForeColor, fmt);
}
Debug.WriteLine("display " + emoji);
display.Display();
}
}