/// <summary>
/// Given the root to an element tree, synthesize a "yellow box" bitmap to describe it
/// </summary>
/// <param name="rootElement">The root element for the tree</param>
/// <returns>A bitmap representing the element tee (normalized to having the app window at location (0,0)</returns>
internal static Bitmap SynthesizeBitmapFromElements(this IA11yElement rootElement)
{
const int penWidth = 4; // This is the same width as our highlighter
if (rootElement == null)
{
return(null);
}
Rectangle rootBoundingRectangle = rootElement.BoundingRectangle;
// Synthesize the bitmap
bool isHighContrast = HighContrast.Create().IsOn;
Color brushColor = isHighContrast ? SystemColors.Window : Color.DarkGray;
Color penColor = isHighContrast ? SystemColors.WindowFrame : Color.Yellow;
Bitmap bitmap = new Bitmap(rootBoundingRectangle.Width, rootBoundingRectangle.Height);
using (Graphics graphics = Graphics.FromImage(bitmap))
using (SolidBrush brush = new SolidBrush(brushColor))
using (Pen pen = new Pen(penColor, penWidth))
{
graphics.FillRectangle(brush, 0, 0, rootBoundingRectangle.Width, rootBoundingRectangle.Height);
graphics.TranslateTransform(-rootBoundingRectangle.Left, -rootBoundingRectangle.Top);
AddBoundingRectsRecursively(graphics, pen, rootElement);
}
return(bitmap);
}
public async Task <object> TurnOffHighContrast(dynamic input)
{
var highContrast = new HighContrast();
highContrast.IsHighContrastOn = false;
highContrast.Apply();
return(true);
}
public async Task <object> TurnOnHighContrast(dynamic input)
{
var highContrast = new HighContrast();
highContrast.IsHighContrastOn = true;
highContrast.Theme = HighContrast.ColorSchemes.HighContrastBlack;
highContrast.Apply();
return(true);
}
/// <summary>
/// A previous marshalling bug caused crashing if multiple HighContrasts were created in rapid succession
/// </summary>
private void TestMultipleInstantionations()
{
Logger.Debug("Entering TestMultipleInstantionations");
var hc3 = new HighContrast();
for (int i = 0; i < 10; i++)
{
Logger.Debug("creating HighContrast #" + i.ToString());
new HighContrast();
}
}
public void PollHighConttrastUntilSettingIs(bool until)
{
Logger.Debug("Entering PollHighConttrastUntilSettingIs");
HighContrast hc = new HighContrast();
do
{
hc = new HighContrast();
Logger.Debug(string.Format("HighContrast setting: {0}", hc.IsHighContrastOn));
} while (until != hc.IsHighContrastOn);
}
public async void Update_ColorOnPreview(int index, BandTheme _BandTheme)
{
switch (index)
{
case -1:
try
{
while (await ContentIsLoaded() == false)
{
await Task.Delay(100);
System.Diagnostics.Debug.WriteLine("Task Delayed");
}
Base.Set_Color(_BandTheme);
HighContrast.Set_Color(_BandTheme);
LowLight.Set_Color(_BandTheme);
Hightlight.Set_Color(_BandTheme);
Muted.Set_Color(_BandTheme);
Secondary.Set_Color(_BandTheme);
} catch (Exception e)
{
System.Diagnostics.Debug.Write(e);
}
break;
case 0:
Base.Set_Color(_BandTheme);
break;
case 1:
HighContrast.Set_Color(_BandTheme);
break;
case 2:
LowLight.Set_Color(_BandTheme);
break;
case 3:
Hightlight.Set_Color(_BandTheme);
break;
case 4:
Muted.Set_Color(_BandTheme);
break;
case 5:
Secondary.Set_Color(_BandTheme);
break;
}
}
private void TestEmptyStringTheme()
{
var highContrast = new HighContrast();
highContrast.Theme = HighContrast.ColorSchemes.HighContrastBlack;
highContrast.Apply();
Assert(new HighContrast().Theme == HighContrast.ColorSchemes.HighContrastBlack);
highContrast.Theme = HighContrast.ColorSchemes.HighContrastWhite;
highContrast.Apply();
Assert(new HighContrast().Theme == HighContrast.ColorSchemes.HighContrastWhite);
highContrast.Theme = HighContrast.ColorSchemes.Default; // value of Default is empty string
highContrast.Apply();
Assert(new HighContrast().Theme != HighContrast.ColorSchemes.Default); // This will NOT equal because the Theme value is still HighContrastWhite.
}
/*
* private static void TurnOnDefaultHighContrast()
* {
* var highContrast = new HighContrast();
* highContrast.IsHighContrastOn = true;
* highContrast.Theme = HighContrast.ColorSchemes.HighContrastBlack;
* highContrast.Apply();
* }
*/
private void ToggleHighContrast()
{
Logger.Debug("Entering ToggleHighContrast");
HighContrast highContrast = new HighContrast();
highContrast.IsHighContrastOn = true;
highContrast.Theme = HighContrast.ColorSchemes.HighContrastBlack;
highContrast.Apply();
Logger.Debug("High contrast should be ON: HighContrastBlack");
Assert(new HighContrast().IsHighContrastOn == true);
PollHighConttrastUntilSettingIs(true);
WaitForContrastChange();
highContrast.IsHighContrastOn = false;
highContrast.Apply();
PollHighConttrastUntilSettingIs(false);
Assert(new HighContrast().IsHighContrastOn == false);
Logger.Debug("High contrast should be OFF");
WaitForContrastChange();
highContrast.IsHighContrastOn = true;
highContrast.Theme = HighContrast.ColorSchemes.HighContrastWhite;
highContrast.Apply();
PollHighConttrastUntilSettingIs(true);
Assert(new HighContrast().IsHighContrastOn);
Logger.Debug("High contrast should be ON: HighContrastWhite");
WaitForContrastChange();
highContrast.IsHighContrastOn = false;
highContrast.Apply();
PollHighConttrastUntilSettingIs(false);
Assert(new HighContrast().IsHighContrastOn == false);
Logger.Debug("High contrast should be OFF");
WaitForContrastChange();
}
