void SwizzleNSApplicationAccessibilitySetter()
{
// Swizzle accessibilitySetValue:forAttribute: so that we can detect when VoiceOver gets enabled
var nsApplicationClassHandle = Class.GetHandle("NSApplication");
// This happens if GtkMac is loaded before XamMac
if (nsApplicationClassHandle == IntPtr.Zero)
{
return;
}
var accessibilitySetValueForAttributeSelector = Selector.GetHandle("accessibilitySetValue:forAttribute:");
var accessibilitySetValueForAttributeMethod = class_getInstanceMethod(nsApplicationClassHandle, accessibilitySetValueForAttributeSelector);
originalAccessibilitySetValueForAttributeMethod = method_getImplementation(accessibilitySetValueForAttributeMethod);
var block = new BlockLiteral();
SwizzledAccessibilitySetValueForAttributeDelegate d = accessibilitySetValueForAttribute;
block.SetupBlock(d, null);
var imp = imp_implementationWithBlock(ref block);
method_setImplementation(accessibilitySetValueForAttributeMethod, imp);
accessibilityInUse = CFPreferences.GetAppBooleanValue("voiceOverOnOffKey", "com.apple.universalaccess");
a11yHelperInitialized = true;
}
void SetValue(string key, IntPtr value)
{
using (var cfKey = new CFString(key)) {
CFPreferences.SetValue(
cfKey.Handle,
value,
applicationId.Handle,
CFPreferences.kCFPreferencesCurrentUser,
CFPreferences.kCFPreferencesAnyHost);
CFPreferences.Synchronize(
applicationId.Handle,
CFPreferences.kCFPreferencesCurrentUser,
CFPreferences.kCFPreferencesAnyHost);
}
}
public void PlaySoundEffect(SoundEffect effect, EffectMode mode)
{
if (mode == EffectMode.Off || effect == SoundEffect.None)
{
return;
}
if (mode == EffectMode.Default && Forms9Patch.Settings.SoundEffectMode != EffectMode.On)
{
if (Forms9Patch.Settings.SoundEffectMode == EffectMode.Default)
{
// this no longer works and there doesn't appear to be a way to detect if keyclicks is on
//var type = CFPreferences.CurrentApplication;
CFPreferences.AppSynchronize("/var/mobile/Library/Preferences/com.apple.preferences.sounds");
if (!CFPreferences.GetAppBooleanValue("keyboard", "/var/mobile/Library/Preferences/com.apple.preferences.sounds"))
{
return;
}
}
else // Forms9Patch.Settings.SoundEffectMode == EffectMode.Off
{
return;
}
}
switch (effect)
{
case SoundEffect.KeyClick:
click.PlaySystemSound();
break;
case SoundEffect.Return:
modifier.PlaySystemSound();
break;
case SoundEffect.Delete:
delete.PlaySystemSound();
break;
}
}
/// <summary>
/// Feedback the specified effect and mode.
/// </summary>
/// <param name="effect">Effect.</param>
/// <param name="mode">Mode.</param>
public void Feedback(HapticEffect effect, KeyClicks mode = KeyClicks.Default)
{
var soundEnabled = (mode & KeyClicks.On) > 0;
if (mode == KeyClicks.Default)
{
soundEnabled = (Forms9Patch.Settings.KeyClicks & KeyClicks.On) > 0;
if (Forms9Patch.Settings.KeyClicks == KeyClicks.Default)
{
// this no longer works and there doesn't appear to be a way to detect if keyclicks is on
//var type = CFPreferences.CurrentApplication;
CFPreferences.AppSynchronize("/var/mobile/Library/Preferences/com.apple.preferences.sounds");
soundEnabled = CFPreferences.GetAppBooleanValue("keyboard", "/var/mobile/Library/Preferences/com.apple.preferences.sounds");
}
}
if (soundEnabled)
{
switch (effect)
{
case HapticEffect.None:
break;
case HapticEffect.KeyClick:
click.PlaySystemSoundAsync();
break;
case HapticEffect.Return:
modifier.PlaySystemSoundAsync();
break;
case HapticEffect.Delete:
delete.PlaySystemSoundAsync();
break;
}
}
}
protected override IReadOnlyList <string> GetKeys()
=> CFArray.FromCFStringArray(CFPreferences.CopyKeyList(
applicationId.Handle,
CFPreferences.kCFPreferencesCurrentUser,
CFPreferences.kCFPreferencesAnyHost))
?? (IReadOnlyList <string>)Array.Empty <string> ();
protected override bool StorageTryGetValue(
string key,
Type valueType,
TypeCode valueTypeCode,
out object value)
{
using (var cfKey = new CFString(key)) {
var valuePtr = CFPreferences.CopyValue(
cfKey.Handle,
applicationId.Handle,
CFPreferences.kCFPreferencesCurrentUser,
CFPreferences.kCFPreferencesAnyHost);
if (valuePtr == IntPtr.Zero)
{
value = null;
return(false);
}
var typeId = CoreFoundation.CFGetTypeID(valuePtr);
if (typeId == CoreFoundation.CFTypeID.CFBoolean)
{
value = CFBoolean.ToBoolean(valuePtr);
return(true);
}
if (typeId == CoreFoundation.CFTypeID.CFString)
{
using (var cfString = new CFString(valuePtr))
value = cfString.ToString();
return(true);
}
if (typeId == CoreFoundation.CFTypeID.CFNumber)
{
using (var cfNumber = new CFNumber(valuePtr)) {
switch (cfNumber.Type)
{
case CFNumberType.SInt8:
case CFNumberType.Char:
value = valueTypeCode == TypeCode.Byte
? cfNumber.ToByte()
: (object)cfNumber.ToSByte();
return(true);
case CFNumberType.SInt16:
case CFNumberType.Short:
value = valueTypeCode == TypeCode.UInt16
? cfNumber.ToUInt16()
: (object)cfNumber.ToInt16();
return(true);
case CFNumberType.SInt32:
case CFNumberType.Int:
case CFNumberType.Long:
value = valueTypeCode == TypeCode.UInt32
? cfNumber.ToUInt32()
: (object)cfNumber.ToInt32();
return(true);
case CFNumberType.SInt64:
case CFNumberType.LongLong:
case CFNumberType.CFIndex:
case CFNumberType.NSInteger:
value = valueTypeCode == TypeCode.UInt64
? cfNumber.ToUInt64()
: (object)cfNumber.ToInt64();
return(true);
case CFNumberType.Float32:
case CFNumberType.Float:
value = cfNumber.ToSingle();
return(true);
case CFNumberType.Float64:
case CFNumberType.Double:
case CFNumberType.CGFloat:
value = cfNumber.ToDouble();
return(true);
}
}
}
if (typeId == CoreFoundation.CFTypeID.CFArray)
{
try {
value = CFArray
.FromCFStringArray(valuePtr)
?.ToArray();
return(value != null);
} catch {
value = null;
return(false);
}
}
value = null;
return(false);
}
}
