public SoftwareKeyboardRenderer(IHostUiTheme uiTheme)
{
_renderer = new SoftwareKeyboardRendererBase(uiTheme);
StartTextBoxBlinker(_textBoxBlinkTimedAction, _state, _stateLock);
StartRenderer(_renderAction, _renderer, _state, _stateLock);
}
private static void StartRenderer(TimedAction timedAction, SoftwareKeyboardRendererBase renderer, SoftwareKeyboardUiState state, object stateLock)
{
SoftwareKeyboardUiState internalState = new SoftwareKeyboardUiState();
bool canCreateSurface = false;
bool needsUpdate = true;
timedAction.Reset(() =>
{
lock (stateLock)
{
if (!Monitor.Wait(stateLock, RendererWaitTimeoutMilliseconds))
{
return;
}
needsUpdate = UpdateStateField(ref state.InputText, ref internalState.InputText);
needsUpdate |= UpdateStateField(ref state.CursorBegin, ref internalState.CursorBegin);
needsUpdate |= UpdateStateField(ref state.CursorEnd, ref internalState.CursorEnd);
needsUpdate |= UpdateStateField(ref state.AcceptPressed, ref internalState.AcceptPressed);
needsUpdate |= UpdateStateField(ref state.CancelPressed, ref internalState.CancelPressed);
needsUpdate |= UpdateStateField(ref state.OverwriteMode, ref internalState.OverwriteMode);
needsUpdate |= UpdateStateField(ref state.TypingEnabled, ref internalState.TypingEnabled);
needsUpdate |= UpdateStateField(ref state.ControllerEnabled, ref internalState.ControllerEnabled);
needsUpdate |= UpdateStateField(ref state.TextBoxBlinkCounter, ref internalState.TextBoxBlinkCounter);
canCreateSurface = state.SurfaceInfo != null && internalState.SurfaceInfo == null;
if (canCreateSurface)
{
internalState.SurfaceInfo = state.SurfaceInfo;
}
}
if (canCreateSurface)
{
renderer.CreateSurface(internalState.SurfaceInfo);
}
if (needsUpdate)
{
renderer.DrawMutableElements(internalState);
renderer.CopyImageToBuffer();
needsUpdate = false;
}
});
}
