void Slider::OnValueChanged(double oldValue, double newValue)
{
InvalidateArrange();
InvalidateVisual();
__super::OnValueChanged(oldValue, newValue);
}
void
Image::ImageFailed (ImageErrorEventArgs *args)
{
BitmapSource *source = (BitmapSource*) GetSource ();
if (source->Is (Type::BITMAPIMAGE)) {
source->RemoveHandler (BitmapImage::DownloadProgressEvent, download_progress, this);
source->RemoveHandler (BitmapImage::ImageOpenedEvent, image_opened, this);
source->RemoveHandler (BitmapImage::ImageFailedEvent, image_failed, this);
}
source->RemoveHandler (BitmapSource::PixelDataChangedEvent, source_pixel_data_changed, this);
InvalidateArrange ();
InvalidateMeasure ();
UpdateBounds ();
Invalidate ();
args = new ImageErrorEventArgs (this, *(MoonError*)args->GetMoonError ());
if (HasHandlers (ImageFailedEvent)) {
Emit (ImageFailedEvent, args);
} else {
GetDeployment ()->GetSurface ()->EmitError (args);
}
}
void ItemsControl::RemoveAt(int iIndex)
{
if (iIndex < GetItems()->GetCount() && iIndex >= 0)
{
GetItems()->RemoveAt(iIndex);
InvalidateArrange();
}
}
void TabControl::OnItemSelected(suic::ObjectPtr item, ItemSelectionEventArg& e)
{
__super::OnItemSelected(item, e);
//
// 设置测量大小脏区域标志，使布局管理器重新元素测量大小
//
RaisedMeasureDirty();
//
// 刷新布局和显示
//
InvalidateMeasure();
InvalidateArrange();
InvalidateVisual();
}
void
Canvas::OnPropertyChanged (PropertyChangedEventArgs *args, MoonError *error)
{
if (args->GetProperty ()->GetOwnerType() != Type::CANVAS) {
Panel::OnPropertyChanged (args, error);
return;
}
if (args->GetId () == Canvas::TopProperty
|| args->GetId () == Canvas::LeftProperty) {
if (GetVisualParent () == NULL) {
UpdateTransform ();
InvalidateArrange ();
}
}
NotifyListenersOfPropertyChange (args, error);
}
void
Image::ImageOpened (RoutedEventArgs *args)
{
BitmapSource *source = (BitmapSource*)GetSource ();
if (source->Is (Type::BITMAPIMAGE)) {
source->RemoveHandler (BitmapImage::DownloadProgressEvent, download_progress, this);
source->RemoveHandler (BitmapImage::ImageOpenedEvent, image_opened, this);
source->RemoveHandler (BitmapImage::ImageFailedEvent, image_failed, this);
}
InvalidateArrange ();
InvalidateMeasure ();
UpdateBounds ();
Invalidate ();
if (HasHandlers (ImageOpenedEvent)) {
args->ref (); // to counter the unref in Emit
Emit (ImageOpenedEvent, args);
}
}
void
Control::OnPropertyChanged (PropertyChangedEventArgs *args, MoonError *error)
{
if (args->GetProperty ()->GetOwnerType() != Type::CONTROL) {
FrameworkElement::OnPropertyChanged (args, error);
return;
}
if (args->GetId () == Control::TemplateProperty) {
if (GetSubtreeObject ())
ElementRemoved ((UIElement *) GetSubtreeObject ());
InvalidateMeasure ();
}
else if (args->GetId () == Control::PaddingProperty
|| args->GetId () == Control::BorderThicknessProperty) {
InvalidateMeasure ();
} else if (args->GetId () == Control::IsEnabledProperty) {
if (!args->GetNewValue ()->AsBool ()) {
Surface *surface = Deployment::GetCurrent ()->GetSurface ();
if (surface && surface->GetFocusedElement () == this) {
// Ensure this element loses focus, then try to focus the next suitable element
surface->FocusElement (NULL);
TabNavigationWalker::Focus (this, true);
}
ReleaseMouseCapture ();
}
PropertyChangedEventArgs *pargs = new PropertyChangedEventArgs (args->GetProperty(),
args->GetId (),
args->GetOldValue(),
args->GetNewValue());
EmitAsync (IsEnabledChangedEvent, pargs);
} else if (args->GetId () == Control::HorizontalContentAlignmentProperty
|| args->GetId () == Control::VerticalContentAlignmentProperty) {
InvalidateArrange ();
}
NotifyListenersOfPropertyChange (args, error);
}
void ScrollBar::ScrollTo(int nNewPos, bool bRepaint)
{
int iMin = 0;
int iMaxPos = max(0, (_scroInfo.iMax - iMin + 1 - _scroInfo.iPage));
if (nNewPos < iMin)
{
nNewPos = iMin;
}
int iOldPos = _scroInfo.iVisualPos;
_scroInfo.iVisualPos = min(iMaxPos, nNewPos);
if (iOldPos != _scroInfo.iVisualPos)
{
InvalidateArrange();
}
if (bRepaint)
{
InvalidateVisual();
}
}
void ScrollBar::ShowSecondScrollButton(bool bShow)
{
_increaseBtn.SetVisible(bShow);
InvalidateArrange();
InvalidateVisual();
}
void ScrollBar::ShowFirstScrollButton(bool bShow)
{
_decreaseBtn.SetVisible(bShow);
InvalidateArrange();
InvalidateVisual();
}
void ScrollBar::UpdateScrollBar()
{
InvalidateArrange();
}
void ItemsControl::ClearChildren()
{
GetItems()->Clear();
InvalidateArrange();
}
void ItemsControl::RemoveChild(suic::ObjectPtr ePtr)
{
GetItems()->Remove(ePtr);
InvalidateArrange();
}
