public UserAnnotationViewModel(ISharedDataService sharedDataService, MeetingViewModel meeting)
{
Meeting = meeting;
AnnotationsModel = sharedDataService.AnnotationsModel;
SurfaceSize = new AnnotationSurfaceSize();
var activeToolObs = Meeting.WhenAnyValue(vm => vm.ActiveTool)
.Where(t => t != null);
var pageChangedObs = activeToolObs
.Select(t => t.WhenAnyValue(v => v.CurrentPageNumber,
p => new ToolIdAndPageNumber { ToolId = t.ToolId, PageNumber = p })
)
.Switch(); // Only listen to the most recent sequence of property changes (active tool)
// Every time the tool changes, select the tool id and current page number
var toolChangedObs = activeToolObs
.Select(t => new ToolIdAndPageNumber { ToolId = t.ToolId, PageNumber = t.CurrentPageNumber });
// Merge them together - tool changes and current page of the tool
_collectionRefreshSub = toolChangedObs
.Merge(pageChangedObs)
.Subscribe(t => this.RaisePropertyChanged("Annotations"));
// whenever the suface size's width or height changes, re-bind the annotations
// on the agent's side, this will send stuff over the wire. need to figure out how to solve this.
_sizeChangedSub = this.SurfaceSize
.WhenAnyValue(p => p.Width, p => p.Height, (w, h) => true)
.Subscribe(p => this.RaisePropertyChanged("Annotations"));
}
private AnnotationBuilder(AnnotationType type, AnnotationSurfaceSize size, Guid toolId, int currentPage)
{
this.surfaceSize = size;
this.type = type;
this.annotation = new Annotation()
{
Type = type,
Points = new List<AnnotationPoint>(),
PageNumber = currentPage,
ToolId = toolId
};
}
private AnnotationBuilder(AnnotationType type, AnnotationSurfaceSize size, Guid toolId, int currentPage)
{
this.surfaceSize = size;
this.type = type;
this.annotation = new Annotation()
{
Type = type,
Points = new List <AnnotationPoint>(),
PageNumber = currentPage,
ToolId = toolId
};
}
public AgentAnnotationSetupModel()
{
_screenSize = new AnnotationSurfaceSize();
}
public static AnnotationBuilder Create(AnnotationType type, AnnotationSurfaceSize size, int currentPage, Guid toolId)
{
return(new AnnotationBuilder(type, size, toolId, currentPage));
}
public ClientAnnotationSetupModel()
{
_screenSize = new AnnotationSurfaceSize();
}
public static AnnotationPoint ConvertFromStandardRangeToSurface(AnnotationPoint point, AnnotationSurfaceSize surface)
{
return new AnnotationPoint { X = point.X * surface.Width, Y = point.Y * surface.Height };
}
private AnnotationViewModel(Annotation annotation, AnnotationSurfaceSize surfaceSize)
{
Annotation = annotation;
_surfaceSize = surfaceSize;
}
public static AnnotationViewModel Create(Annotation annotation, AnnotationSurfaceSize surfaceSize)
{
return new AnnotationViewModel(annotation, surfaceSize);
}
public static AnnotationPoint ConvertFromStandardRangeToSurface(AnnotationPoint point, AnnotationSurfaceSize surface)
{
return(new AnnotationPoint {
X = point.X * surface.Width, Y = point.Y * surface.Height
});
}
public static AnnotationBuilder Create(AnnotationType type, AnnotationSurfaceSize size, int currentPage, Guid toolId)
{
return new AnnotationBuilder(type, size, toolId, currentPage);
}