// Get the toolkit version of this brush for a specific toolkit.
internal IToolkitBrush GetBrush(IToolkit toolkit)
{
lock (this)
{
if (this.toolkitBrush == null)
{
// We don't yet have a toolkit brush yet.
this.toolkitBrush = CreateBrush(toolkit);
this.toolkit = toolkit;
return(this.toolkitBrush);
}
else if (this.toolkit == toolkit)
{
// Same toolkit - return the cached brush information.
return(this.toolkitBrush);
}
else
{
// We have a brush for another toolkit,
// so dispose it and create for this toolkit.
// We null out "toolkitBrush" before calling
// "CreateBrush()" just in case an exception
// is thrown while creating the toolkit brush.
this.toolkitBrush.Dispose();
this.toolkitBrush = null;
this.toolkitBrush = CreateBrush(toolkit);
this.toolkit = toolkit;
return(this.toolkitBrush);
}
}
}
public DrawingXorBrush(IToolkit toolkit, IToolkitBrush innerBrush)
: base(toolkit, System.Drawing.Color.Black)
{
// TODO: create the XOR brush.
this.innerBrush = innerBrush;
hBrush = IntPtr.Zero;
}
public DrawingXorBrush(IToolkit toolkit, IToolkitBrush innerBrush)
: base(toolkit, System.Drawing.Color.Black)
{
// TODO: create the XOR brush.
this.innerBrush = innerBrush;
hBrush = IntPtr.Zero;
}
// Select a brush-based pen into a graphics object.
public override void Select(IToolkitGraphics graphics, IToolkitBrush brush)
{
// Set the basic line information first.
Select(graphics);
// Select the brush details into the graphics context.
brush.Select(graphics);
}
protected virtual void Dispose(bool disposing)
{
lock(this)
{
if(toolkitBrush != null)
{
toolkitBrush.Dispose();
toolkitBrush = null;
}
}
}
protected virtual void Dispose(bool disposing)
{
lock (this)
{
if (toolkitBrush != null)
{
toolkitBrush.Dispose();
toolkitBrush = null;
}
}
}
// Mark this brush as modified, and flush all previous brush information.
// Used when a subclass modifies a brush's properties.
internal void Modified()
{
lock(this)
{
if(toolkitBrush != null)
{
toolkitBrush.Dispose();
toolkitBrush = null;
}
toolkit = null;
}
}
// Mark this brush as modified, and flush all previous brush information.
// Used when a subclass modifies a brush's properties.
internal void Modified()
{
lock (this)
{
if (toolkitBrush != null)
{
toolkitBrush.Dispose();
toolkitBrush = null;
}
toolkit = null;
}
}
// Select a brush-based pen into a graphics object.
public override void Select(IToolkitGraphics graphics, IToolkitBrush brush)
{
Select(graphics);
}
// Constructor.
internal Brush()
{
toolkit = null;
toolkitBrush = null;
}
// Constructor.
public DrawingXorBrush(IToolkitBrush innerBrush)
: base(System.Drawing.Color.Black)
{
this.innerBrush = innerBrush;
}
// Constructor.
public DrawingXorBrush(IToolkitBrush innerBrush)
: base(System.Drawing.Color.Black)
{
this.innerBrush = innerBrush;
}
// Select a brush-based pen into a graphics object.
public override void Select(IToolkitGraphics graphics, IToolkitBrush brush)
{
Select(graphics);
}
public abstract void Select(IToolkitGraphics graphics, IToolkitBrush brush);
// Create this brush for a specific toolkit. Inner part of "GetBrush()".
internal override IToolkitBrush CreateBrush(IToolkit toolkit)
{
IToolkitBrush innerBrush = brush.GetBrush(toolkit);
return(toolkit.CreateXorBrush(innerBrush));
}
// Select a brush-based pen into a graphics object.
public void Select(IToolkitGraphics graphics, IToolkitBrush brush)
{
Select(graphics);
// TODO: select the brush information
}
public IToolkitBrush CreateXorBrush(IToolkitBrush innerBrush)
{
throw new NotImplementedException();
}
// Create an XOR brush.
public virtual IToolkitBrush CreateXorBrush(IToolkitBrush innerBrush)
{
return null;
}
public abstract void Select(IToolkitGraphics graphics, IToolkitBrush brush);
// Select a brush-based pen into a graphics object.
public void Select(IToolkitGraphics graphics, IToolkitBrush brush)
{
Select(graphics);
// TODO: select the brush information
}
// Constructor.
internal Brush()
{
toolkit = null;
toolkitBrush = null;
}
// Get the toolkit version of this brush for a specific toolkit.
internal IToolkitBrush GetBrush(IToolkit toolkit)
{
lock(this)
{
if(this.toolkitBrush == null)
{
// We don't yet have a toolkit brush yet.
this.toolkitBrush = CreateBrush(toolkit);
this.toolkit = toolkit;
return this.toolkitBrush;
}
else if(this.toolkit == toolkit)
{
// Same toolkit - return the cached brush information.
return this.toolkitBrush;
}
else
{
// We have a brush for another toolkit,
// so dispose it and create for this toolkit.
// We null out "toolkitBrush" before calling
// "CreateBrush()" just in case an exception
// is thrown while creating the toolkit brush.
this.toolkitBrush.Dispose();
this.toolkitBrush = null;
this.toolkitBrush = CreateBrush(toolkit);
this.toolkit = toolkit;
return this.toolkitBrush;
}
}
}
// Create an XOR brush.
public virtual IToolkitBrush CreateXorBrush(IToolkitBrush innerBrush)
{
return(null);
}
// Select a brush-based pen into a graphics object.
public override void Select(IToolkitGraphics graphics, IToolkitBrush brush)
{
// Set the basic line information first.
Select(graphics);
// Select the brush details into the graphics context.
brush.Select(graphics);
}
// Create an XOR brush.
public IToolkitBrush CreateXorBrush(IToolkitBrush innerBrush)
{
return new DrawingXorBrush(innerBrush);
}
public void Select(IToolkitGraphics graphics, IToolkitBrush brush)
{
graphics.Pen = this;
}
// Create an XOR brush.
public IToolkitBrush CreateXorBrush(IToolkitBrush innerBrush)
{
return(new DrawingXorBrush(innerBrush));
}
