/// <summary>
/// Apply properties for all selected objects.
/// Returns TRue if at least one property is changed.
/// </summary>
private bool ApplyProperties(GraphicsProperties properties)
{
bool changed = false;
foreach (DrawObject o in graphicsList)
{
if (o.Selected)
{
if (properties.Color.HasValue)
{
if (o.Color != properties.Color.Value)
{
o.Color = properties.Color.Value;
DrawObject.LastUsedColor = properties.Color.Value;
changed = true;
}
}
if (properties.PenWidth.HasValue)
{
if (o.PenWidth != properties.PenWidth.Value)
{
o.PenWidth = properties.PenWidth.Value;
DrawObject.LastUsedPenWidth = properties.PenWidth.Value;
changed = true;
}
}
}
}
return changed;
}
/// <summary>
/// Get properties from selected objects and fill GraphicsProperties instance
/// </summary>
/// <returns></returns>
private GraphicsProperties GetProperties()
{
GraphicsProperties properties = new GraphicsProperties();
bool bFirst = true;
int firstColor = 0;
int firstPenWidth = 1;
bool allColorsAreEqual = true;
bool allWidthAreEqual = true;
foreach (DrawObject o in Selection)
{
if (bFirst)
{
firstColor = o.Color.ToArgb();
firstPenWidth = o.PenWidth;
bFirst = false;
}
else
{
if (o.Color.ToArgb() != firstColor)
allColorsAreEqual = false;
if (o.PenWidth != firstPenWidth)
allWidthAreEqual = false;
}
}
if (allColorsAreEqual)
{
properties.Color = Color.FromArgb(firstColor);
}
if (allWidthAreEqual)
{
properties.PenWidth = firstPenWidth;
}
return properties;
}