2007-03-11 Everaldo Canuto <everaldo@simios.org>

2007-03-11  Everaldo Canuto  <everaldo@simios.org>

	* Theme.cs: GetLinkFont abstract method added.

	* LinkLabel.cs:
	- Remove CalcTrimRectangle, no longer needed.
	- Factor also remove, position issues must be fixed in libgdiplus.
	- Move GetPieceColor to ThemeWin32Classic.cs as it is theme related.
	- GetPieceFont, CreateLinkFont and link_font removed, theme must be
	care about font	used to draw links.
	- Set TabStop to true when control is "Selectable", control is selectable
	when have one or more links. Fixes #80501 (test case is also added).
	- Set the LinkArea values after links change, LinkArea values must be
	based in first link position and size, a test case was created.
	- Fix ControlStyles.Selectable value, now is based on LinkArea value,
	the attribute must be true LinkArea.Length > 0. The same was applied to
	TabStop.

	* ThemeWin32Classic.cs:
	- LinkLabelGetPieceColor and LinkLabelGetPieceFont created and used
	in draw method.
	- Use CPDrawStringDisabled to draw disabled text instead of hard code
	color change.
	- Draw focus rectangle for every parts focused, including parts that
	is on another line, its because regions returns various rectangles
	and not only one. Needed to mimic W32 look.
	- Uses Graphics.Clip to delimite region painted, it mean that now
	complete text is passed to DrawString, with this we solve layout
	issues without create another text renderer.
	- Uses Region.Intersect to fix some flickers problems, now only needed
	parts will redrawed.
	- This changes fixes #79614 and some other unreported issues, on Linux
	some layout problems still remain, the problem is under
	MeasureCharacterRanges but it is an libgdiplus bug.

svn path=/trunk/mcs/; revision=74082