blank-box.zc

实现树形结构

//[of]:descrption
//[c]Box filled with button face color
//[cf]
//[of]:license
//[c]Code Browser - a folding text editor for programmers
//[c]Copyright (C) 2003-07 Marc Kerbiquet
//[c]
//[c]This program is free software; you can redistribute it and/or modify
//[c]it under the terms of the GNU General Public License as published by
//[c]the Free Software Foundation; either version 2 of the License, or
//[c](at your option) any later version.
//[c]
//[c]This program is distributed in the hope that it will be useful,
//[c]but WITHOUT ANY WARRANTY; without even the implied warranty of
//[c]MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//[c]GNU General Public License for more details.
//[c]
//[c]You should have received a copy of the GNU General Public License
//[c]along with this program; if not, write to the Free Software
//[c]Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//[cf]
//[of]:imports
import "base/memory-allocator"
//[c]
import "graphics/geometry"
import "graphics/graphics"
import "user/box"
import "user/container-box"
//[c]
import "glib/glib"
import "glib/glib-object"
import "gdk/gdk"
import "gtk/gtk"
//[cf]
//[c]
//[of]:constants
//[c]Special color codes
//[c]
public equ bb button face color = 0xFF000000
//[cf]
//[of]:blank box
//[of]:type
public struct blank box : local container box
	private color : color
end
//[cf]
//[of]:instance creation
//[of]:new blank box (parent box)
public func new blank box (parent: box)

	equ s = sizeof local blank box
	def b = allocate memory (s): blank box
	initialize (b, parent)
	return b

end
//[cf]
//[of]:new blank box (parent box, size)
public func new blank box (parent: box, size: int)

	equ s = sizeof local blank box
	def b = allocate memory (s): blank box
	initialize (b, parent, size)
	return b

end
//[cf]
//[cf]
//[of]:color
//[of]:set color (color)
//[c]Changes the fill color
//[c]
//[c]	Color is a rgb color or a special color code:
//[c]	- bb button face color
//[c]
public func set color (m: blank box, color: color)

	if color (m) == color
		return
	end
	
	color (m) = color
	can paint (m) = (color <> bb button face color)
	invalidate (m)

end
//[cf]
//[cf]
//[c]
//[of]:restricted
//[of]:initialize (parent, size)
public func initialize (m: blank box, parent: box, s: int)

	initialize (super(m), parent)
	class (m) = blank box class
	color (m) = bb button face color
	can paint (m) = false
	set (min size (m), s, s)

end
//[cf]
//[of]:initialize (parent)
public func initialize (m: blank box, parent: box)

	initialize (m, parent, 3)

end
//[cf]
//[c]
//[of]:handle paint (canvas, clip)
public func handle paint (m: blank box, c: canvas, clip: rectangle)

	fill rectangle (c, clip, color (m))

end
//[cf]
//[c]
//[cf]
//[cf]
//[of]:blank box class
//[of]:type
public struct blank box class : local container box class
	// empty
end
//[cf]
//[of]:blank box class
public func blank box class

	def c = the blank box class
	if ~ initialized
		initialized = true
		c . copy (container box class)
		c . on paint = ^handle paint (blank box, canvas, rectangle)
		c . accept focus = ^no (box)
	end
	return c

end

private def initialized = false
private def the blank box class : local blank box class
//[cf]
//[cf]