Class CM2Layer extends CMLayer

CM2Layer
This class is the base class for all other layers. This class contains functions and properties for feature and raster based
classes. This is because the CMLayerPyramid supports both raster and vector data. This also may be a trend with data formats like KML.

Adds:
- Zooming: Min, Max, To Bounds
- Metadata
- InfoText popup balloon
- Painting Marks, labels, and icon images for point data
- Mouse over and selected styles
- Settings for features
- Getting and setting attributes
- Bounds of features

Copyright (C) 2020, Humboldt State University, Jim Graham

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
Public License as published by the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see
.

Settings Group: Mark

Setting	Name	Type	Options	Default	Comments
Type	Type	CMTYPE_ENUMERATED	CMMARK_CIRCLE, CMMARK_TRIANGLE, CMMARK_SQUARE, CMMARK_STAR	CMMARK_CIRCLE
Size	Size	CMTYPE_FLOAT		3
SizeInMapUnits	Size In Map Units	CMTYPE_BOOLEAN			size the mark as the user zooms in and out

Settings Group: IconImage

Setting	Name	Type	Default	Comments
URL	URL	CMTYPE_URL
TheImage	Image	CMTYPE_IMAGE	null
OffsetX	Offset X	CMTYPE_FLOAT	0	distance in pixels to shift the left edge of the icon from the point coordinate
OffsetY	Offset Y	CMTYPE_FLOAT	0	distance in pixels to shift the top edge of the icon from the point coordinate
Width	Width	CMTYPE_FLOAT		distance in pixels to shift the left edge of the icon from the point coordinate
Height	Height	CMTYPE_FLOAT		distance in pixels to shift the top edge of the icon from the point coordinate

Settings Group: LabelBox

Setting	Name	Type	Options	Default
Location	Location	CMTYPE_INDEXES	CMLABEL_LOCATIONS, Default:CMLABEL_TOP_RIGHT	CMLABEL_TOP_RIGHT
OffsetX	Offset X	CMTYPE_FLOAT		0
OffsetY	Offset Y	CMTYPE_FLOAT		0
Padding	Padding	CMTYPE_FLOAT		2

LabelStyle Label Style CMTYPE_OBJECT null standard HTML 5 settings except the defaults may change MouseOverStyle Mouse Over Style CMTYPE_OBJECT standard HTML 5 settings SelectedStyle Selected Style CMTYPE_OBJECT null standard HTML 5 settings

Static Functions

Returns	Function	Throws
	PaintMark()

Object Functions

Inherited From: CMLayer

Returns	Function	Throws
	SetIconImage(TheURL, OffsetX, OffsetY)
	SetFeatureIconImage(TheURL, OffsetX, OffsetY)

Static Functions

PaintMark()

Utility function to draw a mark. Used by the layers and by the settings dialogs
jjg - might want to change this to be Pixel based to remove number of convertions.

Object Functions

SetIconImage(TheURL, OffsetX, OffsetY)

Icon for point features

Parameters:
    TheURL - the URL of the image to use for all features
    OffsetX - horizontal offset in pixels to go from the upper left of the image to the hot spot
    OffsetY - vertical offset in pixels to go from the upper left of the image to the hot spot

SetFeatureIconImage(TheURL, OffsetX, OffsetY)

Icon for point features