Changes between Initial Version and Version 1 of MapGuideRfc148

Timestamp:

10/19/14 17:04:59 (10 years ago)

Author:

jng

Comment:

--

MapGuideRfc148

@@ +1 @@
+
+= !MapGuide RFC 148 - Support user-defined selection color in RenderMap =
+
+This page contains a change request (RFC) for the !MapGuide Open Source project.
+More !MapGuide RFCs can be found on the [wiki:MapGuideRfcs RFCs] page.
+
+== Status ==
+
+||RFC Template Version||(1.0)||
+||Submission Date||20 Oct 2014||
+||Last Modified||||
+||Author||Jackie Ng||
+||RFC Status||draft||
+||Implementation Status||not ready||
+||Proposed Milestone||3.0||
+||Assigned PSC guide(s)||(when determined)||
+||'''Voting History'''||(vote date)||
+||+1||||
+||+0||||
+||-0||||
+||-1||||
+||no vote||||
+
+== Overview ==
+
+This RFC proposes to extend the RenderMap API to support user-defined selection colors
+
+== Motivation ==
+
+Currently, the RenderMap API does not offer the ability to pass in a custom selection color. As a result, any selections rendered via the RenderMap API will always be blue, which may not be suitable for particular maps.
+
+== Proposed Solution ==
+
+Add a new overload of RenderMap that accepts a selection color to MgRenderingService. For simplicity of implementation, we've based this new overload on the existing overload method with the most parameters.
+
+{{{
+class MgRenderingService
+{
+PUBLISHED_API:
+...
+    /////////////////////////////////////////////////////////////////
+    /// \brief
+    /// Renders the specified MgMap to the requested image format.
+    ///
+    /// \param map
+    /// Input
+    /// map object containing current state of map.
+    /// \param selection
+    /// Input
+    /// map feature selection. Specifies the selected features on the map
+    /// \param center
+    /// Input
+    /// map center point. Specifies the center point for the map
+    /// \param scale
+    /// Input
+    /// map scale. Specifies the scale for the map
+    /// \param width
+    /// Input
+    /// image width. Specifies the image width in pixels
+    /// \param height
+    /// Input
+    /// image height. Specifies the image height in pixels
+    /// \param backgroundColor
+    /// Input
+    /// background color. Specifies the map background color
+    /// \param format
+    /// Input
+    /// image format. Defines the format of the resulting image
+    /// \param bKeepSelection
+    /// Input
+    /// true if you want to keep the selection
+    /// \param selectionColor
+    /// Input
+    /// The color to use for rendered selections
+    ///
+    /// \return
+    /// A byte reader containing the rendered image
+    ///
+    virtual MgByteReader* RenderMap(
+        MgMap* map,
+        MgSelection* selection,
+        MgCoordinate* center,
+        double scale,
+        INT32 width,
+        INT32 height,
+        MgColor* backgroundColor,
+        CREFSTRING format,
+        bool bKeepSelection,
+        MgColor* selectionColor) = 0;
+};
+}}}
+
+In the mapagent, we'll introduce a version 3.0.0 GETMAPIMAGE that supports a user-defined selection color.
+
+|| '''Name''' || '''Value'''  || '''Required''' || '''Description''' ||
+|| OPERATION || GETMAPIMAGE || Yes || Operation to execute ||
+|| VERSION || 3.0.0 || Yes || Operation version ||
+|| CLIENTAGENT || text || Optional || Descriptive text for client ||
+|| SESSION || session identifier || Optional || !MapGuide session identifier containing map to display.[[BR]]SESSION or USERNAME and PASSWORD must be specified. ||
+|| USERNAME || text || Optional || !MapGuide user id.[[BR]]SESSION or USERNAME and PASSWORD must be specified.|| 
+|| PASSWORD || text || Optional || Password for !MapGuide user.[[BR]]SESSION or USERNAME and PASSWORD must be specified. || 
+|| MAPNAME || text || Optional || Name of the map to display.[[BR]]This corresponds to the !GetName() value for the resource identifier.[[BR]]MAPNAME or MAPDEFINITION must be specified. ||
+|| MAPDEFINITION || text || Optional || Resource identifier for the map definition.[[BR]]MAPNAME or MAPDEFINITION must be specified. ||
+|| FORMAT || JPG/PNG/PNG8 || Yes || Image format for rendered image ||
+|| KEEPSELECTION || 0/1 || Optional || If true, render selected feature(s) even if they are outside the current scale. ||
+|| SETVIEWCENTERX || double || Optional || Set X coordinate for center of map. ||
+|| SETVIEWCENTERY || double || Optional || Set Y coordinate for center of map. ||
+|| SETVIEWSCALE || double || Optional || Set scale for map. ||
+|| SETDISPLAYDPI || integer || Optional || Set DPI for map. ||
+|| SETDISPLAYWIDTH || integer || Optional || Set width of image in pixels. ||
+|| SETDISPLAYHEIGHT || integer || Optional || Set height of image in pixels. ||
+|| SHOWLAYERS || text || Optional || List of layers to display. ||
+|| HIDELAYERS || text || Optional || List of layers to hide. ||
+|| SHOWGROUPS || text || Optional || List of groups to display. ||
+|| HIDEGROUPS || text || Optional || List of groups to hide. ||
+|| CLIP || 0/1 || Optional || If true, additional clipping will be performed on image. ||
+|| SELECTIONCOLOR || RGBA hex color || Optional || If specified, any selections rendered will use the specified color. Defaults to blue if not specified ||
+
+== Implications ==
+
+None. This is a new API.
+
+== Test Plan ==
+
+Add new rendering tests that pass in specific colors. Verify image output results.
+
+== Funding / Resources ==
+
+Community
+
+== References ==
+
+ * #2399