example_loadergpi.cpp

This is an example on how to create a loader plug-in using the new GPI object model.

#include <ShapeUpAPI.h>

SURESULT __cdecl HookFunc(SUHANDLE hWorkspace, int hookType, SUHookData *args);

// Every plug-in needs an instance of SUExport called suapi
SUExport suapi;

size_t __cdecl fnVersion()
{
    return SHAPEUP_API_VERSION;
}

const GUID* __cdecl fnGUID()
{
    // CREATE YOUR OWN GUID !!
    // {97F4EA41-7D7E-42c1-B555-2D4C86C912A7}
    static const GUID guid = 
        { 0x97f4ea41, 0x7d7e, 0x42c1, { 0xb5, 0x55, 0x2d, 0x4c, 0x86, 0xc9, 0x12, 0xa7 } };
    return &guid;
}

SURESULT __cdecl fnInit(SUExport *pExport)
{
    AFX_MANAGE_STATE(AfxGetStaticModuleState());

    pExport->import.pszName = "Test of GPI and ShapeUp API";
    pExport->import.pszDescription = "Test of GPI and ShapeUp API\nGPI Test";
    pExport->import.pszInfo = "Copyright (c) 2007";
    pExport->import.pszPluginVersion = "1.00";

    // Now keep the entire struct which is the actual ShapeUp API
    // (we need the function pointers later)
    ::memcpy(&suapi, pExport, sizeof(SUExport));

    // Set-up our hook callback
    pExport->import.pfnHook = HookFunc;

    // Add our load layer menu item
    ShapeUp_AddLoadLayerHook(0, "Example Loader", "A random point loader", NULL, NULL);

    return SURESULT_OK;
}

// ShapeUp will call this function when an event occurs
SURESULT __cdecl HookFunc(SUHANDLE hWorkspace, int hookType, SUHookData *args)
{
    AFX_MANAGE_STATE(AfxGetStaticModuleState());

    switch (hookType)
    {
    case HOOKTYPE_MENUITEM:
        // Only add stuff if we have an active workspace
        if (hWorkspace != NULL)
        {
            // args is really a SUMenuItemHookData*

            // TODO: Load data here

            SUWorkspace workspace(hWorkspace);
            SUTheme theme = workspace.CreateNewTheme(Shape_Point, "New Point layer");

            theme.AddAttribute(ATTRIBUTETYPE_STRING, "ObjectName", NULL);

            for (int i = 0; i < numberOfPoints; ++i)
            {
                SUShape shape = theme.AddShape(shapeData[i]);
                shape.SetAttribute(theme, 0, "A name");
            }
        }
        return SURESULT_OK;
    default:
        break;
    }

    return SURESULT_OK;
}

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