/*

 *  OpenGL_Image_Options-Dialog.c

 *  OpenGL Image

 *

 *  Created by gstahl on Fri Aug 17 2001.

    Copyright:  Copyright © 2001 Apple Computer, Inc., All Rights Reserved

    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.

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                PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN

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#ifdef __APPLE_CC__ // project builder

    #include <Carbon/Carbon.h> // standard carbon

#else // CodeWarrior

    #include <CarbonEvents.h> 

    #include <IBCarbonRuntime.h>

    #include <Gestalt.h>

    #include <Controls.h>

#endif

#include "OpenGL_Image.h" // our header

// ---------------------------------

EventHandlerUPP gTexWinEvtHandler;      // window event handler

// ---------------------------------

static Boolean CompareControlIDs (OSType LHSsignature, SInt32 LHSid, OSType RHSsignature, SInt32 RHSid);

static SInt16 GetControlValueByID (WindowRef window, OSType signature, SInt32 id);

static void SetControlValueByID (WindowRef window, OSType signature, SInt32 id, SInt16 value);

static pascal OSStatus myTexWinEvtHndlr (EventHandlerCallRef myHandler, EventRef event, void* userData);

// ---------------------------------

enum { // control enums from nib 

    kCntlRadioScaleToTex = 1,

    kCntlRadioTileToTex,

    kCntlPopUpScale,

    kCntlCheckOverlap,

    kCntlPopUpMaxTex,

    kCntlCheckClientTex,

    kCntlRadioAGP,

    kCntlCheckNPOTTextures,

    kNumControlsPlus1

};

Boolean gfNPOTCheckValue;

Boolean gfOverlapCheckValue;

Boolean gfTileTextureRadioValue;

// ---------------------------------

// returns true if they match

static Boolean CompareControlIDs (OSType LHSsignature, SInt32 LHSid, OSType RHSsignature, SInt32 RHSid)

{

    if ((LHSsignature == RHSsignature) && (LHSid == RHSid))

        return true;

    else

        return false;

}

// ---------------------------------

// sets a control of id based on value

static SInt16 GetControlValueByID (WindowRef window, OSType signature, SInt32 id)

{

    SInt16 value;

    ControlID idControl;

    ControlRef control;

    idControl.signature = signature;

    idControl.id = id; 

    GetControlByID (window, &idControl, &control);

    value = GetControlValue (control);

    return value;

}

// ---------------------------------

// sets a control of id based on value

static void SetControlValueByID (WindowRef window, OSType signature, SInt32 id, SInt16 value)

{

    ControlID idControl;

    ControlRef control;

    idControl.signature = signature;

    idControl.id = id; 

    GetControlByID (window, &idControl, &control);

    SetControlValue (control, value);

}

// ---------------------------------

static pascal OSStatus myTexWinEvtHndlr (EventHandlerCallRef myHandler, EventRef event, void* userData)

{

#pragma unused (myHandler)

    WindowRef           window = (WindowRef) userData;

    OSStatus            result = eventNotHandledErr;

    if (GetEventKind (event) == kEventControlHit)

    {

        ControlRef control;

        ControlID controlID = { 'ImAt', 0 };

        GetEventParameter (event, kEventParamDirectObject, typeControlRef, NULL, sizeof(control), NULL, &control);

        GetControlID (control, &controlID);

        if (CompareControlIDs ('ImAt', kCntlRadioScaleToTex, controlID.signature, controlID.id) && gfTileTextureRadioValue) // if the scale radio was clicked

        {

            gfTileTextureRadioValue = 1 - gfTileTextureRadioValue;

            SetControlValueByID (window, 'ImAt', kCntlRadioTileToTex, false); //set tile radio to false

            // disable overlap selection while selected to false

            gfOverlapCheckValue = GetControlValueByID (window, 'ImAt', kCntlCheckOverlap);

            SetControlValueByID (window, 'ImAt', kCntlCheckOverlap, false); //set tile radio to false

            controlID.id = kCntlCheckOverlap;

            GetControlByID (window, &controlID, &control);

            DeactivateControl (control);

            // disable NPOT texture selection while selected to false

            gfNPOTCheckValue = GetControlValueByID (window, 'ImAt', kCntlCheckNPOTTextures);

            SetControlValueByID (window, 'ImAt', kCntlCheckNPOTTextures, false); //set check to false

            controlID.id = kCntlCheckNPOTTextures;

            GetControlByID (window, &controlID, &control);

            DeactivateControl (control);

            // enable scale selection

            controlID.id = kCntlPopUpScale;

            GetControlByID (window, &controlID, &control);

            ActivateControl (control);

        }

        else if (CompareControlIDs ('ImAt', kCntlRadioTileToTex, controlID.signature, controlID.id) && !gfTileTextureRadioValue) // if the tile radio was clicked

        {

            gfTileTextureRadioValue = 1 - gfTileTextureRadioValue;

            // disable text scale selection

            SetControlValueByID (window, 'ImAt', kCntlRadioScaleToTex, false); //set tile radio to false

            controlID.id = kCntlPopUpScale;

            GetControlByID (window, &controlID, &control);

            DeactivateControl (control);

            // enable overlap selection

            SetControlValueByID (window, 'ImAt', kCntlCheckOverlap, gfOverlapCheckValue); //set overlap to orginal value

            controlID.id = kCntlCheckOverlap;

            GetControlByID (window, &controlID, &control);

            ActivateControl (control);

            // enable NPOT textures selection

            if (false == gpOpenGLCaps->f_ext_texture_rectangle)

            {

                // disable NPOT Textures selection while selected to false

                SetControlValueByID (window, 'ImAt', kCntlCheckNPOTTextures, false); //set tile radio to false

                controlID.id = kCntlCheckNPOTTextures;

                GetControlByID (window, &controlID, &control);

                DeactivateControl (control);

            }

            else

            {

                SetControlValueByID (window, 'ImAt', kCntlCheckNPOTTextures, gfNPOTCheckValue); //set overlap to orginal value

                controlID.id = kCntlCheckNPOTTextures;

                GetControlByID (window, &controlID, &control);

                ActivateControl (control);

            }

        }

        else if (CompareControlIDs ('ImAt', 0, controlID.signature, controlID.id)) // if the tile radio was clicked

        {

            // done

            QuitAppModalLoopForWindow (window);

        }

        else if (CompareControlIDs ('ImAt', kCntlPopUpMaxTex, controlID.signature, controlID.id)) // if the tile radio was clicked

        {

            MenuRef refMenu;

            unsigned short i;

            long currentMaxTexSize = GetControlValueByID (window, 'ImAt', kCntlPopUpMaxTex);

            long currentTexScale = GetControlValueByID (window, 'ImAt', kCntlPopUpScale);

            // ensure texture scale seeting is also in valid range for GPU

            SetControlValueByID (window, 'ImAt', kCntlPopUpScale, (currentTexScale - 3) < currentMaxTexSize ? currentTexScale : (currentMaxTexSize + 3));

            controlID.id = kCntlPopUpScale; 

            GetControlByID (window, &controlID, &control);

            refMenu = GetControlPopupMenuHandle (control);

            for (i = 1; i <= CountMenuItems (refMenu); i++)

                if (i < currentMaxTexSize + 3 + 1)

                    EnableMenuItem (refMenu, i);

                else

                    DisableMenuItem (refMenu, i);

        }

    }

    return result;

}

#pragma mark -

// ==================================

// public

void GetImageOptions (pRecGLCap pOpenGLCaps, Boolean *pfTileTextures, short * pTextureScale, Boolean * pfOverlapTextures, 

                      short * pMaxTextureSize, Boolean * pfClientTextures, Boolean *pfAGPTextures, Boolean *pfNPOTTextures)

{

    // build window

    UInt32          response;

    IBNibRef        nibRef;

    OSStatus        err;

    WindowRef       window;

    EventHandlerRef ref;

    EventTypeSpec   list[] = { { kEventClassControl, kEventControlHit } };

    ControlRef      control;

    ControlID       controlID = { 'ImAt', 0 };

    if ((Gestalt (gestaltSystemVersion, (SInt32 *) &response) == noErr) && (response >= 0x01000))

        err = CreateNibReference (CFSTR ("main X"), &nibRef);

    else

        err = CreateNibReference (CFSTR ("main 9"), &nibRef);

    if (noErr == err)

        err = CreateWindowFromNib (nibRef, CFSTR ("TextureWindow"), &window);

    DisposeNibReference (nibRef);

    gTexWinEvtHandler = NewEventHandlerUPP (myTexWinEvtHndlr);

    InstallWindowEventHandler (window, gTexWinEvtHandler, GetEventTypeCount (list), list, (void *) window, &ref);

    // set initial values

    {

        MenuRef refMenu;

        unsigned short i;

        short maxUserSizeBits = 0, maxGPUSizeBits = 0, maxGPUSize = pOpenGLCaps->maxTextureSize;

        while (maxGPUSize > 1) 

        { 

            maxGPUSizeBits++;

            maxGPUSize = maxGPUSize >> 1;

        }

        while (*pMaxTextureSize > 1) 

        { 

            maxUserSizeBits++;

            *pMaxTextureSize = *pMaxTextureSize >> 1;

        }

        // restrict texture size to GPU maximum

        maxUserSizeBits = maxUserSizeBits < maxGPUSizeBits ? maxUserSizeBits : maxGPUSizeBits;

        // ensure menu reflects max sizes for GPU

        controlID.id = kCntlPopUpMaxTex; 

        GetControlByID (window, &controlID, &control);

        refMenu = GetControlPopupMenuHandle (control);

        for (i = (unsigned short) maxGPUSizeBits - 3; i <= CountMenuItems (refMenu); i++)

            DisableMenuItem (refMenu, i);       

        SetControlValueByID (window, 'ImAt', kCntlPopUpMaxTex, maxUserSizeBits - 4);

        // ensure texture scale seeting is also in valid range for GPU

        *pTextureScale = *pTextureScale < maxUserSizeBits ? *pTextureScale : maxUserSizeBits;

        if (*pTextureScale == kNone) // look for kNone settings (from using NPOT textures)

            *pTextureScale = maxUserSizeBits;

        controlID.id = kCntlPopUpScale; 

        GetControlByID (window, &controlID, &control);

        refMenu = GetControlPopupMenuHandle (control);

        for (i = (unsigned short) maxUserSizeBits; i <= CountMenuItems (refMenu); i++)

            DisableMenuItem (refMenu, i);       

        SetControlValueByID (window, 'ImAt', kCntlPopUpScale, *pTextureScale - 1); // enumerated value

    }

    if (pOpenGLCaps->f_ext_client_storage)

        SetControlValueByID (window, 'ImAt', kCntlCheckClientTex, *pfClientTextures); 

    else

    {

        *pfClientTextures = false;

        // disable client textures

        controlID.id = kCntlCheckClientTex;

        GetControlByID (window, &controlID, &control);

        DeactivateControl (control);

    }

    gfOverlapCheckValue = *pfOverlapTextures;

    SetControlValueByID (window, 'ImAt', kCntlCheckOverlap, *pfOverlapTextures); 

    if (true == gpOpenGLCaps->f_ext_texture_rectangle)

    {

        gfNPOTCheckValue = *pfNPOTTextures;

        SetControlValueByID (window, 'ImAt', kCntlCheckNPOTTextures, gfNPOTCheckValue);

    }

    else

    {

        gfNPOTCheckValue = false;

        SetControlValueByID (window, 'ImAt', kCntlCheckNPOTTextures, gfNPOTCheckValue);

    }

    gfTileTextureRadioValue = *pfTileTextures;

    if (true == gfTileTextureRadioValue) // if tiling

    {

        SetControlValueByID (window, 'ImAt', kCntlRadioTileToTex, true); //set tile radio to false

        SetControlValueByID (window, 'ImAt', kCntlRadioScaleToTex, false); //set tile radio to false

        // disable scale selection

        controlID.id = kCntlPopUpScale;

        GetControlByID (window, &controlID, &control);

        DeactivateControl (control);

        // enable overlap selection

        controlID.id = kCntlCheckOverlap;

        GetControlByID (window, &controlID, &control);

        ActivateControl (control);

        // enable NPOT textures selection

        controlID.id = kCntlCheckNPOTTextures;

        GetControlByID (window, &controlID, &control);

        ActivateControl (control);

    }

    else

    {

        SetControlValueByID (window, 'ImAt', kCntlRadioTileToTex, false); //set tile radio to false

        SetControlValueByID (window, 'ImAt', kCntlRadioScaleToTex, true); //set tile radio to false

        // disable overlap selection while selected to false

        SetControlValueByID (window, 'ImAt', kCntlCheckOverlap, false); //set tile radio to false

        controlID.id = kCntlCheckOverlap;

        GetControlByID (window, &controlID, &control);

        DeactivateControl (control);

        // disable NPOT Textures selection while selected to false

        SetControlValueByID (window, 'ImAt', kCntlCheckNPOTTextures, false); //set tile radio to false

        controlID.id = kCntlCheckNPOTTextures;

        GetControlByID (window, &controlID, &control);

        DeactivateControl (control);

        // enable scale selection

        controlID.id = kCntlPopUpScale;

        GetControlByID (window, &controlID, &control);

        ActivateControl (control);

    }

    // ensure texture rectangle disabled if not avialable

    if (false == gpOpenGLCaps->f_ext_texture_rectangle)

    {

        // disable NPOT Textures selection

        controlID.id = kCntlCheckNPOTTextures;

        GetControlByID (window, &controlID, &control);

        DeactivateControl (control);

    }

    // set agp texturing option

    if (CheckMacOSX ())

    {

        SetControlValueByID (window, 'ImAt', kCntlRadioAGP, *pfAGPTextures + 1);

    } 

    else

    {

        *pfAGPTextures = false;

        SetControlValueByID (window, 'ImAt', kCntlRadioAGP, *pfAGPTextures + 1);

        controlID.id = kCntlRadioAGP;

        GetControlByID (window, &controlID, &control);

        DeactivateControl (control);

    } 

    ShowWindow (window);

    // run window

    RunAppModalLoopForWindow (window);

    // read values

    *pfAGPTextures = GetControlValueByID (window, 'ImAt', kCntlRadioAGP) - 1;

    *pfClientTextures = GetControlValueByID (window, 'ImAt', kCntlCheckClientTex);

    *pMaxTextureSize = 1 << (GetControlValueByID (window, 'ImAt', kCntlPopUpMaxTex) + 4);

    *pfOverlapTextures = GetControlValueByID (window, 'ImAt', kCntlCheckOverlap);

    *pfNPOTTextures = GetControlValueByID (window, 'ImAt', kCntlCheckNPOTTextures);

    *pTextureScale = GetControlValueByID (window, 'ImAt', kCntlPopUpScale) + 1;

    *pfTileTextures = GetControlValueByID (window, 'ImAt', kCntlRadioTileToTex);

    RemoveEventHandler (ref);

    DisposeEventHandlerUPP (gTexWinEvtHandler);

    DisposeWindow (window);

}