/* 
 * tkMacOSXBitmap.c --
 *
 *        This file handles the implementation of native bitmaps.
 *
 * Copyright (c) 1996-1997 Sun Microsystems, Inc.
 * Copyright 2001, Apple Computer, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tkMacOSXBitmap.c,v 1.2 2002/08/31 06:12:29 das Exp $
 */

#include "tkPort.h"
#include "tk.h"
#include "tkMacOSXInt.h"

#include <Carbon/Carbon.h>
/*
#include <Icons.h>
#include <Dialogs.h>
#include <Resources.h>
#include <Strings.h>
*/

/*
 * Depending on the resource type there are different ways to
 * draw native icons.
 */
#define TYPE1        0        /* Family icon suite. */
#define TYPE2        1        /* ICON resource. */
#define TYPE3        2        /* cicn resource. */

/*
 * This data structure describes the id and type of a given icon.
 * It is used as the source for native icons.
 */
typedef struct {
    int id;                /* Resource Id for Icon. */
    long int type;        /* Type of icon. */
} NativeIcon;

/*
 * This structure holds information about native bitmaps.
 */

typedef struct {
    char *name;                        /* Name of icon. */
    long int type;                /* Type of icon. */
    int id;                        /* Id of icon. */
    int size;                        /* Size of icon. */
} BuiltInIcon;

/*
 * This array mapps a string name to the supported builtin icons
 * on the Macintosh.
 */

static BuiltInIcon builtInIcons[] = {
    {"document",        TYPE1,        kGenericDocumentIconResource,           32},
    {"stationery",      TYPE1,        kGenericStationeryIconResource,         32},
    {"edition",         TYPE1,        kGenericEditionFileIconResource,        32},
    {"application",     TYPE1,        kGenericApplicationIconResource,        32},
    {"accessory",       TYPE1,        kGenericDeskAccessoryIconResource,      32},
    {"folder",          TYPE1,        kGenericFolderIconResource,             32},
    {"pfolder",         TYPE1,        kPrivateFolderIconResource,             32},
    {"trash",           TYPE1,        kTrashIconResource,                     32},
    {"floppy",          TYPE1,        kFloppyIconResource,                    32},
    {"ramdisk",         TYPE1,        kGenericRAMDiskIconResource,            32},
    {"cdrom",           TYPE1,        kGenericCDROMIconResource,              32},
    {"preferences",     TYPE1,        kGenericPreferencesIconResource,        32},
    {"querydoc",        TYPE1,        kGenericQueryDocumentIconResource,      32},
    {"stop",            TYPE2,        kStopIcon,                              32},
    {"note",            TYPE2,        kNoteIcon,                              32},
    {"caution",         TYPE2,        kCautionIcon,                           32},
    {(char *) NULL,        0,        0,                                        0}
};

/*
 *----------------------------------------------------------------------
 *
 * TkpDefineNativeBitmaps --
 *
 *        Add native bitmaps.
 *
 * Results:
 *        A standard Tcl result.  If an error occurs then TCL_ERROR is
 *        returned and a message is left in the interp's result.
 *
 * Side effects:
 *        "Name" is entered into the bitmap table and may be used from
 *        here on to refer to the given bitmap.
 *
 *----------------------------------------------------------------------
 */

void
TkpDefineNativeBitmaps()
{
    int new;
    Tcl_HashEntry *predefHashPtr;
    TkPredefBitmap *predefPtr;
    CONST char * name;
    BuiltInIcon *builtInPtr;
    NativeIcon *nativeIconPtr;
    Tcl_HashTable *tablePtr;
    
    for (builtInPtr = builtInIcons; builtInPtr->name != NULL; builtInPtr++) {
        name = Tk_GetUid(builtInPtr->name);
        tablePtr = TkGetBitmapPredefTable();
        predefHashPtr = Tcl_CreateHashEntry(tablePtr, name, &new);
        if (!new) {
            continue;
        }
        predefPtr = (TkPredefBitmap *) ckalloc(sizeof(TkPredefBitmap));
        nativeIconPtr = (NativeIcon *) ckalloc(sizeof(NativeIcon));
        nativeIconPtr->id = builtInPtr->id;
        nativeIconPtr->type = builtInPtr->type;
        predefPtr->source = (char *) nativeIconPtr;
        predefPtr->width = builtInPtr->size;
        predefPtr->height = builtInPtr->size;
        predefPtr->native = 1;
        Tcl_SetHashValue(predefHashPtr, predefPtr);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkpCreateNativeBitmap --
 *
 *        Add native bitmaps.
 *
 * Results:
 *        A standard Tcl result.  If an error occurs then TCL_ERROR is
 *        returned and a message is left in the interp's result.
 *
 * Side effects:
 *        "Name" is entered into the bitmap table and may be used from
 *        here on to refer to the given bitmap.
 *
 *----------------------------------------------------------------------
 */

Pixmap
TkpCreateNativeBitmap(
    Display *display,
    CONST char * source)                /* Info about the icon to build. */
{
    Pixmap pix;
    GWorldPtr destPort;
    Rect destRect;
    Handle icon;
    CGrafPtr saveWorld;
    GDHandle saveDevice;
    NativeIcon *nativeIconPtr;
    
    pix = Tk_GetPixmap(display, None, 32, 32, 0);
    destPort = TkMacOSXGetDrawablePort(pix);

    GetGWorld(&saveWorld, &saveDevice);
    SetGWorld(destPort, NULL);

    nativeIconPtr = (NativeIcon *) source;
    SetRect(&destRect, 0, 0, 32, 32);
    if (nativeIconPtr->type == TYPE1) {
        RGBColor white = {0xFFFF, 0xFFFF, 0xFFFF};

        RGBForeColor(&white);
        PaintRect(&destRect);
        PlotIconID(&destRect, atAbsoluteCenter, ttNone, nativeIconPtr->id);
    } else if (nativeIconPtr->type == TYPE2) {
        icon = GetIcon(nativeIconPtr->id);
        if (icon != NULL) {
            RGBColor black = {0, 0, 0};
        
            RGBForeColor(&black);
            PlotIcon(&destRect, icon);
            ReleaseResource(icon);
        }
    }

    SetGWorld(saveWorld, saveDevice);
    return pix;
}

/*
 *----------------------------------------------------------------------
 *
 * TkpGetNativeAppBitmap --
 *
 *        Add native bitmaps.
 *
 * Results:
 *        A standard Tcl result.  If an error occurs then TCL_ERROR is
 *        returned and a message is left in the interp's result.
 *
 * Side effects:
 *        "Name" is entered into the bitmap table and may be used from
 *        here on to refer to the given bitmap.
 *
 *----------------------------------------------------------------------
 */

Pixmap
TkpGetNativeAppBitmap(
    Display *display,        /* The display. */
    CONST char *name,        /* The name of the bitmap. */
    int *width,                /* The width & height of the bitmap. */
    int *height)
{
    Pixmap pix;
    CGrafPtr saveWorld;
    GDHandle saveDevice;
    GWorldPtr destPort;
    Rect destRect;
    Handle resource;
    int type = -1, destWrote;
    Str255 nativeName;
    
    /*
     * macRoman is the encoding that the resource fork uses.
     */

    Tcl_UtfToExternal(NULL, Tcl_GetEncoding(NULL, "macRoman"), name,
            strlen(name), 0, NULL, 
            (char *) &nativeName[1],
            255, NULL, &destWrote, NULL); /* Internalize native */
    nativeName[0] = destWrote;

    resource = GetNamedResource('cicn', nativeName);
    if (resource != NULL) {
        type = TYPE3;
    } else {
        resource = GetNamedResource('ICON', nativeName);
        if (resource != NULL) {
            type = TYPE2;
        }
    }
    
    if (resource == NULL) {
        return NULL;
    }
    
    pix = Tk_GetPixmap(display, None, 32, 32, 0);
    destPort = TkMacOSXGetDrawablePort(pix);

    GetGWorld(&saveWorld, &saveDevice);
    SetGWorld(destPort, NULL);
    
    SetRect(&destRect, 0, 0, 32, 32);
    if (type == TYPE2) {
        RGBColor black = {0, 0, 0};
        
        RGBForeColor(&black);
        PlotIcon(&destRect, resource);
        ReleaseResource(resource);
    } else if (type == TYPE3) {
        RGBColor white = {0xFFFF, 0xFFFF, 0xFFFF};
        short id;
        ResType theType;
        Str255 dummy;
        
        /*
         * We need to first paint the background white.  Also, for
         * some reason we *must* use GetCIcon instead of GetNamedResource
         * for PlotCIcon to work - so we use GetResInfo to get the id.
         */
        RGBForeColor(&white);
        PaintRect(&destRect);
        GetResInfo(resource, &id, &theType, dummy);
        ReleaseResource(resource);
        resource = (Handle) GetCIcon(id);
        PlotCIcon(&destRect, (CIconHandle) resource);
        DisposeCIcon((CIconHandle) resource);
    }
    
    *width = 32;
    *height = 32;
    SetGWorld(saveWorld, saveDevice);
    return pix;
}
