/*
 * tkMacOSXBitmap.c --
 *
 *	This file handles the implementation of native bitmaps.
 *
 * Copyright (c) 1996-1997 Sun Microsystems, Inc.
 * Copyright 2001, Apple Computer, Inc.
 * Copyright (c) 2006-2007 Daniel A. Steffen <das@users.sourceforge.net>
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tkMacOSXInt.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 {
    const 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},
    {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(void)
{
    Tcl_HashTable *tablePtr = TkGetBitmapPredefTable();
    BuiltInIcon *builtInPtr;

    for (builtInPtr = builtInIcons; builtInPtr->name != NULL; builtInPtr++) {
	Tcl_HashEntry *predefHashPtr;
	const char * name;
	int isNew;

	name = Tk_GetUid(builtInPtr->name);
	predefHashPtr = Tcl_CreateHashEntry(tablePtr, name, &isNew);
	if (isNew) {
	    TkPredefBitmap *predefPtr = (TkPredefBitmap *)
		    ckalloc(sizeof(TkPredefBitmap));
	    NativeIcon *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;
    Rect destRect;
    CGrafPtr savePort;
    Boolean portChanged;
    const NativeIcon *nativeIconPtr;

    pix = Tk_GetPixmap(display, None, 32, 32, 0);
    portChanged = QDSwapPort(TkMacOSXGetDrawablePort(pix), &savePort);

    nativeIconPtr = (const 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) {
	Handle icon = GetIcon(nativeIconPtr->id);

	if (icon != NULL) {
	    RGBColor black = {0, 0, 0};

	    RGBForeColor(&black);
	    PlotIcon(&destRect, icon);
	    ReleaseResource(icon);
	}
    }

    if (portChanged) {
	QDSwapPort(savePort, NULL);
    }
    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 savePort;
    Boolean portChanged;
    Rect destRect;
    Handle resource;
    int type = -1, destWrote;
    Str255 nativeName;
    Tcl_Encoding encoding;

    /*
     * macRoman is the encoding that the resource fork uses.
     */

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

    resource = GetNamedResource('cicn', nativeName);
    if (resource != NULL) {
	type = TYPE3;
    } else {
	resource = GetNamedResource('ICON', nativeName);
	if (resource != NULL) {
	    type = TYPE2;
	}
    }

    if (resource == NULL) {
	return (Pixmap) NULL;
    }

    pix = Tk_GetPixmap(display, None, 32, 32, 0);
    portChanged = QDSwapPort(TkMacOSXGetDrawablePort(pix), &savePort);

    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;
    if (portChanged) {
	QDSwapPort(savePort, NULL);
    }
    return pix;
}
