예제 #1
0
void
XDrawLines(
    Display *display,
    Drawable d,
    GC gc,
    XPoint *points,
    int npoints,
    int mode)
{
    HPEN pen;
    TkWinDCState state;
    HDC dc;

    if (d == None) {
	return;
    }

    dc = TkWinGetDrawableDC(display, d, &state);

    pen = SetUpGraphicsPort(gc);
    SetBkMode(dc, TRANSPARENT);
    RenderObject(dc, gc, points, npoints, mode, pen, Polyline);
    DeleteObject(pen);

    TkWinReleaseDrawableDC(d, dc, &state);
}
예제 #2
0
void
XFillPolygon(
    Display *display,
    Drawable d,
    GC gc,
    XPoint *points,
    int npoints,
    int shape,
    int mode)
{
    HPEN pen;
    TkWinDCState state;
    HDC dc;

    if (d == None) {
	return;
    }

    dc = TkWinGetDrawableDC(display, d, &state);

    pen = GetStockObject(NULL_PEN);
    RenderObject(dc, gc, points, npoints, mode, pen, Polygon);

    TkWinReleaseDrawableDC(d, dc, &state);
}
예제 #3
0
파일: ttkWinTheme.c 프로젝트: aosm/tcl
static void TroughElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned int state)
{
    TroughClientData *cd = clientData;
    TkWinDCState dcState;
    HDC hdc = TkWinGetDrawableDC(Tk_Display(tkwin), d, &dcState);
    HBRUSH hbr;
    COLORREF bk, oldbk, oldtxt;

    hbr = SelectObject(hdc, GetSysColorBrush(COLOR_SCROLLBAR));
    bk = GetSysColor(COLOR_3DHIGHLIGHT);
    oldtxt = SetTextColor(hdc, GetSysColor(COLOR_3DFACE));
    oldbk = SetBkColor(hdc, bk);

    /* WAS: if (bk (COLOR_3DHIGHLIGHT) == GetSysColor(COLOR_WINDOW)) ... */
    if (GetSysColor(COLOR_SCROLLBAR) == GetSysColor(COLOR_BTNFACE)) {
	/* Draw using the pattern brush */
	SelectObject(hdc, cd->PatternBrush);
    }

    PatBlt(hdc, b.x, b.y, b.width, b.height, PATCOPY);
    SetBkColor(hdc, oldbk);
    SetTextColor(hdc, oldtxt);
    SelectObject(hdc, hbr);
    TkWinReleaseDrawableDC(d, hdc, &dcState);
}
예제 #4
0
void
XDrawRectangle(
    Display *display,
    Drawable d,
    GC gc,
    int x, int y,
    unsigned int width, unsigned int height)
{
    HPEN pen, oldPen;
    TkWinDCState state;
    HBRUSH oldBrush;
    HDC dc;

    if (d == None) {
	return;
    }

    dc = TkWinGetDrawableDC(display, d, &state);

    pen = SetUpGraphicsPort(gc);
    SetBkMode(dc, TRANSPARENT);
    oldPen = SelectObject(dc, pen);
    oldBrush = SelectObject(dc, GetStockObject(NULL_BRUSH));
    SetROP2(dc, tkpWinRopModes[gc->function]);

    Rectangle(dc, x, y, (int) x+width+1, (int) y+height+1);

    DeleteObject(SelectObject(dc, oldPen));
    SelectObject(dc, oldBrush);
    TkWinReleaseDrawableDC(d, dc, &state);
}
예제 #5
0
파일: ttkWinTheme.c 프로젝트: aosm/tcl
static void ClientElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned int state)
{
    RECT rc = BoxToRect(b);
    TkWinDCState dcState;
    HDC hdc = TkWinGetDrawableDC(Tk_Display(tkwin), d, &dcState);
    DrawEdge(hdc, &rc, EDGE_RAISED, BF_RECT | BF_SOFT);
    TkWinReleaseDrawableDC(d, hdc, &dcState);
}
예제 #6
0
파일: ttkWinTheme.c 프로젝트: aosm/tcl
static void FocusElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned int state)
{
    if (state & TTK_STATE_FOCUS) {
	RECT rc = BoxToRect(b);
	TkWinDCState dcState;
	HDC hdc = TkWinGetDrawableDC(Tk_Display(tkwin), d, &dcState);
    	DrawFocusRect(hdc, &rc);
	TkWinReleaseDrawableDC(d, hdc, &dcState);
    }
}
예제 #7
0
int
XCopyArea(
    Display *display,
    Drawable src,
    Drawable dest,
    GC gc,
    int src_x, int src_y,
    unsigned int width, unsigned int height,
    int dest_x, int dest_y)
{
    HDC srcDC, destDC;
    TkWinDCState srcState, destState;
    TkpClipMask *clipPtr = (TkpClipMask*)gc->clip_mask;

    srcDC = TkWinGetDrawableDC(display, src, &srcState);

    if (src != dest) {
	destDC = TkWinGetDrawableDC(display, dest, &destState);
    } else {
	destDC = srcDC;
    }

    if (clipPtr && clipPtr->type == TKP_CLIP_REGION) {
	SelectClipRgn(destDC, (HRGN) clipPtr->value.region);
	OffsetClipRgn(destDC, gc->clip_x_origin, gc->clip_y_origin);
    }

    BitBlt(destDC, dest_x, dest_y, (int) width, (int) height, srcDC,
	    src_x, src_y, (DWORD) tkpWinBltModes[gc->function]);

    SelectClipRgn(destDC, NULL);

    if (src != dest) {
	TkWinReleaseDrawableDC(dest, destDC, &destState);
    }
    TkWinReleaseDrawableDC(src, srcDC, &srcState);
    return Success;
}
예제 #8
0
파일: ttkWinTheme.c 프로젝트: aosm/tcl
static void FrameControlElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned int state)
{
    FrameControlElementData *elementData = clientData;
    RECT rc = BoxToRect(Ttk_PadBox(b, elementData->margins));
    TkWinDCState dcState;
    HDC hdc = TkWinGetDrawableDC(Tk_Display(tkwin), d, &dcState);

    DrawFrameControl(hdc, &rc,
	elementData->classId,
	elementData->partId|Ttk_StateTableLookup(elementData->stateMap, state));
    TkWinReleaseDrawableDC(d, hdc, &dcState);
}
예제 #9
0
파일: ttkWinTheme.c 프로젝트: aosm/tcl
static void ThumbElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned int state)
{
    RECT rc = BoxToRect(b);
    TkWinDCState dcState;
    HDC hdc;

    /* Windows doesn't show a thumb when the scrollbar is disabled */
    if (state & TTK_STATE_DISABLED)
	return;

    hdc = TkWinGetDrawableDC(Tk_Display(tkwin), d, &dcState);
    DrawEdge(hdc, &rc, EDGE_RAISED, BF_RECT | BF_MIDDLE);
    TkWinReleaseDrawableDC(d, hdc, &dcState);
}
예제 #10
0
파일: ttkWinTheme.c 프로젝트: aosm/tcl
static void FieldElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned int state)
{
    FieldElement *field = elementRecord;
    Tk_3DBorder bg = Tk_Get3DBorderFromObj(tkwin, field->backgroundObj);
    RECT rc = BoxToRect(b);
    TkWinDCState dcState;
    HDC hdc;

    Tk_Fill3DRectangle(
	tkwin, d, bg, b.x, b.y, b.width, b.height, 0, TK_RELIEF_FLAT);

    hdc = TkWinGetDrawableDC(Tk_Display(tkwin), d, &dcState);
    DrawEdge(hdc, &rc, EDGE_SUNKEN, BF_RECT);
    TkWinReleaseDrawableDC(d, hdc, &dcState);
}
예제 #11
0
파일: ttkWinTheme.c 프로젝트: aosm/tcl
	/* @@@ FIX THIS */
static void FillFocusElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned int state)
{
    FillFocusElement *focus = elementRecord;
    if (state & TTK_STATE_FOCUS) {
	RECT rc = BoxToRect(b);
	TkWinDCState dcState;
	XColor *fillColor = Tk_GetColorFromObj(tkwin, focus->fillColorObj);
	GC gc = Tk_GCForColor(fillColor, d);
	HDC hdc;

	XFillRectangle(Tk_Display(tkwin),d,gc, b.x,b.y,b.width,b.height);
	hdc = TkWinGetDrawableDC(Tk_Display(tkwin), d, &dcState);
    	DrawFocusRect(hdc, &rc);
	TkWinReleaseDrawableDC(d, hdc, &dcState);
    }
}
예제 #12
0
파일: ttkWinTheme.c 프로젝트: aosm/tcl
static void BorderElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned int state)
{
    BorderElement *border = elementRecord;
    RECT rc = BoxToRect(b);
    int relief = TK_RELIEF_FLAT;
    TkWinDCState dcState;
    HDC hdc;

    Tk_GetReliefFromObj(NULL, border->reliefObj, &relief);

    if (relief != TK_RELIEF_FLAT) {
	UINT xFlags = (relief == TK_RELIEF_SOLID) ? BF_FLAT : 0;
	hdc = TkWinGetDrawableDC(Tk_Display(tkwin), d, &dcState);
	DrawEdge(hdc, &rc, ReliefToEdge(relief), BF_RECT | xFlags);
	TkWinReleaseDrawableDC(d, hdc, &dcState);
    }
}
예제 #13
0
파일: ttkWinTheme.c 프로젝트: aosm/tcl
static void ButtonBorderElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned int state)
{
    ButtonBorderElement *bd = elementRecord;
    int relief = TK_RELIEF_FLAT;
    int defaultState = TTK_BUTTON_DEFAULT_DISABLED;
    TkWinDCState dcState;
    HDC hdc;
    RECT rc;

    Tk_GetReliefFromObj(NULL, bd->reliefObj, &relief);
    Ttk_GetButtonDefaultStateFromObj(NULL, bd->defaultStateObj, &defaultState);

    if (defaultState == TTK_BUTTON_DEFAULT_ACTIVE) {
	XColor *highlightColor =
	    Tk_GetColorFromObj(tkwin, bd->highlightColorObj);
	GC gc = Tk_GCForColor(highlightColor, d);
	XDrawRectangle(Tk_Display(tkwin), d, gc, b.x,b.y,b.width-1,b.height-1);
    }
    if (defaultState != TTK_BUTTON_DEFAULT_DISABLED) {
	++b.x; ++b.y; b.width -= 2; b.height -= 2;
    }

    hdc = TkWinGetDrawableDC(Tk_Display(tkwin), d, &dcState);

    rc = BoxToRect(b);
    DrawFrameControl(hdc, &rc,
	DFC_BUTTON,	/* classId */
	DFCS_BUTTONPUSH | Ttk_StateTableLookup(pushbutton_statemap, state));

    /* Draw focus ring:
     */
    if (state & TTK_STATE_FOCUS) {
	short int borderWidth = 3;	/* @@@ Use GetSystemMetrics?*/
	rc = BoxToRect(Ttk_PadBox(b, Ttk_UniformPadding(borderWidth)));
    	DrawFocusRect(hdc, &rc);
    }
    TkWinReleaseDrawableDC(d, hdc, &dcState);
}
예제 #14
0
void
XFillRectangles(
    Display *display,
    Drawable d,
    GC gc,
    XRectangle *rectangles,
    int nrectangles)
{
    HDC dc;
    int i;
    RECT rect;
    TkWinDCState state;
    HBRUSH brush, oldBrush;

    if (d == None) {
	return;
    }

    dc = TkWinGetDrawableDC(display, d, &state);
    SetROP2(dc, tkpWinRopModes[gc->function]);
    brush = CreateSolidBrush(gc->foreground);

    if ((gc->fill_style == FillStippled
	    || gc->fill_style == FillOpaqueStippled)
	    && gc->stipple != None) {
	TkWinDrawable *twdPtr = (TkWinDrawable *)gc->stipple;
	HBRUSH stipple;
	HBITMAP oldBitmap, bitmap;
	HDC dcMem;
	HBRUSH bgBrush = CreateSolidBrush(gc->background);

	if (twdPtr->type != TWD_BITMAP) {
	    Tcl_Panic("unexpected drawable type in stipple");
	}

	/*
	 * Select stipple pattern into destination dc.
	 */

	stipple = CreatePatternBrush(twdPtr->bitmap.handle);
	SetBrushOrgEx(dc, gc->ts_x_origin, gc->ts_y_origin, NULL);
	oldBrush = SelectObject(dc, stipple);
	dcMem = CreateCompatibleDC(dc);

	/*
	 * For each rectangle, create a drawing surface which is the size of
	 * the rectangle and fill it with the background color. Then merge the
	 * result with the stipple pattern.
	 */

	for (i = 0; i < nrectangles; i++) {
	    bitmap = CreateCompatibleBitmap(dc, rectangles[i].width,
		    rectangles[i].height);
	    oldBitmap = SelectObject(dcMem, bitmap);
	    rect.left = 0;
	    rect.top = 0;
	    rect.right = rectangles[i].width;
	    rect.bottom = rectangles[i].height;
	    FillRect(dcMem, &rect, brush);
	    BitBlt(dc, rectangles[i].x, rectangles[i].y, rectangles[i].width,
		    rectangles[i].height, dcMem, 0, 0, COPYFG);
	    if (gc->fill_style == FillOpaqueStippled) {
		FillRect(dcMem, &rect, bgBrush);
		BitBlt(dc, rectangles[i].x, rectangles[i].y,
			rectangles[i].width, rectangles[i].height, dcMem,
			0, 0, COPYBG);
	    }
	    SelectObject(dcMem, oldBitmap);
	    DeleteObject(bitmap);
	}

	DeleteDC(dcMem);
	SelectObject(dc, oldBrush);
	DeleteObject(stipple);
	DeleteObject(bgBrush);
    } else {
	if (gc->function == GXcopy) {
	    for (i = 0; i < nrectangles; i++) {
		rect.left = rectangles[i].x;
		rect.right = rect.left + rectangles[i].width;
		rect.top = rectangles[i].y;
		rect.bottom = rect.top + rectangles[i].height;
		FillRect(dc, &rect, brush);
	    }
	} else {
	    HPEN newPen = CreatePen(PS_NULL, 0, gc->foreground);
	    HPEN oldPen = SelectObject(dc, newPen);
	    oldBrush = SelectObject(dc, brush);

	    for (i = 0; i < nrectangles; i++) {
		Rectangle(dc, rectangles[i].x, rectangles[i].y,
		    rectangles[i].x + rectangles[i].width + 1,
		    rectangles[i].y + rectangles[i].height + 1);
	    }

	    SelectObject(dc, oldBrush);
	    SelectObject(dc, oldPen);
	    DeleteObject(newPen);
	}
    }
    DeleteObject(brush);
    TkWinReleaseDrawableDC(d, dc, &state);
}
예제 #15
0
void
TkPutImage(
    unsigned long *colors,	/* Array of pixel values used by this image.
				 * May be NULL. */
    int ncolors,		/* Number of colors used, or 0. */
    Display *display,
    Drawable d,			/* Destination drawable. */
    GC gc,
    XImage *image,		/* Source image. */
    int src_x, int src_y,	/* Offset of subimage. */
    int dest_x, int dest_y,	/* Position of subimage origin in drawable. */
    unsigned int width, unsigned int height)
				/* Dimensions of subimage. */
{
    HDC dc, dcMem;
    TkWinDCState state;
    BITMAPINFO *infoPtr;
    HBITMAP bitmap;
    char *data;

    display->request++;

    dc = TkWinGetDrawableDC(display, d, &state);
    SetROP2(dc, tkpWinRopModes[gc->function]);
    dcMem = CreateCompatibleDC(dc);

    if (image->bits_per_pixel == 1) {
	/*
	 * If the image isn't in the right format, we have to copy it into a
	 * new buffer in MSBFirst and word-aligned format.
	 */

	if ((image->bitmap_bit_order != MSBFirst)
		|| (image->bitmap_pad != sizeof(WORD))) {
	    data = TkAlignImageData(image, sizeof(WORD), MSBFirst);
	    bitmap = CreateBitmap(image->width, image->height, 1, 1, data);
	    ckfree(data);
	} else {
	    bitmap = CreateBitmap(image->width, image->height, 1, 1,
		    image->data);
	}
	SetTextColor(dc, gc->foreground);
	SetBkColor(dc, gc->background);
    } else {
	int i, usePalette;

	/*
	 * Do not use a palette for TrueColor images.
	 */

	usePalette = (image->bits_per_pixel < 16);

	if (usePalette) {
	    infoPtr = (BITMAPINFO *) ckalloc(sizeof(BITMAPINFOHEADER)
		    + sizeof(RGBQUAD)*ncolors);
	} else {
	    infoPtr = (BITMAPINFO *) ckalloc(sizeof(BITMAPINFOHEADER));
	}

	infoPtr->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
	infoPtr->bmiHeader.biWidth = image->width;
	infoPtr->bmiHeader.biHeight = -image->height; /* Top-down order */
	infoPtr->bmiHeader.biPlanes = 1;
	infoPtr->bmiHeader.biBitCount = image->bits_per_pixel;
	infoPtr->bmiHeader.biCompression = BI_RGB;
	infoPtr->bmiHeader.biSizeImage = 0;
	infoPtr->bmiHeader.biXPelsPerMeter = 0;
	infoPtr->bmiHeader.biYPelsPerMeter = 0;
	infoPtr->bmiHeader.biClrImportant = 0;

	if (usePalette) {
	    infoPtr->bmiHeader.biClrUsed = ncolors;
	    for (i = 0; i < ncolors; i++) {
		infoPtr->bmiColors[i].rgbBlue = GetBValue(colors[i]);
		infoPtr->bmiColors[i].rgbGreen = GetGValue(colors[i]);
		infoPtr->bmiColors[i].rgbRed = GetRValue(colors[i]);
		infoPtr->bmiColors[i].rgbReserved = 0;
	    }
	} else {
	    infoPtr->bmiHeader.biClrUsed = 0;
	}
	bitmap = CreateDIBitmap(dc, &infoPtr->bmiHeader, CBM_INIT,
		image->data, infoPtr, DIB_RGB_COLORS);
	ckfree((char *) infoPtr);
    }
    if (!bitmap) {
	Tcl_Panic("Fail to allocate bitmap\n");
	DeleteDC(dcMem);
    	TkWinReleaseDrawableDC(d, dc, &state);
	return;
    }
    bitmap = SelectObject(dcMem, bitmap);
    BitBlt(dc, dest_x, dest_y, (int) width, (int) height, dcMem, src_x, src_y,
	    SRCCOPY);
    DeleteObject(SelectObject(dcMem, bitmap));
    DeleteDC(dcMem);
    TkWinReleaseDrawableDC(d, dc, &state);
}
예제 #16
0
void
XCopyPlane(
    Display *display,
    Drawable src,
    Drawable dest,
    GC gc,
    int src_x, int src_y,
    unsigned int width, unsigned int height,
    int dest_x, int dest_y,
    unsigned long plane)
{
    HDC srcDC, destDC;
    TkWinDCState srcState, destState;
    HBRUSH bgBrush, fgBrush, oldBrush;
    TkpClipMask *clipPtr = (TkpClipMask*)gc->clip_mask;

    display->request++;

    if (plane != 1) {
	Tcl_Panic("Unexpected plane specified for XCopyPlane");
    }

    srcDC = TkWinGetDrawableDC(display, src, &srcState);

    if (src != dest) {
	destDC = TkWinGetDrawableDC(display, dest, &destState);
    } else {
	destDC = srcDC;
    }

    if (clipPtr == NULL || clipPtr->type == TKP_CLIP_REGION) {
	/*
	 * Case 1: opaque bitmaps. Windows handles the conversion from one bit
	 * to multiple bits by setting 0 to the foreground color, and 1 to the
	 * background color (seems backwards, but there you are).
	 */

	if (clipPtr && clipPtr->type == TKP_CLIP_REGION) {
	    SelectClipRgn(destDC, (HRGN) clipPtr->value.region);
	    OffsetClipRgn(destDC, gc->clip_x_origin, gc->clip_y_origin);
	}

	SetBkMode(destDC, OPAQUE);
	SetBkColor(destDC, gc->foreground);
	SetTextColor(destDC, gc->background);
	BitBlt(destDC, dest_x, dest_y, (int) width, (int) height, srcDC,
		src_x, src_y, SRCCOPY);

	SelectClipRgn(destDC, NULL);
    } else if (clipPtr->type == TKP_CLIP_PIXMAP) {
	if (clipPtr->value.pixmap == src) {

	    /*
	     * Case 2: transparent bitmaps are handled by setting the
	     * destination to the foreground color whenever the source pixel
	     * is set.
	     */

	    fgBrush = CreateSolidBrush(gc->foreground);
	    oldBrush = SelectObject(destDC, fgBrush);
	    SetBkColor(destDC, RGB(255,255,255));
	    SetTextColor(destDC, RGB(0,0,0));
	    BitBlt(destDC, dest_x, dest_y, (int) width, (int) height, srcDC,
		    src_x, src_y, MASKPAT);
	    SelectObject(destDC, oldBrush);
	    DeleteObject(fgBrush);
	} else {

	    /*
	     * Case 3: two arbitrary bitmaps. Copy the source rectangle into a
	     * color pixmap. Use the result as a brush when copying the clip
	     * mask into the destination.
	     */

	    HDC memDC, maskDC;
	    HBITMAP bitmap;
	    TkWinDCState maskState;

	    fgBrush = CreateSolidBrush(gc->foreground);
	    bgBrush = CreateSolidBrush(gc->background);
	    maskDC = TkWinGetDrawableDC(display, clipPtr->value.pixmap,
		    &maskState);
	    memDC = CreateCompatibleDC(destDC);
	    bitmap = CreateBitmap((int) width, (int) height, 1, 1, NULL);
	    SelectObject(memDC, bitmap);

	    /*
	     * Set foreground bits. We create a new bitmap containing (source
	     * AND mask), then use it to set the foreground color into the
	     * destination.
	     */

	    BitBlt(memDC, 0, 0, (int) width, (int) height, srcDC, src_x, src_y,
		    SRCCOPY);
	    BitBlt(memDC, 0, 0, (int) width, (int) height, maskDC,
		    dest_x - gc->clip_x_origin, dest_y - gc->clip_y_origin,
		    SRCAND);
	    oldBrush = SelectObject(destDC, fgBrush);
	    BitBlt(destDC, dest_x, dest_y, (int) width, (int) height, memDC,
		    0, 0, MASKPAT);

	    /*
	     * Set background bits. Same as foreground, except we use ((NOT
	     * source) AND mask) and the background brush.
	     */

	    BitBlt(memDC, 0, 0, (int) width, (int) height, srcDC, src_x, src_y,
		    NOTSRCCOPY);
	    BitBlt(memDC, 0, 0, (int) width, (int) height, maskDC,
		    dest_x - gc->clip_x_origin, dest_y - gc->clip_y_origin,
		    SRCAND);
	    SelectObject(destDC, bgBrush);
	    BitBlt(destDC, dest_x, dest_y, (int) width, (int) height, memDC,
		    0, 0, MASKPAT);

	    TkWinReleaseDrawableDC(clipPtr->value.pixmap, maskDC, &maskState);
	    SelectObject(destDC, oldBrush);
	    DeleteDC(memDC);
	    DeleteObject(bitmap);
	    DeleteObject(fgBrush);
	    DeleteObject(bgBrush);
	}
    }
    if (src != dest) {
	TkWinReleaseDrawableDC(dest, destDC, &destState);
    }
    TkWinReleaseDrawableDC(src, srcDC, &srcState);
}
예제 #17
0
static void
DrawOrFillArc(
    Display *display,
    Drawable d,
    GC gc,
    int x, int y,		/* left top */
    unsigned int width, unsigned int height,
    int start,			/* start: three-o'clock (deg*64) */
    int extent,			/* extent: relative (deg*64) */
    int fill)			/* ==0 draw, !=0 fill */
{
    HDC dc;
    HBRUSH brush, oldBrush;
    HPEN pen, oldPen;
    TkWinDCState state;
    int clockwise = (extent < 0); /* non-zero if clockwise */
    int xstart, ystart, xend, yend;
    double radian_start, radian_end, xr, yr;

    if (d == None) {
	return;
    }

    dc = TkWinGetDrawableDC(display, d, &state);

    SetROP2(dc, tkpWinRopModes[gc->function]);

    /*
     * Compute the absolute starting and ending angles in normalized radians.
     * Swap the start and end if drawing clockwise.
     */

    start = start % (64*360);
    if (start < 0) {
	start += (64*360);
    }
    extent = (start+extent) % (64*360);
    if (extent < 0) {
	extent += (64*360);
    }
    if (clockwise) {
	int tmp = start;
	start = extent;
	extent = tmp;
    }
    radian_start = XAngleToRadians(start);
    radian_end = XAngleToRadians(extent);

    /*
     * Now compute points on the radial lines that define the starting and
     * ending angles. Be sure to take into account that the y-coordinate
     * system is inverted.
     */

    xr = x + width / 2.0;
    yr = y + height / 2.0;
    xstart = (int)((xr + cos(radian_start)*width/2.0) + 0.5);
    ystart = (int)((yr + sin(-radian_start)*height/2.0) + 0.5);
    xend = (int)((xr + cos(radian_end)*width/2.0) + 0.5);
    yend = (int)((yr + sin(-radian_end)*height/2.0) + 0.5);

    /*
     * Now draw a filled or open figure. Note that we have to increase the
     * size of the bounding box by one to account for the difference in pixel
     * definitions between X and Windows.
     */

    pen = SetUpGraphicsPort(gc);
    oldPen = SelectObject(dc, pen);
    if (!fill) {
	/*
	 * Note that this call will leave a gap of one pixel at the end of the
	 * arc for thin arcs. We can't use ArcTo because it's only supported
	 * under Windows NT.
	 */

	SetBkMode(dc, TRANSPARENT);
	Arc(dc, x, y, (int) (x+width+1), (int) (y+height+1), xstart, ystart,
		xend, yend);
    } else {
	brush = CreateSolidBrush(gc->foreground);
	oldBrush = SelectObject(dc, brush);
	if (gc->arc_mode == ArcChord) {
	    Chord(dc, x, y, (int) (x+width+1), (int) (y+height+1),
		    xstart, ystart, xend, yend);
	} else if (gc->arc_mode == ArcPieSlice) {
	    Pie(dc, x, y, (int) (x+width+1), (int) (y+height+1),
		    xstart, ystart, xend, yend);
	}
	DeleteObject(SelectObject(dc, oldBrush));
    }
    DeleteObject(SelectObject(dc, oldPen));
    TkWinReleaseDrawableDC(d, dc, &state);
}