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win32X.c

/*
 * Copyright (c) 1996 The Regents of the University of California.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    This product includes software developed by the Network Research
 *    Group at Lawrence Berkeley National Laboratory.
 * 4. Neither the name of the University nor of the Laboratory may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This module contributed by John Brezak <brezak@apollo.hp.com>.
 * January 31, 1996
 */

#ifndef lint
static char rcsid[] =
    "@(#) $Header: win32X.c,v 1.3 96/02/15 19:32:05 van Exp $ (LBL)";
#endif

#include "tkWinInt.h"

XImage *
XGetSubImage(
    Display*            display,
    Drawable            d,
    int                 x,
    int                 y,
    unsigned int  width,
    unsigned int  height,
    unsigned long plane_mask,
    int                 format,
    XImage*       dest_image,
    int                 dest_x,
    int                 dest_y
)
{
    printf("XGetSubImage: not implemented!\n");
    return(NULL);
}

unsigned long *win32Colors;
int win32NColors = 0;

void
XPutImage(
    Display*            display,
    Drawable            d,
    GC                  gc,
    XImage*       image,
    int                 src_x,
    int                 src_y,
    int                 dest_x,
    int                 dest_y,
    unsigned int  width,
    unsigned int  height
)
{
    TkPutImage(win32Colors, win32NColors,
             display, d, gc, image, src_x, src_y, dest_x, dest_y,
             width, height);
}

/*
 * These functions belong in the TkWin port code
 */

/*
 * Translation table between X gc functions and Win32 raster op modes.
 */

static int ropModes[] = {
    R2_BLACK,                 /* GXclear */
    R2_MASKPEN,               /* GXand */
    R2_MASKPENNOT,            /* GXandReverse */
    R2_COPYPEN,               /* GXcopy */
    R2_MASKNOTPEN,            /* GXandInverted */
    R2_NOT,             /* GXnoop */
    R2_XORPEN,                /* GXxor */
    R2_MERGEPEN,        /* GXor */
    R2_NOTMERGEPEN,           /* GXnor */
    R2_NOTXORPEN,       /* GXequiv */
    R2_NOT,             /* GXinvert */
    R2_MERGEPENNOT,           /* GXorReverse */
    R2_NOTCOPYPEN,            /* GXcopyInverted */
    R2_MERGENOTPEN,           /* GXorInverted */
    R2_NOTMASKPEN,            /* GXnand */
    R2_WHITE                  /* GXset */
};

/*
 *----------------------------------------------------------------------
 *
 * XClearArea --
 *
 *    Clears the specified area in the window to the current
 *    background color.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Erases the specified area of the window.
 *
 *----------------------------------------------------------------------
 */
void
XClearArea(display, w, x ,y, width, height, exposures)
    Display* display;
    Window w;
    int x;
    int y;
    unsigned int width;
    unsigned int height;
    Bool exposures;
{
    RECT rc;
    HBRUSH brush;
    HPALETTE oldPalette, palette;
    TkWindow *winPtr;
    HWND hwnd = TkWinGetHWND(w);
    HDC dc = GetDC(hwnd);

    palette = TkWinGetPalette(display->screens[0].cmap);
    oldPalette = SelectPalette(dc, palette, FALSE);

    display->request++;

    winPtr = TkWinGetWinPtr(w);
    brush = CreateSolidBrush(winPtr->atts.background_pixel);
    GetWindowRect(hwnd, &rc);
    rc.right = rc.right - rc.left;
    rc.bottom = rc.bottom - rc.top;
    rc.left = rc.top = 0;

    if (width!=0) {
      rc.left=(LONG)x;
      rc.right=(LONG)(x + width + 1);
    }

    if (height !=0) {
      rc.top=(LONG)y;
      rc.bottom=(LONG)(y + height + 1);
    }

    FillRect(dc, &rc, brush);

    DeleteObject(brush);
    SelectPalette(dc, oldPalette, TRUE);
    ReleaseDC(hwnd, dc);
}

/*
 *----------------------------------------------------------------------
 *
 * XDrawSegments --
 *
 *    Draw line segments
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Renders a series of line segments.
 * 
 * WARNING - stippled fill styles are not implemented.
 *
 *----------------------------------------------------------------------
 */

void
XDrawSegments(display, d, gc, segments, nsegments)
    Display* display;
    Drawable d;
    GC gc;
    XSegment* segments;
    int nsegments;
{
    HPEN pen;
    TkWinDCState state;
    HDC dc;
    HPEN oldPen;
    HBRUSH oldBrush;
    int n;
    
    if (d == None) {
      return;
    }

    if ((gc->fill_style == FillStippled
          || gc->fill_style == FillOpaqueStippled)
          && gc->stipple != None) {

      panic("XDrawSegments: unimplemented stippled style");
    }

    dc = TkWinGetDrawableDC(display, d, &state);
    pen = CreatePen(PS_SOLID, gc->line_width, gc->foreground);

    oldPen = SelectObject(dc, pen);
    oldBrush = SelectObject(dc, CreateSolidBrush(gc->foreground));
    SetROP2(dc, ropModes[gc->function]);

    SetPolyFillMode(dc, (gc->fill_rule == EvenOddRule) ? ALTERNATE
                : WINDING);

    for (n = 0; n < nsegments; n++) {
      MoveToEx(dc, (segments+n)->x1, (segments+n)->y1, NULL);
      LineTo(dc, (segments+n)->x2, (segments+n)->y2);
    }

    SelectObject(dc, oldPen);

    DeleteObject(SelectObject(dc, oldBrush));
    DeleteObject(pen);
    
    TkWinReleaseDrawableDC(d, dc, &state);
}

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