Merge commit '6b095f3c8521ca7215e6ff5dcbada52b197ef7d0' as 'tk8.6'

1 files changed, 696 insertions, 0 deletions

diff --git a/tk8.6/win/tkWinImage.c b/tk8.6/win/tkWinImage.c
new file mode 100644
index 0000000..d61b84a
--- /dev/null
+++ b/tk8.6/win/tkWinImage.c
@@ -0,0 +1,696 @@
+/*
+ * tkWinImage.c --
+ *
+ *	This file contains routines for manipulation full-color images.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tkWinInt.h"
+
+static int		DestroyImage(XImage* data);
+static unsigned long	ImageGetPixel(XImage *image, int x, int y);
+static int		PutPixel(XImage *image, int x, int y,
+			    unsigned long pixel);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DestroyImage --
+ *
+ *	This is a trivial wrapper around ckfree to make it possible to pass
+ *	ckfree as a pointer.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Deallocates the image.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DestroyImage(
+    XImage *imagePtr)		/* Image to free. */
+{
+    if (imagePtr) {
+	if (imagePtr->data) {
+	    ckfree(imagePtr->data);
+	}
+	ckfree(imagePtr);
+    }
+    return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ImageGetPixel --
+ *
+ *	Get a single pixel from an image.
+ *
+ * Results:
+ *	Returns the 32 bit pixel value.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static unsigned long
+ImageGetPixel(
+    XImage *image,
+    int x, int y)
+{
+    unsigned long pixel = 0;
+    unsigned char *srcPtr = (unsigned char *) &(image->data[(y * image->bytes_per_line)
+	    + ((x * image->bits_per_pixel) / NBBY)]);
+
+    switch (image->bits_per_pixel) {
+    case 32:
+    case 24:
+	pixel = RGB(srcPtr[2], srcPtr[1], srcPtr[0]);
+	break;
+    case 16:
+	pixel = RGB(((((WORD*)srcPtr)[0]) >> 7) & 0xf8,
+		((((WORD*)srcPtr)[0]) >> 2) & 0xf8,
+		((((WORD*)srcPtr)[0]) << 3) & 0xf8);
+	break;
+    case 8:
+	pixel = srcPtr[0];
+	break;
+    case 4:
+	pixel = ((x%2) ? (*srcPtr) : ((*srcPtr) >> 4)) & 0x0f;
+	break;
+    case 1:
+	pixel = ((*srcPtr) & (0x80 >> (x%8))) ? 1 : 0;
+	break;
+    }
+    return pixel;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PutPixel --
+ *
+ *	Set a single pixel in an image.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PutPixel(
+    XImage *image,
+    int x, int y,
+    unsigned long pixel)
+{
+    unsigned char *destPtr = (unsigned char *) &(image->data[(y * image->bytes_per_line)
+	    + ((x * image->bits_per_pixel) / NBBY)]);
+
+    switch  (image->bits_per_pixel) {
+    case 32:
+	/*
+	 * Pixel is DWORD: 0x00BBGGRR
+	 */
+
+	destPtr[3] = 0;
+    case 24:
+	/*
+	 * Pixel is triplet: 0xBBGGRR.
+	 */
+
+	destPtr[0] = (unsigned char) GetBValue(pixel);
+	destPtr[1] = (unsigned char) GetGValue(pixel);
+	destPtr[2] = (unsigned char) GetRValue(pixel);
+	break;
+    case 16:
+	/*
+	 * Pixel is WORD: 5-5-5 (R-G-B)
+	 */
+
+	(*(WORD*)destPtr) = ((GetRValue(pixel) & 0xf8) << 7)
+		| ((GetGValue(pixel) & 0xf8) <<2)
+		| ((GetBValue(pixel) & 0xf8) >> 3);
+	break;
+    case 8:
+	/*
+	 * Pixel is 8-bit index into color table.
+	 */
+
+	(*destPtr) = (unsigned char) pixel;
+	break;
+    case 4:
+	/*
+	 * Pixel is 4-bit index in MSBFirst order.
+	 */
+
+	if (x%2) {
+	    (*destPtr) = (unsigned char) (((*destPtr) & 0xf0)
+		    | (pixel & 0x0f));
+	} else {
+	    (*destPtr) = (unsigned char) (((*destPtr) & 0x0f)
+		    | ((pixel << 4) & 0xf0));
+	}
+	break;
+    case 1: {
+	/*
+	 * Pixel is bit in MSBFirst order.
+	 */
+
+	int mask = (0x80 >> (x%8));
+
+	if (pixel) {
+	    (*destPtr) |= mask;
+	} else {
+	    (*destPtr) &= ~mask;
+	}
+	break;
+    }
+    }
+    return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XCreateImage --
+ *
+ *	Allocates storage for a new XImage.
+ *
+ * Results:
+ *	Returns a newly allocated XImage.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+XImage *
+XCreateImage(
+    Display *display,
+    Visual *visual,
+    unsigned int depth,
+    int format,
+    int offset,
+    char *data,
+    unsigned int width,
+    unsigned int height,
+    int bitmap_pad,
+    int bytes_per_line)
+{
+    XImage* imagePtr = ckalloc(sizeof(XImage));
+    imagePtr->width = width;
+    imagePtr->height = height;
+    imagePtr->xoffset = offset;
+    imagePtr->format = format;
+    imagePtr->data = data;
+    imagePtr->byte_order = LSBFirst;
+    imagePtr->bitmap_unit = 8;
+    imagePtr->bitmap_bit_order = LSBFirst;
+    imagePtr->bitmap_pad = bitmap_pad;
+    imagePtr->bits_per_pixel = depth;
+    imagePtr->depth = depth;
+
+    /*
+     * Under Windows, bitmap_pad must be on an LONG data-type boundary.
+     */
+
+#define LONGBITS    (sizeof(LONG) * 8)
+
+    bitmap_pad = (bitmap_pad + LONGBITS - 1) / LONGBITS * LONGBITS;
+
+    /*
+     * Round to the nearest bitmap_pad boundary.
+     */
+
+    if (bytes_per_line) {
+	imagePtr->bytes_per_line = bytes_per_line;
+    } else {
+	imagePtr->bytes_per_line = (((depth * width)
+		+ (bitmap_pad - 1)) >> 3) & ~((bitmap_pad >> 3) - 1);
+    }
+
+    imagePtr->red_mask = 0;
+    imagePtr->green_mask = 0;
+    imagePtr->blue_mask = 0;
+
+    imagePtr->f.put_pixel = PutPixel;
+    imagePtr->f.get_pixel = ImageGetPixel;
+    imagePtr->f.destroy_image = DestroyImage;
+    imagePtr->f.create_image = NULL;
+    imagePtr->f.sub_image = NULL;
+    imagePtr->f.add_pixel = NULL;
+
+    return imagePtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XGetImageZPixmap --
+ *
+ *	This function copies data from a pixmap or window into an XImage. This
+ *	handles the ZPixmap case only.
+ *
+ * Results:
+ *	Returns a newly allocated image containing the data from the given
+ *	rectangle of the given drawable.
+ *
+ * Side effects:
+ *	None.
+ *
+ * This procedure is adapted from the XGetImage implementation in TkNT. That
+ * code is Copyright (c) 1994 Software Research Associates, Inc.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static XImage *
+XGetImageZPixmap(
+    Display *display,
+    Drawable d,
+    int x, int y,
+    unsigned int width, unsigned int height,
+    unsigned long plane_mask,
+    int	format)
+{
+    TkWinDrawable *twdPtr = (TkWinDrawable *)d;
+    XImage *ret_image;
+    HDC hdc, hdcMem;
+    HBITMAP hbmp, hbmpPrev;
+    BITMAPINFO *bmInfo = NULL;
+    HPALETTE hPal, hPalPrev1 = 0, hPalPrev2 = 0;
+    int size;
+    unsigned int n;
+    unsigned int depth;
+    unsigned char *data;
+    TkWinDCState state;
+    BOOL ret;
+
+    if (format != ZPixmap) {
+	TkpDisplayWarning("Only ZPixmap types are implemented",
+		"XGetImageZPixmap Failure");
+	return NULL;
+    }
+
+    hdc = TkWinGetDrawableDC(display, d, &state);
+
+    /*
+     * Need to do a Blt operation to copy into a new bitmap.
+     */
+
+    hbmp = CreateCompatibleBitmap(hdc, (int) width, (int) height);
+    hdcMem = CreateCompatibleDC(hdc);
+    hbmpPrev = SelectObject(hdcMem, hbmp);
+    hPal = state.palette;
+    if (hPal) {
+	hPalPrev1 = SelectPalette(hdcMem, hPal, FALSE);
+	n = RealizePalette(hdcMem);
+	if (n > 0) {
+	    UpdateColors(hdcMem);
+	}
+	hPalPrev2 = SelectPalette(hdc, hPal, FALSE);
+	n = RealizePalette(hdc);
+	if (n > 0) {
+	    UpdateColors(hdc);
+	}
+    }
+
+    ret = BitBlt(hdcMem, 0, 0, (int) width, (int) height, hdc, x, y, SRCCOPY);
+    if (hPal) {
+	SelectPalette(hdc, hPalPrev2, FALSE);
+    }
+    SelectObject(hdcMem, hbmpPrev);
+    TkWinReleaseDrawableDC(d, hdc, &state);
+    if (ret == FALSE) {
+	ret_image = NULL;
+	goto cleanup;
+    }
+    if (twdPtr->type == TWD_WINDOW) {
+	depth = Tk_Depth((Tk_Window) twdPtr->window.winPtr);
+    } else {
+	depth = twdPtr->bitmap.depth;
+    }
+
+    size = sizeof(BITMAPINFO);
+    if (depth <= 8) {
+	size += sizeof(unsigned short) * (1 << depth);
+    }
+    bmInfo = ckalloc(size);
+
+    bmInfo->bmiHeader.biSize		= sizeof(BITMAPINFOHEADER);
+    bmInfo->bmiHeader.biWidth		= width;
+    bmInfo->bmiHeader.biHeight		= -(int) height;
+    bmInfo->bmiHeader.biPlanes		= 1;
+    bmInfo->bmiHeader.biBitCount	= depth;
+    bmInfo->bmiHeader.biCompression	= BI_RGB;
+    bmInfo->bmiHeader.biSizeImage	= 0;
+    bmInfo->bmiHeader.biXPelsPerMeter	= 0;
+    bmInfo->bmiHeader.biYPelsPerMeter	= 0;
+    bmInfo->bmiHeader.biClrUsed		= 0;
+    bmInfo->bmiHeader.biClrImportant	= 0;
+
+    if (depth == 1) {
+	unsigned char *p, *pend;
+
+	GetDIBits(hdcMem, hbmp, 0, height, NULL, bmInfo, DIB_PAL_COLORS);
+	data = ckalloc(bmInfo->bmiHeader.biSizeImage);
+	if (!data) {
+	    /* printf("Failed to allocate data area for XImage.\n"); */
+	    ret_image = NULL;
+	    goto cleanup;
+	}
+	ret_image = XCreateImage(display, NULL, depth, ZPixmap, 0, (char *) data,
+		width, height, 32, (int) ((width + 31) >> 3) & ~1);
+	if (ret_image == NULL) {
+	    ckfree(data);
+	    goto cleanup;
+	}
+
+	/*
+	 * Get the BITMAP info into the Image.
+	 */
+
+	if (GetDIBits(hdcMem, hbmp, 0, height, data, bmInfo,
+		DIB_PAL_COLORS) == 0) {
+	    ckfree(ret_image->data);
+	    ckfree(ret_image);
+	    ret_image = NULL;
+	    goto cleanup;
+	}
+	p = data;
+	pend = data + bmInfo->bmiHeader.biSizeImage;
+	while (p < pend) {
+	    *p = ~*p;
+	    p++;
+	}
+    } else if (depth == 8) {
+	unsigned short *palette;
+	unsigned int i;
+	unsigned char *p;
+
+	GetDIBits(hdcMem, hbmp, 0, height, NULL, bmInfo, DIB_PAL_COLORS);
+	data = ckalloc(bmInfo->bmiHeader.biSizeImage);
+	if (!data) {
+	    /* printf("Failed to allocate data area for XImage.\n"); */
+	    ret_image = NULL;
+	    goto cleanup;
+	}
+	ret_image = XCreateImage(display, NULL, 8, ZPixmap, 0, (char *) data,
+		width, height, 8, (int) width);
+	if (ret_image == NULL) {
+	    ckfree(data);
+	    goto cleanup;
+	}
+
+	/*
+	 * Get the BITMAP info into the Image.
+	 */
+
+	if (GetDIBits(hdcMem, hbmp, 0, height, data, bmInfo,
+		DIB_PAL_COLORS) == 0) {
+	    ckfree(ret_image->data);
+	    ckfree(ret_image);
+	    ret_image = NULL;
+	    goto cleanup;
+	}
+	p = data;
+	palette = (unsigned short *) bmInfo->bmiColors;
+	for (i = 0; i < bmInfo->bmiHeader.biSizeImage; i++, p++) {
+	    *p = (unsigned char) palette[*p];
+	}
+    } else if (depth == 16) {
+	GetDIBits(hdcMem, hbmp, 0, height, NULL, bmInfo, DIB_RGB_COLORS);
+	data = ckalloc(bmInfo->bmiHeader.biSizeImage);
+	if (!data) {
+	    /* printf("Failed to allocate data area for XImage.\n"); */
+	    ret_image = NULL;
+	    goto cleanup;
+	}
+	ret_image = XCreateImage(display, NULL, 16, ZPixmap, 0, (char *) data,
+		width, height, 16, 0 /* will be calc'ed from bitmap_pad */);
+	if (ret_image == NULL) {
+	    ckfree(data);
+	    goto cleanup;
+	}
+
+	/*
+	 * Get the BITMAP info directly into the Image.
+	 */
+
+	if (GetDIBits(hdcMem, hbmp, 0, height, ret_image->data, bmInfo,
+		DIB_RGB_COLORS) == 0) {
+	    ckfree(ret_image->data);
+	    ckfree(ret_image);
+	    ret_image = NULL;
+	    goto cleanup;
+	}
+    } else {
+	GetDIBits(hdcMem, hbmp, 0, height, NULL, bmInfo, DIB_RGB_COLORS);
+	data = ckalloc(width * height * 4);
+	if (!data) {
+	    /* printf("Failed to allocate data area for XImage.\n"); */
+	    ret_image = NULL;
+	    goto cleanup;
+	}
+	ret_image = XCreateImage(display, NULL, 32, ZPixmap, 0, (char *) data,
+		width, height, 0, (int) width * 4);
+	if (ret_image == NULL) {
+	    ckfree(data);
+	    goto cleanup;
+	}
+
+	if (depth <= 24) {
+	    /*
+	     * This used to handle 16 and 24 bpp, but now just handles 24. It
+	     * can likely be optimized for that. -- hobbs
+	     */
+
+	    unsigned char *smallBitData, *smallBitBase, *bigBitData;
+	    unsigned int byte_width, h, w;
+
+	    byte_width = ((width * 3 + 3) & ~(unsigned)3);
+	    smallBitBase = ckalloc(byte_width * height);
+	    if (!smallBitBase) {
+		ckfree(ret_image->data);
+		ckfree(ret_image);
+		ret_image = NULL;
+		goto cleanup;
+	    }
+	    smallBitData = smallBitBase;
+
+	    /*
+	     * Get the BITMAP info into the Image.
+	     */
+
+	    if (GetDIBits(hdcMem, hbmp, 0, height, smallBitData, bmInfo,
+		    DIB_RGB_COLORS) == 0) {
+		ckfree(ret_image->data);
+		ckfree(ret_image);
+		ckfree(smallBitBase);
+		ret_image = NULL;
+		goto cleanup;
+	    }
+
+	    /*
+	     * Copy the 24 Bit Pixmap to a 32-Bit one.
+	     */
+
+	    for (h = 0; h < height; h++) {
+		bigBitData   = (unsigned char *) ret_image->data + h * ret_image->bytes_per_line;
+		smallBitData = smallBitBase + h * byte_width;
+
+		for (w = 0; w < width; w++) {
+		    *bigBitData++ = ((*smallBitData++));
+		    *bigBitData++ = ((*smallBitData++));
+		    *bigBitData++ = ((*smallBitData++));
+		    *bigBitData++ = 0;
+		}
+	    }
+
+	    /*
+	     * Free the Device contexts, and the Bitmap.
+	     */
+
+	    ckfree(smallBitBase);
+	} else {
+	    /*
+	     * Get the BITMAP info directly into the Image.
+	     */
+
+	    if (GetDIBits(hdcMem, hbmp, 0, height, ret_image->data, bmInfo,
+		    DIB_RGB_COLORS) == 0) {
+		ckfree(ret_image->data);
+		ckfree(ret_image);
+		ret_image = NULL;
+		goto cleanup;
+	    }
+	}
+    }
+
+  cleanup:
+    if (bmInfo) {
+	ckfree(bmInfo);
+    }
+    if (hPal) {
+	SelectPalette(hdcMem, hPalPrev1, FALSE);
+    }
+    DeleteDC(hdcMem);
+    DeleteObject(hbmp);
+
+    return ret_image;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XGetImage --
+ *
+ *	This function copies data from a pixmap or window into an XImage.
+ *
+ * Results:
+ *	Returns a newly allocated image containing the data from the given
+ *	rectangle of the given drawable.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+XImage *
+XGetImage(
+    Display* display,
+    Drawable d,
+    int x, int y,
+    unsigned int width, unsigned int height,
+    unsigned long plane_mask,
+    int	format)
+{
+    TkWinDrawable *twdPtr = (TkWinDrawable *)d;
+    XImage *imagePtr;
+    HDC dc;
+
+    display->request++;
+
+    if (twdPtr == NULL) {
+	/*
+	 * Avoid unmapped windows or bad drawables
+	 */
+
+	return NULL;
+    }
+
+    if (twdPtr->type != TWD_BITMAP) {
+	/*
+	 * This handles TWD_WINDOW or TWD_WINDC, always creating a 32bit
+	 * image. If the window being copied isn't visible (unmapped or
+	 * obscured), we quietly stop copying (no user error). The user will
+	 * see black where the widget should be. This branch is likely
+	 * followed in favor of XGetImageZPixmap as postscript printed widgets
+	 * require RGB data.
+	 */
+
+	TkWinDCState state;
+	unsigned int xx, yy, size;
+	COLORREF pixel;
+
+	dc = TkWinGetDrawableDC(display, d, &state);
+
+	imagePtr = XCreateImage(display, NULL, 32, format, 0, NULL,
+		width, height, 32, 0);
+	size = imagePtr->bytes_per_line * imagePtr->height;
+	imagePtr->data = ckalloc(size);
+	ZeroMemory(imagePtr->data, size);
+
+	for (yy = 0; yy < height; yy++) {
+	    for (xx = 0; xx < width; xx++) {
+		pixel = GetPixel(dc, x+(int)xx, y+(int)yy);
+		if (pixel == CLR_INVALID) {
+		    break;
+		}
+		PutPixel(imagePtr, (int) xx, (int) yy, pixel);
+	    }
+	}
+
+	TkWinReleaseDrawableDC(d, dc, &state);
+    } else if (format == ZPixmap) {
+	/*
+	 * This actually handles most TWD_WINDOW requests, but it varies from
+	 * the above in that it really does a screen capture of an area, which
+	 * is consistent with the Unix behavior, but does not appear to handle
+	 * all bit depths correctly. -- hobbs
+	 */
+
+	imagePtr = XGetImageZPixmap(display, d, x, y,
+		width, height, plane_mask, format);
+    } else {
+	const char *errMsg = NULL;
+	char infoBuf[sizeof(BITMAPINFO) + sizeof(RGBQUAD)];
+	BITMAPINFO *infoPtr = (BITMAPINFO*)infoBuf;
+
+	if (twdPtr->bitmap.handle == NULL) {
+	    errMsg = "XGetImage: not implemented for empty bitmap handles";
+	} else if (format != XYPixmap) {
+	    errMsg = "XGetImage: not implemented for format != XYPixmap";
+	} else if (plane_mask != 1) {
+	    errMsg = "XGetImage: not implemented for plane_mask != 1";
+	}
+	if (errMsg != NULL) {
+	    /*
+	     * Do a soft warning for the unsupported XGetImage types.
+	     */
+
+	    TkpDisplayWarning(errMsg, "XGetImage Failure");
+	    return NULL;
+	}
+
+	imagePtr = XCreateImage(display, NULL, 1, XYBitmap, 0, NULL,
+		width, height, 32, 0);
+	imagePtr->data = ckalloc(imagePtr->bytes_per_line * imagePtr->height);
+
+	dc = GetDC(NULL);
+
+	GetDIBits(dc, twdPtr->bitmap.handle, 0, height, NULL,
+		infoPtr, DIB_RGB_COLORS);
+
+	infoPtr->bmiHeader.biSize		= sizeof(BITMAPINFOHEADER);
+	infoPtr->bmiHeader.biWidth		= width;
+	infoPtr->bmiHeader.biHeight		= -(LONG)height;
+	infoPtr->bmiHeader.biPlanes		= 1;
+	infoPtr->bmiHeader.biBitCount		= 1;
+	infoPtr->bmiHeader.biCompression	= BI_RGB;
+	infoPtr->bmiHeader.biSizeImage		= 0;
+	infoPtr->bmiHeader.biXPelsPerMeter	= 0;
+	infoPtr->bmiHeader.biYPelsPerMeter	= 0;
+	infoPtr->bmiHeader.biClrUsed		= 0;
+	infoPtr->bmiHeader.biClrImportant	= 0;
+
+	GetDIBits(dc, twdPtr->bitmap.handle, 0, height, imagePtr->data,
+		infoPtr, DIB_RGB_COLORS);
+	ReleaseDC(NULL, dc);
+    }
+
+    return imagePtr;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */