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-rw-r--r--win/tkWinImage.c402
1 files changed, 220 insertions, 182 deletions
diff --git a/win/tkWinImage.c b/win/tkWinImage.c
index 9e927fe..8e6ef38 100644
--- a/win/tkWinImage.c
+++ b/win/tkWinImage.c
@@ -1,4 +1,4 @@
-/*
+/*
* tkWinImage.c --
*
* This file contains routines for manipulation full-color images.
@@ -11,18 +11,18 @@
#include "tkWinInt.h"
-static int DestroyImage _ANSI_ARGS_((XImage* data));
-static unsigned long ImageGetPixel _ANSI_ARGS_((XImage *image, int x, int y));
-static int PutPixel _ANSI_ARGS_((XImage *image, int x, int y,
- unsigned long pixel));
+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.
+ * This is a trivial wrapper around ckfree to make it possible to pass
+ * ckfree as a pointer.
*
* Results:
* None.
@@ -34,8 +34,8 @@ static int PutPixel _ANSI_ARGS_((XImage *image, int x, int y,
*/
static int
-DestroyImage(imagePtr)
- XImage *imagePtr; /* image to free */
+DestroyImage(
+ XImage *imagePtr) /* Image to free. */
{
if (imagePtr) {
if (imagePtr->data) {
@@ -63,33 +63,33 @@ DestroyImage(imagePtr)
*/
static unsigned long
-ImageGetPixel(image, x, y)
- XImage *image;
- int x, y;
+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;
+ 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;
}
@@ -111,73 +111,74 @@ ImageGetPixel(image, x, y)
*/
static int
-PutPixel(image, x, y, pixel)
- XImage *image;
- int x, y;
- unsigned long pixel;
+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
- */
+ case 32:
+ /*
+ * Pixel is DWORD: 0x00BBGGRR
+ */
- destPtr[3] = 0;
- case 24:
- /*
- * Pixel is triplet: 0xBBGGRR.
- */
+ 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)
- */
+ 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)
+ (*(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.
- */
+ 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)
+ (*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)
+ } else {
+ (*destPtr) = (unsigned char) (((*destPtr) & 0x0f)
| ((pixel << 4) & 0xf0));
- }
- break;
- case 1: {
- /*
- * Pixel is bit in MSBFirst order.
- */
+ }
+ break;
+ case 1: {
+ /*
+ * Pixel is bit in MSBFirst order.
+ */
- int mask = (0x80 >> (x%8));
- if (pixel) {
- (*destPtr) |= mask;
- } else {
- (*destPtr) &= ~mask;
- }
+ int mask = (0x80 >> (x%8));
+
+ if (pixel) {
+ (*destPtr) |= mask;
+ } else {
+ (*destPtr) &= ~mask;
}
break;
}
+ }
return 0;
}
@@ -198,18 +199,17 @@ PutPixel(image, x, y, pixel)
*/
XImage *
-XCreateImage(display, visual, depth, format, offset, data, width, height,
- bitmap_pad, bytes_per_line)
- 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;
+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 = (XImage *) ckalloc(sizeof(XImage));
imagePtr->width = width;
@@ -253,47 +253,46 @@ XCreateImage(display, visual, depth, format, offset, data, width, height,
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.
+ * 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.
+ * 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.
+ * This procedure is adapted from the XGetImage implementation in TkNT. That
+ * code is Copyright (c) 1994 Software Research Associates, Inc.
*
*----------------------------------------------------------------------
*/
static XImage *
-XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
- Display* display;
- Drawable d;
- int x;
- int y;
- unsigned int width;
- unsigned int height;
- unsigned long plane_mask;
- int format;
+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 = NULL;
+ XImage *ret_image;
HDC hdc, hdcMem;
HBITMAP hbmp, hbmpPrev;
BITMAPINFO *bmInfo = NULL;
- HPALETTE hPal, hPalPrev1, hPalPrev2;
+ HPALETTE hPal, hPalPrev1 = 0, hPalPrev2 = 0;
int size;
unsigned int n;
unsigned int depth;
@@ -303,38 +302,42 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
if (format != ZPixmap) {
TkpDisplayWarning(
- "XGetImageZPixmap: only ZPixmap types are implemented",
- "XGetImageZPixmap Failure");
+ "XGetImageZPixmap: 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, width, height);
+ /*
+ * 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);
- }
+ 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);
- }
+ n = RealizePalette(hdc);
+ if (n > 0) {
+ UpdateColors(hdc);
+ }
}
- ret = BitBlt(hdcMem, 0, 0, width, height, hdc, x, y, SRCCOPY);
+ 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) {
@@ -347,22 +350,23 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
if (depth <= 8) {
size += sizeof(unsigned short) * (1 << depth);
}
- bmInfo = (BITMAPINFO *) 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;
+ bmInfo = (BITMAPINFO *) ckalloc((unsigned)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 = (unsigned char *) ckalloc(bmInfo->bmiHeader.biSizeImage);
if (!data) {
@@ -370,14 +374,17 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
ret_image = NULL;
goto cleanup;
}
- ret_image = XCreateImage(display, NULL, depth, ZPixmap, 0, (char *) data,
- width, height, 32, ((width + 31) >> 3) & ~1);
+ ret_image = XCreateImage(display, NULL, depth, ZPixmap, 0, (char *)data,
+ width, height, 32, (int) ((width + 31) >> 3) & ~1);
if (ret_image == NULL) {
ckfree((char *)data);
goto cleanup;
}
- /* Get the BITMAP info into the Image. */
+ /*
+ * Get the BITMAP info into the Image.
+ */
+
if (GetDIBits(hdcMem, hbmp, 0, height, data, bmInfo,
DIB_PAL_COLORS) == 0) {
ckfree((char *) ret_image->data);
@@ -403,14 +410,17 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
ret_image = NULL;
goto cleanup;
}
- ret_image = XCreateImage(display, NULL, 8, ZPixmap, 0, (char *) data,
- width, height, 8, width);
+ ret_image = XCreateImage(display, NULL, 8, ZPixmap, 0, (char *)data,
+ width, height, 8, (int) width);
if (ret_image == NULL) {
ckfree((char *) data);
goto cleanup;
}
- /* Get the BITMAP info into the Image. */
+ /*
+ * Get the BITMAP info into the Image.
+ */
+
if (GetDIBits(hdcMem, hbmp, 0, height, data, bmInfo,
DIB_PAL_COLORS) == 0) {
ckfree((char *) ret_image->data);
@@ -438,9 +448,12 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
goto cleanup;
}
- /* Get the BITMAP info directly into the Image. */
+ /*
+ * Get the BITMAP info directly into the Image.
+ */
+
if (GetDIBits(hdcMem, hbmp, 0, height, ret_image->data, bmInfo,
- DIB_RGB_COLORS) == 0) {
+ DIB_RGB_COLORS) == 0) {
ckfree((char *) ret_image->data);
ckfree((char *) ret_image);
ret_image = NULL;
@@ -455,7 +468,7 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
goto cleanup;
}
ret_image = XCreateImage(display, NULL, 32, ZPixmap, 0, (char *) data,
- width, height, 0, width * 4);
+ width, height, 0, (int) width * 4);
if (ret_image == NULL) {
ckfree((char *) data);
goto cleanup;
@@ -463,13 +476,14 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
if (depth <= 24) {
/*
- * This used to handle 16 and 24 bpp, but now just handles 24.
- * It can likely be optimized for that. -- hobbs
+ * 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) & ~3);
+ byte_width = ((width * 3 + 3) & ~(unsigned)3);
smallBitBase = (unsigned char *) ckalloc(byte_width * height);
if (!smallBitBase) {
ckfree((char *) ret_image->data);
@@ -479,18 +493,25 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
}
smallBitData = smallBitBase;
- /* Get the BITMAP info into the Image. */
+ /*
+ * Get the BITMAP info into the Image.
+ */
+
if (GetDIBits(hdcMem, hbmp, 0, height, smallBitData, bmInfo,
- DIB_RGB_COLORS) == 0) {
+ DIB_RGB_COLORS) == 0) {
ckfree((char *) ret_image->data);
ckfree((char *) ret_image);
ckfree((char *) smallBitBase);
ret_image = NULL;
goto cleanup;
}
- /* Copy the 24 Bit Pixmap to a 32-Bit one. */
+
+ /*
+ * 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;
+ bigBitData = (unsigned char *) (ret_image->data + h * ret_image->bytes_per_line);
smallBitData = smallBitBase + h * byte_width;
for (w = 0; w < width; w++) {
@@ -500,10 +521,17 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
*bigBitData++ = 0;
}
}
- /* Free the Device contexts, and the Bitmap */
+
+ /*
+ * Free the Device contexts, and the Bitmap.
+ */
+
ckfree((char *) smallBitBase);
} else {
- /* Get the BITMAP info directly into the Image. */
+ /*
+ * Get the BITMAP info directly into the Image.
+ */
+
if (GetDIBits(hdcMem, hbmp, 0, height, ret_image->data, bmInfo,
DIB_RGB_COLORS) == 0) {
ckfree((char *) ret_image->data);
@@ -532,12 +560,11 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
*
* XGetImage --
*
- * This function copies data from a pixmap or window into an
- * XImage.
+ * 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.
+ * Returns a newly allocated image containing the data from the given
+ * rectangle of the given drawable.
*
* Side effects:
* None.
@@ -546,15 +573,13 @@ XGetImageZPixmap(display, d, x, y, width, height, plane_mask, format)
*/
XImage *
-XGetImage(display, d, x, y, width, height, plane_mask, format)
- Display* display;
- Drawable d;
- int x;
- int y;
- unsigned int width;
- unsigned int height;
- unsigned long plane_mask;
- int format;
+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;
@@ -566,26 +591,28 @@ XGetImage(display, d, x, y, width, height, plane_mask, format)
/*
* 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.
+ * 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);
+ 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);
@@ -596,18 +623,19 @@ XGetImage(display, d, x, y, width, height, plane_mask, format)
if (pixel == CLR_INVALID) {
break;
}
- PutPixel(imagePtr, xx, yy, pixel);
+ 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
+ * 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 {
@@ -626,13 +654,15 @@ XGetImage(display, d, x, y, width, height, plane_mask, format)
/*
* 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);
+ imagePtr->data =
+ ckalloc((unsigned) imagePtr->bytes_per_line*imagePtr->height);
dc = GetDC(NULL);
@@ -645,7 +675,7 @@ XGetImage(display, d, x, y, width, height, plane_mask, format)
infoPtr->bmiHeader.biPlanes = 1;
infoPtr->bmiHeader.biBitCount = 1;
infoPtr->bmiHeader.biCompression = BI_RGB;
- infoPtr->bmiHeader.biSizeImage = 0;
+ infoPtr->bmiHeader.biSizeImage = 0;
infoPtr->bmiHeader.biXPelsPerMeter = 0;
infoPtr->bmiHeader.biYPelsPerMeter = 0;
infoPtr->bmiHeader.biClrUsed = 0;
@@ -658,3 +688,11 @@ XGetImage(display, d, x, y, width, height, plane_mask, format)
return imagePtr;
}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
generated by cgit v0.12 at 2024-07-03 08:13:21 (GMT)