/*
|
/*
|
* tkWinImage.c --
|
* tkWinImage.c --
|
*
|
*
|
* This file contains routines for manipulation full-color images.
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* This file contains routines for manipulation full-color images.
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*
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*
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* Copyright (c) 1995 Sun Microsystems, Inc.
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* Copyright (c) 1995 Sun Microsystems, Inc.
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*
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*
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* See the file "license.terms" for information on usage and redistribution
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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*
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* RCS: @(#) $Id: tkWinImage.c,v 1.1.1.1 2002-01-16 10:26:02 markom Exp $
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* RCS: @(#) $Id: tkWinImage.c,v 1.1.1.1 2002-01-16 10:26:02 markom Exp $
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*/
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*/
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|
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#include "tkWinInt.h"
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#include "tkWinInt.h"
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|
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static int DestroyImage _ANSI_ARGS_((XImage* data));
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static int DestroyImage _ANSI_ARGS_((XImage* data));
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static unsigned long ImageGetPixel _ANSI_ARGS_((XImage *image, int x, int y));
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static unsigned long ImageGetPixel _ANSI_ARGS_((XImage *image, int x, int y));
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static int PutPixel _ANSI_ARGS_((XImage *image, int x, int y,
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static int PutPixel _ANSI_ARGS_((XImage *image, int x, int y,
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unsigned long pixel));
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unsigned long pixel));
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|
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/*
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/*
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*----------------------------------------------------------------------
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*----------------------------------------------------------------------
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*
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*
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* DestroyImage --
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* DestroyImage --
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*
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*
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* This is a trivial wrapper around ckfree to make it possible to
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* This is a trivial wrapper around ckfree to make it possible to
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* pass ckfree as a pointer.
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* pass ckfree as a pointer.
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*
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*
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* Results:
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* Results:
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* None.
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* None.
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*
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*
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* Side effects:
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* Side effects:
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* Deallocates the image.
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* Deallocates the image.
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*
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*
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*----------------------------------------------------------------------
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*----------------------------------------------------------------------
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*/
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*/
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|
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int
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int
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DestroyImage(imagePtr)
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DestroyImage(imagePtr)
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XImage *imagePtr; /* image to free */
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XImage *imagePtr; /* image to free */
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{
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{
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if (imagePtr) {
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if (imagePtr) {
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if (imagePtr->data) {
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if (imagePtr->data) {
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ckfree((char*)imagePtr->data);
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ckfree((char*)imagePtr->data);
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}
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}
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ckfree((char*)imagePtr);
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ckfree((char*)imagePtr);
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}
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}
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return 0;
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return 0;
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}
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}
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|
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/*
|
/*
|
*----------------------------------------------------------------------
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*----------------------------------------------------------------------
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*
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*
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* ImageGetPixel --
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* ImageGetPixel --
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*
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*
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* Get a single pixel from an image.
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* Get a single pixel from an image.
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*
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*
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* Results:
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* Results:
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* Returns the 32 bit pixel value.
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* Returns the 32 bit pixel value.
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*
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*
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* Side effects:
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* Side effects:
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* None.
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* None.
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*
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*
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*----------------------------------------------------------------------
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*----------------------------------------------------------------------
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*/
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*/
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|
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unsigned long
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unsigned long
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ImageGetPixel(image, x, y)
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ImageGetPixel(image, x, y)
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XImage *image;
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XImage *image;
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int x, y;
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int x, y;
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{
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{
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unsigned long pixel = 0;
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unsigned long pixel = 0;
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unsigned char *srcPtr = &(image->data[(y * image->bytes_per_line)
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unsigned char *srcPtr = &(image->data[(y * image->bytes_per_line)
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+ ((x * image->bits_per_pixel) / NBBY)]);
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+ ((x * image->bits_per_pixel) / NBBY)]);
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|
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switch (image->bits_per_pixel) {
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switch (image->bits_per_pixel) {
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case 32:
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case 32:
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case 24:
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case 24:
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pixel = RGB(srcPtr[2], srcPtr[1], srcPtr[0]);
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pixel = RGB(srcPtr[2], srcPtr[1], srcPtr[0]);
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break;
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break;
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case 16:
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case 16:
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pixel = RGB(((((WORD*)srcPtr)[0]) >> 7) & 0xf8,
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pixel = RGB(((((WORD*)srcPtr)[0]) >> 7) & 0xf8,
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((((WORD*)srcPtr)[0]) >> 2) & 0xf8,
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((((WORD*)srcPtr)[0]) >> 2) & 0xf8,
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((((WORD*)srcPtr)[0]) << 3) & 0xf8);
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((((WORD*)srcPtr)[0]) << 3) & 0xf8);
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break;
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break;
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case 8:
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case 8:
|
pixel = srcPtr[0];
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pixel = srcPtr[0];
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break;
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break;
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case 4:
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case 4:
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pixel = ((x%2) ? (*srcPtr) : ((*srcPtr) >> 4)) & 0x0f;
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pixel = ((x%2) ? (*srcPtr) : ((*srcPtr) >> 4)) & 0x0f;
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break;
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break;
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case 1:
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case 1:
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pixel = ((*srcPtr) & (0x80 >> (x%8))) ? 1 : 0;
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pixel = ((*srcPtr) & (0x80 >> (x%8))) ? 1 : 0;
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break;
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break;
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}
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}
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return pixel;
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return pixel;
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}
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}
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|
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/*
|
/*
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*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
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*
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* PutPixel --
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* PutPixel --
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*
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*
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* Set a single pixel in an image.
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* Set a single pixel in an image.
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*
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*
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* Results:
|
* Results:
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* None.
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* None.
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*
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*
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* Side effects:
|
* Side effects:
|
* None.
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* None.
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*
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*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
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*/
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|
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static int
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static int
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PutPixel(image, x, y, pixel)
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PutPixel(image, x, y, pixel)
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XImage *image;
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XImage *image;
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int x, y;
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int x, y;
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unsigned long pixel;
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unsigned long pixel;
|
{
|
{
|
unsigned char *destPtr = &(image->data[(y * image->bytes_per_line)
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unsigned char *destPtr = &(image->data[(y * image->bytes_per_line)
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+ ((x * image->bits_per_pixel) / NBBY)]);
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+ ((x * image->bits_per_pixel) / NBBY)]);
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|
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switch (image->bits_per_pixel) {
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switch (image->bits_per_pixel) {
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case 32:
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case 32:
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/*
|
/*
|
* Pixel is DWORD: 0x00BBGGRR
|
* Pixel is DWORD: 0x00BBGGRR
|
*/
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*/
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|
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destPtr[3] = 0;
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destPtr[3] = 0;
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case 24:
|
case 24:
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/*
|
/*
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* Pixel is triplet: 0xBBGGRR.
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* Pixel is triplet: 0xBBGGRR.
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*/
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*/
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|
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destPtr[0] = (unsigned char) GetBValue(pixel);
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destPtr[0] = (unsigned char) GetBValue(pixel);
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destPtr[1] = (unsigned char) GetGValue(pixel);
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destPtr[1] = (unsigned char) GetGValue(pixel);
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destPtr[2] = (unsigned char) GetRValue(pixel);
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destPtr[2] = (unsigned char) GetRValue(pixel);
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break;
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break;
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case 16:
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case 16:
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/*
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/*
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* Pixel is WORD: 5-5-5 (R-G-B)
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* Pixel is WORD: 5-5-5 (R-G-B)
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*/
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*/
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|
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(*(WORD*)destPtr) =
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(*(WORD*)destPtr) =
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((GetRValue(pixel) & 0xf8) << 7)
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((GetRValue(pixel) & 0xf8) << 7)
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| ((GetGValue(pixel) & 0xf8) <<2)
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| ((GetGValue(pixel) & 0xf8) <<2)
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| ((GetBValue(pixel) & 0xf8) >> 3);
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| ((GetBValue(pixel) & 0xf8) >> 3);
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break;
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break;
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case 8:
|
case 8:
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/*
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/*
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* Pixel is 8-bit index into color table.
|
* Pixel is 8-bit index into color table.
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*/
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*/
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|
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(*destPtr) = (unsigned char) pixel;
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(*destPtr) = (unsigned char) pixel;
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break;
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break;
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case 4:
|
case 4:
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/*
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/*
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* Pixel is 4-bit index in MSBFirst order.
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* Pixel is 4-bit index in MSBFirst order.
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*/
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*/
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if (x%2) {
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if (x%2) {
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(*destPtr) = (unsigned char) (((*destPtr) & 0xf0)
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(*destPtr) = (unsigned char) (((*destPtr) & 0xf0)
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| (pixel & 0x0f));
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| (pixel & 0x0f));
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} else {
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} else {
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(*destPtr) = (unsigned char) (((*destPtr) & 0x0f)
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(*destPtr) = (unsigned char) (((*destPtr) & 0x0f)
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| ((pixel << 4) & 0xf0));
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| ((pixel << 4) & 0xf0));
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}
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}
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break;
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break;
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case 1: {
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case 1: {
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/*
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/*
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* Pixel is bit in MSBFirst order.
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* Pixel is bit in MSBFirst order.
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*/
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*/
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int mask = (0x80 >> (x%8));
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int mask = (0x80 >> (x%8));
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if (pixel) {
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if (pixel) {
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(*destPtr) |= mask;
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(*destPtr) |= mask;
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} else {
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} else {
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(*destPtr) &= ~mask;
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(*destPtr) &= ~mask;
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}
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}
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}
|
}
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break;
|
break;
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}
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}
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return 0;
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return 0;
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}
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}
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|
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/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
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*
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*
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* XCreateImage --
|
* XCreateImage --
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*
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*
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* Allocates storage for a new XImage.
|
* Allocates storage for a new XImage.
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*
|
*
|
* Results:
|
* Results:
|
* Returns a newly allocated XImage.
|
* Returns a newly allocated XImage.
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*
|
*
|
* Side effects:
|
* Side effects:
|
* None.
|
* None.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
XImage *
|
XImage *
|
XCreateImage(display, visual, depth, format, offset, data, width, height,
|
XCreateImage(display, visual, depth, format, offset, data, width, height,
|
bitmap_pad, bytes_per_line)
|
bitmap_pad, bytes_per_line)
|
Display* display;
|
Display* display;
|
Visual* visual;
|
Visual* visual;
|
unsigned int depth;
|
unsigned int depth;
|
int format;
|
int format;
|
int offset;
|
int offset;
|
char* data;
|
char* data;
|
unsigned int width;
|
unsigned int width;
|
unsigned int height;
|
unsigned int height;
|
int bitmap_pad;
|
int bitmap_pad;
|
int bytes_per_line;
|
int bytes_per_line;
|
{
|
{
|
XImage* imagePtr = (XImage *) ckalloc(sizeof(XImage));
|
XImage* imagePtr = (XImage *) ckalloc(sizeof(XImage));
|
imagePtr->width = width;
|
imagePtr->width = width;
|
imagePtr->height = height;
|
imagePtr->height = height;
|
imagePtr->xoffset = offset;
|
imagePtr->xoffset = offset;
|
imagePtr->format = format;
|
imagePtr->format = format;
|
imagePtr->data = data;
|
imagePtr->data = data;
|
imagePtr->byte_order = LSBFirst;
|
imagePtr->byte_order = LSBFirst;
|
imagePtr->bitmap_unit = 8;
|
imagePtr->bitmap_unit = 8;
|
imagePtr->bitmap_bit_order = MSBFirst;
|
imagePtr->bitmap_bit_order = MSBFirst;
|
imagePtr->bitmap_pad = bitmap_pad;
|
imagePtr->bitmap_pad = bitmap_pad;
|
imagePtr->bits_per_pixel = depth;
|
imagePtr->bits_per_pixel = depth;
|
imagePtr->depth = depth;
|
imagePtr->depth = depth;
|
|
|
/*
|
/*
|
* Under Windows, bitmap_pad must be on an LONG data-type boundary.
|
* Under Windows, bitmap_pad must be on an LONG data-type boundary.
|
*/
|
*/
|
|
|
#define LONGBITS (sizeof(LONG) * 8)
|
#define LONGBITS (sizeof(LONG) * 8)
|
|
|
bitmap_pad = (bitmap_pad + LONGBITS - 1) / LONGBITS * LONGBITS;
|
bitmap_pad = (bitmap_pad + LONGBITS - 1) / LONGBITS * LONGBITS;
|
|
|
/*
|
/*
|
* Round to the nearest bitmap_pad boundary.
|
* Round to the nearest bitmap_pad boundary.
|
*/
|
*/
|
|
|
if (bytes_per_line) {
|
if (bytes_per_line) {
|
imagePtr->bytes_per_line = bytes_per_line;
|
imagePtr->bytes_per_line = bytes_per_line;
|
} else {
|
} else {
|
imagePtr->bytes_per_line = (((depth * width)
|
imagePtr->bytes_per_line = (((depth * width)
|
+ (bitmap_pad - 1)) >> 3) & ~((bitmap_pad >> 3) - 1);
|
+ (bitmap_pad - 1)) >> 3) & ~((bitmap_pad >> 3) - 1);
|
}
|
}
|
|
|
imagePtr->red_mask = 0;
|
imagePtr->red_mask = 0;
|
imagePtr->green_mask = 0;
|
imagePtr->green_mask = 0;
|
imagePtr->blue_mask = 0;
|
imagePtr->blue_mask = 0;
|
|
|
imagePtr->f.put_pixel = PutPixel;
|
imagePtr->f.put_pixel = PutPixel;
|
imagePtr->f.get_pixel = ImageGetPixel;
|
imagePtr->f.get_pixel = ImageGetPixel;
|
imagePtr->f.destroy_image = DestroyImage;
|
imagePtr->f.destroy_image = DestroyImage;
|
imagePtr->f.create_image = NULL;
|
imagePtr->f.create_image = NULL;
|
imagePtr->f.sub_image = NULL;
|
imagePtr->f.sub_image = NULL;
|
imagePtr->f.add_pixel = NULL;
|
imagePtr->f.add_pixel = NULL;
|
|
|
return imagePtr;
|
return imagePtr;
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* XGetImage --
|
* XGetImage --
|
*
|
*
|
* This function copies data from a pixmap or window into an
|
* This function copies data from a pixmap or window into an
|
* XImage.
|
* XImage.
|
*
|
*
|
* Results:
|
* Results:
|
* Returns a newly allocated image containing the data from the
|
* Returns a newly allocated image containing the data from the
|
* given rectangle of the given drawable.
|
* given rectangle of the given drawable.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* None.
|
* None.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
XImage *
|
XImage *
|
XGetImage(display, d, x, y, width, height, plane_mask, format)
|
XGetImage(display, d, x, y, width, height, plane_mask, format)
|
Display* display;
|
Display* display;
|
Drawable d;
|
Drawable d;
|
int x;
|
int x;
|
int y;
|
int y;
|
unsigned int width;
|
unsigned int width;
|
unsigned int height;
|
unsigned int height;
|
unsigned long plane_mask;
|
unsigned long plane_mask;
|
int format;
|
int format;
|
{
|
{
|
TkWinDrawable *twdPtr = (TkWinDrawable *)d;
|
TkWinDrawable *twdPtr = (TkWinDrawable *)d;
|
XImage *imagePtr;
|
XImage *imagePtr;
|
HDC dc;
|
HDC dc;
|
char infoBuf[sizeof(BITMAPINFO) + sizeof(RGBQUAD)];
|
char infoBuf[sizeof(BITMAPINFO) + sizeof(RGBQUAD)];
|
BITMAPINFO *infoPtr = (BITMAPINFO*)infoBuf;
|
BITMAPINFO *infoPtr = (BITMAPINFO*)infoBuf;
|
|
|
if ((twdPtr->type != TWD_BITMAP) || (twdPtr->bitmap.handle == NULL)
|
if ((twdPtr->type != TWD_BITMAP) || (twdPtr->bitmap.handle == NULL)
|
|| (format != XYPixmap) || (plane_mask != 1)) {
|
|| (format != XYPixmap) || (plane_mask != 1)) {
|
panic("XGetImage: not implemented");
|
panic("XGetImage: not implemented");
|
}
|
}
|
|
|
|
|
imagePtr = XCreateImage(display, NULL, 1, XYBitmap, 0, NULL,
|
imagePtr = XCreateImage(display, NULL, 1, XYBitmap, 0, NULL,
|
width, height, 32, 0);
|
width, height, 32, 0);
|
imagePtr->data = ckalloc(imagePtr->bytes_per_line * imagePtr->height);
|
imagePtr->data = ckalloc(imagePtr->bytes_per_line * imagePtr->height);
|
|
|
dc = GetDC(NULL);
|
dc = GetDC(NULL);
|
|
|
GetDIBits(dc, twdPtr->bitmap.handle, 0, height, NULL,
|
GetDIBits(dc, twdPtr->bitmap.handle, 0, height, NULL,
|
infoPtr, DIB_RGB_COLORS);
|
infoPtr, DIB_RGB_COLORS);
|
|
|
infoPtr->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
|
infoPtr->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
|
infoPtr->bmiHeader.biWidth = width;
|
infoPtr->bmiHeader.biWidth = width;
|
infoPtr->bmiHeader.biHeight = -(LONG)height;
|
infoPtr->bmiHeader.biHeight = -(LONG)height;
|
infoPtr->bmiHeader.biPlanes = 1;
|
infoPtr->bmiHeader.biPlanes = 1;
|
infoPtr->bmiHeader.biBitCount = 1;
|
infoPtr->bmiHeader.biBitCount = 1;
|
infoPtr->bmiHeader.biCompression = BI_RGB;
|
infoPtr->bmiHeader.biCompression = BI_RGB;
|
infoPtr->bmiHeader.biCompression = 0;
|
infoPtr->bmiHeader.biCompression = 0;
|
infoPtr->bmiHeader.biXPelsPerMeter = 0;
|
infoPtr->bmiHeader.biXPelsPerMeter = 0;
|
infoPtr->bmiHeader.biYPelsPerMeter = 0;
|
infoPtr->bmiHeader.biYPelsPerMeter = 0;
|
infoPtr->bmiHeader.biClrUsed = 0;
|
infoPtr->bmiHeader.biClrUsed = 0;
|
infoPtr->bmiHeader.biClrImportant = 0;
|
infoPtr->bmiHeader.biClrImportant = 0;
|
|
|
GetDIBits(dc, twdPtr->bitmap.handle, 0, height, imagePtr->data,
|
GetDIBits(dc, twdPtr->bitmap.handle, 0, height, imagePtr->data,
|
infoPtr, DIB_RGB_COLORS);
|
infoPtr, DIB_RGB_COLORS);
|
ReleaseDC(NULL, dc);
|
ReleaseDC(NULL, dc);
|
|
|
return imagePtr;
|
return imagePtr;
|
}
|
}
|
|
|
