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/************************************************************************/
/* */
/* Make XImages and/or Pixmaps from a bitmap. */
/* */
/* GTK specific code. */
/* */
/************************************************************************/
# include "appFrameConfig.h"
# include <stddef.h>
# include <stdio.h>
# include <stdlib.h>
# include "appImage.h"
# include <appDebugon.h>
# ifdef USE_GTK
/************************************************************************/
/* */
/* Make a pixmap from a picture. */
/* */
/* 2) Make sure that at least the 222 colors are available. */
/* 2a) Allocate an array of XColors and initialise it. */
/* 3) Fill dither tables. */
/* 4) Fill an XImage, the way depends on the bitmap. */
/* 5) Store it in a Pixmap. */
/* */
/************************************************************************/
int appImgMakeImage( AppDrawingData * add,
APP_IMAGE ** pPimage,
int toWide,
int toHigh,
AppColors * ac,
AppBitmapImage * abi )
{
GdkVisual * vis= gdk_visual_get_system();
int depth= vis->depth;
const BitmapDescription * bdIn= &(abi->abiBitmap);
const unsigned char * bufferIn= abi->abiBuffer;
unsigned char * bufferOut;
BitmapDescription bdOut;
APP_IMAGE * xim;
int pad= 8;
int col;
unsigned int one= 1;
int bitmapUnit= 0;
int swapBitmapBytes= 0;
int swapBitmapBits= 0;
bmInitDescription ( &bdOut );
bdOut.bdPixelsWide= toWide;
bdOut.bdPixelsHigh= toHigh;
bdOut.bdHasAlpha= 0;
bdOut.bdXResolution= 1;
bdOut.bdYResolution= 1;
bdOut.bdUnit= BMunPIXEL;
if ( ac->acVisualClass == GDK_VISUAL_TRUE_COLOR ||
ac->acVisualClass == GDK_VISUAL_DIRECT_COLOR )
{
xim= gdk_image_new( GDK_IMAGE_FASTEST, vis, toWide, toHigh );
if ( ! xim )
{ LDEB(xim); return -1; }
bufferOut= xim->mem;
bdOut.bdBytesPerRow= xim->bpl;
bdOut.bdBufferLength= toHigh* bdOut.bdBytesPerRow;
bdOut.bdBitsPerSample= depth/ 3;
bdOut.bdSamplesPerPixel= 3;
bdOut.bdBitsPerPixel= 8* xim->bpp;
bdOut.bdColorEncoding= BMcoRGB;
bdOut.bdColorCount= 0;
}
else{
switch( depth )
{
case 1:
pad= 8;
bdOut.bdBytesPerRow= ( toWide+ pad- 1 )/ pad;
bdOut.bdBytesPerRow *= (pad/8);
bdOut.bdBufferLength= toHigh* bdOut.bdBytesPerRow+ toWide+ 32;
bufferOut= (unsigned char *)malloc( bdOut.bdBufferLength );
if ( ! bufferOut )
{ LLDEB(toWide,toHigh); return -1; }
xim= gdk_image_new_bitmap( vis, (char *)bufferOut,
toWide, toHigh );
if ( ! xim )
{ LDEB(xim); free( bufferOut ); return -1; }
if ( *((unsigned char *)&one) )
{ swapBitmapBytes= 1; }
else{ swapBitmapBytes= 0; }
bitmapUnit= 8;
bdOut.bdBitsPerSample= 1;
bdOut.bdSamplesPerPixel= 1;
bdOut.bdBitsPerPixel= 1;
bdOut.bdColorEncoding= BMcoBLACKWHITE;
bdOut.bdColorCount= 0;
break;
case 8:
case 16:
xim= gdk_image_new( GDK_IMAGE_FASTEST, vis, toWide, toHigh );
if ( ! xim )
{ LDEB(xim); return -1; }
bufferOut= xim->mem;
bdOut.bdBytesPerRow= xim->bpl;
bdOut.bdBufferLength= toHigh* bdOut.bdBytesPerRow;
bdOut.bdBitsPerSample= 8;
bdOut.bdSamplesPerPixel= 3;
bdOut.bdBitsPerPixel= depth;
bdOut.bdColorEncoding= BMcoRGB8PALETTE;
bdOut.bdColorCount= 0;
break;
case 32:
case 24:
default:
LDEB(depth); return -1;
}
}
/* 2 */
for ( col= 0; col < 64; col++ )
{
int r, g, b;
APP_COLOR_RGB xc;
r= ( col & 0x30 ) << 2;
g= ( col & 0x0c ) << 4;
b= ( col & 0x03 ) << 6;
if ( appColorRgb( &xc, ac, r, g, b ) )
{ LDEB(col); return -1; }
}
if ( bdOut.bdBytesPerRow != xim->bpl )
{ LLDEB(bdOut.bdBytesPerRow,xim->bpl); }
if ( bmFillImage( &(ac->acAllocator),
bitmapUnit, swapBitmapBytes, swapBitmapBits,
bufferOut, bufferIn, &bdOut, bdIn ) )
{ LDEB(1); gdk_image_destroy( xim ); return -1; }
*pPimage= xim; return 0;
}
/************************************************************************/
/* */
/* Convert a BitmapDescription to an APP_IMAGE. */
/* */
/************************************************************************/
int appImgMakePixmap( AppDrawingData * add,
APP_BITMAP_IMAGE * pPixmap,
int toWide,
int toHigh,
AppColors * ac,
AppBitmapImage * abi )
{
APP_IMAGE * xim;
GdkWindow * win= add->addDrawable;
int depth= ac->acAllocator.caDepth;
if ( appImgMakeImage( add, &xim, toWide, toHigh, ac, abi ) )
{ LLDEB(toWide,toHigh); return -1; }
/* 5 */
*pPixmap= gdk_pixmap_new( win, toWide, toHigh, depth );
if ( ! *pPixmap )
{ XDEB(*pPixmap); return -1; }
gdk_draw_image( *pPixmap, add->addGc, xim, 0, 0, 0, 0, toWide, toHigh );
gdk_image_destroy( xim );
return 0;
}
# endif /* USE_GTK */
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