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RenderInfo.c
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C/C++ Source or Header
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1990-02-03
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5KB
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176 lines
/*
* DiskSpeed v3.0
* by
* Michael Sinz
*
* Copyright (c) 1989 by MKSoft Development
*
* MKSoft Development
* 163 Appledore Drive
* Downingtown, PA 19335
*
* Yes, this is yet another disk speed testing program, but with a few
* differences. It was designed to give the most accurate results of the
* true disk performance in the system. For this reason many of
* DiskSpeed's results may look either lower or higher than current disk
* performance tests.
*
* This program was thrown together in a few hours because I needed more
* accurate and consistent results for disk performance as seen from the
* application's standpoint. This program has now served its purpose and
* I am now giving it to the rest of the Amiga world to play with as long
* as all of the files remain together in unmodified form. (That is, the
* files DiskSpeed, DiskSpeed.info, DiskSpeed.c, DiskSpeedWindow.c,
* DiskSpeedWindow.h, MakeBoxes.c, MakeBoxes.h, StandardGadgets.c,
* StandardGadgets.h, RenderInfo.c, RenderInfo.h, DiskSpeed.doc, and
* MakeFile)
*
* Version 2.0 of this program added a few features and cleaned up the
* user interface. I hope you like this...
*
* Version 3.0 of this program added the performance stress and cleaned up
* some parts of the older code. (Fix to RenderInfo.c)
*
******************************************************************************
* *
* Reading legal mush can turn your brain into guacamole! *
* *
* So here is some of that legal mush: *
* *
* Permission is hereby granted to distribute this program's source *
* executable, and documentation for non-commercial purposes, so long as the *
* copyright notices are not removed from the sources, executable or *
* documentation. This program may not be distributed for a profit without *
* the express written consent of the author Michael Sinz. *
* *
* This program is not in the public domain. *
* *
* Fred Fish is expressly granted permission to distribute this program's *
* source and executable as part of the "Fred Fish freely redistributable *
* Amiga software library." *
* *
* Permission is expressly granted for this program and it's source to be *
* distributed as part of the Amicus Amiga software disks, and the *
* First Amiga User Group's Hot Mix disks. *
* *
******************************************************************************
*
* This file contains the definition of the rendering information
* for elements on the screen. This information is used to generate
* the correct pen colours for items on the screen...
*/
#include <exec/types.h>
#include <graphics/view.h>
#include <intuition/intuition.h>
#include <proto/intuition.h>
#include <proto/graphics.h>
#include "RenderInfo.h"
/*
* This returns the colour difference hamming value...
*/
SHORT ColourDifference(UWORD rgb0, UWORD rgb1)
{
register SHORT level;
register SHORT tmp;
tmp=(rgb0 & 15) - (rgb1 & 15);
level=tmp*tmp;
tmp=((rgb0>>4) & 15) - ((rgb1>>4) & 15);
level+=tmp*tmp;
tmp=((rgb0>>8) & 15) - ((rgb1>>8) & 15);
level+=tmp*tmp;
return(level);
}
/*
* Calculate a rough brightness hamming value...
*/
SHORT ColourLevel(UWORD rgb)
{
return(ColourDifference(rgb,0));
}
#define MAX_COLOURS 16
VOID FillIn_RenderInfo(struct RenderInfo *ri)
{
register SHORT numcolours;
register SHORT loop;
register SHORT loop1;
register SHORT backpen;
register SHORT tmp;
SHORT colours[16];
SHORT colourlevels[16];
SHORT pens[16];
struct Screen screen;
GetScreenData((UBYTE *)&screen,sizeof(struct Screen),WBENCHSCREEN,NULL);
numcolours=1 << (screen.RastPort.BitMap->Depth);
if (numcolours>16) numcolours=16;
if (numcolours<3)
{ /* Some silly person is running with 2 colours... */
ri->BackPen=1;
ri->Highlight=0;
ri->Shadow=1;
ri->TextPen=0;
}
else
{
for (loop=0;loop<numcolours;loop++)
{
colours[loop]=GetRGB4(screen.ViewPort.ColorMap,(LONG)loop);
colourlevels[loop]=ColourLevel(colours[loop]);
pens[loop]=loop;
}
/* Sort darkest to brightest... */
for (loop=0;loop<(numcolours-1);loop++)
for (loop1=loop+1;loop1<numcolours;loop1++)
{
if (colourlevels[loop]>colourlevels[loop1])
{
tmp=colourlevels[loop];
colourlevels[loop]=colourlevels[loop1];
colourlevels[loop1]=tmp;
tmp=colours[loop];
colours[loop]=colours[loop1];
colours[loop1]=tmp;
tmp=pens[loop];
pens[loop]=pens[loop1];
pens[loop1]=tmp;
}
}
/* Now, pick the pens... HightLight... */
loop=numcolours-1;
while (!(ri->Highlight=pens[loop--]));
/* and Shadow... */
loop=0;
while (!(ri->Shadow=pens[loop++]));
/* The BackGround pen... */
if (!pens[loop]) loop++;
ri->BackPen=pens[backpen=loop];
loop1=0;
for (loop=0;loop<numcolours;loop++)
{
tmp=ColourDifference(colours[loop],colours[backpen]);
if (tmp>loop1)
{
loop1=tmp;
ri->TextPen=pens[loop];
}
}
}
}