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Meeting Pearls 3
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DiskSpeed
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renderinfo.c
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C/C++ Source or Header
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1994-12-13
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6KB
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204 lines
/*
* MKSoft Development Amiga ToolKit V1.0
*
* Copyright (c) 1985,86,87,88,89,90 by MKSoft Development
*
* DiskSpeed v4.2
* ScsiSpeed v4.2
* by
* Michael Sinz
*
* Copyright (c) 1989-1992 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.
*
******************************************************************************
* *
* 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 <exec/memory.h>
#include <graphics/view.h>
#include <graphics/text.h>
#include <intuition/intuition.h>
#include <intuition/screens.h>
#include <proto/exec.h>
#include <proto/intuition.h>
#include <proto/graphics.h>
#include "RenderInfo.h"
/*
* These define the amount of Red, Green, and Blue scaling used
* to help take into account the different visual impact of those
* colours on the screen.
*/
#define BLUE_SCALE 2
#define GREEN_SCALE 6
#define RED_SCALE 3
#define MAX_COLOURS 16
/*
* 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*BLUE_SCALE;
tmp=((rgb0>>4) & 15) - ((rgb1>>4) & 15);
level+=tmp*tmp*GREEN_SCALE;
tmp=((rgb0>>8) & 15) - ((rgb1>>8) & 15);
level+=tmp*tmp*RED_SCALE;
return(level);
}
/*
* Calculate a rough brightness hamming value...
*/
#define ColourLevel(x) ColourDifference(x,0)
/*
* For new programs, this also opens fonts...
*/
static VOID NewFillIn_RenderInfo(struct RenderInfo *ri,struct Screen *TheScreen)
{
register SHORT numcolours;
register SHORT loop;
register SHORT loop1;
register SHORT backpen;
register SHORT tmp;
SHORT colours[MAX_COLOURS];
SHORT colourlevels[MAX_COLOURS];
SHORT pens[MAX_COLOURS];
struct Screen screen;
if (!TheScreen) GetScreenData((APTR)(TheScreen=&screen),sizeof(struct Screen),WBENCHSCREEN,NULL);
ri->WindowTitle=TheScreen->BarHeight-TheScreen->BarVBorder+TheScreen->WBorTop;
numcolours=1 << (TheScreen->RastPort.BitMap->Depth);
if (numcolours>MAX_COLOURS) numcolours=MAX_COLOURS;
if (numcolours<3)
{ /* Some silly person is running with 2 colours... */
ri->BackPen=0;
ri->Highlight=1;
ri->Shadow=1;
ri->TextPen=1;
}
else
{
for (loop=0;loop<numcolours;loop++)
{
colours[loop]=GetRGB4(TheScreen->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];
}
}
}
}
VOID CleanUp_RenderInfo(struct RenderInfo *ri)
{
if (ri) FreeMem(ri,sizeof(struct RenderInfo));
}
/*
* Use this screen for the render information. If the screen is NULL
* it will use the WorkBench screen...
*/
struct RenderInfo *Get_RenderInfo(struct Screen *TheScreen)
{
register struct RenderInfo *ri;
if (ri=AllocMem(sizeof(struct RenderInfo),MEMF_PUBLIC|MEMF_CLEAR))
{
NewFillIn_RenderInfo(ri,TheScreen);
}
return (ri);
}