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ImageWindow.c
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1994-02-04
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/*==============================================================================
Project: POV-Ray
Version: 2.2
File: ImageWindow.c
Description:
This file contains the Macintosh Image window routines for POV-Ray.
------------------------------------------------------------------------------
Authors:
Jim Nitchals, David Harr, Eduard [esp] Schwan
------------------------------------------------------------------------------
from Persistence of Vision Raytracer
Copyright 1993 Persistence of Vision Team
------------------------------------------------------------------------------
NOTICE: This source code file is provided so that users may experiment
with enhancements to POV-Ray and to port the software to platforms other
than those supported by the POV-Ray Team. There are strict rules under
which you are permitted to use this file. The rules are in the file
named POVLEGAL.DOC which should be distributed with this file. If
POVLEGAL.DOC is not available or for more info please contact the POV-Ray
Team Coordinator by leaving a message in CompuServe's Graphics Developer's
Forum. The latest version of POV-Ray may be found there as well.
This program is based on the popular DKB raytracer version 2.12.
DKBTrace was originally written by David K. Buck.
DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
------------------------------------------------------------------------------
More Info:
This Macintosh version of POV-Ray was created and compiled by Jim Nitchals
(Think 5.0) and Eduard Schwan (MPW 3.2), based (loosely) on the original
port by Thomas Okken and David Lichtman, with some help from Glenn Sugden.
For bug reports regarding the Macintosh version, you should contact:
Eduard [esp] Schwan
CompuServe: 71513,2161
Internet: jl.tech@applelink.apple.com
AppleLink: jl.tech
Jim Nitchals
Compuserve: 73117,3020
America Online: JIMN8
Internet: jimn8@aol.com -or- jimn8@applelink.apple.com
AppleLink: JIMN8
------------------------------------------------------------------------------
Change History:
930610 [esp] Created
930610 [esp] Added Size2Window code
930620 [esp] Changed brighten/darken image slightly to fix saturation bug
930710 [esp] Added WindowValid check
930903 [esp] Major bug fixes to Virtual Image Buffer code
931001 [esp] version 2.0 finished (Released on 10/4/93)
931119 [djh] 2.0.1 source conditionally compiles for PPC machines, keyword __powerc
==============================================================================*/
/*==== our header ====*/
#include "ImageWindow.h"
/*==== defs ====*/
// temp virtual image file file
#define POVRAY_IMAGETEMP_FNAME "POV-Ray.vib"
// Windows
#define kWindID_Image 1001 // image window
#define PICTF_HEADER_SIZE 512 // old MacDraw PICTF header
/* Pict file header structure (after the 512 byte header) */
typedef struct
{
short picSize; // low word of size
Rect picFrame; // picture bounds
} PictFHeader, *PictFHeaderPtr;
/*==== globals ====*/
WindowPtr gImageWindowPtr = NULL; // the image window
Boolean gImageWindIsValid = false; // true if valid stuff in window
// Str63 gImageWindName; // image window's name
Boolean use_custom_palette = false; // does the user desire to use color q?
int gColorQuantMethod = -1; // what kind of color quantization?
Boolean gDoingVirtualFile = false; // true if doing virtual image buffering
#if defined(__powerc)
extern RoutineDescriptor gPutPICTRD;
#endif
/*==== globals (local) ====*/
/* image window stuff */
static PixMapHandle gOffScreenPixMapH = NULL;
static Ptr gImagePixmapPtr = NULL;
static CTabHandle gCTabHdl = NULL;
static PaletteHandle gCustomPalette = NULL;
static PaletteHandle gSystemPalette = NULL;
// used by Paint_to_Picture() and MyPutPicProc()
PicHandle gMyPicHandle;
long gMyPicSize;
static FILE *gImagePictFile = NULL; // used to save image to PICT
static Rect gImageBounds, // source (offscreen image) bounds
gDisplayBounds; // destination image bounds
static short gImageWidth,
gImageHeight;
static int gLastYPos = 0; // last vertical position during previous refresh
static short gCurrYPos;
static long gPixMapBuffSize;
static long gDitherTicks; // # of ticks to wait between image refresh
static long gRefreshTick = 0; // Time of last Quickdraw dither of graphic port
/* Undo stuff */
static Ptr gImageUndoBuffer = NULL;
static Ptr gImageUndoBuffer2 = NULL;
static Ptr gImageRevertBuffer = NULL;
/* virtual image buffer globals */
static FILE *gVirtualImageFile = NULL;
static short virtual_pixHeight;
static short virtual_buffer_dirty;
static short virtual_currentSegment = -1;
static short virtual_minY;
static short virtual_maxY;
static long virtual_segSize = SWAP_SIZE;
// ==============================================
void InitImageWindow(void)
{
// allocate the image window (it is shown/hidden later)
gImageWindowPtr = GetNewCWindow(kWindID_Image, NULL, (WindowPtr)NULL);
} // InitImageWindow
// ==============================================
void KillImageWindow(void)
{
if (gImageWindowPtr)
DisposeWindow(gImageWindowPtr);
gImageWindowPtr = NULL;
} // KillImageWindow
// ==============================================
// Create system/custom palette variables for use by image window
void SetupPalettes(void)
{
int k;
// Get default System palette for non-custom mode, (IM VI, Pg. 20-17)
gSystemPalette = NewPalette(256, NULL, pmTolerant, 0x0000);
if (gSystemPalette)
{
CopyPalette(GetPalette((WindowPtr)-1), gSystemPalette, 0, 0, 256);
for (k=0; k<256; k++)
SetEntryUsage(gSystemPalette, k, pmTolerant, 0x0000);
}
// allocate a palette for the Image window, fill to default system palette
gCustomPalette = NewPalette(256, NULL, pmTolerant, 0x0000); // exact match only
if (gCustomPalette)
{
CopyPalette(gSystemPalette, gCustomPalette, 0, 0, 256);
for (k=0; k<256; k++)
SetEntryUsage(gCustomPalette, k, pmTolerant, 0x0000);
}
} // SetupPalettes
// ==============================================
// Build offscreen pixmap
void SetupOffscreen(void)
{
// Jim, since we REQUIRE 32 bit Color QuickDraw, we should change this
// to use the much easier and better supported 32bQD call NewGWorld()? [esp]
gCTabHdl = (CTabHandle) NewHandle(sizeof(ColorTable));
(**gCTabHdl).ctSeed = 24;
(**gCTabHdl).ctFlags = 0;
(**gCTabHdl).ctSize = 0;
gOffScreenPixMapH = (PixMapHandle) NewHandle(sizeof(PixMap));
if (gOffScreenPixMapH != NULL)
{
(**gOffScreenPixMapH).pmVersion = 0;
(**gOffScreenPixMapH).packType = 0;
(**gOffScreenPixMapH).packSize = 0;
(**gOffScreenPixMapH).hRes = 0x480000; // 72.0 x 72.0 dpi
(**gOffScreenPixMapH).vRes = 0x480000;
(**gOffScreenPixMapH).pixelType = RGBDirect;
(**gOffScreenPixMapH).pixelSize = 32;
(**gOffScreenPixMapH).cmpCount = 3;
(**gOffScreenPixMapH).cmpSize = 8;
(**gOffScreenPixMapH).planeBytes = 0;
(**gOffScreenPixMapH).pmTable = gCTabHdl;
(**gOffScreenPixMapH).pmReserved = 0;
(**gOffScreenPixMapH).baseAddr = NULL;
}
if (gOffScreenPixMapH == NULL)
{
// fatal error
displayDialog(kdlog_GenericFatalErr, "Cannot allocate memory for PixMap",
MemError(), ewcDoCentering, eMainDevice);
exit_handler();
}
} // SetupOffscreen
// ==============================================
// Build offscreen pixmap
void KillOffscreen(void)
{
if (gCTabHdl)
DisposeHandle((Handle)gCTabHdl);
if (gOffScreenPixMapH)
DisposeHandle((Handle)gOffScreenPixMapH);
gCTabHdl = NULL;
gOffScreenPixMapH = NULL;
} // KillOffscreen
// ==============================================
// Close the image window
void CloseImageWindow()
{
if (gImageWindowPtr)
HideWindow(gImageWindowPtr);
(**gFilePrefs_h).imageMagFactor = viewmn_hidden;
} // CloseImageWindow
// ==============================================
// Force the entire image window to be updated
void InvalRect_ImageWindow(Boolean DoWholeWindow)
{
int magFactor;
Rect myInvalRect;
if (gImageWindowPtr && ((WindowPeek)gImageWindowPtr)->visible)
{
SetPort(gImageWindowPtr);
myInvalRect = gImageWindowPtr->portRect;
ClipRect(&myInvalRect);
// if doing partial window in a regular magnification mode...
if (!DoWholeWindow && ((**gPrefs2Use_h).imageMagFactor != viewmn_Size2Window))
{
magFactor = (**gPrefs2Use_h).imageMagFactor-viewmn_normal+1; // 1,2,3,4
myInvalRect.top = magFactor * gLastYPos;
myInvalRect.bottom = magFactor * (gCurrYPos + 1);
}
InvalRect(&myInvalRect);
}
} // InvalRect_ImageWindow
// ==============================================
// Display the image window grow box
static void DrawImageGrowBox(void)
{
int looper;
Rect box;
PenState pstate;
// Save current port state
SetPort(gImageWindowPtr);
GetPenState(&pstate);
// find window size
box = gImageWindowPtr->portRect;
// make boxes in lower left corner
box.top = box.bottom-7;
box.left = box.right-7;
OffsetRect(&box, -1, -1);
// do two overlapping boxes
for (looper=0; looper<2; looper++)
{
// draw white box
ForeColor(whiteColor);
FrameRect(&box);
// draw black box
OffsetRect(&box, -1, -1);
ForeColor(blackColor);
FrameRect(&box);
// move up & draw 2nd smaller box
OffsetRect(&box, -2, -2);
box.right -= 1;
box.bottom -= 1;
}
// restore world
SetPenState(&pstate);
} // DrawImageGrowBox
// ==============================================
void DoResizeImageWindow(WindowPtr w, short h, short v)
{
// Rect oldHorizBar;
Rect r;
SetPort(w);
// oldHorizBar = w->portRect;
// oldHorizBar.top = oldHorizBar.bottom - (SBarWidth+1);
SizeWindow(w, h, v, false);
// EraseRect(&oldHorizBar);
// MoveControl(gSrcWind_VScroll, w->portRect.right - SBarWidth, w->portRect.top-1);
// SizeControl(gSrcWind_VScroll, SBarWidth+1, w->portRect.bottom - w->portRect.top-(SBarWidth-2));
// r = (**gSrcWind_VScroll).contrlRect;
// ValidRect(&r);
GetGlobalWindowRect(w, &r);
(**gFilePrefs_h).imageWind_pos = r;
if ((**gPrefs2Use_h).imageMagFactor == viewmn_Size2Window)
gDisplayBounds = w->portRect;
} // DoResizeImageWindow
// ==============================================
void DoGrowImageWindow(WindowPtr w, Point p)
{
GrafPtr savePort;
long theResult;
Rect r;
GetPort(&savePort);
SetPort(w);
GetMaxGrowRect(w, &r);
theResult = GrowWindow(w, p, &r);
if (theResult != 0)
{
DoResizeImageWindow(w, LoWord(theResult), HiWord(theResult));
InvalRect_ImageWindow(true);
}
SetPort(savePort);
} // DoGrowImageWindow
// ==============================================
void UpdateImageWindow(void)
{
if (gImageWindowPtr)
{
SetPort(gImageWindowPtr);
BeginUpdate(gImageWindowPtr);
DrawImageWindow(false);
EndUpdate(gImageWindowPtr);
}
} // UpdateImageWindow
// ==============================================
void SetImageWindowMag(short magMenuItem)
{
int magFactor;
Rect r,screenRect;
GDHandle theGD;
if (magMenuItem == viewmn_hidden)
HideWindow(gImageWindowPtr);
else
{
if (magMenuItem == viewmn_Size2Window)
{ // set image buffer to 1xsize, leave window size alone
gDisplayBounds = gImageWindowPtr->portRect;
}
else
{ // set image buffer rect to N*Size, resize window
magFactor = magMenuItem-viewmn_normal+1; // 1,2,3,4
// get new zero-based rect
SetRect(&gDisplayBounds, 0, 0,
gImageWidth * magFactor,
gImageHeight * magFactor);
// convert to potential global window rect
GetGlobalWindowRect(gImageWindowPtr, &r);
r.right = r.left + gDisplayBounds.right;
r.bottom = r.top + gDisplayBounds.bottom;
// move it to appropriate screen if needed
ForceRectOnScreen(&r);
// [esp] hmm, shouldn't this next useful chunk of code be moved into ScreenUtils.c?
// clip any overhang off bottom/right
theGD = GetClosestGDevice(&r);
screenRect = (**theGD).gdRect;
if (r.right > screenRect.right)
r.right = screenRect.right;
if (r.bottom > screenRect.bottom)
r.bottom = screenRect.bottom;
MoveWindow(gImageWindowPtr, r.left, r.top, false);
DoResizeImageWindow(gImageWindowPtr,
r.right-r.left,
r.bottom-r.top);
// [esp] need code here to handle scroll bars... oh yah, we need scroll bars first!
}
// if window is valid, show it now. This check lets the user
// set the window size even when there's no valid window content,
// and doesn't actually show the window until it is valid.
if (gImageWindIsValid)
{
ShowWindow(gImageWindowPtr);
SelectWindow(gImageWindowPtr);
InvalRect_ImageWindow(true);
}
} // else visible
} // SetImageWindowMag
// ==============================================
// Create undo buffers for Image window changes
void make_undo(void)
{
if (gImageUndoBuffer == 0)
{
gImageUndoBuffer = NewPtr (gPixMapBuffSize); /* room for image */
gImageUndoBuffer2 = NewPtr (gPixMapBuffSize); /* room for image */
gImageRevertBuffer = NewPtr (gPixMapBuffSize);
if ( (gImageRevertBuffer) && (gImagePixmapPtr))
memcpy(gImageRevertBuffer, gImagePixmapPtr, gPixMapBuffSize);
}
/* if any of the memory allocations failed, or available mem is low, */
/* fail the whole undo system */
if ( (gImageUndoBuffer == NULL) || (gImageUndoBuffer2 == NULL) || (gImageRevertBuffer == NULL)
|| (FreeMem() < 50000L) )
{
if (gImageUndoBuffer)
DisposePtr (gImageUndoBuffer);
if (gImageUndoBuffer2)
DisposePtr (gImageUndoBuffer2);
if (gImageRevertBuffer)
DisposePtr (gImageRevertBuffer);
gImageUndoBuffer = NULL;
gImageUndoBuffer2 = NULL;
gImageRevertBuffer = NULL;
}
if ((gImageUndoBuffer) && (gImagePixmapPtr))
{
memcpy(gImageUndoBuffer, gImagePixmapPtr, gPixMapBuffSize);
gCanUndo = TRUE;
}
} // make_undo
// ==============================================
// Actually do the undo operation on the image window
void undo_image(void)
{
if ((gImageUndoBuffer) && (gCanUndo) && (gImagePixmapPtr))
{
memcpy(gImageUndoBuffer2, gImagePixmapPtr, gPixMapBuffSize);
memcpy(gImagePixmapPtr, gImageUndoBuffer, gPixMapBuffSize);
memcpy(gImageUndoBuffer, gImageUndoBuffer2, gPixMapBuffSize);
InvalRect_ImageWindow(true);
}
} // undo_image
// ==============================================
// restore the original image to the image window
void revert_image(void)
{
if ((gImageRevertBuffer) && (gImagePixmapPtr))
{
memcpy(gImageUndoBuffer, gImagePixmapPtr, gPixMapBuffSize);
memcpy(gImagePixmapPtr, gImageRevertBuffer, gPixMapBuffSize);
gCanUndo = TRUE;
InvalRect_ImageWindow(true);
}
} // revert_image
// ==============================================
// return the value "v", insuring it is between 0 and 255
static short ClipToByteRange(short v)
{
if ( v < 0)
return (0);
if (v > 255)
return (255);
return (v);
} // ClipToByteRange
// ==============================================
// Darken every pixel value in image window by 7/8ths original
void darken_image(void)
{
unsigned char *pptr;
short v;
long i,j;
make_undo();
if (gImagePixmapPtr == 0) return;
for (i=0; i < gImageHeight; i++)
{
for (j=0; j < gImageWidth; j++)
{
pptr = (unsigned char *)
(gImagePixmapPtr + 4L * ((gImageWidth * i) + j));
*pptr = 0;
pptr++;
v = (*pptr * 7 / 8)-1;
*pptr = ClipToByteRange (v);
pptr++;
v = (*pptr * 7 / 8)-1;
*pptr = ClipToByteRange (v);
pptr++;
v = (*pptr * 7 / 8)-1;
*pptr = ClipToByteRange (v);
pptr++;
}
}
InvalRect_ImageWindow(true);
} // darken_image
// ==============================================
// Lighten every pixel value in image window by 8/7ths original
void lighten_image(void)
{
unsigned char *pptr;
long i,j;
short v;
make_undo();
if (gImagePixmapPtr == 0) return;
for (i=0; i < gImageHeight; i++)
{
for (j=0; j < gImageWidth; j++)
{
pptr = (unsigned char *)
(gImagePixmapPtr + 4L * ((gImageWidth * i) + j));
*pptr = 0;
pptr++;
v = (*pptr * 8 / 7)+1;
*pptr = ClipToByteRange (v);
pptr++;
v = (*pptr * 8 / 7)+1;
*pptr = ClipToByteRange (v);
pptr++;
v = (*pptr * 8 / 7)+1;
*pptr = ClipToByteRange (v);
pptr++;
}
}
InvalRect_ImageWindow(true);
} // lighten_image
// ==============================================
// Invert every pixel value in image window
void invert_image(void)
{
unsigned char *pptr;
long i,j;
make_undo();
if (gImagePixmapPtr == 0) return;
for (i=0; i < gImageHeight; i++)
{
for (j=0; j < gImageWidth; j++)
{
pptr = (unsigned char *)
(gImagePixmapPtr + 4L * ((gImageWidth * i) + j));
*pptr = 0;
pptr++;
*pptr = 255 - *pptr;
pptr++;
*pptr = 255 - *pptr;
pptr++;
*pptr = 255 - *pptr;
pptr++;
}
}
InvalRect_ImageWindow(true);
} // invert_image
// ==============================================
// Reduce the contrast of every pixel value in image window a bit
void reduce_contrast(void)
{
unsigned char *pptr;
long i,j;
short v;
make_undo();
if (gImagePixmapPtr == 0) return;
for (i=0; i < gImageHeight; i++)
{
for (j=0; j < gImageWidth; j++)
{
pptr = (unsigned char *)
(gImagePixmapPtr + 4L * ((gImageWidth * i) + j));
*pptr++ = 0;
v = *pptr;
v = v - ((v - 128) >> 2);
*pptr++ = v;
v = *pptr;
v = v - ((v - 128) >> 2);
*pptr++ = v;
v = *pptr;
v = v - ((v - 128) >> 2);
*pptr++ = v;
}
}
InvalRect_ImageWindow(true);
} // reduce_contrast
// ==============================================
// Increase the contrast of every pixel value in image window a bit
void increase_contrast(void)
{
unsigned char *pptr;
long i,j;
short v;
make_undo();
if (gImagePixmapPtr == 0) return;
for (i=0; i < gImageHeight; i++)
{
for (j=0; j < gImageWidth; j++)
{
pptr = (unsigned char *)
(gImagePixmapPtr + 4L * ((gImageWidth * i) + j));
*pptr++ = 0;
v = *pptr;
v = v + ((v - 128) >> 2);
*pptr++ = ClipToByteRange(v);
v = *pptr;
v = v + ((v - 128) >> 2);
*pptr++ = ClipToByteRange(v);
v = *pptr;
v = v + ((v - 128) >> 2);
*pptr++ = ClipToByteRange(v);
}
}
InvalRect_ImageWindow(true);
} // increase_contrast
// ==============================================
// draw a 1 pixel black border around the edge of the image
void draw_border(void)
{
unsigned char *pptr;
long i;
make_undo();
if (gImagePixmapPtr == 0) return;
for (i=0; i < gImageHeight; i++)
{
/* left border edge */
pptr = (unsigned char *)
(gImagePixmapPtr + (gImageWidth * 4 * i) );
*pptr++ = 0;
*pptr++ = 0;
*pptr++ = 0;
*pptr++ = 0;
/* right border edge */
pptr = (unsigned char *)
(gImagePixmapPtr + (gImageWidth * 4 * i) + ((gImageWidth-1) * 4) );
*pptr++ = 0;
*pptr++ = 0;
*pptr++ = 0;
*pptr++ = 0;
}
for (i=0; i < gImageWidth; i++)
{
/* top border edge */
pptr = (unsigned char *)
(gImagePixmapPtr + (4 * i));
*pptr++ = 0;
*pptr++ = 0;
*pptr++ = 0;
*pptr++ = 0;
/* bottom border edge */
pptr = (unsigned char *)
( gImagePixmapPtr + 4L*gImageWidth*(gImageHeight-1) + 4*i );
*pptr++ = 0;
*pptr++ = 0;
*pptr++ = 0;
*pptr++ = 0;
}
InvalRect_ImageWindow(true);
} // draw_border
// ==============================================
// Create and open the virtual image buffer file for large images
void open_virtual(void)
{
int err;
delete_virtual();
if (!gDoingVirtualFile)
{
gVirtualImageFile = fopen(POVRAY_IMAGETEMP_FNAME,"wb+");
err = ferror(gVirtualImageFile);
if (!gVirtualImageFile)
printf("## Error #%d opening file '%s'!\n", err, POVRAY_IMAGETEMP_FNAME);
}
virtual_currentSegment = -1;
virtual_buffer_dirty = false;
virtual_minY = 32767;
virtual_maxY = 0;
virtual_pixHeight = virtual_segSize / (gImageWidth * 4L);
gDoingVirtualFile = true;
} // open_virtual
// ==============================================
// Close and delete the virtual image buffer file
void delete_virtual(void)
{
int k;
if (gDoingVirtualFile)
{
fclose (gVirtualImageFile);
gVirtualImageFile = NULL;
}
k = remove(POVRAY_IMAGETEMP_FNAME);
gDoingVirtualFile = false;
} // delete_virtual
// ==============================================
// Dispose of virtual image buffer memory, and close/delete the file
void dispose_virtual(void)
{
Handle h;
if (gImagePixmapPtr)
{
h = RecoverHandle(gImagePixmapPtr);
HUnlock(h);
DisposHandle(h);
gImagePixmapPtr = NULL;
gCanUndo = 0;
}
if (gImageUndoBuffer)
DisposePtr(gImageUndoBuffer);
if (gImageUndoBuffer2)
DisposePtr(gImageUndoBuffer2);
if (gImageRevertBuffer)
DisposePtr(gImageRevertBuffer);
gImageUndoBuffer = NULL;
gImageUndoBuffer2 = NULL;
gImageRevertBuffer = NULL;
delete_virtual();
virtual_minY = 32767;
} // dispose_virtual
// ==============================================
// swap in the "y"th virtual image buffer segment from disk
void swap_virtual_segment (short y)
{
int i;
int err;
// is Y outside currently loaded segment? need to load new one
if (gDoingVirtualFile && ((y < virtual_minY) || (y >= virtual_maxY)) )
{
// is current segment dirty? save to disk first if so
if (virtual_buffer_dirty && (virtual_currentSegment >= 0))
{
fseek(gVirtualImageFile, (virtual_currentSegment * virtual_segSize), SEEK_SET);
if ( fwrite((char *) gImagePixmapPtr, virtual_segSize, 1, gVirtualImageFile) != 1)
{ // error
err = ferror(gVirtualImageFile);
if (err)
printf("## Error #%d writing position #%ld in file '%s'!\n",
err, (virtual_currentSegment * virtual_segSize),
POVRAY_IMAGETEMP_FNAME);
dispose_virtual();
}
}
// Now calculate and read needed segment into memory
if (gDoingVirtualFile)
{
// calculate new current segment stuff
virtual_currentSegment = (int) (y / virtual_pixHeight);
virtual_minY = virtual_currentSegment * virtual_pixHeight;
virtual_maxY = (virtual_currentSegment + 1) * virtual_pixHeight;
// read it in off disk
fseek(gVirtualImageFile, (virtual_currentSegment * virtual_segSize), SEEK_SET);
i = fread((char *) gImagePixmapPtr, virtual_segSize, 1, gVirtualImageFile);
err = ferror(gVirtualImageFile);
if (err)
printf("## Error #%d reading position #%ld in file '%s'!\n",
err, (virtual_currentSegment * virtual_segSize),
POVRAY_IMAGETEMP_FNAME);
virtual_buffer_dirty = false;
}
// error.. couldn't keep swap file open
if (!gDoingVirtualFile)
(void)displayDialog(139, NULL, 0, ewcDoCentering, eSameAsPassedWindow);
}
} // swap_virtual_segment
// ==============================================
// Initialize the display, set up buffers (VIB if needed)
void display_init(int width, int height)
{
long *p, *q, pmsize, i;
Handle h;
short error_dlogID = 0;
DialogPtr progressDialogPtr = NULL;
if ((**gPrefs2Use_h).progress >= kProgMinimal)
{
printf("-- [Memory] FreeMemory=%ldK\n", FreeMem()/1024L);
}
SetCursor(&gWaitCursor); // could take a little while..
gImageWidth = width;
gImageHeight = height;
gPixMapBuffSize = 4L * (long) width * (long) height;
gCurrYPos = 0;
gLastYPos = 0;
SetRect(&gImageBounds, 0, 0, width, height);
pmsize = gPixMapBuffSize;
virtual_buffer_dirty = false;
h = NULL;
// if there is enough room for a pixmap, plus a little free space (100KB),
// then go ahead and allocate it..
if (FreeMem() > pmsize + 100000L)
h = NewHandleClear(pmsize);
// ..otherwise play virtual buffer games..
if (h == NULL)
{
// can't allocate, do it in segments, set up progress dialog
progressDialogPtr = GetNewProgressDialog(153, 3);
if (progressDialogPtr)
{
PositionWindow(progressDialogPtr, ewcDoCentering, eSameAsPassedWindow, (WindowPtr)gp2wWindow);
ShowWindow(progressDialogPtr);
SelectWindow(progressDialogPtr);
DrawDialog(progressDialogPtr);
// make sure events get through so dlog is updated
Cooperate(true);
}
}
// let user know some info
if ((**gPrefs2Use_h).progress >= kProgMinimal)
{
if ( (h == NULL) && ((**gPrefs2Use_h).progress >= kProgDebug) )
printf("-d VIBNumSegments=%d, VIBSegmentSize=%dK\n",
(int)1+(gImageHeight / (virtual_segSize / (gImageWidth * 4L))),
(int)(virtual_segSize/1024L));
printf("-- ImageBufferPixWidth=%d, ImageBufferPixHeight=%d, ImageBufferSize=%ldK\n",
gImageWidth, gImageHeight, pmsize/1024L);
}
if (h)
{ // got whole thing, initialize it
MoveHHi(h);
HLock(h);
gImagePixmapPtr = *h;
(*gOffScreenPixMapH)->bounds = gImageBounds;
(*gOffScreenPixMapH)->rowBytes = (width * 4) | 0x8000;
(*gOffScreenPixMapH)->baseAddr = gImagePixmapPtr;
// fill to white
q = (long *) ((long) gImagePixmapPtr + pmsize);
for (p = (long *) gImagePixmapPtr; p < q; *p++ = -1L)
;
gDitherTicks = 20*60; /* 20 seconds between re-dithers */
}
else
{ // set up the virtual buffer
open_virtual();
SetRect(&gImageBounds, 0, 0, width, virtual_pixHeight);
if (gDoingVirtualFile)
h = NewHandleClear(virtual_segSize);
if (!h)
{
dispose_virtual();
error_dlogID = 133; // no display memory
}
else
{
if (progressDialogPtr)
updateProgressDialog(progressDialogPtr, 0, gImageHeight-1, 1);
MoveHHi(h);
HLock(h);
gImagePixmapPtr = *h;
(*gOffScreenPixMapH)->bounds = gImageBounds;
(*gOffScreenPixMapH)->rowBytes = (width * 4) | 0x8000;
(*gOffScreenPixMapH)->baseAddr = gImagePixmapPtr;
// fill to white
q = (long *) ((long) gImagePixmapPtr + virtual_segSize);
for (p = (long *) gImagePixmapPtr; p < q; *p++ = -1)
;
gDitherTicks = 4L*60L*60L; /* 4 minutes between re-dithers */
// We go through this for loop with i stepping down through the image
// scanlines every 1/2 buffer size. The only reason for not going
// every buffer size (virtual_pixHeight) is to make the progress bar
// a little less jerky, doesn't slow things down much.
for (i=0; (i<gImageHeight)&&gDoingVirtualFile; i+=(virtual_pixHeight>>1))
{
// Update the progress bar
if (progressDialogPtr)
{
Cooperate(true);
updateProgressDialog(progressDialogPtr, 0, gImageHeight-1, i);
}
// force it to write each segment to disk to build the file
virtual_buffer_dirty = true;
swap_virtual_segment (i);
}
/* swap back in segment 0 */
if (gDoingVirtualFile)
{
if (progressDialogPtr)
updateProgressDialog(progressDialogPtr, 0, gImageHeight, gImageHeight);
virtual_buffer_dirty = true;
swap_virtual_segment(0);
}
if (!gDoingVirtualFile)
{
error_dlogID = 139; // no disk space for swap file
dispose_virtual();
}
}
SetCursor(&qd.arrow);
// get rid of progress dialog
if (progressDialogPtr)
disposeProgressDialog(progressDialogPtr);
} // else virtual
// display any error messages now
if (error_dlogID)
(void)displayDialog(error_dlogID, NULL, 0, ewcDoCentering, eSameAsPassedWindow);
else
{
// image window now has content
// turn on now, so SetImageWindMag will show window
gImageWindIsValid = true;
// size and show the window
SetImageWindowMag((**gPrefs2Use_h).imageMagFactor);
if (gHasPictUtils)
SetCustomPalette(false);
}
SetCursor(&qd.arrow); // all done initializing..
} // display_init
// ==============================================
// Plot a single pixel at (x,y)
void display_plot(int x, int y,
unsigned char Red,
unsigned char Green,
unsigned char Blue)
{
RGBColor c;
unsigned char *pptr;
Rect magniRect;
long pport_y;
int mr;
int magFactor;
gCurrYPos = y;
if (gImagePixmapPtr)
{
if (gDoingVirtualFile)
{
swap_virtual_segment(y);
pport_y = y - virtual_minY; /* Y offset within current virtual segment */
virtual_buffer_dirty = true;
}
else
pport_y = y;
// slam the RGB value into the pixmap
pptr = (unsigned char *)
((long) gImagePixmapPtr + 4L * ((long) gImageBounds.right * pport_y + (long) x));
*pptr++ = 0;
*pptr++ = Red;
*pptr++ = Green;
*pptr = Blue;
}
magFactor = (**gPrefs2Use_h).imageMagFactor;
if (magFactor != viewmn_hidden)
{ // it is visible
SetPort(gImageWindowPtr);
c.red = ((short)Red)<<8;
c.green = ((short) Green)<<8;
c.blue = ((short) Blue)<<8;
if (magFactor == viewmn_normal)
SetCPixel(x, y, &c);
else
{ // some magnification at play here
if (magFactor != viewmn_Size2Window)
{ // go to straight magnification N (don't display
magFactor = magFactor-viewmn_normal+1; // 2,3,4
mr = gCurrYPos * magFactor;
magniRect.top = mr;
magniRect.bottom = mr + magFactor;
magniRect.left = x * magFactor;
magniRect.right = (x+1) * magFactor;
RGBForeColor(&c);
PaintRect(&magniRect);
}
}
// time to update the image?
if (TICKS > (gRefreshTick + gDitherTicks))
{
if (y > (gLastYPos + 1))
{
InvalRect_ImageWindow(false);
Cooperate(true);
gLastYPos = y;
gRefreshTick = TICKS;
}
}
}
} // display_plot
// ==============================================
// Do any cleanup needed when the display is complete
void display_finished(void)
{
// Reset last Y pos so that screen refreshes do the whole screen
gLastYPos = 0;
} // display_finished
// ==============================================
// Close any files used after display is complete
void display_close(void)
{
} // display_close
// ==============================================
// Find and assign the appropriate custom palette to the image window
void SetCustomPalette(Boolean doScreenUpdate)
{
PictInfo plot_info;
short k;
OSErr anError = noErr;
PaletteHandle thePalette = NULL;
if (gImageWindowPtr)
SetPort(gImageWindowPtr);
if (gHasPictUtils && use_custom_palette && gOffScreenPixMapH)
{
switch(gColorQuantMethod)
{
case systemMethod:
case popularMethod:
case medianMethod:
anError = GetPixMapInfo(gOffScreenPixMapH,
&plot_info,
returnPalette + suppressBlackAndWhite,
256,
gColorQuantMethod,
0);
// copy the new palette entries into custom palette & use it
if (plot_info.thePalette && gCustomPalette)
{
CopyPalette(plot_info.thePalette, gCustomPalette, 0, 0, 256);
for (k=0; k<256; k++)
SetEntryUsage(gCustomPalette, k, pmTolerant, 0x0000);
thePalette = gCustomPalette;
}
// done with retrieved palette. toolbox created it, so we must destroy it!
if (plot_info.thePalette)
DisposePalette(plot_info.thePalette);
break;
otherwise:
SysBeep(4);
break;
}
}
else
{
// Revert to system palette
thePalette = gSystemPalette;
}
if (gImageWindowPtr)
{
// reset all screens, this is a little severe though!
if (doScreenUpdate)
RestoreDeviceClut(NULL);
// tell window to use the new palette
if (thePalette)
NSetPalette(gImageWindowPtr, thePalette, pmAllUpdates);
ActivatePalette(gImageWindowPtr);
}
} // SetCustomPalette
// ==============================================
// Display the image to the window
void DrawImageWindow(Boolean DoWholeWindow)
{
BitMap bmap;
short myMode, i;
int magFactor;
static short counter = 0;
Rect my_bounds;
RGBColor myRGBWhite = {-1,-1,-1};
RGBColor myRGBBlack = {0,0,0};
SetCursor(&gWaitCursor); // could take a little while..
magFactor = (**gPrefs2Use_h).imageMagFactor;
if (magFactor != viewmn_hidden)
{ // it is visible
// set these to defaults so copybits behaves predictably
RGBBackColor(&myRGBWhite);
RGBForeColor(&myRGBBlack);
if (DoWholeWindow)
{
// clear whole window
EraseRect(&gImageWindowPtr->portRect);
}
else
{
}
// something to display?
if (gImagePixmapPtr)
{
bmap.baseAddr = (Ptr) gOffScreenPixMapH;
bmap.rowBytes = 0xC000;
bmap.bounds = gImageBounds;
// if (gHasPictUtils)
// SetCustomPalette(false);
if ((**gPrefs2Use_h).doDither)
myMode = ditherCopy;
else
myMode = srcCopy;
if (gDoingVirtualFile)
{
magFactor = magFactor-viewmn_normal+1; // 1,2,3,4
for (i=0; i < gImageHeight; i = i + virtual_pixHeight)
{
swap_virtual_segment (i);
my_bounds = gImageBounds;
// <esp> need to fix up for magFactor in virtual mode
my_bounds.top = (i * magFactor);
my_bounds.bottom = my_bounds.top + (virtual_pixHeight * magFactor);
/* don't worry about the bounds, the clipping region
of the window will stop us from drawing past the bottom */
my_bounds.left = 0;
my_bounds.right = gImageWidth * magFactor;
CopyBits(&bmap, &gImageWindowPtr->portBits,
&gImageBounds, &my_bounds,
myMode, NULL);
}
}
else
{
CopyBits(&bmap, &gImageWindowPtr->portBits,
&gImageBounds, &gDisplayBounds,
myMode, NULL);
}
// Draw our custom size box if in Size-2-Window mode
if (magFactor == viewmn_Size2Window)
DrawImageGrowBox();
} // offscreen exists
} // it is visible
SetCursor(&qd.arrow);
} // DrawImageWindow
// ==============================================
// Write Picture bottleneck routine for paint_to_picture()
pascal void MyPutPicProc( char *dataPtr, short byteCount)
{
int myByteCount;
myByteCount = byteCount;
gMyPicSize += byteCount;
if (gImagePictFile)
{
if (fwrite( dataPtr, 1, myByteCount, gImagePictFile) != myByteCount)
{
fclose (gImagePictFile);
gImagePictFile = 0;
}
}
// we have to keep the picture handle header updated for Quickdraw!
if (gMyPicHandle)
(**gMyPicHandle).picSize = gMyPicSize;
} // MyPutPicProc
// ==============================================
// Write the Pixmap out to either a disk file, or the Clipboard
void paint_to_picture(short do_disk_buffer)
{
BitMap bmap;
short myMode, i;
OSErr anError;
Rect my_bounds, myPicRect;
CGrafPort myCGrafPtr;
GrafPtr oldGrafPtr;
PictFHeader myPictFHeader;
CQDProcs myQDProcs;
anError = noErr;
if (gImagePixmapPtr)
{
SetCursor(&gWaitCursor); // could take a little while..
GetPort(&oldGrafPtr);
OpenCPort (&myCGrafPtr);
SetPort ((GrafPtr)&myCGrafPtr);
PortSize (gImageWidth, gImageHeight);
myPicRect.top = 0;
myPicRect.bottom = gImageHeight;
myPicRect.left = 0;
myPicRect.right = gImageWidth;
ClipRect(&myPicRect);
if (do_disk_buffer)
{
SetStdCProcs ((CQDProcsPtr) &myQDProcs);
#if defined(__powerc)
myQDProcs.putPicProc = (QDPutPicUPP)&gPutPICTRD;
#else
myQDProcs.putPicProc = (Ptr) MyPutPicProc;
#endif // __powerc
myCGrafPtr.grafProcs = (CQDProcsPtr) &myQDProcs;
// write the PICT header to the file
gMyPicSize = sizeof(myPictFHeader);
myPictFHeader.picSize = gMyPicSize; // accumulated later in MyPutPicProc()..
myPictFHeader.picFrame = myPicRect;
i = fwrite (&myPictFHeader, 1, sizeof(myPictFHeader), gImagePictFile);
anError = ferror(gImagePictFile);
}
if (!anError)
{
/* insure gMyPicHandle null, 'cause MyPutPicProc will be called in OpenPicture! */
gMyPicHandle = NULL;
gMyPicHandle = OpenPicture (&myPicRect);
anError = QDError();
}
bmap.baseAddr = (Ptr) gOffScreenPixMapH;
bmap.rowBytes = 0xC000; // flag for PixMap
if ((**gPrefs2Use_h).doDither)
myMode = ditherCopy;
else
myMode = srcCopy;
if (!anError)
{
if (gDoingVirtualFile)
for (i=0; (i <= gImageHeight) && !anError; i = i + virtual_pixHeight)
{
swap_virtual_segment (i);
my_bounds.top = i;
// NOTE, JIM! (next source line)
// By doing a CopyBits of the last rect in full, the whole rect of pixels _does_
// get written to the PICT file, even though not all the scan lines are valid..
// this doesn't hurt anything, just makes the file a little bigger than it needs to be,
// since the extra lines will get clipped on playback. However, since gImageBounds is
// global, it would be icky to temporarily change its bottom along with my_bounds so
// as to only write the necessary lines.. maybe later. :-)
my_bounds.bottom = i + virtual_pixHeight;
my_bounds.left = 0;
my_bounds.right = gImageWidth;
CopyBits(&bmap, (BitMap *)&myCGrafPtr.portPixMap, &gImageBounds, &my_bounds,
myMode, NULL);
anError = QDError();
}
else
{
CopyBits(&bmap, (BitMap *)&myCGrafPtr.portPixMap, &gImageBounds, &gImageBounds,
myMode, NULL);
anError = QDError();
}
}
/* write end-of-picture */
if (!anError)
{
ClosePicture();
anError = QDError();
}
if (!anError)
{
if (do_disk_buffer)
{
/* don't call us anymore! */
SetStdCProcs((CQDProcsPtr) &myQDProcs);
/* move back to pic header again */
fflush(gImagePictFile);
fseek(gImagePictFile, PICTF_HEADER_SIZE, SEEK_SET);
anError = ferror(gImagePictFile);
/* update the PICT header in the file (with now-true picSize field..) */
if (!anError)
{
myPictFHeader.picSize = gMyPicSize;
i = fwrite (&myPictFHeader, 1, sizeof(myPictFHeader), gImagePictFile);
anError = ferror(gImagePictFile);
}
}
else
{
ZeroScrap();
HLock((Handle) gMyPicHandle);
gMyPicSize = GetHandleSize((Handle) gMyPicHandle);
PutScrap (gMyPicSize, 'PICT', (Ptr) *gMyPicHandle);
gMyPicSize = UnloadScrap();
HUnlock((Handle) gMyPicHandle);
}
} // if !error
/* close up shop */
CloseCPort(&myCGrafPtr);
SetPort(oldGrafPtr);
if (gMyPicHandle)
DisposeHandle((Handle) gMyPicHandle);
/* oh yeah, check for errors */
if (anError)
{
if (gImagePictFile)
{
fclose (gImagePictFile);
gImagePictFile = NULL;
}
SysBeep(4);
}
SetCursor(&qd.arrow);
} // if gImagePixmapPtr..
} // paint_to_picture
// ==============================================
// Write the Pixmap as a PICT file
// getName - if true, prompt for output file name
// animSuffix - ignore if <0, if 0-N then use as file name frame suffix for anim
// ci - QuickTime StdCompression component if image is to be compressed
void SaveOutputFile(Boolean getName, int animSuffix, ComponentInstance ci)
{
int k;
Rect myPicRect;
Point where;
SFReply reply;
FInfo myFileInfo;
FSSpec fsFile;
char filler[4];
char cFname[256];
for (k=0; k<4; k++)
filler[k] = 0;
// Find and remove the ".POV" suffix
pStrCopy(gSrcWind_FileName, (StringPtr)cFname);
p2cstr((StringPtr)cFname);
k = strlen(cFname);
if ((k>4) && (cFname[k-4] == '.'))
cFname[k-4] = '\0';
// add animation suffix?
strcat (cFname, ".");
if (animSuffix == kNoAnimSuffix)
{
strcat (cFname, "Pict");
}
else
{
sprintf(filler, "%03d",animSuffix);
strcat (cFname, filler);
}
if (getName)
{
c2pstr(cFname);
GetBestDialogPos(&where);
SFPutFile (where, "\pSave PICT file as…", (StringPtr)cFname, NULL, &reply);
}
else
{
// copy the generated name into SF Reply..
strcpy ((char *) reply.fName,cFname);
c2pstr((char *)reply.fName);
reply.vRefNum = gSrcWind_VRefNum;
reply.good = TRUE;
}
if (reply.good)
{
SetCursor(&gWaitCursor);
fsFile.vRefNum = reply.vRefNum;
fsFile.parID = 0;
BlockMove(reply.fName, fsFile.name, 1+reply.fName[0]);
p2cstr(reply.fName);
SetVol(NULL, reply.vRefNum);
gImagePictFile = fopen((char *) reply.fName,"wb");
if (gImagePictFile)
{
for (k=0; k<PICTF_HEADER_SIZE/4; k++)
fwrite (&filler, 1, 4, gImagePictFile);
// if not doing a virtual screen (which could take awhile) then
// let the window update event get through to repaint the image
// in case the dialog stomped on it.
if (!gDoingVirtualFile)
{
Cooperate(true);
}
paint_to_picture(TRUE);
if (gImagePictFile)
{
fclose (gImagePictFile);
gImagePictFile = NULL;
c2pstr((char *)reply.fName);
/* If QuickTime is around & user wants to squish the picture, ask user how to squish it */
if (gHasImageCompressionMgr && (**gPrefs2Use_h).doCompression)
{
myPicRect.top = 0;
myPicRect.bottom = gImageHeight;
myPicRect.left = 0;
myPicRect.right = gImageWidth;
k = FSMakeFSSpec(reply.vRefNum, 0, reply.fName, &fsFile);
if (!k)
k=CompressPictF(ci, &fsFile);
}
// set image file to type PICT
k = GetFInfo(reply.fName, reply.vRefNum, &myFileInfo);
if (k==0)
{
myFileInfo.fdType = 'PICT';
myFileInfo.fdCreator = (**gPrefs2Use_h).pictFileCreator;
k = SetFInfo (reply.fName, reply.vRefNum, &myFileInfo);
}
// not yet tested and working, but leave in for later..
// // stick a preview resource on it
// if (wanted..)
// k = AppendFilePreview2PictF(&fsFile);
// Add System 7 custom icons of the image itself to the file
if (gHasImageCompressionMgr)
AppendFinderIcons2PictF(&fsFile, &myPicRect, eAFI_ShrinkWholeImage);
}
else
// couldn't write PICT file
(void)displayDialog(140, NULL, 0, ewcDoCentering, eSameAsPassedWindow);
}
SetCursor(&qd.arrow);
}
} // SaveOutputFile