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- /*
- * Rub-Through Drawing Style
- *
- * Brings swap buffer pixels into the main buffer.
- *
- */
-
- #include <exec/types.h>
- #include <scan/modall.h>
- #include <scan/drawinfo.h>
- #include <string.h>
- #include "common.h"
-
-
- /**********************************************************************\
-
- Library Vectors
-
- \**********************************************************************/
-
- /*
- * XDM_Attr:
- *
- * Return to ImageFX some information about the Drawing Style (eg.
- * whether Options are needed, whether we work on greyscale or
- * color, etc.). Called when ImageFX first scans the drawing
- * style directory.
- *
- */
- ULONG __saveds __asm XDS_Attr (register __a0 struct XDrawAttr *attr)
- {
- attr->Flags = 0;
- attr->Priority = 126;
- return(0);
- }
-
- /*
- * XDS_Begin:
- *
- * Prepare before a pixel affecting operation.
- *
- */
- int __saveds __asm XDS_Begin (register __a0 struct IDrawInfo *di)
- {
- return(1);
- }
-
- /*
- * XDS_End:
- *
- * Cleanup after a pixel affecting operation.
- *
- */
- void __saveds __asm XDS_End (register __a0 struct IDrawInfo *di)
- {
- }
-
- /*
- * XDS_Get:
- *
- *
- */
- int __saveds __asm XDS_Get (register __a0 struct IDrawInfo *di)
- {
- struct Buffer *buf = ScanBase->MainBuffer;
- struct Buffer *sbuf = ScanBase->SwapBuffer;
- UBYTE *sr, *sg, *sb;
- UBYTE *dr, *dg, *db;
- UBYTE *red, *grn, *blu;
- int i, j;
- int w, h;
- int x, y;
- int xo, xl;
-
- if (!buf) return(0);
- if (!sbuf) return(0);
-
- GetFromBuf(buf, di);
-
- #ifdef USE_BUFFERS
-
- /*
- * Only copy if space has been allocated for us. Some drawing
- * modes may not require this information, so the buffers may
- * not be allocated to save time & space.
- */
-
- if (di->BPen)
- {
-
- w = di->Width;
- h = di->Height;
-
- for (j = 0, y = di->TE; j < h; j++, y++)
- {
-
- GetBufLine(di->BPen, &dr, &dg, &db, j);
-
- if ((y >= 0) && (y < sbuf->Height))
- {
- if (GetBufLine(sbuf, &red, &grn, &blu, y))
- {
- sr = red + di->LE;
- sg = grn + di->LE;
- sb = blu + di->LE;
- for (x = di->LE, i = 0; i < w; i++, x++) {
- if ((x < 0) || (x >= sbuf->Width)) {
- dr[i] = dg[i] = db[i] = 0;
- }
- else {
- dr[i] = sr[i];
- dg[i] = sg[i];
- db[i] = sb[i];
- }
- }
-
- }
- }
- else
- {
- /* outside bounds of image is black */
- memset(dr, 0, w);
- memset(dg, 0, w);
- memset(db, 0, w);
- }
-
- PutBufLine(di->BPen);
-
- }
-
- }
-
- #else
-
- /*
- * Only copy if space has been allocated for us. Some drawing
- * modes may not require this information, so the buffers may
- * not be allocated to save time & space.
- */
-
- if (di->PenR && di->PenG && di->PenB)
- {
-
- w = di->Width;
- h = di->Height;
-
- dr = di->PenR;
- dg = di->PenG;
- db = di->PenB;
-
- for (j = 0, y = di->TE; j < h; j++, y++)
- {
-
- if ((y >= 0) && (y < sbuf->Height))
- {
- if (GetBufLine(sbuf, &red, &grn, &blu, y))
- {
- sr = red + di->LE;
- sg = grn + di->LE;
- sb = blu + di->LE;
- for (x = di->LE, i = 0; i < w; i++, x++) {
- if ((x < 0) || (x >= sbuf->Width)) {
- dr[i] = dg[i] = db[i] = 0;
- }
- else {
- dr[i] = sr[i];
- dg[i] = sg[i];
- db[i] = sb[i];
- }
- }
-
- }
- }
- else
- {
- /* outside bounds of image is black */
- memset(dr, 0, w);
- memset(dg, 0, w);
- memset(db, 0, w);
- }
-
- dr += di->Width;
- dg += di->Width;
- db += di->Width;
-
- }
-
- }
-
- #endif
-
- return(1);
- }
-
- /*
- * XDS_Put:
- *
- *
- */
- int __saveds __asm XDS_Put (register __a0 struct IDrawInfo *di)
- {
- struct Buffer *buf = ScanBase->MainBuffer;
-
- if (!ScanBase->SwapBuffer) return(0);
-
- PutToBuf(buf, di);
-
- return(1);
- }
-
- /*
- * XDS_Options:
- *
- * Present a window to the user allowing him to adjust drawing style
- * options. Arguments may optionally be passed from an Arexx command.
- *
- */
- int __saveds __asm XDS_Options (register __a0 LONG *args)
- {
- return(0);
- }
-
- /*
- * XDS_LoadPrefs:
- *
- * Set preferences according to information loaded from disk.
- *
- */
- int __saveds __asm XDS_LoadPrefs (register __a0 void *prefs)
- {
- return(1);
- }
-
- /*
- * XDS_SavePrefs:
- *
- * Request preferences settings that are about to be saved to disk.
- *
- */
- int __saveds __asm XDS_SavePrefs (register __a0 void *prefs)
- {
- return(1);
- }
-
-
- int __saveds __asm XDS_Init (void)
- {
- return(1);
- }
-
- void __saveds __asm XDS_Cleanup (void)
- {
- }
-
-
-
- /**********************************************************************\
-
- Library Initialization Stuff
-
- \**********************************************************************/
-
- /*
- * This is the table of all the functions that can be called in this
- * module. The first four (Open, Close, Expunge, and Null) are reserved
- * for system use and MUST be specified in the order shown. The actual
- * functions are in the standard module startup code.
- */
- ULONG FuncTable[] = {
- /* These four MUST be present in this order */
- (ULONG) LibOpen,
- (ULONG) LibClose,
- (ULONG) LibExpunge,
- (ULONG) LibNull,
-
- /* Specific to the module */
- (ULONG) XDS_Attr,
- (ULONG) XDS_Begin,
- (ULONG) XDS_End,
- (ULONG) XDS_Get,
- (ULONG) XDS_Put,
- (ULONG) XDS_Options,
- (ULONG) XDS_LoadPrefs,
- (ULONG) XDS_SavePrefs,
- (ULONG) 0,
- (ULONG) 0,
- (ULONG) XDS_Init,
- (ULONG) XDS_Cleanup,
-
- /* End with -1L */
- (ULONG) -1L
- };
-
- /*
- * These are used by the standard module startup code.
- * LibraryName is the name of the library, and LibraryID is a short
- * description of the library. Both of these are largely irrelavent,
- * but they are included just for completeness.
- */
- UBYTE LibraryID[] = "$VER: Rub-Through Drawing Style 2.0.20 (15.2.95)";
- UBYTE LibraryType = NT_XDRAWSTYLE;
-
- /*
- * This is called by the standard module startup code when Image Scan
- * first opens the module. Here we should fill in the NumGads,
- * NewGad, Language, and LangCount fields of the provided ModuleBase
- * structure if necessary.
- */
- long __asm UserOpen (register __a6 struct ModuleBase *modbase)
- {
- return(TRUE);
- }
-
- /*
- * This is called by the standard module startup code when Image Scan
- * closes the module. It should cleanup anything allocated or obtained
- * in the UserOpen() function.
- */
- long __asm UserClose (register __a6 struct ModuleBase *modbase)
- {
- return(TRUE);
- }
-
-