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- /*
- * tixImgXpm.c --
- *
- * This file implements images of type "pixmap" for Tix.
- *
- * Copyright statement for tixImgXpm.c
- * Copyright 1996 Ioi Kim Lam
- *
- * The following terms apply only to this file and no other parts of the
- * Tix library.
- *
- * Permission is hereby granted, without written agreement and
- * without license or royalty fees, to use, copy, modify, and
- * distribute this file, for any purpose, provided that existing
- * copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions.
- *
- * DISCLAIMER OF ALL WARRANTIES
- *
- * IN NO EVENT SHALL THE AUTHOR OF THIS SOFTWARE BE LIABLE TO ANY PARTY
- * FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
- * IF THE AUTHOR OF THIS SOFTWARE HAS BEEN ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * THE AUTHOR OF THIS SOFTWARE SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
- * PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE AUTHOR OF THIS
- * SOFTWARE HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
- * ENHANCEMENTS, OR MODIFICATIONS.
- * ___________________________________________________________________
- *
- *
- * This file is adapted from the Tk 4.0 source file tkImgBmap.c
- * Original tkImgBmap.c copyright information
- * Copyright (c) 1994 The Regents of the University of California.
- * Copyright (c) 1994-1995 Sun Microsystems, Inc.
- *
- * See the file "license.terms.tcltk" for information
- * on usage and redistribution of the original tkImgBmap.c file, and for
- * a DISCLAIMER OF ALL WARRANTIES from the authors of tkImgBmap.c.
- */
- #ifdef USE_TK
- #ifdef STk_CODE
- # include <stk.h>
- #endif
-
- #include "tkInt.h"
- #include "tkPort.h"
-
- /*
- * The following data structure represents the master for a pixmap
- * image:
- */
-
- typedef struct PixmapMaster {
- Tk_ImageMaster tkMaster; /* Tk's token for image master. NULL means
- * the image is being deleted. */
- Tcl_Interp *interp; /* Interpreter for application that is
- * using image. */
- Tcl_Command imageCmd; /* Token for image command (used to delete
- * it when the image goes away). NULL means
- * the image command has already been
- * deleted. */
- char *fileString; /* Value of -file option (malloc'ed).
- * valid only if the -file option is specified
- */
- char *dataString; /* Value of -data option (malloc'ed).
- * valid only if the -data option is specified
- */
- /* First in list of all instances associated
- * with this master. */
- Tk_Uid id; /* ID's for XPM data already compiled
- * into the tixwish binary */
- int size[2]; /* width and height */
- int ncolors; /* number of colors */
- int cpp; /* characters per pixel */
- char ** data; /* The data that defines this pixmap
- * image (array of strings). It is
- * converted into an X Pixmap when this
- * image is instanciated
- */
- int isDataAlloced; /* False iff the data is got from
- * the -id switch */
- struct PixmapInstance *instancePtr;
- } PixmapMaster;
-
- /* Make this more portable */
-
- typedef struct ColorStruct {
- char c; /* This is used if CPP is one */
- char * cstring; /* This is used if CPP is bigger than one */
- XColor * colorPtr;
- } ColorStruct;
-
- /*
- * The following data structure represents all of the instances of an
- * image that lie within a particular window:
- *
- * %% ToDo
- * Currently one instance is created for each window that uses this pixmap.
- * This is usually OK because pixmaps are usually not shared or only shared by
- * a small number of windows. To improve resource allocation, we can
- * create an instance for each (Display x Visual x Depth) combo. This will
- * usually reduce the number of instances to one.
- */
- typedef struct PixmapInstance {
- int refCount; /* Number of instances that share this
- * data structure. */
- PixmapMaster *masterPtr; /* Pointer to master for image. */
- Tk_Window tkwin; /* Window in which the instances will be
- * displayed. */
- Pixmap pixmap; /* The pixmap to display. */
- Pixmap mask; /* Mask: only display pixmap pixels where
- * there are 1's here. */
- GC gc; /* Graphics context for displaying pixmap.
- * None means there was an error while
- * setting up the instance, so it cannot
- * be displayed. */
- struct PixmapInstance *nextPtr;
- /* Next in list of all instance structures
- * associated with masterPtr (NULL means
- * end of list).
- */
- ColorStruct * colors;
- } PixmapInstance;
-
- /*
- * The type record for pixmap images:
- */
-
- static int ImgXpmCreate _ANSI_ARGS_((Tcl_Interp *interp,
- char *name, int argc, char **argv,
- Tk_ImageType *typePtr, Tk_ImageMaster master,
- ClientData *clientDataPtr));
- static ClientData ImgXpmGet _ANSI_ARGS_((Tk_Window tkwin,
- ClientData clientData));
- static void ImgXpmDisplay _ANSI_ARGS_((ClientData clientData,
- Display *display, Drawable drawable,
- int imageX, int imageY, int width, int height,
- int drawableX, int drawableY));
- static void ImgXpmFree _ANSI_ARGS_((ClientData clientData,
- Display *display));
- static void ImgXpmDelete _ANSI_ARGS_((ClientData clientData));
-
- Tk_ImageType tixPixmapImageType = {
- "pixmap", /* name */
- ImgXpmCreate, /* createProc */
- ImgXpmGet, /* getProc */
- ImgXpmDisplay, /* displayProc */
- ImgXpmFree, /* freeProc */
- ImgXpmDelete, /* deleteProc */
- (Tk_ImageType *) NULL /* nextPtr */
- };
-
- /*
- * Information used for parsing configuration specs:
- */
-
- static Tk_ConfigSpec configSpecs[] = {
- {TK_CONFIG_STRING, "-data", (char *) NULL, (char *) NULL,
- (char *) NULL, Tk_Offset(PixmapMaster, dataString), TK_CONFIG_NULL_OK},
- {TK_CONFIG_STRING, "-file", (char *) NULL, (char *) NULL,
- (char *) NULL, Tk_Offset(PixmapMaster, fileString), TK_CONFIG_NULL_OK},
- {TK_CONFIG_UID, "-id", (char *) NULL, (char *) NULL,
- (char *) NULL, Tk_Offset(PixmapMaster, id), TK_CONFIG_NULL_OK},
- {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
- (char *) NULL, 0, 0}
- };
-
- /*
- * Prototypes for procedures used only locally in this file:
- */
- static int ImgXpmCmd _ANSI_ARGS_((ClientData clientData,
- Tcl_Interp *interp, int argc, char **argv));
- static void ImgXpmCmdDeletedProc _ANSI_ARGS_((
- ClientData clientData));
- static void ImgXpmConfigureInstance _ANSI_ARGS_((
- PixmapInstance *instancePtr));
- static int ImgXpmConfigureMaster _ANSI_ARGS_((
- PixmapMaster *masterPtr, int argc, char **argv,
- int flags));
- static int ImgXpmGetData _ANSI_ARGS_((Tcl_Interp *interp,
- PixmapMaster *masterPtr));
- static char ** ImgXpmGetDataFromFile _ANSI_ARGS_((Tcl_Interp * interp,
- char * string, int * numLines_return));
- static char ** ImgXpmGetDataFromId _ANSI_ARGS_((Tcl_Interp * interp,
- char * id));
- static char ** ImgXpmGetDataFromString _ANSI_ARGS_((Tcl_Interp*interp,
- char * string, int * numLines_return));
- static int ImgXpmGetPixmapFromData _ANSI_ARGS_((
- Tcl_Interp * interp,
- PixmapMaster *masterPtr,
- PixmapInstance *instancePtr));
-
- /* Local data, used only in this file */
- static Tcl_HashTable xpmTable;
- static int xpmTableInited = 0;
-
-
- /*
- *----------------------------------------------------------------------
- *
- * ImgXpmCreate --
- *
- * This procedure is called by the Tk image code to create "pixmap"
- * images.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * The data structure for a new image is allocated.
- *
- *----------------------------------------------------------------------
- */
- static int
- ImgXpmCreate(interp, name, argc, argv, typePtr, master, clientDataPtr)
- Tcl_Interp *interp; /* Interpreter for application containing
- * image. */
- char *name; /* Name to use for image. */
- int argc; /* Number of arguments. */
- char **argv; /* Argument strings for options (doesn't
- * include image name or type). */
- Tk_ImageType *typePtr; /* Pointer to our type record (not used). */
- Tk_ImageMaster master; /* Token for image, to be used by us in
- * later callbacks. */
- ClientData *clientDataPtr; /* Store manager's token for image here;
- * it will be returned in later callbacks. */
- {
- PixmapMaster *masterPtr;
-
- masterPtr = (PixmapMaster *) ckalloc(sizeof(PixmapMaster));
- masterPtr->tkMaster = master;
- masterPtr->interp = interp;
- masterPtr->imageCmd = Tcl_CreateCommand(interp, name, ImgXpmCmd,
- (ClientData) masterPtr, ImgXpmCmdDeletedProc);
-
- masterPtr->fileString = NULL;
- masterPtr->dataString = NULL;
- masterPtr->id = NULL;
- masterPtr->data = NULL;
- masterPtr->isDataAlloced = 0;
- masterPtr->instancePtr = NULL;
-
- if (ImgXpmConfigureMaster(masterPtr, argc, argv, 0) != TCL_OK) {
- ImgXpmDelete((ClientData) masterPtr);
- return TCL_ERROR;
- }
- *clientDataPtr = (ClientData) masterPtr;
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ImgXpmConfigureMaster --
- *
- * This procedure is called when a pixmap image is created or
- * reconfigured. It process configuration options and resets
- * any instances of the image.
- *
- * Results:
- * A standard Tcl return value. If TCL_ERROR is returned then
- * an error message is left in masterPtr->interp->result.
- *
- * Side effects:
- * Existing instances of the image will be redisplayed to match
- * the new configuration options.
- *
- * If any error occurs, the state of *masterPtr is restored to
- * previous state.
- *
- *----------------------------------------------------------------------
- */
- static int
- ImgXpmConfigureMaster(masterPtr, argc, argv, flags)
- PixmapMaster *masterPtr; /* Pointer to data structure describing
- * overall pixmap image to (reconfigure). */
- int argc; /* Number of entries in argv. */
- char **argv; /* Pairs of configuration options for image. */
- int flags; /* Flags to pass to Tk_ConfigureWidget,
- * such as TK_CONFIG_ARGV_ONLY. */
- {
- PixmapInstance *instancePtr;
- char * oldData, * oldFile;
- Tk_Uid oldId;
-
- oldData = masterPtr->dataString;
- oldFile = masterPtr->fileString;
- oldId = masterPtr->id;
-
- if (Tk_ConfigureWidget(masterPtr->interp, Tk_MainWindow(masterPtr->interp),
- configSpecs, argc, argv, (char *) masterPtr, flags)
- != TCL_OK) {
- return TCL_ERROR;
- }
-
- if (masterPtr->id != NULL ||
- masterPtr->dataString != NULL ||
- masterPtr->fileString != NULL) {
- if (ImgXpmGetData(masterPtr->interp, masterPtr) != TCL_OK) {
- goto error;
- }
- } else {
- Tcl_AppendResult(masterPtr->interp,
- "must specify one of -data, -file or -id", NULL);
- goto error;
- }
-
- /*
- * Cycle through all of the instances of this image, regenerating
- * the information for each instance. Then force the image to be
- * redisplayed everywhere that it is used.
- */
- for (instancePtr = masterPtr->instancePtr; instancePtr != NULL;
- instancePtr = instancePtr->nextPtr) {
- ImgXpmConfigureInstance(instancePtr);
- }
-
- if (masterPtr->data) {
- Tk_ImageChanged(masterPtr->tkMaster, 0, 0,
- masterPtr->size[0], masterPtr->size[1],
- masterPtr->size[0], masterPtr->size[1]);
- } else {
- Tk_ImageChanged(masterPtr->tkMaster, 0, 0, 0, 0, 0, 0);
- }
-
- done:
- return TCL_OK;
-
- error:
- /* Restore it to the original (possible valid) mode */
- masterPtr->dataString = oldData;
- masterPtr->fileString = oldFile;
- masterPtr->id = oldId;
- return TCL_ERROR;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ImgXpmGetData --
- *
- * Given a file name or ASCII string, this procedure parses the
- * file or string contents to produce binary data for a pixmap.
- *
- * Results:
- * If the pixmap description was parsed successfully then the data
- * is read into an array of strings. This array will later be used
- * to create X Pixmaps for each instance.
- *
- * Side effects:
- * The masterPtr->data array is allocated when successful. Contents of
- * *masterPtr is changed only when successful.
- *----------------------------------------------------------------------
- */
- static int
- ImgXpmGetData(interp, masterPtr)
- Tcl_Interp *interp; /* For reporting errors. */
- PixmapMaster *masterPtr;
- {
- char ** data;
- int isAllocated; /* do we need to free "data"? */
- int listArgc;
- char ** listArgv = NULL;
- int numLines;
- int size[2];
- int cpp;
- int ncolors;
-
- if (masterPtr->id != NULL) {
- data = ImgXpmGetDataFromId(interp, masterPtr->id);
- isAllocated = 0;
- }
- else if (masterPtr->fileString != NULL) {
- data = ImgXpmGetDataFromFile(interp, masterPtr->fileString, &numLines);
- isAllocated = 1;
- }
- else if (masterPtr->dataString != NULL) {
- data = ImgXpmGetDataFromString(interp,masterPtr->dataString,&numLines);
- isAllocated = 1;
- }
- else {
- /* Should have been enforced by ImgXpmConfigureMaster() */
- panic("ImgXpmGetData(): -data, -file and -id are all NULL");
- }
-
- if (data == NULL) {
- return TCL_ERROR;
- }
-
- /* Parse the first line of the data and get info about this pixmap */
- if (Tcl_SplitList(interp, data[0], &listArgc, &listArgv) != TCL_OK) {
- goto error;
- }
-
- if (listArgc < 4) {
- Tcl_AppendResult(interp, "File format error", NULL);
- goto error;
- }
-
- if (Tcl_GetInt(interp, listArgv[0], &size[0]) != TCL_OK) {
- goto error;
- }
- if (Tcl_GetInt(interp, listArgv[1], &size[1]) != TCL_OK) {
- goto error;
- }
- if (Tcl_GetInt(interp, listArgv[2], &ncolors) != TCL_OK) {
- goto error;
- }
- if (Tcl_GetInt(interp, listArgv[3], &cpp) != TCL_OK) {
- goto error;
- }
-
- if (isAllocated) {
- if (numLines != size[1] + ncolors + 1) {
- /* the number of lines read from the file/data
- * is not the same as specified in the data
- */
- goto error;
- }
- }
-
- done:
- if (masterPtr->isDataAlloced && masterPtr->data) {
- ckfree((char*)masterPtr->data);
- }
- masterPtr->isDataAlloced = isAllocated;
- masterPtr->data = data;
- masterPtr->size[0] = size[0];
- masterPtr->size[1] = size[1];
- masterPtr->cpp = cpp;
- masterPtr->ncolors = ncolors;
-
- return TCL_OK;
-
- error:
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "File format error", NULL);
-
- if (isAllocated && data) {
- ckfree((char*)data);
- }
- if (listArgv) {
- ckfree((char*)listArgv);
- }
-
- return TCL_ERROR;
- }
-
- static char ** ImgXpmGetDataFromId(interp, id)
- Tcl_Interp * interp;
- char * id;
- {
- Tcl_HashEntry * hashPtr;
-
- if (xpmTableInited == 0) {
- hashPtr = NULL;
- } else {
- hashPtr = Tcl_FindHashEntry(&xpmTable, id);
- }
-
- if (hashPtr == NULL) {
- Tcl_AppendResult(interp, "unknown pixmap ID \"", id,
- "\"", NULL);
- return (char**)NULL;
- } else {
- return (char**)Tcl_GetHashValue(hashPtr);
- }
- }
-
- static char ** ImgXpmGetDataFromString(interp, string, numLines_return)
- Tcl_Interp * interp;
- char * string;
- int * numLines_return;
- {
- int skipped;
- int quoated;
- char * p, * list;
- int numLines;
- char ** data;
-
- /* skip the leading blanks (leading blanks are not defined in the
- * the XPM definition, but skipping them shouldn't hurt. Also, the ability
- * to skip the leading blanks is good for using in-line XPM data in TCL
- * scripts
- */
- while (isspace(*string)) {
- ++ string;
- }
-
- /* parse the header */
- if (strncmp("/* XPM ", string, 7) != 0) {
- goto error;
- }
- /* skip the first two lines */
- for (skipped=0,p=string;;) {
- while (*p && *p != '\n') {
- ++ p;
- }
- if (*p) {
- ++ p;
- ++ skipped;
- } else {
- goto error;
- }
- if (skipped == 2) {
- break;
- }
- }
-
- /* Change the buffer in to a proper TCL list */
- quoated = 0;
- list = p;
- while (*p) {
- if (quoated) {
- if (*p == '"') {
- quoated = 1;
- }
- ++ p;
- }
- else {
- if (*p == '/' && *(p+1) == '*') {
- /*
- * Skip comments
- */
- *p++ = ' ';
- *p++ = ' ';
- while (1) {
- if (*p == 0) {
- break;
- }
- if (*p == '*' && *(p+1) == '/') {
- *p++ = ' ';
- *p++ = ' ';
- break;
- }
- *p++ = ' ';
- }
- }
-
- if (*p == '"') {
- quoated = 0;
- ++ p;
- continue;
- }
- if (*p == '\r') {
- *p = ' ';
- }
- else if (*p == '\n') {
- *p = ' ';
- }
- else if (*p == ',') {
- *p = ' ';
- }
- else if (*p == '}') {
- *p = 0;
- break;
- }
- ++p;
- }
- }
-
- /* The following code depends on the fact that Tcl_SplitList
- * strips away double quoates inside a list: ie:
- * if string == "\"1\" \"2\"" then
- * list[0] = "1"
- * list[1] = "2"
- * and NOT
- *
- * list[0] = "\"1\""
- * list[1] = "\"2\""
- */
- if (Tcl_SplitList(interp, list, &numLines, &data) != TCL_OK) {
- goto error;
- } else {
- if (numLines == 0) {
- /* error: empty data? */
- if (data != NULL) {
- ckfree((char*)data);
- goto error;
- }
- }
- * numLines_return = numLines;
- return data;
- }
-
- error:
- Tcl_AppendResult(interp, "File format error", NULL);
- return (char**) NULL;
- }
-
- static char ** ImgXpmGetDataFromFile(interp, fileName, numLines_return)
- Tcl_Interp * interp;
- char * fileName;
- int * numLines_return;
- {
- int fileId, size;
- char ** data;
- struct stat statBuf;
- char *cmdBuffer = NULL;
- Tcl_DString buffer; /* initialized by Tcl_TildeSubst */
-
- fileName = Tcl_TildeSubst(interp, fileName, &buffer);
- if (fileName == NULL) {
- goto error;
- }
-
- fileId = open(fileName, O_RDONLY, 0);
- if (fileId < 0) {
- Tcl_AppendResult(interp, "couldn't read file \"", fileName,
- "\": ", Tcl_PosixError(interp), (char *) NULL);
- goto error;
- }
- if (fstat(fileId, &statBuf) == -1) {
- Tcl_AppendResult(interp, "couldn't stat file \"", fileName,
- "\": ", Tcl_PosixError(interp), (char *) NULL);
- close(fileId);
- goto error;
- }
- cmdBuffer = (char *) ckalloc((unsigned) statBuf.st_size+1);
- size = read(fileId, cmdBuffer, (size_t) statBuf.st_size);
- if (size < 0) {
- Tcl_AppendResult(interp, "error in reading file \"", fileName,
- "\": ", Tcl_PosixError(interp), (char *) NULL);
- close(fileId);
- goto error;
- }
- if (close(fileId) != 0) {
- Tcl_AppendResult(interp, "error closing file \"", fileName,
- "\": ", Tcl_PosixError(interp), (char *) NULL);
- goto error;
- }
- cmdBuffer[size] = 0;
-
- done:
- data = ImgXpmGetDataFromString(interp, cmdBuffer, numLines_return);
- ckfree(cmdBuffer);
- Tcl_DStringFree(&buffer);
- return data;
-
- error:
- if (cmdBuffer != NULL) {
- ckfree(cmdBuffer);
- }
- Tcl_DStringFree(&buffer);
- return (char**)NULL;
- }
-
- /*----------------------------------------------------------------------
- * ImgXpmGetPixmapFromData --
- *
- * Creates a pixmap for an image instance.
- *----------------------------------------------------------------------
- */
- static int ImgXpmGetPixmapFromData(interp, masterPtr, instancePtr)
- Tcl_Interp * interp;
- PixmapMaster *masterPtr;
- PixmapInstance *instancePtr;
- {
- XImage * image = NULL, * mask = NULL;
- int pad, depth, i, j, k, n, lOffset, isTransp = 0, isMono;
- int listArgc;
- char ** listArgv;
- ColorStruct * colors;
- GC gc;
- Display *display = Tk_Display(instancePtr->tkwin);
-
- depth = Tk_Depth(instancePtr->tkwin);
- if (depth > 16) {
- pad = 32;
- }
- else if (depth > 8) {
- pad = 16;
- }
- else {
- pad = 8;
- }
-
- switch ((Tk_Visual(instancePtr->tkwin))->class) {
- case StaticGray:
- case GrayScale:
- isMono = 1;
- break;
- default:
- isMono = 0;
- }
-
- /*
- * Create the XImage structures to store the temporary image
- */
- image = XCreateImage(display,
- Tk_Visual(instancePtr->tkwin),
- depth, ZPixmap, 0, 0,
- masterPtr->size[0], masterPtr->size[1], pad, 0);
- image->data =
- (char *)ckalloc(image->bytes_per_line * masterPtr->size[1]);
-
- mask = XCreateImage(display,
- Tk_Visual(instancePtr->tkwin),
- 1, ZPixmap, 0, 0,
- masterPtr->size[0], masterPtr->size[1], pad, 0);
- mask->data =
- (char *)ckalloc(mask->bytes_per_line * masterPtr->size[1]);
-
- /*
- * Parse the colors
- */
- lOffset = 1;
- colors = (ColorStruct*)ckalloc(sizeof(ColorStruct)*masterPtr->ncolors);
- listArgv = 0;
-
- /* Initialize the color structures */
- for (i=0; i<masterPtr->ncolors; i++) {
- colors[i].colorPtr = NULL;
- if (masterPtr->cpp == 1) {
- colors[i].c = 0;
- } else {
- colors[i].cstring = (char*)ckalloc(masterPtr->cpp);
- colors[i].cstring[0] = 0;
- }
- }
-
- for (i=0; i<masterPtr->ncolors; i++) {
- char * colorName = NULL;
-
- if (Tcl_SplitList(interp,
- masterPtr->data[i+lOffset]+masterPtr->cpp,
- &listArgc, &listArgv) != TCL_OK) {
- colors[i].colorPtr = NULL;
- continue;
- }
- if (listArgc < 2) {
- colors[i].colorPtr = NULL;
- continue;
- }
- for (j=0; j<listArgc; j+=2) {
- /* The symbolic color names are not implemented
- */
- if (listArgv[j][0] == 'm') {
- if (isMono) {
- if (depth == 1) {
- colorName = listArgv[j+1];
- break;
- } else if (colorName == NULL) { /* use as default */
- colorName = listArgv[j+1];
- continue;
- }
- }
- }
- else if (listArgv[j][0] == 'g' && listArgv[j][1] == '4') {
- if (isMono) {
- if (depth == 4) {
- colorName = listArgv[j+1];
- break;
- } else if (colorName == NULL) { /* use as default */
- colorName = listArgv[j+1];
- continue;
- }
- }
- }
- else if (listArgv[j][0] == 'g') {
- if (isMono) {
- if (depth > 4) {
- colorName = listArgv[j+1];
- break;
- } else if (colorName == NULL) { /* use as default */
- colorName = listArgv[j+1];
- continue;
- }
- }
- }
- else if (listArgv[j][0] == 'c') {
- if (!isMono || colorName == NULL) {
- colorName = listArgv[j+1];
- break;
- }
- }
- }
- if (colorName == NULL) {
- colorName = listArgv[1];
- }
-
- if (masterPtr->cpp == 1) {
- colors[i].c = masterPtr->data[i+lOffset][0];
- } else {
- strncpy(colors[i].cstring, masterPtr->data[i+lOffset],
- (size_t)masterPtr->cpp);
- }
-
- if (strcasecmp(listArgv[j+1], "none") != 0) {
- colors[i].colorPtr = Tk_GetColor(interp,
- instancePtr->tkwin, Tk_GetUid(colorName));
- if (colors[i].colorPtr == NULL) {
- colors[i].colorPtr = Tk_GetColor(interp,
- instancePtr->tkwin, Tk_GetUid("black"));
- }
- }
- ckfree((char*)listArgv);
- listArgv = 0;
- }
-
- lOffset += masterPtr->ncolors;
-
- /*
- * Parse the main body of the image
- */
- for (i=0; i<masterPtr->size[1]; i++) {
- char * p = masterPtr->data[i+lOffset];
-
- for (j=0; j<masterPtr->size[0]; j++) {
- if (masterPtr->cpp == 1) {
- for (k=0; k<masterPtr->ncolors; k++) {
- if (*p == colors[k].c) {
- if (colors[k].colorPtr != NULL) {
- XPutPixel(image, j, i, colors[k].colorPtr->pixel);
- XPutPixel(mask, j, i, 1);
- } else {
- XPutPixel(mask, j, i, 0);
- isTransp = 1;
- }
- break;
- }
- }
- if (*p) {
- p++;
- }
- } else {
- for (k=0; k<masterPtr->ncolors; k++) {
- if (strncmp(p, colors[k].cstring,
- (size_t)masterPtr->cpp) == 0) {
- if (colors[k].colorPtr != NULL) {
- XPutPixel(image, j, i, colors[k].colorPtr->pixel);
- XPutPixel(mask, j, i, 1);
- } else {
- XPutPixel(mask, j, i, 0);
- isTransp = 1;
- }
- break;
- }
- }
- for (k=0; *p && k<masterPtr->cpp; k++) {
- p++;
- }
- }
- }
- }
-
- /*
- * Create the pixmap(s) from the XImage structure. The mask is created
- * only if needed (i.e., there is at least one transparent pixel)
- */
- instancePtr->colors = colors;
-
- /* main image */
- instancePtr->pixmap = Tk_GetPixmap(display,
- Tk_WindowId(instancePtr->tkwin),
- masterPtr->size[0], masterPtr->size[1], depth);
-
- gc = Tk_GetGC(instancePtr->tkwin, 0, NULL);
- XPutImage(display, instancePtr->pixmap,
- gc, image, 0, 0, 0, 0, masterPtr->size[0], masterPtr->size[1]);
- Tk_FreeGC(display, gc);
-
- /* mask, if necessary */
- if (isTransp) {
- instancePtr->mask = Tk_GetPixmap(display,
- Tk_WindowId(instancePtr->tkwin),
- masterPtr->size[0], masterPtr->size[1], 1);
- gc = XCreateGC(display, instancePtr->mask, 0, NULL);
- XPutImage(display, instancePtr->mask,
- gc, mask, 0, 0, 0, 0, masterPtr->size[0], masterPtr->size[1]);
- XFreeGC(display, gc);
- } else {
- instancePtr->mask = None;
- }
-
- /* Done */
- if (image) {
- ckfree((char*)image->data);
- image->data = NULL;
- XDestroyImage(image);
- }
- if (mask) {
- ckfree((char*)mask->data);
- mask->data = NULL;
- XDestroyImage(mask);
- }
-
- if (listArgv) {
- ckfree((char*)listArgv);
- }
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ImgXpmConfigureInstance --
- *
- * This procedure is called to create displaying information for
- * a pixmap image instance based on the configuration information
- * in the master. It is invoked both when new instances are
- * created and when the master is reconfigured.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Generates errors via Tk_BackgroundError if there are problems
- * in setting up the instance.
- *
- *----------------------------------------------------------------------
- */
- static void
- ImgXpmConfigureInstance(instancePtr)
- PixmapInstance *instancePtr; /* Instance to reconfigure. */
- {
- PixmapMaster *masterPtr = instancePtr->masterPtr;
- int xpmCode;
- XGCValues gcValues;
- GC gc;
- unsigned int gcMask;
-
- if (instancePtr->pixmap != None) {
- XFreePixmap(Tk_Display(instancePtr->tkwin), instancePtr->pixmap);
- }
- if (instancePtr->mask != None) {
- XFreePixmap(Tk_Display(instancePtr->tkwin), instancePtr->mask);
- }
-
- if (instancePtr->colors != NULL) {
- int i;
- for (i=0; i<masterPtr->ncolors; i++) {
- if (instancePtr->colors[i].colorPtr != NULL) {
- Tk_FreeColor(instancePtr->colors[i].colorPtr);
- }
- if (masterPtr->cpp != 1) {
- ckfree(instancePtr->colors[i].cstring);
- }
- }
- ckfree((char*)instancePtr->colors);
- }
-
- if (Tk_WindowId(instancePtr->tkwin) == None) {
- Tk_MakeWindowExist(instancePtr->tkwin);
- }
-
- /* Assumption: masterPtr->data is always non NULL (enfored by
- * ImgXpmConfigureMaster()). Also, the data must be in a valid
- * format (partially enforced by ImgXpmConfigureMaster(), see comments
- * inside that function).
- */
- ImgXpmGetPixmapFromData(masterPtr->interp, masterPtr, instancePtr);
-
- /* Allocate a GC for drawing this instance (mask is not used if there
- * is no transparent pixels inside the image).*/
- if (instancePtr->mask != None) {
- gcMask = GCGraphicsExposures|GCClipMask;
- } else {
- gcMask = GCGraphicsExposures;
- }
- gcValues.graphics_exposures = False;
- gcValues.clip_mask = instancePtr->mask;
-
- gc = Tk_GetGC(instancePtr->tkwin, gcMask, &gcValues);
-
- if (instancePtr->gc != None) {
- Tk_FreeGC(Tk_Display(instancePtr->tkwin), instancePtr->gc);
- }
- instancePtr->gc = gc;
- return;
- }
-
- /*
- *--------------------------------------------------------------
- *
- * ImgXpmCmd --
- *
- * This procedure is invoked to process the Tcl command
- * that corresponds to an image managed by this module.
- * See the user documentation for details on what it does.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * See the user documentation.
- *
- *--------------------------------------------------------------
- */
-
- static int
- ImgXpmCmd(clientData, interp, argc, argv)
- ClientData clientData; /* Information about button widget. */
- Tcl_Interp *interp; /* Current interpreter. */
- int argc; /* Number of arguments. */
- char **argv; /* Argument strings. */
- {
- PixmapMaster *masterPtr = (PixmapMaster *) clientData;
- int c, code;
- size_t length;
-
- if (argc < 2) {
- sprintf(interp->result,
- "wrong # args: should be \"%.50s option ?arg arg ...?\"",
- argv[0]);
- return TCL_ERROR;
- }
- c = argv[1][0];
- length = strlen(argv[1]);
- if ((c == 'c') && (strncmp(argv[1], "cget", length) == 0)
- && (length >= 2)) {
- if (argc != 3) {
- Tcl_AppendResult(interp, "wrong # args: should be \"",
- argv[0], " cget option\"",
- (char *) NULL);
- return TCL_ERROR;
- }
- return Tk_ConfigureValue(interp, Tk_MainWindow(interp), configSpecs,
- (char *) masterPtr, argv[2], 0);
- } else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)
- && (length >= 2)) {
- if (argc == 2) {
- code = Tk_ConfigureInfo(interp, Tk_MainWindow(interp),
- configSpecs, (char *) masterPtr, (char *) NULL, 0);
- } else if (argc == 3) {
- code = Tk_ConfigureInfo(interp, Tk_MainWindow(interp),
- configSpecs, (char *) masterPtr, argv[2], 0);
- } else {
- code = ImgXpmConfigureMaster(masterPtr, argc-2, argv+2,
- TK_CONFIG_ARGV_ONLY);
- }
- return code;
- }
-
- error:
-
- Tcl_AppendResult(interp, "bad option \"", argv[1],
- "\": must be cget or configure", (char *) NULL);
- return TCL_ERROR;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ImgXpmGet --
- *
- * This procedure is called for each use of a pixmap image in a
- * widget.
- *
- * Results:
- * The return value is a token for the instance, which is passed
- * back to us in calls to ImgXpmDisplay and ImgXpmFre.
- *
- * Side effects:
- * A data structure is set up for the instance (or, an existing
- * instance is re-used for the new one).
- *
- *----------------------------------------------------------------------
- */
-
- static ClientData
- ImgXpmGet(tkwin, masterData)
- Tk_Window tkwin; /* Window in which the instance will be
- * used. */
- ClientData masterData; /* Pointer to our master structure for the
- * image. */
- {
- PixmapMaster *masterPtr = (PixmapMaster *) masterData;
- PixmapInstance *instancePtr;
-
- /*
- * See if there is already an instance for this window. If so
- * then just re-use it.
- */
-
- for (instancePtr = masterPtr->instancePtr; instancePtr != NULL;
- instancePtr = instancePtr->nextPtr) {
- if (instancePtr->tkwin == tkwin) {
- instancePtr->refCount++;
- return (ClientData) instancePtr;
- }
- }
-
- /*
- * The image isn't already in use in this window. Make a new
- * instance of the image.
- */
- instancePtr = (PixmapInstance *) ckalloc(sizeof(PixmapInstance));
- instancePtr->refCount = 1;
- instancePtr->masterPtr = masterPtr;
- instancePtr->tkwin = tkwin;
- instancePtr->pixmap = None;
- instancePtr->mask = None;
- instancePtr->gc = None;
- instancePtr->nextPtr = masterPtr->instancePtr;
- instancePtr->colors = NULL;
- masterPtr->instancePtr = instancePtr;
- ImgXpmConfigureInstance(instancePtr);
-
- /*
- * If this is the first instance, must set the size of the image.
- */
- if (instancePtr->nextPtr == NULL) {
- if (masterPtr->data) {
- Tk_ImageChanged(masterPtr->tkMaster, 0, 0,
- masterPtr->size[0], masterPtr->size[1],
- masterPtr->size[0], masterPtr->size[1]);
- } else {
- Tk_ImageChanged(masterPtr->tkMaster, 0, 0, 0, 0, 0, 0);
- }
- }
-
- return (ClientData) instancePtr;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ImgXpmDisplay --
- *
- * This procedure is invoked to draw a pixmap image.
- *
- * Results:
- * None.
- *
- * Side effects:
- * A portion of the image gets rendered in a pixmap or window.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- ImgXpmDisplay(clientData, display, drawable, imageX, imageY, width,
- height, drawableX, drawableY)
- ClientData clientData; /* Pointer to PixmapInstance structure for
- * for instance to be displayed. */
- Display *display; /* Display on which to draw image. */
- Drawable drawable; /* Pixmap or window in which to draw image. */
- int imageX, imageY; /* Upper-left corner of region within image
- * to draw. */
- int width, height; /* Dimensions of region within image to draw.*/
- int drawableX, drawableY; /* Coordinates within drawable that
- * correspond to imageX and imageY. */
- {
- PixmapInstance *instancePtr = (PixmapInstance *) clientData;
-
- /*
- * If there's no graphics context, it means that an error occurred
- * while creating the image instance so it can't be displayed.
- */
-
- if (instancePtr->gc == None) {
- return;
- }
-
- /*
- * We always use masking: modify the mask origin within
- * the graphics context to line up with the image's origin.
- * Then draw the image and reset the clip origin, if there's
- * a mask.
- */
-
- XSetClipOrigin(display, instancePtr->gc, drawableX - imageX,
- drawableY - imageY);
- XCopyArea(display, instancePtr->pixmap, drawable, instancePtr->gc,
- imageX, imageY, (unsigned) width, (unsigned) height,
- drawableX, drawableY);
- XSetClipOrigin(display, instancePtr->gc, 0, 0);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ImgXpmFree --
- *
- * This procedure is called when a widget ceases to use a
- * particular instance of an image.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Internal data structures get cleaned up.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- ImgXpmFree(clientData, display)
- ClientData clientData; /* Pointer to PixmapInstance structure for
- * for instance to be displayed. */
- Display *display; /* Display containing window that used image.*/
- {
- PixmapInstance *instancePtr = (PixmapInstance *) clientData;
- PixmapInstance *prevPtr;
-
- instancePtr->refCount--;
- if (instancePtr->refCount > 0) {
- return;
- }
-
- /*
- * There are no more uses of the image within this widget. Free
- * the instance structure.
- */
- if (instancePtr->pixmap != None) {
- XFreePixmap(display, instancePtr->pixmap);
- }
- if (instancePtr->mask != None) {
- XFreePixmap(display, instancePtr->mask);
- }
- if (instancePtr->gc != None) {
- Tk_FreeGC(display, instancePtr->gc);
- }
- if (instancePtr->colors != NULL) {
- int i;
- for (i=0; i<instancePtr->masterPtr->ncolors; i++) {
- if (instancePtr->colors[i].colorPtr != NULL) {
- Tk_FreeColor(instancePtr->colors[i].colorPtr);
- }
- if (instancePtr->masterPtr->cpp != 1) {
- ckfree(instancePtr->colors[i].cstring);
- }
- }
- ckfree((char*)instancePtr->colors);
- }
-
- if (instancePtr->masterPtr->instancePtr == instancePtr) {
- instancePtr->masterPtr->instancePtr = instancePtr->nextPtr;
- } else {
- for (prevPtr = instancePtr->masterPtr->instancePtr;
- prevPtr->nextPtr != instancePtr; prevPtr = prevPtr->nextPtr) {
- /* Empty loop body */
- }
- prevPtr->nextPtr = instancePtr->nextPtr;
- }
- ckfree((char *) instancePtr);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ImgXpmDelete --
- *
- * This procedure is called by the image code to delete the
- * master structure for an image.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Resources associated with the image get freed.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- ImgXpmDelete(masterData)
- ClientData masterData; /* Pointer to PixmapMaster structure for
- * image. Must not have any more instances. */
- {
- PixmapMaster *masterPtr = (PixmapMaster *) masterData;
-
- if (masterPtr->instancePtr != NULL) {
- panic("tried to delete pixmap image when instances still exist");
- }
- masterPtr->tkMaster = NULL;
- if (masterPtr->imageCmd != NULL) {
- Tcl_DeleteCommand(masterPtr->interp,
- Tcl_GetCommandName(masterPtr->interp, masterPtr->imageCmd));
- }
- if (masterPtr->isDataAlloced && masterPtr->data != NULL) {
- ckfree((char*)masterPtr->data);
- }
- Tk_FreeOptions(configSpecs, (char *) masterPtr, (Display *) NULL, 0);
- ckfree((char *) masterPtr);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ImgXpmCmdDeletedProc --
- *
- * This procedure is invoked when the image command for an image
- * is deleted. It deletes the image.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The image is deleted.
- *
- *----------------------------------------------------------------------
- */
- static void
- ImgXpmCmdDeletedProc(clientData)
- ClientData clientData; /* Pointer to PixmapMaster structure for
- * image. */
- {
- PixmapMaster *masterPtr = (PixmapMaster *) clientData;
-
- masterPtr->imageCmd = NULL;
- if (masterPtr->tkMaster != NULL) {
- Tk_DeleteImage(masterPtr->interp, Tk_NameOfImage(masterPtr->tkMaster));
- }
- }
-
-
- /*
- *----------------------------------------------------------------------
- *
- * Tix_DefinePixmap
- *
- * Define an XPM data structure with an unique name, so that you can
- * later refer to this pixmap using the -id switch in [image create
- * pixmap].
- *
- * Results:
- * None.
- *
- * Side effects:
- * The data is stored in a HashTable.
- *----------------------------------------------------------------------
- */
- int
- Tix_DefinePixmap(interp, name, data)
- Tcl_Interp * interp;
- Tk_Uid name; /* Name to use for bitmap. Must not already
- * be defined as a bitmap. */
- char **data;
- {
- int new;
- Tcl_HashEntry *hshPtr;
-
- if (!xpmTableInited) {
- xpmTableInited = 1;
- Tcl_InitHashTable(&xpmTable, TCL_ONE_WORD_KEYS);
- }
-
- hshPtr = Tcl_CreateHashEntry(&xpmTable, name, &new);
- if (!new) {
- Tcl_AppendResult(interp, "pixmap \"", name,
- "\" is already defined", (char *) NULL);
- return TCL_ERROR;
- }
- Tcl_SetHashValue(hshPtr, (char*)data);
- return TCL_OK;
- }
-
- int
- Xpm_Init(interp)
- Tcl_Interp *interp; /* Interpreter in which the package is
- * to be made available. */
- {
- Tk_CreateImageType(&tixPixmapImageType);
- return TCL_OK;
- }
-
- #ifdef STk_CODE
- PRIMITIVE STk_init_pixmap(void)
- {
- extern Tcl_Interp *STk_main_interp;
-
- Xpm_Init(STk_main_interp);
- return UNDEFINED;
- }
- #endif
-
- #else
- /* Some compilers hate to produce an empty object file. */
- static char dumb = '?';
- #endif
-