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diff --git a/tiff/contrib/dbs/xtiff/xtiff.c b/tiff/contrib/dbs/xtiff/xtiff.c
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-/*
- * $Id: xtiff.c,v 1.4 2013-05-02 14:44:29 tgl Exp $
- *
- * xtiff - view a TIFF file in an X window
- *
- * Dan Sears
- * Chris Sears
- *
- * Copyright 1991 by Digital Equipment Corporation, Maynard, Massachusetts.
- *
- * All Rights Reserved
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted,
- * provided that the above copyright notice appear in all copies and that
- * both that copyright notice and this permission notice appear in
- * supporting documentation, and that the name of Digital not be
- * used in advertising or publicity pertaining to distribution of the
- * software without specific, written prior permission.
- *
- * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
- * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
- * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
- * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
- * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- *
- * Revision 1.0 90/05/07
- * Initial release.
- * Revision 2.0 90/12/20
- * Converted to use the Athena Widgets and the Xt Intrinsics.
- *
- * Notes:
- *
- * According to the TIFF 5.0 Specification, it is possible to have
- * both a TIFFTAG_COLORMAP and a TIFFTAG_COLORRESPONSECURVE. This
- * doesn't make sense since a TIFFTAG_COLORMAP is 16 bits wide and
- * a TIFFTAG_COLORRESPONSECURVE is tfBitsPerSample bits wide for each
- * channel. This is probably a bug in the specification.
- * In this case, TIFFTAG_COLORRESPONSECURVE is ignored.
- * This might make sense if TIFFTAG_COLORMAP was 8 bits wide.
- *
- * TIFFTAG_COLORMAP is often incorrectly written as ranging from
- * 0 to 255 rather than from 0 to 65535. CheckAndCorrectColormap()
- * takes care of this.
- *
- * Only ORIENTATION_TOPLEFT is supported correctly. This is the
- * default TIFF and X orientation. Other orientations will be
- * displayed incorrectly.
- *
- * There is no support for or use of 3/3/2 DirectColor visuals.
- * TIFFTAG_MINSAMPLEVALUE and TIFFTAG_MAXSAMPLEVALUE are not supported.
- *
- * Only TIFFTAG_BITSPERSAMPLE values that are 1, 2, 4 or 8 are supported.
- */
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <tiffio.h>
-#include <X11/Xatom.h>
-#include <X11/Intrinsic.h>
-#include <X11/StringDefs.h>
-#include <X11/Xproto.h>
-#include <X11/Shell.h>
-#include <X11/Xaw/Form.h>
-#include <X11/Xaw/List.h>
-#include <X11/Xaw/Label.h>
-#include <X11/cursorfont.h>
-#define XK_MISCELLANY
-#include <X11/keysymdef.h>
-#include "xtifficon.h"
-
-#define TIFF_GAMMA "2.2" /* default gamma from the TIFF 5.0 spec */
-#define ROUND(x) (uint16) ((x) + 0.5)
-#define SCALE(x, s) (((x) * 65535L) / (s))
-#define MCHECK(m) if (!m) { fprintf(stderr, "malloc failed\n"); exit(0); }
-#define MIN(a, b) (((a) < (b)) ? (a) : (b))
-#define MAX(a, b) (((a) > (b)) ? (a) : (b))
-#define VIEWPORT_WIDTH 700
-#define VIEWPORT_HEIGHT 500
-#define KEY_TRANSLATE 20
-
-#ifdef __STDC__
-#define PP(args) args
-#else
-#define PP(args) ()
-#endif
-
-int main PP((int argc, char **argv));
-void OpenTIFFFile PP((void));
-void GetTIFFHeader PP((void));
-void SetNameLabel PP((void));
-void CheckAndCorrectColormap PP((void));
-void SimpleGammaCorrection PP((void));
-void GetVisual PP((void));
-Boolean SearchVisualList PP((int image_depth,
- int visual_class, Visual **visual));
-void GetTIFFImage PP((void));
-void CreateXImage PP((void));
-XtCallbackProc SelectProc PP((Widget w, caddr_t unused_1, caddr_t unused_2));
-void QuitProc PP((void));
-void NextProc PP((void));
-void PreviousProc PP((void));
-void PageProc PP((int direction));
-void EventProc PP((Widget widget, caddr_t unused, XEvent *event));
-void ResizeProc PP((void));
-int XTiffErrorHandler PP((Display *display, XErrorEvent *error_event));
-void Usage PP((void));
-
-int xtVersion = XtSpecificationRelease; /* xtiff depends on R4 or higher */
-
-/*
- * Xt data structures
- */
-Widget shellWidget, formWidget, listWidget, labelWidget, imageWidget;
-
-enum { ButtonQuit = 0, ButtonPreviousPage = 1, ButtonNextPage = 2 };
-
-String buttonStrings[] = { "Quit", "Previous", "Next" };
-
-static XrmOptionDescRec shellOptions[] = {
- { "-help", "*help", XrmoptionNoArg, (caddr_t) "True" },
- { "-gamma", "*gamma", XrmoptionSepArg, NULL },
- { "-usePixmap", "*usePixmap", XrmoptionSepArg, NULL },
- { "-viewportWidth", "*viewportWidth", XrmoptionSepArg, NULL },
- { "-viewportHeight", "*viewportHeight", XrmoptionSepArg, NULL },
- { "-translate", "*translate", XrmoptionSepArg, NULL },
- { "-verbose", "*verbose", XrmoptionSepArg, NULL }
-};
-
-typedef struct {
- Boolean help;
- float gamma;
- Boolean usePixmap;
- uint32 viewportWidth;
- uint32 viewportHeight;
- int translate;
- Boolean verbose;
-} AppData, *AppDataPtr;
-
-AppData appData;
-
-XtResource clientResources[] = {
- {
- "help", XtCBoolean, XtRBoolean, sizeof(Boolean),
- XtOffset(AppDataPtr, help), XtRImmediate, (XtPointer) False
- }, {
- "gamma", "Gamma", XtRFloat, sizeof(float),
- XtOffset(AppDataPtr, gamma), XtRString, (XtPointer) TIFF_GAMMA
- }, {
- "usePixmap", "UsePixmap", XtRBoolean, sizeof(Boolean),
- XtOffset(AppDataPtr, usePixmap), XtRImmediate, (XtPointer) True
- }, {
- "viewportWidth", "ViewportWidth", XtRInt, sizeof(int),
- XtOffset(AppDataPtr, viewportWidth), XtRImmediate,
- (XtPointer) VIEWPORT_WIDTH
- }, {
- "viewportHeight", "ViewportHeight", XtRInt, sizeof(int),
- XtOffset(AppDataPtr, viewportHeight), XtRImmediate,
- (XtPointer) VIEWPORT_HEIGHT
- }, {
- "translate", "Translate", XtRInt, sizeof(int),
- XtOffset(AppDataPtr, translate), XtRImmediate, (XtPointer) KEY_TRANSLATE
- }, {
- "verbose", "Verbose", XtRBoolean, sizeof(Boolean),
- XtOffset(AppDataPtr, verbose), XtRImmediate, (XtPointer) True
- }
-};
-
-Arg formArgs[] = {
- { XtNresizable, True }
-};
-
-Arg listArgs[] = {
- { XtNresizable, False },
- { XtNborderWidth, 0 },
- { XtNdefaultColumns, 3 },
- { XtNforceColumns, True },
- { XtNlist, (int) buttonStrings },
- { XtNnumberStrings, XtNumber(buttonStrings) },
- { XtNtop, XtChainTop },
- { XtNleft, XtChainLeft },
- { XtNbottom, XtChainTop },
- { XtNright, XtChainLeft }
-};
-
-Arg labelArgs[] = {
- { XtNresizable, False },
- { XtNwidth, 200 },
- { XtNborderWidth, 0 },
- { XtNjustify, XtJustifyLeft },
- { XtNtop, XtChainTop },
- { XtNleft, XtChainLeft },
- { XtNbottom, XtChainTop },
- { XtNright, XtChainLeft }
-};
-
-Arg imageArgs[] = {
- { XtNresizable, True },
- { XtNborderWidth, 0 },
- { XtNtop, XtChainTop },
- { XtNleft, XtChainLeft },
- { XtNbottom, XtChainTop },
- { XtNright, XtChainLeft }
-};
-
-XtActionsRec actionsTable[] = {
- { "quit", QuitProc },
- { "next", NextProc },
- { "previous", PreviousProc },
- { "notifyresize", ResizeProc }
-};
-
-char translationsTable[] = "<Key>q: quit() \n \
- <Key>Q: quit() \n \
- <Message>WM_PROTOCOLS: quit()\n \
- <Key>p: previous() \n \
- <Key>P: previous() \n \
- <Key>n: next() \n \
- <Key>N: next() \n \
- <Configure>: notifyresize()";
-
-/*
- * X data structures
- */
-Colormap xColormap;
-Display * xDisplay;
-Pixmap xImagePixmap;
-Visual * xVisual;
-XImage * xImage;
-GC xWinGc;
-int xImageDepth, xScreen, xRedMask, xGreenMask, xBlueMask,
- xOffset = 0, yOffset = 0, grabX = -1, grabY = -1;
-unsigned char basePixel = 0;
-
-/*
- * TIFF data structures
- */
-TIFF * tfFile = NULL;
-uint32 tfImageWidth, tfImageHeight;
-uint16 tfBitsPerSample, tfSamplesPerPixel, tfPlanarConfiguration,
- tfPhotometricInterpretation, tfGrayResponseUnit,
- tfImageDepth, tfBytesPerRow;
-int tfDirectory = 0, tfMultiPage = False;
-double tfUnitMap, tfGrayResponseUnitMap[] = {
- -1, -10, -100, -1000, -10000, -100000
- };
-
-/*
- * display data structures
- */
-double *dRed, *dGreen, *dBlue;
-
-/*
- * shared data structures
- */
-uint16 * redMap = NULL, *greenMap = NULL, *blueMap = NULL,
- *grayMap = NULL, colormapSize;
-char * imageMemory;
-char * fileName;
-
-int
-main(int argc, char **argv)
-{
- XSetWindowAttributes window_attributes;
- Widget widget_list[3];
- Arg args[5];
-
- setbuf(stdout, NULL); setbuf(stderr, NULL);
-
- shellWidget = XtInitialize(argv[0], "XTiff", shellOptions,
- XtNumber(shellOptions), &argc, argv);
-
- XSetErrorHandler(XTiffErrorHandler);
-
- XtGetApplicationResources(shellWidget, &appData,
- (XtResourceList) clientResources, (Cardinal) XtNumber(clientResources),
- (ArgList) NULL, (Cardinal) 0);
-
- if ((argc <= 1) || (argc > 2) || appData.help)
- Usage();
-
- if (appData.verbose == False) {
- TIFFSetErrorHandler(0);
- TIFFSetWarningHandler(0);
- }
-
- fileName = argv[1];
-
- xDisplay = XtDisplay(shellWidget);
- xScreen = DefaultScreen(xDisplay);
-
- OpenTIFFFile();
- GetTIFFHeader();
- SimpleGammaCorrection();
- GetVisual();
- GetTIFFImage();
-
- /*
- * Send visual, colormap, depth and iconPixmap to shellWidget.
- * Sending the visual to the shell is only possible with the advent of R4.
- */
- XtSetArg(args[0], XtNvisual, xVisual);
- XtSetArg(args[1], XtNcolormap, xColormap);
- XtSetArg(args[2], XtNdepth,
- xImageDepth == 1 ? DefaultDepth(xDisplay, xScreen) : xImageDepth);
- XtSetArg(args[3], XtNiconPixmap,
- XCreateBitmapFromData(xDisplay, RootWindow(xDisplay, xScreen),
- xtifficon_bits, xtifficon_width, xtifficon_height));
- XtSetArg(args[4], XtNallowShellResize, True);
- XtSetValues(shellWidget, args, 5);
-
- /*
- * widget instance hierarchy
- */
- formWidget = XtCreateManagedWidget("form", formWidgetClass,
- shellWidget, formArgs, XtNumber(formArgs));
-
- widget_list[0] = listWidget = XtCreateWidget("list",
- listWidgetClass, formWidget, listArgs, XtNumber(listArgs));
-
- widget_list[1] = labelWidget = XtCreateWidget("label",
- labelWidgetClass, formWidget, labelArgs, XtNumber(labelArgs));
-
- widget_list[2] = imageWidget = XtCreateWidget("image",
- widgetClass, formWidget, imageArgs, XtNumber(imageArgs));
-
- XtManageChildren(widget_list, XtNumber(widget_list));
-
- /*
- * initial widget sizes - for small images let xtiff size itself
- */
- if (tfImageWidth >= appData.viewportWidth) {
- XtSetArg(args[0], XtNwidth, appData.viewportWidth);
- XtSetValues(shellWidget, args, 1);
- }
- if (tfImageHeight >= appData.viewportHeight) {
- XtSetArg(args[0], XtNheight, appData.viewportHeight);
- XtSetValues(shellWidget, args, 1);
- }
-
- XtSetArg(args[0], XtNwidth, tfImageWidth);
- XtSetArg(args[1], XtNheight, tfImageHeight);
- XtSetValues(imageWidget, args, 2);
-
- /*
- * formWidget uses these constraints but they are stored in the children.
- */
- XtSetArg(args[0], XtNfromVert, listWidget);
- XtSetValues(imageWidget, args, 1);
- XtSetArg(args[0], XtNfromHoriz, listWidget);
- XtSetValues(labelWidget, args, 1);
-
- SetNameLabel();
-
- XtAddCallback(listWidget, XtNcallback, (XtCallbackProc) SelectProc,
- (XtPointer) NULL);
-
- XtAddActions(actionsTable, XtNumber(actionsTable));
- XtSetArg(args[0], XtNtranslations,
- XtParseTranslationTable(translationsTable));
- XtSetValues(formWidget, &args[0], 1);
- XtSetValues(imageWidget, &args[0], 1);
-
- /*
- * This is intended to be a little faster than going through
- * the translation manager.
- */
- XtAddEventHandler(imageWidget, ExposureMask | ButtonPressMask
- | ButtonReleaseMask | Button1MotionMask | KeyPressMask,
- False, EventProc, NULL);
-
- XtRealizeWidget(shellWidget);
-
- window_attributes.cursor = XCreateFontCursor(xDisplay, XC_fleur);
- XChangeWindowAttributes(xDisplay, XtWindow(imageWidget),
- CWCursor, &window_attributes);
-
- CreateXImage();
-
- XtMainLoop();
-
- return 0;
-}
-
-void
-OpenTIFFFile()
-{
- if (tfFile != NULL)
- TIFFClose(tfFile);
-
- if ((tfFile = TIFFOpen(fileName, "r")) == NULL) {
- fprintf(appData.verbose ? stderr : stdout,
- "xtiff: can't open %s as a TIFF file\n", fileName);
- exit(0);
- }
-
- tfMultiPage = (TIFFLastDirectory(tfFile) ? False : True);
-}
-
-void
-GetTIFFHeader()
-{
- register int i;
-
- if (!TIFFSetDirectory(tfFile, tfDirectory)) {
- fprintf(stderr, "xtiff: can't seek to directory %d in %s\n",
- tfDirectory, fileName);
- exit(0);
- }
-
- TIFFGetField(tfFile, TIFFTAG_IMAGEWIDTH, &tfImageWidth);
- TIFFGetField(tfFile, TIFFTAG_IMAGELENGTH, &tfImageHeight);
-
- /*
- * If the following tags aren't present then use the TIFF defaults.
- */
- TIFFGetFieldDefaulted(tfFile, TIFFTAG_BITSPERSAMPLE, &tfBitsPerSample);
- TIFFGetFieldDefaulted(tfFile, TIFFTAG_SAMPLESPERPIXEL, &tfSamplesPerPixel);
- TIFFGetFieldDefaulted(tfFile, TIFFTAG_PLANARCONFIG, &tfPlanarConfiguration);
- TIFFGetFieldDefaulted(tfFile, TIFFTAG_GRAYRESPONSEUNIT, &tfGrayResponseUnit);
-
- tfUnitMap = tfGrayResponseUnitMap[tfGrayResponseUnit];
- colormapSize = 1 << tfBitsPerSample;
- tfImageDepth = tfBitsPerSample * tfSamplesPerPixel;
-
- dRed = (double *) malloc(colormapSize * sizeof(double));
- dGreen = (double *) malloc(colormapSize * sizeof(double));
- dBlue = (double *) malloc(colormapSize * sizeof(double));
- MCHECK(dRed); MCHECK(dGreen); MCHECK(dBlue);
-
- /*
- * If TIFFTAG_PHOTOMETRIC is not present then assign a reasonable default.
- * The TIFF 5.0 specification doesn't give a default.
- */
- if (!TIFFGetField(tfFile, TIFFTAG_PHOTOMETRIC,
- &tfPhotometricInterpretation)) {
- if (tfSamplesPerPixel != 1)
- tfPhotometricInterpretation = PHOTOMETRIC_RGB;
- else if (tfBitsPerSample == 1)
- tfPhotometricInterpretation = PHOTOMETRIC_MINISBLACK;
- else if (TIFFGetField(tfFile, TIFFTAG_COLORMAP,
- &redMap, &greenMap, &blueMap)) {
- tfPhotometricInterpretation = PHOTOMETRIC_PALETTE;
- redMap = greenMap = blueMap = NULL;
- } else
- tfPhotometricInterpretation = PHOTOMETRIC_MINISBLACK;
- }
-
- /*
- * Given TIFFTAG_PHOTOMETRIC extract or create the response curves.
- */
- switch (tfPhotometricInterpretation) {
- case PHOTOMETRIC_RGB:
- redMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- greenMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- blueMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- MCHECK(redMap); MCHECK(greenMap); MCHECK(blueMap);
- for (i = 0; i < colormapSize; i++)
- dRed[i] = dGreen[i] = dBlue[i]
- = (double) SCALE(i, colormapSize - 1);
- break;
- case PHOTOMETRIC_PALETTE:
- if (!TIFFGetField(tfFile, TIFFTAG_COLORMAP,
- &redMap, &greenMap, &blueMap)) {
- redMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- greenMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- blueMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- MCHECK(redMap); MCHECK(greenMap); MCHECK(blueMap);
- for (i = 0; i < colormapSize; i++)
- dRed[i] = dGreen[i] = dBlue[i]
- = (double) SCALE(i, colormapSize - 1);
- } else {
- CheckAndCorrectColormap();
- for (i = 0; i < colormapSize; i++) {
- dRed[i] = (double) redMap[i];
- dGreen[i] = (double) greenMap[i];
- dBlue[i] = (double) blueMap[i];
- }
- }
- break;
- case PHOTOMETRIC_MINISWHITE:
- redMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- greenMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- blueMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- MCHECK(redMap); MCHECK(greenMap); MCHECK(blueMap);
- for (i = 0; i < colormapSize; i++)
- dRed[i] = dGreen[i] = dBlue[i] = (double)
- SCALE(colormapSize-1-i, colormapSize-1);
- break;
- case PHOTOMETRIC_MINISBLACK:
- redMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- greenMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- blueMap = (uint16 *) malloc(colormapSize * sizeof(uint16));
- MCHECK(redMap); MCHECK(greenMap); MCHECK(blueMap);
- for (i = 0; i < colormapSize; i++)
- dRed[i] = dGreen[i] = dBlue[i] = (double) SCALE(i, colormapSize-1);
- break;
- default:
- fprintf(stderr,
- "xtiff: can't display photometric interpretation type %d\n",
- tfPhotometricInterpretation);
- exit(0);
- }
-}
-
-void
-SetNameLabel()
-{
- char buffer[BUFSIZ];
- Arg args[1];
-
- if (tfMultiPage)
- snprintf(buffer, sizeof(buffer), "%s - page %d", fileName, tfDirectory);
- else
- snprintf(buffer, sizeof(buffer), "%s", fileName);
- XtSetArg(args[0], XtNlabel, buffer);
- XtSetValues(labelWidget, args, 1);
-}
-
-/*
- * Many programs get TIFF colormaps wrong. They use 8-bit colormaps instead of
- * 16-bit colormaps. This function is a heuristic to detect and correct this.
- */
-void
-CheckAndCorrectColormap()
-{
- register int i;
-
- for (i = 0; i < colormapSize; i++)
- if ((redMap[i] > 255) || (greenMap[i] > 255) || (blueMap[i] > 255))
- return;
-
- for (i = 0; i < colormapSize; i++) {
- redMap[i] = SCALE(redMap[i], 255);
- greenMap[i] = SCALE(greenMap[i], 255);
- blueMap[i] = SCALE(blueMap[i], 255);
- }
- TIFFWarning(fileName, "Assuming 8-bit colormap");
-}
-
-void
-SimpleGammaCorrection()
-{
- register int i;
- register double i_gamma = 1.0 / appData.gamma;
-
- for (i = 0; i < colormapSize; i++) {
- if (((tfPhotometricInterpretation == PHOTOMETRIC_MINISWHITE)
- && (i == colormapSize - 1))
- || ((tfPhotometricInterpretation == PHOTOMETRIC_MINISBLACK)
- && (i == 0)))
- redMap[i] = greenMap[i] = blueMap[i] = 0;
- else {
- redMap[i] = ROUND((pow(dRed[i] / 65535.0, i_gamma) * 65535.0));
- greenMap[i] = ROUND((pow(dGreen[i] / 65535.0, i_gamma) * 65535.0));
- blueMap[i] = ROUND((pow(dBlue[i] / 65535.0, i_gamma) * 65535.0));
- }
- }
-
- free(dRed); free(dGreen); free(dBlue);
-}
-
-static char* classNames[] = {
- "StaticGray",
- "GrayScale",
- "StaticColor",
- "PseudoColor",
- "TrueColor",
- "DirectColor"
-};
-
-/*
- * Current limitation: the visual is set initially by the first file.
- * It cannot be changed.
- */
-void
-GetVisual()
-{
- XColor *colors = NULL;
- unsigned long *pixels = NULL;
- unsigned long i;
-
- switch (tfImageDepth) {
- /*
- * X really wants a 32-bit image with the fourth channel unused,
- * but the visual structure thinks it's 24-bit. bitmap_unit is 32.
- */
- case 32:
- case 24:
- if (SearchVisualList(24, DirectColor, &xVisual) == False) {
- fprintf(stderr, "xtiff: 24-bit DirectColor visual not available\n");
- exit(0);
- }
-
- colors = (XColor *) malloc(3 * colormapSize * sizeof(XColor));
- MCHECK(colors);
-
- for (i = 0; i < colormapSize; i++) {
- colors[i].pixel = (i << 16) + (i << 8) + i;
- colors[i].red = redMap[i];
- colors[i].green = greenMap[i];
- colors[i].blue = blueMap[i];
- colors[i].flags = DoRed | DoGreen | DoBlue;
- }
-
- xColormap = XCreateColormap(xDisplay, RootWindow(xDisplay, xScreen),
- xVisual, AllocAll);
- XStoreColors(xDisplay, xColormap, colors, colormapSize);
- break;
- case 8:
- case 4:
- case 2:
- /*
- * We assume that systems with 24-bit visuals also have 8-bit visuals.
- * We don't promote from 8-bit PseudoColor to 24/32 bit DirectColor.
- */
- switch (tfPhotometricInterpretation) {
- case PHOTOMETRIC_MINISWHITE:
- case PHOTOMETRIC_MINISBLACK:
- if (SearchVisualList((int) tfImageDepth, GrayScale, &xVisual) == True)
- break;
- case PHOTOMETRIC_PALETTE:
- if (SearchVisualList((int) tfImageDepth, PseudoColor, &xVisual) == True)
- break;
- default:
- fprintf(stderr, "xtiff: Unsupported TIFF/X configuration\n");
- exit(0);
- }
-
- colors = (XColor *) malloc(colormapSize * sizeof(XColor));
- MCHECK(colors);
-
- for (i = 0; i < colormapSize; i++) {
- colors[i].pixel = i;
- colors[i].red = redMap[i];
- colors[i].green = greenMap[i];
- colors[i].blue = blueMap[i];
- colors[i].flags = DoRed | DoGreen | DoBlue;
- }
-
- /*
- * xtiff's colormap allocation is private. It does not attempt
- * to detect whether any existing colormap entries are suitable
- * for its use. This will cause colormap flashing. Furthermore,
- * background and foreground are taken from the environment.
- * For example, the foreground color may be red when the visual
- * is GrayScale. If the colormap is completely populated,
- * Xt will not be able to allocate fg and bg.
- */
- if (tfImageDepth == 8)
- xColormap = XCreateColormap(xDisplay, RootWindow(xDisplay, xScreen),
- xVisual, AllocAll);
- else {
- xColormap = XCreateColormap(xDisplay, RootWindow(xDisplay, xScreen),
- xVisual, AllocNone);
- pixels = (unsigned long *)
- malloc(colormapSize * sizeof(unsigned long));
- MCHECK(pixels);
- (void) XAllocColorCells(xDisplay, xColormap, True,
- NULL, 0, pixels, colormapSize);
- basePixel = (unsigned char) pixels[0];
- free(pixels);
- }
- XStoreColors(xDisplay, xColormap, colors, colormapSize);
- break;
- case 1:
- xImageDepth = 1;
- xVisual = DefaultVisual(xDisplay, xScreen);
- xColormap = DefaultColormap(xDisplay, xScreen);
- break;
- default:
- fprintf(stderr, "xtiff: unsupported image depth %d\n", tfImageDepth);
- exit(0);
- }
-
- if (appData.verbose == True)
- fprintf(stderr, "%s: Using %d-bit %s visual.\n",
- fileName, xImageDepth, classNames[xVisual->class]);
-
- if (colors != NULL)
- free(colors);
- if (grayMap != NULL)
- free(grayMap);
- if (redMap != NULL)
- free(redMap);
- if (greenMap != NULL)
- free(greenMap);
- if (blueMap != NULL)
- free(blueMap);
-
- colors = NULL; grayMap = redMap = greenMap = blueMap = NULL;
-}
-
-/*
- * Search for an appropriate visual. Promote where necessary.
- * Check to make sure that ENOUGH colormap entries are writeable.
- * basePixel was determined when XAllocColorCells() contiguously
- * allocated enough entries. basePixel is used below in GetTIFFImage.
- */
-Boolean
-SearchVisualList(image_depth, visual_class, visual)
- int image_depth, visual_class;
- Visual **visual;
-{
- XVisualInfo template_visual, *visual_list, *vl;
- int i, n_visuals;
-
- template_visual.screen = xScreen;
- vl = visual_list = XGetVisualInfo(xDisplay, VisualScreenMask,
- &template_visual, &n_visuals);
-
- if (n_visuals == 0) {
- fprintf(stderr, "xtiff: visual list not available\n");
- exit(0);
- }
-
- for (i = 0; i < n_visuals; vl++, i++) {
- if ((vl->class == visual_class) && (vl->depth >= image_depth)
- && (vl->visual->map_entries >= (1 << vl->depth))) {
- *visual = vl->visual;
- xImageDepth = vl->depth;
- xRedMask = vl->red_mask;
- xGreenMask = vl->green_mask;
- xBlueMask = vl->blue_mask;
- XFree((char *) visual_list);
- return True;
- }
- }
-
- XFree((char *) visual_list);
- return False;
-}
-
-void
-GetTIFFImage()
-{
- int pixel_map[3], red_shift, green_shift, blue_shift;
- char *scan_line, *output_p, *input_p;
- uint32 i, j;
- uint16 s;
-
- scan_line = (char *) malloc(tfBytesPerRow = TIFFScanlineSize(tfFile));
- MCHECK(scan_line);
-
- if ((tfImageDepth == 32) || (tfImageDepth == 24)) {
- output_p = imageMemory = (char *)
- malloc(tfImageWidth * tfImageHeight * 4);
- MCHECK(imageMemory);
-
- /*
- * Handle different color masks for different frame buffers.
- */
- if (ImageByteOrder(xDisplay) == LSBFirst) { /* DECstation 5000 */
- red_shift = pixel_map[0] = xRedMask == 0xFF000000 ? 3
- : (xRedMask == 0xFF0000 ? 2 : (xRedMask == 0xFF00 ? 1 : 0));
- green_shift = pixel_map[1] = xGreenMask == 0xFF000000 ? 3
- : (xGreenMask == 0xFF0000 ? 2 : (xGreenMask == 0xFF00 ? 1 : 0));
- blue_shift = pixel_map[2] = xBlueMask == 0xFF000000 ? 3
- : (xBlueMask == 0xFF0000 ? 2 : (xBlueMask == 0xFF00 ? 1 : 0));
- } else { /* Ardent */
- red_shift = pixel_map[0] = xRedMask == 0xFF000000 ? 0
- : (xRedMask == 0xFF0000 ? 1 : (xRedMask == 0xFF00 ? 2 : 3));
- green_shift = pixel_map[0] = xGreenMask == 0xFF000000 ? 0
- : (xGreenMask == 0xFF0000 ? 1 : (xGreenMask == 0xFF00 ? 2 : 3));
- blue_shift = pixel_map[0] = xBlueMask == 0xFF000000 ? 0
- : (xBlueMask == 0xFF0000 ? 1 : (xBlueMask == 0xFF00 ? 2 : 3));
- }
-
- if (tfPlanarConfiguration == PLANARCONFIG_CONTIG) {
- for (i = 0; i < tfImageHeight; i++) {
- if (TIFFReadScanline(tfFile, scan_line, i, 0) < 0)
- break;
- for (input_p = scan_line, j = 0; j < tfImageWidth; j++) {
- *(output_p + red_shift) = *input_p++;
- *(output_p + green_shift) = *input_p++;
- *(output_p + blue_shift) = *input_p++;
- output_p += 4;
- if (tfSamplesPerPixel == 4) /* skip the fourth channel */
- input_p++;
- }
- }
- } else {
- for (s = 0; s < tfSamplesPerPixel; s++) {
- if (s == 3) /* skip the fourth channel */
- continue;
- for (i = 0; i < tfImageHeight; i++) {
- if (TIFFReadScanline(tfFile, scan_line, i, s) < 0)
- break;
- input_p = scan_line;
- output_p = imageMemory + (i*tfImageWidth*4) + pixel_map[s];
- for (j = 0; j < tfImageWidth; j++, output_p += 4)
- *output_p = *input_p++;
- }
- }
- }
- } else {
- if (xImageDepth == tfImageDepth) {
- output_p = imageMemory = (char *)
- malloc(tfBytesPerRow * tfImageHeight);
- MCHECK(imageMemory);
-
- for (i = 0; i < tfImageHeight; i++, output_p += tfBytesPerRow)
- if (TIFFReadScanline(tfFile, output_p, i, 0) < 0)
- break;
- } else if ((xImageDepth == 8) && (tfImageDepth == 4)) {
- output_p = imageMemory = (char *)
- malloc(tfBytesPerRow * 2 * tfImageHeight + 2);
- MCHECK(imageMemory);
-
- /*
- * If a scanline is of odd size the inner loop below will overshoot.
- * This is handled very simply by recalculating the start point at
- * each scanline and padding imageMemory a little at the end.
- */
- for (i = 0; i < tfImageHeight; i++) {
- if (TIFFReadScanline(tfFile, scan_line, i, 0) < 0)
- break;
- output_p = &imageMemory[i * tfImageWidth];
- input_p = scan_line;
- for (j = 0; j < tfImageWidth; j += 2, input_p++) {
- *output_p++ = (*input_p >> 4) + basePixel;
- *output_p++ = (*input_p & 0xf) + basePixel;
- }
- }
- } else if ((xImageDepth == 8) && (tfImageDepth == 2)) {
- output_p = imageMemory = (char *)
- malloc(tfBytesPerRow * 4 * tfImageHeight + 4);
- MCHECK(imageMemory);
-
- for (i = 0; i < tfImageHeight; i++) {
- if (TIFFReadScanline(tfFile, scan_line, i, 0) < 0)
- break;
- output_p = &imageMemory[i * tfImageWidth];
- input_p = scan_line;
- for (j = 0; j < tfImageWidth; j += 4, input_p++) {
- *output_p++ = (*input_p >> 6) + basePixel;
- *output_p++ = ((*input_p >> 4) & 3) + basePixel;
- *output_p++ = ((*input_p >> 2) & 3) + basePixel;
- *output_p++ = (*input_p & 3) + basePixel;
- }
- }
- } else if ((xImageDepth == 4) && (tfImageDepth == 2)) {
- output_p = imageMemory = (char *)
- malloc(tfBytesPerRow * 2 * tfImageHeight + 2);
- MCHECK(imageMemory);
-
- for (i = 0; i < tfImageHeight; i++) {
- if (TIFFReadScanline(tfFile, scan_line, i, 0) < 0)
- break;
- output_p = &imageMemory[i * tfBytesPerRow * 2];
- input_p = scan_line;
- for (j = 0; j < tfImageWidth; j += 4, input_p++) {
- *output_p++ = (((*input_p>>6) << 4)
- | ((*input_p >> 4) & 3)) + basePixel;
- *output_p++ = ((((*input_p>>2) & 3) << 4)
- | (*input_p & 3)) + basePixel;
- }
- }
- } else {
- fprintf(stderr,
- "xtiff: can't handle %d-bit TIFF file on an %d-bit display\n",
- tfImageDepth, xImageDepth);
- exit(0);
- }
- }
-
- free(scan_line);
-}
-
-void
-CreateXImage()
-{
- XGCValues gc_values;
- GC bitmap_gc;
-
- xOffset = yOffset = 0;
- grabX = grabY = -1;
-
- xImage = XCreateImage(xDisplay, xVisual, xImageDepth,
- xImageDepth == 1 ? XYBitmap : ZPixmap, /* offset */ 0,
- (char *) imageMemory, tfImageWidth, tfImageHeight,
- /* bitmap_pad */ 8, /* bytes_per_line */ 0);
-
- /*
- * libtiff converts LSB data into MSB but doesn't change the FillOrder tag.
- */
- if (xImageDepth == 1)
- xImage->bitmap_bit_order = MSBFirst;
- if (xImageDepth <= 8)
- xImage->byte_order = MSBFirst;
-
- /*
- * create an appropriate GC
- */
- gc_values.function = GXcopy;
- gc_values.plane_mask = AllPlanes;
- if (tfPhotometricInterpretation == PHOTOMETRIC_MINISBLACK) {
- gc_values.foreground = XWhitePixel(xDisplay, xScreen);
- gc_values.background = XBlackPixel(xDisplay, xScreen);
- } else {
- gc_values.foreground = XBlackPixel(xDisplay, xScreen);
- gc_values.background = XWhitePixel(xDisplay, xScreen);
- }
- xWinGc = XCreateGC(xDisplay, XtWindow(shellWidget),
- GCFunction | GCPlaneMask | GCForeground | GCBackground, &gc_values);
-
- /*
- * create the pixmap and load the image
- */
- if (appData.usePixmap == True) {
- xImagePixmap = XCreatePixmap(xDisplay, RootWindow(xDisplay, xScreen),
- xImage->width, xImage->height, xImageDepth);
-
- /*
- * According to the O'Reilly X Protocol Reference Manual, page 53,
- * "A pixmap depth of one is always supported and listed, but windows
- * of depth one might not be supported." Therefore we create a pixmap
- * of depth one and use XCopyPlane(). This is idiomatic.
- */
- if (xImageDepth == 1) { /* just pass the bits through */
- gc_values.foreground = 1; /* foreground describes set bits */
- gc_values.background = 0; /* background describes clear bits */
- bitmap_gc = XCreateGC(xDisplay, xImagePixmap,
- GCForeground | GCBackground, &gc_values);
- XPutImage(xDisplay, xImagePixmap, bitmap_gc, xImage,
- 0, 0, 0, 0, xImage->width, xImage->height);
- } else
- XPutImage(xDisplay, xImagePixmap, xWinGc, xImage,
- 0, 0, 0, 0, xImage->width, xImage->height);
- XDestroyImage(xImage);
- free(imageMemory);
- }
-}
-
-XtCallbackProc
-SelectProc(w, unused_1, unused_2)
- Widget w;
- caddr_t unused_1;
- caddr_t unused_2;
-{
- XawListReturnStruct *list_return;
-
- list_return = XawListShowCurrent(w);
-
- switch (list_return->list_index) {
- case ButtonQuit:
- QuitProc();
- break;
- case ButtonPreviousPage:
- PreviousProc();
- break;
- case ButtonNextPage:
- NextProc();
- break;
- default:
- fprintf(stderr, "error in SelectProc\n");
- exit(0);
- }
- XawListUnhighlight(w);
-}
-
-void
-QuitProc(void)
-{
- exit(0);
-}
-
-void
-NextProc()
-{
- PageProc(ButtonNextPage);
-}
-
-void
-PreviousProc()
-{
- PageProc(ButtonPreviousPage);
-}
-
-void
-PageProc(direction)
- int direction;
-{
- XEvent fake_event;
- Arg args[4];
-
- switch (direction) {
- case ButtonPreviousPage:
- if (tfDirectory > 0)
- TIFFSetDirectory(tfFile, --tfDirectory);
- else
- return;
- break;
- case ButtonNextPage:
- if (TIFFReadDirectory(tfFile) == True)
- tfDirectory++;
- else
- return;
- break;
- default:
- fprintf(stderr, "error in PageProc\n");
- exit(0);
- }
-
- xOffset = yOffset = 0;
- grabX = grabY = -1;
-
- GetTIFFHeader();
- SetNameLabel();
- GetTIFFImage();
-
- if (appData.usePixmap == True)
- XFreePixmap(xDisplay, xImagePixmap);
- else
- XDestroyImage(xImage);
-
- CreateXImage();
-
- /*
- * Using XtSetValues() to set the widget size causes a resize.
- * This resize gets propagated up to the parent shell.
- * In order to disable this visually disconcerting effect,
- * shell resizing is temporarily disabled.
- */
- XtSetArg(args[0], XtNallowShellResize, False);
- XtSetValues(shellWidget, args, 1);
-
- XtSetArg(args[0], XtNwidth, tfImageWidth);
- XtSetArg(args[1], XtNheight, tfImageHeight);
- XtSetValues(imageWidget, args, 2);
-
- XtSetArg(args[0], XtNallowShellResize, True);
- XtSetValues(shellWidget, args, 1);
-
- XClearWindow(xDisplay, XtWindow(imageWidget));
-
- fake_event.type = Expose;
- fake_event.xexpose.x = fake_event.xexpose.y = 0;
- fake_event.xexpose.width = tfImageWidth; /* the window will clip */
- fake_event.xexpose.height = tfImageHeight;
- EventProc(imageWidget, NULL, &fake_event);
-}
-
-void
-EventProc(widget, unused, event)
- Widget widget;
- caddr_t unused;
- XEvent *event;
-{
- int ih, iw, ww, wh, sx, sy, w, h, dx, dy;
- Dimension w_width, w_height;
- XEvent next_event;
- Arg args[2];
-
- if (event->type == MappingNotify) {
- XRefreshKeyboardMapping((XMappingEvent *) event);
- return;
- }
-
- if (!XtIsRealized(widget))
- return;
-
- if ((event->type == ButtonPress) || (event->type == ButtonRelease))
- if (event->xbutton.button != Button1)
- return;
-
- iw = tfImageWidth; /* avoid sign problems */
- ih = tfImageHeight;
-
- /*
- * The grabX and grabY variables record where the user grabbed the image.
- * They also record whether the mouse button is down or not.
- */
- if (event->type == ButtonPress) {
- grabX = event->xbutton.x;
- grabY = event->xbutton.y;
- return;
- }
-
- /*
- * imageWidget is a Core widget and doesn't get resized.
- * So we calculate the size of its viewport here.
- */
- XtSetArg(args[0], XtNwidth, &w_width);
- XtSetArg(args[1], XtNheight, &w_height);
- XtGetValues(shellWidget, args, 2);
- ww = w_width;
- wh = w_height;
- XtGetValues(listWidget, args, 2);
- wh -= w_height;
-
- switch (event->type) {
- case Expose:
- dx = event->xexpose.x;
- dy = event->xexpose.y;
- sx = dx + xOffset;
- sy = dy + yOffset;
- w = MIN(event->xexpose.width, iw);
- h = MIN(event->xexpose.height, ih);
- break;
- case KeyPress:
- if ((grabX >= 0) || (grabY >= 0)) /* Mouse button is still down */
- return;
- switch (XLookupKeysym((XKeyEvent *) event, /* KeySyms index */ 0)) {
- case XK_Up:
- if (ih < wh) /* Don't scroll if the window fits the image. */
- return;
- sy = yOffset + appData.translate;
- sy = MIN(ih - wh, sy);
- if (sy == yOffset) /* Filter redundant stationary refreshes. */
- return;
- yOffset = sy;
- sx = xOffset;
- dx = dy = 0;
- w = ww; h = wh;
- break;
- case XK_Down:
- if (ih < wh)
- return;
- sy = yOffset - appData.translate;
- sy = MAX(sy, 0);
- if (sy == yOffset)
- return;
- yOffset = sy;
- sx = xOffset;
- dx = dy = 0;
- w = ww; h = wh;
- break;
- case XK_Left:
- if (iw < ww)
- return;
- sx = xOffset + appData.translate;
- sx = MIN(iw - ww, sx);
- if (sx == xOffset)
- return;
- xOffset = sx;
- sy = yOffset;
- dx = dy = 0;
- w = ww; h = wh;
- break;
- case XK_Right:
- if (iw < ww)
- return;
- sx = xOffset - appData.translate;
- sx = MAX(sx, 0);
- if (sx == xOffset)
- return;
- xOffset = sx;
- sy = yOffset;
- dx = dy = 0;
- w = ww; h = wh;
- break;
- default:
- return;
- }
- break;
- case MotionNotify:
- /*
- * MotionEvent compression. Ignore multiple motion events.
- * Ignore motion events if the mouse button is up.
- */
- if (XPending(xDisplay)) /* Xlib doesn't flush the output buffer */
- if (XtPeekEvent(&next_event))
- if (next_event.type == MotionNotify)
- return;
- if ((grabX < 0) || (grabY < 0))
- return;
- sx = xOffset + grabX - (int) event->xmotion.x;
- if (sx >= (iw - ww)) /* clamp x motion but allow y motion */
- sx = iw - ww;
- sx = MAX(sx, 0);
- sy = yOffset + grabY - (int) event->xmotion.y;
- if (sy >= (ih - wh)) /* clamp y motion but allow x motion */
- sy = ih - wh;
- sy = MAX(sy, 0);
- if ((sx == xOffset) && (sy == yOffset))
- return;
- dx = dy = 0;
- w = ww; h = wh;
- break;
- case ButtonRelease:
- xOffset = xOffset + grabX - (int) event->xbutton.x;
- xOffset = MIN(iw - ww, xOffset);
- xOffset = MAX(xOffset, 0);
- yOffset = yOffset + grabY - (int) event->xbutton.y;
- yOffset = MIN(ih - wh, yOffset);
- yOffset = MAX(yOffset, 0);
- grabX = grabY = -1;
- default:
- return;
- }
-
- if (appData.usePixmap == True) {
- if (xImageDepth == 1)
- XCopyPlane(xDisplay, xImagePixmap, XtWindow(widget),
- xWinGc, sx, sy, w, h, dx, dy, 1);
- else
- XCopyArea(xDisplay, xImagePixmap, XtWindow(widget),
- xWinGc, sx, sy, w, h, dx, dy);
- } else
- XPutImage(xDisplay, XtWindow(widget), xWinGc, xImage,
- sx, sy, dx, dy, w, h);
-}
-
-void
-ResizeProc()
-{
- Dimension w_width, w_height;
- int xo, yo, ww, wh;
- XEvent fake_event;
- Arg args[2];
-
- if ((xOffset == 0) && (yOffset == 0))
- return;
-
- XtSetArg(args[0], XtNwidth, &w_width);
- XtSetArg(args[1], XtNheight, &w_height);
- XtGetValues(shellWidget, args, 2);
- ww = w_width;
- wh = w_height;
- XtGetValues(listWidget, args, 2);
- wh -= w_height;
-
- xo = xOffset; yo = yOffset;
-
- if ((xOffset + ww) >= tfImageWidth)
- xOffset = MAX((int) tfImageWidth - ww, 0);
- if ((yOffset + wh) >= tfImageHeight)
- yOffset = MAX((int) tfImageHeight - wh, 0);
-
- /*
- * Send an ExposeEvent if the origin changed.
- * We have to do this because of the use and semantics of bit gravity.
- */
- if ((xo != xOffset) || (yo != yOffset)) {
- fake_event.type = Expose;
- fake_event.xexpose.x = fake_event.xexpose.y = 0;
- fake_event.xexpose.width = tfImageWidth;
- fake_event.xexpose.height = tfImageHeight;
- EventProc(imageWidget, NULL, &fake_event);
- }
-}
-
-int
-XTiffErrorHandler(display, error_event)
- Display *display;
- XErrorEvent *error_event;
-{
- char message[80];
-
- /*
- * Some X servers limit the size of pixmaps.
- */
- if ((error_event->error_code == BadAlloc)
- && (error_event->request_code == X_CreatePixmap))
- fprintf(stderr, "xtiff: requested pixmap too big for display\n");
- else {
- XGetErrorText(display, error_event->error_code, message, 80);
- fprintf(stderr, "xtiff: error code %s\n", message);
- }
-
- exit(0);
-}
-
-void
-Usage()
-{
- fprintf(stderr, "Usage xtiff: [options] tiff-file\n");
- fprintf(stderr, "\tstandard Xt options\n");
- fprintf(stderr, "\t[-help]\n");
- fprintf(stderr, "\t[-gamma gamma]\n");
- fprintf(stderr, "\t[-usePixmap (True | False)]\n");
- fprintf(stderr, "\t[-viewportWidth pixels]\n");
- fprintf(stderr, "\t[-viewportHeight pixels]\n");
- fprintf(stderr, "\t[-translate pixels]\n");
- fprintf(stderr, "\t[-verbose (True | False)]\n");
- exit(0);
-}
-
-/* vim: set ts=8 sts=8 sw=8 noet: */
-
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 8
- * fill-column: 78
- * End:
- */
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 20:21:45 +0000