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- /*
- * Raster graphics library
- *
- * Copyright (c) 1997-2000 Alfredo K. Kojima
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #include <config.h>
-
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
- #include <X11/Xlib.h>
-
- #include "wraster.h"
-
-
- void
- RBevelImage(RImage *image, int bevel_type)
- {
- RColor color;
- RColor cdelta;
- int w, h;
-
- if (image->width<3 || image->height<3)
- return;
-
- w = image->width;
- h = image->height;
- if (bevel_type>0) { /* raised */
- /* top */
- cdelta.alpha = 0;
- cdelta.red = cdelta.green = cdelta.blue = 80;
- ROperateLine(image, RAddOperation, 0, 0, w-1, 0, &cdelta);
- if (bevel_type==RBEV_RAISED3 && w>3)
- ROperateLine(image, RAddOperation, 1, 1, w-3, 1,&cdelta);
-
- /* left */
- ROperateLine(image, RAddOperation, 0, 1, 0, h-1, &cdelta);
- if (bevel_type==RBEV_RAISED3 && h>3)
- ROperateLine(image, RAddOperation, 1, 2, 1, h-3, &cdelta);
-
- /* bottom */
- color.alpha = 255;
- color.red = color.green = color.blue = 0;
- cdelta.red = cdelta.green = cdelta.blue = 40;
- if (bevel_type==RBEV_RAISED2 || bevel_type==RBEV_RAISED3) {
- ROperateLine(image, RSubtractOperation, 0, h-2, w-3,
- h-2, &cdelta);
- RDrawLine(image, 0, h-1, w-1, h-1, &color);
- } else {
- ROperateLine(image, RSubtractOperation, 0, h-1, w-1, h-1,
- &cdelta);
- }
-
- /* right */
- if (bevel_type==RBEV_RAISED2 || bevel_type==RBEV_RAISED3) {
- ROperateLine(image, RSubtractOperation, w-2, 0, w-2, h-2,
- &cdelta);
- RDrawLine(image, w-1, 0, w-1, h-2, &color);
- } else {
- ROperateLine(image, RSubtractOperation, w-1, 0, w-1, h-2,
- &cdelta);
- }
- } else { /* sunken */
- cdelta.alpha = 0;
- cdelta.red = cdelta.green = cdelta.blue = 40;
- ROperateLine(image, RSubtractOperation, 0, 0, w-1, 0,
- &cdelta); /* top */
- ROperateLine(image, RSubtractOperation, 0, 1, 0, h-1,
- &cdelta); /* left */
- cdelta.red = cdelta.green = cdelta.blue = 80;
- ROperateLine(image, RAddOperation, 0, h-1, w-1, h-1, &cdelta); /* bottom */
- ROperateLine(image, RAddOperation, w-1, 0, w-1, h-2, &cdelta); /* right */
- }
- }
-
-
- void
- RFillImage(RImage *image, RColor *color)
- {
- if (image->format == RRGBAFormat) {
- unsigned char *d = image->data;
- int i;
-
- for (i = 0; i < image->width; i++) {
- *d++ = color->red;
- *d++ = color->green;
- *d++ = color->blue;
- *d++ = color->alpha;
- }
- for (i = 1; i < image->height; i++, d += image->width*4) {
- memcpy(d, image->data, image->width*4);
- }
- } else {
- unsigned char *d = image->data;
- int i;
-
- for (i = 0; i < image->width; i++) {
- *d++ = color->red;
- *d++ = color->green;
- *d++ = color->blue;
- }
- for (i = 1; i < image->height; i++, d += image->width*3) {
- memcpy(d, image->data, image->width*3);
- }
- }
- }
-
-
- void
- RClearImage(RImage *image, RColor *color)
- {
- if (color->alpha==255) {
- if (image->format == RRGBAFormat) {
- unsigned char *d = image->data;
- int i;
-
- for (i = 0; i < image->width; i++) {
- *d++ = color->red;
- *d++ = color->green;
- *d++ = color->blue;
- *d++ = 0xff;
- }
- for (i = 1; i < image->height; i++, d += image->width*4) {
- memcpy(d, image->data, image->width*4);
- }
- } else {
- unsigned char *d = image->data;
- int i;
-
- for (i = 0; i < image->width; i++) {
- *d++ = color->red;
- *d++ = color->green;
- *d++ = color->blue;
- }
- for (i = 1; i < image->height; i++, d += image->width*3) {
- memcpy(d, image->data, image->width*3);
- }
- }
- } else {
- int bytes = image->width*image->height;
- int i;
- unsigned char *d;
- int alpha, nalpha, r, g, b;
-
- d = image->data;
-
- alpha = color->alpha;
- r = color->red * alpha;
- g = color->green * alpha;
- b = color->blue * alpha;
- nalpha = 255 - alpha;
-
- for (i=0; i<bytes; i++) {
- *d = (((int)*d * nalpha) + r)/256;
- d++;
- *d = (((int)*d * nalpha) + g)/256;
- d++;
- *d = (((int)*d * nalpha) + b)/256;
- d++;
- if (image->format == RRGBAFormat) {
- d++;
- }
- }
- }
- }
-
- const char*
- RMessageForError(int errorCode)
- {
- switch (errorCode) {
- case RERR_NONE:
- return "no error";
-
- case RERR_OPEN:
- return "could not open file";
-
- case RERR_READ:
- return "error reading from file";
-
- case RERR_WRITE:
- return "error writing to file";
-
- case RERR_NOMEMORY:
- return "out of memory";
-
- case RERR_NOCOLOR:
- return "out of color cells";
-
- case RERR_BADIMAGEFILE:
- return "invalid or corrupted image file";
-
- case RERR_BADFORMAT:
- return "the image format in the file is not supported and can't be loaded";
-
- case RERR_BADINDEX:
- return "image file does not contain requested image index";
-
- case RERR_BADVISUALID:
- return "request for an invalid visual ID";
-
- case RERR_STDCMAPFAIL:
- return "failed to create standard colormap";
-
- case RERR_XERROR:
- return "internal X error";
-
- default:
- case RERR_INTERNAL:
- return "internal error";
- }
- }
-