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+/* $Xorg: Graphics.c,v 1.4 2001/02/09 02:05:28 xorgcvs Exp $ */
+/*
+
+Copyright 1989, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+/*
+ * Author: Davor Matic, MIT X Consortium
+ */
+
+#include <X11/IntrinsicP.h>
+#include <X11/StringDefs.h>
+#include <X11/Xfuncs.h>
+#include "BitmapP.h"
+
+#include <stdio.h>
+#include <math.h>
+
+#ifndef abs
+#define abs(x) (((x) > 0) ? (x) : -(x))
+#endif
+#define min(x, y) (((int)(x) < (int)(y)) ? (x) : (y))
+#define max(x, y) (((int)(x) > (int)(y)) ? (x) : (y))
+#ifndef rint
+#define rint(x) floor(x + 0.5)
+#endif
+
+/*****************************************************************************\
+ * Graphics *
+\*****************************************************************************/
+
+#define GetBit(image, x, y)\
+ ((bit)((*(image->data + (x) / 8 + (y) * image->bytes_per_line) &\
+ (1 << ((x) % 8))) ? 1 : 0))
+
+
+bit BWGetBit(w, x, y)
+ Widget w;
+ Position x, y;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ if (QueryInBitmap(BW, x, y))
+ return GetBit(BW->bitmap.image, x, y);
+ else
+ return NotSet;
+}
+
+
+#define InvertBit(image, x, y)\
+ (*(image->data + (x) / 8 + (y) * image->bytes_per_line) ^=\
+ (bit) (1 << ((x) % 8)))
+
+
+#define SetBit(image, x, y)\
+ (*(image->data + (x) / 8 + (y) * image->bytes_per_line) |=\
+ (bit) (1 << ((x) % 8)))
+
+#define ClearBit(image, x, y)\
+ (*(image->data + (x) / 8 + (y) * image->bytes_per_line) &=\
+ (bit)~(1 << ((x) % 8)))
+
+
+#define HighlightSquare(BW, x, y)\
+ XFillRectangle(XtDisplay(BW), XtWindow(BW),\
+ BW->bitmap.highlighting_gc,\
+ InWindowX(BW, x), InWindowY(BW, y),\
+ BW->bitmap.squareW, BW->bitmap.squareH)
+/*
+void HighlightSquare(BW, x, y)
+ BitmapWidget BW;
+ Position x, y;
+{
+ XFillRectangle(XtDisplay(BW), XtWindow(BW),
+ BW->bitmap.highlighting_gc,
+ InWindowX(BW, x), InWindowY(BW, y),
+ BW->bitmap.squareW, BW->bitmap.squareH);
+}
+*/
+
+#define DrawSquare(BW, x, y)\
+ XFillRectangle(XtDisplay(BW), XtWindow(BW),\
+ BW->bitmap.drawing_gc,\
+ InWindowX(BW, x), InWindowY(BW, y),\
+ BW->bitmap.squareW, BW->bitmap.squareH)
+
+/*
+void DrawSquare(BW, x, y)
+ BitmapWidget BW;
+ Position x, y;
+{
+ XFillRectangle(XtDisplay(BW), XtWindow(BW),
+ BW->bitmap.drawing_gc,
+ InWindowX(BW, x), InWindowY(BW, y),
+ BW->bitmap.squareW, BW->bitmap.squareH);
+}
+*/
+
+#define InvertPoint(BW, x, y)\
+ {InvertBit(BW->bitmap.image, x, y); DrawSquare(BW, x, y);}
+
+#define DrawPoint(BW, x, y, value)\
+ if (GetBit(BW->bitmap.image, x, y) != value)\
+ InvertPoint(BW, x, y)
+
+void BWDrawPoint(w, x, y, value)
+ Widget w;
+ Position x, y;
+ bit value;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ if (QueryInBitmap(BW, x, y)) {
+ if (value == Highlight)
+ HighlightSquare(BW, x, y);
+ else
+ DrawPoint(BW, x, y, value);
+ }
+}
+
+XPoint *HotSpotShape(BW, x ,y)
+ BitmapWidget BW;
+ Position x, y;
+{
+ static XPoint points[5];
+
+ points[0].x = InWindowX(BW, x);
+ points[0].y = InWindowY(BW, y + 1.0/2);
+ points[1].x = InWindowX(BW, x + 1.0/2);
+ points[1].y = InWindowY(BW, y + 1);
+ points[2].x = InWindowX(BW, x + 1);
+ points[2].y = InWindowY(BW, y + 1.0/2);
+ points[3].x = InWindowX(BW, x + 1.0/2);
+ points[3].y = InWindowY(BW, y);
+ points[4].x = InWindowX(BW, x);
+ points[4].y = InWindowY(BW, y + 1.0/2);
+
+ return points;
+}
+
+#define DrawHotSpot(BW, x, y)\
+ XFillPolygon(XtDisplay(BW), XtWindow(BW), BW->bitmap.drawing_gc,\
+ HotSpotShape(BW, x, y), 5, Convex, CoordModeOrigin)
+
+#define HighlightHotSpot(BW, x, y)\
+ XFillPolygon(XtDisplay(BW), XtWindow(BW), BW->bitmap.highlighting_gc,\
+ HotSpotShape(BW, x, y), 5, Convex, CoordModeOrigin)
+
+XImage *CreateBitmapImage();
+void DestroyBitmapImage();
+
+void BWRedrawHotSpot(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y))
+ DrawHotSpot(BW, BW->bitmap.hot.x, BW->bitmap.hot.y);
+}
+
+void BWClearHotSpot(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y)) {
+ DrawHotSpot(BW, BW->bitmap.hot.x, BW->bitmap.hot.y);
+ BW->bitmap.hot.x = BW->bitmap.hot.y = NotSet;
+ }
+}
+
+void BWDrawHotSpot(w, x, y, value)
+ Widget w;
+ Position x, y;
+ int value;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ if (QueryInBitmap(BW, x, y)) {
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y) &&
+ ((BW->bitmap.hot.x == x) && (BW->bitmap.hot.y == y))) {
+ if ((value == Clear) || (value == Invert)) {
+ BWClearHotSpot(w);
+ }
+ }
+ else
+ if ((value == Set) || (value == Invert)) {
+ BWClearHotSpot(w);
+ DrawHotSpot(BW, x, y);
+ BW->bitmap.hot.x = x;
+ BW->bitmap.hot.y = y;
+ }
+
+ if (value == Highlight)
+ HighlightHotSpot(BW, x, y);
+ }
+}
+
+void BWSetHotSpot(w, x, y)
+ Widget w;
+ Position x, y;
+{
+ if (QuerySet(x, y))
+ BWDrawHotSpot(w, x, y, Set);
+ else
+ BWClearHotSpot(w);
+}
+
+/* high level procedures */
+
+void BWRedrawSquares(w, x, y, width, height)
+ Widget w;
+ register Position x, y;
+ Dimension width, height;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ Position from_x = InBitmapX(BW, x);
+ Position from_y = InBitmapY(BW, y);
+ Position to_x = InBitmapX(BW, x + width);
+ Position to_y = InBitmapY(BW, y + height);
+
+ QuerySwap(from_x, to_x);
+ QuerySwap(from_y, to_y);
+ from_x = max(0, from_x);
+ from_y = max(0, from_y);
+ to_x = min(BW->bitmap.image->width - 1, to_x);
+ to_y = min(BW->bitmap.image->height - 1, to_y);
+
+ for (x = from_x; x <= to_x; x++)
+ for (y = from_y; y <= to_y; y++)
+ if (GetBit(BW->bitmap.image, x, y)) DrawSquare(BW, x, y);
+}
+
+void BWDrawGrid(w, from_x, from_y, to_x, to_y)
+ Widget w;
+ Position from_x, from_y,
+ to_x, to_y;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ int i;
+
+ QuerySwap(from_x, to_x);
+ QuerySwap(from_y, to_y);
+ from_x = max(0, from_x);
+ from_y = max(0, from_y);
+ to_x = min(BW->bitmap.image->width - 1, to_x);
+ to_y = min(BW->bitmap.image->height - 1, to_y);
+
+ for(i = from_x + (from_x == 0); i <= to_x; i++)
+ XDrawLine(XtDisplay(BW), XtWindow(BW),
+ BW->bitmap.frame_gc,
+ InWindowX(BW, i), InWindowY(BW, from_y),
+ InWindowX(BW, i), InWindowY(BW, to_y + 1));
+
+ for(i = from_y + (from_y == 0); i <= to_y; i++)
+ XDrawLine(XtDisplay(BW), XtWindow(BW),
+ BW->bitmap.frame_gc,
+ InWindowX(BW, from_x), InWindowY(BW, i),
+ InWindowX(BW, to_x + 1), InWindowY(BW, i));
+}
+
+
+void BWRedrawGrid(w, x, y, width, height)
+ Widget w;
+ Position x, y;
+ Dimension width, height;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ Position from_x = InBitmapX(BW, x);
+ Position from_y = InBitmapY(BW, y);
+ Position to_x = InBitmapX(BW, x + width);
+ Position to_y = InBitmapY(BW, y + height);
+
+ if (BW->bitmap.grid)
+ BWDrawGrid(w, from_x, from_y, to_x, to_y);
+}
+
+void BWDrawLine(w, from_x, from_y, to_x, to_y, value)
+ Widget w;
+ Position from_x, from_y,
+ to_x, to_y;
+ int value;
+{
+ Position i;
+ register double x, y;
+ double dx, dy, delta;
+
+ dx = to_x - from_x;
+ dy = to_y - from_y;
+ x = from_x + 0.5;
+ y = from_y + 0.5;
+ delta = max(abs(dx), abs(dy));
+ if (delta > 0) {
+ dx /= delta;
+ dy /= delta;
+ for(i = 0; i <= delta; i++) {
+ BWDrawPoint(w, (Position) x, (Position) y, value);
+ x += dx;
+ y += dy;
+ }
+ }
+ else
+ BWDrawPoint(w, from_x, from_y, value);
+}
+
+void BWBlindLine(w, from_x, from_y, to_x, to_y, value)
+ Widget w;
+ Position from_x, from_y,
+ to_x, to_y;
+ int value;
+{
+ Position i;
+ register double x, y;
+ double dx, dy, delta;
+
+ dx = to_x - from_x;
+ dy = to_y - from_y;
+ x = from_x + 0.5;
+ y = from_y + 0.5;
+ delta = max(abs(dx), abs(dy));
+ if (delta > 0) {
+ dx /= delta;
+ dy /= delta;
+ x += dx;
+ y += dy;
+ for(i = 1; i <= delta; i++) {
+ BWDrawPoint(w, (Position) x, (Position) y, value);
+ x += dx;
+ y += dy;
+ }
+ }
+ else
+ BWDrawPoint(w, from_x, from_y, value);
+}
+
+void BWDrawRectangle(w, from_x, from_y, to_x, to_y, value)
+ Widget w;
+ Position from_x, from_y,
+ to_x, to_y;
+ int value;
+{
+ register Position i;
+ Dimension delta, width, height;
+
+ QuerySwap(from_x, to_x);
+ QuerySwap(from_y, to_y);
+
+ width = to_x - from_x;
+ height = to_y - from_y;
+
+ delta = max(width, height);
+
+ if (!QueryZero(width, height)) {
+ for (i = 0; (int)i < (int)delta; i++) {
+ if ((int)i < (int)width) {
+ BWDrawPoint(w, from_x + i, from_y, value);
+ BWDrawPoint(w, to_x - i, to_y, value);
+ }
+ if ((int)i < (int)height) {
+ BWDrawPoint(w, from_x, to_y - i, value);
+ BWDrawPoint(w, to_x, from_y + i, value);
+ }
+ }
+ }
+ else
+ BWDrawLine(w,
+ from_x, from_y,
+ to_x, to_y, value);
+}
+
+void BWDrawFilledRectangle(w, from_x, from_y, to_x, to_y, value)
+ Widget w;
+ Position from_x, from_y,
+ to_x, to_y;
+ int value;
+{
+ register Position x, y;
+
+ QuerySwap(from_x, to_x);
+ QuerySwap(from_y, to_y);
+
+ for (x = from_x; x <= to_x; x++)
+ for (y = from_y; y <= to_y; y++)
+ BWDrawPoint(w, x, y, value);
+}
+
+void BWDrawCircle(w, origin_x, origin_y, point_x, point_y, value)
+ Widget w;
+ Position origin_x, origin_y,
+ point_x, point_y;
+ int value;
+{
+ register Position i, delta;
+ Dimension dx, dy, half;
+ double radius;
+
+ dx = abs(point_x - origin_x);
+ dy = abs(point_y - origin_y);
+ radius = sqrt((double) ((int)dx * (int)dx + (int)dy * (int)dy));
+ if (radius < 1.0) {
+ BWDrawPoint(w, origin_x, origin_y, value);
+ }
+ else {
+ BWDrawPoint(w, origin_x - (Position) floor(radius), origin_y, value);
+ BWDrawPoint(w, origin_x + (Position) floor(radius), origin_y, value);
+ BWDrawPoint(w, origin_x, origin_y - (Position) floor(radius), value);
+ BWDrawPoint(w, origin_x, origin_y + (Position) floor(radius), value);
+ }
+ half = radius / sqrt(2.0);
+ for(i = 1; (int)i <= (int)half; i++) {
+ delta = sqrt(radius * radius - i * i);
+ BWDrawPoint(w, origin_x - delta, origin_y - i, value);
+ BWDrawPoint(w, origin_x - delta, origin_y + i, value);
+ BWDrawPoint(w, origin_x + delta, origin_y - i, value);
+ BWDrawPoint(w, origin_x + delta, origin_y + i, value);
+ if (i != delta) {
+ BWDrawPoint(w, origin_x - i, origin_y - delta, value);
+ BWDrawPoint(w, origin_x - i, origin_y + delta, value);
+ BWDrawPoint(w, origin_x + i, origin_y - delta, value);
+ BWDrawPoint(w, origin_x + i, origin_y + delta, value);
+ }
+ }
+}
+
+void BWDrawFilledCircle(w, origin_x, origin_y, point_x, point_y, value)
+ Widget w;
+ Position origin_x, origin_y,
+ point_x, point_y;
+ int value;
+{
+ register Position i, j, delta;
+ Dimension dx, dy;
+ double radius;
+
+ dx = abs(point_x - origin_x);
+ dy = abs(point_y - origin_y);
+ radius = sqrt((double) ((int)dx * (int)dx + (int)dy * (int)dy));
+ for(j = origin_x - (Position) floor(radius);
+ j <= origin_x + (Position) floor(radius); j++)
+ BWDrawPoint(w, j, origin_y, value);
+ for(i = 1; i <= (Position) floor(radius); i++) {
+ delta = sqrt(radius * radius - i * i);
+ for(j = origin_x - delta; j <= origin_x + delta; j++) {
+ BWDrawPoint(w, j, origin_y - i, value);
+ BWDrawPoint(w, j, origin_y + i, value);
+ }
+ }
+}
+
+#define QueryFlood(BW, x, y, value)\
+ ((GetBit(BW->bitmap.image, x, y) !=\
+ (value & 1)) && QueryInBitmap(BW, x, y))
+
+#define Flood(BW, x, y, value)\
+ {if (value == Highlight) HighlightSquare(BW, x, y);\
+ else InvertPoint(BW, x, y);}
+
+/*
+void FloodLoop(BW, x, y, value)
+ BitmapWidget BW;
+ Position x, y;
+ int value;
+{
+ if (QueryFlood(BW, x, y, value)) {
+ Flood(BW, x, y, value);
+ FloodLoop(BW, x, y - 1, value);
+ FloodLoop(BW, x - 1, y, value);
+ FloodLoop(BW, x, y + 1, value);
+ FloodLoop(BW, x + 1, y, value);
+ }
+}
+*/
+
+void FloodLoop(BW, x, y, value)
+ BitmapWidget BW;
+ Position x, y;
+ int value;
+{
+ Position save_x, save_y, x_left, x_right;
+
+ if (QueryFlood(BW, x, y, value))
+ Flood(BW, x, y, value)
+
+
+ save_x = x;
+ save_y = y;
+
+ x++;
+ while (QueryFlood(BW, x, y, value)) {
+ Flood(BW, x, y, value);
+ x++;
+ }
+ x_right = --x;
+
+ x = save_x;
+ x--;
+ while (QueryFlood(BW, x, y, value)) {
+ Flood(BW, x, y, value);
+ x--;
+ }
+ x_left = ++x;
+
+
+ x = x_left;
+ y = save_y;
+ y++;
+
+ while (x <= x_right) {
+ Boolean flag = False;
+ Position x_enter;
+
+ while (QueryFlood(BW, x, y, value) && (x <= x_right)) {
+ flag = True;
+ x++;
+ }
+
+ if (flag) {
+ if ((x == x_right) && QueryFlood(BW, x, y, value))
+ FloodLoop(BW, x, y, value);
+ else
+ FloodLoop(BW, x - 1, y, value);
+ }
+
+ x_enter = x;
+
+ while (!QueryFlood(BW, x, y, value) && (x < x_right))
+ x++;
+
+ if (x == x_enter) x++;
+ }
+
+ x = x_left;
+ y = save_y;
+ y--;
+
+ while (x <= x_right) {
+ Boolean flag = False;
+ Position x_enter;
+
+ while (QueryFlood(BW, x, y, value) && (x <= x_right)) {
+ flag = True;
+ x++;
+ }
+
+ if (flag) {
+ if ((x == x_right) && QueryFlood(BW, x, y, value))
+ FloodLoop(BW, x, y, value);
+ else
+ FloodLoop(BW, x - 1, y, value);
+ }
+
+ x_enter = x;
+
+ while (!QueryFlood(BW, x, y, value) && (x < x_right))
+ x++;
+
+ if (x == x_enter) x++;
+ }
+}
+
+void BWFloodFill(w, x, y, value)
+ Widget w;
+ Position x, y;
+ int value;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ int pixel;
+
+ pixel = GetBit(BW->bitmap.image, x, y);
+
+ if (value == Invert)
+ FloodLoop(BW, x, y, (pixel ? Clear : Set));
+ else if (value != pixel)
+ FloodLoop(BW, x, y, value);
+}
+
+#define QueryHotInMark(BW)\
+ ((BW->bitmap.hot.x == max(BW->bitmap.mark.from_x,\
+ min(BW->bitmap.hot.x, BW->bitmap.mark.to_x)))\
+ &&\
+ (BW->bitmap.hot.y == max(BW->bitmap.mark.from_y,\
+ min(BW->bitmap.hot.y, BW->bitmap.mark.to_y))))
+
+void BWUp(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ register Position x, y;
+ bit first, up, down;
+ Position from_x, from_y, to_x, to_y;
+
+ if (BWQueryMarked(w)) {
+ from_x = BW->bitmap.mark.from_x;
+ from_y = BW->bitmap.mark.from_y;
+ to_x = BW->bitmap.mark.to_x;
+ to_y = BW->bitmap.mark.to_y;
+ }
+ else {
+ from_x = 0;
+ from_y = 0;
+ to_x = BW->bitmap.width - 1;
+ to_y = BW->bitmap.height - 1;
+ }
+
+ if ((to_y - from_y) == 0)
+ return;
+
+ for(x = from_x; x <= to_x; x++) {
+ first = up = GetBit(BW->bitmap.image, x, to_y);
+ for(y = to_y - 1; y >= from_y; y--) {
+ down = GetBit(BW->bitmap.image, x, y);
+ if (up != down)
+ InvertPoint(BW, x, y);
+ up =down;
+ }
+ if(first != down)
+ InvertPoint(BW, x, to_y);
+ }
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y)
+ &&
+ !BWQueryMarked(w))
+ BWSetHotSpot(w,
+ BW->bitmap.hot.x,
+ (BW->bitmap.hot.y - 1 + BW->bitmap.image->height) %
+ BW->bitmap.image->height);
+
+}
+
+void BWDown(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ register Position x, y;
+ bit first, down, up;
+ Position from_x, from_y, to_x, to_y;
+
+ if (BWQueryMarked(w)) {
+ from_x = BW->bitmap.mark.from_x;
+ from_y = BW->bitmap.mark.from_y;
+ to_x = BW->bitmap.mark.to_x;
+ to_y = BW->bitmap.mark.to_y;
+ }
+ else {
+ from_x = 0;
+ from_y = 0;
+ to_x = BW->bitmap.width - 1;
+ to_y = BW->bitmap.height - 1;
+ }
+
+ if ((to_y - from_y) == 0)
+ return;
+
+ for(x = from_x; x <= to_x; x++) {
+ first = down = GetBit(BW->bitmap.image, x, from_y);
+ for(y = from_y + 1; y <= to_y; y++) {
+ up = GetBit(BW->bitmap.image, x, y);
+ if (down != up)
+ InvertPoint(BW, x, y);
+ down = up;
+ }
+ if(first != up)
+ InvertPoint(BW, x, from_y);
+ }
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y)
+ &&
+ !BWQueryMarked(w))
+ BWSetHotSpot(w,
+ BW->bitmap.hot.x,
+ (BW->bitmap.hot.y + 1) % BW->bitmap.image->height);
+}
+
+void BWLeft(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ register Position x, y;
+ bit first, left, right;
+ Position from_x, from_y, to_x, to_y;
+
+ if (BWQueryMarked(w)) {
+ from_x = BW->bitmap.mark.from_x;
+ from_y = BW->bitmap.mark.from_y;
+ to_x = BW->bitmap.mark.to_x;
+ to_y = BW->bitmap.mark.to_y;
+ }
+ else {
+ from_x = 0;
+ from_y = 0;
+ to_x = BW->bitmap.width - 1;
+ to_y = BW->bitmap.height - 1;
+ }
+
+ if ((to_x - from_x) == 0)
+ return;
+
+ for(y = from_y; y <= to_y; y++) {
+ first = left = GetBit(BW->bitmap.image, to_x, y);
+ for(x = to_x - 1; x >= from_x; x--) {
+ right = GetBit(BW->bitmap.image, x, y);
+ if (left != right)
+ InvertPoint(BW, x, y);
+ left = right;
+ }
+ if(first != right)
+ InvertPoint(BW, to_x, y);
+ }
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y)
+ &&
+ !BWQueryMarked(w))
+ BWSetHotSpot(w,
+ (BW->bitmap.hot.x - 1 + BW->bitmap.image->width) %
+ BW->bitmap.image->width,
+ BW->bitmap.hot.y);
+}
+
+void BWRight(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ register Position x, y;
+ bit first, right, left;
+ Position from_x, from_y, to_x, to_y;
+
+ if (BWQueryMarked(w)) {
+ from_x = BW->bitmap.mark.from_x;
+ from_y = BW->bitmap.mark.from_y;
+ to_x = BW->bitmap.mark.to_x;
+ to_y = BW->bitmap.mark.to_y;
+ }
+ else {
+ from_x = 0;
+ from_y = 0;
+ to_x = BW->bitmap.width - 1;
+ to_y = BW->bitmap.height - 1;
+ }
+
+ if ((to_x - from_x) == 0)
+ return;
+
+ for(y = from_y; y <= to_y; y++) {
+ first = right = GetBit(BW->bitmap.image, from_x, y);
+ for(x = from_x + 1; x <= to_x; x++) {
+ left = GetBit(BW->bitmap.image, x, y);
+ if (right != left)
+ InvertPoint(BW, x, y);
+ right = left;
+ }
+ if(first != left)
+ InvertPoint(BW, from_x, y);
+ }
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y)
+ &&
+ !BWQueryMarked(w))
+ BWSetHotSpot(w,
+ (BW->bitmap.hot.x + 1) % BW->bitmap.image->width,
+ BW->bitmap.hot.y);
+}
+
+void TransferImageData();
+
+void BWFold(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ Position x, y, new_x, new_y;
+ Dimension horiz, vert;
+ char *storage_data;
+ XImage *storage;
+
+ storage_data = CreateCleanData(Length(BW->bitmap.image->width,
+ BW->bitmap.image->height));
+
+ storage = CreateBitmapImage(BW, storage_data,
+ (Dimension) BW->bitmap.image->width,
+ (Dimension) BW->bitmap.image->height);
+
+ TransferImageData(BW->bitmap.image, storage);
+
+ BW->bitmap.fold ^= True;
+ horiz = (BW->bitmap.image->width + BW->bitmap.fold) / 2;
+ vert = (BW->bitmap.image->height + BW->bitmap.fold) / 2;
+
+ for (x = 0; x < BW->bitmap.image->width; x++)
+ for (y = 0; y < BW->bitmap.image->height; y++) {
+ new_x = (int)(x + horiz) % (int)BW->bitmap.image->width;
+ new_y = (int)(y + vert) % (int)BW->bitmap.image->height;
+ if(GetBit(BW->bitmap.image, new_x, new_y) !=
+ GetBit(storage, x, y))
+ InvertPoint(BW, new_x, new_y);
+ }
+
+ DestroyBitmapImage(&storage);
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y))
+ BWSetHotSpot(w,
+ (Position)
+ ((int)(BW->bitmap.hot.x+horiz)
+ %(int)BW->bitmap.image->width),
+ (Position)
+ ((int)(BW->bitmap.hot.y+vert)
+ %(int)BW->bitmap.image->height)
+ );
+}
+
+
+void BWClear(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ register Position x, y;
+ int i, length;
+
+ length = Length(BW->bitmap.image->width, BW->bitmap.image->height);
+
+ for (x = 0; x < BW->bitmap.image->width; x++)
+ for (y = 0; y < BW->bitmap.image->height; y++)
+ if (GetBit(BW->bitmap.image, x, y))
+ DrawSquare(BW, x, y);
+
+ for (i = 0; i < length; i++)
+ BW->bitmap.image->data[i] = 0;
+
+}
+
+void BWSet(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ register Position x, y;
+ int i, length;
+
+ length = Length(BW->bitmap.image->width, BW->bitmap.image->height);
+
+ for (x = 0; x < BW->bitmap.image->width; x++)
+ for (y = 0; y < BW->bitmap.image->height; y++)
+ if (!GetBit(BW->bitmap.image, x, y))
+ DrawSquare(BW, x, y);
+
+ for (i = 0; i < length; i++)
+ BW->bitmap.image->data[i] = 255;
+
+}
+
+void BWRedraw(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ XClearArea(XtDisplay(BW), XtWindow(BW),
+ 0, 0, BW->core.width, BW->core.height,
+ True);
+}
+
+void BWInvert(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ int i, length;
+
+ length = Length(BW->bitmap.image->width, BW->bitmap.image->height);
+
+ XFillRectangle(XtDisplay(BW), XtWindow(BW),
+ BW->bitmap.drawing_gc,
+ InWindowX(BW, 0), InWindowY(BW, 0),
+ InWindowX(BW, BW->bitmap.image->width) - InWindowX(BW, 0),
+ InWindowY(BW, BW->bitmap.image->height) - InWindowY(BW, 0));
+
+ for (i = 0; i < length; i++)
+ BW->bitmap.image->data[i] ^= 255;
+}
+
+void BWFlipHoriz(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ register Position x, y;
+ Position from_x, from_y, to_x, to_y;
+ float half;
+
+ if (BWQueryMarked(w)) {
+ from_x = BW->bitmap.mark.from_x;
+ from_y = BW->bitmap.mark.from_y;
+ to_x = BW->bitmap.mark.to_x;
+ to_y = BW->bitmap.mark.to_y;
+ }
+ else {
+ from_x = 0;
+ from_y = 0;
+ to_x = BW->bitmap.width - 1;
+ to_y = BW->bitmap.height - 1;
+ }
+ half = (float) (to_y - from_y) / 2.0 + 0.5;
+
+ if (half == 0.0)
+ return;
+
+ for (x = from_x; x <= to_x; x++)
+ for (y = 0; y < half; y++)
+ if (GetBit(BW->bitmap.image, x, from_y + y) !=
+ GetBit(BW->bitmap.image, x, to_y - y)) {
+ InvertPoint(BW, x, from_y + y);
+ InvertPoint(BW, x, to_y - y);
+ }
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y)
+ &&
+ !BWQueryMarked(w))
+ BWSetHotSpot(w,
+ BW->bitmap.hot.x,
+ BW->bitmap.image->height - 1 - BW->bitmap.hot.y);
+}
+
+void BWFlipVert(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ register Position x, y;
+ Position from_x, from_y, to_x, to_y;
+ float half;
+
+ if (BWQueryMarked(w)) {
+ from_x = BW->bitmap.mark.from_x;
+ from_y = BW->bitmap.mark.from_y;
+ to_x = BW->bitmap.mark.to_x;
+ to_y = BW->bitmap.mark.to_y;
+ }
+ else {
+ from_x = 0;
+ from_y = 0;
+ to_x = BW->bitmap.width - 1;
+ to_y = BW->bitmap.height - 1;
+ }
+ half = (float) (to_x - from_x) / 2.0 + 0.5;
+
+ if (half == 0)
+ return;
+
+ for (y = from_y; y <= to_y; y++)
+ for (x = 0; x < half; x++)
+ if (GetBit(BW->bitmap.image, from_x + x, y) !=
+ GetBit(BW->bitmap.image, to_x - x, y)) {
+ InvertPoint(BW, from_x + x, y);
+ InvertPoint(BW, to_x - x, y);
+ }
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y)
+ &&
+ !BWQueryMarked(w))
+ BWSetHotSpot(w,
+ BW->bitmap.image->width - 1 - BW->bitmap.hot.x,
+ BW->bitmap.hot.y);
+}
+
+
+void BWRotateRight(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ Position x, y, delta, shift, tmp;
+ Position half_width, half_height;
+ XPoint hot;
+ bit quad1, quad2, quad3, quad4;
+ Position from_x, from_y, to_x, to_y;
+
+ if (BWQueryMarked(w)) {
+ from_x = BW->bitmap.mark.from_x;
+ from_y = BW->bitmap.mark.from_y;
+ to_x = BW->bitmap.mark.to_x;
+ to_y = BW->bitmap.mark.to_y;
+ }
+ else {
+ from_x = 0;
+ from_y = 0;
+ to_x = BW->bitmap.width - 1;
+ to_y = BW->bitmap.height - 1;
+ }
+
+ half_width = floor((to_x - from_x) / 2.0 + 0.5);
+ half_height = floor((to_y - from_y ) / 2.0 + 0.5);
+ shift = min((Position)(to_x - from_x), (Position)(to_y - from_y )) % 2;
+ delta = min((Position) half_width, (Position) half_height) - shift;
+
+ for (x = 0; x <= delta; x++) {
+ for (y = 1 - shift; y <= delta; y++) {
+ quad1 = GetBit(BW->bitmap.image,
+ from_x + (Position)half_width + x,
+ from_y + (Position)half_height + y);
+ quad2 = GetBit(BW->bitmap.image,
+ from_x + (Position)half_width + y,
+ from_y + (Position)half_height - shift - x);
+ quad3 = GetBit(BW->bitmap.image,
+ from_x + (Position)half_width - shift - x,
+ from_y + (Position)half_height - shift - y);
+ quad4 = GetBit(BW->bitmap.image,
+ from_x + (Position)half_width - shift - y,
+ from_y + (Position)half_height + x);
+
+ if (quad1 != quad2)
+ InvertPoint(BW,
+ from_x + (Position)half_width + x,
+ from_y + (Position)half_height + y);
+ if (quad2 != quad3)
+ InvertPoint(BW,
+ from_x + (Position)half_width + y,
+ from_y + (Position)half_height - shift - x);
+ if (quad3 != quad4)
+ InvertPoint(BW,
+ from_x + (Position)half_width - shift - x,
+ from_y + (Position)half_height - shift - y);
+ if (quad4 != quad1)
+ InvertPoint(BW,
+ from_x + (Position)half_width - shift - y,
+ from_y + (Position)half_height + x);
+ }
+ }
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y)
+ &&
+ !BWQueryMarked(w)) {
+ hot.x = BW->bitmap.hot.x - half_width;
+ hot.y = BW->bitmap.hot.y - half_height;
+ if (hot.x >= 0) hot.x += shift;
+ if (hot.y >= 0) hot.y += shift;
+ tmp = hot.x;
+ hot.x = - hot.y;
+ hot.y = tmp;
+ if (hot.x > 0) hot.x -= shift;
+ if (hot.y > 0) hot.y -= shift;
+ hot.x += half_width;
+ hot.y += half_height;
+ if (QueryInBitmap(BW, hot.x, hot.y))
+ BWSetHotSpot(w, hot.x, hot.y);
+ }
+
+}
+
+void BWRotateLeft(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ Position x, y,delta, shift, tmp;
+ Position half_width, half_height;
+ XPoint hot;
+ bit quad1, quad2, quad3, quad4;
+ Position from_x, from_y, to_x, to_y;
+
+ if (BWQueryMarked(w)) {
+ from_x = BW->bitmap.mark.from_x;
+ from_y = BW->bitmap.mark.from_y;
+ to_x = BW->bitmap.mark.to_x;
+ to_y = BW->bitmap.mark.to_y;
+ }
+ else {
+ from_x = 0;
+ from_y = 0;
+ to_x = BW->bitmap.width - 1;
+ to_y = BW->bitmap.height - 1;
+ }
+
+ half_width = floor((to_x - from_x) / 2.0 + 0.5);
+ half_height = floor((to_y - from_y ) / 2.0 + 0.5);
+ shift = min((Position)(to_x - from_x), (Position)(to_y - from_y )) % 2;
+ delta = min((Position) half_width, (Position) half_height) - shift;
+
+ for (x = 0; x <= delta; x++) {
+ for (y = 1 - shift; y <= delta; y++) {
+ quad1 = GetBit(BW->bitmap.image,
+ from_x + (Position)half_width + x,
+ from_y + (Position)half_height + y);
+ quad2 = GetBit(BW->bitmap.image,
+ from_x + (Position)half_width + y,
+ from_y + (Position)half_height - shift - x);
+ quad3 = GetBit(BW->bitmap.image,
+ from_x + (Position)half_width - shift - x,
+ from_y + (Position)half_height - shift - y);
+ quad4 = GetBit(BW->bitmap.image,
+ from_x + (Position)half_width - shift - y,
+ from_y + (Position)half_height + x);
+
+ if (quad1 != quad4)
+ InvertPoint(BW,
+ from_x + (Position)half_width + x,
+ from_y + (Position)half_height + y);
+ if (quad2 != quad1)
+ InvertPoint(BW,
+ from_x + (Position)half_width + y,
+ from_y + (Position)half_height - shift - x);
+ if (quad3 != quad2)
+ InvertPoint(BW,
+ from_x + (Position)half_width - shift - x,
+ from_y + (Position)half_height - shift - y);
+ if (quad4 != quad3)
+ InvertPoint(BW,
+ from_x + (Position)half_width - shift - y,
+ from_y + (Position)half_height + x);
+ }
+ }
+
+ if (QuerySet(BW->bitmap.hot.x, BW->bitmap.hot.y)
+ &&
+ !BWQueryMarked(w)) {
+ hot.x = BW->bitmap.hot.x - half_width;
+ hot.y = BW->bitmap.hot.y - half_height;
+ if (hot.x >= 0) hot.x += shift;
+ if (hot.y >= 0) hot.y += shift;
+ tmp = hot.x;
+ hot.x = hot.y;
+ hot.y = - tmp;
+ if (hot.x > 0) hot.x -= shift;
+ if (hot.y > 0) hot.y -= shift;
+ hot.x += half_width;
+ hot.y += half_height;
+ if (QueryInBitmap(BW, hot.x, hot.y))
+ BWSetHotSpot(w, hot.x, hot.y);
+ }
+}
+
+
+void CopyImageData(source, destination, from_x, from_y, to_x, to_y, at_x, at_y)
+ XImage *source, *destination;
+ Position from_x, from_y, to_x, to_y, at_x, at_y;
+{
+ Position x, y, delta_x, delta_y;
+
+ delta_x = to_x - from_x + 1;
+ delta_y = to_y - from_y + 1;
+
+ for (x = 0; x < delta_x; x++)
+ for (y = 0; y < delta_y; y++)
+ if (GetBit(source, from_x + x, from_y + y))
+ SetBit(destination, at_x + x, at_y + y);
+ else
+ ClearBit(destination, at_x + x, at_y + y);
+}
+
+XImage *ConvertToBitmapImage(BW, image)
+ BitmapWidget BW;
+ XImage *image;
+{
+ XImage *bitmap_image;
+ char *data;
+ Position x, y;
+
+ data = CreateCleanData(Length(image->width, image->height));
+ bitmap_image = CreateBitmapImage(BW, data,
+ (Dimension) image->width,
+ (Dimension) image->height);
+
+ for (x = 0; x < min(image->width, bitmap_image->width); x++)
+ for (y = 0; y < min(image->height, bitmap_image->height); y++)
+ if ((XGetPixel(image, x, y) != 0) != GetBit(bitmap_image, x, y))
+ InvertBit(bitmap_image, x, y);
+
+ return bitmap_image;
+}
+
+void TransferImageData(source, destination)
+ XImage *source, *destination;
+{
+ Position x, y;
+
+ for (x = 0; x < min(source->width, destination->width); x++)
+ for (y = 0; y < min(source->height, destination->height); y++)
+ if (GetBit(source, x, y) != GetBit(destination, x, y))
+ InvertBit(destination, x, y);
+}
+
+void BWStore(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ Dimension width, height;
+ char *storage_data;
+
+ if (QuerySet(BW->bitmap.mark.from_x, BW->bitmap.mark.from_y)) {
+
+ DestroyBitmapImage(&BW->bitmap.storage);
+
+ width = BW->bitmap.mark.to_x - BW->bitmap.mark.from_x + 1;
+ height = BW->bitmap.mark.to_y - BW->bitmap.mark.from_y + 1;
+
+ storage_data = CreateCleanData(Length(width, height));
+
+ BW->bitmap.storage = CreateBitmapImage(BW,
+ storage_data,
+ width, height);
+
+ CopyImageData(BW->bitmap.image, BW->bitmap.storage,
+ BW->bitmap.mark.from_x, BW->bitmap.mark.from_y,
+ BW->bitmap.mark.to_x, BW->bitmap.mark.to_y,
+ 0, 0);
+ }
+}
+
+void BWClearMarked(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ if (QuerySet(BW->bitmap.mark.from_x, BW->bitmap.mark.from_y))
+ BWDrawFilledRectangle(w,
+ BW->bitmap.mark.from_x,
+ BW->bitmap.mark.from_y,
+ BW->bitmap.mark.to_x,
+ BW->bitmap.mark.to_y,
+ Clear);
+}
+
+
+void BWDragMarked(w, at_x, at_y)
+ Widget w;
+ Position at_x, at_y;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ if (QuerySet(BW->bitmap.mark.from_x, BW->bitmap.mark.from_y))
+ BWDrawRectangle(w,
+ at_x, at_y,
+ at_x + BW->bitmap.mark.to_x - BW->bitmap.mark.from_x,
+ at_y + BW->bitmap.mark.to_y - BW->bitmap.mark.from_y,
+ Highlight);
+}
+
+void BWDragStored(w, at_x, at_y)
+ Widget w;
+ Position at_x, at_y;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ if (BW->bitmap.storage)
+ BWDrawRectangle(w,
+ at_x, at_y,
+ at_x + BW->bitmap.storage->width - 1,
+ at_y + BW->bitmap.storage->height - 1,
+ Highlight);
+}
+
+void DrawImageData(BW, image, at_x, at_y, value)
+ BitmapWidget BW;
+ XImage *image;
+ Position at_x, at_y;
+ int value;
+{
+ Position x, y;
+ Boolean C, S, I, H;
+ bit A, B;
+
+ C = value == Clear;
+ S = value == Set;
+ I = value == Invert;
+ H = value == Highlight;
+
+ for (x = 0; x < image->width; x++)
+ for (y = 0; y < image->height; y++) {
+ A = GetBit(image, x, y);
+ B = GetBit(BW->bitmap.image, at_x + x, at_y + y);
+ if (A & C | (A | B) & S | (A ^ B) & I | (A | B) & H)
+ value = (A & H) ? Highlight : Set;
+ else
+ value = Clear;
+ BWDrawPoint((Widget) BW,
+ at_x + x, at_y + y,
+ value);
+ }
+}
+
+void BWRestore(w, at_x, at_y, value)
+ Widget w;
+ Position at_x, at_y;
+ int value;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ if (BW->bitmap.storage) {
+ DrawImageData(BW, BW->bitmap.storage, at_x, at_y, value);
+ /*DestroyBitmapImage(&BW->bitmap.storage);*/
+ }
+}
+
+void BWCopy(w, at_x, at_y, value)
+ Widget w;
+ Position at_x, at_y;
+ int value;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ XImage *storage;
+ char *storage_data;
+ Dimension width, height;
+
+ if (QuerySet(BW->bitmap.mark.from_x, BW->bitmap.mark.from_y)) {
+
+ width = BW->bitmap.mark.to_x - BW->bitmap.mark.from_x + 1;
+ height = BW->bitmap.mark.to_y - BW->bitmap.mark.from_y + 1;
+
+ storage_data = CreateCleanData(Length(width, height));
+
+ storage = CreateBitmapImage(BW, storage_data, width, height);
+
+ CopyImageData(BW->bitmap.image, storage,
+ BW->bitmap.mark.from_x, BW->bitmap.mark.from_y,
+ BW->bitmap.mark.to_x, BW->bitmap.mark.to_y,
+ 0, 0);
+
+ DrawImageData(BW, storage, at_x, at_y, value);
+
+ DestroyBitmapImage(&storage);
+ }
+}
+
+void BWMark();
+
+void BWMove(w, at_x, at_y, value)
+ Widget w;
+ Position at_x, at_y;
+ int value;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ XImage *storage;
+ char *storage_data;
+ Dimension width, height;
+
+ if (QuerySet(BW->bitmap.mark.from_x, BW->bitmap.mark.from_y)) {
+
+ width = BW->bitmap.mark.to_x - BW->bitmap.mark.from_x + 1;
+ height = BW->bitmap.mark.to_y - BW->bitmap.mark.from_y + 1;
+
+ storage_data = CreateCleanData(Length(width, height));
+
+ storage = CreateBitmapImage(BW, storage_data, width, height);
+
+ CopyImageData(BW->bitmap.image, storage,
+ BW->bitmap.mark.from_x, BW->bitmap.mark.from_y,
+ BW->bitmap.mark.to_x, BW->bitmap.mark.to_y,
+ 0, 0);
+
+ BWDrawFilledRectangle(w,
+ BW->bitmap.mark.from_x, BW->bitmap.mark.from_y,
+ BW->bitmap.mark.to_x, BW->bitmap.mark.to_y,
+ Clear);
+
+ DrawImageData(BW, storage, at_x, at_y, value);
+
+ BWMark(w, at_x, at_y,
+ at_x + BW->bitmap.mark.to_x - BW->bitmap.mark.from_x,
+ at_y + BW->bitmap.mark.to_y - BW->bitmap.mark.from_y);
+
+ DestroyBitmapImage(&storage);
+ }
+}
+
+void BWRedrawMark(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ if (QuerySet(BW->bitmap.mark.from_x, BW->bitmap.mark.from_y))
+ XFillRectangle(XtDisplay(BW), XtWindow(BW), BW->bitmap.highlighting_gc,
+ InWindowX(BW, BW->bitmap.mark.from_x),
+ InWindowY(BW, BW->bitmap.mark.from_y),
+ InWindowX(BW, BW->bitmap.mark.to_x + 1) -
+ InWindowX(BW, BW->bitmap.mark.from_x),
+ InWindowY(BW, BW->bitmap.mark.to_y + 1) -
+ InWindowY(BW, BW->bitmap.mark.from_y));
+}
+
+void BWStoreToBuffer(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ memmove( BW->bitmap.buffer->data, BW->bitmap.image->data,
+ Length(BW->bitmap.image->width, BW->bitmap.image->height));
+
+ BW->bitmap.buffer_hot = BW->bitmap.hot;
+ BW->bitmap.buffer_mark = BW->bitmap.mark;
+}
+
+void BWUnmark(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ BW->bitmap.buffer_mark = BW->bitmap.mark;
+
+ if (QuerySet(BW->bitmap.mark.from_x, BW->bitmap.mark.from_y)) {
+ XFillRectangle(XtDisplay(BW), XtWindow(BW), BW->bitmap.highlighting_gc,
+ InWindowX(BW, BW->bitmap.mark.from_x),
+ InWindowY(BW, BW->bitmap.mark.from_y),
+ InWindowX(BW, BW->bitmap.mark.to_x + 1) -
+ InWindowX(BW, BW->bitmap.mark.from_x),
+ InWindowY(BW, BW->bitmap.mark.to_y + 1) -
+ InWindowY(BW, BW->bitmap.mark.from_y));
+
+ BW->bitmap.mark.from_x = BW->bitmap.mark.from_y = NotSet;
+ BW->bitmap.mark.to_x = BW->bitmap.mark.to_y = NotSet;
+ }
+}
+
+void BWMark(w, from_x, from_y, to_x, to_y)
+ Widget w;
+ Position from_x, from_y,
+ to_x, to_y;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ BWUnmark(w);
+
+ if (QuerySet(from_x, from_y)) {
+ if ((from_x == to_x) && (from_y == to_y)) {
+ /*
+ BW->bitmap.mark.from_x = 0;
+ BW->bitmap.mark.from_y = 0;
+ BW->bitmap.mark.to_x = BW->bitmap.image->width - 1;
+ BW->bitmap.mark.to_y = BW->bitmap.image->height - 1;
+ */
+ return;
+ }
+ else {
+ QuerySwap(from_x, to_x);
+ QuerySwap(from_y, to_y);
+ from_x = max(0, from_x);
+ from_y = max(0, from_y);
+ to_x = min(BW->bitmap.image->width - 1, to_x);
+ to_y = min(BW->bitmap.image->height - 1, to_y);
+
+ BW->bitmap.mark.from_x = from_x;
+ BW->bitmap.mark.from_y = from_y;
+ BW->bitmap.mark.to_x = to_x;
+ BW->bitmap.mark.to_y = to_y;
+ }
+
+ XFillRectangle(XtDisplay(BW), XtWindow(BW), BW->bitmap.highlighting_gc,
+ InWindowX(BW, BW->bitmap.mark.from_x),
+ InWindowY(BW, BW->bitmap.mark.from_y),
+ InWindowX(BW, BW->bitmap.mark.to_x + 1) -
+ InWindowX(BW, BW->bitmap.mark.from_x),
+ InWindowY(BW, BW->bitmap.mark.to_y +1) -
+ InWindowY(BW, BW->bitmap.mark.from_y));
+ }
+}
+
+void BWMarkAll(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ BWMark(w, 0, 0, BW->bitmap.image->width - 1, BW->bitmap.image->height - 1);
+}
+
+void BWUndo(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+ Position x, y;
+ char *tmp_data;
+ XPoint tmp_hot;
+ BWArea tmp_mark;
+
+ tmp_data = BW->bitmap.image->data;
+ BW->bitmap.image->data = BW->bitmap.buffer->data;
+ BW->bitmap.buffer->data = tmp_data;
+
+ tmp_hot = BW->bitmap.hot;
+ tmp_mark = BW->bitmap.mark;
+
+ for (x = 0; x < BW->bitmap.image->width; x++)
+ for (y = 0; y < BW->bitmap.image->height; y++)
+ if (GetBit(BW->bitmap.image, x, y) != GetBit(BW->bitmap.buffer, x, y))
+ DrawSquare(BW, x, y);
+
+ BWSetHotSpot(w, BW->bitmap.buffer_hot.x, BW->bitmap.buffer_hot.y);
+/*
+ BWMark(w, BW->bitmap.buffer_mark.from_x, BW->bitmap.buffer_mark.from_y,
+ BW->bitmap.buffer_mark.to_x, BW->bitmap.buffer_mark.to_y);
+*/
+ BW->bitmap.buffer_hot = tmp_hot;
+ BW->bitmap.buffer_mark= tmp_mark;
+
+}
+
+void BWHighlightAxes(w)
+ Widget w;
+{
+ BitmapWidget BW = (BitmapWidget) w;
+
+ XDrawLine(XtDisplay(BW), XtWindow(BW),
+ BW->bitmap.axes_gc,
+ InWindowX(BW, 0),
+ InWindowY(BW, 0),
+ InWindowX(BW, BW->bitmap.width),
+ InWindowY(BW, BW->bitmap.height));
+ XDrawLine(XtDisplay(BW), XtWindow(BW),
+ BW->bitmap.axes_gc,
+ InWindowX(BW, BW->bitmap.width),
+ InWindowY(BW, 0),
+ InWindowX(BW, 0),
+ InWindowY(BW, BW->bitmap.height));
+ XDrawLine(XtDisplay(BW), XtWindow(BW),
+ BW->bitmap.axes_gc,
+ InWindowX(BW, 0),
+ InWindowY(BW, (float)BW->bitmap.height / 2.0),
+ InWindowX(BW, BW->bitmap.width),
+ InWindowY(BW, (float)BW->bitmap.height / 2.0));
+ XDrawLine(XtDisplay(BW), XtWindow(BW),
+ BW->bitmap.axes_gc,
+ InWindowX(BW, (float)BW->bitmap.width / 2.0),
+ InWindowY(BW, 0),
+ InWindowX(BW, (float)BW->bitmap.width / 2.0),
+ InWindowY(BW, BW->bitmap.height));
+}
+
+typedef struct {
+ Position *x, *y;
+ Dimension *width, *height;
+} Table;
+
+XImage *ScaleBitmapImage(BW, src, scale_x, scale_y)
+ BitmapWidget BW;
+ XImage *src;
+ double scale_x, scale_y;
+{
+ char *data;
+ XImage *dst;
+ Table table;
+ Position x, y, w, h;
+ Dimension width, height;
+ bit pixel;
+
+ width = max(rint(scale_x * src->width), 1);
+ height = max(rint(scale_y * src->height), 1);
+
+ data = CreateCleanData(Length(width, height));
+ dst = CreateBitmapImage(BW, data, width, height);
+
+ /*
+ * It would be nice to check if width or height < 1.0 and
+ * average the skipped pixels. But, it is slow as it is now.
+ */
+ if (scale_x == 1.0 && scale_y == 1.0)
+ memmove( dst->data, src->data, Length(width, height));
+ else {
+ table.x = (Position *) XtMalloc(sizeof(Position) * src->width);
+ table.y = (Position *) XtMalloc(sizeof(Position) * src->height);
+ table.width = (Dimension *) XtMalloc(sizeof(Dimension) * src->width);
+ table.height = (Dimension *) XtMalloc(sizeof(Dimension) * src->height);
+
+ for (x = 0; x < src->width; x++) {
+ table.x[x] = rint(scale_x * x);
+ table.width[x] = rint(scale_x * (x + 1)) - rint(scale_x * x);
+ }
+ for (y = 0; y < src->height; y++) {
+ table.y[y] = rint(scale_y * y);
+ table.height[y] = rint(scale_y * (y + 1)) - rint(scale_y * y);
+ }
+
+ for (x = 0; x < src->width; x++)
+ for (y = 0; y < src->height; y++) {
+ pixel = GetBit(src, x, y);
+ for (w = 0; (int)w < (int)table.width[x]; w++)
+ for (h = 0; (int)h < (int)table.height[y]; h++)
+ if (pixel) SetBit(dst,
+ table.x[x] + w,
+ table.y[y] + h);
+ }
+
+ XtFree((char *)table.x);
+ XtFree((char *)table.y);
+ XtFree((char *)table.width);
+ XtFree((char *)table.height);
+ }
+
+ return (dst);
+}
+
+/*****************************************************************************/
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 19:46:18 +0000