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Skunkware 5
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xpaint-2.1.1
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boxOp.c
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C/C++ Source or Header
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1995-05-03
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6KB
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221 lines
/* +-------------------------------------------------------------------+ */
/* | Copyright 1992, 1993, David Koblas (koblas@netcom.com) | */
/* | | */
/* | Permission to use, copy, modify, and to distribute 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. There is no | */
/* | representations about the suitability of this software for | */
/* | any purpose. this software is provided "as is" without express | */
/* | or implied warranty. | */
/* | | */
/* +-------------------------------------------------------------------+ */
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include "xpaint.h"
#include "misc.h"
#include "Paint.h"
typedef struct {
int rx, ry;
int startX, startY, endX, endY;
int drawn;
Boolean type; /* Is is a rectangle or square? */
Boolean fill; /* Filled rectangle? */
Boolean swap;
GC gcx;
} LocalInfo;
#define MKRECT(rect, sx, sy, ex, ey, typeFlag) do { \
if (typeFlag == 1) { \
(rect)->width = MAX(ABS(sx - ex),ABS(sy - ey)); \
(rect)->height = (rect)->width; \
(rect)->x = (ex - sx < 0) ? sx - (rect)->width : sx; \
(rect)->y = (ey - sy < 0) ? sy - (rect)->height : sy; \
} else if (typeFlag == 2) { \
(rect)->width = MAX(ABS(sx - ex),ABS(sy - ey)); \
(rect)->x = sx - (rect)->width; \
(rect)->y = sy - (rect)->width; \
(rect)->width *= 2; \
(rect)->height = (rect)->width; \
} else { \
(rect)->x = MIN(sx, ex); \
(rect)->y = MIN(sy, ey); \
(rect)->width = MAX(sx, ex) - (rect)->x; \
(rect)->height = MAX(sy, ey) - (rect)->y; \
} \
} while (0)
static int boxStyle = 0;
static void press(Widget w, LocalInfo *l,
XButtonEvent *event, OpInfo *info)
{
/*
** Check to make sure all buttons are up, before doing this
*/
if ((event->state & (Button1Mask|Button2Mask|Button3Mask|Button4Mask|Button5Mask)) != 0)
return;
l->swap = (event->button == Button2);
l->rx = info->x;
l->ry = info->y;
l->endX = l->startX = event->x;
l->endY = l->startY = event->y;
if (boxStyle == 1)
l->type = 2;
else
l->type = (event->state & ShiftMask) ? 1 : 0;
l->drawn = False;
}
static void motion(Widget w, LocalInfo *l,
XMotionEvent *event, OpInfo *info)
{
XRectangle rect;
if (l->drawn) {
MKRECT(&rect, l->startX, l->startY, l->endX, l->endY, l->type);
XDrawRectangles(XtDisplay(w), XtWindow(w), l->gcx, &rect,1);
}
l->endX = event->x;
l->endY = event->y;
/*
** Really set this flag in the if statement
*/
if (boxStyle == 1)
l->type = 2;
else
l->type = (event->state & ShiftMask) ? 1 : 0;
if (l->drawn = (l->startX != l->endX || l->startY != l->endY)) {
MKRECT(&rect, l->startX, l->startY, l->endX, l->endY, l->type);
XDrawRectangles(XtDisplay(w), XtWindow(w), l->gcx,&rect, 1);
}
}
static void release(Widget w, LocalInfo *l,
XButtonEvent *event, OpInfo *info)
{
XRectangle rect;
int mask;
GC fgc, lgc;
/*
** Check to make sure all buttons are up, before doing this
*/
mask = Button1Mask|Button2Mask|Button3Mask|Button4Mask|Button5Mask;
switch (event->button) {
case Button1: mask ^= Button1Mask; break;
case Button2: mask ^= Button2Mask; break;
case Button3: mask ^= Button3Mask; break;
case Button4: mask ^= Button4Mask; break;
case Button5: mask ^= Button5Mask; break;
}
if ((event->state & mask) != 0)
return;
if (l->drawn && info->surface == opWindow) {
MKRECT(&rect, l->startX, l->startY, l->endX, l->endY, l->type);
XDrawRectangles(XtDisplay(w), XtWindow(w), l->gcx,&rect, 1);
}
if (info->isFat && info->surface == opWindow)
return;
MKRECT(&rect, l->rx, l->ry, event->x, event->y, l->type);
UndoStart(w, info);
if (l->swap) {
fgc = info->first_gc;
lgc = info->second_gc;
} else {
fgc = info->second_gc;
lgc = info->first_gc;
}
if (l->fill)
XFillRectangles(XtDisplay(w), info->drawable, fgc, &rect, 1);
XDrawRectangles(XtDisplay(w), info->drawable, lgc, &rect, 1);
if (info->surface == opPixmap) {
rect.width++;
rect.height++;
UndoSetRectangle(w, &rect);
PwUpdate(w, &rect, False);
}
}
/*
** Public routines
*/
void *BoxAdd(Widget w)
{
LocalInfo *l = (LocalInfo *)XtMalloc(sizeof(LocalInfo));
l->fill = False;
l->gcx = GetGCX(w);
XtVaSetValues(w, XtNcompress, True, NULL);
OpAddEventHandler(w, opWindow, ButtonPressMask, FALSE, (OpEventProc)press, l);
OpAddEventHandler(w, opWindow, ButtonMotionMask, FALSE, (OpEventProc)motion, l);
OpAddEventHandler(w, opWindow|opPixmap, ButtonReleaseMask, FALSE, (OpEventProc)release, l);
SetCrossHairCursor(w);
return l;
}
void BoxRemove(Widget w, LocalInfo *l)
{
OpRemoveEventHandler(w, opWindow, ButtonPressMask, FALSE, (OpEventProc)press, l);
OpRemoveEventHandler(w, opWindow, ButtonMotionMask, FALSE, (OpEventProc)motion, l);
OpRemoveEventHandler(w, opWindow|opPixmap, ButtonReleaseMask, FALSE, (OpEventProc)release, l);
XtFree((XtPointer)l);
}
void *FBoxAdd(Widget w)
{
LocalInfo *l = (LocalInfo *)XtMalloc(sizeof(LocalInfo));
l->fill = True;
l->gcx = GetGCX(w);
XtVaSetValues(w, XtNcompress, False, NULL);
OpAddEventHandler(w, opWindow, ButtonPressMask, FALSE, (OpEventProc)press, l);
OpAddEventHandler(w, opWindow, ButtonMotionMask, FALSE, (OpEventProc)motion, l);
OpAddEventHandler(w, opWindow|opPixmap, ButtonReleaseMask, FALSE, (OpEventProc)release, l);
SetCrossHairCursor(w);
return l;
}
void FBoxRemove(Widget w, LocalInfo *l)
{
OpRemoveEventHandler(w, opWindow, ButtonPressMask, FALSE, (OpEventProc)press, l);
OpRemoveEventHandler(w, opWindow, ButtonMotionMask, FALSE, (OpEventProc)motion, l);
OpRemoveEventHandler(w, opWindow|opPixmap, ButtonReleaseMask, FALSE, (OpEventProc)release, l);
XtFree((XtPointer)l);
}
void BoxSetStyle(Boolean mode)
{
boxStyle = mode ? 1 : 0;
}
Boolean BoxGetStyle(Boolean mode)
{
return boxStyle == 0 ? False : True;
}