void
BWUp(Widget w)
{
BitmapWidget BW = (BitmapWidget) w;
register Position x, y;
bit first, up, down=0;
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
BWLeft(Widget w)
{
BitmapWidget BW = (BitmapWidget) w;
register Position x, y;
bit first, left, right=0;
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);
}
/* ARGSUSED */
static Boolean
ConvertSelection(Widget w, Atom *selection, Atom *target, Atom *type,
XtPointer *val_ret, unsigned long *length, int *format)
{
XPointer *value = (XPointer *)val_ret;
BitmapWidget BW = (BitmapWidget) w;
Pixmap *pixmap;
char *data;
XImage *image;
Dimension width, height;
switch (*target) {
/* XA_TARGETS undefined ?!?
case XA_TARGETS:
*type = XA_ATOM;
*value = (XPointer) bitmapClassRec.bitmap_class.targets;
*length = bitmapClassRec.bitmap_class.num_targets;
*format = 32;
return True;
*/
case XA_BITMAP:
case XA_PIXMAP:
if (BWQueryMarked(w)) {
width = BW->bitmap.mark.to_x - BW->bitmap.mark.from_x + 1;
height = BW->bitmap.mark.to_y - BW->bitmap.mark.from_y + 1;
data = CreateCleanData(Length(width, height));
image = CreateBitmapImage(BW, data, width, height);
CopyImageData(BW->bitmap.image, image,
BW->bitmap.mark.from_x, BW->bitmap.mark.from_y,
BW->bitmap.mark.to_x, BW->bitmap.mark.to_y, 0, 0);
pixmap = (Pixmap *) XtMalloc(sizeof(Pixmap));
*pixmap = GetPixmap(BW, image);
DestroyBitmapImage(&image);
}
else if (BWQueryStored(w)) {
pixmap = (Pixmap *) XtMalloc(sizeof(Pixmap));
*pixmap = GetPixmap(BW, BW->bitmap.storage);
}
else return False;
*type = XA_PIXMAP;
*value = (XPointer) pixmap;
*length = 1;
*format = 32;
return True;
default:
return False;
}
}
void
BWFlipVert(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(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);
}
}
