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motion.c
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motion.c
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/*
* motion.c
*
* The Motion event handler for Xdisp.
*
* Handle_Motion()
*
* Copyright Bruce Pike, 1993-2000
*/
#include "xdisp.h"
/*----------------------------- Handle_Motion -----------------------*/
void Handle_Motion(XEvent *event)
{
int pix, i, ind, ix, iy, ml8, ml9, ml10, xp, yp, dw, dh, flag;
float fxp, fyp, rw_pix, rw_coord[MAX_VAR_DIMS],
fx, fy, tmp1, tmp2, tmp3, tx, ty, tz;
char orient_msg[32];
XEvent mEvent;
/* draw profiles if active */
if (v_profile_active || h_profile_active) {
Refresh();
if (v_profile_active && theEvent.xmotion.x < zWidth) {
profile_x = theEvent.xmotion.x;
V_Profile();
}
if (h_profile_active && theEvent.xmotion.y < zHeight) {
profile_y = theEvent.xmotion.y;
H_Profile();
}
}
/* plot data if plot function is active */
if (plot_active!=-1) {
/* draw the roi box on the image */
Refresh();
dw = (int)floor(((float)((plot_roi_size*2 + 1)*zWidth) / (float)(Width*2))+0.5);
dh = (int)floor(((float)((plot_roi_size*2 + 1)*zWidth) / (float)(Width*2))+0.5);
XDrawLine(theDisp,mainW,grGC,
theEvent.xmotion.x-dw, theEvent.xmotion.y-dh,
theEvent.xmotion.x+dw, theEvent.xmotion.y-dh);
XDrawLine(theDisp,mainW,grGC,
theEvent.xmotion.x+dw, theEvent.xmotion.y-dh,
theEvent.xmotion.x+dw, theEvent.xmotion.y+dh);
XDrawLine(theDisp,mainW,grGC,
theEvent.xmotion.x+dw, theEvent.xmotion.y+dh,
theEvent.xmotion.x-dw, theEvent.xmotion.y+dh);
XDrawLine(theDisp,mainW,grGC,
theEvent.xmotion.x-dw, theEvent.xmotion.y+dh,
theEvent.xmotion.x-dw, theEvent.xmotion.y-dh);
/* plot the profile */
Plot_Profile(Plot_Canvas_Widget);
/* this may have taken a little while so remove all but
the last motion event to avoid huge motion event
buffers and hence time lags */
flag=0;
while (XCheckTypedWindowEvent(theDisp, mainW, MotionNotify, &mEvent))
{
flag=1;
}
if (flag) XSendEvent(theDisp, mainW, True, PointerMotionMask, &mEvent);
}
/* handle selective zooming box */
if (selzoom_active) {
draw_roi(roi_x1, roi_y1, roi_x2, roi_y2);
if ((theEvent.xmotion.x - zWidth/(selzoom_factor_x*2)) < 0) {
roi_x1 = 0;
roi_x2 = zWidth/selzoom_factor_x - 1;
}
else if ((theEvent.xmotion.x + zWidth/(selzoom_factor_x*2))
>= (zWidth-1)) {
roi_x1 = zWidth - zWidth/selzoom_factor_x;
roi_x2 = zWidth - 1;
}
else {
roi_x1 = (theEvent.xmotion.x -
zWidth/(selzoom_factor_x*2));
roi_x2 = (theEvent.xmotion.x +
zWidth/(selzoom_factor_x*2) - 1);
}
if ((theEvent.xmotion.y - zHeight/(selzoom_factor_y*2))< 0) {
roi_y1 = 0;
roi_y2 = zHeight/selzoom_factor_y - 1;
}
else if ((theEvent.xmotion.y + zHeight/(selzoom_factor_y*2))
>= (zHeight-1)) {
roi_y1 = zHeight - zHeight/selzoom_factor_y;
roi_y2 = zHeight-1;
}
else {
roi_y1 = (theEvent.xmotion.y -
zHeight/(selzoom_factor_y*2));
roi_y2 = (theEvent.xmotion.y +
zHeight/(selzoom_factor_y*2) - 1);
}
draw_roi(roi_x1, roi_y1, roi_x2, roi_y2);
}
/* if Button 2 is down we are changing the window and level */
if (theEvent.xmotion.state==Button2MotionMask) {
oLower=Lower; oUpper=Upper;
Upper=Upper+(oy-theEvent.xmotion.y)*steps;
Lower=Lower+(oy-theEvent.xmotion.y)*steps;
Lower=Lower+(ox-theEvent.xmotion.x)*steps;
Upper=Upper-(ox-theEvent.xmotion.x)*steps;
if ((oLower<=oUpper) && (Lower<=Upper)) {
Window_Level(Lower,Upper);
}
else if ((oLower>=oUpper) && (Lower>=Upper)) {
Window_Level(Lower,Upper);
}
else if ((oLower<=oUpper) && (Lower>=Upper)) {
Lower=oLower;
Upper=Lower+1;
Window_Level(Lower,Upper);
}
else {
Lower=oLower;
Upper=Lower-1;
Window_Level(Lower,Upper);
}
}
/* output the position and pixel values */
if (theEvent.xmotion.y<zHeight && theEvent.xmotion.y>=0 &&
theEvent.xmotion.x<zWidth && theEvent.xmotion.x>=0) {
xp = theEvent.xmotion.x;
yp = theEvent.xmotion.y;
/* if not zoomed... simple */
if (zWidth==Width && zHeight==Height) {
ind = (theEvent.xmotion.y * Width) +
theEvent.xmotion.x;
pix = (long int)short_Image[ind +
(load_all_images?image_number*Width*Height:0)];
}
else { /* if zoomed use selected interpolation */
if (Interpolation_Type==BILINEAR) {
fx = theEvent.xmotion.x*(Width-1.0)/(zWidth-1.0);
fy = theEvent.xmotion.y*(Height-1.0)/(zHeight-1.0);
ix = (int)fx;
iy = (int)fy;
ind = (iy * Width) + ix;
if (ind+1 > (Width*Height-1)) {
pix = (long int)short_Image[(Width*Height-1) +
(load_all_images?image_number*Width*Height:0)];
}
else {
tmp1 = short_Image[ind+(load_all_images?
image_number*Width*Height:0)]*
(1.0-(fx-ix)) + short_Image[ind+1+(load_all_images?
image_number*Width*Height:0)]*(fx-ix);
if ((ind+Width+(load_all_images?
image_number*Width*Height:0)) >
(Width*Height-1+(load_all_images?
image_number*Width*Height:0))) {
tmp2 = short_Image[Width*Height-1+
(load_all_images ?
image_number*Width*Height:0)];
}
else {
tmp2 = short_Image[ind+Width+(load_all_images?
image_number*Width*Height:0)]*
(1.0-(fx-ix)) +
short_Image[ind+Width+1+(load_all_images?
image_number*Width*Height:0)]*(fx-ix);
}
tmp3 = tmp1*(1.0-(fy-iy)) + tmp2*(fy-iy);
pix = (long int)(tmp3 + 0.5);
}
}
else { /* nearest neighbour */
fx = theEvent.xmotion.x*(Width-1.0)/(zWidth-1.0);
fy = theEvent.xmotion.y*(Height-1.0)/(zHeight-1.0);
ix = (int) floor(fx+0.5);
iy = (int) floor(fy+0.5);
ind = (iy * Width) + ix;
if (ind+1 > (Width*Height-1)) {
pix = (long int)short_Image[(Width*Height-1) +
(load_all_images?image_number*Width*Height:0)];
}
else {
pix = (long int)short_Image[ind +
(load_all_images?image_number*Width*Height:0)];
}
}
}
}
else {
xp = 0;
yp = 0;
pix = 0;
}
if ((file_format==ACR_NEMA_FORMAT) ||
(file_format==MINC_FORMAT) ||
(Input_Data_Type > SHORT_DATA) ) {
rw_pix = (float) (rw_offset + ((float)(pix-I_Min)*rw_scale));
/* calculate the real world coordinates of cursor if Minc */
if (file_format==MINC_FORMAT && RW_valid) {
if (X_reverse) { /* account for X flipped images */
fxp = (float)(zWidth-1-theEvent.xmotion.x)*(Width-1.0)/(zWidth-1.0);
}
else {
fxp = (float)(theEvent.xmotion.x)*(Width-1.0)/(zWidth-1.0);
}
if (Y_reverse) { /* account for Y flipped images */
fyp = (float)(zHeight-1-theEvent.xmotion.y)*(Height-1.0)/(zHeight-1.0);
}
else {
fyp = (float)(theEvent.xmotion.y)*(Height-1.0)/(zHeight-1.0);
}
/* in plane voxel space coordinates */
rw_coord[ndimensions-1] = minc_volume_info.start[ndimensions-1] +
fxp * minc_volume_info.step[ndimensions-1];
rw_coord[ndimensions-2] = minc_volume_info.start[ndimensions-2] +
fyp * minc_volume_info.step[ndimensions-2];
/* out of plane voxel space coordinates */
for (i=2; i<ndimensions; i++) {
rw_coord[ndimensions-(i+1)]= minc_volume_info.start[ndimensions-(i+1)] +
(float) slider_image[ndimensions-(i+1)] *
minc_volume_info.step[ndimensions-(i+1)];
}
/* Voxel space to Real World coordinate transformation */
tx=rw_coord[minc_x_dim];
ty=rw_coord[minc_y_dim];
tz=rw_coord[minc_z_dim];
rw_coord[minc_x_dim] = tx*minc_volume_info.direction_cosines[minc_x_dim][0] +
ty*minc_volume_info.direction_cosines[minc_y_dim][0] +
tz*minc_volume_info.direction_cosines[minc_z_dim][0];
rw_coord[minc_y_dim] = tx*minc_volume_info.direction_cosines[minc_x_dim][1] +
ty*minc_volume_info.direction_cosines[minc_y_dim][1] +
tz*minc_volume_info.direction_cosines[minc_z_dim][1];
rw_coord[minc_z_dim] = tx*minc_volume_info.direction_cosines[minc_x_dim][2] +
ty*minc_volume_info.direction_cosines[minc_y_dim][2] +
tz*minc_volume_info.direction_cosines[minc_z_dim][2];
/* command window message */
if (minc_t_dim>=0) {
if (minc_volume_info.start[minc_t_dim]==0 &&
minc_volume_info.step[minc_t_dim]==0) {
sprintf(pix_msg," RW x=%g, y=%g, z=%g, frame=%d Value=%g ",
rw_coord[minc_x_dim],
rw_coord[minc_y_dim],
rw_coord[minc_z_dim],
slider_image[minc_t_dim]+1,
rw_pix);
}
else {
sprintf(pix_msg," RW x=%g, y=%g, z=%g, t=%g Value=%g ",
rw_coord[minc_x_dim],
rw_coord[minc_y_dim],
rw_coord[minc_z_dim],
rw_coord[minc_t_dim],
rw_pix);
}
}
else {
sprintf(pix_msg," RW x=%g, y=%g, z=%g Value=%g ",
rw_coord[minc_x_dim],
rw_coord[minc_y_dim],
rw_coord[minc_z_dim],
rw_pix);
}
}
else {
if (num_images==1) {
if (Input_Data_Type==ULONG_DATA ||
Input_Data_Type==USHORT_DATA )
sprintf(pix_msg," pixel %d, %d = %u ",
xp, yp, (unsigned long) floor(rw_pix+0.5));
else if (Input_Data_Type==LONG_DATA)
sprintf(pix_msg," pixel %d, %d = %d ",
xp, yp, (long)floor(rw_pix+0.5));
else
sprintf(pix_msg," pixel %d, %d = %g ",
xp, yp, rw_pix);
}
else {
if (Input_Data_Type==ULONG_DATA ||
Input_Data_Type==USHORT_DATA )
sprintf(pix_msg," image %d, pixel %d, %d = %u ",
image_number, xp, yp, (unsigned long) floor(rw_pix+0.5));
else if (Input_Data_Type==LONG_DATA)
sprintf(pix_msg," image %d, pixel %d, %d = %d ",
image_number, xp, yp, (long) (floor)(rw_pix+0.5));
else {
sprintf(pix_msg," image %d, pixel %d, %d = %g ",
image_number, xp, yp, rw_pix);
}
}
}
}
else {
if (num_images==1) {
sprintf(pix_msg," pixel %d, %d = %d ",
xp, yp, pix);
}
else {
sprintf(pix_msg," image %d, pixel %d, %d = %d ",
xp, yp, pix);
}
}
/* display the command window position message */
XDrawImageString(theDisp,cmdW,theCGC,
CENTERX(ol_text_finfo,cmd_width/2,pix_msg),
(button_height+4)*2-8,pix_msg, strlen(pix_msg));
if (cmdW_Initial_State==IconicState) {
ml8=XTextWidth(ol_text_finfo,loc_msg,strlen(loc_msg))+4;
ml9=XTextWidth(ol_text_finfo,wl_msg,strlen(wl_msg))+4;
ml10=XTextWidth(ol_text_finfo,orient_msg,strlen(orient_msg))+4;
/* prepare the command window location message */
if (file_format==MINC_FORMAT) {
sprintf(loc_msg,"(%d,%d",xp,yp);
for (i=2; i<ndimensions; i++) {
sprintf(loc_msg,"%s,%d",loc_msg,slider_image[ndimensions-(i+1)]+1);
}
sprintf(loc_msg,"%s) = %g",loc_msg,rw_pix);
}
else if ((file_format==ACR_NEMA_FORMAT) ||
(Input_Data_Type > SHORT_DATA) ) {
if (num_images>1) {
if (Input_Data_Type==ULONG_DATA ||
Input_Data_Type==USHORT_DATA )
sprintf(loc_msg,"(%d,%d,%d) = %u",
xp,yp,image_number+1,
(unsigned long)floor(rw_pix+0.5));
else if (Input_Data_Type==LONG_DATA)
sprintf(loc_msg,"(%d,%d,%d) = %d",
xp,yp,image_number+1,
(long)floor(rw_pix+0.5));
else
sprintf(loc_msg,"(%d,%d,%d) = %g",
xp,yp,image_number+1,rw_pix);
}
else {
if (Input_Data_Type==ULONG_DATA ||
Input_Data_Type==USHORT_DATA )
sprintf(loc_msg,"(%d,%d) = %u",
xp,yp,(unsigned long) floor(rw_pix+0.5));
else if (Input_Data_Type==LONG_DATA)
sprintf(loc_msg,"(%d,%d) = %d",
xp,yp,(long) floor(rw_pix+0.5));
else
sprintf(loc_msg,"(%d,%d) = %g",
xp,yp,rw_pix);
}
}
else {
if (num_images>1) {
sprintf(loc_msg,"(%d,%d,%d) = %d",
xp,yp,image_number+1,pix);
}
else {
sprintf(loc_msg,"(%d,%d) = %d",xp,yp,pix);
}
}
/* clear are of window if needed */
if (ml8 > XTextWidth(ol_text_finfo,loc_msg,strlen(loc_msg))+4) {
XClearArea(theDisp, mainW, 0, zHeight,
zWidth,zHeight+info_height, False);
}
/* if we have valid MINC info display orientation information */
if (file_format==MINC_FORMAT && RW_valid ) {
/* screen x direction */
if (ndimensions-1==minc_x_dim) {
if (X_reverse)
strcpy(orient_msg,"R");
else
strcpy(orient_msg,"L");
}
else if (ndimensions-1==minc_y_dim) {
if (X_reverse)
strcpy(orient_msg,"A");
else
strcpy(orient_msg,"P");
}
else if (ndimensions-1==minc_z_dim) {
if (X_reverse)
strcpy(orient_msg,"S");
else
strcpy(orient_msg,"I");
}
else {
strcpy(orient_msg,"?");
}
/* screen y direction */
if (ndimensions-2==minc_x_dim) {
if (Y_reverse)
strcat(orient_msg,"-R");
else
strcat(orient_msg,"-L");
}
else if (ndimensions-2==minc_y_dim) {
if (Y_reverse)
strcat(orient_msg,"-A");
else
strcat(orient_msg,"-P");
}
else if (ndimensions-2==minc_z_dim) {
if (Y_reverse)
strcat(orient_msg,"-S");
else
strcat(orient_msg,"-I");
}
else {
strcat(orient_msg,"-?");
}
/* actually display the orientation message */
if (!(wl_display ||(theEvent.xmotion.state==Button2MotionMask))) {
if (ml10 > XTextWidth(ol_text_finfo,orient_msg,strlen(orient_msg))+4) {
XClearArea(theDisp, mainW, zWidth-ml10-4,
zHeight, zWidth, zHeight+info_height, False);
}
XDrawImageString(theDisp,mainW,theMGC,
zWidth-XTextWidth(ol_text_finfo, orient_msg,
strlen(orient_msg))-4,
zHeight+info_height-4,orient_msg,strlen(orient_msg));
}
}
/* prepare the command window window/level message */
sprintf(wl_msg,"%d W %d L %s",(Upper-Lower),(Upper+Lower)/2, orient_msg);
if (wl_display ||(theEvent.xmotion.state==Button2MotionMask)) {
if (ml9 > XTextWidth(ol_text_finfo,wl_msg,strlen(wl_msg))+4) {
XClearArea(theDisp, mainW, zWidth-ml9-4,
zHeight, zWidth, zHeight+info_height, False);
}
/* display the main window window/level message */
XDrawImageString(theDisp,mainW,theMGC,
zWidth-XTextWidth(ol_text_finfo,wl_msg,
strlen(wl_msg))-4,
zHeight+info_height-4,wl_msg,strlen(wl_msg));
}
/* display the main window location message */
XDrawImageString(theDisp,mainW,theMGC,4,
zHeight+info_height-4,loc_msg,strlen(loc_msg));
}
/* set the old x and y locations to the current values */
ox = theEvent.xmotion.x;
oy = theEvent.xmotion.y;
/* draw the roi box if active */
if (roi_active) {
draw_roi(roi_x1, roi_y1, roi_x2, roi_y2);
roi_x2 = ox < zWidth ? (ox>0 ? ox : 0) : zWidth-1;
roi_y2 = oy < zHeight ? (oy>0 ? oy : 0) : zHeight-1;
draw_roi(roi_x1, roi_y1, roi_x2, roi_y2);
}
}