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#include <iostream.h>
#include <math.h>
#include <qwidget.h>
#include <qpainter.h>
#include "render2d.h"
#include "chemdata.h"
#include "text.h"
#include "defs.h"
void Render2D::Select_mouseMoveEvent(QMouseEvent *e1) {
//bool update;
DPoint *prevhighlight = highlightpoint;
Drawable *prevhighlightobject = highlightobject;
// Create DPoint of current pointer position
DPoint *e = new DPoint;
DPoint *np = 0;
e->x = e1->x(); e->y = e1->y();
double dist, distobj, dx, dy;
// Get DPoint of nearest point
np = c->FindNearestPoint(e, dist);
// get Drawable of nearest object
Drawable *no = c->FindNearestObject(e, distobj);
//cout << "np = " << dist << " no = " << distobj;
//if (np == 0) cout << " (np = 0)";
//cout << endl;
// no buttons down
if ( (mouse1down == false) && (mouse3down == false) ) {
if (mode == MODE_SELECT_MULTIPLE_SELECTED) {
// check if near rotate or resize handle
if (DistanceBetween(resizeHandle, e1->pos()) < 4.0) {
setCursor(sizeFDiagCursor);
mode = MODE_SELECT_MULTIPLE_RESIZE;
return;
}
if (DistanceBetween(rotateHandle, e1->pos()) < 4.0) {
setCursor(rotatecursor);
mode = MODE_SELECT_MULTIPLE_ROTATE;
return;
}
// else, check if in selection box (for move)
if (selectionBox.contains( e1->pos() ))
setCursor(sizeAllCursor);
else
setCursor(arrowCursor);
return;
}
if (mode == MODE_SELECT_MULTIPLE_RESIZE) {
if (DistanceBetween(resizeHandle, e1->pos()) > 4.0) {
mode = MODE_SELECT_MULTIPLE_SELECTED;
if (selectionBox.contains( e1->pos() ))
setCursor(sizeAllCursor);
else
setCursor(arrowCursor);
return;
}
return; // do nothing if still on resize handle
}
if (mode == MODE_SELECT_MULTIPLE_ROTATE) {
if (DistanceBetween(rotateHandle, e1->pos()) > 4.0) {
mode = MODE_SELECT_MULTIPLE_SELECTED;
if (selectionBox.contains( e1->pos() ))
setCursor(sizeAllCursor);
else
setCursor(arrowCursor);
return;
}
return; // do nothing if still on resize handle
}
if (no != 0) {
// highlight text and symbol objects preferentially when MODE_SELECT...
if ( (no->Type() == TYPE_TEXT) || (no->Type() == TYPE_SYMBOL) ){
highlightpoint = 0;
highlightobject = no;
if ( (prevhighlightobject != highlightobject) &&
(prevhighlightobject != 0) )
prevhighlightobject->Highlight(false);
highlightobject->Highlight(true);
if (prevhighlightobject != highlightobject) repaint();
setCursor(sizeAllCursor);
// return since no need to check points
return;
}
// highlight object if object close enough and no point close
if ( (distobj < 6.0) && (dist >= 8.0) ) {
highlightpoint = 0;
highlightobject = no;
if (prevhighlightobject != 0) prevhighlightobject->Highlight(false);
highlightobject->Highlight(true);
if (prevhighlightobject != highlightobject) repaint();
setCursor(sizeAllCursor);
// return since no need to check points
return;
}
// unhighlight object if no object close
if (distobj >= 6.0) {
// Clear highlighted object
highlightobject = 0;
if (prevhighlightobject != 0) prevhighlightobject->Highlight(false);
if (prevhighlightobject != highlightobject) repaint();
// don't return; go on to check for points
}
// unhighlight object if point close
if (dist < 8.0) {
// Clear highlighted object
highlightobject = 0;
if (prevhighlightobject != 0) prevhighlightobject->Highlight(false);
if (prevhighlightobject != highlightobject) repaint();
// don't return; go on to check for points
}
}
if (np == 0) {
highlightpoint = 0;
highlightobject = 0;
if (prevhighlightobject != 0) {
prevhighlightobject->Highlight(false);
repaint();
}
setCursor(arrowCursor);
return;
}
if (np != 0) {
//cout << dist << " to (" << np->x << "," << np->y << ")" << endl;
if (dist < 8.0) {
highlightpoint = np;
if (prevhighlight != highlightpoint) repaint();
setCursor(sizeAllCursor);
return;
} else {
// Clear object, if any
if (prevhighlightobject != 0) {
prevhighlightobject->Highlight(false);
highlightobject = 0;
repaint();
}
// Clear highlighted point
highlightpoint = 0;
if (prevhighlight != highlightpoint) repaint();
setCursor(arrowCursor);
return;
}
}
return; // rest of function only if mouse button down
}
if ( ( mode == MODE_SELECT_MULTIPLE) && (mouse1down) ) {
drawBox(selectOrigin, selectPrev, QColor(255,255,255));
selectPrev = e1->pos();
c->NewSelectRect(QRect(selectOrigin, selectPrev), false);
repaint();
drawBox(selectOrigin, selectPrev, QColor(0,0,0));
}
if ( (mode == MODE_SELECT_RESIZE_MULTIPLE) && (mouse1down) ) {
//double dh, dw;
DPoint *dp1 = new DPoint( selectionBox.topLeft() );
// disallow moves to the left or above selection box
if ( (e->x < (dp1->x + 2.0) ) || (e->y < (dp1->y + 2.0) ) ) {
cout << "Warning!" << endl;
QPoint gin((int)prevpos->x, (int)prevpos->y), gout;
gout = mapToGlobal(gin);
cursor().setPos(gout);
return;
}
dx = dp1->distanceTo(e);
dy = dp1->distanceTo(prevpos);
//cout << "resize factor " << dx / dy << endl;
c->Resize(dp1, dx / dy);
selectionBox = c->selectionBox();
repaint();
}
if ( (mode == MODE_SELECT_ROTATE_MULTIPLE) && (mouse1down) ) {
DPoint *dp1 = new DPoint( rotateOrigin );
double da = getAngle( rotateOrigin, e1->pos() );
double db = prevangle - da;
if (db < -300.0) db += 360.0;
if (db > 300.0) db -= 360.0;
db = db * M_PI / 180.0;
//cout << db << endl;
prevangle = da;
c->Rotate(dp1, db);
selectionBox = c->selectionBox();
repaint();
}
if ( (mode == MODE_SELECT_MOVE_MULTIPLE) && (mouse1down) ) {
dx = e->x - prevpos->x; dy = e->y - prevpos->y;
//cout << "Move by " << dx << "," << dy << endl;
c->Move(dx, dy);
selectionBox.moveBy((int)dx, (int)dy);
repaint();
}
if ( (mode == MODE_SELECT_MOVE_OBJECT) && (mouse1down) ) {
dx = e->x - prevpos->x; dy = e->y - prevpos->y;
//cout << "Move by " << dx << "," << dy << endl;
c->Move(dx, dy);
selectionBox.moveBy((int)dx, (int)dy);
repaint();
}
if ( (mode == MODE_SELECT_MOVE_POINT) && (mouse1down) ) {
dx = e->x - prevpos->x; dy = e->y - prevpos->y;
//cout << "Move by " << dx << "," << dy << endl;
highlightpoint->x += dx;
highlightpoint->y += dy;
repaint();
}
}
// Get angle between -BA> and -BD> (Law of Cosines)
double Render2D::GetAngle(DPoint *a, DPoint *b, DPoint *d) {
double a1 = b->distanceTo(a);
double a2 = b->distanceTo(d);
double a3 = a->distanceTo(d);
double cos1 = (a2*a2 + a1*a1 - a3*a3) / (2*a1*a2);
return acos(cos1);
}
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