bool CTrack::Done(bool bSuccess)
{
Draw(false/*bOn*/);
if (m_pDrawProc && m_pAGDC)
{
int iToolCode = (bSuccess ? TOOLCODE_DONE : TOOLCODE_ABORT);
HDC hDC = m_pAGDC->GetHDC();
m_pDrawProc(hDC, false/*bOn*/, iToolCode, m_pData);
}
// return whether the symbol was only moved
return m_bMoveOnly;
}
void CTrack::Delta(int dx, int dy)
{
POINT ptOffset = {dx, dy};
CAGMatrix CombinedMatrix = m_Matrix * m_ViewToDeviceMatrix;
CombinedMatrix.Inverse().Transform(&ptOffset, 1, false);
m_bMoved = true;
Draw(false/*bOn*/);
m_Matrix.Translate(ptOffset.x, ptOffset.y);
if (m_pDrawProc && m_pAGDC)
{
HDC hDC = m_pAGDC->GetHDC();
m_pDrawProc(hDC, false/*bOn*/, TOOLCODE_UPDATE, m_pData);
}
Draw(true/*bOn*/);
}
void CTrack::Flip(bool fFlipX, bool fFlipY)
{
Draw(false/*bOn*/);
m_bMoveOnly = false;
RECT rect = m_Distort.Rect;
m_Matrix.Transform(rect);
double fcx = (double)(rect.left + rect.right) / 2;
double fcy = (double)(rect.top + rect.bottom) / 2;
double fsx = (fFlipX ? -1.0 : 1.0);
double fsy = (fFlipY ? -1.0 : 1.0);
m_Matrix.Scale(fsx, fsy, fcx, fcy);
if (m_pDrawProc && m_pAGDC)
{
HDC hDC = m_pAGDC->GetHDC();
m_pDrawProc(hDC, false/*bOn*/, TOOLCODE_UPDATE, m_pData);
}
Draw(true/*bOn*/);
}
bool CTrack::Move(int x, int y)
{
if (m_bDisabled)
return false;
if (!m_iHandleGrabbed)
return false;
// Prevent any accidental moves on the first click
if (m_iHandleGrabbed == H_MOVE && !m_bMoved)
{
#define CLOSENESS 10 // pixels
int dx = m_iLastDownX - x;
int dy = m_iLastDownY - y;
if (dx >= -CLOSENESS && dx <= CLOSENESS && dy >= -CLOSENESS && dy <= CLOSENESS)
return false;
}
if (m_bShear)
ConstrainXY(&x, &y, true/*bButtonDown*/, false/*bInit*/, m_bShear/*bActive*/);
x = bound(x, m_BoundRectScreen.left, m_BoundRectScreen.right);
y = bound(y, m_BoundRectScreen.top, m_BoundRectScreen.bottom);
CPoint pt(x, y);
m_ViewToDeviceMatrix.Inverse().Transform(pt);
x = pt.x;
y = pt.y;
if (x == m_iLastX && y == m_iLastY)
return false;
m_bMoved = true;
Draw(false/*bOn*/);
switch (m_iHandleGrabbed)
{
case H_UL:
{
m_Grid.Snap(pt);
m_bMoveOnly = false;
if (m_bExclusive && (m_iWhatCanDo & TR_ROTATE))
Mode(m_iWhatCanDo & ~TR_ROTATE, false/*fDisplay*/);
if (m_bShear)
Shear(pt.x, pt.y, m_Distort.Rect.left, m_Distort.Rect.top, m_bConstrainX, m_bConstrainY);
else
Scale(pt.x, pt.y, m_Distort.Rect.left, m_Distort.Rect.top, m_Distort.Rect.right, m_Distort.Rect.bottom, m_bConstrainAspect ^ CONTROL);
break;
}
case H_UR:
{
m_Grid.Snap(pt);
m_bMoveOnly = false;
if (m_bExclusive && (m_iWhatCanDo & TR_ROTATE))
Mode(m_iWhatCanDo & ~TR_ROTATE, false/*fDisplay*/);
if (m_bShear)
Shear(pt.x, pt.y, m_Distort.Rect.right, m_Distort.Rect.top, m_bConstrainX, m_bConstrainY);
else
Scale(pt.x, pt.y, m_Distort.Rect.right, m_Distort.Rect.top, m_Distort.Rect.left, m_Distort.Rect.bottom, m_bConstrainAspect ^ CONTROL);
break;
}
case H_LR:
{
m_Grid.Snap(pt);
m_bMoveOnly = false;
if (m_bExclusive && (m_iWhatCanDo & TR_ROTATE))
Mode(m_iWhatCanDo & ~TR_ROTATE, false/*fDisplay*/);
if (m_bShear)
Shear(pt.x, pt.y, m_Distort.Rect.right, m_Distort.Rect.bottom, m_bConstrainX, m_bConstrainY);
else
Scale(pt.x, pt.y, m_Distort.Rect.right, m_Distort.Rect.bottom, m_Distort.Rect.left, m_Distort.Rect.top, m_bConstrainAspect ^ CONTROL);
break;
}
case H_LL:
{
m_Grid.Snap(pt);
m_bMoveOnly = false;
if (m_bExclusive && (m_iWhatCanDo & TR_ROTATE))
Mode(m_iWhatCanDo & ~TR_ROTATE, false/*fDisplay*/);
if (m_bShear)
Shear(pt.x, pt.y, m_Distort.Rect.left, m_Distort.Rect.bottom, m_bConstrainX, m_bConstrainY);
else
Scale(pt.x, pt.y, m_Distort.Rect.left, m_Distort.Rect.bottom, m_Distort.Rect.right, m_Distort.Rect.top, m_bConstrainAspect ^ CONTROL);
break;
}
case H_TOP:
{
m_Grid.Snap(pt);
m_bMoveOnly = false;
if (m_bExclusive && (m_iWhatCanDo & TR_ROTATE))
Mode(m_iWhatCanDo & ~TR_ROTATE, false/*fDisplay*/);
int midx = (m_Distort.Rect.left + m_Distort.Rect.right)/2;
if (m_bShear)
Shear(pt.x, pt.y, midx, m_Distort.Rect.top, m_bConstrainX, m_bConstrainY);
else
{
CPoint ptMid(midx, m_Distort.Rect.top);
long dummy;
m_Matrix.Transform(ptMid, pt.x, dummy);
Scale(pt.x, pt.y, midx, m_Distort.Rect.top, midx, m_Distort.Rect.bottom, false/*bConstrainAspect*/);
}
break;
}
case H_RIGHT:
{
m_Grid.Snap(pt);
m_bMoveOnly = false;
if (m_bExclusive && (m_iWhatCanDo & TR_ROTATE))
Mode(m_iWhatCanDo & ~TR_ROTATE, false/*fDisplay*/);
int midy = (m_Distort.Rect.top + m_Distort.Rect.bottom)/2;
if (m_bShear)
Shear(pt.x, pt.y, m_Distort.Rect.right, midy, m_bConstrainX, m_bConstrainY);
else
{
CPoint ptMid(m_Distort.Rect.right, midy);
long dummy;
m_Matrix.Transform(ptMid, dummy, pt.y);
Scale(pt.x, pt.y, m_Distort.Rect.right, midy, m_Distort.Rect.left, midy, false/*bConstrainAspect*/);
}
break;
}
case H_BOTTOM:
{
m_Grid.Snap(pt);
m_bMoveOnly = false;
if (m_bExclusive && (m_iWhatCanDo & TR_ROTATE))
Mode(m_iWhatCanDo & ~TR_ROTATE, false/*fDisplay*/);
int midx = (m_Distort.Rect.left + m_Distort.Rect.right)/2;
if (m_bShear)
Shear(pt.x, pt.y, midx, m_Distort.Rect.bottom, m_bConstrainX, m_bConstrainY);
else
{
CPoint ptMid(midx, m_Distort.Rect.bottom);
long dummy;
m_Matrix.Transform(ptMid, pt.x, dummy);
Scale(pt.x, pt.y, midx, m_Distort.Rect.bottom, midx, m_Distort.Rect.top, false/*bConstrainAspect*/);
}
break;
}
case H_LEFT:
{
m_Grid.Snap(pt);
m_bMoveOnly = false;
if (m_bExclusive && (m_iWhatCanDo & TR_ROTATE))
Mode(m_iWhatCanDo & ~TR_ROTATE, false/*fDisplay*/);
int midy = (m_Distort.Rect.top + m_Distort.Rect.bottom)/2;
if (m_bShear)
Shear(pt.x, pt.y, m_Distort.Rect.left, midy, m_bConstrainX, m_bConstrainY);
else
{
CPoint ptMid(m_Distort.Rect.left, midy);
long dummy;
m_Matrix.Transform(ptMid, dummy, pt.y);
Scale(pt.x, pt.y, m_Distort.Rect.left, midy, m_Distort.Rect.right, midy, false/*bConstrainAspect*/);
}
break;
}
case H_CENTER:
{
// transform points to transformed position
m_Matrix.Transform(m_ptCenter);
m_Matrix.Transform(m_ptRotate);
int dx = pt.x - m_ptCenter.x;
int dy = pt.y - m_ptCenter.y;
m_ptRotate.x += dx;
m_ptRotate.y += dy;
m_ptCenter = pt;
// transform points back to untransformed position
m_Matrix.Inverse().Transform(m_ptCenter);
m_Matrix.Inverse().Transform(m_ptRotate);
break;
}
case H_CORNER_UL:
case H_CORNER_UR:
case H_CORNER_LR:
case H_CORNER_LL:
{
m_Grid.Snap(pt);
m_bMoveOnly = false;
if (m_bExclusive && (m_iWhatCanDo & TR_ROTATE))
Mode(m_iWhatCanDo & ~TR_ROTATE, false/*fDisplay*/);
// transform the new point back to its untransformed position
CPoint ptTemp = pt;
m_Matrix.Inverse().Transform(ptTemp);
int i = m_iHandleGrabbed - H_CORNER_UL;
m_Distort.p[i] = ptTemp;
// Update the m_Distort.Rect rectangle
m_Distort.Rect.left = min(min(min(m_Distort.p[0].x, m_Distort.p[1].x), m_Distort.p[2].x), m_Distort.p[3].x);
m_Distort.Rect.right = max(max(max(m_Distort.p[0].x, m_Distort.p[1].x), m_Distort.p[2].x), m_Distort.p[3].x);
m_Distort.Rect.top = min(min(min(m_Distort.p[0].y, m_Distort.p[1].y), m_Distort.p[2].y), m_Distort.p[3].y);
m_Distort.Rect.bottom = max(max(max(m_Distort.p[0].y, m_Distort.p[1].y), m_Distort.p[2].y), m_Distort.p[3].y);
break;
}
case H_ROTATE:
{
m_bMoveOnly = false;
if (m_bExclusive && (m_iWhatCanDo & TR_SIZE))
Mode(m_iWhatCanDo & ~TR_SIZE, false/*fDisplay*/);
// transform points to transformed position
Rotate(pt.x, pt.y, m_iStartRotateX, m_iStartRotateY);
m_ptRotate = pt;
// transform points back to untransformed position
m_Matrix.Inverse().Transform(m_ptRotate);
break;
}
case H_MOVE:
{
// Calculate how far we SHOULD move
CPoint delta1(pt.x - m_iLastX, pt.y - m_iLastY);
// Calculate where we are right now
CRect rect = m_Distort.Rect;
m_Matrix.Transform(rect);
// Calculate the new top-left point
CPoint ptNewTL(rect.left + delta1.x, rect.top + delta1.y);
// Snap it to the grid
m_Grid.Snap(ptNewTL);
if (m_iWhatCanDo & TR_BOUNDTOSYMBOL)
{
int delta;
delta = ptNewTL.x - m_BoundRect.left;
if (delta < 0)
ptNewTL.x -= delta;
delta = ptNewTL.y - m_BoundRect.top;
if (delta < 0)
ptNewTL.y -= delta;
delta = (ptNewTL.x + rect.Width()) - m_BoundRect.right;
if (delta > 0)
ptNewTL.x -= delta;
delta = (ptNewTL.y + rect.Height()) - m_BoundRect.bottom;
if (delta > 0)
ptNewTL.y -= delta;
}
// Calculate how far we WILL move
CPoint delta2(ptNewTL.x - rect.left, ptNewTL.y - rect.top);
// Adjust the point for the next time around
x -= (delta1.x - delta2.x);
y -= (delta1.y - delta2.y);
m_Matrix.Translate(delta2.x, delta2.y);
break;
}
default:
return false;
}
if (m_pDrawProc && m_pAGDC)
{
HDC hDC = m_pAGDC->GetHDC();
m_pDrawProc(hDC, false/*bOn*/, TOOLCODE_UPDATE, m_pData);
}
Draw(true/*bOn*/);
m_iLastX = x;
m_iLastY = y;
return true;
}
