void ExplainCanvas::SaveAsImage(const wxString &fileName, wxBitmapType imageType)
{
if (GetDiagram()->GetCount() == 0)
{
wxMessageBox(_("Nothing to be saved!"), _("Save As an image"), wxOK | wxICON_INFORMATION);
return;
}
int width = 0, height = 0;
GetVirtualSize(&width, &height);
/*
* Create the bitmap from the Explain window
*/
wxMemoryDC memDC;
wxBitmap tempBitmap(width, height);
memDC.SelectObject(tempBitmap);
memDC.Clear();
// Draw the diagram on the bitmap (Memory Device Context)
GetDiagram()->Redraw(memDC);
memDC.SelectObject(wxNullBitmap);
if (!tempBitmap.SaveFile(fileName, imageType))
{
wxLogError(_("Could not write file \"%s\": error code %d."), fileName.c_str(), wxSysErrorCode());
}
}
void wxShapeCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxPaintDC dc(this);
PrepareDC(dc);
dc.SetBackground(wxBrush(GetBackgroundColour(), wxSOLID));
dc.Clear();
if (GetDiagram())
GetDiagram()->Redraw(dc);
}
void csCanvas::OnEndDragLeft(double x, double y, int WXUNUSED(keys))
{
ReleaseMouse();
wxClientDC dc(this);
PrepareDC(dc);
// Select all images within the rectangle
float min_x, max_x, min_y, max_y;
min_x = wxMin(x, sg_initialX);
max_x = wxMax(x, sg_initialX);
min_y = wxMin(y, sg_initialY);
max_y = wxMax(y, sg_initialY);
wxObjectList::compatibility_iterator node = GetDiagram()->GetShapeList()->GetFirst();
while (node)
{
wxShape *shape = (wxShape *)node->GetData();
if (shape->GetParent() == NULL && !shape->IsKindOf(CLASSINFO(wxControlPoint)))
{
float image_x = shape->GetX();
float image_y = shape->GetY();
if (image_x >= min_x && image_x <= max_x &&
image_y >= min_y && image_y <= max_y)
{
shape->Select(true, &dc);
GetView()->SelectShape(shape, true);
}
}
node = node->GetNext();
}
}
//*******************************************************************************
int CBCGPDiagramView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;
m_pWndDiagramCtrl = CreateDiagram ();
if (m_pWndDiagramCtrl == NULL)
{
TRACE0("CBCGPDiagramView::OnCreate: Diagram control is not created\n");
return -1;
}
ASSERT_VALID (m_pWndDiagramCtrl);
ASSERT (m_pWndDiagramCtrl->IsKindOf (RUNTIME_CLASS (CBCGPDiagramVisualContainerCtrl)));
if (!m_pWndDiagramCtrl->Create (CBCGPRect(), this, ID_Diagram_CTRL))
{
TRACE0("CBCGPDiagramView::OnCreate: cannot create Diagram control\n");
return -1;
}
CBCGPDiagramVisualContainer* pDiagram = GetDiagram();
if (pDiagram != NULL)
{
pDiagram->EnableScrollBars();
}
return 0;
}
ExplainCanvas::ExplainCanvas(wxWindow *parent)
: wxShapeCanvas(parent)
{
SetDiagram(new wxDiagram);
GetDiagram()->SetCanvas(this);
SetBackgroundColour(*wxWHITE);
popup = NULL;
}
void wxShapeCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
{
#if OGL_USE_BUFFERED_PAINT
RecreateBuffer();
wxBufferedPaintDC dc(this, m_bufferBitmap);
#else
wxPaintDC dc(this);
#endif
PrepareDC(dc);
DrawBackground(dc, true);
if (GetDiagram())
GetDiagram()->Redraw(dc);
// Necessary or it unscales again if there's a zoom level
dc.SetUserScale(1.0, 1.0);
}
void wxShapeCanvas::OnMouseEvent(wxMouseEvent& event)
{
wxClientDC dc(this);
PrepareDC(dc);
wxPoint logPos(event.GetLogicalPosition(dc));
double x, y;
x = (double) logPos.x;
y = (double) logPos.y;
int keys = 0;
if (event.ShiftDown())
keys = keys | KEY_SHIFT;
if (event.ControlDown())
keys = keys | KEY_CTRL;
bool dragging = event.Dragging();
// Check if we're within the tolerance for mouse movements.
// If we're very close to the position we started dragging
// from, this may not be an intentional drag at all.
if (dragging)
{
int dx = abs(dc.LogicalToDeviceX((long) (x - m_firstDragX)));
int dy = abs(dc.LogicalToDeviceY((long) (y - m_firstDragY)));
if (m_checkTolerance && (dx <= GetDiagram()->GetMouseTolerance()) && (dy <= GetDiagram()->GetMouseTolerance()))
{
return;
}
else
// If we've ignored the tolerance once, then ALWAYS ignore
// tolerance in this drag, even if we come back within
// the tolerance range.
m_checkTolerance = false;
}
// Dragging - note that the effect of dragging is left entirely up
// to the object, so no movement is done unless explicitly done by
// object.
if (dragging && m_draggedShape && m_dragState == StartDraggingLeft)
{
m_dragState = ContinueDraggingLeft;
// If the object isn't m_draggable, transfer message to canvas
if (m_draggedShape->Draggable())
m_draggedShape->GetEventHandler()->OnBeginDragLeft((double)x, (double)y, keys, m_draggedAttachment);
else
{
m_draggedShape = NULL;
OnBeginDragLeft((double)x, (double)y, keys);
}
m_oldDragX = x; m_oldDragY = y;
}
else if (dragging && m_draggedShape && m_dragState == ContinueDraggingLeft)
{
// Continue dragging
m_draggedShape->GetEventHandler()->OnDragLeft(false, m_oldDragX, m_oldDragY, keys, m_draggedAttachment);
m_draggedShape->GetEventHandler()->OnDragLeft(true, (double)x, (double)y, keys, m_draggedAttachment);
m_oldDragX = x; m_oldDragY = y;
}
else if (event.LeftUp() && m_draggedShape && m_dragState == ContinueDraggingLeft)
{
m_dragState = NoDragging;
m_checkTolerance = true;
m_draggedShape->GetEventHandler()->OnDragLeft(false, m_oldDragX, m_oldDragY, keys, m_draggedAttachment);
m_draggedShape->GetEventHandler()->OnEndDragLeft((double)x, (double)y, keys, m_draggedAttachment);
m_draggedShape = NULL;
}
else if (dragging && m_draggedShape && m_dragState == StartDraggingRight)
{
m_dragState = ContinueDraggingRight;
if (m_draggedShape->Draggable())
m_draggedShape->GetEventHandler()->OnBeginDragRight((double)x, (double)y, keys, m_draggedAttachment);
else
{
m_draggedShape = NULL;
OnBeginDragRight((double)x, (double)y, keys);
}
m_oldDragX = x; m_oldDragY = y;
}
else if (dragging && m_draggedShape && m_dragState == ContinueDraggingRight)
{
// Continue dragging
m_draggedShape->GetEventHandler()->OnDragRight(false, m_oldDragX, m_oldDragY, keys, m_draggedAttachment);
m_draggedShape->GetEventHandler()->OnDragRight(true, (double)x, (double)y, keys, m_draggedAttachment);
m_oldDragX = x; m_oldDragY = y;
}
else if (event.RightUp() && m_draggedShape && m_dragState == ContinueDraggingRight)
{
m_dragState = NoDragging;
m_checkTolerance = true;
m_draggedShape->GetEventHandler()->OnDragRight(false, m_oldDragX, m_oldDragY, keys, m_draggedAttachment);
m_draggedShape->GetEventHandler()->OnEndDragRight((double)x, (double)y, keys, m_draggedAttachment);
m_draggedShape = NULL;
}
// All following events sent to canvas, not object
else if (dragging && !m_draggedShape && m_dragState == StartDraggingLeft)
{
m_dragState = ContinueDraggingLeft;
OnBeginDragLeft((double)x, (double)y, keys);
m_oldDragX = x; m_oldDragY = y;
}
else if (dragging && !m_draggedShape && m_dragState == ContinueDraggingLeft)
{
// Continue dragging
OnDragLeft(false, m_oldDragX, m_oldDragY, keys);
OnDragLeft(true, (double)x, (double)y, keys);
m_oldDragX = x; m_oldDragY = y;
}
else if (event.LeftUp() && !m_draggedShape && m_dragState == ContinueDraggingLeft)
{
m_dragState = NoDragging;
m_checkTolerance = true;
OnDragLeft(false, m_oldDragX, m_oldDragY, keys);
OnEndDragLeft((double)x, (double)y, keys);
m_draggedShape = NULL;
}
else if (dragging && !m_draggedShape && m_dragState == StartDraggingRight)
{
m_dragState = ContinueDraggingRight;
OnBeginDragRight((double)x, (double)y, keys);
m_oldDragX = x; m_oldDragY = y;
}
else if (dragging && !m_draggedShape && m_dragState == ContinueDraggingRight)
{
// Continue dragging
OnDragRight(false, m_oldDragX, m_oldDragY, keys);
OnDragRight(true, (double)x, (double)y, keys);
m_oldDragX = x; m_oldDragY = y;
}
else if (event.RightUp() && !m_draggedShape && m_dragState == ContinueDraggingRight)
{
m_dragState = NoDragging;
m_checkTolerance = true;
OnDragRight(false, m_oldDragX, m_oldDragY, keys);
OnEndDragRight((double)x, (double)y, keys);
m_draggedShape = NULL;
}
// Non-dragging events
else if (event.IsButton())
{
m_checkTolerance = true;
// Find the nearest object
int attachment = 0;
wxShape *nearest_object = FindShape(x, y, &attachment);
if (nearest_object) // Object event
{
if (event.LeftDown())
{
m_draggedShape = nearest_object;
m_draggedAttachment = attachment;
m_dragState = StartDraggingLeft;
m_firstDragX = x;
m_firstDragY = y;
}
else if (event.LeftUp())
{
// N.B. Only register a click if the same object was
// identified for down *and* up.
if (nearest_object == m_draggedShape)
nearest_object->GetEventHandler()->OnLeftClick((double)x, (double)y, keys, attachment);
m_draggedShape = NULL;
m_dragState = NoDragging;
}
else if (event.LeftDClick())
{
nearest_object->GetEventHandler()->OnLeftDoubleClick((double)x, (double)y, keys, attachment);
m_draggedShape = NULL;
m_dragState = NoDragging;
}
else if (event.RightDown())
{
m_draggedShape = nearest_object;
m_draggedAttachment = attachment;
m_dragState = StartDraggingRight;
m_firstDragX = x;
m_firstDragY = y;
}
else if (event.RightUp())
{
if (nearest_object == m_draggedShape)
nearest_object->GetEventHandler()->OnRightClick((double)x, (double)y, keys, attachment);
m_draggedShape = NULL;
m_dragState = NoDragging;
}
}
else // Canvas event (no nearest object)
{
if (event.LeftDown())
{
m_draggedShape = NULL;
m_dragState = StartDraggingLeft;
m_firstDragX = x;
m_firstDragY = y;
}
else if (event.LeftUp())
{
OnLeftClick((double)x, (double)y, keys);
m_draggedShape = NULL;
m_dragState = NoDragging;
}
else if (event.RightDown())
{
m_draggedShape = NULL;
m_dragState = StartDraggingRight;
m_firstDragX = x;
m_firstDragY = y;
}
else if (event.RightUp())
{
OnRightClick((double)x, (double)y, keys);
m_draggedShape = NULL;
m_dragState = NoDragging;
}
}
}
}
void wxShapeCanvas::Snap(double *x, double *y)
{ GetDiagram()->Snap(x, y); }
void wxShapeCanvas::Redraw(wxDC& dc)
{ GetDiagram()->Redraw(dc); }
bool wxShapeCanvas::GetQuickEditMode()
{ return GetDiagram()->GetQuickEditMode(); }
void wxShapeCanvas::RemoveShape(wxShape *object)
{ GetDiagram()->RemoveShape(object); }
void wxShapeCanvas::InsertShape(wxShape *object)
{ GetDiagram()->InsertShape(object); }
void wxShapeCanvas::AddShape(wxShape *object, wxShape *addAfter)
{ GetDiagram()->AddShape(object, addAfter); }
wxShape *wxShapeCanvas::FindShape(double x, double y, int *attachment, wxClassInfo *info, wxShape *notObject, wxClassInfo *notinfo)
//wxShape *wxShapeCanvas::FindShape(double x, double y, int *attachment, wxClassInfo *info, wxShape *notObject)
{
double nearest = 100000.0;
int nearest_attachment = 0;
wxShape *nearest_object = NULL;
// Go backward through the object list, since we want:
// (a) to have the control points drawn LAST to overlay
// the other objects
// (b) to find the control points FIRST if they exist
wxObjectList::compatibility_iterator current = GetDiagram()->GetShapeList()->GetLast();
while (current)
{
wxShape *object = (wxShape *)current->GetData();
double dist;
int temp_attachment;
// First pass for lines, which might be inside a container, so we
// want lines to take priority over containers. This first loop
// could fail if we clickout side a line, so then we'll
// try other shapes.
if (object->IsShown() &&
object->IsKindOf(CLASSINFO(wxLineShape)) &&
object->HitTest(x, y, &temp_attachment, &dist) &&
((info == NULL) || object->IsKindOf(info)) &&
((notinfo == NULL) || !object->IsKindOf(notinfo)) &&
(!notObject || !notObject->HasDescendant(object)))
{
// A line is trickier to spot than a normal object.
// For a line, since it's the diagonal of the box
// we use for the hit test, we may have several
// lines in the box and therefore we need to be able
// to specify the nearest point to the centre of the line
// as our hit criterion, to give the user some room for
// manouevre.
if (dist < nearest)
{
nearest = dist;
nearest_object = object;
nearest_attachment = temp_attachment;
}
}
if (current)
current = current->GetPrevious();
}
current = GetDiagram()->GetShapeList()->GetLast();
while (current)
{
wxShape *object = (wxShape *)current->GetData();
double dist;
int temp_attachment;
// On second pass, only ever consider non-composites or divisions. If children want to pass
// up control to the composite, that's up to them.
if (object->IsShown() && (object->IsKindOf(CLASSINFO(wxDivisionShape)) || !object->IsKindOf(CLASSINFO(wxCompositeShape)))
&& object->HitTest(x, y, &temp_attachment, &dist) && ((info == NULL) || object->IsKindOf(info)) &&
(!notObject || !notObject->HasDescendant(object)))
{
if (!object->IsKindOf(CLASSINFO(wxLineShape)))
{
// If we've hit a container, and we have already found a line in the
// first pass, then ignore the container in case the line is in the container.
// Check for division in case line straddles divisions (i.e. is not wholly contained).
if (!nearest_object || !(object->IsKindOf(CLASSINFO(wxDivisionShape)) || WhollyContains(object, nearest_object)))
{
nearest_object = object;
nearest_attachment = temp_attachment;
current = GetDiagram()->GetShapeList()->GetFirst()->GetPrevious(); // finish loop
}
}
}
if (current)
current = current->GetPrevious();
}
*attachment = nearest_attachment;
return nearest_object;
}
void ExplainCanvas::SetExplainString(const wxString &str)
{
Clear();
ExplainShape *last = 0;
int maxLevel = 0;
wxStringTokenizer lines(str, wxT("\n"));
while (lines.HasMoreTokens())
{
wxString tmp = lines.GetNextToken();
wxString line = tmp.Strip(wxString::both);
int braceCount = 0;
do
{
const wxChar *cp = line.c_str();
while (*cp)
{
if (*cp == '(')
braceCount++;
else if (*cp == ')')
braceCount--;
cp++;
}
if (braceCount > 0)
{
wxString tmp = lines.GetNextToken();
line += wxT(" ") + tmp.Strip(wxString::both);
braceCount = 0;
}
else
break;
}
while (lines.HasMoreTokens());
long level = (tmp.Length() - line.Length() + 4) / 6;
if (last)
{
if (level)
{
if (line.Left(4) == wxT("-> "))
line = line.Mid(4);
else
{
last->SetCondition(line);
continue;
}
}
while (last && level <= last->GetLevel())
last = last->GetUpper();
}
ExplainShape *s = ExplainShape::Create(level, last, line);
if (!s)
continue;
s->SetCanvas(this);
InsertShape(s);
s->Show(true);
if (level > maxLevel)
maxLevel = level;
if (!last)
rootShape = s;
last = s;
}
int x0 = (int)(rootShape->GetWidth() * 3);
int y0 = (int)(rootShape->GetHeight() * 3 / 2);
int xoffs = (int)(rootShape->GetWidth() * 3);
int yoffs = (int)(rootShape->GetHeight() * 5 / 4);
wxNode *current = GetDiagram()->GetShapeList()->GetFirst();
while (current)
{
ExplainShape *s = (ExplainShape *)current->GetData();
if (!s->totalShapes)
s->totalShapes = 1;
if (s->GetUpper())
s->GetUpper()->totalShapes += s->totalShapes;
current = current->GetNext();
}
current = GetDiagram()->GetShapeList()->GetLast();
while (current)
{
ExplainShape *s = (ExplainShape *)current->GetData();
s->SetX(y0 + (maxLevel - s->GetLevel()) * xoffs);
ExplainShape *upper = s->GetUpper();
if (upper)
{
s->SetY(upper->GetY() + upper->usedShapes * yoffs);
upper->usedShapes += s->totalShapes;
wxLineShape *l = new ExplainLine(s, upper);
l->Show(true);
AddShape(l);
}
else
{
s->SetY(y0);
}
current = current->GetPrevious();
}
#define PIXPERUNIT 20
int w = (maxLevel * xoffs + x0 * 2 + PIXPERUNIT - 1) / PIXPERUNIT;
int h = (rootShape->totalShapes * yoffs + y0 * 2 + PIXPERUNIT - 1) / PIXPERUNIT;
SetScrollbars(PIXPERUNIT, PIXPERUNIT, w, h);
}
void ExplainCanvas::Clear()
{
GetDiagram()->DeleteAllShapes();
}
