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view.cpp
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C/C++ Source or Header
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2001-10-30
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9KB
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339 lines
/////////////////////////////////////////////////////////////////////////////
// Name: view.cpp
// Purpose: Implements view functionality in OGLEdit
// Author: Julian Smart
// Modified by:
// Created: 12/07/98
// RCS-ID: $Id: view.cpp,v 1.3 2001/10/30 13:28:45 GT Exp $
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
// #pragma implementation
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif
#include <wx/colordlg.h>
#if !wxUSE_DOC_VIEW_ARCHITECTURE
#error You must set wxUSE_DOC_VIEW_ARCHITECTURE to 1 in wx_setup.h!
#endif
#include "ogledit.h"
#include "doc.h"
#include "view.h"
#include "palette.h"
IMPLEMENT_DYNAMIC_CLASS(DiagramView, wxView)
BEGIN_EVENT_TABLE(DiagramView, wxView)
EVT_MENU(OGLEDIT_CUT, DiagramView::OnCut)
EVT_MENU(OGLEDIT_CHANGE_BACKGROUND_COLOUR, DiagramView::OnChangeBackgroundColour)
EVT_MENU(OGLEDIT_EDIT_LABEL, DiagramView::OnEditLabel)
END_EVENT_TABLE()
// What to do when a view is created. Creates actual
// windows for displaying the view.
bool DiagramView::OnCreate(wxDocument *doc, long flags)
{
frame = GetMainFrame();
canvas = GetMainFrame()->canvas;
canvas->view = this;
SetFrame(frame);
Activate(TRUE);
// Initialize the edit menu Undo and Redo items
doc->GetCommandProcessor()->SetEditMenu(((MyFrame *)frame)->editMenu);
doc->GetCommandProcessor()->Initialize();
wxShapeCanvas *shapeCanvas = (wxShapeCanvas *)canvas;
DiagramDocument *diagramDoc = (DiagramDocument *)doc;
shapeCanvas->SetDiagram(diagramDoc->GetDiagram());
diagramDoc->GetDiagram()->SetCanvas(shapeCanvas);
return TRUE;
}
#define CENTER FALSE // Place the drawing to the center of the page
// Sneakily gets used for default print/preview
// as well as drawing on the screen.
void DiagramView::OnDraw(wxDC *dc)
{
/* You might use THIS code if you were scaling
* graphics of known size to fit on the page.
*/
int w, h;
// We need to adjust for the graphic size, a formula will be added
float maxX = 900;
float maxY = 700;
// A better way of find the maxium values would be to search through
// the linked list
// Let's have at least 10 device units margin
float marginX = 10;
float marginY = 10;
// Add the margin to the graphic size
maxX += (2 * marginX);
maxY += (2 * marginY);
// Get the size of the DC in pixels
dc->GetSize (&w, &h);
// Calculate a suitable scaling factor
float scaleX = (float) (w / maxX);
float scaleY = (float) (h / maxY);
// Use x or y scaling factor, whichever fits on the DC
float actualScale = wxMin (scaleX, scaleY);
float posX, posY;
// Calculate the position on the DC for centring the graphic
if (CENTER == TRUE) // center the drawing
{
posX = (float) ((w - (200 * actualScale)) / 2.0);
posY = (float) ((h - (200 * actualScale)) / 2.0);
}
else // Use defined presets
{
posX = 10;
posY = 35;
}
// Set the scale and origin
dc->SetUserScale (actualScale, actualScale);
dc->SetDeviceOrigin ((long) posX, (long) posY);
// This part was added to preform the print preview and printing functions
dc->BeginDrawing(); // Allows optimization of drawing code under MS Windows.
wxDiagram *diagram_p=((DiagramDocument*)GetDocument())->GetDiagram(); // Get the current diagram
if (diagram_p->GetShapeList())
{
wxCursor *old_cursor = NULL;
wxNode *current = diagram_p->GetShapeList()->First();
while (current) // Loop through the entire list of shapes
{
wxShape *object = (wxShape *)current->Data();
if (!object->GetParent())
{
object->Draw(* dc); // Draw the shape onto our printing dc
}
current = current->Next(); // Procede to the next shape in the list
}
}
dc->EndDrawing(); // Allows optimization of drawing code under MS Windows.
}
void DiagramView::OnUpdate(wxView *sender, wxObject *hint)
{
if (canvas)
canvas->Refresh();
}
// Clean up windows used for displaying the view.
bool DiagramView::OnClose(bool deleteWindow)
{
if (!GetDocument()->Close())
return FALSE;
DiagramDocument *diagramDoc = (DiagramDocument *)GetDocument();
diagramDoc->GetDiagram()->SetCanvas(NULL);
canvas->Clear();
canvas->SetDiagram(NULL);
canvas->view = NULL;
canvas = NULL;
wxString s = wxTheApp->GetAppName();
if (frame)
frame->SetTitle(s);
SetFrame(NULL);
Activate(FALSE);
return TRUE;
}
wxShape *DiagramView::FindSelectedShape(void)
{
DiagramDocument *doc = (DiagramDocument *)GetDocument();
wxShape *theShape = NULL;
wxNode *node = doc->GetDiagram()->GetShapeList()->First();
while (node)
{
wxShape *eachShape = (wxShape *)node->Data();
if ((eachShape->GetParent() == NULL) && eachShape->Selected())
{
theShape = eachShape;
node = NULL;
}
else node = node->Next();
}
return theShape;
}
void DiagramView::OnCut(wxCommandEvent& event)
{
DiagramDocument *doc = (DiagramDocument *)GetDocument();
wxShape *theShape = FindSelectedShape();
if (theShape)
doc->GetCommandProcessor()->Submit(new DiagramCommand("Cut", OGLEDIT_CUT, doc, NULL, 0.0, 0.0, TRUE, theShape));
}
void DiagramView::OnChangeBackgroundColour(wxCommandEvent& event)
{
DiagramDocument *doc = (DiagramDocument *)GetDocument();
wxShape *theShape = FindSelectedShape();
if (theShape)
{
wxColourData data;
data.SetChooseFull(TRUE);
data.SetColour(theShape->GetBrush()->GetColour());
wxColourDialog *dialog = new wxColourDialog(frame, &data);
wxBrush *theBrush = NULL;
if (dialog->ShowModal() == wxID_OK)
{
wxColourData retData = dialog->GetColourData();
wxColour col = retData.GetColour();
theBrush = wxTheBrushList->FindOrCreateBrush(col, wxSOLID);
}
dialog->Close();
if (theBrush)
doc->GetCommandProcessor()->Submit(new DiagramCommand("Change colour", OGLEDIT_CHANGE_BACKGROUND_COLOUR, doc,
theBrush, theShape));
}
}
void DiagramView::OnEditLabel(wxCommandEvent& event)
{
wxShape *theShape = FindSelectedShape();
if (theShape)
{
wxString newLabel = wxGetTextFromUser("Enter new label", "Shape Label", ((MyEvtHandler *)theShape->GetEventHandler())->label);
GetDocument()->GetCommandProcessor()->Submit(new DiagramCommand("Edit label", OGLEDIT_EDIT_LABEL, (DiagramDocument*) GetDocument(), newLabel, theShape));
}
}
/*
* Window implementations
*/
BEGIN_EVENT_TABLE(MyCanvas, wxShapeCanvas)
EVT_MOUSE_EVENTS(MyCanvas::OnMouseEvent)
EVT_PAINT(MyCanvas::OnPaint)
END_EVENT_TABLE()
// Define a constructor for my canvas
MyCanvas::MyCanvas(wxView *v, wxWindow *parent, wxWindowID id, const wxPoint& pos,
const wxSize& size, long style):
wxShapeCanvas(parent, id, pos, size, style)
{
SetBackgroundColour(*wxWHITE);
view = v;
}
MyCanvas::~MyCanvas(void)
{
}
void MyCanvas::OnLeftClick(double x, double y, int keys)
{
EditorToolPalette *palette = wxGetApp().frame->palette;
wxClassInfo *info = NULL;
switch (palette->currentlySelected)
{
case PALETTE_TOOL1:
{
info = CLASSINFO(wxRectangleShape);
break;
}
case PALETTE_TOOL2:
{
info = CLASSINFO(wxRoundedRectangleShape);
break;
}
case PALETTE_TOOL3:
{
info = CLASSINFO(wxEllipseShape);
break;
}
case PALETTE_TOOL4:
{
info = CLASSINFO(wxDiamondShape);
break;
}
default:
break;
}
if (info)
{
view->GetDocument()->GetCommandProcessor()->Submit(
new DiagramCommand((char*) info->GetClassName(), OGLEDIT_ADD_SHAPE, (DiagramDocument *)view->GetDocument(), info,
x, y));
}
}
void MyCanvas::OnRightClick(double x, double y, int keys)
{
}
void MyCanvas::OnDragLeft(bool draw, double x, double y, int keys)
{
}
void MyCanvas::OnBeginDragLeft(double x, double y, int keys)
{
}
void MyCanvas::OnEndDragLeft(double x, double y, int keys)
{
}
void MyCanvas::OnDragRight(bool draw, double x, double y, int keys)
{
}
void MyCanvas::OnBeginDragRight(double x, double y, int keys)
{
}
void MyCanvas::OnEndDragRight(double x, double y, int keys)
{
}
void MyCanvas::OnMouseEvent(wxMouseEvent& event)
{
wxShapeCanvas::OnMouseEvent(event);
}
void MyCanvas::OnPaint(wxPaintEvent& event)
{
// if (GetDiagram())
wxShapeCanvas::OnPaint(event);
}