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wxWidgets/samples/svg/svgtest.cpp
Francesco Montorsi 49e3b82c03 revise the sample, simplifying and cleaning it where possible 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59522 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2009-03-14 01:01:12 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: svgtest.cpp
// Purpose: SVG sample
// Author: Chris Elliott
// Modified by:
// RCS-ID: $Id$
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// ===========================================================================
// declarations
// ===========================================================================
// ---------------------------------------------------------------------------
// headers
// ---------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/wx.h"
#include "wx/mdi.h"
#endif
#include "wx/toolbar.h"
#include "wx/dcsvg.h"
#include "wx/vector.h"
#include "mondrian.xpm"
#include "bitmaps/new.xpm"
#include "bitmaps/save.xpm"
#include "bitmaps/help.xpm"
#include "SVGlogo24.xpm"
class MyChild;
class MyCanvas;
// ---------------------------------------------------------------------------
// classes
// ---------------------------------------------------------------------------
class MyApp : public wxApp
{
public:
bool OnInit();
};
class MyFrame : public wxMDIParentFrame
{
public:
MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title,
const wxPoint& pos, const wxSize& size, const long style);
void InitToolBar(wxToolBar* toolBar);
void OnSize(wxSizeEvent& event);
void OnAbout(wxCommandEvent& event);
void OnNewWindow(wxCommandEvent& event);
void OnQuit(wxCommandEvent& event);
void FileSavePicture (wxCommandEvent& event);
unsigned int GetCountOfChildren() const
{ return m_nWinCreated; }
private:
unsigned int m_nWinCreated;
DECLARE_EVENT_TABLE()
};
class MyChild: public wxMDIChildFrame
{
public:
MyChild(wxMDIParentFrame *parent, const wxString& title,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
const long style = wxDEFAULT_FRAME_STYLE);
~MyChild();
void OnActivate(wxActivateEvent& event);
void OnQuit(wxCommandEvent& event);
bool OnSave(wxString filename);
MyFrame* GetFrame()
{ return m_frame; }
private:
MyCanvas *m_canvas;
MyFrame *m_frame;
DECLARE_EVENT_TABLE()
};
class MyCanvas : public wxScrolledWindow
{
public:
MyCanvas(MyChild *parent, const wxPoint& pos, const wxSize& size);
virtual void OnDraw(wxDC& dc);
private:
int m_index;
MyChild* m_child;
DECLARE_EVENT_TABLE()
};
// ---------------------------------------------------------------------------
// constants
// ---------------------------------------------------------------------------
// menu items ids
enum
{
MDI_QUIT = 100,
MDI_NEW_WINDOW,
MDI_SAVE,
MDI_REFRESH,
MDI_CHILD_QUIT,
MDI_ABOUT
};
// ---------------------------------------------------------------------------
// event tables
// ---------------------------------------------------------------------------
BEGIN_EVENT_TABLE(MyFrame, wxMDIParentFrame)
EVT_MENU(MDI_ABOUT, MyFrame::OnAbout)
EVT_MENU(MDI_NEW_WINDOW, MyFrame::OnNewWindow)
EVT_MENU(MDI_QUIT, MyFrame::OnQuit)
EVT_MENU (MDI_SAVE, MyFrame::FileSavePicture)
EVT_SIZE(MyFrame::OnSize)
END_EVENT_TABLE()
// ===========================================================================
// implementation
// ===========================================================================
// ---------------------------------------------------------------------------
// MyApp
// ---------------------------------------------------------------------------
IMPLEMENT_APP(MyApp)
bool MyApp::OnInit()
{
// Create the main frame window
MyFrame* frame = new MyFrame((wxFrame *)NULL, -1, wxT("SVG Demo"),
wxDefaultPosition, wxSize(500, 400),
wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
frame->Show(true);
SetTopWindow(frame);
return true;
}
// ---------------------------------------------------------------------------
// MyFrame
// ---------------------------------------------------------------------------
// Define my frame constructor
MyFrame::MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title,
const wxPoint& pos, const wxSize& size, const long style)
: wxMDIParentFrame(parent, id, title, pos, size, style)
{
m_nWinCreated = 0;
SetIcon(wxICON(mondrian));
// Make a menubar
wxMenu *file_menu = new wxMenu;
file_menu->Append(MDI_NEW_WINDOW, wxT("&New test\tCtrl+N"));
file_menu->Append(MDI_QUIT, wxT("&Exit\tAlt+X"));
wxMenu *help_menu = new wxMenu;
help_menu->Append(MDI_ABOUT, wxT("&About"));
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, wxT("&File"));
menu_bar->Append(help_menu, wxT("&Help"));
// Associate the menu bar with the frame
SetMenuBar(menu_bar);
#if wxUSE_STATUSBAR
CreateStatusBar();
#endif // wxUSE_STATUSBAR
CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
InitToolBar(GetToolBar());
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
Close();
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
{
(void)wxMessageBox(wxT("wxWidgets SVG sample\n")
wxT("Author: Chris Elliott (c) 2002-2009\n")
wxT("Usage: click File|New to show tests"),
wxT("About SVG Test"));
}
void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event) )
{
// Make another frame, containing a canvas
MyChild *subframe = new MyChild(this, wxT("SVG Frame"));
wxString title;
title.Printf(wxT("SVG Test Window %d"), m_nWinCreated );
// counts number of children previously, even if now closed
m_nWinCreated ++;
// Give it a title and icon
subframe->SetTitle(title);
subframe->SetIcon(wxICON(mondrian));
// Make a menubar
wxMenu *file_menu = new wxMenu;
file_menu->Append(MDI_NEW_WINDOW, wxT("&Another test\tCtrl+N"));
file_menu->Append(MDI_SAVE, wxT("&Save\tCtrl+S"), wxT("Save in SVG format"));
file_menu->Append(MDI_CHILD_QUIT, wxT("&Close child\tCtrl+F4"));
file_menu->Append(MDI_QUIT, wxT("&Exit\tAlt+X"));
wxMenu *help_menu = new wxMenu;
help_menu->Append(MDI_ABOUT, wxT("&About"));
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, wxT("&File"));
menu_bar->Append(help_menu, wxT("&Help"));
// Associate the menu bar with the frame
subframe->SetMenuBar(menu_bar);
subframe->Show(true);
}
void MyFrame::OnSize(wxSizeEvent& event)
{
int w, h;
GetClientSize(&w, &h);
GetClientWindow()->SetSize(0, 0, w, h);
event.Skip();
}
void MyFrame::InitToolBar(wxToolBar* toolBar)
{
const int maxBitmaps = 3;
wxBitmap* bitmaps[maxBitmaps];
bitmaps[0] = new wxBitmap( new_xpm );
bitmaps[1] = new wxBitmap( save_xpm );
bitmaps[2] = new wxBitmap( help_xpm );
toolBar->AddTool(MDI_NEW_WINDOW, wxEmptyString, *(bitmaps[0]), wxS("New SVG test window"));
toolBar->AddTool(MDI_SAVE, wxEmptyString, *bitmaps[1], wxS("Save test in SVG format"));
toolBar->AddSeparator();
toolBar->AddTool(MDI_ABOUT, wxEmptyString, *bitmaps[2], wxS("Help"));
toolBar->Realize();
int i;
for (i = 0; i < maxBitmaps; i++)
delete bitmaps[i];
}
void MyFrame::FileSavePicture (wxCommandEvent & WXUNUSED(event) )
{
#if wxUSE_FILEDLG
MyChild * pChild = (MyChild *)GetActiveChild();
if (pChild == NULL)
{
return;
}
wxFileDialog dialog(this, wxT("Save Picture as"), wxEmptyString, pChild->GetTitle(),
wxT("SVG vector picture files (*.svg)|*.svg"),
wxFD_SAVE|wxFD_OVERWRITE_PROMPT);
if (dialog.ShowModal() == wxID_OK)
{
if (!pChild->OnSave ( dialog.GetPath() ))
{
return;
}
}
return;
#endif // wxUSE_FILEDLG
}
// ---------------------------------------------------------------------------
// MyCanvas
// ---------------------------------------------------------------------------
BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
END_EVENT_TABLE()
// Define a constructor for my canvas
MyCanvas::MyCanvas(MyChild *parent, const wxPoint& pos, const wxSize& size)
: wxScrolledWindow(parent, wxID_ANY, pos, size, wxSUNKEN_BORDER|wxVSCROLL|wxHSCROLL)
{
SetBackgroundColour(wxColour(_T("WHITE")));
m_child = parent;
m_index = m_child->GetFrame()->GetCountOfChildren() % 7;
}
// Define the repainting behaviour
void MyCanvas::OnDraw(wxDC& dc)
{
// vars to use ...
#if wxUSE_STATUSBAR
wxString s;
#endif // wxUSE_STATUSBAR
wxPen wP;
wxBrush wB;
wxPoint points[6];
wxColour wC;
wxFont wF;
dc.SetFont(*wxSWISS_FONT);
dc.SetPen(*wxGREEN_PEN);
switch (m_index)
{
default:
case 0:
// draw lines to make a cross
dc.DrawLine(0, 0, 200, 200);
dc.DrawLine(200, 0, 0, 200);
// draw point colored line and spline
wP = *wxCYAN_PEN;
wP.SetWidth(3);
dc.SetPen(wP);
dc.DrawPoint (25,15);
dc.DrawLine(50, 30, 200, 30);
dc.DrawSpline(50, 200, 50, 100, 200, 10);
#if wxUSE_STATUSBAR
s = wxT("Green Cross, Cyan Line and spline");
#endif // wxUSE_STATUSBAR
break;
case 1:
// draw standard shapes
dc.SetBrush(*wxCYAN_BRUSH);
dc.SetPen(*wxRED_PEN);
dc.DrawRectangle(10, 10, 100, 70);
wB = wxBrush (_T("DARK ORCHID"), wxBRUSHSTYLE_TRANSPARENT);
dc.SetBrush (wB);
dc.DrawRoundedRectangle(50, 50, 100, 70, 20);
dc.SetBrush (wxBrush(_T("GOLDENROD")) );
dc.DrawEllipse(100, 100, 100, 50);
points[0].x = 100; points[0].y = 200;
points[1].x = 70; points[1].y = 260;
points[2].x = 160; points[2].y = 230;
points[3].x = 40; points[3].y = 230;
points[4].x = 130; points[4].y = 260;
points[5].x = 100; points[5].y = 200;
dc.DrawPolygon(5, points);
dc.DrawLines (6, points, 160);
#if wxUSE_STATUSBAR
s = wxT("Blue rectangle, red edge, clear rounded rectangle, gold ellipse, gold and clear stars");
#endif // wxUSE_STATUSBAR
break;
case 2:
// draw text in Arial or similar font
dc.DrawLine(50,25,50,35);
dc.DrawLine(45,30,55,30);
dc.DrawText(wxT("This is a Swiss-style string"), 50, 30);
wC = dc.GetTextForeground();
dc.SetTextForeground (_T("FIREBRICK"));
// no effect in msw ??
dc.SetTextBackground (_T("WHEAT"));
dc.DrawText(wxT("This is a Red string"), 50, 200);
dc.DrawRotatedText(wxT("This is a 45 deg string"), 50, 200, 45);
dc.DrawRotatedText(wxT("This is a 90 deg string"), 50, 200, 90);
wF = wxFont ( 18, wxROMAN, wxITALIC, wxBOLD, false, wxT("Times New Roman"));
dc.SetFont(wF);
dc.SetTextForeground (wC);
dc.DrawText(wxT("This is a Times-style string"), 50, 60);
#if wxUSE_STATUSBAR
s = wxT("Swiss, Times text; red text, rotated and colored orange");
#endif // wxUSE_STATUSBAR
break;
case 3 :
// four arcs start and end points, center
dc.SetBrush(*wxGREEN_BRUSH);
dc.DrawArc ( 200,300, 370,230, 300,300 );
dc.SetBrush(*wxBLUE_BRUSH);
dc.DrawArc ( 270-50, 270-86, 270-86, 270-50, 270,270 );
dc.SetDeviceOrigin(-10,-10);
dc.DrawArc ( 270-50, 270-86, 270-86, 270-50, 270,270 );
dc.SetDeviceOrigin(0,0);
wP.SetColour (_T("CADET BLUE"));
dc.SetPen(wP);
dc.DrawArc ( 75,125, 110, 40, 75, 75 );
wP.SetColour (_T("SALMON"));
dc.SetPen(wP);
dc.SetBrush(*wxRED_BRUSH);
//top left corner, width and height, start and end angle
// 315 same center and x-radius as last pie-arc, half Y radius
dc.DrawEllipticArc(25,50,100,50,180.0,45.0);
wP = *wxCYAN_PEN;
wP.SetWidth(3);
dc.SetPen(wP);
//wxTRANSPARENT));
dc.SetBrush (wxBrush (_T("SALMON")));
dc.DrawEllipticArc(300, 0,200,100, 0.0,145.0);
//same end point
dc.DrawEllipticArc(300, 50,200,100,90.0,145.0);
dc.DrawEllipticArc(300,100,200,100,90.0,345.0);
#if wxUSE_STATUSBAR
s = wxT("This is an arc test page");
#endif // wxUSE_STATUSBAR
break;
case 4:
dc.DrawCheckMark ( 30,30,25,25);
dc.SetBrush (wxBrush (_T("SALMON"),wxBRUSHSTYLE_TRANSPARENT));
dc.DrawCheckMark ( 80,50,75,75);
dc.DrawRectangle ( 80,50,75,75);
#if wxUSE_STATUSBAR
s = wxT("Two check marks");
#endif // wxUSE_STATUSBAR
break;
case 5:
wF = wxFont ( 18, wxROMAN, wxITALIC, wxBOLD, false, wxT("Times New Roman"));
dc.SetFont(wF);
dc.DrawLine(0, 0, 200, 200);
dc.DrawLine(200, 0, 0, 200);
dc.DrawText(wxT("This is an 18pt string"), 50, 60);
// rescale and draw in blue
wP = *wxCYAN_PEN;
dc.SetPen(wP);
dc.SetUserScale (2.0,0.5);
dc.SetDeviceOrigin(200,0);
dc.DrawLine(0, 0, 200, 200);
dc.DrawLine(200, 0, 0, 200);
dc.DrawText(wxT("This is an 18pt string 2 x 0.5 UserScaled"), 50, 60);
dc.SetUserScale (2.0,2.0);
dc.SetDeviceOrigin(200,200);
dc.DrawText(wxT("This is an 18pt string 2 x 2 UserScaled"), 50, 60);
wP = *wxRED_PEN;
dc.SetPen(wP);
dc.SetUserScale (1.0,1.0);
dc.SetDeviceOrigin(0,10);
dc.SetMapMode (wxMM_METRIC); //svg ignores this
dc.DrawLine(0, 0, 200, 200);
dc.DrawLine(200, 0, 0, 200);
dc.DrawText(wxT("This is an 18pt string in MapMode"), 50, 60);
#if wxUSE_STATUSBAR
s = wxT("Scaling test page");
#endif // wxUSE_STATUSBAR
break;
case 6:
dc.DrawIcon( wxIcon(mondrian_xpm), 10, 10 );
dc.DrawBitmap ( wxBitmap(svgbitmap_xpm), 50,15);
#if wxUSE_STATUSBAR
s = wxT("Icon and Bitmap ");
#endif // wxUSE_STATUSBAR
break;
}
#if wxUSE_STATUSBAR
m_child->SetStatusText(s);
#endif // wxUSE_STATUSBAR
}
// ---------------------------------------------------------------------------
// MyChild
// ---------------------------------------------------------------------------
// Note that MDI_NEW_WINDOW and MDI_ABOUT commands get passed
// to the parent window for processing, so no need to
// duplicate event handlers here.
BEGIN_EVENT_TABLE(MyChild, wxMDIChildFrame)
EVT_MENU(MDI_CHILD_QUIT, MyChild::OnQuit)
END_EVENT_TABLE()
MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title,
const wxPoint& pos, const wxSize& size,
const long style)
: wxMDIChildFrame(parent, wxID_ANY, title, pos, size, style)
{
m_frame = (MyFrame *) parent;
#if wxUSE_STATUSBAR
CreateStatusBar();
SetStatusText(title);
#endif // wxUSE_STATUSBAR
m_canvas = new MyCanvas(this, wxPoint(0, 0), GetClientSize());
// Give it scrollbars
m_canvas->SetScrollbars(20, 20, 50, 50);
}
MyChild::~MyChild()
{
}
void MyChild::OnQuit(wxCommandEvent& WXUNUSED(event))
{
Close(true);
}
bool MyChild::OnSave(wxString filename)
{
wxSVGFileDC svgDC (filename, 600, 650);
m_canvas->OnDraw (svgDC);
return svgDC.IsOk();
}
void MyChild::OnActivate(wxActivateEvent& event)
{
if ( event.GetActive() && m_canvas )
m_canvas->SetFocus();
}
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