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Improve "svg" sample UI to make using it less troublesome

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The sample forced the user to use the menu "Open" command several (up to 8!)
times to get to a particular page which was inconvenient and confusing,
especially because more than 8 windows could be opened.

Fix both problems by just creating a notebook with 8 pages, each corresponding
to a particular test.
This commit is contained in:
Prashant Kumar Nirmal 2017-03-31 16:55:23 +02:00 committed by Vadim Zeitlin
parent 15ae00d7a2
commit e2fbfb693f
1 changed files with 88 additions and 224 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

312
samples/svg/svgtest.cpp
View File

@ -23,16 +23,12 @@
#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 <wx/notebook.h>
#include "bitmaps/new.xpm"
#include "bitmaps/save.xpm"
#include "bitmaps/help.xpm"
#include "SVGlogo24.xpm"
#ifndef wxHAS_IMAGES_IN_RESOURCES
@ -41,9 +37,6 @@
#include <math.h>
class MyChild;
class MyCanvas;
// ---------------------------------------------------------------------------
// classes
// ---------------------------------------------------------------------------
@ -54,61 +47,31 @@ public:
bool OnInit() wxOVERRIDE;
};
class MyFrame : public wxMDIParentFrame
class MyPage : public wxScrolledWindow
{
public:
MyPage(wxNotebook *parent, int index);
virtual void OnDraw(wxDC& dc) wxOVERRIDE;
bool OnSave(wxString);
private:
int m_index;
};
class MyFrame : public wxFrame
{
public:
MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title,
const wxPoint& pos, const wxSize& size, const long style);
const wxPoint& pos, const wxSize& size);
void InitToolBar(wxToolBar* toolBar);
MyPage *CreateNewPage(int index);
void OnSize(wxSizeEvent& event);
void FileSavePicture(wxCommandEvent& 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;
wxDECLARE_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;
wxDECLARE_EVENT_TABLE();
};
class MyCanvas : public wxScrolledWindow
{
public:
MyCanvas(MyChild *parent, const wxPoint& pos, const wxSize& size);
virtual void OnDraw(wxDC& dc) wxOVERRIDE;
private:
int m_index;
MyChild* m_child;
wxNotebook *m_notebook;
wxPanel *m_panel;
wxBoxSizer *m_sizerFrame;
wxDECLARE_EVENT_TABLE();
};
@ -118,27 +81,22 @@ private:
// ---------------------------------------------------------------------------
// menu items ids
enum
{
MDI_QUIT = 100,
MDI_NEW_WINDOW,
MDI_SAVE,
MDI_REFRESH,
MDI_CHILD_QUIT,
MDI_ABOUT
ID_SAVE = 100,
ID_ABOUT,
ID_QUIT
};
// ---------------------------------------------------------------------------
// event tables
// ---------------------------------------------------------------------------
wxBEGIN_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)
wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(ID_ABOUT, MyFrame::OnAbout)
EVT_MENU(ID_QUIT, MyFrame::OnQuit)
EVT_MENU(ID_SAVE, MyFrame::FileSavePicture)
wxEND_EVENT_TABLE()
// ===========================================================================
@ -155,37 +113,38 @@ 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);
MyFrame* frame = new MyFrame(NULL, -1, wxT("SVG Demo"),
wxDefaultPosition, wxSize(500, 400));
frame->Show(true);
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;
MyFrame::MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title,
const wxPoint& pos, const wxSize& size)
: wxFrame(parent, id, title, pos, size)
{
SetIcon(wxICON(sample));
#if wxUSE_STATUSBAR
CreateStatusBar();
#endif // wxUSE_STATUSBAR
// 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"));
file_menu->Append(ID_SAVE, wxT("&Save As..\tCtrl+S"));
file_menu->Append(ID_QUIT, wxT("&Exit\tAlt+X"));
wxMenu *help_menu = new wxMenu;
help_menu->Append(MDI_ABOUT, wxT("&About"));
help_menu->Append(ID_ABOUT, wxT("&About"));
wxMenuBar *menu_bar = new wxMenuBar;
@ -195,12 +154,33 @@ MyFrame::MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title,
// Associate the menu bar with the frame
SetMenuBar(menu_bar);
#if wxUSE_STATUSBAR
CreateStatusBar();
#endif // wxUSE_STATUSBAR
//Panel containing a notebook
m_panel = new wxPanel(this);
m_sizerFrame= new wxBoxSizer(wxVERTICAL);
m_panel->SetSizer(m_sizerFrame);
CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
InitToolBar(GetToolBar());
//Create a notebook
m_notebook = new wxNotebook(m_panel, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxBK_TOP);
//Add SVG Windows to a notebook
for (int i = 0; i <= 8; ++i)
{
wxString svgTitle;
svgTitle.Printf(wxT("SVG Test %d"), i);
m_notebook->AddPage(CreateNewPage(i), svgTitle, true);
}
//Add a notebook
m_sizerFrame->Insert(0, m_notebook, wxSizerFlags(5).Expand().Border());
m_notebook->ChangeSelection(0);
m_sizerFrame->Layout();
}
MyPage *MyFrame::CreateNewPage(int index)
{
MyPage *page = new MyPage(m_notebook, index);
return page;
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
@ -208,97 +188,31 @@ void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
Close();
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
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("Usage: click File|Save As.. to Save the Selected SVG Test"),
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(sample));
// 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) )
void MyFrame::FileSavePicture(wxCommandEvent& WXUNUSED(event))
{
#if wxUSE_FILEDLG
MyChild * pChild = (MyChild *)GetActiveChild();
if (pChild == NULL)
MyPage *page = (MyPage *) m_notebook->GetCurrentPage();
if (page == NULL)
{
return;
}
wxFileDialog dialog(this, wxT("Save Picture as"), wxEmptyString, pChild->GetTitle(),
wxFileDialog dialog(this, wxT("Save Picture as"), wxEmptyString,
m_notebook->GetPageText(m_notebook->GetSelection()),
wxT("SVG vector picture files (*.svg)|*.svg"),
wxFD_SAVE|wxFD_OVERWRITE_PROMPT);
if (dialog.ShowModal() == wxID_OK)
{
if (!pChild->OnSave ( dialog.GetPath() ))
if (!page->OnSave ( dialog.GetPath() ))
{
return;
}
@ -307,28 +221,30 @@ void MyFrame::FileSavePicture (wxCommandEvent & WXUNUSED(event) )
#endif // wxUSE_FILEDLG
}
// ---------------------------------------------------------------------------
// MyCanvas
// MyPage
// ---------------------------------------------------------------------------
wxBEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
wxEND_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)
// Define a constructor for my page
MyPage::MyPage(wxNotebook *parent, int index)
: wxScrolledWindow(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxVSCROLL|wxHSCROLL)
{
SetBackgroundColour(*wxWHITE);
SetScrollbars(20, 20, 50, 50);
m_index = index;
}
m_child = parent;
m_index = m_child->GetFrame()->GetCountOfChildren() % 9;
bool MyPage::OnSave(wxString filename)
{
wxSVGFileDC svgDC (filename, 600, 650);
OnDraw (svgDC);
return svgDC.IsOk();
}
// Define the repainting behaviour
void MyCanvas::OnDraw(wxDC& dc)
void MyPage::OnDraw(wxDC& dc)
{
// vars to use ...
// vars to use ...
#if wxUSE_STATUSBAR
wxString s;
#endif // wxUSE_STATUSBAR
@ -604,59 +520,7 @@ void MyCanvas::OnDraw(wxDC& dc)
break;
}
#if wxUSE_STATUSBAR
m_child->SetStatusText(s);
( (wxFrame *)wxGetTopLevelParent(this) )->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.
wxBEGIN_EVENT_TABLE(MyChild, wxMDIChildFrame)
EVT_MENU(MDI_CHILD_QUIT, MyChild::OnQuit)
wxEND_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();
}