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small font demo

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3775 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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Vadim Zeitlin 1999-10-01 00:50:45 +00:00
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commit 1ccd74daf9
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/////////////////////////////////////////////////////////////////////////////
// Name: font.cpp
// Purpose: wxFont demo
// Author: Vadim Zeitlin
// Modified by:
// Created: 30.09.99
// RCS-ID: $Id$
// Copyright: (c) Vadim Zeitlin
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx/wx.h".
#include <wx/wxprec.h>
#ifdef __BORLANDC__
#pragma hdrstop
#endif
// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all <standard< wxWindows headers
#ifndef WX_PRECOMP
#include <wx/wx.h>
#include <wx/log.h>
#endif
#include <wx/fontdlg.h>
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
// Define a new application type, each program should derive a class from wxApp
class MyApp : public wxApp
{
public:
// override base class virtuals
// ----------------------------
// this one is called on application startup and is a good place for the app
// initialization (doing it here and not in the ctor allows to have an error
// return: if OnInit() returns false, the application terminates)
virtual bool OnInit();
};
// MyCanvas is a canvas on which we show the font sample
class MyCanvas: public wxWindow
{
public:
MyCanvas( wxWindow *parent );
~MyCanvas();
// accessors for the frame
const wxFont& GetTextFont() const { return m_font; }
const wxColour& GetColour() const { return m_colour; }
void SetTextFont(const wxFont& font) { m_font = font; }
void SetColour(const wxColour& colour) { m_colour = colour; }
// event handlers
void OnPaint( wxPaintEvent &event );
private:
wxColour m_colour;
wxFont m_font;
DECLARE_EVENT_TABLE()
};
// Define a new frame type: this is going to be our main frame
class MyFrame : public wxFrame
{
public:
// ctor(s)
MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
// accessors
MyCanvas *GetCanvas() const { return m_canvas; }
// event handlers (these functions should _not_ be virtual)
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
void OnSelectFont(wxCommandEvent& event);
void OnCreateFont(wxCommandEvent& event);
protected:
MyCanvas *m_canvas;
private:
// any class wishing to process wxWindows events must use this macro
DECLARE_EVENT_TABLE()
};
// A custom font dialog which allows to directly edit wxFont proprieties
class MyFontDialog : public wxDialog
{
public:
MyFontDialog(MyFrame *frame);
// event handlers
void OnApply(wxCommandEvent& WXUNUSED(event)) { DoApply(); }
protected:
void DoApply();
MyCanvas *m_canvas;
private:
//DECLARE_EVENT_TABLE() TODO
};
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// IDs for the controls and the menu commands
enum
{
// menu items
Font_Quit = 1,
Font_About,
Font_Choose = 100,
Font_Create
};
// ----------------------------------------------------------------------------
// event tables and other macros for wxWindows
// ----------------------------------------------------------------------------
// the event tables connect the wxWindows events with the functions (event
// handlers) which process them. It can be also done at run-time, but for the
// simple menu events like this the static method is much simpler.
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(Font_Quit, MyFrame::OnQuit)
EVT_MENU(Font_About, MyFrame::OnAbout)
EVT_MENU(Font_Choose, MyFrame::OnSelectFont)
EVT_MENU(Font_Create, MyFrame::OnCreateFont)
END_EVENT_TABLE()
// Create a new application object: this macro will allow wxWindows to create
// the application object during program execution (it's better than using a
// static object for many reasons) and also declares the accessor function
// wxGetApp() which will return the reference of the right type (i.e. MyApp and
// not wxApp)
IMPLEMENT_APP(MyApp)
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// the application class
// ----------------------------------------------------------------------------
// `Main program' equivalent: the program execution "starts" here
bool MyApp::OnInit()
{
// Create the main application window
MyFrame *frame = new MyFrame("Minimal wxWindows App",
wxPoint(50, 50), wxSize(450, 340));
// Show it and tell the application that it's our main window
frame->Show(TRUE);
SetTopWindow(frame);
// success: wxApp::OnRun() will be called which will enter the main message
// loop and the application will run. If we returned FALSE here, the
// application would exit immediately.
return TRUE;
}
// ----------------------------------------------------------------------------
// main frame
// ----------------------------------------------------------------------------
// frame constructor
MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
: wxFrame((wxFrame *)NULL, -1, title, pos, size)
{
// set the frame icon
SetIcon(wxICON(mondrian));
// create a menu bar
wxMenu *menuFile = new wxMenu;
menuFile->Append(Font_About, "&About...\tCtrl-A", "Show about dialog");
menuFile->AppendSeparator();
menuFile->Append(Font_Quit, "E&xit\tAlt-X", "Quit this program");
wxMenu *menuFont = new wxMenu;
menuFont->Append(Font_Choose, "&Select font...\tCtrl-F",
"Select a standard font");
menuFont->Append(Font_Create, "&Create font...\tCtrl-C",
"Create a custom font");
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar;
menuBar->Append(menuFile, "&File");
menuBar->Append(menuFont, "F&ont");
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
m_canvas = new MyCanvas(this);
// create a status bar just for fun (by default with 1 pane only)
CreateStatusBar(2);
SetStatusText("Welcome to wxWindows!");
}
// event handlers
void MyFrame::OnCreateFont(wxCommandEvent& WXUNUSED(event))
{
MyFontDialog dialog(this);
(void)dialog.ShowModal();
}
void MyFrame::OnSelectFont(wxCommandEvent& WXUNUSED(event))
{
wxFontData data;
data.SetInitialFont(m_canvas->GetTextFont());
data.SetColour(m_canvas->GetColour());
wxFontDialog dialog(this, &data);
if ( dialog.ShowModal() == wxID_OK )
{
wxFontData retData = dialog.GetFontData();
m_canvas->SetTextFont(retData.GetChosenFont());
m_canvas->SetColour(retData.GetColour());
m_canvas->Refresh();
}
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// TRUE is to force the frame to close
Close(TRUE);
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
wxMessageBox("wxWindows font demo.", "About Font",
wxOK | wxICON_INFORMATION, this);
}
// ----------------------------------------------------------------------------
// MyCanvas
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(MyCanvas, wxWindow)
EVT_PAINT(MyCanvas::OnPaint)
END_EVENT_TABLE()
MyCanvas::MyCanvas( wxWindow *parent )
: wxWindow( parent, -1 )
{
m_font = *wxNORMAL_FONT;
m_colour = *wxRED;
}
MyCanvas::~MyCanvas()
{
}
void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
{
wxPaintDC dc(this);
PrepareDC(dc);
// set background
dc.SetBackground(wxBrush("white", wxSOLID));
dc.Clear();
// output the font name/info
wxString fontInfo;
fontInfo.Printf("Font family is '%s', style '%s', weight '%s'",
m_font.GetFamilyString().c_str(),
m_font.GetStyleString().c_str(),
m_font.GetWeightString().c_str());
dc.DrawText(fontInfo, 5, 5);
// prepare to draw the font
dc.SetFont(m_font);
dc.SetTextForeground(m_colour);
// the size of one cell (char + small margin)
int w = dc.GetCharWidth() + 5,
h = dc.GetCharHeight() + 4;
// the origin for our table
int x = 5,
y = 2*h + 5;
// print all font symbols from 32 to 256 in 7 rows of 32 chars each
for ( int i = 1; i < 8; i++ )
{
for ( int j = 0; j < 32; j++ )
{
dc.DrawText(char(32*i + j), x + w*j, y + h*i);
}
}
// draw the lines between them
dc.SetPen(wxPen(wxColour("blue"), 1, wxSOLID));
int l;
// horizontal
y += h;
for ( l = 0; l < 8; l++ )
{
int yl = y + h*l - 2;
dc.DrawLine(x - 2, yl, x + 32*w - 2, yl);
}
// and vertical
for ( l = 0; l < 33; l++ )
{
int xl = x + w*l - 2;
dc.DrawLine(xl, y, xl, y + 7*h - 2);
}
}
// ----------------------------------------------------------------------------
// MyFontDialog
// ----------------------------------------------------------------------------
MyFontDialog::MyFontDialog(MyFrame *frame)
: wxDialog(frame, -1, wxString("Edit font attributes"))
{
m_canvas = frame->GetCanvas();
// create controls
wxSize sizeBtn = wxButton::GetDefaultSize();
// TODO
// position and size the dialog
SetClientSize(4*sizeBtn.x, 10*sizeBtn.y);
Centre();
}
void MyFontDialog::DoApply()
{
wxFont font; //(size, family, style, weight, underlined, face, encoding);
if ( !font.Ok() )
{
wxLogError("Font creation failed.");
}
else
{
m_canvas->SetTextFont(font);
m_canvas->Refresh();
}
}