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CodeBlocksPortable/wxWidgets-3.0.5/samples/render/render.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name: render.cpp
// Purpose: Render wxWidgets sample
// Author: Vadim Zeitlin
// Modified by:
// Created: 04.08.03
// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// 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/app.h"
#include "wx/frame.h"
#include "wx/dc.h"
#include "wx/dcclient.h"
#include "wx/panel.h"
#include "wx/menu.h"
#include "wx/textdlg.h"
#include "wx/log.h"
#include "wx/msgdlg.h"
#include "wx/icon.h"
#include "wx/image.h"
#endif
#include "wx/apptrait.h"
#include "wx/artprov.h"
#include "wx/renderer.h"
// ----------------------------------------------------------------------------
// resources
// ----------------------------------------------------------------------------
// the application icon (under Windows and OS/2 it is in resources)
#ifndef wxHAS_IMAGES_IN_RESOURCES
#include "../sample.xpm"
#endif
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
// A renderer class draws the header buttons in a "special" way
class MyRenderer : public wxDelegateRendererNative
{
public:
MyRenderer() : wxDelegateRendererNative(wxRendererNative::GetDefault()) { }
virtual int DrawHeaderButton(wxWindow *WXUNUSED(win),
wxDC& dc,
const wxRect& rect,
int WXUNUSED(flags) = 0,
wxHeaderSortIconType WXUNUSED(sortArrow)
= wxHDR_SORT_ICON_NONE,
wxHeaderButtonParams* params = NULL)
{
wxDCBrushChanger setBrush(dc, *wxBLUE_BRUSH);
wxDCTextColourChanger setFgCol(dc, *wxWHITE);
dc.DrawRoundedRectangle(rect, 5);
wxString label;
if ( params )
label = params->m_labelText;
dc.DrawLabel(label, wxNullBitmap, rect, wxALIGN_CENTER);
return rect.width;
}
};
// To use a different renderer from the very beginning we must override
// wxAppTraits method creating the renderer (another, simpler, alternative is
// to call wxRendererNative::Set() a.s.a.p. which should work in 99% of the
// cases, but we show this here just for completeness)
class MyTraits : public wxGUIAppTraits
{
virtual wxRendererNative *CreateRenderer()
{
// it will be deleted on program shutdown by wxWidgets itself
return new MyRenderer;
}
};
// Define a new application type, each program should derive a class from wxApp
class MyApp : public wxApp
{
public:
virtual bool OnInit();
// if we want MyTraits to be used we must override CreateTraits()
virtual wxAppTraits *CreateTraits() { return new MyTraits; }
};
// Define a new frame type: this is going to be our main frame
class MyFrame : public wxFrame
{
public:
// ctor(s)
MyFrame();
virtual ~MyFrame();
private:
// event handlers (these functions should _not_ be virtual)
void OnDrawDisabled(wxCommandEvent& event)
{ OnToggleDrawFlag(event, wxCONTROL_DISABLED); }
void OnDrawFocused(wxCommandEvent& event)
{ OnToggleDrawFlag(event, wxCONTROL_FOCUSED); }
void OnDrawPressed(wxCommandEvent& event)
{ OnToggleDrawFlag(event, wxCONTROL_PRESSED); }
void OnDrawChecked(wxCommandEvent& event)
{ OnToggleDrawFlag(event, wxCONTROL_CHECKED); }
void OnDrawHot(wxCommandEvent& event)
{ OnToggleDrawFlag(event, wxCONTROL_CURRENT); }
void OnDrawUndetermined(wxCommandEvent &event)
{ OnToggleDrawFlag(event, wxCONTROL_UNDETERMINED); }
void OnAlignLeft(wxCommandEvent& WXUNUSED(event))
{ OnChangeAlign(wxALIGN_LEFT); }
void OnAlignCentre(wxCommandEvent& WXUNUSED(event))
{ OnChangeAlign(wxALIGN_CENTRE); }
void OnAlignRight(wxCommandEvent& WXUNUSED(event))
{ OnChangeAlign(wxALIGN_RIGHT); }
void OnUseIcon(wxCommandEvent& event);
void OnUseBitmap(wxCommandEvent& event);
#if wxUSE_DYNLIB_CLASS
void OnLoad(wxCommandEvent& event);
void OnUnload(wxCommandEvent& event);
#endif // wxUSE_DYNLIB_CLASS
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
void OnToggleDrawFlag(wxCommandEvent& event, int flag);
void OnChangeAlign(int align);
class MyPanel *m_panel;
// any class wishing to process wxWidgets events must use this macro
wxDECLARE_EVENT_TABLE();
};
// a very simple class just to have something to draw on
class MyPanel : public wxPanel
{
public:
MyPanel(wxWindow *parent) : wxPanel(parent)
{
m_flags = 0;
m_align = wxALIGN_LEFT;
m_useIcon =
m_useBitmap = false;
}
int GetFlags() const { return m_flags; }
void SetFlags(int flags) { m_flags = flags; }
void SetAlignment(int align) { m_align = align; }
void SetUseIcon(bool useIcon) { m_useIcon = useIcon; }
void SetUseBitmap(bool useBitmap) { m_useBitmap = useBitmap; }
private:
void OnPaint(wxPaintEvent&)
{
wxPaintDC dc(this);
wxRendererNative& renderer = wxRendererNative::Get();
int x1 = 10, // text offset
x2 = 300, // drawing offset
y = 10;
const int lineHeight = dc.GetCharHeight();
dc.DrawText("Demonstration of various wxRenderer functions:", x1, y);
y += lineHeight;
wxString flagsString;
if ( m_flags & wxCONTROL_DISABLED )
flagsString += "wxCONTROL_DISABLED ";
if ( m_flags & wxCONTROL_FOCUSED )
flagsString += "wxCONTROL_FOCUSED ";
if ( m_flags & wxCONTROL_PRESSED )
flagsString += "wxCONTROL_PRESSED ";
if ( m_flags & wxCONTROL_CURRENT )
flagsString += "wxCONTROL_CURRENT ";
if ( m_flags & wxCONTROL_CHECKED )
flagsString += "wxCONTROL_CHECKED ";
if ( m_flags & wxCONTROL_UNDETERMINED )
flagsString += "wxCONTROL_UNDETERMINED ";
if ( flagsString.empty() )
flagsString = "(none)";
dc.DrawText("Using flags: " + flagsString, x1, y);
y += lineHeight*3;
const wxCoord heightHdr = renderer.GetHeaderButtonHeight(this);
const wxCoord widthHdr = 120;
const wxHeaderSortIconType
hdrSortIcon = m_useIcon ? wxHDR_SORT_ICON_UP
: wxHDR_SORT_ICON_NONE;
wxHeaderButtonParams hdrParams;
hdrParams.m_labelText = "Header";
hdrParams.m_labelAlignment = m_align;
if ( m_useBitmap )
{
hdrParams.m_labelBitmap = wxArtProvider::GetBitmap(wxART_WARNING,
wxART_LIST);
}
dc.DrawText("DrawHeaderButton() (default)", x1, y);
wxRendererNative::GetDefault().DrawHeaderButton(this, dc,
wxRect(x2, y, widthHdr, heightHdr), m_flags,
hdrSortIcon, &hdrParams);
y += lineHeight + heightHdr;
dc.DrawText("DrawHeaderButton() (overridden)", x1, y);
renderer.DrawHeaderButton(this, dc,
wxRect(x2, y, widthHdr, heightHdr), m_flags,
hdrSortIcon, &hdrParams);
y += lineHeight + heightHdr;
dc.DrawText("DrawCheckBox()", x1, y);
const wxSize sizeCheck = renderer.GetCheckBoxSize(this);
renderer.DrawCheckBox(this, dc,
wxRect(wxPoint(x2, y), sizeCheck), m_flags);
y += lineHeight + sizeCheck.y;
dc.DrawText("DrawRadioBitmap()", x1, y);
renderer.DrawRadioBitmap(this, dc,
wxRect(wxPoint(x2, y), sizeCheck), m_flags);
y += lineHeight + sizeCheck.y;
dc.DrawText("DrawTreeItemButton()", x1, y);
renderer.DrawTreeItemButton(this, dc,
wxRect(x2, y, 20, 20), m_flags);
y += lineHeight + 20;
#ifdef wxHAS_DRAW_TITLE_BAR_BITMAP
dc.DrawText("DrawTitleBarBitmap()", x1, y);
wxRect rBtn(x2, y, 21, 21);
renderer.DrawTitleBarBitmap(this, dc, rBtn,
wxTITLEBAR_BUTTON_HELP, m_flags);
rBtn.x += 2*rBtn.width;
renderer.DrawTitleBarBitmap(this, dc, rBtn,
wxTITLEBAR_BUTTON_ICONIZE, m_flags);
rBtn.x += 2*rBtn.width;
renderer.DrawTitleBarBitmap(this, dc, rBtn,
wxTITLEBAR_BUTTON_RESTORE, m_flags);
rBtn.x += 2*rBtn.width;
renderer.DrawTitleBarBitmap(this, dc, rBtn,
wxTITLEBAR_BUTTON_MAXIMIZE, m_flags);
rBtn.x += 2*rBtn.width;
renderer.DrawTitleBarBitmap(this, dc, rBtn,
wxTITLEBAR_BUTTON_CLOSE, m_flags);
y += lineHeight + rBtn.height;
#endif // wxHAS_DRAW_TITLE_BAR_BITMAP
}
int m_flags;
int m_align;
bool m_useIcon,
m_useBitmap;
wxDECLARE_EVENT_TABLE();
};
wxBEGIN_EVENT_TABLE(MyPanel, wxPanel)
EVT_PAINT(MyPanel::OnPaint)
wxEND_EVENT_TABLE()
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// IDs for the controls and the menu commands
enum
{
// our menu items
Render_DrawDisabled = 100,
Render_DrawFocused,
Render_DrawPressed,
Render_DrawChecked,
Render_DrawHot,
Render_DrawUndetermined,
Render_AlignLeft,
Render_AlignCentre,
Render_AlignRight,
Render_UseIcon,
Render_UseBitmap,
#if wxUSE_DYNLIB_CLASS
Render_Load,
Render_Unload,
#endif // wxUSE_DYNLIB_CLASS
// standard menu items
Render_Quit = wxID_EXIT,
// it is important for the id corresponding to the "About" command to have
// this standard value as otherwise it won't be handled properly under Mac
// (where it is special and put into the "Apple" menu)
Render_About = wxID_ABOUT
};
// ----------------------------------------------------------------------------
// event tables and other macros for wxWidgets
// ----------------------------------------------------------------------------
// the event tables connect the wxWidgets 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.
wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(Render_DrawDisabled, MyFrame::OnDrawDisabled)
EVT_MENU(Render_DrawFocused, MyFrame::OnDrawFocused)
EVT_MENU(Render_DrawPressed, MyFrame::OnDrawPressed)
EVT_MENU(Render_DrawChecked, MyFrame::OnDrawChecked)
EVT_MENU(Render_DrawHot, MyFrame::OnDrawHot)
EVT_MENU(Render_DrawUndetermined, MyFrame::OnDrawUndetermined)
EVT_MENU(Render_AlignLeft, MyFrame::OnAlignLeft)
EVT_MENU(Render_AlignCentre, MyFrame::OnAlignCentre)
EVT_MENU(Render_AlignRight, MyFrame::OnAlignRight)
EVT_MENU(Render_UseIcon, MyFrame::OnUseIcon)
EVT_MENU(Render_UseBitmap, MyFrame::OnUseBitmap)
#if wxUSE_DYNLIB_CLASS
EVT_MENU(Render_Load, MyFrame::OnLoad)
EVT_MENU(Render_Unload,MyFrame::OnUnload)
#endif // wxUSE_DYNLIB_CLASS
EVT_MENU(Render_Quit, MyFrame::OnQuit)
EVT_MENU(Render_About, MyFrame::OnAbout)
wxEND_EVENT_TABLE()
// Create a new application object: this macro will allow wxWidgets to create
// the application object during program execution (it's better than using a
// static object for many reasons) and also implements 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()
{
if ( !wxApp::OnInit() )
return false;
#ifdef __WXOSX__
// currently the images used by DrawTitleBarBitmap() are hard coded as PNG
// images inside the library itself so we need to enable PNG support to use
// this function
wxImage::AddHandler(new wxPNGHandler);
#endif // OS X
// create the main application window
new MyFrame;
return true;
}
// ----------------------------------------------------------------------------
// main frame
// ----------------------------------------------------------------------------
// frame constructor
MyFrame::MyFrame()
: wxFrame(NULL,
wxID_ANY,
wxT("Render wxWidgets Sample"),
wxPoint(50, 50),
wxSize(450, 340))
{
// set the frame icon
SetIcon(wxICON(sample));
#if wxUSE_MENUS
// create a menu bar
wxMenu *menuFile = new wxMenu;
menuFile->AppendCheckItem(Render_DrawDisabled,
"Draw in &disabled state\tCtrl-D");
menuFile->AppendCheckItem(Render_DrawFocused,
"Draw in &focused state\tCtrl-F");
menuFile->AppendCheckItem(Render_DrawPressed,
"Draw in &pressed state\tCtrl-P");
menuFile->AppendCheckItem(Render_DrawChecked,
"Draw in &checked state\tCtrl-C");
menuFile->AppendCheckItem(Render_DrawHot,
"Draw in &hot state\tCtrl-H");
menuFile->AppendCheckItem(Render_DrawUndetermined,
"Draw in unde&termined state\tCtrl-T");
menuFile->AppendSeparator();
menuFile->AppendRadioItem(Render_AlignLeft, "&Left align\tCtrl-1");
menuFile->AppendRadioItem(Render_AlignCentre, "C&entre align\tCtrl-2");
menuFile->AppendRadioItem(Render_AlignRight, "&Right align\tCtrl-3");
menuFile->AppendSeparator();
menuFile->AppendCheckItem(Render_UseIcon, "Draw &icon\tCtrl-I");
menuFile->AppendCheckItem(Render_UseBitmap, "Draw &bitmap\tCtrl-B");
menuFile->AppendSeparator();
#if wxUSE_DYNLIB_CLASS
menuFile->Append(Render_Load, wxT("&Load renderer...\tCtrl-L"));
menuFile->Append(Render_Unload, wxT("&Unload renderer\tCtrl-U"));
menuFile->AppendSeparator();
#endif // wxUSE_DYNLIB_CLASS
menuFile->Append(Render_Quit);
// the "About" item should be in the help menu
wxMenu *helpMenu = new wxMenu;
helpMenu->Append(Render_About);
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar();
menuBar->Append(menuFile, wxT("&File"));
menuBar->Append(helpMenu, wxT("&Help"));
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
#endif // wxUSE_MENUS
m_panel = new MyPanel(this);
#if wxUSE_STATUSBAR
// create a status bar just for fun (by default with 1 pane only)
CreateStatusBar(2);
SetStatusText(wxT("Welcome to wxWidgets!"));
#endif // wxUSE_STATUSBAR
Show();
}
MyFrame::~MyFrame()
{
delete wxRendererNative::Set(NULL);
}
// event handlers
void MyFrame::OnToggleDrawFlag(wxCommandEvent& event, int flag)
{
int flags = m_panel->GetFlags();
if ( event.IsChecked() )
flags |= flag;
else
flags &= ~flag;
m_panel->SetFlags(flags);
m_panel->Refresh();
}
void MyFrame::OnChangeAlign(int align)
{
m_panel->SetAlignment(align);
m_panel->Refresh();
}
void MyFrame::OnUseIcon(wxCommandEvent& event)
{
m_panel->SetUseIcon(event.IsChecked());
m_panel->Refresh();
}
void MyFrame::OnUseBitmap(wxCommandEvent& event)
{
m_panel->SetUseBitmap(event.IsChecked());
m_panel->Refresh();
}
#if wxUSE_DYNLIB_CLASS
void MyFrame::OnLoad(wxCommandEvent& WXUNUSED(event))
{
static wxString s_name = wxT("renddll");
wxString name = wxGetTextFromUser
(
wxT("Name of the renderer to load:"),
wxT("Render wxWidgets Sample"),
s_name,
this
);
if ( name.empty() )
{
// cancelled
return;
}
s_name = name;
wxRendererNative *renderer = wxRendererNative::Load(name);
if ( !renderer )
{
wxLogError(wxT("Failed to load renderer \"%s\"."), name.c_str());
}
else // loaded ok
{
delete wxRendererNative::Set(renderer);
m_panel->Refresh();
wxLogStatus(this, wxT("Successfully loaded the renderer \"%s\"."),
name.c_str());
}
}
void MyFrame::OnUnload(wxCommandEvent& WXUNUSED(event))
{
wxRendererNative *renderer = wxRendererNative::Set(NULL);
if ( renderer )
{
delete renderer;
m_panel->Refresh();
wxLogStatus(this, wxT("Unloaded the previously loaded renderer."));
}
else
{
wxLogWarning(wxT("No renderer to unload."));
}
}
#endif // wxUSE_DYNLIB_CLASS
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// true is to force the frame to close
Close(true);
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
wxMessageBox(wxT("Render sample shows how to use custom renderers.\n")
wxT("\n")
wxT("(c) 2003 Vadim Zeitlin"),
wxT("About Render wxWidgets Sample"),
wxOK | wxICON_INFORMATION, this);
}