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wxWidgets/samples/render/render.cpp
Paul Cornett 3aad506c5b Avoid some -Wfloat-conversion warnings
2022-02-13 18:11:55 -08:00

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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"
#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"
#include "wx/dcgraph.h"
// ----------------------------------------------------------------------------
// resources
// ----------------------------------------------------------------------------
// the application icon (under Windows 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) wxOVERRIDE
{
wxDCBrushChanger setBrush(dc, *wxBLUE_BRUSH);
wxDCTextColourChanger setFgCol(dc, *wxWHITE);
wxDCTextBgModeChanger setBgMode(dc, wxBRUSHSTYLE_TRANSPARENT);
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() wxOVERRIDE
{
// 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() wxOVERRIDE;
// if we want MyTraits to be used we must override CreateTraits()
virtual wxAppTraits *CreateTraits() wxOVERRIDE { 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 OnDrawSpecial(wxCommandEvent &event)
{ OnToggleDrawFlag(event, wxCONTROL_SPECIAL); }
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);
void OnUseGeneric(wxCommandEvent& event);
#if wxUSE_DYNLIB_CLASS
void OnLoad(wxCommandEvent& event);
void OnUnload(wxCommandEvent& event);
#endif // wxUSE_DYNLIB_CLASS
void OnToggleLayoutDirection(wxCommandEvent &evt);
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
void OnToggleDrawFlag(wxCommandEvent& event, int flag);
void OnChangeAlign(int align);
#if wxUSE_GRAPHICS_CONTEXT
void OnGraphicContextNone(wxCommandEvent& evt);
void OnGraphicContextDefault(wxCommandEvent& evt);
#if wxUSE_CAIRO
void OnGraphicContextCairo(wxCommandEvent& evt);
#endif // wxUSE_CAIRO
#ifdef __WXMSW__
#if wxUSE_GRAPHICS_GDIPLUS
void OnGraphicContextGDIPlus(wxCommandEvent& evt);
#endif
#if wxUSE_GRAPHICS_DIRECT2D
void OnGraphicContextDirect2D(wxCommandEvent& evt);
#endif
#endif // __WXMSW__
#endif // wxUSE_GRAPHICS_CONTEXT
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 =
m_useGeneric = false;
#if wxUSE_GRAPHICS_CONTEXT
m_renderer = NULL;
#endif
}
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; }
void SetUseGeneric(bool useGeneric) { m_useGeneric = useGeneric; }
#if wxUSE_GRAPHICS_CONTEXT
void UseGraphicRenderer(wxGraphicsRenderer* renderer);
#endif
private:
void OnPaint(wxPaintEvent&)
{
wxPaintDC pdc(this);
#if wxUSE_GRAPHICS_CONTEXT
wxGCDC gdc;
if ( m_renderer )
{
wxGraphicsContext* ctx = m_renderer->CreateContext(pdc);
gdc.SetBackground(GetBackgroundColour());
gdc.SetGraphicsContext(ctx);
}
wxDC& dc = m_renderer ? static_cast<wxDC&>(gdc) : pdc;
#else
wxDC& dc = pdc;
#endif
wxRendererNative& renderer = m_useGeneric ? wxRendererNative::GetGeneric()
: wxRendererNative::Get();
int x1 = FromDIP(10), // text offset
x2 = FromDIP(300), // drawing offset
y = FromDIP(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 (m_flags & wxCONTROL_SPECIAL)
flagsString += "wxCONTROL_SPECIAL ";
if (flagsString.empty())
flagsString = "(none)";
dc.DrawText("Using flags: " + flagsString, x1, y);
y += lineHeight*3;
const wxCoord heightListItem = FromDIP(48);
const wxCoord widthListItem = 30*GetCharWidth();
{
dc.DrawText("DrawItemText() alignment", x1, y);
wxRect textRect(x2, y, widthListItem, heightListItem);
wxDCBrushChanger setBrush(dc, *wxTRANSPARENT_BRUSH);
wxDCPenChanger setPen(dc, *wxGREEN_PEN);
dc.DrawRectangle(textRect);
renderer.DrawItemText(this, dc, L"Top Left (\u1ED6)", textRect);
renderer.DrawItemText(this, dc, "Bottom right", textRect,
wxALIGN_BOTTOM | wxALIGN_RIGHT);
y += lineHeight + heightListItem;
}
const wxCoord heightHdr = renderer.GetHeaderButtonHeight(this);
const wxCoord width = 15*GetCharWidth();
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);
}
// Note that we need to use GetDefault() explicitly to show the default
// implementation.
dc.DrawText("DrawHeaderButton() (default)", x1, y);
wxRendererNative::GetDefault().DrawHeaderButton(this, dc,
wxRect(x2, y, width, heightHdr), m_flags,
hdrSortIcon, &hdrParams);
y += lineHeight + heightHdr;
dc.DrawText("DrawHeaderButton() (overridden)", x1, y);
renderer.DrawHeaderButton(this, dc,
wxRect(x2, y, width, 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("DrawCheckMark()", x1, y);
const wxSize sizeMark = renderer.GetCheckMarkSize(this);
renderer.DrawCheckMark(this, dc,
wxRect(wxPoint(x2, y), sizeMark), m_flags);
y += lineHeight + sizeMark.y;
const wxString notImplementedText = "(generic version unimplemented)";
dc.DrawText("DrawRadioBitmap()", x1, y);
if ( m_useGeneric )
dc.DrawText(notImplementedText, x2, y);
else
renderer.DrawRadioBitmap(this, dc,
wxRect(wxPoint(x2, y), sizeCheck), m_flags);
y += lineHeight + sizeCheck.y;
dc.DrawText("DrawCollapseButton()", x1, y);
const wxSize sizeCollapse = renderer.GetCollapseButtonSize(this, dc);
renderer.DrawCollapseButton(this, dc,
wxRect(wxPoint(x2, y), sizeCollapse), m_flags);
y += lineHeight + sizeCollapse.y;
dc.DrawText("DrawTreeItemButton()", x1, y);
const wxSize sizeExpand = renderer.GetExpanderSize(this);
renderer.DrawTreeItemButton(this, dc,
wxRect(wxPoint(x2, y), sizeExpand), m_flags);
y += lineHeight + sizeExpand.y;
#ifdef wxHAS_DRAW_TITLE_BAR_BITMAP
dc.DrawText("DrawTitleBarBitmap()", x1, y);
wxRect rBtn(x2, y, FromDIP(21), FromDIP(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
// The meanings of those are reversed for the vertical gauge below.
const wxCoord heightGauge = FromDIP(24);
const wxCoord widthGauge = 30*GetCharWidth();
dc.DrawText("DrawGauge()", x1, y);
renderer.DrawGauge(this, dc,
wxRect(x2, y, widthGauge, heightGauge), 25, 100, m_flags);
renderer.DrawGauge(this, dc,
wxRect(x2 + widthGauge + FromDIP(30), y + heightGauge - widthGauge,
heightGauge, widthGauge),
25, 100, m_flags | wxCONTROL_SPECIAL);
y += lineHeight + heightGauge;
dc.DrawText("DrawItemSelectionRect()", x1, y);
renderer.DrawItemSelectionRect(this, dc,
wxRect(x2, y, widthListItem, heightListItem), m_flags | wxCONTROL_SELECTED);
renderer.DrawItemText(this, dc, "DrawItemText()",
wxRect(x2, y, widthListItem, heightListItem).Inflate(-2, -2), m_align, m_flags | wxCONTROL_SELECTED);
y += heightListItem;
y += lineHeight;
dc.DrawText("DrawChoice()", x1, y);
if ( m_useGeneric )
dc.DrawText(notImplementedText, x2, y);
else
renderer.DrawChoice(this, dc,
wxRect(x2, y, width, GetCharHeight() * 3 / 2), m_flags);
}
int m_flags;
int m_align;
bool m_useIcon,
m_useBitmap,
m_useGeneric;
#if wxUSE_GRAPHICS_CONTEXT
wxGraphicsRenderer* m_renderer;
#endif
wxDECLARE_EVENT_TABLE();
};
#if wxUSE_GRAPHICS_CONTEXT
void MyPanel::UseGraphicRenderer(wxGraphicsRenderer* renderer)
{
m_renderer = renderer;
if ( renderer )
{
int major, minor, micro;
renderer->GetVersion(&major, &minor, &micro);
wxString str = wxString::Format("Graphics renderer: %s %i.%i.%i",
renderer->GetName(), major, minor, micro);
reinterpret_cast<wxFrame*>(GetParent())->GetStatusBar()->SetStatusText(str, 1);
}
else
{
reinterpret_cast<wxFrame*>(GetParent())->GetStatusBar()->SetStatusText(wxEmptyString, 1);
}
Refresh();
}
#endif // wxUSE_GRAPHICS_CONTEXT
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_DrawSpecial,
Render_AlignLeft,
Render_AlignCentre,
Render_AlignRight,
Render_UseIcon,
Render_UseBitmap,
Render_UseGeneric,
#if wxUSE_DYNLIB_CLASS
Render_Load,
Render_Unload,
#endif // wxUSE_DYNLIB_CLASS
Render_LayoutDir,
#if wxUSE_GRAPHICS_CONTEXT
DC_DC,
DC_GC_Default,
#if wxUSE_CAIRO
DC_GC_Cairo,
#endif // wxUSE_CAIRO
#ifdef __WXMSW__
#if wxUSE_GRAPHICS_GDIPLUS
DC_GC_GDIPlus,
#endif
#if wxUSE_GRAPHICS_DIRECT2D
DC_GC_Direct2D,
#endif
#endif // __WXMSW__
#endif // wxUSE_GRAPHICS_CONTEXT
// 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_DrawSpecial, MyFrame::OnDrawSpecial)
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)
EVT_MENU(Render_UseGeneric, MyFrame::OnUseGeneric)
#if wxUSE_DYNLIB_CLASS
EVT_MENU(Render_Load, MyFrame::OnLoad)
EVT_MENU(Render_Unload,MyFrame::OnUnload)
#endif // wxUSE_DYNLIB_CLASS
EVT_MENU(Render_LayoutDir, MyFrame::OnToggleLayoutDirection)
EVT_MENU(Render_Quit, MyFrame::OnQuit)
#if wxUSE_GRAPHICS_CONTEXT
EVT_MENU(DC_DC, MyFrame::OnGraphicContextNone)
EVT_MENU(DC_GC_Default, MyFrame::OnGraphicContextDefault)
#if wxUSE_CAIRO
EVT_MENU(DC_GC_Cairo, MyFrame::OnGraphicContextCairo)
#endif // wxUSE_CAIRO
#ifdef __WXMSW__
#if wxUSE_GRAPHICS_GDIPLUS
EVT_MENU(DC_GC_GDIPlus, MyFrame::OnGraphicContextGDIPlus)
#endif
#if wxUSE_GRAPHICS_DIRECT2D
EVT_MENU(DC_GC_Direct2D, MyFrame::OnGraphicContextDirect2D)
#endif
#endif // __WXMSW__
#endif // wxUSE_GRAPHICS_CONTEXT
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)
wxIMPLEMENT_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,
"Render wxWidgets Sample")
{
// 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->AppendCheckItem(Render_DrawSpecial,
"Draw in &special state\tCtrl-S");
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();
menuFile->AppendCheckItem(Render_UseGeneric, "Use &generic renderer\tCtrl-G");
#if wxUSE_DYNLIB_CLASS
menuFile->Append(Render_Load, "&Load renderer...\tCtrl-L");
menuFile->Append(Render_Unload, "&Unload renderer\tCtrl-U");
#endif // wxUSE_DYNLIB_CLASS
menuFile->AppendSeparator();
menuFile->AppendCheckItem(Render_LayoutDir, "Toggle &layout direction\tShift-Ctrl-L");
menuFile->Check(Render_LayoutDir, GetLayoutDirection() == wxLayout_RightToLeft);
menuFile->AppendSeparator();
menuFile->Append(Render_Quit);
#if wxUSE_GRAPHICS_CONTEXT
wxMenu* menuDC = new wxMenu;
// Number the different renderer choices consecutively, starting from 0.
int accel = 0;
menuDC->AppendRadioItem(DC_DC, wxString::Format("Use wx&DC\t%i", accel++));
menuDC->AppendRadioItem(DC_GC_Default, wxString::Format("Use default wx&GraphicContext\t%i", accel++));
#if wxUSE_CAIRO
menuDC->AppendRadioItem(DC_GC_Cairo, wxString::Format("Use &Cairo\t%i", accel++));
#endif // wxUSE_CAIRO
#ifdef __WXMSW__
#if wxUSE_GRAPHICS_GDIPLUS
menuDC->AppendRadioItem(DC_GC_GDIPlus, wxString::Format("Use &GDI+\t%i", accel++));
#endif
#if wxUSE_GRAPHICS_DIRECT2D
menuDC->AppendRadioItem(DC_GC_Direct2D,wxString::Format("Use &Direct2D\t%i", accel++));
#endif
#endif // __WXMSW__
#endif // wxUSE_GRAPHICS_CONTEXT
// 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, "&File");
#if wxUSE_GRAPHICS_CONTEXT
menuBar->Append(menuDC, "&DC");
#endif // wxUSE_GRAPHICS_CONTEXT
menuBar->Append(helpMenu, "&Help");
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
#endif // wxUSE_MENUS
m_panel = new MyPanel(this);
SetClientSize(600, 600);
#if wxUSE_STATUSBAR
// create a status bar just for fun (by default with 1 pane only)
CreateStatusBar(2);
SetStatusText("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();
}
void MyFrame::OnUseGeneric(wxCommandEvent& event)
{
m_panel->SetUseGeneric(event.IsChecked());
m_panel->Refresh();
}
#if wxUSE_DYNLIB_CLASS
void MyFrame::OnLoad(wxCommandEvent& WXUNUSED(event))
{
static wxString s_name = "renddll";
wxString name = wxGetTextFromUser
(
"Name of the renderer to load:",
"Render wxWidgets Sample",
s_name,
this
);
if ( name.empty() )
{
// cancelled
return;
}
s_name = name;
wxRendererNative *renderer = wxRendererNative::Load(name);
if ( !renderer )
{
wxLogError("Failed to load renderer \"%s\".", name);
}
else // loaded ok
{
delete wxRendererNative::Set(renderer);
m_panel->Refresh();
wxLogStatus(this, "Successfully loaded the renderer \"%s\".",
name);
}
}
void MyFrame::OnUnload(wxCommandEvent& WXUNUSED(event))
{
wxRendererNative *renderer = wxRendererNative::Set(NULL);
if ( renderer )
{
delete renderer;
m_panel->Refresh();
wxLogStatus(this, "Unloaded the previously loaded renderer.");
}
else
{
wxLogWarning("No renderer to unload.");
}
}
#endif // wxUSE_DYNLIB_CLASS
void MyFrame::OnToggleLayoutDirection(wxCommandEvent& WXUNUSED(evt))
{
wxLayoutDirection dir = GetLayoutDirection() == wxLayout_LeftToRight
? wxLayout_RightToLeft : wxLayout_LeftToRight;
SetLayoutDirection(dir);
GetStatusBar()->SetLayoutDirection(dir);
m_panel->SetLayoutDirection(dir);
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// true is to force the frame to close
Close(true);
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
wxMessageBox("Render sample shows how to use custom renderers.\n"
"\n"
"(c) 2003 Vadim Zeitlin",
"About Render wxWidgets Sample",
wxOK | wxICON_INFORMATION, this);
}
#if wxUSE_GRAPHICS_CONTEXT
void MyFrame::OnGraphicContextNone(wxCommandEvent& WXUNUSED(evt))
{
m_panel->UseGraphicRenderer(NULL);
}
void MyFrame::OnGraphicContextDefault(wxCommandEvent& WXUNUSED(evt))
{
m_panel->UseGraphicRenderer(wxGraphicsRenderer::GetDefaultRenderer());
}
#if wxUSE_CAIRO
void MyFrame::OnGraphicContextCairo(wxCommandEvent& WXUNUSED(evt))
{
m_panel->UseGraphicRenderer(wxGraphicsRenderer::GetCairoRenderer());
}
#endif // wxUSE_CAIRO
#ifdef __WXMSW__
#if wxUSE_GRAPHICS_GDIPLUS
void MyFrame::OnGraphicContextGDIPlus(wxCommandEvent& WXUNUSED(evt))
{
m_panel->UseGraphicRenderer(wxGraphicsRenderer::GetGDIPlusRenderer());
}
#endif
#if wxUSE_GRAPHICS_DIRECT2D
void MyFrame::OnGraphicContextDirect2D(wxCommandEvent& WXUNUSED(evt))
{
m_panel->UseGraphicRenderer(wxGraphicsRenderer::GetDirect2DRenderer());
}
#endif
#endif // __WXMSW__
#endif // wxUSE_GRAPHICS_CONTEXT
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