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