35f1f4f7ea
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@46536 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
120 lines
3.0 KiB
C++
120 lines
3.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: src/common/glcmn.cpp
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// Purpose: wxGLCanvasBase implementation
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// Author: Vadim Zeitlin
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// Created: 2007-04-09
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// RCS-ID: $Id$
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// Copyright: (c) 2007 Vadim Zeitlin <vadim@wxwindows.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.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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#if wxUSE_GLCANVAS
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#ifndef WX_PRECOMP
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#include "wx/log.h"
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#endif // WX_PRECOMP
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#include "wx/glcanvas.h"
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// DLL options compatibility check:
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#include "wx/build.h"
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WX_CHECK_BUILD_OPTIONS("wxGL")
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IMPLEMENT_CLASS(wxGLApp, wxApp)
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// ============================================================================
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// implementation
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// ============================================================================
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wxGLCanvasBase::wxGLCanvasBase()
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{
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#if WXWIN_COMPATIBILITY_2_8
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m_glContext = NULL;
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#endif
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// we always paint background entirely ourselves so prevent wx from erasing
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// it to avoid flicker
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SetBackgroundStyle(wxBG_STYLE_CUSTOM);
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}
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void wxGLCanvasBase::SetCurrent(const wxGLContext& context) const
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{
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// although on MSW it works even if the window is still hidden, it doesn't
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// work in other ports (notably X11-based ones) and documentation mentions
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// that SetCurrent() can only be called for a shown window, so check for it
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wxASSERT_MSG( IsShownOnScreen(), _T("can't make hidden GL canvas current") );
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context.SetCurrent(*wx_static_cast(const wxGLCanvas *, this));
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}
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bool wxGLCanvasBase::SetColour(const wxString& colour)
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{
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wxColour col = wxTheColourDatabase->Find(colour);
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if ( !col.Ok() )
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return false;
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GLboolean isRGBA;
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glGetBooleanv(GL_RGBA_MODE, &isRGBA);
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if ( isRGBA )
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{
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glColor3f(col.Red() / 256., col.Green() / 256., col.Blue() / 256.);
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}
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else // indexed colour
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{
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GLint pix = GetColourIndex(col);
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if ( pix == -1 )
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{
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wxLogError(_("Failed to allocate colour for OpenGL"));
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return false;
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}
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glIndexi(pix);
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}
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return true;
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}
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wxGLCanvasBase::~wxGLCanvasBase()
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{
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#if WXWIN_COMPATIBILITY_2_8
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delete m_glContext;
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#endif // WXWIN_COMPATIBILITY_2_8
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}
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#if WXWIN_COMPATIBILITY_2_8
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wxGLContext *wxGLCanvasBase::GetContext() const
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{
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return m_glContext;
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}
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void wxGLCanvasBase::SetCurrent()
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{
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if ( m_glContext )
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SetCurrent(*m_glContext);
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}
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void wxGLCanvasBase::OnSize(wxSizeEvent& WXUNUSED(event))
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{
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}
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#endif // WXWIN_COMPATIBILITY_2_8
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#endif // wxUSE_GLCANVAS
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