| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/gtk1/glcanvas.cpp |
| 3 | // Purpose: wxGLCanvas, for using OpenGL/Mesa with wxWidgets and GTK |
| 4 | // Author: Robert Roebling |
| 5 | // Modified by: |
| 6 | // Created: 17/08/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Robert Roebling |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // For compilers that support precompilation, includes "wx.h". |
| 13 | #include "wx/wxprec.h" |
| 14 | |
| 15 | #if wxUSE_GLCANVAS |
| 16 | |
| 17 | #include "wx/glcanvas.h" |
| 18 | |
| 19 | #ifndef WX_PRECOMP |
| 20 | #include "wx/app.h" |
| 21 | #include "wx/frame.h" |
| 22 | #include "wx/colour.h" |
| 23 | #include "wx/module.h" |
| 24 | #endif // WX_PRECOMP |
| 25 | |
| 26 | extern "C" |
| 27 | { |
| 28 | #include "gtk/gtk.h" |
| 29 | #include "gdk/gdk.h" |
| 30 | #include "gdk/gdkx.h" |
| 31 | } |
| 32 | |
| 33 | #include "wx/gtk1/win_gtk.h" |
| 34 | #include "wx/gtk1/private.h" |
| 35 | |
| 36 | //----------------------------------------------------------------------------- |
| 37 | // idle system |
| 38 | //----------------------------------------------------------------------------- |
| 39 | |
| 40 | extern void wxapp_install_idle_handler(); |
| 41 | extern bool g_isIdle; |
| 42 | |
| 43 | #if WXWIN_COMPATIBILITY_2_8 |
| 44 | |
| 45 | //----------------------------------------------------------------------------- |
| 46 | // "realize" from m_wxwindow: used to create m_glContext implicitly |
| 47 | //----------------------------------------------------------------------------- |
| 48 | |
| 49 | extern "C" { |
| 50 | static gint |
| 51 | gtk_glwindow_realized_callback( GtkWidget *WXUNUSED(widget), wxGLCanvas *win ) |
| 52 | { |
| 53 | win->GTKInitImplicitContext(); |
| 54 | |
| 55 | return FALSE; |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | #endif // WXWIN_COMPATIBILITY_2_8 |
| 60 | |
| 61 | //----------------------------------------------------------------------------- |
| 62 | // "map" from m_wxwindow |
| 63 | //----------------------------------------------------------------------------- |
| 64 | |
| 65 | extern "C" { |
| 66 | static gint |
| 67 | gtk_glwindow_map_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win ) |
| 68 | { |
| 69 | wxPaintEvent event( win->GetId() ); |
| 70 | event.SetEventObject( win ); |
| 71 | win->HandleWindowEvent( event ); |
| 72 | |
| 73 | win->GetUpdateRegion().Clear(); |
| 74 | |
| 75 | return FALSE; |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | //----------------------------------------------------------------------------- |
| 80 | // "expose_event" of m_wxwindow |
| 81 | //----------------------------------------------------------------------------- |
| 82 | |
| 83 | extern "C" { |
| 84 | static void |
| 85 | gtk_glwindow_expose_callback( GtkWidget *WXUNUSED(widget), GdkEventExpose *gdk_event, wxGLCanvas *win ) |
| 86 | { |
| 87 | if (g_isIdle) |
| 88 | wxapp_install_idle_handler(); |
| 89 | |
| 90 | win->GetUpdateRegion().Union( gdk_event->area.x, |
| 91 | gdk_event->area.y, |
| 92 | gdk_event->area.width, |
| 93 | gdk_event->area.height ); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | //----------------------------------------------------------------------------- |
| 98 | // "draw" of m_wxwindow |
| 99 | //----------------------------------------------------------------------------- |
| 100 | |
| 101 | extern "C" { |
| 102 | static void |
| 103 | gtk_glwindow_draw_callback( GtkWidget *WXUNUSED(widget), GdkRectangle *rect, wxGLCanvas *win ) |
| 104 | { |
| 105 | if (g_isIdle) |
| 106 | wxapp_install_idle_handler(); |
| 107 | |
| 108 | win->GetUpdateRegion().Union( rect->x, rect->y, |
| 109 | rect->width, rect->height ); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | //----------------------------------------------------------------------------- |
| 114 | // "size_allocate" of m_wxwindow |
| 115 | //----------------------------------------------------------------------------- |
| 116 | |
| 117 | extern "C" { |
| 118 | static void |
| 119 | gtk_glcanvas_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxGLCanvas *win ) |
| 120 | { |
| 121 | if (g_isIdle) |
| 122 | wxapp_install_idle_handler(); |
| 123 | |
| 124 | if (!win->m_hasVMT) |
| 125 | return; |
| 126 | |
| 127 | wxSizeEvent event( wxSize(win->m_width,win->m_height), win->GetId() ); |
| 128 | event.SetEventObject( win ); |
| 129 | win->HandleWindowEvent( event ); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | //--------------------------------------------------------------------------- |
| 134 | // wxGlCanvas |
| 135 | //--------------------------------------------------------------------------- |
| 136 | |
| 137 | IMPLEMENT_CLASS(wxGLCanvas, wxWindow) |
| 138 | |
| 139 | wxGLCanvas::wxGLCanvas(wxWindow *parent, |
| 140 | wxWindowID id, |
| 141 | const int *attribList, |
| 142 | const wxPoint& pos, |
| 143 | const wxSize& size, |
| 144 | long style, |
| 145 | const wxString& name, |
| 146 | const wxPalette& palette) |
| 147 | #if WXWIN_COMPATIBILITY_2_8 |
| 148 | : m_createImplicitContext(false) |
| 149 | #endif |
| 150 | { |
| 151 | Create(parent, id, pos, size, style, name, attribList, palette); |
| 152 | } |
| 153 | |
| 154 | #if WXWIN_COMPATIBILITY_2_8 |
| 155 | |
| 156 | wxGLCanvas::wxGLCanvas(wxWindow *parent, |
| 157 | wxWindowID id, |
| 158 | const wxPoint& pos, |
| 159 | const wxSize& size, |
| 160 | long style, |
| 161 | const wxString& name, |
| 162 | const int *attribList, |
| 163 | const wxPalette& palette) |
| 164 | : m_createImplicitContext(true) |
| 165 | { |
| 166 | Create(parent, id, pos, size, style, name, attribList, palette); |
| 167 | } |
| 168 | |
| 169 | wxGLCanvas::wxGLCanvas(wxWindow *parent, |
| 170 | const wxGLContext *shared, |
| 171 | wxWindowID id, |
| 172 | const wxPoint& pos, |
| 173 | const wxSize& size, |
| 174 | long style, |
| 175 | const wxString& name, |
| 176 | const int *attribList, |
| 177 | const wxPalette& palette) |
| 178 | : m_createImplicitContext(true) |
| 179 | { |
| 180 | m_sharedContext = const_cast<wxGLContext *>(shared); |
| 181 | |
| 182 | Create(parent, id, pos, size, style, name, attribList, palette); |
| 183 | } |
| 184 | |
| 185 | wxGLCanvas::wxGLCanvas(wxWindow *parent, |
| 186 | const wxGLCanvas *shared, |
| 187 | wxWindowID id, |
| 188 | const wxPoint& pos, const wxSize& size, |
| 189 | long style, const wxString& name, |
| 190 | const int *attribList, |
| 191 | const wxPalette& palette ) |
| 192 | : m_createImplicitContext(true) |
| 193 | { |
| 194 | m_sharedContextOf = const_cast<wxGLCanvas *>(shared); |
| 195 | |
| 196 | Create(parent, id, pos, size, style, name, attribList, palette); |
| 197 | } |
| 198 | |
| 199 | #endif // WXWIN_COMPATIBILITY_2_8 |
| 200 | |
| 201 | bool wxGLCanvas::Create(wxWindow *parent, |
| 202 | wxWindowID id, |
| 203 | const wxPoint& pos, |
| 204 | const wxSize& size, |
| 205 | long style, |
| 206 | const wxString& name, |
| 207 | const int *attribList, |
| 208 | const wxPalette& palette) |
| 209 | { |
| 210 | m_noExpose = true; |
| 211 | m_nativeSizeEvent = true; |
| 212 | |
| 213 | if ( !InitVisual(attribList) ) |
| 214 | return false; |
| 215 | |
| 216 | GdkVisual *visual = gdkx_visual_get( GetXVisualInfo()->visualid ); |
| 217 | GdkColormap *colormap = gdk_colormap_new( visual, TRUE ); |
| 218 | |
| 219 | gtk_widget_push_colormap( colormap ); |
| 220 | gtk_widget_push_visual( visual ); |
| 221 | |
| 222 | wxWindow::Create( parent, id, pos, size, style, name ); |
| 223 | m_glWidget = m_wxwindow; |
| 224 | |
| 225 | gtk_pizza_set_clear( GTK_PIZZA(m_wxwindow), FALSE ); |
| 226 | |
| 227 | #if WXWIN_COMPATIBILITY_2_8 |
| 228 | gtk_signal_connect( GTK_OBJECT(m_wxwindow), "realize", |
| 229 | GTK_SIGNAL_FUNC(gtk_glwindow_realized_callback), (gpointer) this); |
| 230 | #endif // WXWIN_COMPATIBILITY_2_8 |
| 231 | |
| 232 | gtk_signal_connect( GTK_OBJECT(m_wxwindow), "map", |
| 233 | GTK_SIGNAL_FUNC(gtk_glwindow_map_callback), (gpointer) this); |
| 234 | |
| 235 | gtk_signal_connect( GTK_OBJECT(m_wxwindow), "expose_event", |
| 236 | GTK_SIGNAL_FUNC(gtk_glwindow_expose_callback), (gpointer) this); |
| 237 | |
| 238 | gtk_signal_connect( GTK_OBJECT(m_wxwindow), "draw", |
| 239 | GTK_SIGNAL_FUNC(gtk_glwindow_draw_callback), (gpointer) this); |
| 240 | |
| 241 | gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate", |
| 242 | GTK_SIGNAL_FUNC(gtk_glcanvas_size_callback), (gpointer) this); |
| 243 | |
| 244 | gtk_widget_pop_visual(); |
| 245 | |
| 246 | gtk_widget_pop_colormap(); |
| 247 | |
| 248 | #if WXWIN_COMPATIBILITY_2_8 |
| 249 | // if our parent window is already visible, we had been realized before we |
| 250 | // connected to the "realize" signal and hence our m_glContext hasn't been |
| 251 | // initialized yet and we have to do it now |
| 252 | if (GTK_WIDGET_REALIZED(m_wxwindow)) |
| 253 | gtk_glwindow_realized_callback( m_wxwindow, this ); |
| 254 | #endif // WXWIN_COMPATIBILITY_2_8 |
| 255 | |
| 256 | if (GTK_WIDGET_MAPPED(m_wxwindow)) |
| 257 | gtk_glwindow_map_callback( m_wxwindow, this ); |
| 258 | |
| 259 | return true; |
| 260 | } |
| 261 | |
| 262 | Window wxGLCanvas::GetXWindow() const |
| 263 | { |
| 264 | GdkWindow *window = GTK_PIZZA(m_wxwindow)->bin_window; |
| 265 | return window ? GDK_WINDOW_XWINDOW(window) : 0; |
| 266 | } |
| 267 | |
| 268 | void wxGLCanvas::OnInternalIdle() |
| 269 | { |
| 270 | if (!m_updateRegion.IsEmpty()) |
| 271 | { |
| 272 | wxPaintEvent event( GetId() ); |
| 273 | event.SetEventObject( this ); |
| 274 | HandleWindowEvent( event ); |
| 275 | |
| 276 | GetUpdateRegion().Clear(); |
| 277 | } |
| 278 | |
| 279 | wxWindow::OnInternalIdle(); |
| 280 | } |
| 281 | |
| 282 | #if WXWIN_COMPATIBILITY_2_8 |
| 283 | |
| 284 | void wxGLCanvas::GTKInitImplicitContext() |
| 285 | { |
| 286 | if ( !m_glContext && m_createImplicitContext ) |
| 287 | { |
| 288 | wxGLContext *share = m_sharedContext; |
| 289 | if ( !share && m_sharedContextOf ) |
| 290 | share = m_sharedContextOf->m_glContext; |
| 291 | |
| 292 | m_glContext = new wxGLContext(this, share); |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | #endif // WXWIN_COMPATIBILITY_2_8 |
| 297 | |
| 298 | #endif // wxUSE_GLCANVAS |