src/gtk/dcscreen.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dcscreen.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "dcscreen.h"
  12 #endif
  13
  14 #include "wx/dcscreen.h"
  15 #include "wx/window.h"
  16
  17 //-----------------------------------------------------------------------------
  18 // global data initialization
  19 //-----------------------------------------------------------------------------
  20
  21 GdkWindow *wxScreenDC::sm_overlayWindow  = (GdkWindow*) NULL;
  22        int wxScreenDC::sm_overlayWindowX = 0;
  23        int wxScreenDC::sm_overlayWindowY = 0;
  24
  25
  26 //-----------------------------------------------------------------------------
  27 // create X window
  28 //-----------------------------------------------------------------------------
  29
  30 extern "C" {
  31
  32 #include "gdk/gdk.h"
  33 #include "gdk/gdkprivate.h"
  34 #include "gdk/gdkx.h"
  35 #include <netinet/in.h>
  36
  37 int my_nevent_masks = 17;
  38 int my_event_masks_table[19] =
  39 {
  40   ExposureMask,
  41   PointerMotionMask,
  42   PointerMotionHintMask,
  43   ButtonMotionMask,
  44   Button1MotionMask,
  45   Button2MotionMask,
  46   Button3MotionMask,
  47   ButtonPressMask | OwnerGrabButtonMask,
  48   ButtonReleaseMask | OwnerGrabButtonMask,
  49   KeyPressMask,
  50   KeyReleaseMask,
  51   EnterWindowMask,
  52   LeaveWindowMask,
  53   FocusChangeMask,
  54   StructureNotifyMask,
  55   PropertyChangeMask,
  56   VisibilityChangeMask,
  57   0,                            /* PROXIMITY_IN */
  58   0                             /* PROXIMTY_OUT */
  59 };
  60
  61 GdkWindow*
  62 gdk_window_transparent_new ( GdkWindow     *parent,
  63                              GdkWindowAttr *attributes,
  64                              gint           attributes_mask)
  65 {
  66   GdkWindow *window;
  67   GdkWindowPrivate *gprivate;
  68   GdkWindowPrivate *parent_private;
  69   GdkVisual *visual;
  70   Display *parent_display;
  71   Window xparent;
  72   Visual *xvisual;
  73   XSetWindowAttributes xattributes;
  74   long xattributes_mask;
  75   XSizeHints size_hints;
  76   XWMHints wm_hints;
  77   XClassHint *class_hint;
  78   int x, y, depth;
  79   unsigned int gclass;
  80   char *title;
  81   int i;
  82
  83   g_return_val_if_fail (attributes != NULL, NULL);
  84
  85   if (!parent)
  86     parent = (GdkWindow*) &gdk_root_parent;
  87
  88   parent_private = (GdkWindowPrivate*) parent;
  89   if (parent_private->destroyed)
  90     return NULL;
  91
  92   xparent = parent_private->xwindow;
  93   parent_display = parent_private->xdisplay;
  94
  95   gprivate = g_new (GdkWindowPrivate, 1);
  96   window = (GdkWindow*) gprivate;
  97
  98   gprivate->parent = parent;
  99
 100   if (parent_private != &gdk_root_parent)
 101     parent_private->children = g_list_prepend (parent_private->children, window);
 102
 103   gprivate->xdisplay = parent_display;
 104   gprivate->destroyed = FALSE;
 105   gprivate->resize_count = 0;
 106   gprivate->ref_count = 1;
 107   xattributes_mask = 0;
 108
 109   if (attributes_mask & GDK_WA_X)
 110     x = attributes->x;
 111   else
 112     x = 0;
 113
 114   if (attributes_mask & GDK_WA_Y)
 115     y = attributes->y;
 116   else
 117     y = 0;
 118
 119   gprivate->x = x;
 120   gprivate->y = y;
 121   gprivate->width = (attributes->width > 1) ? (attributes->width) : (1);
 122   gprivate->height = (attributes->height > 1) ? (attributes->height) : (1);
 123   gprivate->window_type = attributes->window_type;
 124   gprivate->extension_events = FALSE;
 125
 126 #ifndef NEW_GTK_DND_CODE
 127   gprivate->dnd_drag_data_type = None;
 128   gprivate->dnd_drag_data_typesavail =
 129     gprivate->dnd_drop_data_typesavail = NULL;
 130   gprivate->dnd_drop_enabled = gprivate->dnd_drag_enabled =
 131     gprivate->dnd_drag_accepted = gprivate->dnd_drag_datashow =
 132     gprivate->dnd_drop_data_numtypesavail =
 133     gprivate->dnd_drag_data_numtypesavail = 0;
 134   gprivate->dnd_drag_eventmask = gprivate->dnd_drag_savedeventmask = 0;
 135 #endif
 136
 137   gprivate->filters = NULL;
 138   gprivate->children = NULL;
 139
 140   window->user_data = NULL;
 141
 142   if (attributes_mask & GDK_WA_VISUAL)
 143     visual = attributes->visual;
 144   else
 145     visual = gdk_visual_get_system ();
 146   xvisual = ((GdkVisualPrivate*) visual)->xvisual;
 147
 148   xattributes.event_mask = StructureNotifyMask;
 149   for (i = 0; i < my_nevent_masks; i++)
 150     {
 151       if (attributes->event_mask & (1 << (i + 1)))
 152         xattributes.event_mask |= my_event_masks_table[i];
 153     }
 154
 155   if (xattributes.event_mask)
 156     xattributes_mask |= CWEventMask;
 157
 158   if(attributes_mask & GDK_WA_NOREDIR) {
 159         xattributes.override_redirect =
 160                 (attributes->override_redirect == FALSE)?False:True;
 161         xattributes_mask |= CWOverrideRedirect;
 162   } else
 163     xattributes.override_redirect = False;
 164
 165       gclass = InputOutput;
 166       depth = visual->depth;
 167
 168       if (attributes_mask & GDK_WA_COLORMAP)
 169         gprivate->colormap = attributes->colormap;
 170       else
 171         gprivate->colormap = gdk_colormap_get_system ();
 172
 173           xattributes.colormap = ((GdkColormapPrivate*) gprivate->colormap)->xcolormap;
 174           xattributes_mask |= CWColormap;
 175
 176           xparent = gdk_root_window;
 177
 178           xattributes.save_under = True;
 179           xattributes.override_redirect = True;
 180           xattributes.cursor = None;
 181           xattributes_mask |= CWSaveUnder | CWOverrideRedirect;
 182
 183   gprivate->xwindow = XCreateWindow (gprivate->xdisplay, xparent,
 184                                     x, y, gprivate->width, gprivate->height,
 185                                     0, depth, gclass, xvisual,
 186                                     xattributes_mask, &xattributes);
 187   gdk_window_ref (window);
 188   gdk_xid_table_insert (&gprivate->xwindow, window);
 189
 190   if (gprivate->colormap)
 191     gdk_colormap_ref (gprivate->colormap);
 192
 193       XSetWMProtocols (gprivate->xdisplay, gprivate->xwindow, gdk_wm_window_protocols, 2);
 194
 195   size_hints.flags = PSize;
 196   size_hints.width = gprivate->width;
 197   size_hints.height = gprivate->height;
 198
 199   wm_hints.flags = InputHint | StateHint | WindowGroupHint;
 200   wm_hints.window_group = gdk_leader_window;
 201   wm_hints.input = True;
 202   wm_hints.initial_state = NormalState;
 203
 204   /* FIXME: Is there any point in doing this? Do any WM's pay
 205    * attention to PSize, and even if they do, is this the
 206    * correct value???
 207    */
 208   XSetWMNormalHints (gprivate->xdisplay, gprivate->xwindow, &size_hints);
 209
 210   XSetWMHints (gprivate->xdisplay, gprivate->xwindow, &wm_hints);
 211
 212   if (attributes_mask & GDK_WA_TITLE)
 213     title = attributes->title;
 214   else
 215 #if (GTK_MINOR_VERSION == 1)
 216     title = "Unknown"; // GLH: Well I don't know for the moment what to write here.
 217 #else
 218     title = gdk_progname;
 219 #endif
 220
 221   XmbSetWMProperties (gprivate->xdisplay, gprivate->xwindow,
 222                       title, title,
 223                       NULL, 0,
 224                       NULL, NULL, NULL);
 225
 226   if (attributes_mask & GDK_WA_WMCLASS)
 227     {
 228       class_hint = XAllocClassHint ();
 229       class_hint->res_name = attributes->wmclass_name;
 230       class_hint->res_class = attributes->wmclass_class;
 231       XSetClassHint (gprivate->xdisplay, gprivate->xwindow, class_hint);
 232       XFree (class_hint);
 233     }
 234
 235   return window;
 236 }
 237
 238 } // extern "C"
 239
 240 //-----------------------------------------------------------------------------
 241 // wxScreenDC
 242 //-----------------------------------------------------------------------------
 243
 244 IMPLEMENT_DYNAMIC_CLASS(wxScreenDC,wxPaintDC)
 245
 246 wxScreenDC::wxScreenDC(void)
 247 {
 248   m_ok = FALSE;
 249   m_window = (GdkWindow *) NULL;
 250   m_cmap = gdk_colormap_get_system();
 251
 252   if (sm_overlayWindow)
 253   {
 254     m_window = sm_overlayWindow;
 255     m_deviceOriginX = - sm_overlayWindowX;
 256     m_deviceOriginY = - sm_overlayWindowY;
 257   }
 258   else
 259     m_window = GDK_ROOT_PARENT();
 260
 261   SetUpDC();
 262
 263   gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
 264   gdk_gc_set_subwindow( m_brushGC, GDK_INCLUDE_INFERIORS );
 265   gdk_gc_set_subwindow( m_textGC, GDK_INCLUDE_INFERIORS );
 266   gdk_gc_set_subwindow( m_bgGC, GDK_INCLUDE_INFERIORS );
 267 }
 268
 269 wxScreenDC::~wxScreenDC(void)
 270 {
 271   EndDrawingOnTop();
 272 }
 273
 274 bool wxScreenDC::StartDrawingOnTop( wxWindow *window )
 275 {
 276   if (!window) return StartDrawingOnTop();
 277
 278   int x = 0;
 279   int y = 0;
 280   window->GetPosition( &x, &y );
 281   int w = 0;
 282   int h = 0;
 283   window->GetSize( &w, &h );
 284   window->ClientToScreen( &x, &y );
 285
 286   wxRect rect;
 287   rect.x = x;
 288   rect.y = y;
 289   rect.width = 0;
 290   rect.height = 0;
 291
 292   return StartDrawingOnTop( &rect );
 293 }
 294
 295 bool wxScreenDC::StartDrawingOnTop( wxRect *rect )
 296 {
 297   int x = 0;
 298   int y = 0;
 299   int width = gdk_screen_width();
 300   int height = gdk_screen_height();
 301   if (rect)
 302   {
 303     x = rect->x;
 304     y = rect->y;
 305     width = rect->width;
 306     height = rect->height;
 307   }
 308
 309   sm_overlayWindowX = x;
 310   sm_overlayWindowY = y;
 311
 312   GdkWindowAttr attr;
 313   attr.x = x;
 314   attr.y = y;
 315   attr.width = width;
 316   attr.height = height;
 317   attr.override_redirect = TRUE;
 318   attr.wclass = GDK_INPUT_OUTPUT;
 319   attr.event_mask = 0;
 320   attr.window_type = GDK_WINDOW_TEMP;
 321
 322   // GTK cannot set transparent backgrounds. :-(
 323   sm_overlayWindow = gdk_window_transparent_new( NULL, &attr, GDK_WA_NOREDIR | GDK_WA_X | GDK_WA_Y );
 324
 325   if (sm_overlayWindow) gdk_window_show( sm_overlayWindow );
 326
 327   return (sm_overlayWindow);
 328 }
 329
 330 bool wxScreenDC::EndDrawingOnTop(void)
 331 {
 332   if (sm_overlayWindow) gdk_window_destroy( sm_overlayWindow );
 333
 334   sm_overlayWindow = NULL;
 335   sm_overlayWindowX = 0;
 336   sm_overlayWindowY = 0;
 337
 338   return TRUE;
 339 }
 340