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   gprivate->dnd_drag_data_type = None;
 126   gprivate->dnd_drag_data_typesavail =
 127     gprivate->dnd_drop_data_typesavail = NULL;
 128   gprivate->dnd_drop_enabled = gprivate->dnd_drag_enabled =
 129     gprivate->dnd_drag_accepted = gprivate->dnd_drag_datashow =
 130     gprivate->dnd_drop_data_numtypesavail =
 131     gprivate->dnd_drag_data_numtypesavail = 0;
 132   gprivate->dnd_drag_eventmask = gprivate->dnd_drag_savedeventmask = 0;
 133
 134   gprivate->filters = NULL;
 135   gprivate->children = NULL;
 136
 137   window->user_data = NULL;
 138
 139   if (attributes_mask & GDK_WA_VISUAL)
 140     visual = attributes->visual;
 141   else
 142     visual = gdk_visual_get_system ();
 143   xvisual = ((GdkVisualPrivate*) visual)->xvisual;
 144
 145   xattributes.event_mask = StructureNotifyMask;
 146   for (i = 0; i < my_nevent_masks; i++)
 147     {
 148       if (attributes->event_mask & (1 << (i + 1)))
 149         xattributes.event_mask |= my_event_masks_table[i];
 150     }
 151
 152   if (xattributes.event_mask)
 153     xattributes_mask |= CWEventMask;
 154
 155   if(attributes_mask & GDK_WA_NOREDIR) {
 156         xattributes.override_redirect =
 157                 (attributes->override_redirect == FALSE)?False:True;
 158         xattributes_mask |= CWOverrideRedirect;
 159   } else
 160     xattributes.override_redirect = False;
 161
 162       gclass = InputOutput;
 163       depth = visual->depth;
 164
 165       if (attributes_mask & GDK_WA_COLORMAP)
 166         gprivate->colormap = attributes->colormap;
 167       else
 168         gprivate->colormap = gdk_colormap_get_system ();
 169
 170           xattributes.colormap = ((GdkColormapPrivate*) gprivate->colormap)->xcolormap;
 171           xattributes_mask |= CWColormap;
 172
 173           xparent = gdk_root_window;
 174
 175           xattributes.save_under = True;
 176           xattributes.override_redirect = True;
 177           xattributes.cursor = None;
 178           xattributes_mask |= CWSaveUnder | CWOverrideRedirect;
 179
 180   gprivate->xwindow = XCreateWindow (gprivate->xdisplay, xparent,
 181                                     x, y, gprivate->width, gprivate->height,
 182                                     0, depth, gclass, xvisual,
 183                                     xattributes_mask, &xattributes);
 184   gdk_window_ref (window);
 185   gdk_xid_table_insert (&gprivate->xwindow, window);
 186
 187   if (gprivate->colormap)
 188     gdk_colormap_ref (gprivate->colormap);
 189
 190       XSetWMProtocols (gprivate->xdisplay, gprivate->xwindow, gdk_wm_window_protocols, 2);
 191
 192   size_hints.flags = PSize;
 193   size_hints.width = gprivate->width;
 194   size_hints.height = gprivate->height;
 195
 196   wm_hints.flags = InputHint | StateHint | WindowGroupHint;
 197   wm_hints.window_group = gdk_leader_window;
 198   wm_hints.input = True;
 199   wm_hints.initial_state = NormalState;
 200
 201   /* FIXME: Is there any point in doing this? Do any WM's pay
 202    * attention to PSize, and even if they do, is this the
 203    * correct value???
 204    */
 205   XSetWMNormalHints (gprivate->xdisplay, gprivate->xwindow, &size_hints);
 206
 207   XSetWMHints (gprivate->xdisplay, gprivate->xwindow, &wm_hints);
 208
 209   if (attributes_mask & GDK_WA_TITLE)
 210     title = attributes->title;
 211   else
 212 #if (GTK_MINOR_VERSION == 1)
 213     title = "Unknown"; // GLH: Well I don't know for the moment what to write here.
 214 #else
 215     title = gdk_progname;
 216 #endif
 217
 218   XmbSetWMProperties (gprivate->xdisplay, gprivate->xwindow,
 219                       title, title,
 220                       NULL, 0,
 221                       NULL, NULL, NULL);
 222
 223   if (attributes_mask & GDK_WA_WMCLASS)
 224     {
 225       class_hint = XAllocClassHint ();
 226       class_hint->res_name = attributes->wmclass_name;
 227       class_hint->res_class = attributes->wmclass_class;
 228       XSetClassHint (gprivate->xdisplay, gprivate->xwindow, class_hint);
 229       XFree (class_hint);
 230     }
 231
 232   return window;
 233 }
 234
 235 } // extern "C"
 236
 237 //-----------------------------------------------------------------------------
 238 // wxScreenDC
 239 //-----------------------------------------------------------------------------
 240
 241 IMPLEMENT_DYNAMIC_CLASS(wxScreenDC,wxPaintDC)
 242
 243 wxScreenDC::wxScreenDC(void)
 244 {
 245   m_ok = FALSE;
 246   m_window = (GdkWindow *) NULL;
 247   m_cmap = gdk_colormap_get_system();
 248
 249   if (sm_overlayWindow)
 250   {
 251     m_window = sm_overlayWindow;
 252     m_deviceOriginX = - sm_overlayWindowX;
 253     m_deviceOriginY = - sm_overlayWindowY;
 254   }
 255   else
 256     m_window = GDK_ROOT_PARENT();
 257
 258   SetUpDC();
 259
 260   gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
 261   gdk_gc_set_subwindow( m_brushGC, GDK_INCLUDE_INFERIORS );
 262   gdk_gc_set_subwindow( m_textGC, GDK_INCLUDE_INFERIORS );
 263   gdk_gc_set_subwindow( m_bgGC, GDK_INCLUDE_INFERIORS );
 264 }
 265
 266 wxScreenDC::~wxScreenDC(void)
 267 {
 268   EndDrawingOnTop();
 269 }
 270
 271 bool wxScreenDC::StartDrawingOnTop( wxWindow *window )
 272 {
 273   if (!window) return StartDrawingOnTop();
 274
 275   int x = 0;
 276   int y = 0;
 277   window->GetPosition( &x, &y );
 278   int w = 0;
 279   int h = 0;
 280   window->GetSize( &w, &h );
 281   window->ClientToScreen( &x, &y );
 282
 283   wxRectangle rect;
 284   rect.x = x;
 285   rect.y = y;
 286   rect.width = 0;
 287   rect.height = 0;
 288
 289   return StartDrawingOnTop( &rect );
 290 }
 291
 292 bool wxScreenDC::StartDrawingOnTop( wxRectangle *rect )
 293 {
 294   int x = 0;
 295   int y = 0;
 296   int width = gdk_screen_width();
 297   int height = gdk_screen_height();
 298   if (rect)
 299   {
 300     x = rect->x;
 301     y = rect->y;
 302     width = rect->width;
 303     height = rect->height;
 304   }
 305
 306   sm_overlayWindowX = x;
 307   sm_overlayWindowY = y;
 308
 309   GdkWindowAttr attr;
 310   attr.x = x;
 311   attr.y = y;
 312   attr.width = width;
 313   attr.height = height;
 314   attr.override_redirect = TRUE;
 315   attr.wclass = GDK_INPUT_OUTPUT;
 316   attr.event_mask = 0;
 317   attr.window_type = GDK_WINDOW_TEMP;
 318
 319   // GTK cannot set transparent backgrounds. :-(
 320   sm_overlayWindow = gdk_window_transparent_new( NULL, &attr, GDK_WA_NOREDIR | GDK_WA_X | GDK_WA_Y );
 321
 322   if (sm_overlayWindow) gdk_window_show( sm_overlayWindow );
 323
 324   return (sm_overlayWindow);
 325 }
 326
 327 bool wxScreenDC::EndDrawingOnTop(void)
 328 {
 329   if (sm_overlayWindow) gdk_window_destroy( sm_overlayWindow );
 330
 331   sm_overlayWindow = NULL;
 332   sm_overlayWindowX = 0;
 333   sm_overlayWindowY = 0;
 334
 335   return TRUE;
 336 }
 337