source/graphics/x11/window.cpp

   1 #include <vector>
   2 #include <X11/Xatom.h>
   3 #include <X11/Xutil.h>
   4 #ifdef WITH_XF86VIDMODE
   5 #include <X11/extensions/xf86vmode.h>
   6 #endif
   7 #include <msp/core/systemerror.h>
   8 #include "display_private.h"
   9 #include "window.h"
  10 #include "window_private.h"
  11
  12 using namespace std;
  13
  14 namespace {
  15
  16 Bool match_event_type(Display *, XEvent *event, XPointer arg)
  17 {
  18         return event->type==*reinterpret_cast<int *>(arg);
  19 }
  20
  21 }
  22
  23 namespace Msp {
  24 namespace Graphics {
  25
  26 void Window::platform_init()
  27 {
  28         DisplayHandle dpy = display.get_private().display;
  29
  30         priv->wm_delete_window = XInternAtom(dpy, "WM_DELETE_WINDOW", true);
  31         priv->invisible_cursor = 0;
  32
  33         XSetWindowAttributes attr;
  34         attr.override_redirect = options.fullscreen;
  35         attr.event_mask = ButtonPressMask|ButtonReleaseMask|PointerMotionMask|KeyPressMask|KeyReleaseMask|StructureNotifyMask|EnterWindowMask;
  36
  37         priv->window = XCreateWindow(dpy,
  38                 DefaultRootWindow(dpy),
  39                 0, 0,
  40                 options.width, options.height,
  41                 0,
  42                 CopyFromParent,
  43                 InputOutput,
  44                 CopyFromParent,
  45                 CWOverrideRedirect|CWEventMask, &attr);
  46
  47         XSetWMProtocols(dpy, priv->window, &priv->wm_delete_window, 1);
  48
  49         if(!options.resizable)
  50         {
  51                 XSizeHints hints;
  52                 hints.flags = PMinSize|PMaxSize;
  53                 hints.min_width=hints.max_width = options.width;
  54                 hints.min_height=hints.max_height = options.height;
  55                 XSetWMNormalHints(dpy, priv->window, &hints);
  56         }
  57 }
  58
  59 void Window::platform_cleanup()
  60 {
  61         if(priv->window)
  62                 XDestroyWindow(display.get_private().display, priv->window);
  63
  64         if(priv->invisible_cursor)
  65                 XFreeCursor(display.get_private().display, priv->invisible_cursor);
  66 }
  67
  68 void Window::set_title(const string &title)
  69 {
  70         vector<unsigned char> buf(title.begin(), title.end());
  71         XTextProperty prop;
  72         prop.value = &buf[0];
  73         prop.encoding = XA_STRING;
  74         prop.format = 8;
  75         prop.nitems = title.size();
  76         XSetWMName(display.get_private().display, priv->window, &prop);
  77         display.check_error();
  78 }
  79
  80 void Window::platform_reconfigure(bool fullscreen_changed)
  81 {
  82         DisplayHandle dpy = display.get_private().display;
  83
  84         bool was_visible = visible;
  85         if(fullscreen_changed)
  86         {
  87                 if(was_visible)
  88                 {
  89                         hide();
  90
  91                         // Wait for the window to be unmapped.  This makes window managers happy.
  92                         XEvent ev;
  93                         int ev_type = UnmapNotify;
  94                         XPeekIfEvent(dpy, &ev, match_event_type, reinterpret_cast<char *>(&ev_type));
  95                 }
  96
  97                 XSetWindowAttributes attr;
  98                 attr.override_redirect = options.fullscreen;
  99                 XChangeWindowAttributes(dpy, priv->window, CWOverrideRedirect, &attr);
 100         }
 101
 102         XSizeHints hints;
 103         if(options.resizable)
 104                 hints.flags = 0;
 105         else
 106         {
 107                 hints.flags = PMinSize|PMaxSize;
 108                 hints.min_width = hints.max_width = options.width;
 109                 hints.min_height = hints.max_height = options.height;
 110         }
 111         XSetWMNormalHints(dpy, priv->window, &hints);
 112
 113         if(options.fullscreen)
 114                 XMoveResizeWindow(dpy, priv->window, 0, 0, options.width, options.height);
 115         else
 116                 XResizeWindow(dpy, priv->window, options.width, options.height);
 117
 118         if(fullscreen_changed && was_visible)
 119                 show();
 120 }
 121
 122 void Window::show_cursor(bool s)
 123 {
 124         DisplayHandle dpy = display.get_private().display;
 125
 126         if(s)
 127                 XUndefineCursor(dpy, priv->window);
 128         else
 129         {
 130                 if(!priv->invisible_cursor)
 131                 {
 132                         int screen = DefaultScreen(dpy);
 133
 134                         Pixmap pm = XCreatePixmap(dpy, priv->window, 1, 1, 1);
 135                         GC gc = XCreateGC(dpy, pm, 0, 0);
 136                         XSetFunction(dpy, gc, GXclear);
 137                         XDrawPoint(dpy, pm, gc, 0, 0);
 138                         XFreeGC(dpy, gc);
 139
 140                         XColor black;
 141                         black.pixel = BlackPixel(dpy, screen);
 142                         XQueryColor(dpy, DefaultColormap(dpy, screen), &black);
 143
 144                         priv->invisible_cursor = XCreatePixmapCursor(dpy, pm, pm, &black, &black, 0, 0);
 145
 146                         XFreePixmap(dpy, pm);
 147                 }
 148                 XDefineCursor(dpy, priv->window, priv->invisible_cursor);
 149         }
 150 }
 151
 152 void Window::warp_pointer(int x, int y)
 153 {
 154         XWarpPointer(display.get_private().display, None, priv->window, 0, 0, 0, 0, x, y);
 155 }
 156
 157 void Window::platform_show()
 158 {
 159         XMapRaised(display.get_private().display, priv->window);
 160 }
 161
 162 void Window::platform_hide()
 163 {
 164         XUnmapWindow(display.get_private().display, priv->window);
 165 }
 166
 167 bool Window::event(const Event &evnt)
 168 {
 169         const XEvent &ev = evnt.xevent;
 170         switch(ev.type)
 171         {
 172         case ButtonPress:
 173         case ButtonRelease:
 174         case MotionNotify:
 175         case KeyPress:
 176         case KeyRelease:
 177                 signal_input_event.emit(evnt);
 178                 break;
 179         case ConfigureNotify:
 180                 if((ev.xconfigure.width==static_cast<int>(options.width) && ev.xconfigure.height==static_cast<int>(options.height)) == resizing)
 181                 {
 182                         options.width = ev.xconfigure.width;
 183                         options.height = ev.xconfigure.height;
 184                         resizing = false;
 185                         signal_resize.emit(options.width, options.height);
 186                 }
 187 #ifdef WITH_XF86VIDMODE
 188                 if(options.fullscreen)
 189                 {
 190                         DisplayHandle dpy = display.get_private().display;
 191                         int screen = DefaultScreen(dpy);
 192                         XF86VidModeSetViewPort(dpy, screen, ev.xconfigure.x, ev.xconfigure.y);
 193                 }
 194 #endif
 195                 break;
 196         case ClientMessage:
 197                 if(ev.xclient.data.l[0]==static_cast<long>(priv->wm_delete_window))
 198                         signal_close.emit();
 199                 break;
 200         case EnterNotify:
 201                 if(options.fullscreen)
 202                         XSetInputFocus(display.get_private().display, priv->window, RevertToParent, CurrentTime);
 203                 break;
 204         case MapNotify:
 205                 if(options.fullscreen)
 206                         XGrabPointer(display.get_private().display, priv->window, true, None, GrabModeAsync, GrabModeAsync, priv->window, None, CurrentTime);
 207                 break;
 208         default:
 209                 return false;
 210         }
 211
 212         return true;
 213 }
 214
 215 } // namespace Graphics
 216 } // namespace Msp