gtkdocklet-win32.c

Linux下的多协议即时通讯程序源代码

  *color = hColorBitmap;
  *mask = hMaskBitmap;

  return TRUE;
}

static gboolean
pixbuf_to_hbitmaps_normal (GdkPixbuf *pixbuf,
			   HBITMAP   *color,
			   HBITMAP   *mask)
{
  /* Based on code from
   * http://www.dotnet247.com/247reference/msgs/13/66301.aspx
   */
  HBITMAP hColorBitmap, hMaskBitmap;
  guchar *indata, *inrow;
  guchar *colordata, *colorrow, *maskdata, *maskbyte;
  gint width, height, size, i, i_offset, j, j_offset, rowstride, nc, bmstride;
  gboolean has_alpha;
  guint maskstride, mask_bit;

  width = gdk_pixbuf_get_width (pixbuf); /* width of icon */
  height = gdk_pixbuf_get_height (pixbuf); /* height of icon */

  /* The bitmaps are created square */
  size = MAX (width, height);

  hColorBitmap = create_color_bitmap (size, &colordata, 24);
  if (!hColorBitmap)
    return FALSE;
  hMaskBitmap = create_color_bitmap (size, &maskdata, 1);
  if (!hMaskBitmap)
    {
      DeleteObject (hColorBitmap);
      return FALSE;
    }

  /* rows are always aligned on 4-byte boundarys */
  bmstride = size * 3;
  if (bmstride % 4 != 0)
    bmstride += 4 - (bmstride % 4);

  /* MSDN says mask rows are aligned to "LONG" boundaries */
  maskstride = (((size + 31) & ~31) >> 3);

  indata = gdk_pixbuf_get_pixels (pixbuf);
  rowstride = gdk_pixbuf_get_rowstride (pixbuf);
  nc = gdk_pixbuf_get_n_channels (pixbuf);
  has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);

  if (width > height)
    {
      i_offset = 0;
      j_offset = (width - height) / 2;
    }
  else
    {
      i_offset = (height - width) / 2;
      j_offset = 0;
    }

  for (j = 0; j < height; j++)
    {
      colorrow = colordata + (j+j_offset)*bmstride + 3*i_offset;
      maskbyte = maskdata + (j+j_offset)*maskstride + i_offset/8;
      mask_bit = (0x80 >> (i_offset % 8));
      inrow = indata + (height-j-1)*rowstride;
      for (i = 0; i < width; i++)
	{
	  if (has_alpha && inrow[nc*i+3] < 128)
	    {
	      colorrow[3*i+0] = colorrow[3*i+1] = colorrow[3*i+2] = 0;
	      maskbyte[0] |= mask_bit;	/* turn ON bit */
	    }
	  else
	    {
	      colorrow[3*i+0] = inrow[nc*i+2];
	      colorrow[3*i+1] = inrow[nc*i+1];
	      colorrow[3*i+2] = inrow[nc*i+0];
	      maskbyte[0] &= ~mask_bit;	/* turn OFF bit */
	    }
	  mask_bit >>= 1;
	  if (mask_bit == 0)
	    {
	      mask_bit = 0x80;
	      maskbyte++;
	    }
	}
    }

  *color = hColorBitmap;
  *mask = hMaskBitmap;

  return TRUE;
}

static HICON
pixbuf_to_hicon (GdkPixbuf *pixbuf)
{
  gint x = 0, y = 0;
  gboolean is_icon = TRUE;
  ICONINFO ii;
  HICON icon;
  gboolean success;

  if (pixbuf == NULL)
    return NULL;

  if (_gdk_win32_pixbuf_to_hicon_supports_alpha() && gdk_pixbuf_get_has_alpha (pixbuf))
    success = pixbuf_to_hbitmaps_alpha_winxp (pixbuf, &ii.hbmColor, &ii.hbmMask);
  else
    success = pixbuf_to_hbitmaps_normal (pixbuf, &ii.hbmColor, &ii.hbmMask);

  if (!success)
    return NULL;

  ii.fIcon = is_icon;
  ii.xHotspot = x;
  ii.yHotspot = y;
  icon = CreateIconIndirect (&ii);
  DeleteObject (ii.hbmColor);
  DeleteObject (ii.hbmMask);
  return icon;
}

static HICON load_hicon_from_stock(const char *stock) {
	HICON hicon = NULL;
	GdkPixbuf *pixbuf = gtk_widget_render_icon(image, stock,
		gtk_icon_size_from_name(PIDGIN_ICON_SIZE_TANGO_EXTRA_SMALL), NULL);

	if (pixbuf) {
		hicon = pixbuf_to_hicon(pixbuf);
		g_object_unref(pixbuf);
	} else
		purple_debug_error("Unable to load pixbuf for %s.\n", stock);

	return hicon;
}


static void systray_change_icon(HICON hicon) {
	g_return_if_fail(hicon != NULL);

	_nicon_data.hIcon = hicon;
	Shell_NotifyIcon(NIM_MODIFY, &_nicon_data);
}

static void systray_remove_nid(void) {
	Shell_NotifyIcon(NIM_DELETE, &_nicon_data);
}

static void winpidgin_tray_update_icon(PurpleStatusPrimitive status,
		gboolean connecting, gboolean pending) {

	int icon_index;
	g_return_if_fail(image != NULL);

	if(connecting)
		icon_index = PURPLE_STATUS_NUM_PRIMITIVES;
	else if(pending)
		icon_index = PURPLE_STATUS_NUM_PRIMITIVES+1;
	else
		icon_index = status;

	g_return_if_fail(icon_index < (sizeof(cached_icons) / sizeof(HICON)));

	/* Look up and cache the HICON if we don't already have it */
	if (cached_icons[icon_index] == NULL) {
		const gchar *icon_name = NULL;
		switch (status) {
			case PURPLE_STATUS_OFFLINE:
				icon_name = PIDGIN_STOCK_TRAY_OFFLINE;
				break;
			case PURPLE_STATUS_AWAY:
				icon_name = PIDGIN_STOCK_TRAY_AWAY;
				break;
			case PURPLE_STATUS_UNAVAILABLE:
				icon_name = PIDGIN_STOCK_TRAY_BUSY;
				break;
			case PURPLE_STATUS_EXTENDED_AWAY:
				icon_name = PIDGIN_STOCK_TRAY_XA;
				break;
			case PURPLE_STATUS_INVISIBLE:
				icon_name = PIDGIN_STOCK_TRAY_INVISIBLE;
				break;
			default:
				icon_name = PIDGIN_STOCK_TRAY_AVAILABLE;
				break;
		}

		if (pending)
			icon_name = PIDGIN_STOCK_TRAY_PENDING;
		if (connecting)
			icon_name = PIDGIN_STOCK_TRAY_CONNECT;
	
		g_return_if_fail(icon_name != NULL);

		cached_icons[icon_index] = load_hicon_from_stock(icon_name);
	}

	systray_change_icon(cached_icons[icon_index]);
}

static void winpidgin_tray_blank_icon() {
	_nicon_data.hIcon = NULL;
	Shell_NotifyIcon(NIM_MODIFY, &_nicon_data);
}

static void winpidgin_tray_set_tooltip(gchar *tooltip) {
	if (tooltip) {
		char *locenc = NULL;
		locenc = g_locale_from_utf8(tooltip, -1, NULL, NULL, NULL);
		lstrcpyn(_nicon_data.szTip, locenc, sizeof(_nicon_data.szTip) / sizeof(TCHAR));
		g_free(locenc);
	} else {
		lstrcpy(_nicon_data.szTip, PIDGIN_NAME);
	}
	Shell_NotifyIcon(NIM_MODIFY, &_nicon_data);
}

static void winpidgin_tray_minimize(PidginBuddyList *gtkblist) {
	MinimizeWndToTray(GDK_WINDOW_HWND(gtkblist->window->window));
}

static void winpidgin_tray_maximize(PidginBuddyList *gtkblist) {
	RestoreWndFromTray(GDK_WINDOW_HWND(gtkblist->window->window));
}


static void winpidgin_tray_create() {
	OSVERSIONINFO osinfo;
	/* dummy window to process systray messages */
	systray_hwnd = systray_create_hiddenwin();

	image = gtk_image_new();
#if GLIB_CHECK_VERSION(2,10,0)
	g_object_ref_sink(image);
#else
	g_object_ref(image);
	gtk_object_sink(GTK_OBJECT(image));
#endif

	osinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
	GetVersionEx(&osinfo);

	/* Load icons, and init systray notify icon
	 * NOTE: Windows < XP only supports displaying 4-bit images in the Systray,
	 *  2K and ME will use the highest color depth that the desktop will support,
	 *  but will scale it back to 4-bits for display.
	 * That is why we use custom 4-bit icons for pre XP Windowses */
	if (osinfo.dwMajorVersion < 5 || (osinfo.dwMajorVersion == 5 && osinfo.dwMinorVersion == 0))
	{
		cached_icons[PURPLE_STATUS_OFFLINE] = (HICON) LoadImage(winpidgin_dll_hinstance(),
			MAKEINTRESOURCE(PIDGIN_TRAY_OFFLINE_4BIT), IMAGE_ICON, 16, 16, LR_CREATEDIBSECTION);
		cached_icons[PURPLE_STATUS_AVAILABLE] = (HICON) LoadImage(winpidgin_dll_hinstance(),
			MAKEINTRESOURCE(PIDGIN_TRAY_AVAILABLE_4BIT), IMAGE_ICON, 16, 16, LR_CREATEDIBSECTION);
		cached_icons[PURPLE_STATUS_AWAY] = (HICON) LoadImage(winpidgin_dll_hinstance(),
			MAKEINTRESOURCE(PIDGIN_TRAY_AWAY_4BIT), IMAGE_ICON, 16, 16, LR_CREATEDIBSECTION);
		cached_icons[PURPLE_STATUS_EXTENDED_AWAY] = (HICON) LoadImage(winpidgin_dll_hinstance(),
			MAKEINTRESOURCE(PIDGIN_TRAY_XA_4BIT), IMAGE_ICON, 16, 16, LR_CREATEDIBSECTION);
		cached_icons[PURPLE_STATUS_UNAVAILABLE] = (HICON) LoadImage(winpidgin_dll_hinstance(),
			MAKEINTRESOURCE(PIDGIN_TRAY_BUSY_4BIT), IMAGE_ICON, 16, 16, LR_CREATEDIBSECTION);
		cached_icons[PURPLE_STATUS_NUM_PRIMITIVES] = (HICON) LoadImage(winpidgin_dll_hinstance(),
			MAKEINTRESOURCE(PIDGIN_TRAY_CONNECTING_4BIT), IMAGE_ICON, 16, 16, LR_CREATEDIBSECTION);
		cached_icons[PURPLE_STATUS_NUM_PRIMITIVES+1] = (HICON) LoadImage(winpidgin_dll_hinstance(),
			MAKEINTRESOURCE(PIDGIN_TRAY_PENDING_4BIT), IMAGE_ICON, 16, 16, LR_CREATEDIBSECTION);
		cached_icons[PURPLE_STATUS_INVISIBLE] = (HICON) LoadImage(winpidgin_dll_hinstance(),
			MAKEINTRESOURCE(PIDGIN_TRAY_INVISIBLE_4BIT), IMAGE_ICON, 16, 16, LR_CREATEDIBSECTION);
	}

	/* Create icon in systray */
	systray_init_icon(systray_hwnd);

	purple_signal_connect(pidgin_blist_get_handle(), "gtkblist-hiding",
			pidgin_docklet_get_handle(), PURPLE_CALLBACK(winpidgin_tray_minimize), NULL);
	purple_signal_connect(pidgin_blist_get_handle(), "gtkblist-unhiding",
			pidgin_docklet_get_handle(), PURPLE_CALLBACK(winpidgin_tray_maximize), NULL);

	purple_debug_info("docklet", "created\n");
}

static void winpidgin_tray_destroy() {
	int cached_cnt = sizeof(cached_icons) / sizeof(HICON);
	systray_remove_nid();
	DestroyWindow(systray_hwnd);
	pidgin_docklet_remove();

	while (--cached_cnt >= 0) {
		if (cached_icons[cached_cnt] != NULL)
			DestroyIcon(cached_icons[cached_cnt]);
		cached_icons[cached_cnt] = NULL;
	}

	g_object_unref(image);
	image = NULL;
}

static struct docklet_ui_ops winpidgin_tray_ops =
{
	winpidgin_tray_create,
	winpidgin_tray_destroy,
	winpidgin_tray_update_icon,
	winpidgin_tray_blank_icon,
	winpidgin_tray_set_tooltip,
	NULL
};

/* Used by docklet's plugin load func */
void docklet_ui_init() {
	/* Initialize the cached icons to NULL */
	ZeroMemory(cached_icons, sizeof(cached_icons));

	pidgin_docklet_set_ui_ops(&winpidgin_tray_ops);
}