gtkdocklet-win32.c

Linux下的多协议即时通讯程序源代码

/*
 * System tray icon (aka docklet) plugin for Winpidgin
 *
 * Copyright (C) 2002-3 Robert McQueen <[e-mail]>
 * Copyright (C) 2003 Herman Bloggs <[e-mail]>
 * Inspired by a similar plugin by:
 *  John (J5) Palmieri <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

#include <windows.h>
#include <gdk/gdkwin32.h>
#include <gdk/gdk.h>

#include "internal.h"
#include "gtkblist.h"
#include "debug.h"

#include "resource.h"
#include "MinimizeToTray.h"
#include "gtkwin32dep.h"
#include "gtkdocklet.h"
#include "pidginstock.h"

/*
 *  DEFINES, MACROS & DATA TYPES
 */
#define WM_TRAYMESSAGE WM_USER /* User defined WM Message */

/*
 *  LOCALS
 */
static HWND systray_hwnd = NULL;
/* additional two cached_icons entries for pending and connecting icons */
static HICON cached_icons[PURPLE_STATUS_NUM_PRIMITIVES + 2];
static GtkWidget *image = NULL;
static NOTIFYICONDATA _nicon_data;

static LRESULT CALLBACK systray_mainmsg_handler(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) {
	static UINT taskbarRestartMsg; /* static here means value is kept across multiple calls to this func */

	switch(msg) {
	case WM_CREATE:
		purple_debug_info("docklet", "WM_CREATE\n");
		taskbarRestartMsg = RegisterWindowMessage("TaskbarCreated");
		break;

	case WM_TIMER:
		purple_debug_info("docklet", "WM_TIMER\n");
		break;

	case WM_DESTROY:
		purple_debug_info("docklet", "WM_DESTROY\n");
		break;

	case WM_TRAYMESSAGE:
	{
		int type = 0;

		/* We'll use Double Click - Single click over on linux */
		if(lparam == WM_LBUTTONDBLCLK)
			type = 1;
		else if(lparam == WM_MBUTTONUP)
			type = 2;
		else if(lparam == WM_RBUTTONUP)
			type = 3;
		else
			break;

		pidgin_docklet_clicked(type);
		break;
	}
	default:
		if (msg == taskbarRestartMsg) {
			/* explorer crashed and left us hanging...
			   This will put the systray icon back in it's place, when it restarts */
			Shell_NotifyIcon(NIM_ADD, &_nicon_data);
		}
		break;
	}/* end switch */

	return DefWindowProc(hwnd, msg, wparam, lparam);
}

/* Create hidden window to process systray messages */
static HWND systray_create_hiddenwin() {
	WNDCLASSEX wcex;
	LPCTSTR wname;

	wname = TEXT("WinpidginSystrayWinCls");

	wcex.cbSize = sizeof(wcex);
	wcex.style		= 0;
	wcex.lpfnWndProc	= systray_mainmsg_handler;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= winpidgin_exe_hinstance();
	wcex.hIcon		= NULL;
	wcex.hCursor		= NULL,
	wcex.hbrBackground	= NULL;
	wcex.lpszMenuName	= NULL;
	wcex.lpszClassName	= wname;
	wcex.hIconSm		= NULL;

	RegisterClassEx(&wcex);

	/* Create the window */
	return (CreateWindow(wname, "", 0, 0, 0, 0, 0, GetDesktopWindow(), NULL, winpidgin_exe_hinstance(), 0));
}

static void systray_init_icon(HWND hWnd) {
	ZeroMemory(&_nicon_data, sizeof(_nicon_data));
	_nicon_data.cbSize = sizeof(NOTIFYICONDATA);
	_nicon_data.hWnd = hWnd;
	_nicon_data.uID = 0;
	_nicon_data.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
	_nicon_data.uCallbackMessage = WM_TRAYMESSAGE;
	_nicon_data.hIcon = NULL;
	lstrcpy(_nicon_data.szTip, PIDGIN_NAME);
	Shell_NotifyIcon(NIM_ADD, &_nicon_data);
	pidgin_docklet_embedded();
}

/* This is ganked from GTK+.
 * When we can use GTK+ 2.10 and the GtkStatusIcon stuff, this will no longer be necesary */
#define WIN32_GDI_FAILED(api) printf("GDI FAILED %s\n", api)

static gboolean
_gdk_win32_pixbuf_to_hicon_supports_alpha (void)
{
  static gboolean is_win_xp=FALSE, is_win_xp_checked=FALSE;

  if (!is_win_xp_checked)
    {
      is_win_xp_checked = TRUE;

      if (!G_WIN32_IS_NT_BASED ())
	is_win_xp = FALSE;
      else
	{
	  OSVERSIONINFO version;

	  memset (&version, 0, sizeof (version));
	  version.dwOSVersionInfoSize = sizeof (version);
	  is_win_xp = GetVersionEx (&version)
	    && version.dwPlatformId == VER_PLATFORM_WIN32_NT
	    && (version.dwMajorVersion > 5
		|| (version.dwMajorVersion == 5 && version.dwMinorVersion >= 1));
	}
    }
  return is_win_xp;
}

static HBITMAP
create_alpha_bitmap (gint     size,
		     guchar **outdata)
{
  BITMAPV5HEADER bi;
  HDC hdc;
  HBITMAP hBitmap;

  ZeroMemory (&bi, sizeof (BITMAPV5HEADER));
  bi.bV5Size = sizeof (BITMAPV5HEADER);
  bi.bV5Height = bi.bV5Width = size;
  bi.bV5Planes = 1;
  bi.bV5BitCount = 32;
  bi.bV5Compression = BI_BITFIELDS;
  /* The following mask specification specifies a supported 32 BPP
   * alpha format for Windows XP (BGRA format).
   */
  bi.bV5RedMask   = 0x00FF0000;
  bi.bV5GreenMask = 0x0000FF00;
  bi.bV5BlueMask  = 0x000000FF;
  bi.bV5AlphaMask = 0xFF000000;

  /* Create the DIB section with an alpha channel. */
  hdc = GetDC (NULL);
  if (!hdc)
    {
      WIN32_GDI_FAILED ("GetDC");
      return NULL;
    }
  hBitmap = CreateDIBSection (hdc, (BITMAPINFO *)&bi, DIB_RGB_COLORS,
			      (PVOID *) outdata, NULL, (DWORD)0);
  if (hBitmap == NULL)
    WIN32_GDI_FAILED ("CreateDIBSection");
  ReleaseDC (NULL, hdc);

  return hBitmap;
}

static HBITMAP
create_color_bitmap (gint     size,
		     guchar **outdata,
		     gint     bits)
{
  struct {
    BITMAPV4HEADER bmiHeader;
    RGBQUAD bmiColors[2];
  } bmi;
  HDC hdc;
  HBITMAP hBitmap;

  ZeroMemory (&bmi, sizeof (bmi));
  bmi.bmiHeader.bV4Size = sizeof (BITMAPV4HEADER);
  bmi.bmiHeader.bV4Height = bmi.bmiHeader.bV4Width = size;
  bmi.bmiHeader.bV4Planes = 1;
  bmi.bmiHeader.bV4BitCount = bits;
  bmi.bmiHeader.bV4V4Compression = BI_RGB;

  /* when bits is 1, these will be used.
   * bmiColors[0] already zeroed from ZeroMemory()
   */
  bmi.bmiColors[1].rgbBlue = 0xFF;
  bmi.bmiColors[1].rgbGreen = 0xFF;
  bmi.bmiColors[1].rgbRed = 0xFF;

  hdc = GetDC (NULL);
  if (!hdc)
    {
      WIN32_GDI_FAILED ("GetDC");
      return NULL;
    }
  hBitmap = CreateDIBSection (hdc, (BITMAPINFO *)&bmi, DIB_RGB_COLORS,
			      (PVOID *) outdata, NULL, (DWORD)0);
  if (hBitmap == NULL)
    WIN32_GDI_FAILED ("CreateDIBSection");
  ReleaseDC (NULL, hdc);

  return hBitmap;
}

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

  /* 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);

  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 + 4*(j+j_offset)*size + 4*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++)
	{
	  colorrow[4*i+0] = inrow[4*i+2];
	  colorrow[4*i+1] = inrow[4*i+1];
	  colorrow[4*i+2] = inrow[4*i+0];
	  colorrow[4*i+3] = inrow[4*i+3];
	  if (inrow[4*i+3] == 0)
	    maskbyte[0] |= mask_bit;	/* turn ON bit */
	  else
	    maskbyte[0] &= ~mask_bit;	/* turn OFF bit */
	  mask_bit >>= 1;
	  if (mask_bit == 0)
	    {
	      mask_bit = 0x80;
	      maskbyte++;
	    }
	}
    }