path: root/embed/mozilla/EphyUtils.cpp

/*
 *  Copyright (C) 2004 Marco Pesenti Gritti
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation; either version 2.1, 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 Lesser 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.
 *
 *  $Id$
 */

#include "mozilla-config.h"

#include "config.h"

#include "EphyUtils.h"
#include "ephy-embed-shell.h"
#include "ephy-embed-single.h"
#include "print-dialog.h"
#include "ephy-file-helpers.h"

#include <nsIIOService.h>
#include <nsIURI.h>
#include <nsIDOMWindow.h>
#include <nsIServiceManager.h>
#undef MOZILLA_INTERNAL_API
#include <nsEmbedString.h>
#define MOZILLA_INTERNAL_API 1
#include <nsIWindowWatcher.h>
#include <nsIEmbeddingSiteWindow.h>
#include <nsIWebBrowserChrome.h>
#include <gtkmozembed.h>
#include <nsIPrintSettings.h>

nsresult
EphyUtils::GetIOService (nsIIOService **ioService)
{
    nsresult rv;

    nsCOMPtr<nsIServiceManager> mgr; 
    NS_GetServiceManager (getter_AddRefs (mgr));
    if (!mgr) return NS_ERROR_FAILURE;

    rv = mgr->GetServiceByContractID ("@mozilla.org/network/io-service;1",
                      NS_GET_IID (nsIIOService),
                      (void **)ioService);
    return rv;
}

nsresult
EphyUtils::NewURI (nsIURI **result,
           const nsAString &spec,
           const char *charset,
           nsIURI *baseURI)
{
    nsEmbedCString cSpec;
    NS_UTF16ToCString (spec, NS_CSTRING_ENCODING_UTF8, cSpec);

    return NewURI (result, cSpec, charset, baseURI);
}

nsresult
EphyUtils::NewURI (nsIURI **result,
           const nsACString &spec,
           const char *charset,
           nsIURI *baseURI)
{
    nsresult rv;

    nsCOMPtr<nsIIOService> ioService;
    rv = EphyUtils::GetIOService (getter_AddRefs (ioService));
    NS_ENSURE_SUCCESS (rv, rv);

    rv = ioService->NewURI (spec, charset, baseURI, result);

    return rv;
}

GtkWidget *
EphyUtils::FindEmbed (nsIDOMWindow *aDOMWindow)
{
    if (!aDOMWindow) return nsnull;

    nsCOMPtr<nsIWindowWatcher> wwatch
        (do_GetService("@mozilla.org/embedcomp/window-watcher;1"));
    NS_ENSURE_TRUE (wwatch, nsnull);

    /* this DOM window may belong to some inner frame, we need
     * to get the topmost DOM window to get the embed
     */
    nsCOMPtr<nsIDOMWindow> topWindow;
    aDOMWindow->GetTop (getter_AddRefs (topWindow));
    if (!topWindow) return nsnull;
    
    nsCOMPtr<nsIWebBrowserChrome> windowChrome;
    wwatch->GetChromeForWindow (topWindow, getter_AddRefs(windowChrome));
    NS_ENSURE_TRUE (windowChrome, nsnull);

    nsCOMPtr<nsIEmbeddingSiteWindow> window (do_QueryInterface(windowChrome));
    NS_ENSURE_TRUE (window, nsnull);

    nsresult rv;
    GtkWidget *mozembed;
    rv = window->GetSiteWindow ((void **)&mozembed);
    NS_ENSURE_SUCCESS (rv, nsnull);

    return mozembed;
}

GtkWidget *
EphyUtils::FindGtkParent (nsIDOMWindow *aDOMWindow)
{
    GtkWidget *embed = FindEmbed (aDOMWindow);
    NS_ENSURE_TRUE (embed, nsnull);

    return gtk_widget_get_toplevel (GTK_WIDGET (embed));
}

nsresult
EphyUtils::CollatePrintSettings (EmbedPrintInfo *info,
                 nsIPrintSettings *options,
                 gboolean preview)
{
    const static int frame_types[] = {
        nsIPrintSettings::kFramesAsIs,
        nsIPrintSettings::kSelectedFrame,
        nsIPrintSettings::kEachFrameSep
    };

    switch (info->range)
    {
    case GNOME_PRINT_RANGE_CURRENT:
    case GNOME_PRINT_RANGE_SELECTION_UNSENSITIVE:
    case GNOME_PRINT_RANGE_ALL:
        options->SetPrintRange (nsIPrintSettings::kRangeAllPages);
        break;
    case GNOME_PRINT_RANGE_RANGE:
        options->SetPrintRange (nsIPrintSettings::kRangeSpecifiedPageRange);
        options->SetStartPageRange (info->from_page);
        options->SetEndPageRange (info->to_page);
        break;
    case GNOME_PRINT_RANGE_SELECTION:
        options->SetPrintRange (nsIPrintSettings::kRangeSelection);
        break;
    }
    
    const GnomePrintUnit *unit, *inch, *mm;
    double value;
    
    mm = gnome_print_unit_get_by_abbreviation ((const guchar *) "mm");
    inch = gnome_print_unit_get_by_abbreviation ((const guchar *) "in");
    g_assert (mm != NULL && inch != NULL);

    /* top margin */
    if (gnome_print_config_get_length (info->config,
                       (const guchar *) GNOME_PRINT_KEY_PAGE_MARGIN_TOP,
                       &value, &unit)
        && gnome_print_convert_distance (&value, unit, inch))
    {
        options->SetMarginTop (value);
    }

    /* bottom margin */
    if (gnome_print_config_get_length (info->config,
                       (const guchar *) GNOME_PRINT_KEY_PAGE_MARGIN_BOTTOM,
                       &value, &unit)
        && gnome_print_convert_distance (&value, unit, inch))
    {
        options->SetMarginBottom (value);
    }

    /* left margin */
    if (gnome_print_config_get_length (info->config,
                       (const guchar *) GNOME_PRINT_KEY_PAGE_MARGIN_LEFT,
                       &value, &unit)
        && gnome_print_convert_distance (&value, unit, inch))
    {
        options->SetMarginLeft (value);
    }

    /* right margin */
    if (gnome_print_config_get_length (info->config,
                       (const guchar *) GNOME_PRINT_KEY_PAGE_MARGIN_RIGHT,
                       &value, &unit)
        && gnome_print_convert_distance (&value, unit, inch))
    {
        options->SetMarginRight (value);
    }


    nsEmbedString tmp;

    NS_CStringToUTF16 (nsEmbedCString(info->header_left_string),
               NS_CSTRING_ENCODING_UTF8, tmp);
    options->SetHeaderStrLeft (tmp.get());

    NS_CStringToUTF16 (nsEmbedCString(info->header_center_string),
               NS_CSTRING_ENCODING_UTF8, tmp);
    options->SetHeaderStrCenter (tmp.get());

    NS_CStringToUTF16 (nsEmbedCString(info->header_right_string),
               NS_CSTRING_ENCODING_UTF8, tmp);
    options->SetHeaderStrRight (tmp.get());

    NS_CStringToUTF16 (nsEmbedCString(info->footer_left_string),
               NS_CSTRING_ENCODING_UTF8, tmp);
    options->SetFooterStrLeft (tmp.get());

    NS_CStringToUTF16 (nsEmbedCString(info->footer_center_string),
               NS_CSTRING_ENCODING_UTF8, tmp);
    options->SetFooterStrCenter(tmp.get());

    NS_CStringToUTF16 (nsEmbedCString(info->footer_right_string),
               NS_CSTRING_ENCODING_UTF8, tmp);
    options->SetFooterStrRight(tmp.get());

    options->SetPrintToFile (PR_FALSE);
    
    if (!preview)
    {
        char *cmd, *base;
        const char *temp_dir;
        
        temp_dir = ephy_file_tmp_dir ();
        base = g_build_filename (temp_dir, "printXXXXXX", NULL);
        info->tempfile = ephy_file_tmp_filename (base, "ps");
        g_free (base);
        
        /* use cat instead of print to file to avoid fflush to ensure
         * the file has been written completely and we don't need to
         * select a printer (i.e. should be printing backend independent)
         */
        
        cmd = g_strconcat ("cat > ", info->tempfile, NULL);
        NS_CStringToUTF16 (nsEmbedCString(cmd),
                   NS_CSTRING_ENCODING_UTF8, tmp);
        options->SetPrintCommand (tmp.get());
        g_free (cmd);
    }

    /* paper size */
    options->SetPaperSize (nsIPrintSettings::kPaperSizeDefined);
    options->SetPaperSizeUnit (nsIPrintSettings::kPaperSizeMillimeters);

    if (gnome_print_config_get_length (info->config,
                       (const guchar *) GNOME_PRINT_KEY_PAPER_WIDTH,
                       &value, &unit)
       && gnome_print_convert_distance (&value, unit, mm))
    {
        options->SetPaperWidth (value); 
    }

    if (gnome_print_config_get_length (info->config,
                       (const guchar *) GNOME_PRINT_KEY_PAPER_HEIGHT,
                       &value, &unit)
       && gnome_print_convert_distance (&value, unit, mm))
    {
        options->SetPaperHeight (value);    
    }
    
    char *string;

    /* paper name */
    string = (char *) gnome_print_config_get (info->config,
                          (const guchar *) GNOME_PRINT_KEY_PAPER_SIZE);
    NS_CStringToUTF16 (nsEmbedCString(string),
               NS_CSTRING_ENCODING_UTF8, tmp);
    options->SetPaperName (tmp.get());
    g_free (string);

    /* paper orientation */
    string = (char *) gnome_print_config_get (info->config,
                          (const guchar *) GNOME_PRINT_KEY_ORIENTATION);
    if (string == NULL) string = g_strdup ("R0");

    if (strncmp (string, "R90", 3) == 0 || strncmp (string, "R270", 4) == 0)
    {
        options->SetOrientation (nsIPrintSettings::kLandscapeOrientation);
    }
    else
    {
        options->SetOrientation (nsIPrintSettings::kPortraitOrientation);
    }
    g_free (string);

    options->SetPrintInColor (info->print_color);
    options->SetPrintFrameType (frame_types[info->frame_type]);

    return NS_OK;
}

PRBool
EphyUtils::StringEquals (nsAString &s1, nsAString &s2)
{
    if (s1.Length() != s2.Length())
    {
        return FALSE;
    }

    return (memcmp (s1.BeginReading(),
                s2.BeginReading(),
                s2.Length() * sizeof (PRUnichar)) == 0);
}