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gecko-dev
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gecko-dev/widget/gtk/nsPrintDialogGTK.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <gtk/gtk.h>
#include <gtk/gtkunixprint.h>
#include <stdlib.h>
#include "mozilla/ArrayUtils.h"
#include "mozilla/Services.h"
#include "MozContainer.h"
#include "nsIPrintSettings.h"
#include "nsIWidget.h"
#include "nsPrintDialogGTK.h"
#include "nsPrintSettingsGTK.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "nsIStringBundle.h"
#include "nsIPrintSettingsService.h"
#include "nsPIDOMWindow.h"
#include "nsPrintfCString.h"
#include "nsIGIOService.h"
#include "nsServiceManagerUtils.h"
#include "WidgetUtils.h"
#include "WidgetUtilsGtk.h"
#include "nsIObserverService.h"
// for gdk_x11_window_get_xid
#include <gdk/gdkx.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <gio/gunixfdlist.h>
// for dlsym
#include <dlfcn.h>
#include "MainThreadUtils.h"
using namespace mozilla;
using namespace mozilla::widget;
static const char header_footer_tags[][4] = {"", "&T", "&U", "&D", "&P", "&PT"};
#define CUSTOM_VALUE_INDEX gint(ArrayLength(header_footer_tags))
static GtkWindow* get_gtk_window_for_nsiwidget(nsIWidget* widget) {
return GTK_WINDOW(widget->GetNativeData(NS_NATIVE_SHELLWIDGET));
}
static void ShowCustomDialog(GtkComboBox* changed_box, gpointer user_data) {
if (gtk_combo_box_get_active(changed_box) != CUSTOM_VALUE_INDEX) {
g_object_set_data(G_OBJECT(changed_box), "previous-active",
GINT_TO_POINTER(gtk_combo_box_get_active(changed_box)));
return;
}
GtkWindow* printDialog = GTK_WINDOW(user_data);
nsCOMPtr<nsIStringBundleService> bundleSvc =
do_GetService(NS_STRINGBUNDLE_CONTRACTID);
nsCOMPtr<nsIStringBundle> printBundle;
bundleSvc->CreateBundle("chrome://global/locale/printdialog.properties",
getter_AddRefs(printBundle));
nsAutoString intlString;
printBundle->GetStringFromName("headerFooterCustom", intlString);
GtkWidget* prompt_dialog = gtk_dialog_new_with_buttons(
NS_ConvertUTF16toUTF8(intlString).get(), printDialog,
(GtkDialogFlags)(GTK_DIALOG_MODAL), GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, nullptr);
gtk_dialog_set_default_response(GTK_DIALOG(prompt_dialog),
GTK_RESPONSE_ACCEPT);
gtk_dialog_set_alternative_button_order(
GTK_DIALOG(prompt_dialog), GTK_RESPONSE_ACCEPT, GTK_RESPONSE_REJECT, -1);
printBundle->GetStringFromName("customHeaderFooterPrompt", intlString);
GtkWidget* custom_label =
gtk_label_new(NS_ConvertUTF16toUTF8(intlString).get());
GtkWidget* custom_entry = gtk_entry_new();
GtkWidget* question_icon =
gtk_image_new_from_stock(GTK_STOCK_DIALOG_QUESTION, GTK_ICON_SIZE_DIALOG);
// To be convenient, prefill the textbox with the existing value, if any, and
// select it all so they can easily both edit it and type in a new one.
const char* current_text =
(const char*)g_object_get_data(G_OBJECT(changed_box), "custom-text");
if (current_text) {
gtk_entry_set_text(GTK_ENTRY(custom_entry), current_text);
gtk_editable_select_region(GTK_EDITABLE(custom_entry), 0, -1);
}
gtk_entry_set_activates_default(GTK_ENTRY(custom_entry), TRUE);
GtkWidget* custom_vbox = gtk_vbox_new(TRUE, 2);
gtk_box_pack_start(GTK_BOX(custom_vbox), custom_label, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(custom_vbox), custom_entry, FALSE, FALSE,
5); // Make entry 5px underneath label
GtkWidget* custom_hbox = gtk_hbox_new(FALSE, 2);
gtk_box_pack_start(GTK_BOX(custom_hbox), question_icon, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(custom_hbox), custom_vbox, FALSE, FALSE,
10); // Make question icon 10px away from content
gtk_container_set_border_width(GTK_CONTAINER(custom_hbox), 2);
gtk_widget_show_all(custom_hbox);
gtk_box_pack_start(
GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(prompt_dialog))),
custom_hbox, FALSE, FALSE, 0);
gint diag_response = gtk_dialog_run(GTK_DIALOG(prompt_dialog));
if (diag_response == GTK_RESPONSE_ACCEPT) {
const gchar* response_text = gtk_entry_get_text(GTK_ENTRY(custom_entry));
g_object_set_data_full(G_OBJECT(changed_box), "custom-text",
strdup(response_text), (GDestroyNotify)free);
g_object_set_data(G_OBJECT(changed_box), "previous-active",
GINT_TO_POINTER(CUSTOM_VALUE_INDEX));
} else {
// Go back to the previous index
gint previous_active = GPOINTER_TO_INT(
g_object_get_data(G_OBJECT(changed_box), "previous-active"));
gtk_combo_box_set_active(changed_box, previous_active);
}
gtk_widget_destroy(prompt_dialog);
}
class nsPrintDialogWidgetGTK {
public:
nsPrintDialogWidgetGTK(nsPIDOMWindowOuter* aParent,
nsIPrintSettings* aPrintSettings);
~nsPrintDialogWidgetGTK() { gtk_widget_destroy(dialog); }
NS_ConvertUTF16toUTF8 GetUTF8FromBundle(const char* aKey);
gint Run();
nsresult ImportSettings(nsIPrintSettings* aNSSettings);
nsresult ExportSettings(nsIPrintSettings* aNSSettings);
private:
GtkWidget* dialog;
GtkWidget* shrink_to_fit_toggle;
GtkWidget* print_bg_colors_toggle;
GtkWidget* print_bg_images_toggle;
GtkWidget* selection_only_toggle;
GtkWidget* header_dropdown[3]; // {left, center, right}
GtkWidget* footer_dropdown[3];
nsCOMPtr<nsIStringBundle> printBundle;
bool useNativeSelection;
GtkWidget* ConstructHeaderFooterDropdown(const char16_t* currentString);
const char* OptionWidgetToString(GtkWidget* dropdown);
/* Code to copy between GTK and NS print settings structures.
* In the following,
* "Import" means to copy from NS to GTK
* "Export" means to copy from GTK to NS
*/
void ExportHeaderFooter(nsIPrintSettings* aNS);
};
nsPrintDialogWidgetGTK::nsPrintDialogWidgetGTK(nsPIDOMWindowOuter* aParent,
nsIPrintSettings* aSettings) {
nsCOMPtr<nsIWidget> widget = WidgetUtils::DOMWindowToWidget(aParent);
NS_ASSERTION(widget, "Need a widget for dialog to be modal.");
GtkWindow* gtkParent = get_gtk_window_for_nsiwidget(widget);
NS_ASSERTION(gtkParent, "Need a GTK window for dialog to be modal.");
nsCOMPtr<nsIStringBundleService> bundleSvc =
do_GetService(NS_STRINGBUNDLE_CONTRACTID);
bundleSvc->CreateBundle("chrome://global/locale/printdialog.properties",
getter_AddRefs(printBundle));
dialog = gtk_print_unix_dialog_new(GetUTF8FromBundle("printTitleGTK").get(),
gtkParent);
gtk_print_unix_dialog_set_manual_capabilities(
GTK_PRINT_UNIX_DIALOG(dialog),
GtkPrintCapabilities(
GTK_PRINT_CAPABILITY_COPIES | GTK_PRINT_CAPABILITY_COLLATE |
GTK_PRINT_CAPABILITY_REVERSE | GTK_PRINT_CAPABILITY_SCALE |
GTK_PRINT_CAPABILITY_GENERATE_PDF));
// The vast majority of magic numbers in this widget construction are padding.
// e.g. for the set_border_width below, 12px matches that of just about every
// other window.
GtkWidget* custom_options_tab = gtk_vbox_new(FALSE, 0);
gtk_container_set_border_width(GTK_CONTAINER(custom_options_tab), 12);
GtkWidget* tab_label =
gtk_label_new(GetUTF8FromBundle("optionsTabLabelGTK").get());
// Check buttons for shrink-to-fit and print selection
GtkWidget* check_buttons_container = gtk_vbox_new(TRUE, 2);
shrink_to_fit_toggle = gtk_check_button_new_with_mnemonic(
GetUTF8FromBundle("shrinkToFit").get());
gtk_box_pack_start(GTK_BOX(check_buttons_container), shrink_to_fit_toggle,
FALSE, FALSE, 0);
// GTK+2.18 and above allow us to add a "Selection" option to the main
// settings screen, rather than adding an option on a custom tab like we must
// do on older versions.
bool canSelectText = aSettings->GetIsPrintSelectionRBEnabled();
if (gtk_major_version > 2 ||
(gtk_major_version == 2 && gtk_minor_version >= 18)) {
useNativeSelection = true;
g_object_set(dialog, "support-selection", TRUE, "has-selection",
canSelectText, "embed-page-setup", TRUE, nullptr);
} else {
useNativeSelection = false;
selection_only_toggle = gtk_check_button_new_with_mnemonic(
GetUTF8FromBundle("selectionOnly").get());
gtk_widget_set_sensitive(selection_only_toggle, canSelectText);
gtk_box_pack_start(GTK_BOX(check_buttons_container), selection_only_toggle,
FALSE, FALSE, 0);
}
// Check buttons for printing background
GtkWidget* appearance_buttons_container = gtk_vbox_new(TRUE, 2);
print_bg_colors_toggle = gtk_check_button_new_with_mnemonic(
GetUTF8FromBundle("printBGColors").get());
print_bg_images_toggle = gtk_check_button_new_with_mnemonic(
GetUTF8FromBundle("printBGImages").get());
gtk_box_pack_start(GTK_BOX(appearance_buttons_container),
print_bg_colors_toggle, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(appearance_buttons_container),
print_bg_images_toggle, FALSE, FALSE, 0);
// "Appearance" options label, bold and center-aligned
GtkWidget* appearance_label = gtk_label_new(nullptr);
char* pangoMarkup = g_markup_printf_escaped(
"<b>%s</b>", GetUTF8FromBundle("printBGOptions").get());
gtk_label_set_markup(GTK_LABEL(appearance_label), pangoMarkup);
g_free(pangoMarkup);
gtk_misc_set_alignment(GTK_MISC(appearance_label), 0, 0);
GtkWidget* appearance_container = gtk_alignment_new(0, 0, 0, 0);
gtk_alignment_set_padding(GTK_ALIGNMENT(appearance_container), 8, 0, 12, 0);
gtk_container_add(GTK_CONTAINER(appearance_container),
appearance_buttons_container);
GtkWidget* appearance_vertical_squasher = gtk_vbox_new(FALSE, 0);
gtk_box_pack_start(GTK_BOX(appearance_vertical_squasher), appearance_label,
FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(appearance_vertical_squasher),
appearance_container, FALSE, FALSE, 0);
// "Header & Footer" options label, bold and center-aligned
GtkWidget* header_footer_label = gtk_label_new(nullptr);
pangoMarkup = g_markup_printf_escaped(
"<b>%s</b>", GetUTF8FromBundle("headerFooter").get());
gtk_label_set_markup(GTK_LABEL(header_footer_label), pangoMarkup);
g_free(pangoMarkup);
gtk_misc_set_alignment(GTK_MISC(header_footer_label), 0, 0);
GtkWidget* header_footer_container = gtk_alignment_new(0, 0, 0, 0);
gtk_alignment_set_padding(GTK_ALIGNMENT(header_footer_container), 8, 0, 12,
0);
// --- Table for making the header and footer options ---
GtkWidget* header_footer_table = gtk_table_new(3, 3, FALSE); // 3x3 table
nsString header_footer_str[3];
aSettings->GetHeaderStrLeft(header_footer_str[0]);
aSettings->GetHeaderStrCenter(header_footer_str[1]);
aSettings->GetHeaderStrRight(header_footer_str[2]);
for (unsigned int i = 0; i < ArrayLength(header_dropdown); i++) {
header_dropdown[i] =
ConstructHeaderFooterDropdown(header_footer_str[i].get());
// Those 4 magic numbers in the middle provide the position in the table.
// The last two numbers mean 2 px padding on every side.
gtk_table_attach(GTK_TABLE(header_footer_table), header_dropdown[i], i,
(i + 1), 0, 1, (GtkAttachOptions)0, (GtkAttachOptions)0, 2,
2);
}
const char labelKeys[][7] = {"left", "center", "right"};
for (unsigned int i = 0; i < ArrayLength(labelKeys); i++) {
gtk_table_attach(GTK_TABLE(header_footer_table),
gtk_label_new(GetUTF8FromBundle(labelKeys[i]).get()), i,
(i + 1), 1, 2, (GtkAttachOptions)0, (GtkAttachOptions)0, 2,
2);
}
aSettings->GetFooterStrLeft(header_footer_str[0]);
aSettings->GetFooterStrCenter(header_footer_str[1]);
aSettings->GetFooterStrRight(header_footer_str[2]);
for (unsigned int i = 0; i < ArrayLength(footer_dropdown); i++) {
footer_dropdown[i] =
ConstructHeaderFooterDropdown(header_footer_str[i].get());
gtk_table_attach(GTK_TABLE(header_footer_table), footer_dropdown[i], i,
(i + 1), 2, 3, (GtkAttachOptions)0, (GtkAttachOptions)0, 2,
2);
}
// ---
gtk_container_add(GTK_CONTAINER(header_footer_container),
header_footer_table);
GtkWidget* header_footer_vertical_squasher = gtk_vbox_new(FALSE, 0);
gtk_box_pack_start(GTK_BOX(header_footer_vertical_squasher),
header_footer_label, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(header_footer_vertical_squasher),
header_footer_container, FALSE, FALSE, 0);
// Construction of everything
gtk_box_pack_start(GTK_BOX(custom_options_tab), check_buttons_container,
FALSE, FALSE, 10); // 10px padding
gtk_box_pack_start(GTK_BOX(custom_options_tab), appearance_vertical_squasher,
FALSE, FALSE, 10);
gtk_box_pack_start(GTK_BOX(custom_options_tab),
header_footer_vertical_squasher, FALSE, FALSE, 0);
gtk_print_unix_dialog_add_custom_tab(GTK_PRINT_UNIX_DIALOG(dialog),
custom_options_tab, tab_label);
gtk_widget_show_all(custom_options_tab);
}
NS_ConvertUTF16toUTF8 nsPrintDialogWidgetGTK::GetUTF8FromBundle(
const char* aKey) {
nsAutoString intlString;
printBundle->GetStringFromName(aKey, intlString);
return NS_ConvertUTF16toUTF8(
intlString); // Return the actual object so we don't lose reference
}
const char* nsPrintDialogWidgetGTK::OptionWidgetToString(GtkWidget* dropdown) {
gint index = gtk_combo_box_get_active(GTK_COMBO_BOX(dropdown));
NS_ASSERTION(index <= CUSTOM_VALUE_INDEX,
"Index of dropdown is higher than expected!");
if (index == CUSTOM_VALUE_INDEX)
return (const char*)g_object_get_data(G_OBJECT(dropdown), "custom-text");
return header_footer_tags[index];
}
gint nsPrintDialogWidgetGTK::Run() {
const gint response = gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_hide(dialog);
return response;
}
void nsPrintDialogWidgetGTK::ExportHeaderFooter(nsIPrintSettings* aNS) {
const char* header_footer_str;
header_footer_str = OptionWidgetToString(header_dropdown[0]);
aNS->SetHeaderStrLeft(NS_ConvertUTF8toUTF16(header_footer_str));
header_footer_str = OptionWidgetToString(header_dropdown[1]);
aNS->SetHeaderStrCenter(NS_ConvertUTF8toUTF16(header_footer_str));
header_footer_str = OptionWidgetToString(header_dropdown[2]);
aNS->SetHeaderStrRight(NS_ConvertUTF8toUTF16(header_footer_str));
header_footer_str = OptionWidgetToString(footer_dropdown[0]);
aNS->SetFooterStrLeft(NS_ConvertUTF8toUTF16(header_footer_str));
header_footer_str = OptionWidgetToString(footer_dropdown[1]);
aNS->SetFooterStrCenter(NS_ConvertUTF8toUTF16(header_footer_str));
header_footer_str = OptionWidgetToString(footer_dropdown[2]);
aNS->SetFooterStrRight(NS_ConvertUTF8toUTF16(header_footer_str));
}
nsresult nsPrintDialogWidgetGTK::ImportSettings(nsIPrintSettings* aNSSettings) {
MOZ_ASSERT(aNSSettings, "aSettings must not be null");
NS_ENSURE_TRUE(aNSSettings, NS_ERROR_FAILURE);
nsCOMPtr<nsPrintSettingsGTK> aNSSettingsGTK(do_QueryInterface(aNSSettings));
if (!aNSSettingsGTK) return NS_ERROR_FAILURE;
GtkPrintSettings* settings = aNSSettingsGTK->GetGtkPrintSettings();
GtkPageSetup* setup = aNSSettingsGTK->GetGtkPageSetup();
bool geckoBool;
aNSSettings->GetShrinkToFit(&geckoBool);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(shrink_to_fit_toggle),
geckoBool);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(print_bg_colors_toggle),
aNSSettings->GetPrintBGColors());
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(print_bg_images_toggle),
aNSSettings->GetPrintBGImages());
gtk_print_unix_dialog_set_settings(GTK_PRINT_UNIX_DIALOG(dialog), settings);
gtk_print_unix_dialog_set_page_setup(GTK_PRINT_UNIX_DIALOG(dialog), setup);
return NS_OK;
}
nsresult nsPrintDialogWidgetGTK::ExportSettings(nsIPrintSettings* aNSSettings) {
MOZ_ASSERT(aNSSettings, "aSettings must not be null");
NS_ENSURE_TRUE(aNSSettings, NS_ERROR_FAILURE);
GtkPrintSettings* settings =
gtk_print_unix_dialog_get_settings(GTK_PRINT_UNIX_DIALOG(dialog));
GtkPageSetup* setup =
gtk_print_unix_dialog_get_page_setup(GTK_PRINT_UNIX_DIALOG(dialog));
GtkPrinter* printer =
gtk_print_unix_dialog_get_selected_printer(GTK_PRINT_UNIX_DIALOG(dialog));
if (settings && setup && printer) {
ExportHeaderFooter(aNSSettings);
aNSSettings->SetOutputFormat(nsIPrintSettings::kOutputFormatNative);
// Print-to-file is true by default. This must be turned off or else
// printing won't occur! (We manually copy the spool file when this flag is
// set, because we love our embedders) Even if it is print-to-file in GTK's
// case, GTK does The Right Thing when we send the job.
aNSSettings->SetPrintToFile(false);
aNSSettings->SetShrinkToFit(
gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(shrink_to_fit_toggle)));
aNSSettings->SetPrintBGColors(gtk_toggle_button_get_active(
GTK_TOGGLE_BUTTON(print_bg_colors_toggle)));
aNSSettings->SetPrintBGImages(gtk_toggle_button_get_active(
GTK_TOGGLE_BUTTON(print_bg_images_toggle)));
// Try to save native settings in the session object
nsCOMPtr<nsPrintSettingsGTK> aNSSettingsGTK(do_QueryInterface(aNSSettings));
if (aNSSettingsGTK) {
aNSSettingsGTK->SetGtkPrintSettings(settings);
aNSSettingsGTK->SetGtkPageSetup(setup);
aNSSettingsGTK->SetGtkPrinter(printer);
bool printSelectionOnly;
if (useNativeSelection) {
_GtkPrintPages pageSetting =
(_GtkPrintPages)gtk_print_settings_get_print_pages(settings);
printSelectionOnly = (pageSetting == _GTK_PRINT_PAGES_SELECTION);
} else {
printSelectionOnly = gtk_toggle_button_get_active(
GTK_TOGGLE_BUTTON(selection_only_toggle));
}
aNSSettingsGTK->SetPrintSelectionOnly(printSelectionOnly);
}
}
if (settings) g_object_unref(settings);
return NS_OK;
}
GtkWidget* nsPrintDialogWidgetGTK::ConstructHeaderFooterDropdown(
const char16_t* currentString) {
GtkWidget* dropdown = gtk_combo_box_text_new();
const char hf_options[][22] = {"headerFooterBlank", "headerFooterTitle",
"headerFooterURL", "headerFooterDate",
"headerFooterPage", "headerFooterPageTotal",
"headerFooterCustom"};
for (unsigned int i = 0; i < ArrayLength(hf_options); i++) {
gtk_combo_box_text_append(GTK_COMBO_BOX_TEXT(dropdown), nullptr,
GetUTF8FromBundle(hf_options[i]).get());
}
bool shouldBeCustom = true;
NS_ConvertUTF16toUTF8 currentStringUTF8(currentString);
for (unsigned int i = 0; i < ArrayLength(header_footer_tags); i++) {
if (!strcmp(currentStringUTF8.get(), header_footer_tags[i])) {
gtk_combo_box_set_active(GTK_COMBO_BOX(dropdown), i);
g_object_set_data(G_OBJECT(dropdown), "previous-active",
GINT_TO_POINTER(i));
shouldBeCustom = false;
break;
}
}
if (shouldBeCustom) {
gtk_combo_box_set_active(GTK_COMBO_BOX(dropdown), CUSTOM_VALUE_INDEX);
g_object_set_data(G_OBJECT(dropdown), "previous-active",
GINT_TO_POINTER(CUSTOM_VALUE_INDEX));
char* custom_string = strdup(currentStringUTF8.get());
g_object_set_data_full(G_OBJECT(dropdown), "custom-text", custom_string,
(GDestroyNotify)free);
}
g_signal_connect(dropdown, "changed", (GCallback)ShowCustomDialog, dialog);
return dropdown;
}
NS_IMPL_ISUPPORTS(nsPrintDialogServiceGTK, nsIPrintDialogService)
nsPrintDialogServiceGTK::nsPrintDialogServiceGTK() = default;
nsPrintDialogServiceGTK::~nsPrintDialogServiceGTK() = default;
NS_IMETHODIMP
nsPrintDialogServiceGTK::Init() { return NS_OK; }
// Used to obtain window handle. The portal use this handle
// to ensure that print dialog is modal.
typedef void (*WindowHandleExported)(GtkWindow* window, const char* handle,
gpointer user_data);
typedef void (*GtkWindowHandleExported)(GtkWindow* window, const char* handle,
gpointer user_data);
#ifdef MOZ_WAYLAND
# if !GTK_CHECK_VERSION(3, 22, 0)
typedef void (*GdkWaylandWindowExported)(GdkWindow* window, const char* handle,
gpointer user_data);
# endif
typedef struct {
GtkWindow* window;
WindowHandleExported callback;
gpointer user_data;
} WaylandWindowHandleExportedData;
static void wayland_window_handle_exported(GdkWindow* window,
const char* wayland_handle_str,
gpointer user_data) {
WaylandWindowHandleExportedData* data =
static_cast<WaylandWindowHandleExportedData*>(user_data);
char* handle_str;
handle_str = g_strdup_printf("wayland:%s", wayland_handle_str);
data->callback(data->window, handle_str, data->user_data);
g_free(handle_str);
}
#endif
// Get window handle for the portal, taken from gtk/gtkwindow.c
// (currently not exported)
static gboolean window_export_handle(GtkWindow* window,
GtkWindowHandleExported callback,
gpointer user_data) {
if (GdkIsX11Display()) {
GdkWindow* gdk_window = gtk_widget_get_window(GTK_WIDGET(window));
char* handle_str;
guint32 xid = (guint32)gdk_x11_window_get_xid(gdk_window);
handle_str = g_strdup_printf("x11:%x", xid);
callback(window, handle_str, user_data);
g_free(handle_str);
return true;
}
#ifdef MOZ_WAYLAND
else if (GdkIsWaylandDisplay()) {
GdkWindow* gdk_window = gtk_widget_get_window(GTK_WIDGET(window));
WaylandWindowHandleExportedData* data;
data = g_new0(WaylandWindowHandleExportedData, 1);
data->window = window;
data->callback = callback;
data->user_data = user_data;
static auto s_gdk_wayland_window_export_handle =
reinterpret_cast<gboolean (*)(GdkWindow*, GdkWaylandWindowExported,
gpointer, GDestroyNotify)>(
dlsym(RTLD_DEFAULT, "gdk_wayland_window_export_handle"));
if (!s_gdk_wayland_window_export_handle ||
!s_gdk_wayland_window_export_handle(
gdk_window, wayland_window_handle_exported, data, g_free)) {
g_free(data);
return false;
}
return true;
}
#endif
g_warning("Couldn't export handle, unsupported windowing system");
return false;
}
/**
* Communication class with the GTK print portal handler
*
* To print document from flatpak we need to use print portal because
* printers are not directly accessible in the sandboxed environment.
*
* At first we request portal to show the print dialog to let user choose
* printer settings. We use DBUS interface for that (PreparePrint method).
*
* Next we force application to print to temporary file and after the writing
* to the file is finished we pass its file descriptor to the portal.
* Portal will pass duplicate of the file descriptor to the printer which
* user selected before (by DBUS Print method).
*
* Since DBUS communication is done async while nsPrintDialogServiceGTK::Show
* is expecting sync execution, we need to create a new GMainLoop during the
* print portal dialog is running. The loop is stopped after the dialog
* is closed.
*/
class nsFlatpakPrintPortal : public nsIObserver {
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
public:
explicit nsFlatpakPrintPortal(nsPrintSettingsGTK* aPrintSettings);
nsresult PreparePrintRequest(GtkWindow* aWindow);
static void OnWindowExportHandleDone(GtkWindow* aWindow,
const char* aWindowHandleStr,
gpointer aUserData);
void PreparePrint(GtkWindow* aWindow, const char* aWindowHandleStr);
static void OnPreparePrintResponse(GDBusConnection* connection,
const char* sender_name,
const char* object_path,
const char* interface_name,
const char* signal_name,
GVariant* parameters, gpointer data);
GtkPrintOperationResult GetResult();
private:
virtual ~nsFlatpakPrintPortal();
void FinishPrintDialog(GVariant* parameters);
nsCOMPtr<nsPrintSettingsGTK> mPrintAndPageSettings;
GDBusProxy* mProxy;
guint32 mToken;
GMainLoop* mLoop;
GtkPrintOperationResult mResult;
guint mResponseSignalId;
GtkWindow* mParentWindow;
};
NS_IMPL_ISUPPORTS(nsFlatpakPrintPortal, nsIObserver)
nsFlatpakPrintPortal::nsFlatpakPrintPortal(nsPrintSettingsGTK* aPrintSettings)
: mPrintAndPageSettings(aPrintSettings),
mProxy(nullptr),
mLoop(nullptr),
mResponseSignalId(0),
mParentWindow(nullptr) {}
/**
* Creates GDBusProxy, query for window handle and create a new GMainLoop.
*
* The GMainLoop is to be run from GetResult() and be quitted during
* FinishPrintDialog.
*
* @param aWindow toplevel application window which is used as parent of print
* dialog
*/
nsresult nsFlatpakPrintPortal::PreparePrintRequest(GtkWindow* aWindow) {
MOZ_ASSERT(aWindow, "aWindow must not be null");
MOZ_ASSERT(mPrintAndPageSettings, "mPrintAndPageSettings must not be null");
GError* error = nullptr;
mProxy = g_dbus_proxy_new_for_bus_sync(
G_BUS_TYPE_SESSION, G_DBUS_PROXY_FLAGS_NONE, nullptr,
"org.freedesktop.portal.Desktop", "/org/freedesktop/portal/desktop",
"org.freedesktop.portal.Print", nullptr, &error);
if (mProxy == nullptr) {
NS_WARNING(
nsPrintfCString("Unable to create dbus proxy: %s", error->message)
.get());
g_error_free(error);
return NS_ERROR_FAILURE;
}
// The window handler is returned async, we will continue by PreparePrint
// method when it is returned.
if (!window_export_handle(
aWindow, &nsFlatpakPrintPortal::OnWindowExportHandleDone, this)) {
NS_WARNING("Unable to get window handle for creating modal print dialog.");
return NS_ERROR_FAILURE;
}
mLoop = g_main_loop_new(NULL, FALSE);
return NS_OK;
}
void nsFlatpakPrintPortal::OnWindowExportHandleDone(
GtkWindow* aWindow, const char* aWindowHandleStr, gpointer aUserData) {
nsFlatpakPrintPortal* printPortal =
static_cast<nsFlatpakPrintPortal*>(aUserData);
printPortal->PreparePrint(aWindow, aWindowHandleStr);
}
/**
* Ask print portal to show the print dialog.
*
* Print and page settings and window handle are passed to the portal to prefill
* last used settings.
*/
void nsFlatpakPrintPortal::PreparePrint(GtkWindow* aWindow,
const char* aWindowHandleStr) {
GtkPrintSettings* gtkSettings = mPrintAndPageSettings->GetGtkPrintSettings();
GtkPageSetup* pageSetup = mPrintAndPageSettings->GetGtkPageSetup();
// We need to remember GtkWindow to unexport window handle after it is
// no longer needed by the portal dialog (apply only on non-X11 sessions).
if (GdkIsWaylandDisplay()) {
mParentWindow = aWindow;
}
GVariantBuilder opt_builder;
g_variant_builder_init(&opt_builder, G_VARIANT_TYPE_VARDICT);
char* token = g_strdup_printf("mozilla%d", g_random_int_range(0, G_MAXINT));
g_variant_builder_add(&opt_builder, "{sv}", "handle_token",
g_variant_new_string(token));
g_free(token);
GVariant* options = g_variant_builder_end(&opt_builder);
static auto s_gtk_print_settings_to_gvariant =
reinterpret_cast<GVariant* (*)(GtkPrintSettings*)>(
dlsym(RTLD_DEFAULT, "gtk_print_settings_to_gvariant"));
static auto s_gtk_page_setup_to_gvariant =
reinterpret_cast<GVariant* (*)(GtkPageSetup*)>(
dlsym(RTLD_DEFAULT, "gtk_page_setup_to_gvariant"));
if (!s_gtk_print_settings_to_gvariant || !s_gtk_page_setup_to_gvariant) {
mResult = GTK_PRINT_OPERATION_RESULT_ERROR;
FinishPrintDialog(nullptr);
return;
}
// Get translated window title
nsCOMPtr<nsIStringBundleService> bundleSvc =
do_GetService(NS_STRINGBUNDLE_CONTRACTID);
nsCOMPtr<nsIStringBundle> printBundle;
bundleSvc->CreateBundle("chrome://global/locale/printdialog.properties",
getter_AddRefs(printBundle));
nsAutoString intlPrintTitle;
printBundle->GetStringFromName("printTitleGTK", intlPrintTitle);
GError* error = nullptr;
GVariant* ret = g_dbus_proxy_call_sync(
mProxy, "PreparePrint",
g_variant_new(
"(ss@a{sv}@a{sv}@a{sv})", aWindowHandleStr,
NS_ConvertUTF16toUTF8(intlPrintTitle).get(), // Title of the window
s_gtk_print_settings_to_gvariant(gtkSettings),
s_gtk_page_setup_to_gvariant(pageSetup), options),
G_DBUS_CALL_FLAGS_NONE, -1, nullptr, &error);
if (ret == nullptr) {
NS_WARNING(
nsPrintfCString("Unable to call dbus proxy: %s", error->message).get());
g_error_free(error);
mResult = GTK_PRINT_OPERATION_RESULT_ERROR;
FinishPrintDialog(nullptr);
return;
}
const char* handle = nullptr;
g_variant_get(ret, "(&o)", &handle);
if (strcmp(aWindowHandleStr, handle) != 0) {
aWindowHandleStr = g_strdup(handle);
if (mResponseSignalId) {
g_dbus_connection_signal_unsubscribe(
g_dbus_proxy_get_connection(G_DBUS_PROXY(mProxy)), mResponseSignalId);
}
}
mResponseSignalId = g_dbus_connection_signal_subscribe(
g_dbus_proxy_get_connection(G_DBUS_PROXY(mProxy)),
"org.freedesktop.portal.Desktop", "org.freedesktop.portal.Request",
"Response", aWindowHandleStr, NULL, G_DBUS_SIGNAL_FLAGS_NO_MATCH_RULE,
&nsFlatpakPrintPortal::OnPreparePrintResponse, this, NULL);
}
void nsFlatpakPrintPortal::OnPreparePrintResponse(
GDBusConnection* connection, const char* sender_name,
const char* object_path, const char* interface_name,
const char* signal_name, GVariant* parameters, gpointer data) {
nsFlatpakPrintPortal* printPortal = static_cast<nsFlatpakPrintPortal*>(data);
printPortal->FinishPrintDialog(parameters);
}
/**
* When the dialog is accepted, read print and page settings and token.
*
* Token is later used for printing portal as print operation identifier.
* Print and page settings are modified in-place and stored to
* mPrintAndPageSettings.
*/
void nsFlatpakPrintPortal::FinishPrintDialog(GVariant* parameters) {
// This ends GetResult() method
if (mLoop) {
g_main_loop_quit(mLoop);
mLoop = nullptr;
}
if (!parameters) {
// mResult should be already defined
return;
}
guint32 response;
GVariant* options;
g_variant_get(parameters, "(u@a{sv})", &response, &options);
mResult = GTK_PRINT_OPERATION_RESULT_CANCEL;
if (response == 0) {
GVariant* v =
g_variant_lookup_value(options, "settings", G_VARIANT_TYPE_VARDICT);
static auto s_gtk_print_settings_new_from_gvariant =
reinterpret_cast<GtkPrintSettings* (*)(GVariant*)>(
dlsym(RTLD_DEFAULT, "gtk_print_settings_new_from_gvariant"));
GtkPrintSettings* printSettings = s_gtk_print_settings_new_from_gvariant(v);
g_variant_unref(v);
v = g_variant_lookup_value(options, "page-setup", G_VARIANT_TYPE_VARDICT);
static auto s_gtk_page_setup_new_from_gvariant =
reinterpret_cast<GtkPageSetup* (*)(GVariant*)>(
dlsym(RTLD_DEFAULT, "gtk_page_setup_new_from_gvariant"));
GtkPageSetup* pageSetup = s_gtk_page_setup_new_from_gvariant(v);
g_variant_unref(v);
g_variant_lookup(options, "token", "u", &mToken);
// Save native settings in the session object
mPrintAndPageSettings->SetGtkPrintSettings(printSettings);
mPrintAndPageSettings->SetGtkPageSetup(pageSetup);
// Portal consumes PDF file
mPrintAndPageSettings->SetOutputFormat(nsIPrintSettings::kOutputFormatPDF);
// We need to set to print to file
mPrintAndPageSettings->SetPrintToFile(true);
mResult = GTK_PRINT_OPERATION_RESULT_APPLY;
}
}
/**
* Get result of the print dialog.
*
* This call blocks until FinishPrintDialog is called.
*
*/
GtkPrintOperationResult nsFlatpakPrintPortal::GetResult() {
// If the mLoop has not been initialized we haven't go thru PreparePrint
// method
if (!NS_IsMainThread() || !mLoop) {
return GTK_PRINT_OPERATION_RESULT_ERROR;
}
// Calling g_main_loop_run stops current code until g_main_loop_quit is called
g_main_loop_run(mLoop);
// Free resources we've allocated in order to show print dialog.
#ifdef MOZ_WAYLAND
if (mParentWindow) {
GdkWindow* gdk_window = gtk_widget_get_window(GTK_WIDGET(mParentWindow));
static auto s_gdk_wayland_window_unexport_handle =
reinterpret_cast<void (*)(GdkWindow*)>(
dlsym(RTLD_DEFAULT, "gdk_wayland_window_unexport_handle"));
if (s_gdk_wayland_window_unexport_handle) {
s_gdk_wayland_window_unexport_handle(gdk_window);
}
}
#endif
return mResult;
}
/**
* Send file descriptor of the file which contains document to the portal to
* finish the print operation.
*/
NS_IMETHODIMP
nsFlatpakPrintPortal::Observe(nsISupports* aObject, const char* aTopic,
const char16_t* aData) {
// Check that written file match to the stored filename in case multiple
// print operations are in progress.
nsAutoString filenameStr;
mPrintAndPageSettings->GetToFileName(filenameStr);
if (!nsDependentString(aData).Equals(filenameStr)) {
// Different file is finished, not for this instance
return NS_OK;
}
int fd, idx;
fd = open(NS_ConvertUTF16toUTF8(filenameStr).get(), O_RDONLY | O_CLOEXEC);
static auto s_g_unix_fd_list_new = reinterpret_cast<GUnixFDList* (*)(void)>(
dlsym(RTLD_DEFAULT, "g_unix_fd_list_new"));
NS_ASSERTION(s_g_unix_fd_list_new,
"Cannot find g_unix_fd_list_new function.");
GUnixFDList* fd_list = s_g_unix_fd_list_new();
static auto s_g_unix_fd_list_append =
reinterpret_cast<gint (*)(GUnixFDList*, gint, GError**)>(
dlsym(RTLD_DEFAULT, "g_unix_fd_list_append"));
idx = s_g_unix_fd_list_append(fd_list, fd, NULL);
close(fd);
GVariantBuilder opt_builder;
g_variant_builder_init(&opt_builder, G_VARIANT_TYPE_VARDICT);
g_variant_builder_add(&opt_builder, "{sv}", "token",
g_variant_new_uint32(mToken));
g_dbus_proxy_call_with_unix_fd_list(
mProxy, "Print",
g_variant_new("(ssh@a{sv})", "", /* window */
"Print", /* title */
idx, g_variant_builder_end(&opt_builder)),
G_DBUS_CALL_FLAGS_NONE, -1, fd_list, NULL,
NULL, // TODO portal result cb function
nullptr); // data
g_object_unref(fd_list);
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
// Let the nsFlatpakPrintPortal instance die
os->RemoveObserver(this, "print-to-file-finished");
return NS_OK;
}
nsFlatpakPrintPortal::~nsFlatpakPrintPortal() {
if (mProxy) {
if (mResponseSignalId) {
g_dbus_connection_signal_unsubscribe(
g_dbus_proxy_get_connection(G_DBUS_PROXY(mProxy)), mResponseSignalId);
}
g_object_unref(mProxy);
}
if (mLoop) g_main_loop_quit(mLoop);
}
NS_IMETHODIMP
nsPrintDialogServiceGTK::Show(nsPIDOMWindowOuter* aParent,
nsIPrintSettings* aSettings) {
MOZ_ASSERT(aParent, "aParent must not be null");
MOZ_ASSERT(aSettings, "aSettings must not be null");
// Check for the flatpak portal first
nsCOMPtr<nsIGIOService> giovfs = do_GetService(NS_GIOSERVICE_CONTRACTID);
bool shouldUsePortal;
giovfs->ShouldUseFlatpakPortal(&shouldUsePortal);
if (shouldUsePortal && gtk_check_version(3, 22, 0) == nullptr) {
nsCOMPtr<nsIWidget> widget = WidgetUtils::DOMWindowToWidget(aParent);
NS_ASSERTION(widget, "Need a widget for dialog to be modal.");
GtkWindow* gtkParent = get_gtk_window_for_nsiwidget(widget);
NS_ASSERTION(gtkParent, "Need a GTK window for dialog to be modal.");
nsCOMPtr<nsPrintSettingsGTK> printSettingsGTK(do_QueryInterface(aSettings));
RefPtr<nsFlatpakPrintPortal> fpPrintPortal =
new nsFlatpakPrintPortal(printSettingsGTK);
nsresult rv = fpPrintPortal->PreparePrintRequest(gtkParent);
NS_ENSURE_SUCCESS(rv, rv);
// This blocks until nsFlatpakPrintPortal::FinishPrintDialog is called
GtkPrintOperationResult printDialogResult = fpPrintPortal->GetResult();
switch (printDialogResult) {
case GTK_PRINT_OPERATION_RESULT_APPLY: {
nsCOMPtr<nsIObserverService> os =
mozilla::services::GetObserverService();
NS_ENSURE_STATE(os);
// Observer waits until notified that the file with the content
// to print has been written.
rv = os->AddObserver(fpPrintPortal, "print-to-file-finished", false);
NS_ENSURE_SUCCESS(rv, rv);
break;
}
case GTK_PRINT_OPERATION_RESULT_CANCEL:
rv = NS_ERROR_ABORT;
break;
default:
NS_WARNING("Unexpected response");
rv = NS_ERROR_ABORT;
}
return rv;
}
nsPrintDialogWidgetGTK printDialog(aParent, aSettings);
nsresult rv = printDialog.ImportSettings(aSettings);
NS_ENSURE_SUCCESS(rv, rv);
const gint response = printDialog.Run();
// Handle the result
switch (response) {
case GTK_RESPONSE_OK: // Proceed
rv = printDialog.ExportSettings(aSettings);
break;
case GTK_RESPONSE_CANCEL:
case GTK_RESPONSE_CLOSE:
case GTK_RESPONSE_DELETE_EVENT:
case GTK_RESPONSE_NONE:
rv = NS_ERROR_ABORT;
break;
case GTK_RESPONSE_APPLY: // Print preview
default:
NS_WARNING("Unexpected response");
rv = NS_ERROR_ABORT;
}
return rv;
}
NS_IMETHODIMP
nsPrintDialogServiceGTK::ShowPageSetup(nsPIDOMWindowOuter* aParent,
nsIPrintSettings* aNSSettings) {
MOZ_ASSERT(aParent, "aParent must not be null");
MOZ_ASSERT(aNSSettings, "aSettings must not be null");
NS_ENSURE_TRUE(aNSSettings, NS_ERROR_FAILURE);
nsCOMPtr<nsIWidget> widget = WidgetUtils::DOMWindowToWidget(aParent);
NS_ASSERTION(widget, "Need a widget for dialog to be modal.");
GtkWindow* gtkParent = get_gtk_window_for_nsiwidget(widget);
NS_ASSERTION(gtkParent, "Need a GTK window for dialog to be modal.");
nsCOMPtr<nsPrintSettingsGTK> aNSSettingsGTK(do_QueryInterface(aNSSettings));
if (!aNSSettingsGTK) return NS_ERROR_FAILURE;
// We need to init the prefs here because aNSSettings in its current form is a
// dummy in both uses of the word
nsCOMPtr<nsIPrintSettingsService> psService =
do_GetService("@mozilla.org/gfx/printsettings-service;1");
if (psService) {
nsString printName;
aNSSettings->GetPrinterName(printName);
if (printName.IsVoid()) {
psService->GetLastUsedPrinterName(printName);
aNSSettings->SetPrinterName(printName);
}
psService->InitPrintSettingsFromPrefs(aNSSettings, true,
nsIPrintSettings::kInitSaveAll);
}
// Frustratingly, gtk_print_run_page_setup_dialog doesn't tell us whether
// the user cancelled or confirmed the dialog! So to avoid needlessly
// refreshing the preview when Page Setup was cancelled, we compare the
// serializations of old and new settings; if they're the same, bail out.
GtkPrintSettings* gtkSettings = aNSSettingsGTK->GetGtkPrintSettings();
GtkPageSetup* oldPageSetup = aNSSettingsGTK->GetGtkPageSetup();
GKeyFile* oldKeyFile = g_key_file_new();
gtk_page_setup_to_key_file(oldPageSetup, oldKeyFile, nullptr);
gsize oldLength;
gchar* oldData = g_key_file_to_data(oldKeyFile, &oldLength, nullptr);
g_key_file_free(oldKeyFile);
GtkPageSetup* newPageSetup =
gtk_print_run_page_setup_dialog(gtkParent, oldPageSetup, gtkSettings);
GKeyFile* newKeyFile = g_key_file_new();
gtk_page_setup_to_key_file(newPageSetup, newKeyFile, nullptr);
gsize newLength;
gchar* newData = g_key_file_to_data(newKeyFile, &newLength, nullptr);
g_key_file_free(newKeyFile);
bool unchanged =
(oldLength == newLength && !memcmp(oldData, newData, oldLength));
g_free(oldData);
g_free(newData);
if (unchanged) {
g_object_unref(newPageSetup);
return NS_ERROR_ABORT;
}
aNSSettingsGTK->SetGtkPageSetup(newPageSetup);
// Now newPageSetup has a refcount of 2 (SetGtkPageSetup will addref), put it
// to 1 so if this gets replaced we don't leak.
g_object_unref(newPageSetup);
if (psService)
psService->SavePrintSettingsToPrefs(
aNSSettings, true,
nsIPrintSettings::kInitSaveOrientation |
nsIPrintSettings::kInitSavePaperSize |
nsIPrintSettings::kInitSaveUnwriteableMargins);
return NS_OK;
}
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