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cef/libcef/browser/browser_host_impl_gtk.cc

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// Copyright (c) 2012 The Chromium Embedded Framework Authors.
// Portions copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "libcef/browser/browser_host_impl.h"
#include <gtk/gtk.h>
#include <sys/sysinfo.h>
#include "libcef/browser/thread_util.h"
#include "base/bind.h"
#include "base/strings/utf_string_conversions.h"
#include "content/public/browser/native_web_keyboard_event.h"
#include "content/public/browser/web_contents_view.h"
#include "content/public/common/file_chooser_params.h"
#include "content/public/common/renderer_preferences.h"
#include "grit/cef_strings.h"
#include "grit/ui_strings.h"
#include "net/base/mime_util.h"
#include "third_party/WebKit/public/web/gtk/WebInputEventFactory.h"
#include "third_party/WebKit/public/web/WebInputEvent.h"
#include "ui/base/l10n/l10n_util.h"
namespace {
void DestroyBrowser(CefRefPtr<CefBrowserHostImpl> browser) {
// Force the browser to be destroyed and release the reference added in
// PlatformCreateWindow().
browser->WindowDestroyed();
}
void browser_destroy(GtkWidget* widget, CefBrowserHostImpl* browser) {
// Destroy the browser host after window destruction is complete.
CEF_POST_TASK(CEF_UIT, base::Bind(DestroyBrowser, browser));
}
void window_destroy(GtkWidget* widget, gpointer data) {
}
gboolean window_delete_event(GtkWidget* widget, GdkEvent* event,
CefBrowserHostImpl* browser) {
// Protect against multiple requests to close while the close is pending.
if (browser && browser->destruction_state() <=
CefBrowserHostImpl::DESTRUCTION_STATE_PENDING) {
if (browser->destruction_state() ==
CefBrowserHostImpl::DESTRUCTION_STATE_NONE) {
// Request that the browser close.
browser->CloseBrowser(false);
}
// Cancel the close.
return TRUE;
}
// Allow the close.
return FALSE;
}
std::string GetDescriptionFromMimeType(const std::string& mime_type) {
// Check for wild card mime types and return an appropriate description.
static const struct {
const char* mime_type;
int string_id;
} kWildCardMimeTypes[] = {
{ "audio", IDS_APP_AUDIO_FILES },
{ "image", IDS_APP_IMAGE_FILES },
{ "text", IDS_APP_TEXT_FILES },
{ "video", IDS_APP_VIDEO_FILES },
};
for (size_t i = 0;
i < sizeof(kWildCardMimeTypes) / sizeof(kWildCardMimeTypes[0]); ++i) {
if (mime_type == std::string(kWildCardMimeTypes[i].mime_type) + "/*")
return l10n_util::GetStringUTF8(kWildCardMimeTypes[i].string_id);
}
return std::string();
}
void AddFiltersForAcceptTypes(GtkFileChooser* chooser,
const std::vector<base::string16>& accept_types,
bool include_all_files) {
bool has_filter = false;
for (size_t i = 0; i < accept_types.size(); ++i) {
std::string ascii_type = UTF16ToASCII(accept_types[i]);
if (ascii_type.length()) {
// Just treat as extension if contains '.' as the first character.
if (ascii_type[0] == '.') {
GtkFileFilter* filter = gtk_file_filter_new();
std::string pattern = "*" + ascii_type;
gtk_file_filter_add_pattern(filter, pattern.c_str());
gtk_file_filter_set_name(filter, pattern.c_str());
gtk_file_chooser_add_filter(chooser, filter);
if (!has_filter)
has_filter = true;
} else {
// Otherwise convert mime type to one or more extensions.
GtkFileFilter* filter = NULL;
std::string description = GetDescriptionFromMimeType(ascii_type);
bool description_from_ext = description.empty();
std::vector<base::FilePath::StringType> ext;
net::GetExtensionsForMimeType(ascii_type, &ext);
for (size_t x = 0; x < ext.size(); ++x) {
if (!filter)
filter = gtk_file_filter_new();
std::string pattern = "*." + ext[x];
gtk_file_filter_add_pattern(filter, pattern.c_str());
if (description_from_ext) {
if (x != 0)
description += ";";
description += pattern;
}
}
if (filter) {
gtk_file_filter_set_name(filter, description.c_str());
gtk_file_chooser_add_filter(chooser, filter);
if (!has_filter)
has_filter = true;
}
}
}
}
// Add the *.* filter, but only if we have added other filters (otherwise it
// is implied).
if (include_all_files && has_filter) {
GtkFileFilter* filter = gtk_file_filter_new();
gtk_file_filter_add_pattern(filter, "*");
gtk_file_filter_set_name(filter,
l10n_util::GetStringUTF8(IDS_SAVEAS_ALL_FILES).c_str());
gtk_file_chooser_add_filter(chooser, filter);
}
}
bool RunFileDialog(const content::FileChooserParams& params,
CefWindowHandle widget,
std::vector<base::FilePath>* files) {
GtkFileChooserAction action;
const gchar* accept_button;
if (params.mode == content::FileChooserParams::Open ||
params.mode == content::FileChooserParams::OpenMultiple) {
action = GTK_FILE_CHOOSER_ACTION_OPEN;
accept_button = GTK_STOCK_OPEN;
} else if (params.mode == content::FileChooserParams::Save) {
action = GTK_FILE_CHOOSER_ACTION_SAVE;
accept_button = GTK_STOCK_SAVE;
} else {
NOTREACHED();
return false;
}
// Consider default file name if any.
base::FilePath default_file_name(params.default_file_name);
std::string base_name;
if (!default_file_name.empty())
base_name = default_file_name.BaseName().value();
std::string title;
if (!params.title.empty()) {
title = base::UTF16ToUTF8(params.title);
} else {
int string_id = 0;
switch (params.mode) {
case content::FileChooserParams::Open:
string_id = IDS_OPEN_FILE_DIALOG_TITLE;
break;
case content::FileChooserParams::OpenMultiple:
string_id = IDS_OPEN_FILES_DIALOG_TITLE;
break;
case content::FileChooserParams::Save:
string_id = IDS_SAVE_AS_DIALOG_TITLE;
break;
default:
break;
}
title = l10n_util::GetStringUTF8(string_id);
}
GtkWidget* window = gtk_widget_get_toplevel(GTK_WIDGET(widget));
GtkWidget* dialog = gtk_file_chooser_dialog_new(
title.c_str(),
GTK_WINDOW(window),
action,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
accept_button, GTK_RESPONSE_ACCEPT,
NULL);
if (params.mode == content::FileChooserParams::OpenMultiple) {
gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(dialog), TRUE);
} else if (params.mode == content::FileChooserParams::Save) {
gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(dialog),
TRUE);
}
if (params.mode == content::FileChooserParams::Save && !base_name.empty()) {
gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(dialog),
base_name.c_str());
}
AddFiltersForAcceptTypes(GTK_FILE_CHOOSER(dialog), params.accept_types, true);
bool success = false;
if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT) {
if (params.mode == content::FileChooserParams::Open ||
params.mode == content::FileChooserParams::Save) {
char* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog));
files->push_back(base::FilePath(filename));
success = true;
} else if (params.mode == content::FileChooserParams::OpenMultiple) {
GSList* filenames =
gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(dialog));
if (filenames) {
for (GSList* iter = filenames; iter != NULL;
iter = g_slist_next(iter)) {
base::FilePath path(static_cast<char*>(iter->data));
g_free(iter->data);
files->push_back(path);
}
g_slist_free(filenames);
success = true;
}
}
}
gtk_widget_destroy(dialog);
return success;
}
// Returns the number of seconds since system boot.
long GetSystemUptime() {
struct sysinfo info;
if (sysinfo(&info) == 0)
return info.uptime;
return 0;
}
} // namespace
bool CefBrowserHostImpl::PlatformCreateWindow() {
GtkWidget* window;
GtkWidget* parentView = window_info_.parent_widget;
if (parentView == NULL) {
// Create a new window.
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);
parentView = gtk_vbox_new(FALSE, 0);
gtk_container_add(GTK_CONTAINER(window), parentView);
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
gtk_widget_show_all(GTK_WIDGET(window));
g_signal_connect(G_OBJECT(window), "destroy",
G_CALLBACK(window_destroy), NULL);
g_signal_connect(G_OBJECT(window), "delete_event",
G_CALLBACK(window_delete_event), this);
window_info_.parent_widget = parentView;
}
// Add a reference that will be released in the destroy handler.
AddRef();
// Parent the TabContents to the browser window.
window_info_.widget = web_contents_->GetView()->GetNativeView();
gtk_container_add(GTK_CONTAINER(window_info_.parent_widget),
window_info_.widget);
g_signal_connect(G_OBJECT(window_info_.widget), "destroy",
G_CALLBACK(browser_destroy), this);
// As an additional requirement on Linux, we must set the colors for the
// render widgets in webkit.
content::RendererPreferences* prefs =
web_contents_->GetMutableRendererPrefs();
prefs->focus_ring_color = SkColorSetARGB(255, 229, 151, 0);
prefs->thumb_active_color = SkColorSetRGB(244, 244, 244);
prefs->thumb_inactive_color = SkColorSetRGB(234, 234, 234);
prefs->track_color = SkColorSetRGB(211, 211, 211);
prefs->active_selection_bg_color = SkColorSetRGB(30, 144, 255);
prefs->active_selection_fg_color = SK_ColorWHITE;
prefs->inactive_selection_bg_color = SkColorSetRGB(200, 200, 200);
prefs->inactive_selection_fg_color = SkColorSetRGB(50, 50, 50);
return true;
}
void CefBrowserHostImpl::PlatformCloseWindow() {
if (window_info_.widget != NULL) {
GtkWidget* window =
gtk_widget_get_toplevel(GTK_WIDGET(window_info_.widget));
// Send the "delete_event" signal.
GdkEvent event;
memset(&event, 0, sizeof(GdkEvent));
event.any.type = GDK_DELETE;
event.any.send_event = TRUE;
event.any.window = window->window;
gtk_main_do_event(&event);
}
}
void CefBrowserHostImpl::PlatformSizeTo(int width, int height) {
if (window_info_.widget != NULL) {
GtkWidget* window =
gtk_widget_get_toplevel(GTK_WIDGET(window_info_.widget));
gtk_widget_set_size_request(window, width, height);
}
}
CefWindowHandle CefBrowserHostImpl::PlatformGetWindowHandle() {
return IsWindowRenderingDisabled() ?
window_info_.parent_widget :
window_info_.widget;
}
bool CefBrowserHostImpl::PlatformViewText(const std::string& text) {
CEF_REQUIRE_UIT();
char buff[] = "/tmp/CEFSourceXXXXXX";
int fd = mkstemp(buff);
if (fd == -1)
return false;
FILE* srcOutput = fdopen(fd, "w+");
if (!srcOutput)
return false;
if (fputs(text.c_str(), srcOutput) < 0) {
fclose(srcOutput);
return false;
}
fclose(srcOutput);
std::string newName(buff);
newName.append(".txt");
if (rename(buff, newName.c_str()) != 0)
return false;
std::string openCommand("xdg-open ");
openCommand += newName;
if (system(openCommand.c_str()) != 0)
return false;
return true;
}
void CefBrowserHostImpl::PlatformHandleKeyboardEvent(
const content::NativeWebKeyboardEvent& event) {
// TODO(cef): Is something required here to handle shortcut keys?
}
void CefBrowserHostImpl::PlatformRunFileChooser(
const content::FileChooserParams& params,
RunFileChooserCallback callback) {
std::vector<base::FilePath> files;
if (params.mode == content::FileChooserParams::Open ||
params.mode == content::FileChooserParams::OpenMultiple ||
params.mode == content::FileChooserParams::Save) {
::RunFileDialog(params, PlatformGetWindowHandle(), &files);
} else {
NOTIMPLEMENTED();
}
callback.Run(files);
}
void CefBrowserHostImpl::PlatformHandleExternalProtocol(const GURL& url) {
}
// static
bool CefBrowserHostImpl::IsWindowRenderingDisabled(const CefWindowInfo& info) {
return info.windowless_rendering_enabled ? true : false;
}
bool CefBrowserHostImpl::IsTransparent() {
return window_info_.transparent_painting_enabled ? true : false;
}
void CefBrowserHostImpl::PlatformTranslateKeyEvent(
content::NativeWebKeyboardEvent& result,
const CefKeyEvent& key_event) {
// Use a synthetic GdkEventKey in order to obtain the windowsKeyCode member
// from the NativeWebKeyboardEvent constructor. This is the only member
// which cannot be easily translated (without hardcoding keyCodes).
guint state = 0;
if (key_event.modifiers & EVENTFLAG_SHIFT_DOWN)
state |= GDK_SHIFT_MASK;
if (key_event.modifiers & EVENTFLAG_CAPS_LOCK_ON)
state |= GDK_LOCK_MASK;
if (key_event.modifiers & EVENTFLAG_CONTROL_DOWN)
state |= GDK_CONTROL_MASK;
if (key_event.modifiers & EVENTFLAG_ALT_DOWN)
state |= GDK_MOD1_MASK;
if (key_event.modifiers & EVENTFLAG_LEFT_MOUSE_BUTTON)
state |= GDK_BUTTON1_MASK;
if (key_event.modifiers & EVENTFLAG_MIDDLE_MOUSE_BUTTON)
state |= GDK_BUTTON2_MASK;
if (key_event.modifiers & EVENTFLAG_RIGHT_MOUSE_BUTTON)
state |= GDK_BUTTON3_MASK;
GdkKeymap* keymap = gdk_keymap_get_for_display(gdk_display_get_default());
GdkKeymapKey *keys = NULL;
gint n_keys = 0;
if (gdk_keymap_get_entries_for_keyval(keymap, key_event.native_key_code,
&keys, &n_keys)) {
GdkEventKey event;
event.type = GDK_KEY_PRESS;
event.window = NULL;
event.send_event = 0;
event.time = 0;
event.state = state;
event.keyval = key_event.native_key_code;
event.length = 0;
event.string = NULL;
event.hardware_keycode = keys[0].keycode;
event.group = keys[0].group;
event.is_modifier = 0;
g_free(keys);
result = content::NativeWebKeyboardEvent(
reinterpret_cast<GdkEvent*>(&event));
}
result.timeStampSeconds = GetSystemUptime();
switch (key_event.type) {
case KEYEVENT_RAWKEYDOWN:
case KEYEVENT_KEYDOWN:
result.type = blink::WebInputEvent::RawKeyDown;
break;
case KEYEVENT_KEYUP:
result.type = blink::WebInputEvent::KeyUp;
break;
case KEYEVENT_CHAR:
result.type = blink::WebInputEvent::Char;
break;
default:
NOTREACHED();
}
}
void CefBrowserHostImpl::PlatformTranslateClickEvent(
blink::WebMouseEvent& result,
const CefMouseEvent& mouse_event,
MouseButtonType type,
bool mouseUp, int clickCount) {
PlatformTranslateMouseEvent(result, mouse_event);
switch (type) {
case MBT_LEFT:
result.type = mouseUp ? blink::WebInputEvent::MouseUp :
blink::WebInputEvent::MouseDown;
result.button = blink::WebMouseEvent::ButtonLeft;
break;
case MBT_MIDDLE:
result.type = mouseUp ? blink::WebInputEvent::MouseUp :
blink::WebInputEvent::MouseDown;
result.button = blink::WebMouseEvent::ButtonMiddle;
break;
case MBT_RIGHT:
result.type = mouseUp ? blink::WebInputEvent::MouseUp :
blink::WebInputEvent::MouseDown;
result.button = blink::WebMouseEvent::ButtonRight;
break;
default:
NOTREACHED();
}
result.clickCount = clickCount;
}
void CefBrowserHostImpl::PlatformTranslateMoveEvent(
blink::WebMouseEvent& result,
const CefMouseEvent& mouse_event,
bool mouseLeave) {
PlatformTranslateMouseEvent(result, mouse_event);
if (!mouseLeave) {
result.type = blink::WebInputEvent::MouseMove;
if (mouse_event.modifiers & EVENTFLAG_LEFT_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::ButtonLeft;
else if (mouse_event.modifiers & EVENTFLAG_MIDDLE_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::ButtonMiddle;
else if (mouse_event.modifiers & EVENTFLAG_RIGHT_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::ButtonRight;
else
result.button = blink::WebMouseEvent::ButtonNone;
} else {
result.type = blink::WebInputEvent::MouseLeave;
result.button = blink::WebMouseEvent::ButtonNone;
}
result.clickCount = 0;
}
void CefBrowserHostImpl::PlatformTranslateWheelEvent(
blink::WebMouseWheelEvent& result,
const CefMouseEvent& mouse_event,
int deltaX, int deltaY) {
result = blink::WebMouseWheelEvent();
PlatformTranslateMouseEvent(result, mouse_event);
result.type = blink::WebInputEvent::MouseWheel;
static const double scrollbarPixelsPerGtkTick = 40.0;
result.deltaX = deltaX;
result.deltaY = deltaY;
result.wheelTicksX = result.deltaX / scrollbarPixelsPerGtkTick;
result.wheelTicksY = result.deltaY / scrollbarPixelsPerGtkTick;
result.hasPreciseScrollingDeltas = true;
// Unless the phase and momentumPhase are passed in as parameters to this
// function, there is no way to know them
result.phase = blink::WebMouseWheelEvent::PhaseNone;
result.momentumPhase = blink::WebMouseWheelEvent::PhaseNone;
if (mouse_event.modifiers & EVENTFLAG_LEFT_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::ButtonLeft;
else if (mouse_event.modifiers & EVENTFLAG_MIDDLE_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::ButtonMiddle;
else if (mouse_event.modifiers & EVENTFLAG_RIGHT_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::ButtonRight;
else
result.button = blink::WebMouseEvent::ButtonNone;
}
void CefBrowserHostImpl::PlatformTranslateMouseEvent(
blink::WebMouseEvent& result,
const CefMouseEvent& mouse_event) {
// position
result.x = mouse_event.x;
result.y = mouse_event.y;
result.windowX = result.x;
result.windowY = result.y;
result.globalX = result.x;
result.globalY = result.y;
// global position
if (IsWindowRenderingDisabled()) {
GetClient()->GetRenderHandler()->GetScreenPoint(GetBrowser(),
result.x, result.y,
result.globalX, result.globalY);
} else {
GtkWidget* window = gtk_widget_get_toplevel(GetWindowHandle());
GdkWindow* gdk_window = gtk_widget_get_window(window);
gint xorigin, yorigin;
gdk_window_get_root_origin(gdk_window, &xorigin, &yorigin);
result.globalX = xorigin + result.x;
result.globalY = yorigin + result.y;
}
// modifiers
result.modifiers |= TranslateModifiers(mouse_event.modifiers);
// timestamp
result.timeStampSeconds = GetSystemUptime();
}
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