gtk_im_context_wrapper.cc revision 513209b27ff55e2841eac0e4120199c23acce758
1c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Copyright (c) 2010 The Chromium Authors. All rights reserved. 2c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Use of this source code is governed by a BSD-style license that can be 3c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// found in the LICENSE file. 4c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 5c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/renderer_host/gtk_im_context_wrapper.h" 6c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 7c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <gdk/gdk.h> 8c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <gdk/gdkkeysyms.h> 9c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <gtk/gtk.h> 10c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <algorithm> 11c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 12c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "app/l10n_util.h" 13c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/logging.h" 14c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/string_util.h" 15c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/third_party/icu/icu_utf.h" 163345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#include "base/utf_string_conversions.h" 17513209b27ff55e2841eac0e4120199c23acce758Ben Murdoch#include "chrome/app/chrome_command_ids.h" 18c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/gtk/gtk_util.h" 193345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#if !defined(TOOLKIT_VIEWS) 20c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/gtk/menu_gtk.h" 213345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#endif 22c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/renderer_host/render_widget_host.h" 23c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/renderer_host/render_widget_host_view_gtk.h" 24c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/common/native_web_keyboard_event.h" 25c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/common/render_messages.h" 26513209b27ff55e2841eac0e4120199c23acce758Ben Murdoch#include "gfx/gtk_util.h" 27c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "gfx/rect.h" 28c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "grit/generated_resources.h" 29c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "third_party/skia/include/core/SkColor.h" 30c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 31c407dc5cd9bdc5668497f21b26b09d988ab439deBen MurdochGtkIMContextWrapper::GtkIMContextWrapper(RenderWidgetHostViewGtk* host_view) 32c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch : host_view_(host_view), 33c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch context_(gtk_im_multicontext_new()), 34c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch context_simple_(gtk_im_context_simple_new()), 35c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_focused_(false), 36c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_(false), 37c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_enabled_(false), 38c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_(false), 39c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_start_(0), 40c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_end_(0), 413345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick is_preedit_changed_(false), 423345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick suppress_next_commit_(false) { 43c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(context_); 44c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(context_simple_); 45c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 46c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_ and context_simple_ share the same callback handlers. 47c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // All data come from them are treated equally. 48c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_ is for full input method support. 49c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_simple_ is for supporting dead/compose keys when input method is 50c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // disabled by webkit, eg. in password input box. 51c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "preedit_start", 52c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditStartThunk), this); 53c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "preedit_end", 54c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditEndThunk), this); 55c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "preedit_changed", 56c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditChangedThunk), this); 57c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "commit", 58c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleCommitThunk), this); 59c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 60c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "preedit_start", 61c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditStartThunk), this); 62c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "preedit_end", 63c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditEndThunk), this); 64c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "preedit_changed", 65c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditChangedThunk), this); 66c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "commit", 67c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleCommitThunk), this); 68c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 69c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* widget = host_view->native_view(); 70c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(widget); 71c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 72c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(widget, "realize", 73c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleHostViewRealizeThunk), this); 74c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(widget, "unrealize", 75c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleHostViewUnrealizeThunk), this); 76c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 77c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Set client window if the widget is already realized. 78c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch HandleHostViewRealize(widget); 79c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 80c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 81c407dc5cd9bdc5668497f21b26b09d988ab439deBen MurdochGtkIMContextWrapper::~GtkIMContextWrapper() { 82c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (context_) 83c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_unref(context_); 84c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (context_simple_) 85c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_unref(context_simple_); 86c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 87c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 88c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessKeyEvent(GdkEventKey* event) { 893345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick suppress_next_commit_ = false; 903345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 91c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Indicates preedit-changed and commit signal handlers that we are 92c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // processing a key event. 93c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = true; 94c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Reset this flag so that we can know if preedit is changed after 95c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // processing this key event. 96c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_preedit_changed_ = false; 97c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Clear it so that we can know if something needs committing after 98c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // processing this key event. 99c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch commit_text_.clear(); 100c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 101c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // According to Document Object Model (DOM) Level 3 Events Specification 102c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Appendix A: Keyboard events and key identifiers 103c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // http://www.w3.org/TR/DOM-Level-3-Events/keyset.html: 104c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The event sequence would be: 105c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 1. keydown 106c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 2. textInput 107c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 3. keyup 108c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 109c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // So keydown must be sent to webkit before sending input method result, 110c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // while keyup must be sent afterwards. 111c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // However on Windows, if a keydown event has been processed by IME, its 112c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // virtual keycode will be changed to VK_PROCESSKEY(0xE5) before being sent 113c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // to application. 114c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To emulate the windows behavior as much as possible, we need to send the 115c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // key event to the GtkIMContext object first, and decide whether or not to 116c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // send the original key event to webkit according to the result from IME. 117c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 118c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If IME is enabled by WebKit, this event will be dispatched to context_ 119c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // to get full IME support. Otherwise it'll be dispatched to 120c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_simple_, so that dead/compose keys can still work. 121c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 122c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It sends a "commit" signal when it has a character to be inserted 123c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // even when we use a US keyboard so that we can send a Char event 124c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // (or an IME event) to the renderer in our "commit"-signal handler. 125c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We should send a KeyDown (or a KeyUp) event before dispatching this 126c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // event to the GtkIMContext object (and send a Char event) so that WebKit 127c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // can dispatch the JavaScript events in the following order: onkeydown(), 128c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // onkeypress(), and onkeyup(). (Many JavaScript pages assume this.) 129c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gboolean filtered = false; 130c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_) { 131c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch filtered = gtk_im_context_filter_keypress(context_, event); 132c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else { 133c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch filtered = gtk_im_context_filter_keypress(context_simple_, event); 134c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 135c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 136c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Reset this flag here, as it's only used in input method callbacks. 137c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = false; 138c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 139c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent wke(event); 140c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 1413345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // If the key event was handled by the input method, then we need to prevent 1423345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // RenderView::UnhandledKeyboardEvent() from processing it. 1433345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // Otherwise unexpected result may occur. For example if it's a 1443345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // Backspace key event, the browser may go back to previous page. 1453345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick if (filtered) 1463345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick wke.skip_in_browser = true; 1473345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 148c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send filtered keydown event before sending IME result. 149c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (event->type == GDK_KEY_PRESS && filtered) 150c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ProcessFilteredKeyPressEvent(&wke); 151c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 152c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send IME results. In most cases, it's only available if the key event 153c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // is filtered by IME. But in rare cases, an unfiltered key event may also 154c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // generate IME results. 155c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Any IME results generated by a unfiltered key down event must be sent 156c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // before the key down event, to avoid some tricky issues. For example, 157c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // when using latin-post input method, pressing 'a' then Backspace, may 158c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // generate following events in sequence: 159c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 1. keydown 'a' (filtered) 160c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 2. preedit changed to "a" 161c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 3. keyup 'a' (unfiltered) 162c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 4. keydown Backspace (unfiltered) 163c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 5. commit "a" 164c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 6. preedit end 165c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 7. keyup Backspace (unfiltered) 166c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 167c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // In this case, the input box will be in a strange state if keydown 168c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Backspace is sent to webkit before commit "a" and preedit end. 169c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ProcessInputMethodResult(event, filtered); 170c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 171c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send unfiltered keydown and keyup events after sending IME result. 172c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (event->type == GDK_KEY_PRESS && !filtered) 173c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ProcessUnfilteredKeyPressEvent(&wke); 174c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch else if (event->type == GDK_KEY_RELEASE) 175c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(wke); 176c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 177c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 178c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::UpdateInputMethodState(WebKit::WebTextInputType type, 179c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const gfx::Rect& caret_rect) { 1803345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick suppress_next_commit_ = false; 1813345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 182c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The renderer has updated its IME status. 183c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Control the GtkIMContext object according to this status. 184c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!context_ || !is_focused_) 185c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 186c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 187c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(!is_in_key_event_handler_); 188c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 189c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool is_enabled = (type == WebKit::WebTextInputTypeText); 190c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_ != is_enabled) { 191c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_enabled_ = is_enabled; 192c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled) 193c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_); 194c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch else 195c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_); 196c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 197c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 198c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled) { 199c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Updates the position of the IME candidate window. 200c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The position sent from the renderer is a relative one, so we need to 201c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // attach the GtkIMContext object to this window before changing the 202c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // position. 203c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GdkRectangle cursor_rect(caret_rect.ToGdkRectangle()); 204c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_cursor_location(context_, &cursor_rect); 205c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 206c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 207c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 208c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::OnFocusIn() { 209c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_focused_) 210c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 211c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 212c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Tracks the focused state so that we can give focus to the 213c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // GtkIMContext object correctly later when IME is enabled by WebKit. 214c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_focused_ = true; 215c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 216c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Notify the GtkIMContext object of this focus-in event only if IME is 217c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // enabled by WebKit. 218c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_) 219c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_); 220c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 221c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_simple_ is always enabled. 222c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Actually it doesn't care focus state at all. 223c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_simple_); 224c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 225c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Enables RenderWidget's IME related events, so that we can be notified 226c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // when WebKit wants to enable or disable IME. 227c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (host_view_->GetRenderWidgetHost()) 228c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->SetInputMethodActive(true); 229c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 230c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 231c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::OnFocusOut() { 232c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_focused_) 233c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 234c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 235c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Tracks the focused state so that we won't give focus to the 236c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // GtkIMContext object unexpectly. 237c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_focused_ = false; 238c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 239c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Notify the GtkIMContext object of this focus-out event only if IME is 240c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // enabled by WebKit. 241c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_) { 242c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To reset the GtkIMContext object and prevent data loss. 243c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ConfirmComposition(); 244c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_); 245c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 246c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 247c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To make sure it'll be in correct state when focused in again. 248c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_reset(context_simple_); 249c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_simple_); 250c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 251c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = false; 252c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 253c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Disable RenderWidget's IME related events to save bandwidth. 254c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (host_view_->GetRenderWidgetHost()) 255c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->SetInputMethodActive(false); 256c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 257c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 2583345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#if !defined(TOOLKIT_VIEWS) 2593345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick// Not defined for views because the views context menu doesn't 2603345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick// implement input methods yet. 261c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::AppendInputMethodsContextMenu(MenuGtk* menu) { 262c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gboolean show_input_method_menu = TRUE; 263c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 264c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_get(gtk_widget_get_settings(GTK_WIDGET(host_view_->native_view())), 265c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch "gtk-show-input-method-menu", &show_input_method_menu, NULL); 266c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!show_input_method_menu) 267c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 268c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 269513209b27ff55e2841eac0e4120199c23acce758Ben Murdoch std::string label = gfx::ConvertAcceleratorsFromWindowsStyle( 270c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch l10n_util::GetStringUTF8(IDS_CONTENT_CONTEXT_INPUT_METHODS_MENU)); 271c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* menuitem = gtk_menu_item_new_with_mnemonic(label.c_str()); 272c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* submenu = gtk_menu_new(); 273c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), submenu); 274c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_multicontext_append_menuitems(GTK_IM_MULTICONTEXT(context_), 275c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GTK_MENU_SHELL(submenu)); 276c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch menu->AppendSeparator(); 277c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch menu->AppendMenuItem(IDC_INPUT_METHODS_MENU, menuitem); 278c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 2793345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#endif 280c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 281c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::CancelComposition() { 282c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_enabled_) 283c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 284c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 285c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(!is_in_key_event_handler_); 286c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 287c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To prevent any text from being committed when resetting the |context_|; 288c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = true; 2893345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick suppress_next_commit_ = true; 290c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 291c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_reset(context_); 292c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_reset(context_simple_); 293c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 294c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_focused_) { 295c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Some input methods may not honour the reset call. Focusing out/in the 296c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // |context_| to make sure it gets reset correctly. 297c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_); 298c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_); 299c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 300c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 301c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = false; 302c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_.clear(); 303c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_underlines_.clear(); 304c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch commit_text_.clear(); 305c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 306c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = false; 307c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 308c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 309c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochbool GtkIMContextWrapper::NeedCommitByForwardingCharEvent() { 310c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If there is no composition text and has only one character to be 311c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // committed, then the character will be send to webkit as a Char event 312c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // instead of a confirmed composition text. 313c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It should be fine to handle BMP character only, as non-BMP characters 314c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // can always be committed as confirmed composition text. 315c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return !is_composing_text_ && commit_text_.length() == 1; 316c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 317c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 318c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessFilteredKeyPressEvent( 319c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent* wke) { 320c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Copied from third_party/WebKit/WebCore/page/EventHandler.cpp 321c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 322c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Match key code of composition keydown event on windows. 323c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // IE sends VK_PROCESSKEY which has value 229; 324c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 325c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Please refer to following documents for detals: 326c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // - Virtual-Key Codes 327c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // http://msdn.microsoft.com/en-us/library/ms645540(VS.85).aspx 328c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // - How the IME System Works 329c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // http://msdn.microsoft.com/en-us/library/cc194848.aspx 330c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // - ImmGetVirtualKey Function 331c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // http://msdn.microsoft.com/en-us/library/dd318570(VS.85).aspx 332c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const int kCompositionEventKeyCode = 229; 333c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 334c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If IME has filtered this event, then replace virtual key code with 335c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // VK_PROCESSKEY. See comment in ProcessKeyEvent() for details. 336c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It's only required for keydown events. 337c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To emulate windows behavior, when input method is enabled, if the commit 338c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // text can be emulated by a Char event, then don't do this replacement. 339c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!NeedCommitByForwardingCharEvent()) { 340c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->windowsKeyCode = kCompositionEventKeyCode; 341c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // keyidentifier must be updated accordingly, otherwise this key event may 342c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // still be processed by webkit. 343c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->setKeyIdentifierFromWindowsKeyCode(); 344c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 345c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(*wke); 346c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 347c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 348c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessUnfilteredKeyPressEvent( 349c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent* wke) { 350c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send keydown event as it, because it's not filtered by IME. 351c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(*wke); 352c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 353c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // IME is disabled by WebKit or the GtkIMContext object cannot handle 354c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // this key event. 355c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // This case is caused by two reasons: 356c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 1. The given key event is a control-key event, (e.g. return, page up, 357c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // page down, tab, arrows, etc.) or; 358c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 2. The given key event is not a control-key event but printable 359c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // characters aren't assigned to the event, (e.g. alt+d, etc.) 360c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Create a Char event manually from this key event and send it to the 361c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // renderer when this Char event contains a printable character which 362c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // should be processed by WebKit. 363c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // isSystemKey will be set to true if this key event has Alt modifier, 364c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // see WebInputEventFactory::keyboardEvent() for details. 365c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (wke->text[0]) { 366c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->type = WebKit::WebInputEvent::Char; 367c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->skip_in_browser = true; 368c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(*wke); 369c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 370c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 371c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 372c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessInputMethodResult(const GdkEventKey* event, 373c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool filtered) { 374c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch RenderWidgetHost* host = host_view_->GetRenderWidgetHost(); 375c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!host) 376c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 377c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 378c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool committed = false; 379c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We do commit before preedit change, so that we can optimize some 380c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // unnecessary preedit changes. 381c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (commit_text_.length()) { 382c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (filtered && NeedCommitByForwardingCharEvent()) { 383c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send a Char event when we input a composed character without IMEs 384c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // so that this event is to be dispatched to onkeypress() handlers, 385c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // autofill, etc. 386c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Only commit text generated by a filtered key down event can be sent 387c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // as a Char event, because a unfiltered key down event will probably 388c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // generate another Char event. 389c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // TODO(james.su@gmail.com): Is it necessary to support non BMP chars 390c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // here? 391c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent char_event(commit_text_[0], 392c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch event->state, 393c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch base::Time::Now().ToDoubleT()); 394c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char_event.skip_in_browser = true; 395c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(char_event); 396c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else { 397c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch committed = true; 398c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send an IME event. 399c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Unlike a Char event, an IME event is NOT dispatched to onkeypress() 400c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // handlers or autofill. 401c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host->ImeConfirmComposition(commit_text_); 402c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Set this flag to false, as this composition session has been 403c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // finished. 404c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = false; 405c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 406c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 407c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 408c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send preedit text only if it's changed. 409c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If a text has been committed, then we don't need to send the empty 410c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // preedit text again. 411c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_preedit_changed_) { 412c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (preedit_text_.length()) { 413c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Another composition session has been started. 414c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = true; 415c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host->ImeSetComposition(preedit_text_, preedit_underlines_, 416c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_start_, preedit_selection_end_); 417c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else if (!committed) { 418c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host->ImeCancelComposition(); 419c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 420c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 421c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 422c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 423c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ConfirmComposition() { 424c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_enabled_) 425c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 426c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 427c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(!is_in_key_event_handler_); 428c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 429c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_composing_text_) { 430c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (host_view_->GetRenderWidgetHost()) 431c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeConfirmComposition(); 432c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 433c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Reset the input method. 434c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch CancelComposition(); 435c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 436c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 437c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 438c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleCommit(const string16& text) { 4393345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick if (suppress_next_commit_) { 4403345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick suppress_next_commit_ = false; 4413345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick return; 4423345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick } 4433345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 444c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Append the text to the buffer, because commit signal might be fired 445c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // multiple times when processing a key event. 446c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch commit_text_.append(text); 447c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Nothing needs to do, if it's currently in ProcessKeyEvent() 448c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // handler, which will send commit text to webkit later. Otherwise, 449c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // we need send it here. 450c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It's possible that commit signal is fired without a key event, for 451c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // example when user input via a voice or handwriting recognition software. 452c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // In this case, the text must be committed directly. 453c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_in_key_event_handler_ && host_view_->GetRenderWidgetHost()) 454c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeConfirmComposition(text); 455c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 456c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 457c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditStart() { 458c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = true; 459c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 460c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 461c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditChanged(const gchar* text, 462c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrList* attrs, 463c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int cursor_position) { 4643345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick suppress_next_commit_ = false; 465c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Don't set is_preedit_changed_ to false if there is no change, because 466c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // this handler might be called multiple times with the same data. 467c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_preedit_changed_ = true; 468c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_.clear(); 469c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_underlines_.clear(); 470c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_start_ = 0; 471c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_end_ = 0; 472c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 473c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ExtractCompositionInfo(text, attrs, cursor_position, &preedit_text_, 474c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch &preedit_underlines_, &preedit_selection_start_, 475c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch &preedit_selection_end_); 476c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 477c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // In case we are using a buggy input method which doesn't fire 478c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // "preedit_start" signal. 479c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (preedit_text_.length()) 480c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = true; 481c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 482c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Nothing needs to do, if it's currently in ProcessKeyEvent() 483c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // handler, which will send preedit text to webkit later. 484c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Otherwise, we need send it here if it's been changed. 485c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_in_key_event_handler_ && host_view_->GetRenderWidgetHost()) { 486c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeSetComposition( 487c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_, preedit_underlines_, preedit_selection_start_, 488c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_end_); 489c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 490c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 491c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 492c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditEnd() { 493c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (preedit_text_.length()) { 494c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The composition session has been finished. 495c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_.clear(); 496c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_underlines_.clear(); 497c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_preedit_changed_ = true; 498c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 499c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If there is still a preedit text when firing "preedit-end" signal, 500c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // we need inform webkit to clear it. 501c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It's only necessary when it's not in ProcessKeyEvent (). 502c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_in_key_event_handler_ && host_view_->GetRenderWidgetHost()) 503c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeCancelComposition(); 504c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 505c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 506c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Don't set is_composing_text_ to false here, because "preedit_end" 507c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // signal may be fired before "commit" signal. 508c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 509c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 510c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewRealize(GtkWidget* widget) { 511c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We should only set im context's client window once, because when setting 512c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // client window.im context may destroy and recreate its internal states and 513c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // objects. 514c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (widget->window) { 515c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_, widget->window); 516c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_simple_, widget->window); 517c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 518c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 519c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 520c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewUnrealize() { 521c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_, NULL); 522c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_simple_, NULL); 523c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 524c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 525c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleCommitThunk( 526c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, gchar* text, GtkIMContextWrapper* self) { 527c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandleCommit(UTF8ToUTF16(text)); 528c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 529c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 530c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditStartThunk( 531c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, GtkIMContextWrapper* self) { 532c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandlePreeditStart(); 533c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 534c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 535c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditChangedThunk( 536c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, GtkIMContextWrapper* self) { 537c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gchar* text = NULL; 538c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrList* attrs = NULL; 539c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gint cursor_position = 0; 540c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_get_preedit_string(context, &text, &attrs, &cursor_position); 541c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandlePreeditChanged(text, attrs, cursor_position); 542c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_free(text); 543c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_list_unref(attrs); 544c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 545c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 546c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditEndThunk( 547c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, GtkIMContextWrapper* self) { 548c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandlePreeditEnd(); 549c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 550c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 551c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewRealizeThunk( 552c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* widget, GtkIMContextWrapper* self) { 553c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandleHostViewRealize(widget); 554c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 555c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 556c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewUnrealizeThunk( 557c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* widget, GtkIMContextWrapper* self) { 558c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandleHostViewUnrealize(); 559c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 560c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 561c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ExtractCompositionInfo( 562c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const gchar* utf8_text, 563c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrList* attrs, 564c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int cursor_position, 565c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch string16* utf16_text, 566c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::vector<WebKit::WebCompositionUnderline>* underlines, 567c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int* selection_start, 568c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int* selection_end) { 569c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch *utf16_text = UTF8ToUTF16(utf8_text); 570c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 571c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (utf16_text->empty()) 572c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 573c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 574c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Gtk/Pango uses character index for cursor position and byte index for 575c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // attribute range, but we use char16 offset for them. So we need to do 576c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // conversion here. 577c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::vector<int> char16_offsets; 578c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int length = static_cast<int>(utf16_text->length()); 579c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch for (int offset = 0; offset < length; ++offset) { 580c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets.push_back(offset); 581c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (CBU16_IS_SURROGATE((*utf16_text)[offset])) 582c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ++offset; 583c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 584c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 585c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The text length in Unicode characters. 586c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int char_length = static_cast<int>(char16_offsets.size()); 587c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Make sure we can convert the value of |char_length| as well. 588c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets.push_back(length); 589c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 590c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int cursor_offset = 591c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets[std::max(0, std::min(char_length, cursor_position))]; 592c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 593c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // TODO(suzhe): due to a bug of webkit, we currently can't use selection range 594c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // with composition string. See: https://bugs.webkit.org/show_bug.cgi?id=40805 595c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch *selection_start = *selection_end = cursor_offset; 596c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 597c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (attrs) { 598c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int utf8_length = strlen(utf8_text); 599c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrIterator* iter = pango_attr_list_get_iterator(attrs); 600c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 601c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We only care about underline and background attributes and convert 602c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // background attribute into selection if possible. 603c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch do { 604c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gint start, end; 605c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_range(iter, &start, &end); 606c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 607c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch start = std::min(start, utf8_length); 608c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch end = std::min(end, utf8_length); 609c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (start >= end) 610c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch continue; 611c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 612c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch start = g_utf8_pointer_to_offset(utf8_text, utf8_text + start); 613c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch end = g_utf8_pointer_to_offset(utf8_text, utf8_text + end); 614c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 615c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Double check, in case |utf8_text| is not a valid utf-8 string. 616c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch start = std::min(start, char_length); 617c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch end = std::min(end, char_length); 618c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (start >= end) 619c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch continue; 620c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 621c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttribute* background_attr = 622c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_get(iter, PANGO_ATTR_BACKGROUND); 623c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttribute* underline_attr = 624c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE); 625c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 626c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (background_attr || underline_attr) { 627c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Use a black thin underline by default. 628c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch WebKit::WebCompositionUnderline underline( 629c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets[start], char16_offsets[end], SK_ColorBLACK, false); 630c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 631c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Always use thick underline for a range with background color, which 632c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // is usually the selection range. 633c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (background_attr) 634c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underline.thick = true; 635c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (underline_attr) { 636c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int type = reinterpret_cast<PangoAttrInt*>(underline_attr)->value; 637c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (type == PANGO_UNDERLINE_DOUBLE) 638c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underline.thick = true; 639c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch else if (type == PANGO_UNDERLINE_ERROR) 640c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underline.color = SK_ColorRED; 641c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 642c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underlines->push_back(underline); 643c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 644c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } while (pango_attr_iterator_next(iter)); 645c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_destroy(iter); 646c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 647c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 648c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Use a black thin underline by default. 649c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (underlines->empty()) { 650c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underlines->push_back( 651c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch WebKit::WebCompositionUnderline(0, length, SK_ColorBLACK, false)); 652c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 653c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 654