Initial browser-side implementation for touch-action

content/common/view_messages.h

 // Copyright (c) 2012 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.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/memory/shared_memory.h"
 #include "base/process/process.h"
 #include "base/strings/string16.h"
@@ skipping 15 matching lines @@
 #include "content/public/common/file_chooser_params.h"
 #include "content/public/common/frame_navigate_params.h"
 #include "content/public/common/javascript_message_type.h"
 #include "content/public/common/menu_item.h"
 #include "content/public/common/page_state.h"
 #include "content/public/common/page_zoom.h"
 #include "content/public/common/referrer.h"
 #include "content/public/common/renderer_preferences.h"
 #include "content/public/common/stop_find_action.h"
 #include "content/public/common/three_d_api_types.h"
+#include "content/public/common/touch_action.h"
 #include "content/public/common/window_container_type.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_platform_file.h"
 #include "media/audio/audio_parameters.h"
 #include "media/base/channel_layout.h"
 #include "media/base/media_log_event.h"
 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
 #include "third_party/WebKit/public/platform/WebFloatRect.h"
 #include "third_party/WebKit/public/web/WebCompositionUnderline.h"
@@ skipping 37 matching lines @@
 IPC_ENUM_TRAITS(content::JavaScriptMessageType)
 IPC_ENUM_TRAITS(content::MenuItem::Type)
 IPC_ENUM_TRAITS(content::NavigationGesture)
 IPC_ENUM_TRAITS(content::PageZoom)
 IPC_ENUM_TRAITS(content::RendererPreferencesHintingEnum)
 IPC_ENUM_TRAITS(content::RendererPreferencesSubpixelRenderingEnum)
 IPC_ENUM_TRAITS_MAX_VALUE(content::TapMultipleTargetsStrategy,
                           content::TAP_MULTIPLE_TARGETS_STRATEGY_MAX)
 IPC_ENUM_TRAITS(content::StopFindAction)
 IPC_ENUM_TRAITS(content::ThreeDAPIType)
+IPC_ENUM_TRAITS(content::TouchAction)
 IPC_ENUM_TRAITS(media::ChannelLayout)
 IPC_ENUM_TRAITS(media::MediaLogEvent::Type)
 IPC_ENUM_TRAITS(ui::MenuSourceType)
 IPC_ENUM_TRAITS_MAX_VALUE(ui::TextInputMode, ui::TEXT_INPUT_MODE_MAX)
 IPC_ENUM_TRAITS(ui::TextInputType)
 
 #if defined(OS_MACOSX)
 IPC_STRUCT_TRAITS_BEGIN(FontDescriptor)
   IPC_STRUCT_TRAITS_MEMBER(font_name)
   IPC_STRUCT_TRAITS_MEMBER(font_point_size)
@@ skipping 1749 matching lines @@
                     bool /* has_vertical_scrollbar */)
 
 // Notifies that the number of JavaScript scroll handlers changed.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_DidChangeNumWheelEvents,
                     int /* count */)
 
 // Notifies whether there are JavaScript touch event handlers or not.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_HasTouchEventHandlers,
                     bool /* has_handlers */)
 
+// Notifies the allowed touch actions for a new touch point.
+IPC_MESSAGE_ROUTED2(ViewHostMsg_SetTouchAction,

[jdduke (slow), 2013/11/18 15:56:00]

Could we make this an InputHostMsg and put in
content/common/input/input_messages.h?

[Rick Byers, 2013/11/19 22:14:59]

Done.  I saw this as similar to ViewHostMsg_HasTouchEventHandlers - wasn't sure
why that was a ViewHostMsg.  I could move it here too if you like.

[jdduke (slow), 2013/11/20 00:35:23]

Ah, you're right of course.  I've been meaning to change that, but as long as we
already handle ViewHostMsg types in the router I'm fine with either ViewHost or
InputHost prefixes.

+                    int /* touch_id */,
+                    content::TouchAction /* touch_actions */)
+
 // A message from HTML-based UI.  When (trusted) Javascript calls
 // send(message, args), this message is sent to the browser.
 IPC_MESSAGE_ROUTED3(ViewHostMsg_WebUISend,
                     GURL /* source_url */,
                     std::string  /* message */,
                     base::ListValue /* args */)
 
 // A renderer sends this to the browser process when it wants to create a ppapi
 // plugin.  The browser will create the plugin process if necessary, and will
 // return a handle to the channel on success.
@@ skipping 493 matching lines @@
 // synchronously (see crbug.com/120597). This IPC message sends the character
 // bounds after every composition change to always have correct bound info.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_ImeCompositionRangeChanged,
                     gfx::Range /* composition range */,
                     std::vector<gfx::Rect> /* character bounds */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.