Add new MouseCursor interface for setting the mouse cursor.

ppapi/api/ppb_mouse_cursor.idl

+/* 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.
+ */
+
+/**
+ * This file defines the <code>PPB_MouseCursor</code> interface for setting
+ * the mouse cursor.
+ */
+
+label Chrome {
+  M19 = 1.0
+};
+
+/**
+ * The <code>PP_MouseCursor_Type</code> enumeration lists the available stock
+ * cursor types.
+ */
+[assert_size(4), notypedef]
+enum PP_MouseCursor_Type {
+  PP_MOUSECURSOR_TYPE_CUSTOM = -1,
+  PP_MOUSECURSOR_TYPE_POINTER = 0,
+  PP_MOUSECURSOR_TYPE_CROSS = 1,
+  PP_MOUSECURSOR_TYPE_HAND = 2,
+  PP_MOUSECURSOR_TYPE_IBEAM = 3,
+  PP_MOUSECURSOR_TYPE_WAIT = 4,
+  PP_MOUSECURSOR_TYPE_HELP = 5,
+  PP_MOUSECURSOR_TYPE_EASTRESIZE = 6,
+  PP_MOUSECURSOR_TYPE_NORTHRESIZE = 7,
+  PP_MOUSECURSOR_TYPE_NORTHEASTRESIZE = 8,
+  PP_MOUSECURSOR_TYPE_NORTHWESTRESIZE = 9,
+  PP_MOUSECURSOR_TYPE_SOUTHRESIZE = 10,
+  PP_MOUSECURSOR_TYPE_SOUTHEASTRESIZE = 11,
+  PP_MOUSECURSOR_TYPE_SOUTHWESTRESIZE = 12,
+  PP_MOUSECURSOR_TYPE_WESTRESIZE = 13,
+  PP_MOUSECURSOR_TYPE_NORTHSOUTHRESIZE = 14,
+  PP_MOUSECURSOR_TYPE_EASTWESTRESIZE = 15,
+  PP_MOUSECURSOR_TYPE_NORTHEASTSOUTHWESTRESIZE = 16,
+  PP_MOUSECURSOR_TYPE_NORTHWESTSOUTHEASTRESIZE = 17,
+  PP_MOUSECURSOR_TYPE_COLUMNRESIZE = 18,
+  PP_MOUSECURSOR_TYPE_ROWRESIZE = 19,
+  PP_MOUSECURSOR_TYPE_MIDDLEPANNING = 20,
+  PP_MOUSECURSOR_TYPE_EASTPANNING = 21,
+  PP_MOUSECURSOR_TYPE_NORTHPANNING = 22,
+  PP_MOUSECURSOR_TYPE_NORTHEASTPANNING = 23,
+  PP_MOUSECURSOR_TYPE_NORTHWESTPANNING = 24,
+  PP_MOUSECURSOR_TYPE_SOUTHPANNING = 25,
+  PP_MOUSECURSOR_TYPE_SOUTHEASTPANNING = 26,
+  PP_MOUSECURSOR_TYPE_SOUTHWESTPANNING = 27,
+  PP_MOUSECURSOR_TYPE_WESTPANNING = 28,
+  PP_MOUSECURSOR_TYPE_MOVE = 29,
+  PP_MOUSECURSOR_TYPE_VERTICALTEXT = 30,
+  PP_MOUSECURSOR_TYPE_CELL = 31,
+  PP_MOUSECURSOR_TYPE_CONTEXTMENU = 32,
+  PP_MOUSECURSOR_TYPE_ALIAS = 33,
+  PP_MOUSECURSOR_TYPE_PROGRESS = 34,
+  PP_MOUSECURSOR_TYPE_NODROP = 35,
+  PP_MOUSECURSOR_TYPE_COPY = 36,
+  PP_MOUSECURSOR_TYPE_NONE = 37,
+  PP_MOUSECURSOR_TYPE_NOTALLOWED = 38,
+  PP_MOUSECURSOR_TYPE_ZOOMIN = 39,
+  PP_MOUSECURSOR_TYPE_ZOOMOUT = 40,
+  PP_MOUSECURSOR_TYPE_GRAB = 41,
+  PP_MOUSECURSOR_TYPE_GRABBING = 42
+};
+
+/**
+ * The <code>PPB_MouseCursor</code> allows setting the mouse cursor.
+ */
+interface PPB_MouseCursor {
+  /**
+   * Sets the given mouse cursor. The mouse cursor will be in effect whenever
+   * the mouse is over the given instance until it is set again by another
+   * call. Note that you can hide the mouse cursor by setting it to the
+   * <code>PP_MOUSECURSOR_TYPE_NONE</code> type.
+   *
+   * This function allows setting both system defined mouse cursors and
+   * custom cursors. To set a system-defined cursor, pass the type you want
+   * and set the custom image to 0 and the hot spot to NULL. To set a custom
+   * cursor, set the type to <code>PP_MOUSECURSOR_TYPE_CUSTOM</code> and
+   * specify your image and hot spot.
+   *
+   * @param[in] instance A <code>PP_Instance</code> indentifying the instance
+   * that the mouse cursor will affect.
+   *
+   * @param[in] type A <code>PP_MouseCursor_Type</code> identifying the type of
+   * mouse cursor to show.
+   *
+   * @param[in] image A <code>PPB_ImageData</code> resource identifying the
+   * custom image to set when the type is
+   * <code>PP_MOUSECURSOR_TYPE_CUSTOM</code>. The image must be less than 32
+   * pixels in each direction and must be of the system's native image format.
+   * When you are specifying a predefined cursor, this parameter must be 0.
+   *
+   * @param[in] hot_spot When setting a custom cursor, this idenfifies the
+   * pixel position within the given image of the "hot spot" of the cursor.
+   * When specifying a stock cursor, this parameter is ignored.
+   *
+   * @return PP_TRUE on success, or PP_FALSE if the instance or cursor type
+   * is invalid, or if the image is too large.
+   */
+  PP_Bool SetCursor([in] PP_Instance instance,
+                    [in] PP_MouseCursor_Type type,
+                    [in] PP_Resource image,
+                    [in] PP_Point hot_spot);
+};