1 /* Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 * Use of this source code is governed by a BSD-style license that can be 3 * found in the LICENSE file. 4 */ 5 6 /** 7 * This file defines the <code>PPB_CursorControl_Dev</code> interface 8 * implemented by the browser for controlling the cursor. 9 */ 10 11 label Chrome { 12 M14 = 0.4 13 }; 14 15 [macro="PPB_CURSOR_CONTROL_DEV_INTERFACE"] 16 interface PPB_CursorControl_Dev { 17 /** 18 * Set a cursor. If "type" is PP_CURSORTYPE_CUSTOM, then "custom_image" 19 * must be an ImageData resource containing the cursor and "hot_spot" must 20 * contain the offset within that image that refers to the cursor's position. 21 */ 22 PP_Bool SetCursor([in] PP_Instance instance, 23 [in] PP_CursorType_Dev type, 24 [in] PP_Resource custom_image, 25 [in] PP_Point hot_spot); 26 27 /** 28 * This method causes the cursor to be moved to the center of the 29 * instance and be locked, preventing the user from moving it. 30 * The cursor is implicitly hidden from the user while locked. 31 * Cursor lock may only be requested in response to a 32 * PP_InputEvent_MouseDown, and then only if the event was generated via 33 * user gesture. 34 * 35 * While the cursor is locked, any movement of the mouse will 36 * generate a PP_InputEvent_Type_MouseMove, whose x and y values 37 * indicate the position the cursor would have been moved to had 38 * the cursor not been locked, and had the screen been infinite in size. 39 * 40 * The browser may revoke cursor lock for reasons including but not 41 * limited to the user pressing the ESC key, the user activating 42 * another program via a reserved keystroke (e.g., ALT+TAB), or 43 * some other system event. 44 * 45 * Returns PP_TRUE if the cursor could be locked, PP_FALSE otherwise. 46 */ 47 PP_Bool LockCursor([in] PP_Instance instance); 48 49 /** 50 * Causes the cursor to be unlocked, allowing it to track user 51 * movement again. 52 */ 53 PP_Bool UnlockCursor([in] PP_Instance instance); 54 55 /** 56 * Returns PP_TRUE if the cursor is locked, PP_FALSE otherwise. 57 */ 58 PP_Bool HasCursorLock([in] PP_Instance instance); 59 60 /** 61 * Returns PP_TRUE if the cursor can be locked, PP_FALSE otherwise. 62 */ 63 PP_Bool CanLockCursor([in] PP_Instance instance); 64 }; 65 66
