iOS Chromoting Client

remoting/ios/ui/host_view_controller.h

+// Copyright 2014 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.
+
+#ifndef REMOTING_IOS_UI_HOST_VIEW_CONTROLLER_H_
+#define REMOTING_IOS_UI_HOST_VIEW_CONTROLLER_H_
+
+#import <GLKit/GLKit.h>
+
+#import "GTMOAuth2Authentication.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "third_party/webrtc/modules/desktop_capture/mouse_cursor.h"
+
+#import "remoting/ios/host.h"
+#import "remoting/ios/key_input.h"
+#import "remoting/ios/utility.h"
+#import "remoting/ios/bridge/client_controller.h"
+#import "remoting/ios/ui/pin_entry_view_controller.h"
+
+@interface HostViewController
+    : GLKViewController<PinEntryViewControllerDelegate,
+                        KeyInputDelegate,
+                        ClientControllerDelegate,
+                        UIGestureRecognizerDelegate,
+                        UIToolbarDelegate> {
+ @private
+  IBOutlet UIActivityIndicatorView* _busyIndicator;
+  IBOutlet UIBarButtonItem* _bbiHostAndStatus;
+  IBOutlet UIButton* _barBtnKeyboard;
+  IBOutlet UIButton* _barBtnNavigation;
+  IBOutlet UIButton* _barBtnMiddleMouse;
+  IBOutlet UIButton* _barBtnRightMouse;
+  IBOutlet UILongPressGestureRecognizer* _longPressRecognizer;
+  IBOutlet UIPanGestureRecognizer* _panRecognizer;
+  IBOutlet UIPanGestureRecognizer* _threeFingerPanRecognizer;
+  IBOutlet UIPinchGestureRecognizer* _pinchRecognizer;
+  IBOutlet UITapGestureRecognizer* _singleTapRecognizer;
+  IBOutlet UITapGestureRecognizer* _twoFingerTapRecognizer;
+  IBOutlet UITapGestureRecognizer* _threeFingerTapRecognizer;
+  IBOutlet UIToolbar* _viewToolbar;
+  IBOutlet UIToolbar* _viewHiddenToolbar;
+
+  KeyInput* _keyEntryView;
+  NSTimer* _updateDisplayTimer;
+
+  // The GLES2 context being drawn too.
+  EAGLContext* _context;
+
+  // The draw surface is a triangle strip (triangles defined by the intersecting
+  // vertexs) to create a rectangle surface.
+  // 1****3
+  // |  / |
+  // | /  |
+  // 2****4
+  // This also determines the resolution of our surface, being a unit (NxN) grid
+  // with finite divisions.  For our surface N = 1, and the number of divisions
+  // respects the CLIENT's desktop resolution.
+  TexturedQuad _quad;
+  // The draw surface consists of two layers (GL Textures). The bottom layer is
+  // the desktop of the HOST.  The top layer is mostly transparent and is used
+  // to overlay the current cursor.
+  GLuint _textureIds[2];
+
+  // GLKBaseEffect encapsulates the GL Shaders needed to draw at most two
+  // textures |_textureIds| given vectex information |_quad|.  As well as
+  // the textures positions and lighting.
+  GLKBaseEffect* _effect;
+  // The possition of the scene is tracked in the prospective of the CLIENT
+  // resolution.  The Z-axis is used to track the scale of the render, our scene
+  // never changes position on the Z-axis.
+  GLKVector3 _scenePosition;
+
+  // List of regions and data that have pending draws to a GL Texture
+  ScopedVector<GLRegion> _glRegions;
+  // Lock for |_glRegions|, regions are delivered from HOST on a network thread,
+  // and drawn to a GL Texture from a GL Context thread
+  NSLock* _glBufferLock;
+
+  // The current cursor
+  scoped_ptr<webrtc::MouseCursor> _cursor;
+  BOOL _needCursorRedraw;
+
+  // Lock for |_cursor|, cursor updates are delivered from HOST on a network
+  // thread, and drawn to a GL Texture from a GL Context thread
+  NSLock* _glCursorLock;
+  // Rectangle of the most recent cursor drawn to a GL Texture.  On each
+  // successive frame when a new cursor is available this region is cleared on
+  // the GL Texture, so that the GL Texture is completely transparent again, and
+  // the cursor is then redrawn.
+  webrtc::DesktopRect _cursorDrawnToGL;
+
+  // Location of the mouse according to the CLIENT in the prospective of the
+  // HOST resolution
+  webrtc::DesktopVector _mousePosition;
+
+  BOOL _isAnchorRight;
+  BOOL _isAnchorLeft;
+  BOOL _isAnchorTop;
+  BOOL _isAnchorBottom;
+
+  // Descendent controller for the user to enter their PIN for the selected host
+  PinEntryViewController* _pinEntry;
+
+  // Communication channel from CLIENT to HOST
+  ClientController* _controller;
+
+  // Jabber supplied Details for the host being viewed
+  Host* _host;
+  // Authorization agent for the host being viewed
+  GTMOAuth2Authentication* _authorization;
+
+  // Cache of the CLIENT's desktop resolution.
+  webrtc::DesktopSize _contentSize;
+  // Cache of the HOST's desktop resolution.
+  webrtc::DesktopSize _frameSize;
+
+  // Indicates that the |_frameSize| has changed, when this happens
+  // |_textureIds| must be re initilized at the new size.
+  BOOL _sizeChanged;
+
+  // You can not change the size of a toolbar, so we rely on the value being
+  // wellknown.  When |_viewToolbar| is hidden change this value to zero, when
+  // its shown the value is 40
+  int _toolbarHeight;
+
+  // When a user pans they expect the view to experience accelleration after
+  // they release the pan gesture.  We track that velocity vecter as a position
+  // delta factored over the frame rate of the GL Context.  Velocity is
+  // accounted as a float.
+  CGPoint _panVelocity;
+}
+
+- (void)setHostDetails:(Host*)host
+         authorization:(GTMOAuth2Authentication*)authorization;
+
+// Zoom in/out
+- (IBAction)pinchGestureTriggered:(UIPinchGestureRecognizer*)sender;
+// Left mouse click, moves cursor
+- (IBAction)tapGestureTriggered:(UITapGestureRecognizer*)sender;
+// Scroll the view in 2d
+- (IBAction)panGestureTriggered:(UIPanGestureRecognizer*)sender;
+// Right mouse click and drag, moves cursor
+- (IBAction)longPressGestureTriggered:(UILongPressGestureRecognizer*)sender;
+// Right mouse click
+- (IBAction)twoFingerTapGestureTriggered:(UITapGestureRecognizer*)sender;
+// Middle mouse click
+- (IBAction)threeFingerTapGestureTriggered:(UITapGestureRecognizer*)sender;
+// Show hidden menus.  Swipe up for keyboard, swipe down for navigation menu
+- (IBAction)threeFingerPanGestureTriggered:(UIPanGestureRecognizer*)sender;
+
+// Do navigation 'back'
+- (IBAction)barBtnNavigationBackPressed:(id)sender;
+// Show keyboard
+- (IBAction)barBtnKeyboardPressed:(id)sender;
+// Toggle Toolbar's hidden state
+- (IBAction)barBtnToolBarHidePressed:(id)sender;
+
+@end
+
+#endif  // REMOTING_IOS_UI_HOST_VIEW_CONTROLLER_H_