15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "ash/ash_export.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/compiler_specific.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/point.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/rect.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace aura { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class RootWindow; 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace ash { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)class ASH_EXPORT MagnificationController { 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) enum ScrollDirection { 245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) SCROLL_NONE, 255d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) SCROLL_LEFT, 265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) SCROLL_RIGHT, 275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) SCROLL_UP, 285d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) SCROLL_DOWN 295d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) }; 305d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~MagnificationController() {} 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Creates a new MagnificationController. The caller takes ownership of the 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // returned object. 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static MagnificationController* CreateInstance(); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Enables (or disables if |enabled| is false) screen magnifier feature. 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void SetEnabled(bool enabled) = 0; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Returns if the screen magnifier is enabled or not. 412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual bool IsEnabled() const = 0; 422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Sets the magnification ratio. 1.0f means no magnification. 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void SetScale(float scale, bool animate) = 0; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the current magnification ratio. 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual float GetScale() const = 0; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Set the top-left point of the magnification window. 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void MoveWindow(int x, int y, bool animate) = 0; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void MoveWindow(const gfx::Point& point, bool animate) = 0; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the current top-left point of the magnification window. 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual gfx::Point GetWindowPosition() const = 0; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual void SetScrollDirection(ScrollDirection direction) = 0; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 56c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Returns |point_of_interest_| in MagnificationControllerImpl. This is 57c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // the internal variable to stores the last mouse cursor (or last touched) 58c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // location. This method is only for test purpose. 59c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) virtual gfx::Point GetPointOfInterestForTesting() = 0; 60c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MagnificationController() {} 635d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 645d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) private: 655d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(MagnificationController); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace ash 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // ASH_MAGNIFIER_MAGNIFICATION_CONTROLLER_H_ 71