| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| #ifndef SD_SLIDESORTER_VISIBLE_AREA_MANAGER_HXX |
| #define SD_SLIDESORTER_VISIBLE_AREA_MANAGER_HXX |
| |
| #include "controller/SlsAnimator.hxx" |
| #include "model/SlsSharedPageDescriptor.hxx" |
| #include <boost/noncopyable.hpp> |
| #include <boost/optional.hpp> |
| |
| namespace sd { namespace slidesorter { namespace controller { |
| |
| |
| /** Manage requests for scrolling page objects into view. |
| */ |
| class VisibleAreaManager |
| : public ::boost::noncopyable |
| { |
| public: |
| VisibleAreaManager (SlideSorter& rSlideSorter); |
| ~VisibleAreaManager (void); |
| |
| void ActivateCurrentSlideTracking (void); |
| void DeactivateCurrentSlideTracking (void); |
| bool IsCurrentSlideTrackingActive (void) const; |
| |
| /** Request the current slide to be moved into the visible area. |
| This request is only obeyed when the current slide tracking is |
| active. |
| @see ActivateCurrentSlideTracking() and DeactivateCurrentSlideTracking() |
| */ |
| void RequestCurrentSlideVisible (void); |
| |
| /** Request to make the specified page object visible. |
| */ |
| void RequestVisible ( |
| const model::SharedPageDescriptor& rpDescriptor, |
| const bool bForce = false); |
| |
| /** Temporarily disable the update of the visible area. |
| */ |
| class TemporaryDisabler |
| { |
| public: |
| TemporaryDisabler (SlideSorter& rSlideSorter); |
| ~TemporaryDisabler (void); |
| private: |
| VisibleAreaManager& mrVisibleAreaManager; |
| }; |
| |
| private: |
| SlideSorter& mrSlideSorter; |
| |
| /** List of rectangle that someone wants to be moved into the visible |
| area. |
| Cleared on every call to ForgetVisibleRequests() and MakeVisible(). |
| */ |
| ::std::vector<Rectangle> maVisibleRequests; |
| |
| /** Animation id for a scroll animation that sets the top |
| and left of the visible area to maRequestedVisibleTopLeft. |
| */ |
| Animator::AnimationId mnScrollAnimationId; |
| Point maRequestedVisibleTopLeft; |
| Animator::AnimationMode meRequestedAnimationMode; |
| bool mbIsCurrentSlideTrackingActive; |
| int mnDisableCount; |
| |
| void MakeVisible (void); |
| ::boost::optional<Point> GetRequestedTopLeft (void) const; |
| }; |
| |
| |
| } } } // end of namespace ::sd::slidesorter::view |
| |
| #endif |