134 lines
3 KiB
Java
134 lines
3 KiB
Java
/*
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Reversound is used to get the music sheet of a piece from a music file.
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Copyright (C) 2014 Gabriel AUGENDRE
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Copyright (C) 2014 Gabriel DIENY
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Copyright (C) 2014 Arthur GAUCHER
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Copyright (C) 2014 Gabriel LEPETIT-AIMON
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package gui.viewer_state;
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import processing.ProcessControl;
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/**
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* Created by gaby on 06/05/14.
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* Classe abstraite définissant les attributs communs au viewerState: relation avec les Graphics View
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*/
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public abstract class ViewerState {
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public enum State{
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UPDATE_NEEDED,
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UPDATED,
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CLEAN_NEEDED
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}
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private State state = State.CLEAN_NEEDED;
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final protected Viewer viewer;
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protected boolean visibility;
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private int slowingUpdate = 0;
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private int slowingFactorOnDataChange = 0;
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protected ViewerState(Viewer viewer) {
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this.viewer = viewer;
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visibility = false;
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}
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protected void init(){
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ProcessControl.instance().registerViewerState(this);
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setVisibility(false);
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}
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public void invalidate(){
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if(!canDraw())
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state = State.CLEAN_NEEDED;
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else
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state = State.UPDATE_NEEDED;
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}
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public void applyState(){
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if(slowingUpdate>0) {
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slowingUpdate--;
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return;
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}else if(slowingUpdate == -1)
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slowingUpdate = 0;
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if(state == State.UPDATED)
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return;
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State sCopy = state;
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state = State.UPDATED;
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if(sCopy == State.UPDATE_NEEDED)
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viewer.updateView();
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else if(sCopy== State.CLEAN_NEEDED)
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viewer.cleanView();
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}
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public boolean isVisible() {
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return visibility;
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}
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public void setVisibility(boolean visibility) {
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if(visibility==this.visibility)
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return;
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this.visibility = visibility;
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visibilityChanged();
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}
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public Viewer getViewer() {
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return viewer;
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}
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public State getState() {
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return state;
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}
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final public boolean setState(State state){
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return setState(state, 0);
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}
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final public boolean setState(State state, int slowFactor){
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if(slowFactor!=0){
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if(slowFactor==-1)
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slowingUpdate = -1;
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else if(slowingUpdate==0)
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slowingUpdate = slowFactor;
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}
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if(state == State.UPDATED)
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return this.state == State.UPDATED;
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this.state = state;
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return true;
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}
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public void forceState(State state){
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this.state = state;
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slowingUpdate = -1;
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}
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abstract protected boolean canDraw();
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protected void visibilityChanged(){
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}
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public int slowingFactorOnDataChange() {
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return slowingFactorOnDataChange;
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}
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public void setSlowingFactorOnDataChange(int slowingFactorOnDataChange) {
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this.slowingFactorOnDataChange = slowingFactorOnDataChange;
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}
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}
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