Change WorkSpace PageScroll Effect

These effects are taken out of the CM, the code that needs to be modified, add some code to the Workspace.java. To modify a step:

Define several variables and constants:

    /*****************************tangxuankai Add start**************************/protected TransitionEffect   Mtransitioneffect;     Protected Boolean            Musetransitioneffect       = true;    Private   boolean            mscrolltransformsset;          Protected static final Float transition_screen_rotation = 35f;protected static float       camera_distance            = 6500; Protected static final float Transition_scale_factor    = 0.5f;/*****************************tangxuankai Add end*** ***********************/

In the Screenscrolled function, add:

protected void screenscrolled (int screencenter) {..../************tangxuankai add to change scroll animation start****, ..... TODO Change Screenscroll Animation Boolean isinoverscroll = false; Moverscrollx < 0 | | MOVERSCROLLX > mmaxscrollx;////Apply transition effect and adjacent screen fade if enabled//sharedpreferen Ces sp = GetContext (). Getsharedpreferences (//"Com.android.launcher3.prefs", context.mode_private); int Screeneffectnum = 4;//sp.getint ("Screeneffect", 0); for (int i = 0; i < Getchildcount (); i++) {View v = getpageat (i); if (v! = null) {Float scrollprogress = getscrollprogress (Screencenter, V, i); switch (screeneffectnum) {case 0:changescreeneffect ( Isinoverscroll, I, V, scrollprogress, "none"), Break;case 1:changescreeneffect (Isinoverscroll, I, V, scrollprogress, " Cube-out "); break;case 2:changescreeneffect (Isinoverscroll, I, V, scrollprogress," zoom-in "); Break;case 3: Changescreeneffect (Isinoverscroll, I, V, scrollprogress, "stack"); BreAk;case 4:changescreeneffect (Isinoverscroll, I, V, scrollprogress, "Flip"); Break;case 5:changescreeneffect ( Isinoverscroll, I, V, scrollprogress, "cylinder-in"); break;case 6:changescreeneffect (Isinoverscroll, I, V, Scrollprogress, "Rotate-down"); break;case 7:changescreeneffect (Isinoverscroll, I, V, scrollprogress, "accordion"); Break;default:break;}}} /************tangxuankai Add to change scroll animation end*************************/}

Then add in the code:

private void Changescreeneffect (Boolean isinoverscroll, int i, View v,float scrollprogress,string effect) { Transitioneffect.setfromstring (this, effect); if (mtransitioneffect! = null && musetransitioneffect && !isinoverscroll) {mtransitioneffect.screenscrolled (V, I, scrollprogress);} else if (mscrolltransformsset) {V.setPi    Votx (V.getmeasuredwidth () * 0.5f);    V.setpivoty (V.getmeasuredheight () * 0.5f);    V.setrotation (0);    V.setrotationx (0);    V.setrotationy (0);    V.setscalex (1f);    V.setscaley (1f);    V.settranslationx (0f);    V.settranslationy (0f);    V.setvisibility (VISIBLE);    Setchildalpha (v, 1f); V.setalpha (1.0f);}}    public Boolean Islayoutrtl () {return Utilities.isrtl (mlauncher.getresources ());}    Public TransitionEffect Gettransitioneffect () {return mtransitioneffect;        }public void Settransitioneffect (TransitionEffect effect) {mtransitioneffect = effect;         Reset Scroll transforms if (mscrolltransformsset) {   for (int i = 0; i < Getchildcount (); i++) {View v = getpageat (i);                    if (v! = null) {V.setpivotx (V.getmeasuredwidth () * 0.5f);                    V.setpivoty (V.getmeasuredheight () * 0.5f);                    V.setrotation (0);                    V.setrotationx (0);                    V.setrotationy (0);                    V.setscalex (1f);                    V.setscaley (1f);                    V.settranslationx (0f);                    V.settranslationy (0f);                    V.setvisibility (VISIBLE);                Setchildalpha (v, 1f);        }} Mscrolltransformsset = false;    }}protected void Setchildalpha (View child, float Alpha) {Child.setalpha (alpha);        }protected static abstract class TransitionEffect {public static final String Transition_effect_none = "NONE";        public static final String transition_effect_zoom_in = "zoom-in"; public static final String TRANsition_effect_zoom_out = "Zoom-out";        public static final String transition_effect_rotate_up = "rotate-up";        public static final String Transition_effect_rotate_down = "Rotate-down";        public static final String transition_effect_cube_in = "cube-in";        public static final String transition_effect_cube_out = "Cube-out";        public static final String transition_effect_stack = "STACK";        public static final String transition_effect_accordion = "ACCORDION";        public static final String transition_effect_flip = "FLIP";        public static final String transition_effect_cylinder_in = "cylinder-in";        public static final String transition_effect_cylinder_out = "Cylinder-out";        public static final String Transition_effect_crossfade = "Crossfade";        public static final String Transition_effect_overview = "Overview";        Protected final Workspace Mworkspace;        Private final String Mname; Public TransitionEffect (Workspace WORKSPAce, String name) {mworkspace = workspace;        Mname = name;        } public abstract void screenscrolled (View v, int i, float scrollprogress);        Public final String GetName () {return mname; } public static void Setfromstring (Workspace Workspace, String effect) {if (Effect.equals (workspace.tr            Ansitioneffect.transition_effect_none)) {workspace.settransitioneffect (null); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_ZOOM_IN)) {WORKSPACE.SETTRANSITIONEF            Fect (New Workspace.TransitionEffect.Zoom (Workspace, true)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_ZOOM_OUT)) {Workspace.settransitione            Ffect (New Workspace.TransitionEffect.Zoom (Workspace, false)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_CUBE_IN)) {WORKSPACE.SETTRANSITIONEF Fect (New Workspace.traNsitioneffect.cube (workspace, true)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_CUBE_OUT)) {Workspace.settransitione            Ffect (New Workspace.TransitionEffect.Cube (Workspace, false)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_ROTATE_UP)) {workspace.settransition            Effect (New Workspace.TransitionEffect.Rotate (Workspace, true)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_ROTATE_DOWN)) {Workspace.settransiti            Oneffect (New Workspace.TransitionEffect.Rotate (Workspace, false)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_STACK)) {Workspace.settransitioneffe            CT (new Workspace.TransitionEffect.Stack (Workspace)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_ACCORDION)) {workspace.settransition Effect (New Workspace.TransitionEffect.Accordion (WORKspace)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_FLIP)) {WORKSPACE.SETTRANSITIONEFFEC            T (new Workspace.TransitionEffect.Flip (Workspace)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_CYLINDER_IN)) {Workspace.settransiti            Oneffect (New Workspace.TransitionEffect.Cylinder (Workspace, true)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_CYLINDER_OUT)) {Workspace.settransit            Ioneffect (New Workspace.TransitionEffect.Cylinder (Workspace, false)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_CROSSFADE)) {workspace.settransition            Effect (New Workspace.TransitionEffect.Crossfade (Workspace)); } else if (Effect.equals (Workspace.TransitionEffect.TRANSITION_EFFECT_OVERVIEW)) {Workspace.settransitione            Ffect (New Workspace.TransitionEffect.Overview (Workspace));    }    } public static class Zoom extends TransitionEffect {private Boolean mIn; Public Zoom (Workspace Workspace, Boolean in) {Super (Workspace, in?)                Transition_effect_zoom_in:transition_effect_zoom_out);            MIn = in; } @Override public void screenscrolled (View v, int i, float scrollprogress) {float s                Cale = 1.0f + (mIn. -0.8f:0.4f) * Math.Abs (scrollprogress); Extra translation to account for the increase in size if (!min) {float Translationx                    = V.getmeasuredwidth () * 0.1f *-scrollprogress;                V.settranslationx (Translationx);                } v.setscalex (scale);            V.setscaley (scale);            }} public static class Rotate extends TransitionEffect {private Boolean mUp; Public Rotate (Workspace Pagedview, Boolean up) {super (Pagedview, up?                Transition_effect_rotate_up:transition_effect_rotate_down);            MUp = up; } @Override public void screenscrolled (View v, int i, float scrollprogress) {float R Otation = (mUp?                Transition_screen_rotation:-transition_screen_rotation) * scrollprogress;                float Translationx = v.getmeasuredwidth () * scrollprogress; float Rotatepoint = (v.getmeasuredwidth () * 0.5f)/(float) Math.tan                (Math.toradians (double) (transition_screen_rotation * 0.5f));                V.setpivotx (V.getmeasuredwidth () * 0.5f);                if (mUp) {v.setpivoty (-rotatepoint);                } else {V.setpivoty (v.getmeasuredheight () + rotatepoint);                } v.setrotation (rotation);            V.settranslationx (Translationx); }} public static class CubeExtends TransitionEffect {private Boolean mIn; Public Cube (Workspace Workspace, Boolean in) {Super (Workspace, in?)                Transition_effect_cube_in:transition_effect_cube_out);            MIn = in; } @Override public void screenscrolled (View v, int i, float scrollprogress) {float R                Otation = (mIn. 90.0f: -90.0f) * scrollprogress;                V.setpivotx (scrollprogress < 0 0:v.getmeasuredwidth ());                V.setpivoty (V.getmeasuredheight () * 0.5f);            V.setrotationy (rotation); }} public static class Stack extends TransitionEffect {private Zinterpolator Mzinterpolator = n            EW Zinterpolator (0.5f);            Private Decelerateinterpolator Mleftscreenalphainterpolator = new Decelerateinterpolator (4);            protected Accelerateinterpolator malphainterpolator = new Accelerateinterpolator (0.9f); Public Stack (Workspace Workspace) {Super (workspace, transition_effect_stack);                            } @Override public void screenscrolled (View v, int i, float scrollprogress) {                Final Boolean Isrtl = Mworkspace.islayoutrtl ();                float interpolatedprogress;                float Translationx;                float maxscrollprogress = Math.max (0, scrollprogress);                float minscrollprogress = math.min (0, scrollprogress);                    if (Mworkspace.islayoutrtl ()) {Translationx = maxscrollprogress * V.getmeasuredwidth ();                interpolatedprogress = Mzinterpolator.getinterpolation (Math.Abs (maxscrollprogress));                    } else {Translationx = minscrollprogress * V.getmeasuredwidth ();                interpolatedprogress = Mzinterpolator.getinterpolation (Math.Abs (minscrollprogress)); } Float scale = (1-interpolatedprogress) + InterPolatedprogress * Transition_scale_factor;                float Alpha; if (Isrtl && (scrollprogress > 0)) {alpha = Malphainterpolator.getinterpolation (1-math.ab                S (maxscrollprogress));  } else if (!isrtl && (scrollprogress < 0)) {alpha = malphainterpolator.getinterpolation (1-                Math.Abs (scrollprogress));                    } else {//on large screens we need to fade the page as it nears its leftmost position                Alpha = mleftscreenalphainterpolator.getinterpolation (1-scrollprogress);                } v.settranslationx (Translationx);                V.setscalex (scale);                V.setscaley (scale);                if (v instanceof celllayout) {((celllayout) v). Getshortcutsandwidgets (). Setalpha (Alpha);                } else {V.setalpha (alpha); }//If The view has 0 alpha, we set It to is invisible so as to prevent//it from accepting touches if (alpha = = 0) {                V.setvisibility (INVISIBLE);                } else if (v.getvisibility ()! = visible) {v.setvisibility (visible); }}} public static class Accordion extends TransitionEffect {public Accordion (WORKSP            Ace Workspace) {Super (workspace, transition_effect_accordion); } @Override public void screenscrolled (View v, int i, float scrollprogress) {float s                Cale = 1.0f-math.abs (scrollprogress);                V.setscalex (scale);                V.setpivotx (scrollprogress < 0 0:v.getmeasuredwidth ());            V.setpivoty (V.getmeasuredheight ()/2f);                }} public static class Flip extends TransitionEffect {public Flip (Workspace Workspace) { Super (workspace, Transition_effect_fLIP); } @Override public void screenscrolled (View v, int i, float scrollprogress) {float R                otation = -180.0f * Math.max ( -1f, Math.min (1f, scrollprogress));                V.setcameradistance (mworkspace.mdensity * workspace.camera_distance);                V.setpivotx (V.getmeasuredwidth () * 0.5f);                V.setpivoty (V.getmeasuredheight () * 0.5f);                V.setrotationy (rotation); if (scrollprogress >= -0.5f && scrollprogress <= 0.5f) {V.settranslationx (V.getmeasuredw                Idth () * scrollprogress);                } else {V.settranslationx (0f);            }}} public static class Cylinder extends TransitionEffect {private Boolean mIn; Public Cylinder (Workspace Workspace, Booleans) {super (Workspace, in?)                Transition_effect_cylinder_in:transition_effect_cylinder_out);    MIn = in;        } @Override public void screenscrolled (View v, int i, float scrollprogress) { float rotation = (mIn?)                Transition_screen_rotation:-transition_screen_rotation) * scrollprogress;                V.setpivotx ((scrollprogress + 1) * V.getmeasuredwidth () * 0.5f);                V.setpivoty (V.getmeasuredheight () * 0.5f);            V.setrotationy (rotation); }} public static class Crossfade extends TransitionEffect {public Crossfade (Workspace Workspace            ) {Super (workspace, Transition_effect_crossfade); } @Override public void screenscrolled (View v, int i, float scrollprogress) {float A                Lpha = 1-math.abs (scrollprogress);                V.setpivotx (V.getmeasuredwidth () * 0.5f);                V.setpivoty (V.getmeasuredheight () * 0.5f);            V.setalpha (Alpha); }} public static class overview extends TransitioneffeCT {private Acceleratedecelerateinterpolator mscaleinterpolator = new Acceleratedecelerateinterpolator ();            Public Overview (Workspace Workspace) {super (Workspace, Transition_effect_overview); } @Override public void screenscrolled (View v, int i, float scrollprogress) {float s  Cale = 1.0f-0.1f * Mscaleinterpolator.getinterpolation (Math.min (0.3f, Math.Abs (scrollprogress))/                0.3F);                V.setpivotx (scrollprogress < 0 0:v.getmeasuredwidth ());                V.setpivoty (V.getmeasuredheight () * 0.5f);                V.setscalex (scale);                V.setscaley (scale);            Mworkspace.setchildalpha (v, scale); }        }    }

Some effects also need to be adjusted according to their needs slowly.

Change WorkSpace PageScroll Effect