Imported Upstream version 0.6.0upstream/0.6.0

1 files changed, 656 insertions, 112 deletions

diff --git a/src/renderers/pieRenderer.vala b/src/renderers/pieRenderer.vala
index 8085758..2edee09 100644
--- a/src/renderers/pieRenderer.vala
+++ b/src/renderers/pieRenderer.vala
@@ -1,19 +1,19 @@
-/*
-Copyright (c) 2011 by Simon Schneegans
-
-This program is free software: you can redistribute it and/or modify it
-under the terms of the GNU General Public License as published by the Free
-Software Foundation, either version 3 of the License, or (at your option)
-any later version.
-
-This program is distributed in the hope that it will be useful, but WITHOUT
-ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-more details.
-
-You should have received a copy of the GNU General Public License along with
-this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
+/////////////////////////////////////////////////////////////////////////
+// Copyright (c) 2011-2015 by Simon Schneegans
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or (at
+// your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+/////////////////////////////////////////////////////////////////////////
 
 using GLib.Math;
 
@@ -49,13 +49,89 @@ public class PieRenderer : GLib.Object {
     /// The width and height of the Pie in pixels.
     /////////////////////////////////////////////////////////////////////
 
-    public int size { get; private set; }
+    public int size_w { get; private set; }
+    public int size_h { get; private set; }
+
+    /////////////////////////////////////////////////////////////////////
+    /// Center position relative to window top-left corner
+    /////////////////////////////////////////////////////////////////////
+
+    public int center_x { get; private set; }
+    public int center_y { get; private set; }
 
+
+    ////////////////////////////////////////////////////////////////////
+    /// Possible show pie modes.
+    /// FULL_PIE:       Show the pie as a complete circle.
+    /// HPIE_LEFT:      Eat half pie so it can be shown at the left of the screen.
+    /// HPIE_RIGHT:     Eat half pie so it can be shown at the right of the screen.
+    /// HPIE_TOP:       Eat half pie so it can be shown at the top of the screen.
+    /// HPIE_BOTTOM:    Eat half pie so it can be shown at the bottom of the screen.
+    /// CPIE_TOP_LEFT:  Eat  3/4 pie so it can be shown at the top-left corner.
+    /// CPIE_TOP_RIGHT: Eat  3/4 pie so it can be shown at the top-right corner.
+    /// CPIE_BOT_LEFT:  Eat  3/4 pie so it can be shown at the bottom-left corner.
+    /// CPIE_BOT_RIGHT: Eat  3/4 pie so it can be shown at the bottom-right corner.
     /////////////////////////////////////////////////////////////////////
-    /// True if the pie should close when it's trigger is released.
+
+    public enum ShowPieMode {
+        FULL_PIE,
+        HPIE_LEFT, HPIE_RIGHT, HPIE_TOP, HPIE_BOTTOM,
+        CPIE_TOP_LEFT, CPIE_TOP_RIGHT, CPIE_BOT_LEFT, CPIE_BOT_RIGHT}
+
     /////////////////////////////////////////////////////////////////////
+    ///  Show pie mode: full, half-circle, corner
+    /////////////////////////////////////////////////////////////////////
+
+    public ShowPieMode pie_show_mode { get; private set; default= ShowPieMode.FULL_PIE; }
+
+    /////////////////////////////////////////////////////////////////////
+    /// Number of visible slices
+    /////////////////////////////////////////////////////////////////////
+
+    public int visible_slice_count { get; private set; }
 
-    public bool turbo_mode { get; private set; default=false; }
+    public int original_visible_slice_count { get; private set; }
+
+    /////////////////////////////////////////////////////////////////////
+    /// Number of slices in full pie (visible or not)
+    /////////////////////////////////////////////////////////////////////
+
+    public int total_slice_count { get; private set; }
+
+    /////////////////////////////////////////////////////////////////////
+    /// Maximun number of visible slices in a full pie
+    /////////////////////////////////////////////////////////////////////
+
+    public int max_visible_slices { get; private set; }
+
+    /////////////////////////////////////////////////////////////////////
+    /// The index of the first visible slice
+    /////////////////////////////////////////////////////////////////////
+
+    public int first_slice_idx { get; private set; }
+
+    /////////////////////////////////////////////////////////////////////
+    /// Angular position of the first visible slice
+    /////////////////////////////////////////////////////////////////////
+
+    public double first_slice_angle { get; private set; }
+
+    /////////////////////////////////////////////////////////////////////
+    /// Index of the slice where to go when up/down/left/right key is pressed
+    /// or -1 if that side of the pie was eaten
+    /////////////////////////////////////////////////////////////////////
+
+    public int up_slice_idx { get; private set; }
+    public int down_slice_idx { get; private set; }
+    public int left_slice_idx { get; private set; }
+    public int right_slice_idx { get; private set; }
+
+
+    /////////////////////////////////////////////////////////////////////
+    /// The ID of the currently loaded Pie.
+    /////////////////////////////////////////////////////////////////////
+
+    public string id { get; private set; }
 
     /////////////////////////////////////////////////////////////////////
     /// True if the pie is currently navigated with the keyboard. This is
@@ -77,6 +153,11 @@ public class PieRenderer : GLib.Object {
     private CenterRenderer center;
 
     /////////////////////////////////////////////////////////////////////
+    /// Maximum distance from the center that activates the slices
+    /////////////////////////////////////////////////////////////////////
+    private int activation_range;
+
+    /////////////////////////////////////////////////////////////////////
     /// C'tor, initializes members.
     /////////////////////////////////////////////////////////////////////
 
@@ -85,7 +166,35 @@ public class PieRenderer : GLib.Object {
         this.center = new CenterRenderer(this);
         this.quickaction = -1;
         this.active_slice = -2;
-        this.size = 0;
+        this.size_w = 0;
+        this.size_h = 0;
+        this.activation_range= 300;
+
+        this.max_visible_slices= Config.global.max_visible_slices;
+
+        set_show_mode(ShowPieMode.FULL_PIE);
+    }
+
+
+    private void get_mouse_and_screen(out int mousex, out int mousey, out int screenx, out int screeny) {
+        // get the mouse position and screen resolution
+        double x = 0.0;
+        double y = 0.0;
+
+        var display = Gdk.Display.get_default();
+        var manager = display.get_device_manager();
+        GLib.List<weak Gdk.Device?> list = manager.list_devices(Gdk.DeviceType.MASTER);
+
+        foreach(var device in list) {
+            if (device.input_source != Gdk.InputSource.KEYBOARD) {
+                Gdk.Screen screen;
+                device.get_position( out screen, out x, out y );
+            }
+        }
+        mousex= (int) x;
+        mousey= (int) y;
+        screenx= Gdk.Screen.width();
+        screeny= Gdk.Screen.height();
     }
 
     /////////////////////////////////////////////////////////////////////
@@ -95,6 +204,8 @@ public class PieRenderer : GLib.Object {
     public void load_pie(Pie pie) {
         this.slices.clear();
 
+        this.id = pie.id;
+
         int count = 0;
         foreach (var group in pie.action_groups) {
             foreach (var action in group.actions) {
@@ -110,18 +221,200 @@ public class PieRenderer : GLib.Object {
             }
         }
 
-        this.turbo_mode = PieManager.get_is_turbo(pie.id);
-
         this.set_highlighted_slice(this.quickaction);
 
-        this.size = (int)fmax(2*Config.global.theme.radius + 2*Config.global.theme.slice_radius*Config.global.theme.max_zoom,
-                              2*Config.global.theme.center_radius);
 
+        ShowPieMode showpie= ShowPieMode.FULL_PIE;
+        //set full pie to determine the number of visible slices
+        set_show_mode(showpie);
+
+        int sz0= (int)fmax(2*Config.global.theme.radius + 2*Config.global.theme.visible_slice_radius*Config.global.theme.max_zoom,
+                           2*Config.global.theme.center_radius);
+
+        int sz= sz0;
         // increase size if there are many slices
-        if (slices.size > 0) {
-            this.size = (int)fmax(this.size,
-                (((Config.global.theme.slice_radius + Config.global.theme.slice_gap)/tan(PI/slices.size))
-                + Config.global.theme.slice_radius)*2*Config.global.theme.max_zoom);
+        if (this.total_slice_count > 0) {
+            sz = (int)fmax(sz0,
+                (((Config.global.theme.slice_radius + Config.global.theme.slice_gap)/tan(PI/this.total_slice_count))
+                 + Config.global.theme.visible_slice_radius)*2*Config.global.theme.max_zoom);
+        }
+
+
+
+
+        // get mouse position and screen resolution
+        int mouse_x, mouse_y, screen_x, screen_y;
+        get_mouse_and_screen( out mouse_x, out mouse_y, out screen_x, out screen_y );
+
+        //reduce the window size if needed to get closer to the actual mouse position
+        int reduce_szx= 1;
+        int reduce_szy= 1;
+
+        if (PieManager.get_is_auto_shape(pie.id) && !PieManager.get_is_centered(pie.id)) {
+            //set the best show mode that put the mouse near the center
+            if (mouse_x < sz/2) {
+                if (mouse_y < sz/2)
+                    showpie= ShowPieMode.CPIE_TOP_LEFT;         //show 1/4 pie
+                else if (screen_y > 0 && screen_y-mouse_y < sz/2)
+                    showpie= ShowPieMode.CPIE_BOT_LEFT;         //show 1/4 pie
+                else
+                    showpie= ShowPieMode.HPIE_LEFT;             //show 1/2 pie
+
+            } else if (mouse_y < sz/2) {
+                if (screen_x > 0 && screen_x-mouse_x < sz/2)
+                    showpie= ShowPieMode.CPIE_TOP_RIGHT;        //show 1/4 pie
+                else
+                    showpie= ShowPieMode.HPIE_TOP;              //show 1/2 pie
+
+            } else if (screen_x > 0 && screen_x-mouse_x < sz/2) {
+                if (screen_y > 0 && screen_y-mouse_y < sz/2)
+                    showpie= ShowPieMode.CPIE_BOT_RIGHT;        //show 1/4 pie
+                else
+                    showpie= ShowPieMode.HPIE_RIGHT;            //show 1/2 pie
+
+            } else if (screen_y > 0 && screen_y-mouse_y < sz/2)
+                showpie= ShowPieMode.HPIE_BOTTOM;               //show 1/2 pie
+
+
+        } else {
+            //if the pie is centered in the screen, don't reduce the size
+            if (PieManager.get_is_centered(pie.id)) {
+                reduce_szx= 0;
+                reduce_szy= 0;
+            }
+
+            //select the configured shape
+            //convert from radio-buttum number to ShowPieMode enum
+            switch( PieManager.get_shape_number(pie.id) ) {
+            case 1:
+                showpie= ShowPieMode.CPIE_BOT_RIGHT;
+                if (screen_x-mouse_x > sz/2)
+                    reduce_szx= 0; //keep full width
+                if (screen_y-mouse_y > sz/2)
+                    reduce_szy= 0; //keep full height
+                break;
+            case 2:
+                showpie= ShowPieMode.HPIE_RIGHT;
+                if (screen_x-mouse_x > sz/2)
+                    reduce_szx= 0; //keep full width
+                break;
+            case 3:
+                showpie= ShowPieMode.CPIE_TOP_RIGHT;
+                if (screen_x-mouse_x > sz/2)
+                    reduce_szx= 0; //keep full width
+                if (mouse_y > sz/2)
+                    reduce_szy= 0; //keep full height
+                break;
+            case 4:
+                showpie= ShowPieMode.HPIE_BOTTOM;
+                if (screen_y-mouse_y > sz/2)
+                    reduce_szy= 0; //keep full height
+                break;
+            case 6:
+                showpie= ShowPieMode.HPIE_TOP;
+                if (mouse_y > sz/2)
+                    reduce_szy= 0; //keep full height
+                break;
+            case 7:
+                showpie= ShowPieMode.CPIE_BOT_LEFT;
+                if (mouse_x > sz/2)
+                    reduce_szx= 0; //keep full width
+                if (screen_y-mouse_y > sz/2)
+                    reduce_szy= 0; //keep full height
+                break;
+            case 8:
+                showpie= ShowPieMode.HPIE_LEFT;
+                if (mouse_x > sz/2)
+                    reduce_szx= 0; //keep full width
+                break;
+            case 9:
+                showpie= ShowPieMode.CPIE_TOP_LEFT;
+                if (mouse_x > sz/2)
+                    reduce_szx= 0; //keep full width
+                if (mouse_y > sz/2)
+                    reduce_szy= 0; //keep full height
+                break;
+            }
+        }
+        //set the new show pie mode
+        set_show_mode(showpie);
+
+        //recalc size
+        sz = sz0;
+        if (this.total_slice_count > 0) {
+            sz = (int)fmax(sz0,
+                (((Config.global.theme.slice_radius + Config.global.theme.slice_gap)/tan(PI/this.total_slice_count))
+                 + Config.global.theme.visible_slice_radius)*2*Config.global.theme.max_zoom);
+        }
+        //activation_range = normal pie radius + "outer" activation_range
+        this.activation_range= (int)((double)Config.global.activation_range + sz/(2*Config.global.theme.max_zoom));
+
+        int szx = 1; //full width
+        int szy = 1; //full height
+        switch(this.pie_show_mode) {
+            //half pie
+            case ShowPieMode.HPIE_LEFT:
+                szx = 0; //half width, center to the left
+                break;
+            case ShowPieMode.HPIE_RIGHT:
+                szx = 2; //half width, center to the right
+                break;
+            case ShowPieMode.HPIE_TOP:
+                szy = 0; //half height, center to the top
+                break;
+            case ShowPieMode.HPIE_BOTTOM:
+                szy = 2; //half height, center to the bottom
+                break;
+
+            //cuarter pie
+            case ShowPieMode.CPIE_TOP_LEFT:
+                szx = 0; //half width, center to the left
+                szy = 0; //half height, center to the top
+                break;
+            case ShowPieMode.CPIE_TOP_RIGHT:
+                szx = 2; //half width, center to the right
+                szy = 0; //half height, center to the top
+                break;
+            case ShowPieMode.CPIE_BOT_LEFT:
+                szx = 0; //half width, center to the left
+                szy = 2; //half height, center to the bottom
+                break;
+            case ShowPieMode.CPIE_BOT_RIGHT:
+                szx = 2; //half width, center to the right
+                szy = 2; //half height, center to the bottom
+                break;
+        }
+        if (reduce_szx == 0)
+            szx = 1;    //don't reduce width
+        if (reduce_szy == 0)
+            szy = 1;    //don't reduce height
+
+        int rc = (int)Config.global.theme.center_radius;
+        if (szx == 1 ) {
+            //full width
+            this.size_w = sz;
+            this.center_x = sz/2;    //center position
+        } else {
+            //half width
+            this.size_w = sz/2 + rc;
+            if (szx == 0) {
+                this.center_x = rc;    //center to the left
+            } else {
+                this.center_x = this.size_w-rc;    //center to the right
+            }
+        }
+        if (szy == 1) {
+            //full heigth
+            this.size_h = sz;
+            this.center_y = sz/2;    //center position
+        } else {
+            //half heigth
+            this.size_h = sz/2 + rc;
+            if (szy == 0) {
+                this.center_y = rc;    //center to the top
+            } else {
+                this.center_y = this.size_h-rc;    //center to the bottom
+            }
         }
     }
 
@@ -130,12 +423,16 @@ public class PieRenderer : GLib.Object {
     /////////////////////////////////////////////////////////////////////
 
     public void activate() {
-        if (this.active_slice >= 0 && this.active_slice < this.slices.size) {
+        if (this.active_slice >= this.first_slice_idx
+            && this.active_slice < this.first_slice_idx+this.visible_slice_count) {
             slices[active_slice].activate();
         }
 
-        foreach (var slice in this.slices)
-            slice.fade_out();
+        //foreach (var slice in this.slices)
+        //    slice.fade_out();
+        for (int i= 0; i < this.visible_slice_count; ++i) {
+            this.slices[ i+this.first_slice_idx ].fade_out();
+        }
 
         center.fade_out();
     }
@@ -145,29 +442,23 @@ public class PieRenderer : GLib.Object {
     /////////////////////////////////////////////////////////////////////
 
     public void cancel() {
-        foreach (var slice in this.slices)
-            slice.fade_out();
+        //foreach (var slice in this.slices)
+        //    slice.fade_out();
+        for (int i= 0; i < this.visible_slice_count; ++i) {
+            this.slices[ i+this.first_slice_idx ].fade_out();
+        }
 
         center.fade_out();
     }
 
+
     /////////////////////////////////////////////////////////////////////
     /// Called when the up-key is pressed. Selects the next slice towards
     /// the top.
     /////////////////////////////////////////////////////////////////////
 
     public void select_up() {
-        int bottom = this.slice_count()/4;
-        int top = this.slice_count()*3/4;
-
-        if (this.active_slice == -1 || this.active_slice == bottom)
-           this.set_highlighted_slice(top);
-        else if (this.active_slice > bottom && this.active_slice < top)
-           this.set_highlighted_slice(this.active_slice+1);
-        else if (this.active_slice != top)
-           this.set_highlighted_slice((this.active_slice-1+this.slice_count())%this.slice_count());
-
-        this.key_board_control = true;
+        move_active_slice(this.up_slice_idx, this.down_slice_idx);
     }
 
     /////////////////////////////////////////////////////////////////////
@@ -176,17 +467,7 @@ public class PieRenderer : GLib.Object {
     /////////////////////////////////////////////////////////////////////
 
     public void select_down() {
-        int bottom = this.slice_count()/4;
-        int top = this.slice_count()*3/4;
-
-        if (this.active_slice == -1 || this.active_slice == top)
-           this.set_highlighted_slice(bottom);
-        else if (this.active_slice > bottom && this.active_slice < top)
-           this.set_highlighted_slice(this.active_slice-1);
-        else if (this.active_slice != bottom)
-           this.set_highlighted_slice((this.active_slice+1)%this.slice_count());
-
-        this.key_board_control = true;
+        move_active_slice(this.down_slice_idx, this.up_slice_idx);
     }
 
     /////////////////////////////////////////////////////////////////////
@@ -195,17 +476,7 @@ public class PieRenderer : GLib.Object {
     /////////////////////////////////////////////////////////////////////
 
     public void select_left() {
-        int left = this.slice_count()/2;
-        int right = 0;
-
-        if (this.active_slice == -1 || this.active_slice == right)
-           this.set_highlighted_slice(left);
-        else if (this.active_slice > left)
-           this.set_highlighted_slice(this.active_slice-1);
-        else if (this.active_slice < left)
-           this.set_highlighted_slice(this.active_slice+1);
-
-        this.key_board_control = true;
+        move_active_slice(this.left_slice_idx, this.right_slice_idx);
     }
 
     /////////////////////////////////////////////////////////////////////
@@ -214,17 +485,79 @@ public class PieRenderer : GLib.Object {
     /////////////////////////////////////////////////////////////////////
 
     public void select_right() {
-        int left = this.slice_count()/2;
-        int right = 0;
+        move_active_slice(this.right_slice_idx, this.left_slice_idx);
+    }
 
-        if (this.active_slice == -1 || this.active_slice == left)
-           this.set_highlighted_slice(right);
-        else if (this.active_slice > left)
-           this.set_highlighted_slice((this.active_slice+1)%this.slice_count());
-        else if (this.active_slice < left && this.active_slice != right)
-           this.set_highlighted_slice((this.active_slice-1+this.slice_count())%this.slice_count());
+    /////////////////////////////////////////////////////////////////////
+    /// Called when the page_up-key is pressed. Selects the next
+    /// group of slices.
+    /////////////////////////////////////////////////////////////////////
 
-        this.key_board_control = true;
+    public void select_nextpage() {
+        if (this.first_slice_idx+this.visible_slice_count < slices.size) {
+            //advance one page
+            this.first_slice_idx += this.visible_slice_count;
+            if (this.first_slice_idx+this.visible_slice_count >= slices.size) {
+                this.visible_slice_count= slices.size - this.first_slice_idx;
+            }
+            this.reset_sclice_anim();
+            this.set_highlighted_slice(-1);
+            calc_key_navigation_pos();
+            this.key_board_control = true;
+
+        } else if (this.first_slice_idx > 0) {
+            //go to first page
+            this.first_slice_idx= 0;
+            this.reset_sclice_anim();
+            //recover the original value
+            this.visible_slice_count= this.original_visible_slice_count;
+            this.reset_sclice_anim();
+            this.set_highlighted_slice(-1);
+            calc_key_navigation_pos();
+            this.key_board_control = true;
+        }
+    }
+
+    /////////////////////////////////////////////////////////////////////
+    /// Called when the page_down-key is pressed. Selects the previous
+    /// group of slices.
+    /////////////////////////////////////////////////////////////////////
+
+    public void select_prevpage() {
+        if (this.first_slice_idx > 0) {
+            //go back one page
+            //recover the original value
+            this.visible_slice_count= this.original_visible_slice_count;
+            this.first_slice_idx -= this.visible_slice_count;
+            if (this.first_slice_idx < 0) {
+                this.first_slice_idx= 0;
+            }
+            this.reset_sclice_anim();
+            this.set_highlighted_slice(-1);
+            calc_key_navigation_pos();
+            this.key_board_control = true;
+
+        } else if (this.visible_slice_count < slices.size) {
+            //go to last page
+            int n= slices.size % this.original_visible_slice_count;
+            if (n == 0)
+                //all pages have the same number of slices
+                this.visible_slice_count= this.original_visible_slice_count;
+            else
+                //last page has less slices than previous
+                this.visible_slice_count= n;
+            this.first_slice_idx= slices.size - this.visible_slice_count;
+            this.reset_sclice_anim();
+            this.set_highlighted_slice(-1);
+            calc_key_navigation_pos();
+            this.key_board_control = true;
+        }
+    }
+
+    private void reset_sclice_anim() {
+        //reset animation values in all the new visible slices
+        for (int i= 0; i < this.visible_slice_count; ++i)
+            this.slices[ i+this.first_slice_idx ].reset_anim();
     }
 
     /////////////////////////////////////////////////////////////////////
@@ -240,41 +573,58 @@ public class PieRenderer : GLib.Object {
     /////////////////////////////////////////////////////////////////////
 
     public void draw(double frame_time, Cairo.Context ctx, int mouse_x, int mouse_y) {
-        if (this.size > 0) {
-	        double distance = sqrt(mouse_x*mouse_x + mouse_y*mouse_y);
-	        double angle = 0.0;
-
-	        if (this.key_board_control) {
-	            angle = 2.0*PI*this.active_slice/(double)slice_count();
-	        } else {
-
-	            if (distance > 0) {
-	                angle = acos(mouse_x/distance);
-		            if (mouse_y < 0)
-		                angle = 2*PI - angle;
-	            }
-
-	            int next_active_slice = this.active_slice;
-
-	            if (distance < Config.global.theme.active_radius
-	                && this.quickaction >= 0 && this.quickaction < this.slices.size) {
+        if (this.size_w > 0) {
+            double distance = sqrt(mouse_x*mouse_x + mouse_y*mouse_y);
+            double angle = 0.0;
+            int slice_track= 0;
+
+            if (this.key_board_control) {
+                int n= this.active_slice - this.first_slice_idx;
+                angle = 2.0*PI*n/(double)this.total_slice_count + this.first_slice_angle;
+                slice_track= 1;
+            } else {
+
+                if (distance > 0) {
+                    angle = acos(mouse_x/distance);
+                    if (mouse_y < 0)
+                        angle = 2*PI - angle;
+                }
 
-	                next_active_slice = this.quickaction;
-	                angle = 2.0*PI*quickaction/(double)slice_count();
-	            } else if (distance > Config.global.theme.active_radius && this.slice_count() > 0 && distance < Config.global.activation_range) {
-	                next_active_slice = (int)(angle*slices.size/(2*PI) + 0.5) % this.slice_count();
-	            } else {
-	                next_active_slice = -1;
-	            }
+                int next_active_slice = this.active_slice;
+
+                if (distance < Config.global.theme.active_radius
+                    && this.quickaction >= this.first_slice_idx
+                    && this.quickaction < this.first_slice_idx+this.visible_slice_count) {
+
+                    next_active_slice = this.quickaction;
+                    int n= this.quickaction - this.first_slice_idx;
+                    angle = 2.0*PI*n/(double)this.total_slice_count + this.first_slice_angle;
+
+                } else if (distance > Config.global.theme.active_radius && this.total_slice_count > 0
+                           && distance < this.activation_range) {
+                    double a= angle-this.first_slice_angle;
+                    if (a < 0)
+                        a= a + 2*PI;
+                    next_active_slice = (int)(a*this.total_slice_count/(2*PI) + 0.5) % this.total_slice_count;
+                    if (next_active_slice >= this.visible_slice_count)
+                        next_active_slice = -1;
+                    else {
+                        next_active_slice = next_active_slice + this.first_slice_idx;
+                        slice_track= 1;
+                    }
+                } else {
+                    next_active_slice = -1;
+                }
 
-	            this.set_highlighted_slice(next_active_slice);
-	        }
+                this.set_highlighted_slice(next_active_slice);
+            }
 
-            center.draw(frame_time, ctx, angle, distance);
+            center.draw(frame_time, ctx, angle, slice_track);
 
-	        foreach (var slice in this.slices)
-		        slice.draw(frame_time, ctx, angle, distance);
-		}
+            for (int i= 0; i < this.visible_slice_count; ++i) {
+               this.slices[ i+this.first_slice_idx ].draw(frame_time, ctx, angle, slice_track);
+            }
+        }
     }
 
     /////////////////////////////////////////////////////////////////////
@@ -291,21 +641,215 @@ public class PieRenderer : GLib.Object {
 
     public void set_highlighted_slice(int index) {
         if (index != this.active_slice) {
-            if (index >= 0 && index < this.slice_count())
+            if (index >= this.first_slice_idx && index < this.first_slice_idx+this.visible_slice_count)
                 this.active_slice = index;
-            else if (this.quickaction >= 0)
-                this.active_slice = this.quickaction;
             else
                 this.active_slice = -1;
 
-            SliceRenderer? active = (this.active_slice >= 0 && this.active_slice < this.slice_count()) ?
+            SliceRenderer? active = (this.active_slice >= 0 && this.active_slice < slices.size) ?
                                      this.slices[this.active_slice] : null;
 
             center.set_active_slice(active);
 
-            foreach (var slice in this.slices)
-                slice.set_active_slice(active);
+            for (int i= 0; i < this.visible_slice_count; ++i) {
+               this.slices[ i+this.first_slice_idx ].set_active_slice(active);
+            }
+        }
+    }
+
+    private void set_show_mode(ShowPieMode show_mode) {
+        //The index of the first visible slice
+        this.first_slice_idx= 0;
+        //Angular position of the first visible slice
+        this.first_slice_angle= 0;
+
+        int mult= 1;
+        switch(show_mode) {
+            //half pie
+            case ShowPieMode.HPIE_LEFT:
+                mult= 2;
+                this.first_slice_angle= -PI/2;
+                break;
+            case ShowPieMode.HPIE_RIGHT:
+                mult= 2;
+                this.first_slice_angle= PI/2;
+                break;
+            case ShowPieMode.HPIE_TOP:
+                mult= 2;
+                break;
+            case ShowPieMode.HPIE_BOTTOM:
+                this.first_slice_angle= PI;
+                mult= 2;
+                break;
+
+            //cuarter pie
+            case ShowPieMode.CPIE_TOP_LEFT:
+                mult= 4;
+                break;
+            case ShowPieMode.CPIE_TOP_RIGHT:
+                this.first_slice_angle= PI/2;
+                mult= 4;
+                break;
+            case ShowPieMode.CPIE_BOT_LEFT:
+                this.first_slice_angle= -PI/2;
+                mult= 4;
+                break;
+            case ShowPieMode.CPIE_BOT_RIGHT:
+                this.first_slice_angle= PI;
+                mult= 4;
+                break;
+
+            default:     //ShowPieMode.FULL_PIE or invalid values
+                show_mode= ShowPieMode.FULL_PIE;
+                break;
+        }
+        this.pie_show_mode= show_mode;
+        //limit the number of visible slices
+        int maxview= this.max_visible_slices / mult;
+        //Number of visible slices
+        this.visible_slice_count= (int)fmin(slices.size, maxview);
+        //Number of slices in full pie (visible or not)
+        this.total_slice_count= this.visible_slice_count*mult;
+        if (mult > 1 && slices.size > 1) {
+            this.total_slice_count -= mult;
         }
+
+        //keep a copy of the original value since page up/down change it
+        original_visible_slice_count= visible_slice_count;
+
+        calc_key_navigation_pos();
+    }
+
+    private void calc_key_navigation_pos() {
+           //calc slices index for keyboard navigation
+
+        int a= this.first_slice_idx;
+        int b= this.first_slice_idx + this.visible_slice_count/4;
+        int c= this.first_slice_idx + this.visible_slice_count/2;
+        int d= this.first_slice_idx + (this.visible_slice_count*3)/4;
+        int e= this.first_slice_idx + this.visible_slice_count -1;
+        switch(this.pie_show_mode) {
+            //half pie
+            case ShowPieMode.HPIE_LEFT:
+                this.up_slice_idx=    a;
+                this.right_slice_idx= c;
+                this.down_slice_idx=  e;
+                this.left_slice_idx=  -1;    //no left slice, go up instead
+                break;
+            case ShowPieMode.HPIE_RIGHT:
+                this.down_slice_idx=  a;
+                this.left_slice_idx=  c;
+                this.up_slice_idx=    e;
+                this.right_slice_idx= -1;   //no right slice, go down instead
+                break;
+            case ShowPieMode.HPIE_TOP:
+                this.right_slice_idx= a;
+                this.down_slice_idx=  c;
+                this.left_slice_idx=  e;
+                this.up_slice_idx=    -1;    //no up slice, go left instead
+                break;
+            case ShowPieMode.HPIE_BOTTOM:
+                this.left_slice_idx=  a;
+                this.up_slice_idx=    c;
+                this.right_slice_idx= e;
+                this.down_slice_idx=  -1;   //no down slice, go right instead
+                break;
+
+            //cuarter pie
+            case ShowPieMode.CPIE_TOP_LEFT:
+                this.right_slice_idx= a;
+                this.down_slice_idx=  e;
+                this.up_slice_idx=    -1;    //no up slice, go right instead
+                this.left_slice_idx=  -1;    //no left slice, go down instead
+                break;
+            case ShowPieMode.CPIE_TOP_RIGHT:
+                this.down_slice_idx=  a;
+                this.left_slice_idx=  e;
+                this.up_slice_idx=    -1;    //no up slice, go left instead
+                this.right_slice_idx= -1;    //no righ slice, go down instead
+                break;
+            case ShowPieMode.CPIE_BOT_LEFT:
+                this.up_slice_idx=    a;
+                this.right_slice_idx= e;
+                this.down_slice_idx=  -1;    //no down slice, go right instead
+                this.left_slice_idx=  -1;    //no left slice, go up instead
+                break;
+            case ShowPieMode.CPIE_BOT_RIGHT:
+                this.left_slice_idx=  a;
+                this.up_slice_idx=    e;
+                this.down_slice_idx=  -1;    //no down slice, go left instead
+                this.right_slice_idx= -1;    //no right slice, go up instead
+                break;
+
+            default:     //ShowPieMode.FULL_PIE or invalid values
+                this.right_slice_idx= a;
+                this.down_slice_idx=  b;
+                this.left_slice_idx=  c;
+                this.up_slice_idx=    d;
+                break;
+        }
+    }
+
+
+   /////////////////////////////////////////////////////////////////////
+    /// keyboard navigation helper
+    /// move current position one slice towards the given extreme
+    /////////////////////////////////////////////////////////////////////
+
+    private void move_active_slice(int extreme, int other_extreme ) {
+        int pos= this.active_slice;
+
+        if (pos < 0 || pos == extreme) {
+            //no actual position or allready at the extreme
+            pos= extreme; //go to the extreme pos
+
+        } else if (extreme == -1) {
+            //the extreme was eaten, just go away from the other_extreme
+            if (pos > other_extreme || other_extreme == 0) {
+                if (pos < this.visible_slice_count+this.first_slice_idx-1)
+                    pos++;
+            } else if (pos > this.first_slice_idx)
+                pos--;
+
+        } else if (other_extreme == -1) {
+            //the other_extreme was eaten, just get closer to the extreme
+            if (pos < extreme)
+                pos++;
+            else if (pos > extreme)
+                pos--;
+
+        } else if (pos == other_extreme) {
+            //both extremes are present
+            //jump quickly form one extreme to the other
+            pos= extreme; //go to the extreme pos
+
+        } else {
+            //both extremes are present
+            //add or substract 1 to position in a circular manner
+            if (extreme > other_extreme) {
+                if (pos > other_extreme && pos < extreme)
+                    //other_extreme < pos < extreme
+                    pos= pos+1;
+                else
+                    pos= pos-1;
+            } else {
+                if (pos > extreme && pos < other_extreme)
+                    //extreme < pos < other_extreme
+                    pos= pos-1;
+                else
+                    pos= pos+1;
+            }
+
+            if (pos < this.first_slice_idx)
+                pos= this.visible_slice_count-1+this.first_slice_idx;
+
+            if (pos >= this.visible_slice_count+this.first_slice_idx)
+                pos= this.first_slice_idx;
+        }
+
+        this.set_highlighted_slice(pos);
+
+        this.key_board_control = true;
     }
 }