diff --git a/android/CMakeLists.txt b/android/CMakeLists.txt
index b980404..930d09f 100644
--- a/android/CMakeLists.txt
+++ b/android/CMakeLists.txt
@@ -114,7 +114,7 @@ target_link_libraries(
 	native-lib
 	android
 	app-glue
-	${CMAKE_SOURCE_DIR}/../libs/curl-android-ios/android/armeabi-v7a/libcurl.a
+	${CMAKE_SOURCE_DIR}/../libs/curl-android-ios/android/${ANDROID_ABI}/libcurl.a
 	EGL
 	GLESv3
 	log
diff --git a/android/src/main/cpp/main.cpp b/android/src/main/cpp/main.cpp
index a2407a8..43aba32 100755
--- a/android/src/main/cpp/main.cpp
+++ b/android/src/main/cpp/main.cpp
@@ -269,6 +269,7 @@ JNIEXPORT void JNICALL Java_com_omixlab_panopainter_MainActivity_pickExternalCal
 
     LOG("data_path %s", file_path.c_str());
     App::I.data_path = file_path;
+    App::I.work_path = file_path;
 }
 }
 
diff --git a/android/src/main/java/com/omixlab/panopainter/MainActivity.java b/android/src/main/java/com/omixlab/panopainter/MainActivity.java
index 42d3081..3fa4207 100644
--- a/android/src/main/java/com/omixlab/panopainter/MainActivity.java
+++ b/android/src/main/java/com/omixlab/panopainter/MainActivity.java
@@ -33,22 +33,22 @@ public class MainActivity extends NativeActivity {
 
     public void setRootPath()
     {
-        Log.v("MainActivity", "permission granted");
+        Log.v("PanoPainterJava", "permission granted");
         File d = Environment.getExternalStorageDirectory();
         File pano_dir = new File(d, "PanoPainter");
 
         if (!pano_dir.exists())
         {
             if (pano_dir.mkdirs())
-                Log.v("MainActivity", "create path " + pano_dir.getAbsolutePath());
+                Log.v("PanoPainterJava", "create path " + pano_dir.getAbsolutePath());
             else
-                Log.v("MainActivity", "create path failed");
+                Log.v("PanoPainterJava", "create path failed");
 
         }
         pickExternalCallback(pano_dir.getAbsolutePath());
     }
     public void checkPermissionReadStorage(){
-        Log.v("MainActivity", "permission checking");
+        Log.v("PanoPainterJava", "permission checking");
         if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.M) {
             setRootPath();
         } else {
@@ -68,14 +68,14 @@ public class MainActivity extends NativeActivity {
                 // No explanation needed, we can request the permission.
 
                 requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
-                Log.v("MainActivity", "permission request");
+                Log.v("PanoPainterJava", "permission request");
 
                 // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
                 // app-defined int constant. The callback method gets the
                 // result of the request.
                 //          }
             } else {
-                Log.v("MainActivity", "permission already granted");
+                Log.v("PanoPainterJava", "permission already granted");
                 setRootPath();
             }
         }
@@ -94,7 +94,7 @@ public class MainActivity extends NativeActivity {
                     // contacts-related task you need to do.
                     setRootPath();
                 } else {
-                    Log.v("MainActivity", "permission denied");
+                    Log.v("PanoPainterJava", "permission denied");
 
                     // permission denied, boo! Disable the
                     // functionality that depends on this permission.
@@ -123,7 +123,7 @@ public class MainActivity extends NativeActivity {
         intent.addCategory(Intent.CATEGORY_OPENABLE);
         intent.setType("*/*");
         startActivityForResult(Intent.createChooser(intent, "Select a file"), 1);
-        Log.v("PICK", "start");
+        Log.v("PanoPainterJava", "pick start");
     }
 
     @Override
@@ -136,7 +136,7 @@ public class MainActivity extends NativeActivity {
             String path = null;
             try {
                 path = PathUtil.getPath(this, uri);
-                Log.v("PICK", "selected " + path);
+                Log.v("PanoPainterJava", "pick selected " + path);
                 pickFileCallback(path);
             } catch (URISyntaxException e) {
                 e.printStackTrace();
diff --git a/data/layout.xml b/data/layout.xml
index 8de6a6f..ab0184e 100644
--- a/data/layout.xml
+++ b/data/layout.xml
@@ -98,6 +98,9 @@
         <button-custom id="btn-down" thickness="1" color="0 0" border-color=".0" shrink="1" margin="0 2 0 0">
           <icon width="30" icon="bullet_arrow_down"/>
         </button-custom>
+        <button-custom id="btn-save" thickness="1" color="0 0" border-color=".0" shrink="1" margin="0 2 0 0">
+          <icon width="30" icon="bullet_disk"/>
+        </button-custom>
         <node grow="1"></node>
         <button-custom id="btn-remove" thickness="1" color="0 0" border-color=".0" shrink="1" margin="0 10 0 0">
           <icon width="30" icon="bin_closed"/>
@@ -513,8 +516,8 @@
           <scroll id="files-list" dir="row" wrap="1" flood-events="1" grow="1" height="100%" margin="0 0 0 0" pad="0 20 0 0" color=".2 .2 .2 1">
           </scroll>
         </border>
-        <node id="footer" height="40" dir="row" align="flex-end" justify="flex-end" pad="10">
-          <node grow="1" os="win,osx"><button id="btn-path" text="Set destination dir" width="120" height="30" margin="0 10 0 0"/></node>
+        <node id="footer" height="50" dir="row" align="flex-end" justify="flex-end" pad="10">
+          <node grow="1" os="win,osx"><button id="btn-path" text="Set destination dir" width="130" height="30" margin="0 10 0 0"/></node>
           <button id="btn-ok" text="Open Project" width="100" height="30" margin="0 10 0 0"/>
           <button id="btn-cancel" text="Cancel" width="60" height="30"/>
         </node>
@@ -1128,7 +1131,7 @@ Here's a list of what's available in this release.
           <button-custom id="btn-stroke" width="50" height="50" margin="0 0 5 0" thickness="1" border-color=".1" pad="2">
             <image path="data/ui/stroke.png" width="100%" height="100%" align="center" justify="flex-end"/>
           </button-custom>
-          <button id="btn-brush-preset" width="50" height="50" margin="0 0 5 0" text="Preset" thickness="1" border-color=".1" pad="2"/>
+          <!--<button id="btn-brush-preset" width="50" height="50" margin="0 0 5 0" text="Preset" thickness="1" border-color=".1" pad="2"/>-->
           <!--
           <button-custom id="btn-brush" width="50" height="50" margin="0 0 5 0" thickness="1" border-color=".1" pad="2">
             <image path="data/ui/brushes.png" width="100%" height="100%" align="center" justify="flex-end"/>
diff --git a/src/app_cloud.cpp b/src/app_cloud.cpp
index ed158e6..c2a3f91 100644
--- a/src/app_cloud.cpp
+++ b/src/app_cloud.cpp
@@ -136,6 +136,8 @@ void App::cloud_browse()
 
     dialog->btn_ok->on_click = [this, dialog](Node*)
     {
+        if (dialog->selected_file.empty())
+            return;
         dialog->destroy();
         std::thread([this, dialog] {
             async_start();
diff --git a/src/app_shaders.cpp b/src/app_shaders.cpp
index 180db4b..aea545c 100644
--- a/src/app_shaders.cpp
+++ b/src/app_shaders.cpp
@@ -170,8 +170,8 @@ void App::initShaders()
         "   if (textureOffset(tex, uv, ivec2(+1, -1)).r == 1.0) zero_count++;\n"
         "   if (textureOffset(tex, uv, ivec2(+1,  0)).r == 1.0) zero_count++;\n"
         "   if (textureOffset(tex, uv, ivec2(+1, +1)).r == 1.0) zero_count++;\n"
-        "   float edge = (zero_count > 1 && zero_count < 9) ? 0.75 : 0.0;\n"
-        "   frag = vec4(col.rgb, edge * (1.0 - zero_count / 9.f));\n"
+        "   mediump float edge = (zero_count > 1 && zero_count < 9) ? 0.75 : 0.0;\n"
+        "   frag = vec4(col.rgb, edge * (1.0 - float(zero_count) / 9.f));\n"
         "}\n";
     // TEXTURE COMP ERASE
     static const char* shader_comp_erase_f =
diff --git a/src/canvas.cpp b/src/canvas.cpp
index 574ed4c..b29e4e1 100644
--- a/src/canvas.cpp
+++ b/src/canvas.cpp
@@ -1741,6 +1741,7 @@ void Canvas::project_save(std::function<void(bool)> on_complete)
 
 void Canvas::project_save(std::string file_path, std::function<void(bool)> on_complete)
 {
+    LOG("saving %s", file_path.c_str());
     if (App::I.check_license())
     {
         std::thread t([=] {
@@ -1750,6 +1751,10 @@ void Canvas::project_save(std::string file_path, std::function<void(bool)> on_co
         });
         t.detach();
     }
+    else
+    {
+        LOG("no license, no save");
+    }
 }
 
 bool Canvas::project_save_thread(std::string file_path)
@@ -1758,7 +1763,10 @@ bool Canvas::project_save_thread(std::string file_path)
 
     // already saved, nothing to do
     if (!m_unsaved && file_path == App::I.doc_path)
+    {
+        LOG("already saved");
         return true;
+    }
 
 //     static char name[128];
 //     sprintf(name, "%s/latlong.ppi", data_path.c_str());
@@ -1768,11 +1776,15 @@ bool Canvas::project_save_thread(std::string file_path)
     std::string file_name = file_path.substr(start, file_path.length() - start - strlen(".ppi"));
     std::string tmp_path = App::I.data_path + '/' + file_name + ".tmp.ppi";
     
+    LOG("file name %s", file_name.c_str());
+    LOG("tmp path %s", tmp_path.c_str());
+
     bool use_tmp = false;
     // check if file already exists
     if ((fp = fopen(file_path.c_str(), "rb")))
     {
         fclose(fp);
+        LOG("use tmp file");
         // use tmp file for writing
         use_tmp = true;
         if (!(fp = fopen(tmp_path.c_str(), "wb")))
@@ -1781,6 +1793,8 @@ bool Canvas::project_save_thread(std::string file_path)
             use_tmp = false;
         }
     }
+
+    LOG("save first time");
     
     if (!fp)
     {
diff --git a/src/log.h b/src/log.h
index 143b747..1d319d8 100644
--- a/src/log.h
+++ b/src/log.h
@@ -4,7 +4,7 @@
 #ifdef __APPLE__
     #define LOG(M,...) { printf(M"\n", ##__VA_ARGS__); LogRemote::I.log(M, ##__VA_ARGS__); }
 #elif __ANDROID__
-    #define LOG(...) { ((void)__android_log_print(ANDROID_LOG_INFO, "native-engine", __VA_ARGS__)); LogRemote::I.log(__VA_ARGS__); }
+    #define LOG(...) { ((void)__android_log_print(ANDROID_LOG_INFO, "PanoPainterCPP", __VA_ARGS__)); LogRemote::I.log(__VA_ARGS__); }
 #elif _WIN32
     #define LOG(M,...) { printf(M"\n", ##__VA_ARGS__); LogRemote::I.log(M, ##__VA_ARGS__); }
     #define LOGW(M,...) { wprintf(M"\n", ##__VA_ARGS__); LogRemote::I.log(M, ##__VA_ARGS__); }
diff --git a/src/node.cpp b/src/node.cpp
index 44b93f6..578526f 100644
--- a/src/node.cpp
+++ b/src/node.cpp
@@ -694,8 +694,8 @@ void Node::update_internal(const glm::vec2& origin, const glm::mat4& proj)
         float pl = YGNodeLayoutGetPadding(parent->y_node, YGEdgeLeft);
         glm::vec2 off_p(pl, pt);
         glm::vec2 off_s(pr, pb);
-        glm::vec4 pclip = { xy(parent->m_clip) + off_p, zw(parent->m_clip) - off_s - off_p};
-        m_clip_uncut = glm::vec4(m_pos, m_size);
+        glm::vec4 pclip = { xy(parent->m_clip) + off_p, zw(parent->m_clip) - (off_s + off_p)};
+        m_clip_uncut = glm::vec4(m_pos - glm::vec2(1), m_size + glm::vec2(2));
         m_clip = rect_intersection(m_clip_uncut, parent->m_clip);
     }
     else
diff --git a/src/node.h b/src/node.h
index 59d0d5a..b3c2656 100644
--- a/src/node.h
+++ b/src/node.h
@@ -240,6 +240,7 @@ public:
     void move_child_offset(Node* n, int offset);
     int get_child_index(Node* n);
     Node* get_child_at(int index);
+    // returns {origin, size} form
     glm::vec4 get_children_rect() const;
     bool is_child_recursive(Node* o) const;
     void mouse_capture();
diff --git a/src/node_panel_brush.cpp b/src/node_panel_brush.cpp
index ee16401..966f38b 100644
--- a/src/node_panel_brush.cpp
+++ b/src/node_panel_brush.cpp
@@ -193,13 +193,33 @@ void NodePanelBrushPreset::init()
         brush->thumb_path = Canvas::I->m_current_brush->m_brush_thumb_path;
         brush->high_path = Canvas::I->m_current_brush->m_brush_path;
         brush->m_brush = std::make_shared<Brush>(*Canvas::I->m_current_brush);
-        brush->m_brush->m_tip_size = .05f;
+        //brush->m_brush->m_tip_size = .05f;
         brush->m_preview->m_brush = brush->m_brush;
         brush->m_preview->draw_stroke();
         brush->m_thumb->set_image(brush->m_brush->m_brush_thumb_path);
         brush->on_click = std::bind(&NodePanelBrushPreset::handle_click, this, std::placeholders::_1);
         save();
     };
+    m_btn_up = find<NodeButtonCustom>("btn-up");
+    m_btn_up->on_click = [this](Node*) {
+        if (m_current)
+            m_container->move_child(m_current, std::max(m_container->get_child_index(m_current) - 1, 0));
+    };
+    m_btn_down = find<NodeButtonCustom>("btn-down");
+    m_btn_down->on_click = [this](Node*) {
+        if (m_current)
+            m_container->move_child(m_current, 
+                std::min(m_container->get_child_index(m_current) + 1, (int)m_container->m_children.size() - 1));
+    };
+    m_btn_save = find<NodeButtonCustom>("btn-save");
+    m_btn_save->on_click = [this](Node*) {
+        if (m_current)
+        {
+            *m_current->m_brush = *Canvas::I->m_current_brush;
+            m_current->m_preview->draw_stroke();
+            m_current->m_thumb->set_image(m_current->m_brush->m_brush_thumb_path);
+        }
+    };
     m_btn_delete = find<NodeButtonCustom>("btn-remove");
     m_btn_delete->on_click = [this](Node*) {
         if (!m_current)
diff --git a/src/node_panel_brush.h b/src/node_panel_brush.h
index d46a7d2..dcb174e 100644
--- a/src/node_panel_brush.h
+++ b/src/node_panel_brush.h
@@ -64,6 +64,7 @@ class NodePanelBrushPreset : public Node
     NodeButtonCustom* m_btn_up;
     NodeButtonCustom* m_btn_down;
     NodeButtonCustom* m_btn_delete;
+    NodeButtonCustom* m_btn_save;
     struct header_t {
         char magic[4]{ 'P', 'P', 'P', 'R' };
         uint16_t version = 0;
diff --git a/src/node_scroll.cpp b/src/node_scroll.cpp
index 5aa2d60..1c32968 100644
--- a/src/node_scroll.cpp
+++ b/src/node_scroll.cpp
@@ -2,6 +2,7 @@
 #include "log.h"
 #include "node_scroll.h"
 #include "event.h"
+#include "shader.h"
 
 NodeScroll::NodeScroll()
 {
@@ -25,6 +26,32 @@ void NodeScroll::fix_scroll()
     m_pos_offset_childred = m_offset;
 }
 
+void NodeScroll::handle_resize(glm::vec2 old_size, glm::vec2 new_size)
+{
+    Node::handle_resize(old_size, new_size);
+    fix_scroll();
+}
+
+void NodeScroll::draw()
+{
+    NodeBorder::draw();
+    glm::vec4 rect = get_children_rect();
+    if (rect.x == 0 || rect.w < m_size.y)
+        return;
+    float h = m_size.y / rect.w * m_size.y;
+    float offset_percent = m_offset.y / (rect.w - m_size.y);
+    float pr = YGNodeLayoutGetPadding(y_node, YGEdgeRight) - 5;
+    glDisable(GL_BLEND);
+    ShaderManager::use(kShader::Color);
+    ShaderManager::u_mat4(kShaderUniform::MVP, m_proj 
+        * glm::translate(glm::vec3(m_pos.x + m_size.x - pr, m_pos.y - offset_percent * (m_size.y - h), 0))
+        * glm::scale(glm::vec3(pr, h, 1)) 
+        * glm::translate(glm::vec3(.5, .5, 0))
+    );
+    ShaderManager::u_vec4(kShaderUniform::Col, { .3, .3, .3, 1 });
+    m_plane.draw_fill();
+}
+
 kEventResult NodeScroll::handle_event(Event* e)
 {
     NodeBorder::handle_event(e);
@@ -37,12 +64,14 @@ kEventResult NodeScroll::handle_event(Event* e)
         m_dragging = true;
         m_drag_start = me->m_pos;
         m_offset_start = m_offset;
+        // if click on the scroll area use scrolling direction, otherwise natural
+        m_scroll_dir = me->m_pos.x > (m_size.x - YGNodeLayoutGetPadding(y_node, YGEdgeRight) + 5) ? -1 : 1;
         mouse_capture();
         break;
     case kEventType::MouseMove:
         if (m_dragging)
         {
-            m_offset = m_offset_start + (me->m_pos - m_drag_start) * m_mask;
+            m_offset = m_offset_start + (me->m_pos - m_drag_start) * m_mask * m_scroll_dir;
             fix_scroll();
         }
         break;
diff --git a/src/node_scroll.h b/src/node_scroll.h
index 53d6d09..69d1baa 100644
--- a/src/node_scroll.h
+++ b/src/node_scroll.h
@@ -4,6 +4,7 @@
 class NodeScroll : public NodeBorder
 {
     bool m_dragging = false;
+    float m_scroll_dir = 1.f;
     glm::vec2 m_drag_start = glm::vec2(0);
     glm::vec2 m_offset_start = glm::vec2(0);
     glm::vec2 m_offset = glm::vec2(0);
@@ -12,5 +13,7 @@ public:
     NodeScroll();
     virtual Node* clone_instantiate() const override;
     virtual kEventResult handle_event(Event* e) override;
+    virtual void draw() override;
+    virtual void handle_resize(glm::vec2 old_size, glm::vec2 new_size) override;
     void fix_scroll();
 };