Landscape keyboard UI

app/src/main/java/org/solovyev/android/calculator/KeyboardUi.java

@@ -62,7 +62,50 @@ public class KeyboardUi {
         buttonBackground = App.getTheme().light ? R.drawable.material_button_light : R.drawable.material_button_dark;
     }
 
-    public void makeView() {
+    public void makeView(boolean landscape) {
+        if (landscape) {
+            makeViewLand();
+        } else {
+            makeViewPort();
+        }
+    }
+
+    private void makeViewLand() {
+        final int parametersCount = parameterNames.size();
+
+        LinearLayout row = makeRow();
+        addImageButton(row, R.id.cpp_kb_button_keyboard, R.drawable.ic_keyboard_white_24dp);
+        addButton(row, 0, parametersCount > 0 ? parameterNames.get(0) : "x");
+        addButton(row, 0, "7");
+        addButton(row, 0, "8");
+        addButton(row, 0, "9").setText("π", up).setText("e", down);
+        addOperationButton(row, R.id.cpp_kb_button_multiply, Locator.getInstance().getEngine().getMultiplicationSign()).setText("^n", up).setText("^2", down);
+        addOperationButton(row, R.id.cpp_kb_button_plus, "+");
+        addButton(row, R.id.cpp_kb_button_clear, "C");
+
+        row = makeRow();
+        addButton(row, R.id.cpp_kb_button_brackets, "( )").setText("(", up).setText(")", down);
+        addButton(row, 0, parametersCount > 1 ? parameterNames.get(1) : "y");
+        addButton(row, 0, "4");
+        addButton(row, 0, "5");
+        addButton(row, 0, "6");
+        addOperationButton(row, R.id.cpp_kb_button_divide, "/").setText("%", up).setText("sqrt", down);
+        addOperationButton(row, R.id.cpp_kb_button_minus, "−");
+        final View backspace = addImageButton(row, R.id.cpp_kb_button_backspace, R.drawable.ic_backspace_white_24dp);
+        EditTextLongClickEraser.attachTo(backspace, user.getEditor());
+
+        row = makeRow();
+        addButton(row, R.id.cpp_kb_button_functions_constants, "f/π");
+        addButton(row, 0, ".").setText(",", up);
+        addButton(row, 0, "1");
+        addButton(row, 0, "2");
+        addButton(row, 0, "3");
+        addButton(row, 0, "0").setText("00", up).setText("000", down);
+        addImageButton(row, R.id.cpp_kb_button_space, R.drawable.ic_space_bar_white_24dp);
+        addImageButton(row, R.id.cpp_kb_button_close, R.drawable.ic_done_white_24dp);
+    }
+
+    private void makeViewPort() {
         LinearLayout row = makeRow();
         addButton(row, 0, "7");
         addButton(row, 0, "8");
@@ -96,7 +139,7 @@ public class KeyboardUi {
         final int parametersCount = parameterNames.size();
         addButton(row, 0, parametersCount > 0 ? parameterNames.get(0) : "x");
         addButton(row, 0, parametersCount > 1 ? parameterNames.get(1) : "y");
-        addButton(row, R.id.cpp_kb_button_functions, "f(x)");
+        addButton(row, R.id.cpp_kb_button_functions, "f");
         addButton(row, R.id.cpp_kb_button_constants, "π");
         addImageButton(row, R.id.cpp_kb_button_close, R.drawable.ic_done_white_24dp);
     }
@@ -169,6 +212,14 @@ public class KeyboardUi {
         return button;
     }
 
+    public int getRowsCount(boolean landscape) {
+        return landscape ? 3 : 5;
+    }
+
+    public int getColumnsCount(boolean landscape) {
+        return landscape ? 8 : 5;
+    }
+
     public interface User {
         @NonNull
         Context getContext();
@@ -195,6 +246,8 @@ public class KeyboardUi {
         void done();
 
         void showIme();
+
+        void showFunctionsConstants(@NonNull View v);
     }
 
     private class ButtonHandler implements View.OnClickListener, SimpleDragListener.DragProcessor {
@@ -213,6 +266,9 @@ public class KeyboardUi {
                 case R.id.cpp_kb_button_multiply:
                     user.insertOperator('*');
                     break;
+                case R.id.cpp_kb_button_functions_constants:
+                    user.showFunctionsConstants(v);
+                    break;
                 case R.id.cpp_kb_button_functions:
                     user.showFunctions(v);
                     break;

app/src/main/java/org/solovyev/android/calculator/KeyboardWindow.java

@@ -2,6 +2,8 @@ package org.solovyev.android.calculator;
 
 import android.app.Dialog;
 import android.content.Context;
+import android.content.res.Configuration;
+import android.content.res.Resources;
 import android.os.IBinder;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
@@ -53,9 +55,15 @@ public class KeyboardWindow {
         final Context context = editor.getContext();
         final LinearLayout view = new LinearLayout(context);
         view.setOrientation(LinearLayout.VERTICAL);
-        final int buttonSize = context.getResources().getDimensionPixelSize(R.dimen.cpp_clickable_area_size);
+
-        final int keyboardSize = 5 * buttonSize;
+        final Resources resources = context.getResources();
-        window = new PopupWindow(view, keyboardSize, keyboardSize);
+        final int buttonSize = resources.getDimensionPixelSize(R.dimen.cpp_clickable_area_size);
+        final KeyboardUi keyboardUi = new KeyboardUi(user, parameterNames);
+        final boolean landscape = resources.getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE;
+        final int keyboardWidth = keyboardUi.getColumnsCount(landscape) * buttonSize;
+        final int keyboardHeight = keyboardUi.getRowsCount(landscape) * buttonSize;
+
+        window = new PopupWindow(view, keyboardWidth, keyboardHeight);
         window.setClippingEnabled(false);
         window.setOnDismissListener(new PopupWindow.OnDismissListener() {
             @Override
@@ -73,15 +81,15 @@ public class KeyboardWindow {
                 if (editor.getWindowToken() != null) {
                     hideIme(editor);
                     final int inputWidth = editor.getWidth();
-                    final int xOff = (inputWidth - keyboardSize) / 2;
+                    final int xOff = (inputWidth - keyboardWidth) / 2;
-                    window.setWidth(keyboardSize);
+                    window.setWidth(keyboardWidth);
                     window.showAsDropDown(editor, xOff, 0);
                 } else {
                     editor.postDelayed(this, 50);
                 }
             }
         });
-        new KeyboardUi(user, parameterNames).makeView();
+        keyboardUi.makeView(landscape);
     }
 
     public boolean isShown() {

app/src/main/java/org/solovyev/android/calculator/function/EditFunctionFragment.java

@@ -64,6 +64,7 @@ public class EditFunctionFragment extends BaseDialogFragment implements View.OnC
     private static final String ARG_FUNCTION = "function";
     private static final int MENU_FUNCTION = Menu.FIRST;
     private static final int MENU_CONSTANT = Menu.FIRST + 1;
+    private static final int MENU_CATEGORY = Menu.FIRST + 2;
 
     @NonNull
     private final MathRegistry<Function> functionsRegistry = Locator.getInstance().getEngine().getFunctionsRegistry();
@@ -456,10 +457,7 @@ public class EditFunctionFragment extends BaseDialogFragment implements View.OnC
                 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
                     final int id = v.getId();
                     if (id == R.id.function_body) {
-                        menu.clear();
+                        addEntities(menu, getNamesSorted(constantsRegistry), MENU_CONSTANT);
-                        for (String constant : getNamesSorted(constantsRegistry)) {
-                            menu.add(MENU_CONSTANT, Menu.NONE, Menu.NONE, constant).setOnMenuItemClickListener(KeyboardUser.this);
-                        }
                         unregisterForContextMenu(bodyView);
                     }
                 }
@@ -481,10 +479,30 @@ public class EditFunctionFragment extends BaseDialogFragment implements View.OnC
                 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
                     final int id = v.getId();
                     if (id == R.id.function_body) {
-                        menu.clear();
+                        addEntities(menu, getNamesSorted(functionsRegistry), MENU_FUNCTION);
-                        for (String function : getNamesSorted(functionsRegistry)) {
+                        unregisterForContextMenu(bodyView);
-                            menu.add(MENU_FUNCTION, Menu.NONE, Menu.NONE, function).setOnMenuItemClickListener(KeyboardUser.this);
                     }
+                }
+            });
+            bodyView.showContextMenu();
+        }
+
+        private void addEntities(@NonNull Menu menu, @NonNull List<String> entities, int groupId) {
+            for (String entity : entities) {
+                menu.add(groupId, Menu.NONE, Menu.NONE, entity).setOnMenuItemClickListener(KeyboardUser.this);
+            }
+        }
+
+        @Override
+        public void showFunctionsConstants(@NonNull View v) {
+            bodyView.setOnCreateContextMenuListener(new View.OnCreateContextMenuListener() {
+                @Override
+                public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
+                    final int id = v.getId();
+                    if (id == R.id.function_body) {
+                        // can't use sub-menus as AlertDialog doesn't support them
+                        menu.add(MENU_CATEGORY, MENU_CONSTANT, Menu.NONE, R.string.c_vars_and_constants).setOnMenuItemClickListener(KeyboardUser.this);
+                        menu.add(MENU_CATEGORY, MENU_FUNCTION, Menu.NONE, R.string.c_functions).setOnMenuItemClickListener(KeyboardUser.this);
                         unregisterForContextMenu(bodyView);
                     }
                 }
@@ -522,22 +540,35 @@ public class EditFunctionFragment extends BaseDialogFragment implements View.OnC
         }
 
         @Override
-        public boolean onMenuItemClick(MenuItem item) {
+        public boolean onMenuItemClick(final MenuItem item) {
             final int groupId = item.getGroupId();
             final CharSequence title = item.getTitle();
-            if (groupId == MENU_FUNCTION) {
+            switch (groupId) {
+                case MENU_FUNCTION:
                     final int argsListIndex = title.toString().indexOf("(");
                     if (argsListIndex < 0) {
                         keyboardUser.insertText(title + "()", -1);
                     } else {
                         keyboardUser.insertText(title.subSequence(0, argsListIndex) + "()", -1);
                     }
-            } else if (groupId == MENU_CONSTANT) {
-                keyboardUser.insertText(title.toString(), 0);
-            } else {
-                return false;
-            }
                     return true;
+                case MENU_CONSTANT:
+                    keyboardUser.insertText(title.toString(), 0);
+                    return true;
+                case MENU_CATEGORY:
+                    bodyView.post(new Runnable() {
+                        @Override
+                        public void run() {
+                            if (item.getItemId() == MENU_FUNCTION) {
+                                showFunctions(bodyView);
+                            } else {
+                                showConstants(bodyView);
+                            }
+                        }
+                    });
+                    return true;
+            }
+            return false;
         }
     }
 }

app/src/main/res/values/ids.xml

@@ -70,6 +70,7 @@
     <item name="cpp_kb_button_minus" type="id" />
     <item name="cpp_kb_button_keyboard" type="id" />
     <item name="cpp_kb_button_functions" type="id" />
+    <item name="cpp_kb_button_functions_constants" type="id" />
     <item name="cpp_kb_button_constants" type="id" />
     <item name="cpp_kb_button_close" type="id" />