Add Keyboard input and enter support for text editor.

src/ui_elements/desktop_elements/Keyboard.cpp

@@ -10,3 +10,13 @@ std::unique_ptr<Keyboard> Keyboard::Create()
     return std::make_unique<Keyboard>();
 }
 
+std::string Keyboard::getKeyString(KeyCode code)
+{
+    return "";
+}
+
+Keyboard::Function Keyboard::getFunction(KeyCode code)
+{
+    return Function::UNSET;
+}
+

src/ui_elements/desktop_elements/Keyboard.h

@@ -6,6 +6,15 @@
 class Keyboard
 {
 public:
+
+    enum class Function
+    {
+        UNSET,
+        ENTER,
+        BACKSPACE,
+        TAB
+    };
+
     using KeyCode = unsigned;
     using KeyState = unsigned;
 
@@ -16,10 +25,10 @@ public:
 
     static std::unique_ptr<Keyboard> Create();
 
-    virtual std::string getKeyString(KeyCode code)
-    {
-        return "";
-    }
+    virtual std::string getKeyString(KeyCode code);
+
+    virtual Function getFunction(KeyCode code);
+
 };
 
 using KeyboardUPtr = std::unique_ptr<Keyboard>;

src/ui_elements/ui_events/KeyboardEvent.cpp

@@ -18,22 +18,37 @@ std::unique_ptr<KeyboardEvent> KeyboardEvent::Create()
     return std::make_unique<KeyboardEvent>();
 }
 
-void KeyboardEvent::SetKeyString(const std::string& key)
+void KeyboardEvent::setKeyString(const std::string& key)
 {
     mKeyString = key;
 }
 
-std::string KeyboardEvent::GetKeyString() const
+std::string KeyboardEvent::getKeyString() const
 {
     return mKeyString;
 }
 
-void KeyboardEvent::SetAction(Action action)
+void KeyboardEvent::setAction(Action action)
 {
     mAction = action;
 }
 
-KeyboardEvent::Action KeyboardEvent::GetAction() const
+KeyboardEvent::Action KeyboardEvent::getAction() const
 {
     return mAction;
 }
+
+bool KeyboardEvent::isFunctionKey() const
+{
+    return mFunction != Keyboard::Function::UNSET;
+}
+
+Keyboard::Function KeyboardEvent::getFunction() const
+{
+    return mFunction;
+}
+
+void KeyboardEvent::setFunction(Keyboard::Function function)
+{
+    mFunction = function;
+}

src/ui_elements/ui_events/KeyboardEvent.h

@@ -4,6 +4,7 @@
 #include <string>
 
 #include "UiEvent.h"
+#include "Keyboard.h"
 
 class KeyboardEvent : public UiEvent
 {
@@ -14,11 +15,6 @@ public:
         Released
     };
 
-private:
-
-    Action mAction;
-    std::string mKeyString;
-
 public:
 
     KeyboardEvent();
@@ -27,13 +23,25 @@ public:
 
     static std::unique_ptr<KeyboardEvent> Create();
 
-    void SetKeyString(const std::string& key);
+    void setKeyString(const std::string& key);
 
-    std::string GetKeyString() const;
+    std::string getKeyString() const;
 
-    void SetAction(Action action);
+    void setAction(Action action);
 
-    Action GetAction() const;
+    Action getAction() const;
+
+    bool isFunctionKey() const;
+
+    Keyboard::Function getFunction() const;
+
+    void setFunction(Keyboard::Function function);
+
+private:
+
+    Keyboard::Function mFunction{Keyboard::Function::UNSET};
+    Action mAction;
+    std::string mKeyString;
 
 };
 using KeyboardEventUPtr = std::unique_ptr<KeyboardEvent>;

src/ui_elements/widgets/Button.cpp

@@ -75,12 +75,16 @@ void Button::updateLabel(const PaintEvent* event)
         mTextNode = TextNode::Create(mLabel, middle);
         mTextNode->setName(mName + "_TextNode");
         mTextNode->setContent(mLabel);
+        mTextNode->setWidth(mSize.mWidth);
+        mTextNode->setHeight(mSize.mHeight);
         mRootNode->addChild(mTextNode.get());
     }
 
     if (mTransformDirty)
     {
         mTextNode->setLocation(middle);
+        mTextNode->setWidth(mSize.mWidth);
+        mTextNode->setHeight(mSize.mHeight);
     }
 
     if (mMaterialDirty)

src/ui_elements/widgets/Label.cpp

@@ -44,6 +44,8 @@ void Label::updateLabel(const PaintEvent* event)
     if (!mTextNode)
     {
         mTextNode = TextNode::Create(mLabel, middle);
+        mTextNode->setWidth(mSize.mWidth);
+        mTextNode->setHeight(mSize.mHeight);
         mRootNode->addChild(mTextNode.get());
     }
 
@@ -55,6 +57,8 @@ void Label::updateLabel(const PaintEvent* event)
     if (mTransformDirty)
     {
         mTextNode->setLocation(middle);
+        mTextNode->setWidth(mSize.mWidth);
+        mTextNode->setHeight(mSize.mHeight);
     }
 
     if (mContentDirty)

src/ui_elements/widgets/TextBox.cpp

@@ -13,7 +13,7 @@ TextBox::TextBox()
       mCaps(false)
 {
     mBackgroundColor = Color(250, 250, 250);
-    mPadding = {10, 0, 10, 0};
+    mPadding = {20, 0, 20, 0};
 }
 
 std::unique_ptr<TextBox> TextBox::Create()
@@ -40,72 +40,28 @@ void TextBox::appendContent(const std::string& text)
 
 bool TextBox::onMyKeyboardEvent(const KeyboardEvent* event)
 {
-    if(!event) return false;
+    if(!event or !mVisible) return false;
 
-    const auto keyString = event->GetKeyString();
-    if (keyString == "KEY_RETURN")
+    if(event->isFunctionKey())
     {
-        appendContent("\n");
-    }
-    else if (keyString == "KEY_BACK")
-    {
-        mContent = mContent.substr(0, mContent.size()-1);
-    }
-    else if (keyString == "KEY_SPACE")
-    {
-        appendContent(" ");
-    }
-    else if (keyString == "KEY_CAPS")
-    {
-        mCaps = !mCaps;
+        if (event->getFunction() == Keyboard::Function::ENTER)
+        {
+            appendContent("\n");
+        }
+        else if(event->getFunction() == Keyboard::Function::BACKSPACE)
+        {
+            mContent = mContent.substr(0, mContent.size()-1);
+            mContentDirty = true;
+        }
     }
     else
     {
-        if (mCaps && !keyString.empty())
-        {
-            const char c = std::toupper(keyString[0]);
-            appendContent(std::string(&c));
-        }
-        else
-        {
-            appendContent(keyString);
-        }
+        const auto keyString = event->getKeyString();
+        appendContent(keyString);
     }
     return true;
 }
 
-/*
-void TextBox::onPaintEvent(const PaintEvent* event)
-{
-    mMyLayers.clear();
-    addBackground(event);
-
-    double offset = 0;
-    if(!mContent.empty())
-    {
-        std::stringstream stream(mContent);
-        std::string segment;
-        std::vector<std::string> seglist;
-        while(std::getline(stream, segment, '\n'))
-        {
-           seglist.push_back(segment);
-        }
-        for(const auto& line : seglist)
-        {
-            auto loc = DiscretePoint(mLocation.GetX() + mPadding.mLeft,
-                    mLocation.GetY() + mPadding.mTop + unsigned(offset));
-            auto textLayer = VisualLayer::Create();
-            auto textElement = TextNode::Create(line, loc);
-            textElement->setFillColor(mBackgroundColor);
-            textLayer->setTextNode(std::move(textElement));
-            mMyLayers.push_back(std::move(textLayer));
-            offset += 20;
-        }
-    }
-    addMyLayers();
-}
-*/
-
 bool TextBox::isDirty() const
 {
     return Widget::isDirty() || mContentDirty;
@@ -119,12 +75,13 @@ void TextBox::doPaint(const PaintEvent* event)
 
 void TextBox::updateLabel(const PaintEvent* event)
 {
-    unsigned fontOffset = unsigned(mContent.size()) * 4;
-    auto middle = DiscretePoint(mLocation.GetX() + mSize.mWidth/2 - fontOffset, mLocation.GetY() + mSize.mHeight/2 + 4);
+    auto loc = DiscretePoint(mLocation.GetX() + mPadding.mLeft, mLocation.GetY() + mPadding.mTop + unsigned(0));
 
     if (!mTextNode)
     {
-        mTextNode = TextNode::Create(mContent, middle);
+        mTextNode = TextNode::Create(mContent, loc);
+        mTextNode->setWidth(mSize.mWidth);
+        mTextNode->setHeight(mSize.mHeight);
         mRootNode->addChild(mTextNode.get());
     }
 
@@ -133,6 +90,13 @@ void TextBox::updateLabel(const PaintEvent* event)
         mTextNode->setFillColor(mBackgroundColor);
     }
 
+    if (mTransformDirty)
+    {
+        mTextNode->setLocation(loc);
+        mTextNode->setWidth(mSize.mWidth);
+        mTextNode->setHeight(mSize.mHeight);
+    }
+
     if (mContentDirty)
     {
         mTextNode->setContent(mContent);

src/ui_elements/widgets/Widget.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "DiscretePoint.h"
+#include "FontItem.h"
 #include "Color.h"
 
 #include <memory>
@@ -149,6 +150,8 @@ protected:
 
     std::string mName;
     std::vector<TransformNode*> mPendingChildNodes;
+
+    FontItem mDefaultFont;
 };
 
 using WidgetUPtr = std::unique_ptr<Widget>;