Add chatbar. No mouse editing but keyboard editing is supported

5 files changed, 190 insertions, 3 deletions

diff --git a/include/Chatbar.hpp b/include/Chatbar.hpp
new file mode 100644
index 0000000..143ebba
--- /dev/null
+++ b/include/Chatbar.hpp
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <SFML/Graphics/Text.hpp>
+#include <SFML/Graphics/RenderWindow.hpp>
+#include <SFML/Graphics/RectangleShape.hpp>
+
+namespace dchat
+{
+    class Chatbar
+    {
+    public:
+        Chatbar();
+        
+        void addChar(sf::Uint32 codePoint);
+        const sf::String& getString() const;
+        void removePreviousChar();
+        void removeNextChar();
+        void clear();
+        
+        void moveCaretLeft();
+        void moveCaretRight();
+        
+        void draw(sf::RenderWindow &window);
+    private:
+        sf::Text text;
+        sf::RectangleShape background;
+        int caretIndex;
+        sf::Vector2f caretOffset;
+    };
+}
diff --git a/include/types.hpp b/include/types.hpp
new file mode 100644
index 0000000..762dab1
--- /dev/null
+++ b/include/types.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <cstdint>
+
+namespace dchat
+{
+	typedef int8_t i8;
+	typedef int16_t i16;
+	typedef int32_t i32;
+	typedef int64_t i64;
+
+	typedef uint8_t u8;
+	typedef uint16_t u16;
+	typedef uint32_t u32;
+	typedef uint64_t u64;
+
+	typedef float f32;
+	typedef double f64;
+
+	typedef intptr_t ssize;
+	typedef uintptr_t usize;
+}
diff --git a/src/Chatbar.cpp b/src/Chatbar.cpp
new file mode 100644
index 0000000..14edba7
--- /dev/null
+++ b/src/Chatbar.cpp
@@ -0,0 +1,96 @@
+#include "../include/Chatbar.hpp"
+#include "../include/ResourceCache.hpp"
+#include "../include/Settings.hpp"
+#include <cmath>
+
+using namespace std;
+
+namespace dchat
+{
+    const float FONT_SIZE = 24;
+    const float BOX_PADDING_X = 15.0f;
+    const float BOX_PADDING_Y = 5.0f;
+    
+    Chatbar::Chatbar() : 
+        text("", ResourceCache::getFont("fonts/Roboto-Regular.ttf"), FONT_SIZE * Settings::getScaling()),
+        caretIndex(0)
+    {
+        text.setFillColor(sf::Color(240, 240, 240));
+        background.setFillColor(sf::Color(60, 60, 60));
+    }
+    
+    void Chatbar::addChar(sf::Uint32 codePoint)
+    {
+        auto str = text.getString();
+        str.insert(caretIndex, codePoint);
+        text.setString(str);
+        ++caretIndex;
+        caretOffset = text.findCharacterPos(caretIndex) - text.getPosition();
+    }
+    
+    const sf::String& Chatbar::getString() const
+    {
+        return text.getString();
+    }
+    
+    void Chatbar::removePreviousChar()
+    {
+        if(caretIndex > 0)
+        {
+            auto str = text.getString();
+            str.erase(caretIndex - 1);
+            text.setString(str);
+            --caretIndex;
+            caretOffset = text.findCharacterPos(caretIndex) - text.getPosition();
+        }
+    }
+    
+    void Chatbar::removeNextChar()
+    {
+        if(caretIndex < text.getString().getSize())
+        {
+            auto str = text.getString();
+            str.erase(caretIndex);
+            text.setString(str);
+        }
+    }
+    
+    void Chatbar::clear()
+    {
+        text.setString("");
+        caretIndex = 0;
+        caretOffset.x = 0.0f;
+        caretOffset.y = 0.0f;
+    }
+    
+    void Chatbar::moveCaretLeft()
+    {
+        caretIndex = max(0, caretIndex - 1);
+        // TODO: Use glyph size to optimize this, no need to iterate all glyphs
+        caretOffset = text.findCharacterPos(caretIndex) - text.getPosition();
+    }
+    
+    void Chatbar::moveCaretRight()
+    {
+        caretIndex = min((int)text.getString().getSize(), caretIndex + 1);
+        caretOffset = text.findCharacterPos(caretIndex) - text.getPosition();
+    }
+    
+    void Chatbar::draw(sf::RenderWindow &window)
+    {
+        auto windowSize = window.getSize();
+        
+        sf::Vector2f backgroundSize(floor(windowSize.x * 0.7f), floor(text.getCharacterSize() * 1.7f + BOX_PADDING_Y * 2.0f));
+        sf::Vector2f backgroundPos(floor(windowSize.x * 0.5f - backgroundSize.x * 0.5f), floor(windowSize.y - backgroundSize.y - 20.0f));
+        background.setSize(backgroundSize);
+        background.setPosition(backgroundPos);
+        text.setPosition(floor(backgroundPos.x + BOX_PADDING_X), floor(backgroundPos.y + backgroundSize.y * 0.5f - text.getCharacterSize() * 0.5f));
+        
+        window.draw(background);
+        window.draw(text);
+        
+        sf::RectangleShape caretShape(sf::Vector2f(2.0f, backgroundSize.y - BOX_PADDING_Y * 2.0f));
+        caretShape.setPosition(floor(text.getPosition().x + caretOffset.x), backgroundPos.y + BOX_PADDING_Y);
+        window.draw(caretShape);
+    }
+}
diff --git a/src/MessagePart.cpp b/src/MessagePart.cpp
index 47c96bd..ea8e4a5 100644
--- a/src/MessagePart.cpp
+++ b/src/MessagePart.cpp
@@ -15,9 +15,9 @@ namespace dchat
     
     MessagePartText::MessagePartText(const string &_text) : 
         MessagePart(Type::TEXT),
-        text(_text, ResourceCache::getFont("fonts/Roboto-Regular.ttf"), MessagePartText::getFontSizeScaled())
+        text("", ResourceCache::getFont("fonts/Roboto-Regular.ttf"), MessagePartText::getFontSizeScaled())
     {
-        
+        text.setString(sf::String::fromUtf8(_text.begin(), _text.end()));
     }
     
     float MessagePartText::getFontSizeScaled()
diff --git a/src/main.cpp b/src/main.cpp
index 85f1075..481f73a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,7 +1,11 @@
-#include <SFML/Graphics.hpp>
 #include "../include/MessageBoard.hpp"
 #include "../include/User.hpp"
+#include "../include/Chatbar.hpp"
+#include <string>
+#include <SFML/Graphics.hpp>
+#include <cstring>
 
+using namespace std;
 using namespace dchat;
 
 int main()
@@ -31,6 +35,8 @@ int main()
         message->addText(u8"hello, world!");
         messageBoard.addMessage(message);
     }
+    
+    Chatbar chatbar;
 
     while (window.isOpen())
     {
@@ -44,11 +50,44 @@ int main()
                 sf::View view(sf::FloatRect(0.0f, 0.0f, event.size.width, event.size.height));
                 window.setView(view);
             }
+            else if(event.type == sf::Event::TextEntered)
+            {
+                if(event.text.unicode == 8) // backspace
+                    chatbar.removePreviousChar();
+                else if(event.text.unicode == 13) // enter
+                {
+                    Message *message = new Message(localOfflineUser);
+                    auto chatbarMsgUtf8 = chatbar.getString().toUtf8();
+                    string msg;
+                    msg.resize(chatbarMsgUtf8.size());
+                    memcpy(&msg[0], chatbarMsgUtf8.data(), chatbarMsgUtf8.size());
+                    
+                    message->addText(msg);
+                    messageBoard.addMessage(message);
+                    chatbar.clear();
+                }
+                else if(event.text.unicode == 127) // delete
+                {
+                    chatbar.removeNextChar();
+                }
+                else
+                {
+                    chatbar.addChar(event.text.unicode);
+                }
+            }
+            else if(event.type == sf::Event::KeyPressed)
+            {
+                if(event.key.code == sf::Keyboard::Left)
+                    chatbar.moveCaretLeft();
+                else if(event.key.code == sf::Keyboard::Right)
+                    chatbar.moveCaretRight();
+            }
             messageBoard.processEvent(event);
         }
 
         window.clear();
         messageBoard.draw(window);
+        chatbar.draw(window);
         window.display();
     }