From 4277763df5c1dac8ff389d3bfd138f03acc7f1e2 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Mon, 28 Sep 2020 13:32:34 +0200
Subject: Implement text editing with navigation and multilingual fonts

---
 include/Body.hpp        |  6 ++++--
 include/Entry.hpp       | 37 +++++++++++++++++++++++++++++++++++++
 include/ImageViewer.hpp |  7 +++++--
 include/SearchBar.hpp   |  9 +++++++--
 include/Text.hpp        | 30 +++++++++++++++++++++---------
 5 files changed, 74 insertions(+), 15 deletions(-)
 create mode 100644 include/Entry.hpp

(limited to 'include')

diff --git a/include/Body.hpp b/include/Body.hpp
index 35b3f30..a5c346e 100644
--- a/include/Body.hpp
+++ b/include/Body.hpp
@@ -1,10 +1,8 @@
 #pragma once
 
 #include "Text.hpp"
-#include <SFML/Graphics/Font.hpp>
 #include <SFML/Graphics/Text.hpp>
 #include <SFML/Graphics/Texture.hpp>
-#include <SFML/Graphics/RenderWindow.hpp>
 #include <SFML/Graphics/RectangleShape.hpp>
 #include <SFML/Graphics/Sprite.hpp>
 #include "../external/RoundedRectangleShape.hpp"
@@ -12,6 +10,10 @@
 #include <thread>
 #include <future>
 
+namespace sf {
+    class RenderWindow;
+}
+
 namespace QuickMedia {
     class Program;
 
diff --git a/include/Entry.hpp b/include/Entry.hpp
new file mode 100644
index 0000000..6f96e58
--- /dev/null
+++ b/include/Entry.hpp
@@ -0,0 +1,37 @@
+#pragma once
+
+#include "Text.hpp"
+#include "../external/RoundedRectangleShape.hpp"
+#include <SFML/Graphics/Text.hpp>
+#include <functional>
+
+namespace sf {
+    class Font;
+    class Event;
+    class RenderWindow;
+}
+
+namespace QuickMedia {
+    // Return true to clear the text
+    using OnEntrySubmit = std::function<bool(const sf::String& text)>;
+
+    class Entry {
+    public:
+        Entry(const std::string &placeholder_text, sf::Font *font, sf::Font *cjk_font);
+        void process_event(sf::Event &event);
+        void draw(sf::RenderWindow &window);
+
+        void set_editable(bool editable);
+        void set_position(const sf::Vector2f &pos);
+        void set_max_width(float width);
+
+        float get_height();
+
+        OnEntrySubmit on_submit_callback;
+    private:
+        Text text;
+        float width;
+        sf::RoundedRectangleShape background;
+        sf::Text placeholder;
+    };
+}
\ No newline at end of file
diff --git a/include/ImageViewer.hpp b/include/ImageViewer.hpp
index fe0b6f3..b8063ee 100644
--- a/include/ImageViewer.hpp
+++ b/include/ImageViewer.hpp
@@ -3,14 +3,17 @@
 #include "Path.hpp"
 #include <string>
 #include <vector>
-#include <SFML/Graphics/RenderWindow.hpp>
 #include <SFML/Graphics/Texture.hpp>
 #include <SFML/Graphics/Sprite.hpp>
-#include <SFML/Graphics/Font.hpp>
 #include <SFML/Graphics/Text.hpp>
 #include <SFML/System/Clock.hpp>
+#include <SFML/Window/Cursor.hpp>
 #include <thread>
 
+namespace sf {
+    class RenderWindow;
+}
+
 namespace QuickMedia {
     class Manga;
 
diff --git a/include/SearchBar.hpp b/include/SearchBar.hpp
index a90c69d..8a1a8a0 100644
--- a/include/SearchBar.hpp
+++ b/include/SearchBar.hpp
@@ -1,13 +1,18 @@
 #pragma once
 
-#include <SFML/Graphics/RenderWindow.hpp>
-#include <SFML/Graphics/Font.hpp>
 #include <SFML/Graphics/Text.hpp>
 #include <SFML/Graphics/RectangleShape.hpp>
 #include <SFML/Graphics/Sprite.hpp>
+#include <SFML/System/Clock.hpp>
 #include "../external/RoundedRectangleShape.hpp"
 #include <functional>
 
+namespace sf {
+    class Font;
+    class RenderWindow;
+    class Event;
+}
+
 namespace QuickMedia {
     using TextUpdateCallback = std::function<void(const sf::String &text)>;
     // Return true to consume the search (clear the search field)
diff --git a/include/Text.hpp b/include/Text.hpp
index bc6f7ab..d34fd47 100644
--- a/include/Text.hpp
+++ b/include/Text.hpp
@@ -1,15 +1,18 @@
 #pragma once
 
 #include <SFML/Graphics/VertexArray.hpp>
-#include <SFML/Graphics/Font.hpp>
-#include <SFML/Graphics/RenderTarget.hpp>
-#include <SFML/Window/Event.hpp>
 #include <SFML/System/String.hpp>
 #include <SFML/System/Clock.hpp>
 #include <vector>
 #include "types.hpp"
 #include <assert.h>
 
+namespace sf {
+    class Font;
+    class Event;
+    class RenderTarget;
+}
+
 namespace QuickMedia
 {
     struct StringViewUtf32 {
@@ -69,6 +72,7 @@ namespace QuickMedia
         void setLineSpacing(float lineSpacing);
         void setCharacterSpacing(float characterSpacing);
         void setEditable(bool editable);
+        bool isEditable() const;
 
         // Note: won't update until @draw is called
         float getWidth() const;
@@ -92,21 +96,27 @@ namespace QuickMedia
             HOME,
             END
         };
-        
-#if 0
+
+        struct VertexRef {
+            int vertices_index;     // index to |vertices| VertexArray
+            int index;              // index within vertices[vertices_index]
+            int line;
+            sf::Uint32 codepoint;
+        };
+
         void updateCaret();
-        bool isCaretAtEnd() const;
         int getStartOfLine(int startIndex) const;
         int getEndOfLine(int startIndex) const;
-        int getRowByPosition(const sf::Vector2f &position) const;
         
         int getPreviousLineClosestPosition(int startIndex) const;
         int getNextLineClosestPosition(int startIndex) const;
-#endif
 
         void splitTextByFont();
+
+        float get_text_quad_left_side(const VertexRef &vertex_ref) const;
+        float get_text_quad_right_side(const VertexRef &vertex_ref) const;
     private:
-        sf::String str;
+        sf::String str; // TODO: Remove this for non-editable text???
         const sf::Font *font;
         const sf::Font *cjk_font;
         unsigned int characterSize;
@@ -131,5 +141,7 @@ namespace QuickMedia
         sf::Vector2f caretPosition;
         sf::Clock lastSeenTimer;
         sf::Vector2u renderTargetSize;
+
+        std::vector<VertexRef> vertices_linear; // TODO: Use textElements instead
     };
 }
-- 
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