From 143a88ac1d453a171049c51c601330020216ea8c Mon Sep 17 00:00:00 2001
From: Krzosa Karol <krzosa.karol@gmail.com>
Date: Thu, 4 Jul 2024 10:02:51 +0200
Subject: [PATCH] String coloring

---
 src/text_editor/layout.cpp |  7 ++++-
 src/text_editor/main.cpp   | 52 +++++++++++++++++++++++++++++---------
 2 files changed, 46 insertions(+), 13 deletions(-)

diff --git a/src/text_editor/layout.cpp b/src/text_editor/layout.cpp
index 47caa04..285c195 100644
--- a/src/text_editor/layout.cpp
+++ b/src/text_editor/layout.cpp
@@ -30,7 +30,12 @@ struct History {
 
 struct ColoredString {
     Range range;
-    Color color;
+    Color text_color;
+    Color highlight_background_color;
+
+    uint8_t use_text_color;
+    uint8_t use_highlight_background_color;
+    uint8_t use_underline;
 };
 
 struct Window {
diff --git a/src/text_editor/main.cpp b/src/text_editor/main.cpp
index cc2ab6c..440375a 100644
--- a/src/text_editor/main.cpp
+++ b/src/text_editor/main.cpp
@@ -76,9 +76,9 @@ int main() {
 
     InitArena(&FrameArena);
     InitArena(&PermArena);
-    float font_size    = 64;
+    float font_size    = 14;
     float font_spacing = 1;
-    Font  font         = LoadFontEx("C:/Windows/Fonts/times.ttf", (int)font_size, NULL, 250);
+    Font  font         = LoadFontEx("C:/Windows/Fonts/consola.ttf", (int)font_size, NULL, 250);
 
     Array<Window> windows = {};
     {
@@ -434,7 +434,20 @@ int main() {
                 String  s          = GetString(focused_window->buffer);
                 while (Seek(s, seek, &index)) {
                     Range range = {base_index + index, base_index + index + seek.len};
-                    focused_window->colored_strings.add({range, RED});
+
+                    ColoredString colored  = {};
+                    colored.range          = range;
+                    colored.use_text_color = true;
+                    colored.use_underline  = true;
+                    colored.text_color     = RED;
+                    focused_window->colored_strings.add(colored);
+
+                    colored                                = {};
+                    colored.range                          = range;
+                    colored.use_highlight_background_color = true;
+                    colored.highlight_background_color     = {0, 50, 150, 50};
+                    focused_window->colored_strings.add(colored);
+
                     base_index += index + seek.len;
                     s = s.skip(index + seek.len);
                 }
@@ -649,20 +662,35 @@ int main() {
             ForItem(col, visible_columns) {
                 Rect2 rect = {col.rect.min + window.rect.min - window.scroll, col.rect.max + window.rect.min - window.scroll};
 
-                Color color = BLACK;
-                For(window.colored_strings) {
-                    if (InRange(col.pos, it.range)) {
-                        color = it.color;
-                        break;
-                    }
-                }
-
                 if (col.codepoint == '\n') {
                     DrawTextEx(font, "\\n", rect.min, font_size, font_spacing, GRAY);
                 } else if (col.codepoint == '\0') {
                     DrawTextEx(font, "\\0", rect.min, font_size, font_spacing, {255, 0, 0, 150});
                 } else if ((col.codepoint != ' ') && (col.codepoint != '\t')) {
-                    DrawTextCodepoint(font, col.codepoint, rect.min, font_size, color);
+
+                    bool  underline       = false;
+                    bool  highlight       = false;
+                    Color highlight_color = MAGENTA;
+                    Color text_color      = BLACK;
+
+                    For(window.colored_strings) {
+                        if (InRange(col.pos, it.range)) {
+                            if (it.use_underline) underline = true;
+                            if (it.use_text_color) text_color = it.text_color;
+                            if (it.use_highlight_background_color) {
+                                highlight       = true;
+                                highlight_color = it.highlight_background_color;
+                            }
+                        }
+                    }
+
+                    if (highlight) DrawRectangleRec(ToRectangle(rect), highlight_color);
+                    DrawTextCodepoint(font, col.codepoint, rect.min, font_size, text_color);
+                    if (underline) {
+                        Rect2 rect_copy = rect;
+                        Rect2 r         = CutBottom(&rect_copy, 1) - Vec2{0, window.font_size * 0.1f};
+                        DrawRectangleRec(ToRectangle(r), text_color);
+                    }
                 }
             }