Mouse click add cursor

src/text_editor/buffer_helpers.cpp

@@ -59,6 +59,12 @@ Int GetBack(Caret caret) {
     return result;
 }
 
+Caret MakeCaret(Int pos) {
+    Caret result     = {};
+    result.range.min = result.range.max = pos;
+    return result;
+}
+
 Caret MakeCaret(Int front, Int back) {
     Caret result = {};
     if (front >= back) {

src/text_editor/view.cpp

@@ -5,6 +5,8 @@ struct View {
     float line_spacing;
     float char_spacing;
 
+    bool mouse_selecting;
+
     Vec2         scroll;
     Buffer      *buffer;
     Array<Caret> carets;
@@ -235,4 +237,33 @@ void HandleKeybindings(View *_view) {
         Int line_chars = GetCharCountOfLongestLine(view.buffer[0]);
         view.scroll.x  = Clamp(view.scroll.x, 0.f, Max(0.f, (line_chars - 2) * view.char_spacing));
     }
+
+    {
+        Vec2 mouse         = GetMousePosition();
+        bool mouse_in_view = CheckCollisionPointRec(mouse, ToRectangle(view.rect));
+        if (mouse_in_view && IsMouseButtonDown(MOUSE_BUTTON_LEFT)) {
+            Vec2 mworld = mouse - view.rect.min + view.scroll;
+            Vec2 pos    = mworld / Vec2{view.char_spacing, view.line_spacing};
+            XY   xy     = {(Int)(pos.x), (Int)(pos.y)};
+            Int  p      = XYToPos(buf, xy);
+
+            if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) {
+                if (!IsKeyDown(KEY_LEFT_CONTROL)) {
+                    view.carets.len = 0;
+                }
+                Add(&view.carets, MakeCaret(p, p));
+            } else if (IsMouseButtonDown(MOUSE_BUTTON_LEFT)) {
+                view.mouse_selecting = true;
+            }
+
+            if (view.mouse_selecting) {
+                if (!IsMouseButtonDown(MOUSE_BUTTON_LEFT)) view.mouse_selecting = false;
+                Caret &caret = *GetLast(view.carets);
+                caret        = ChangeFront(caret, p);
+            }
+            MergeCarets(&view.carets);
+        }
+
+        // Rect2 rect          = view.rect + view;
+    }
 }