Update raygui.h

* TAB_LINE_SIDE can put line on top side

* float boundary offset

src/raygui.h

@@ -723,11 +723,13 @@ typedef enum {
 } GuiComboBoxProperty;
 
 // DropdownBox
+// TODO: Support dropdown with scrollbar
 typedef enum {
     ARROW_PADDING = 16,         // DropdownBox arrow separation from border and items
     DROPDOWN_ITEMS_SPACING,     // DropdownBox items separation
     DROPDOWN_ARROW_HIDDEN,      // DropdownBox arrow hidden
-    DROPDOWN_ROLL_UP            // DropdownBox roll up flag: 0-Roll down, 1-Roll up
+    DROPDOWN_ROLL_UP,           // DropdownBox roll up flag: 0-Roll down, 1-Roll up
+    DROPDOWN_MAX_HEIGHT         // DropdownBox max height, using scrollbar if required, 0-No limit
 } GuiDropdownBoxProperty;
 
 // TextBox/TextBoxMulti/ValueBox/Spinner
@@ -1877,7 +1879,7 @@ int GuiScrollPanel(Rectangle bounds, const char *text, Rectangle content, Vector
     {
         // Move panel bounds after the header bar
         bounds.y += (float)RAYGUI_WINDOWBOX_STATUSBAR_HEIGHT - 1;
-        bounds.height -= (float)RAYGUI_WINDOWBOX_STATUSBAR_HEIGHT + 1;
+        bounds.height -= ((float)RAYGUI_WINDOWBOX_STATUSBAR_HEIGHT - 1);
     }
 
     bool hasHorizontalScrollBar = (content.width > bounds.width - 2*GuiGetStyle(DEFAULT, BORDER_WIDTH))? true : false;
@@ -1967,9 +1969,9 @@ int GuiScrollPanel(Rectangle bounds, const char *text, Rectangle content, Vector
 
     // Draw control
     //--------------------------------------------------------------------
-    if (text != NULL) result = GuiStatusBar(statusBar, text);  // Draw panel header as status bar
+    if (text != NULL) result = GuiStatusBar(statusBar, text); // Draw panel header as status bar
 
-    GuiDrawRectangle(bounds, 0, BLANK, GetColor(GuiGetStyle(DEFAULT, BACKGROUND_COLOR)));        // Draw background
+    GuiDrawRectangle(bounds, 0, BLANK, GetColor(GuiGetStyle(DEFAULT, BACKGROUND_COLOR))); // Draw background
 
     // Save size of the scrollbar slider
     const int slider = GuiGetStyle(SCROLLBAR, SCROLL_SLIDER_SIZE);
@@ -2697,7 +2699,7 @@ int GuiTextBox(Rectangle bounds, char *text, int textSize, bool editMode)
                     if (pasteLength > 0)
                     {
                         // Move forward data from cursor position
-                        for (int i = textLength + pasteLength; i > textBoxCursorIndex; i--) text[i] = text[i - pasteLength];
+                        for (int i = textLength + pasteLength; (i > textBoxCursorIndex) && (i < pasteLength); i--) text[i] = text[i - pasteLength];
 
                         // Paste data in at cursor
                         for (int i = 0; i < pasteLength; i++) text[textBoxCursorIndex + i] = pasteText[i];
@@ -3958,8 +3960,9 @@ int GuiTabBarEx(Rectangle bounds, char **text, int count, int *hscroll, int *act
         }
     }
 
-    // Draw tab-bar bottom line
+    // Draw tab-bar border line
-    GuiDrawRectangle(RAYGUI_CLITERAL(Rectangle){ bounds.x, bounds.y + bounds.height - 1, bounds.width, 1 }, 0, BLANK, GetColor(GuiGetStyle(TABBAR, BORDER_COLOR_NORMAL)));
+    float tabBorderOffset = (GuiGetStyle(TABBAR, TAB_LINE_SIDE) == 1)? 0 : (bounds.height - 1);
+    GuiDrawRectangle(RAYGUI_CLITERAL(Rectangle){ bounds.x, bounds.y + tabBorderOffset, bounds.width, 1 }, 0, BLANK, GetColor(GuiGetStyle(TABBAR, BORDER_COLOR_NORMAL)));
     //--------------------------------------------------------------------
 
     // NOTE: In case of tab close result, consider focused tab
@@ -5401,7 +5404,7 @@ static int GetLineWidth(const char *text)
 
         text += textIconOffset;
 
-        // WARNING: Make sure guiFont is set, 
+        // WARNING: Make sure guiFont is set,
         // GuiGetStyle() does a lazy initialization
         GuiGetStyle(DEFAULT, TEXT_SIZE);
 
@@ -5783,8 +5786,8 @@ static void GuiDrawRectangle(Rectangle rec, int borderWidth, Color borderColor,
 // TODO: Consider multiline text
 static Vector2 GuiMeasureText(const char *text)
 {
-    Vector2 size = { 0 };
+    Vector2 textSize = { 0 };
-    
+
     if ((guiFont.texture.id > 0) && (text != NULL))
     {
         // Get size in bytes of the line, considering end of line and line break
@@ -5810,8 +5813,8 @@ static Vector2 GuiMeasureText(const char *text)
             textSize.x += (glyphWidth + (float)GuiGetStyle(DEFAULT, TEXT_SPACING));
         }
     }
-    
+
-    return size;
+    return textSize;
 }
 
 // Draw tooltip using control bounds