Update raygui.h

Author: raysan5

examples/models/raygui.h

@@ -646,6 +646,7 @@ typedef enum {
 // ProgressBar
 typedef enum {
     PROGRESS_PADDING = 16,      // ProgressBar internal padding
+    PROGRESS_SIDE,              // ProgressBar increment side: 0-left->right, 1-right-left 
 } GuiProgressBarProperty;
 
 // ScrollBar
@@ -3522,7 +3523,15 @@ int GuiProgressBar(Rectangle bounds, const char *textLeft, const char *textRight
         }
 
         // Draw slider internal progress bar (depends on state)
-        GuiDrawRectangle(progress, 0, BLANK, GetColor(GuiGetStyle(PROGRESSBAR, BASE_COLOR_PRESSED)));
+        if (GuiGetStyle(PROGRESSBAR, PROGRESS_SIDE) == 0) // Left-->Right
+        {
+            GuiDrawRectangle(progress, 0, BLANK, GetColor(GuiGetStyle(PROGRESSBAR, BASE_COLOR_PRESSED)));
+        }
+        else // Right-->Left
+        {
+            progress.x = bounds.x + bounds.width - progress.width - GuiGetStyle(PROGRESSBAR, BORDER_WIDTH);
+            GuiDrawRectangle(progress, 0, BLANK, GetColor(GuiGetStyle(PROGRESSBAR, BASE_COLOR_PRESSED)));
+        }
     }
 
     // Draw left/right text if provided