From b2c027fa83fea660446f338c731201da76c49dca Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Wed, 22 May 2019 21:33:02 +0200
Subject: Implement Fl_Quartz_Copy_Surface_Driver::draw_decorated_window()

The window title is copied in vectorial form when the titlebar is layer-backed.
---
 src/Fl_Copy_Surface.cxx                              |  9 +++++++++
 src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.H   |  1 +
 src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.cxx | 17 +++++++++++++++++
 3 files changed, 27 insertions(+)

(limited to 'src')

diff --git a/src/Fl_Copy_Surface.cxx b/src/Fl_Copy_Surface.cxx
index 53881c62e..011d0f06d 100644
--- a/src/Fl_Copy_Surface.cxx
+++ b/src/Fl_Copy_Surface.cxx
@@ -63,6 +63,10 @@ int Fl_Copy_Surface::printable_rect(int *w, int *h)  {
   return 1;
 }
 
+void Fl_Copy_Surface::draw_decorated_window(Fl_Window *win, int x_offset, int y_offset) {
+  if (platform_surface) platform_surface->draw_decorated_window(win, x_offset, y_offset);
+}
+
 /**
  \cond DriverDev
  \addtogroup DriverDeveloper
@@ -72,6 +76,11 @@ int Fl_Copy_Surface_Driver::printable_rect(int *w, int *h) {
   *w = width; *h = height;
   return 0;
 }
+
+void Fl_Copy_Surface_Driver::draw_decorated_window(Fl_Window *win, int x_offset, int y_offset) {
+  Fl_Widget_Surface::draw_decorated_window(win, x_offset, y_offset);
+}
+
 /**
  \}
  \endcond
diff --git a/src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.H b/src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.H
index 37751419b..938600dac 100644
--- a/src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.H
+++ b/src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.H
@@ -37,6 +37,7 @@ protected:
   void set_current();
   void translate(int x, int y);
   void untranslate();
+  virtual void draw_decorated_window(Fl_Window *win, int x_offset, int y_offset);
 };
 
 #endif /* Fl_Quartz_Copy_Surface_Driver_H */
diff --git a/src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.cxx b/src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.cxx
index 4fe51c513..b5d09344f 100644
--- a/src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.cxx
+++ b/src/drivers/Quartz/Fl_Quartz_Copy_Surface_Driver.cxx
@@ -23,6 +23,7 @@
 #include <FL/platform.H>
 #include "Fl_Quartz_Graphics_Driver.H"
 #include "Fl_Quartz_Copy_Surface_Driver.H"
+#include "../Cocoa/Fl_Cocoa_Window_Driver.H"
 
 /**
  \cond DriverDev
@@ -98,6 +99,22 @@ void Fl_Quartz_Copy_Surface_Driver::untranslate() {
   CGContextRestoreGState(gc);
 }
 
+void Fl_Quartz_Copy_Surface_Driver::draw_decorated_window(Fl_Window *win, int x_offset, int y_offset) {
+  CALayer *layer = Fl_Cocoa_Window_Driver::driver(win)->get_titlebar_layer();
+  if (!layer) {
+    return Fl_Widget_Surface::draw_decorated_window(win, x_offset, y_offset);
+  }
+  CGContextRef gc = (CGContextRef)driver()->gc();
+  CGContextSaveGState(gc);
+  int bt = win->decorated_h() - win->h();
+  CGContextTranslateCTM(gc, x_offset - 0.5, y_offset + bt - 0.5);
+  float s = Fl::screen_scale(win->screen_num());
+  CGContextScaleCTM(gc, 1/s, s >= 1 ? -1/s : -1);
+  Fl_Cocoa_Window_Driver::draw_layer_to_context(layer, gc, win->w() * s, bt);
+  CGContextRestoreGState(gc);  
+  draw(win, x_offset, y_offset + bt); // print the window inner part
+}
+
 #endif // FL_CFG_GFX_QUARTZ
 
 //
-- 
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