From 9ba3889ae5a7054b4d75c0ccb0f54e16b9b99159 Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Mon, 21 Mar 2016 17:06:03 +0000
Subject: Implement Fl_Window::make_current() under the driver model.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11393 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/drivers/Cocoa/Fl_Cocoa_Window_Driver.H     |  1 +
 src/drivers/WinAPI/Fl_WinAPI_Window_Driver.H   |  1 +
 src/drivers/WinAPI/Fl_WinAPI_Window_Driver.cxx | 20 ++++++++++++++++++++
 src/drivers/X11/Fl_X11_Window_Driver.H         |  1 +
 src/drivers/X11/Fl_X11_Window_Driver.cxx       | 21 +++++++++++++++++++++
 5 files changed, 44 insertions(+)

(limited to 'src/drivers')

diff --git a/src/drivers/Cocoa/Fl_Cocoa_Window_Driver.H b/src/drivers/Cocoa/Fl_Cocoa_Window_Driver.H
index 025d1701a..5414401d0 100644
--- a/src/drivers/Cocoa/Fl_Cocoa_Window_Driver.H
+++ b/src/drivers/Cocoa/Fl_Cocoa_Window_Driver.H
@@ -73,6 +73,7 @@ public:
   virtual void flush_overlay();
   virtual void draw_begin();
   virtual void draw_end();
+  virtual void make_current();
 
   virtual void shape(const Fl_Image* img);
   // that one is implemented in Fl_Cocoa.mm because it uses Objective-c
diff --git a/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.H b/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.H
index 31f3b1db2..c7726d170 100644
--- a/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.H
+++ b/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.H
@@ -76,6 +76,7 @@ public:
   virtual void flush_double();
   virtual void flush_overlay();
   virtual void draw_begin();
+  virtual void make_current();
 
   virtual void shape(const Fl_Image* img);
   virtual void icons(const Fl_RGB_Image *icons[], int count);
diff --git a/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.cxx b/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.cxx
index 1de3046f3..f259b62ac 100644
--- a/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.cxx
+++ b/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.cxx
@@ -29,6 +29,11 @@
 #include "Fl_WinAPI_Window_Driver.H"
 #include <windows.h>
 
+#if USE_COLORMAP
+extern HPALETTE fl_select_palette(void); // in fl_color_win32.cxx
+#endif
+
+
 Fl_Window_Driver *Fl_Window_Driver::newWindowDriver(Fl_Window *w)
 {
   return new Fl_WinAPI_Window_Driver(w);
@@ -374,6 +379,21 @@ void Fl_WinAPI_Window_Driver::wait_for_expose() {
   }
 }
 
+
+void Fl_WinAPI_Window_Driver::make_current() {
+  fl_GetDC(fl_xid(pWindow));
+  
+#if USE_COLORMAP
+  // Windows maintains a hardware and software color palette; the
+  // SelectPalette() call updates the current soft->hard mapping
+  // for all drawing calls, so we must select it here before any
+  // code does any drawing...
+  fl_select_palette();
+#endif // USE_COLORMAP
+  
+  fl_graphics_driver->clip_region(0);
+}
+
 //
 // End of "$Id$".
 //
diff --git a/src/drivers/X11/Fl_X11_Window_Driver.H b/src/drivers/X11/Fl_X11_Window_Driver.H
index 642d6b72a..61d3d4073 100644
--- a/src/drivers/X11/Fl_X11_Window_Driver.H
+++ b/src/drivers/X11/Fl_X11_Window_Driver.H
@@ -81,6 +81,7 @@ public:
   virtual void flush_double();
   virtual void flush_overlay();
   virtual void draw_begin();
+  virtual void make_current();
 
   virtual void shape(const Fl_Image* img);
   virtual void icons(const Fl_RGB_Image *icons[], int count);
diff --git a/src/drivers/X11/Fl_X11_Window_Driver.cxx b/src/drivers/X11/Fl_X11_Window_Driver.cxx
index 0b35c8969..2fa295560 100644
--- a/src/drivers/X11/Fl_X11_Window_Driver.cxx
+++ b/src/drivers/X11/Fl_X11_Window_Driver.cxx
@@ -23,6 +23,7 @@
 #include <FL/Fl_Shared_Image.H>
 #include <FL/Fl_Overlay_Window.H>
 #include <FL/fl_draw.H>
+#include <FL/fl_ask.H>
 #include <FL/Fl.H>
 #include <string.h>
 #if HAVE_DLFCN_H
@@ -31,6 +32,9 @@
 #define ShapeBounding			0
 #define ShapeSet			0
 
+Window fl_window;
+
+
 #if USE_XDBE
 #include <X11/extensions/Xdbe.h>
 
@@ -422,6 +426,23 @@ void Fl_X11_Window_Driver::wait_for_expose() {
   }
 }
 
+
+// make X drawing go into this window (called by subclass flush() impl.)
+void Fl_X11_Window_Driver::make_current() {
+  if (!pWindow->shown()) {
+    fl_alert("Fl_Window::make_current(), but window is not shown().");
+    Fl::fatal("Fl_Window::make_current(), but window is not shown().");
+  }
+  fl_window = fl_xid(pWindow);
+  fl_graphics_driver->clip_region(0);
+  
+#ifdef FLTK_USE_CAIRO
+  // update the cairo_t context
+  if (Fl::cairo_autolink_context()) Fl::cairo_make_current(pWindow);
+#endif
+}
+
+
 //
 // End of "$Id$".
 //
-- 
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