From 682f95079691dd9c9b0677cb66e727397f910e0d Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Fri, 26 Feb 2016 12:51:47 +0000
Subject: Create class Fl_Widget_Surface that supports draw(Fl_Widget *, int,
 int).

This simplifies the implementation of Fl_Copy_Surface and Fl_Image_Surface
which now are made to derive from Fl_Widget_Surface.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11220 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/drivers/GDI/Fl_GDI_Graphics_Driver.cxx | 13 +++++++++++++
 src/drivers/GDI/Fl_GDI_Graphics_Driver.h   |  9 +++++++++
 2 files changed, 22 insertions(+)

(limited to 'src/drivers/GDI')

diff --git a/src/drivers/GDI/Fl_GDI_Graphics_Driver.cxx b/src/drivers/GDI/Fl_GDI_Graphics_Driver.cxx
index 175a48e7e..1230290c6 100644
--- a/src/drivers/GDI/Fl_GDI_Graphics_Driver.cxx
+++ b/src/drivers/GDI/Fl_GDI_Graphics_Driver.cxx
@@ -20,6 +20,7 @@
 #include <config.h>
 #include "../../config_lib.h"
 #include "Fl_GDI_Graphics_Driver.h"
+#include <FL/Fl.H>
 
 
 /* Reference to the current device context
@@ -129,6 +130,18 @@ void Fl_GDI_Graphics_Driver::copy_offscreen_with_alpha(int x,int y,int w,int h,H
   DeleteDC(new_gc);
 }
 
+void Fl_Translated_GDI_Graphics_Driver::translate_all(int x, int y) {
+  GetWindowOrgEx((HDC)gc(), origins+depth);
+  SetWindowOrgEx((HDC)gc(), origins[depth].x - x, origins[depth].y - y, NULL);
+  if (depth < sizeof(origins)/sizeof(POINT)) depth++;
+  else Fl::warning("Fl_Copy_Surface: translate stack overflow!");
+}
+
+void Fl_Translated_GDI_Graphics_Driver::untranslate_all() {
+  if (depth > 0) depth--;
+  SetWindowOrgEx((HDC)gc(), origins[depth].x, origins[depth].y, NULL);
+}
+
 //
 // End of "$Id$".
 //
diff --git a/src/drivers/GDI/Fl_GDI_Graphics_Driver.h b/src/drivers/GDI/Fl_GDI_Graphics_Driver.h
index 6852b4beb..a4b2730aa 100644
--- a/src/drivers/GDI/Fl_GDI_Graphics_Driver.h
+++ b/src/drivers/GDI/Fl_GDI_Graphics_Driver.h
@@ -26,6 +26,7 @@
 #define FL_GDI_GRAPHICS_DRIVER_H
 
 #include <FL/Fl_Graphics_Driver.H>
+#include <windows.h>
 
 
 /**
@@ -136,6 +137,14 @@ public:
   int draw_scaled(Fl_Image *img, int XP, int YP, int WP, int HP);
 };
 
+class Fl_Translated_GDI_Graphics_Driver : public Fl_GDI_Graphics_Driver {
+  unsigned depth;
+  POINT origins[10];
+public:
+  Fl_Translated_GDI_Graphics_Driver() {depth = 0;}
+  virtual void translate_all(int x, int y);
+  virtual void untranslate_all(void);
+};
 
 #endif // FL_GDI_GRAPHICS_DRIVER_H
 
-- 
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