From 5aa2cbc50e016fd833b35603c73b0a88692607f3 Mon Sep 17 00:00:00 2001
From: Jed Barber <jjbarber@y7mail.com>
Date: Sat, 24 Mar 2018 14:36:52 +1100
Subject: Added FLTK.Devices.Surfaces

---
 src/c_fl_surface.cpp          | 38 +++++++++++++++++
 src/c_fl_surface.h            | 25 +++++++++++
 src/fltk-devices-surfaces.adb | 96 +++++++++++++++++++++++++++++++++++++++++++
 src/fltk-devices-surfaces.ads | 48 ++++++++++++++++++++++
 4 files changed, 207 insertions(+)
 create mode 100644 src/c_fl_surface.cpp
 create mode 100644 src/c_fl_surface.h
 create mode 100644 src/fltk-devices-surfaces.adb
 create mode 100644 src/fltk-devices-surfaces.ads

(limited to 'src')

diff --git a/src/c_fl_surface.cpp b/src/c_fl_surface.cpp
new file mode 100644
index 0000000..89d661f
--- /dev/null
+++ b/src/c_fl_surface.cpp
@@ -0,0 +1,38 @@
+
+
+#include <FL/Fl_Device.H>
+#include "c_fl_surface.h"
+
+
+
+
+class My_Surface_Device : public Fl_Surface_Device {
+    public:
+        using Fl_Surface_Device::Fl_Surface_Device;
+        friend SURFACE new_fl_surface(void * g);
+};
+
+
+
+
+SURFACE new_fl_surface(void * g) {
+    My_Surface_Device *s = new My_Surface_Device(reinterpret_cast<Fl_Graphics_Driver*>(g));
+    return s;
+}
+
+void free_fl_surface(SURFACE s) {
+    delete reinterpret_cast<My_Surface_Device*>(s);
+}
+
+
+
+
+void fl_surface_set_current(SURFACE s) {
+    reinterpret_cast<Fl_Surface_Device*>(s)->set_current();
+}
+
+SURFACE fl_surface_get_surface(void) {
+    return Fl_Surface_Device::surface();
+}
+
+
diff --git a/src/c_fl_surface.h b/src/c_fl_surface.h
new file mode 100644
index 0000000..dd8d8e9
--- /dev/null
+++ b/src/c_fl_surface.h
@@ -0,0 +1,25 @@
+
+
+#ifndef FL_SURFACE_GUARD
+#define FL_SURFACE_GUARD
+
+
+
+
+typedef void* SURFACE;
+
+
+
+
+extern "C" SURFACE new_fl_surface(void * g);
+extern "C" void free_fl_surface(SURFACE s);
+
+
+
+
+extern "C" void fl_surface_set_current(SURFACE s);
+extern "C" SURFACE fl_surface_get_surface(void);
+
+
+#endif
+
diff --git a/src/fltk-devices-surfaces.adb b/src/fltk-devices-surfaces.adb
new file mode 100644
index 0000000..a0c5042
--- /dev/null
+++ b/src/fltk-devices-surfaces.adb
@@ -0,0 +1,96 @@
+
+
+with
+
+    System;
+
+use type
+
+    System.Address;
+
+
+package body FLTK.Devices.Surfaces is
+
+
+    function new_fl_surface
+           (G : in System.Address)
+        return System.Address;
+    pragma Import (C, new_fl_surface, "new_fl_surface");
+
+    procedure free_fl_surface
+           (S : in System.Address);
+    pragma Import (C, free_fl_surface, "free_fl_surface");
+
+
+
+
+    procedure fl_surface_set_current
+           (S : in System.Address);
+    pragma Import (C, fl_surface_set_current, "fl_surface_set_current");
+
+    function fl_surface_get_surface
+        return System.Address;
+    pragma Import (C, fl_surface_get_surface, "fl_surface_get_surface");
+
+
+
+
+    procedure Finalize
+           (This : in out Surface_Device) is
+    begin
+        if  This.Void_Ptr /= System.Null_Address and then
+            This in Surface_Device'Class
+        then
+            if This.Needs_Dealloc then
+                free_fl_surface (This.Void_Ptr);
+            end if;
+            This.Void_Ptr := System.Null_Address;
+        end if;
+        Finalize (Device (This));
+    end Finalize;
+
+
+
+
+    package body Forge is
+
+        function Create
+               (Graphics : in out FLTK.Devices.Graphics.Graphics_Driver)
+            return Surface_Device is
+        begin
+            return This : Surface_Device do
+                This.Void_Ptr := new_fl_surface (Wrapper (Graphics).Void_Ptr);
+            end return;
+        end Create;
+
+    end Forge;
+
+
+
+
+    function Get_Current
+        return access Surface_Device is
+    begin
+        return Current_Ptr;
+    end Get_Current;
+
+
+    procedure Set_Current
+           (This : in out Surface_Device) is
+    begin
+        fl_surface_set_current (This.Void_Ptr);
+        Current_Ptr := This'Unchecked_Access;
+    end Set_Current;
+
+
+
+
+begin
+
+
+    Original_Surface.Void_Ptr := fl_surface_get_surface;
+    Original_Surface.Needs_Dealloc := False;
+
+
+end FLTK.Devices.Surfaces;
+
diff --git a/src/fltk-devices-surfaces.ads b/src/fltk-devices-surfaces.ads
new file mode 100644
index 0000000..da3d0a6
--- /dev/null
+++ b/src/fltk-devices-surfaces.ads
@@ -0,0 +1,48 @@
+
+
+with
+
+    FLTK.Devices.Graphics;
+
+
+package FLTK.Devices.Surfaces is
+
+
+    type Surface_Device is new Device with private;
+
+
+
+
+    package Forge is
+
+        function Create
+               (Graphics : in out FLTK.Devices.Graphics.Graphics_Driver)
+            return Surface_Device;
+
+    end Forge;
+
+
+
+
+    function Get_Current
+        return access Surface_Device;
+
+    procedure Set_Current
+           (This : in out Surface_Device);
+
+
+private
+
+
+    type Surface_Device is new Device with null record;
+
+    overriding procedure Finalize
+           (This : in out Surface_Device);
+
+
+    Original_Surface : aliased Surface_Device;
+    Current_Ptr : access Surface_Device := Original_Surface'Access;
+
+
+end FLTK.Devices.Surfaces;
+
-- 
cgit