Fl_Cairo_Window binding added

4 files changed, 461 insertions, 0 deletions

diff --git a/src/c_fl_cairo_window.cpp b/src/c_fl_cairo_window.cpp
new file mode 100644
index 0000000..59b03ed
--- /dev/null
+++ b/src/c_fl_cairo_window.cpp
@@ -0,0 +1,110 @@
+
+
+//  Programmed by Jedidiah Barber
+//  Released into the public domain
+
+
+#include <FL/Fl_Cairo_Window.H>
+#include <FL/Fl_Double_Window.H>
+#include "c_fl_cairo_window.h"
+
+
+
+
+//  Exports from Ada
+
+extern "C" void widget_draw_hook(void * ud);
+extern "C" int widget_handle_hook(void * ud, int e);
+
+
+
+
+//  Attaching all relevant hooks and friends
+
+class My_Cairo_Window :
+#ifdef FLTK_HAVE_CAIRO
+public Fl_Cairo_Window
+#else
+public Fl_Double_Window
+#endif
+{
+public:
+#ifdef FLTK_HAVE_CAIRO
+    using Fl_Cairo_Window::Fl_Cairo_Window;
+#else
+    using Fl_Double_Window::Fl_Double_Window;
+#endif
+
+    friend void fl_cairo_window_draw(CAIROWINDOW w);
+
+    int handle(int e);
+
+protected:
+    void draw();
+};
+
+
+void My_Cairo_Window::draw() {
+    widget_draw_hook(this->user_data());
+}
+
+int My_Cairo_Window::handle(int e) {
+    return widget_handle_hook(this->user_data(), e);
+}
+
+
+
+
+//  Flattened C API begins here
+
+CAIROWINDOW new_fl_cairo_window(int x, int y, int w, int h, char * label) {
+    My_Cairo_Window *c = new My_Cairo_Window(x, y, w, h, label);
+    return c;
+}
+
+CAIROWINDOW new_fl_cairo_window2(int w, int h, char * label) {
+    My_Cairo_Window *c = new My_Cairo_Window(w, h, label);
+    return c;
+}
+
+CAIROWINDOW new_fl_cairo_window3(int w, int h) {
+    My_Cairo_Window *c = new My_Cairo_Window(w, h);
+    return c;
+}
+
+void free_fl_cairo_window(CAIROWINDOW w) {
+    delete reinterpret_cast<My_Cairo_Window*>(w);
+}
+
+
+
+
+void fl_cairo_window_set_draw_cb(CAIROWINDOW w, void * cb) {
+    #ifdef FLTK_HAVE_CAIRO
+    reinterpret_cast<Fl_Cairo_Window*>(w)->set_draw_cb(reinterpret_cast<cairo_draw_cb>(cb));
+    #else
+    (void)(w);
+    (void)(cb);
+    #endif
+}
+
+
+
+
+void fl_cairo_window_draw(CAIROWINDOW w) {
+    #ifdef FLTK_HAVE_CAIRO
+    reinterpret_cast<My_Cairo_Window*>(w)->Fl_Cairo_Window::draw();
+    #else
+    reinterpret_cast<My_Cairo_Window*>(w)->Fl_Double_Window::draw();
+    #endif
+}
+
+int fl_cairo_window_handle(CAIROWINDOW w, int e) {
+    #ifdef FLTK_HAVE_CAIRO
+    return reinterpret_cast<My_Cairo_Window*>(w)->Fl_Cairo_Window::handle(e);
+    #else
+    return reinterpret_cast<My_Cairo_Window*>(w)->Fl_Double_Window::handle(e);
+    #endif
+}
+
+
diff --git a/src/c_fl_cairo_window.h b/src/c_fl_cairo_window.h
new file mode 100644
index 0000000..e9a1437
--- /dev/null
+++ b/src/c_fl_cairo_window.h
@@ -0,0 +1,29 @@
+
+
+//  Programmed by Jedidiah Barber
+//  Released into the public domain
+
+
+#ifndef FL_CAIRO_WINDOW_GUARD
+#define FL_CAIRO_WINDOW_GUARD
+
+
+typedef void* CAIROWINDOW;
+
+
+extern "C" CAIROWINDOW new_fl_cairo_window(int x, int y, int w, int h, char * label);
+extern "C" CAIROWINDOW new_fl_cairo_window2(int w, int h, char * label);
+extern "C" CAIROWINDOW new_fl_cairo_window3(int w, int h);
+extern "C" void free_fl_cairo_window(CAIROWINDOW w);
+
+
+extern "C" void fl_cairo_window_set_draw_cb(CAIROWINDOW w, void * cb);
+
+
+extern "C" void fl_cairo_window_draw(CAIROWINDOW w);
+extern "C" int fl_cairo_window_handle(CAIROWINDOW w, int e);
+
+
+#endif
+
+
diff --git a/src/fltk-widgets-groups-windows-double-cairo.adb b/src/fltk-widgets-groups-windows-double-cairo.adb
new file mode 100644
index 0000000..61ea232
--- /dev/null
+++ b/src/fltk-widgets-groups-windows-double-cairo.adb
@@ -0,0 +1,221 @@
+
+
+--  Programmed by Jedidiah Barber
+--  Released into the public domain
+
+
+with
+
+    Interfaces.C,
+    System.Address_To_Access_Conversions;
+
+
+package body FLTK.Widgets.Groups.Windows.Double.Cairo is
+
+
+    ------------------------
+    --  Functions From C  --
+    ------------------------
+
+    function new_fl_cairo_window
+           (X, Y, W, H : in Interfaces.C.int;
+            Text       : in Interfaces.C.char_array)
+        return Storage.Integer_Address;
+    pragma Import (C, new_fl_cairo_window, "new_fl_cairo_window");
+    pragma Inline (new_fl_cairo_window);
+
+    function new_fl_cairo_window2
+           (W, H : in Interfaces.C.int;
+            Text : in Interfaces.C.char_array)
+        return Storage.Integer_Address;
+    pragma Import (C, new_fl_cairo_window2, "new_fl_cairo_window2");
+    pragma Inline (new_fl_cairo_window2);
+
+    function new_fl_cairo_window3
+           (W, H : in Interfaces.C.int)
+        return Storage.Integer_Address;
+    pragma Import (C, new_fl_cairo_window3, "new_fl_cairo_window3");
+    pragma Inline (new_fl_cairo_window3);
+
+    procedure free_fl_cairo_window
+           (W : in Storage.Integer_Address);
+    pragma Import (C, free_fl_cairo_window, "free_fl_cairo_window");
+    pragma Inline (free_fl_cairo_window);
+
+
+
+
+    procedure fl_cairo_window_set_draw_cb
+           (W, F : in Storage.Integer_Address);
+    pragma Import (C, fl_cairo_window_set_draw_cb, "fl_cairo_window_set_draw_cb");
+    pragma Inline (fl_cairo_window_set_draw_cb);
+
+
+
+
+    procedure fl_cairo_window_draw
+           (W : in Storage.Integer_Address);
+    pragma Import (C, fl_cairo_window_draw, "fl_cairo_window_draw");
+    pragma Inline (fl_cairo_window_draw);
+
+    function fl_cairo_window_handle
+           (W : in Storage.Integer_Address;
+            E : in Interfaces.C.int)
+        return Interfaces.C.int;
+    pragma Import (C, fl_cairo_window_handle, "fl_cairo_window_handle");
+    pragma Inline (fl_cairo_window_handle);
+
+
+
+
+    ----------------------
+    --  Callback Hooks  --
+    ----------------------
+
+    package Cairo_Convert is new System.Address_To_Access_Conversions (Cairo_Window'Class);
+
+
+    procedure Cairo_Draw_Hook
+           (C_Addr, Cairo_Addr : in Storage.Integer_Address);
+
+    pragma Convention (C, Cairo_Draw_Hook);
+
+    procedure Cairo_Draw_Hook
+           (C_Addr, Cairo_Addr : in Storage.Integer_Address)
+    is
+        Ada_Addr : System.Address :=
+            Storage.To_Address (fl_widget_get_user_data (C_Addr));
+        Ada_Object : access Cairo_Window'Class :=
+            Cairo_Convert.To_Pointer (Ada_Addr);
+    begin
+        if Ada_Object.My_Func /= null then
+            Ada_Object.My_Func (Cairo_Window (Ada_Object.all), Storage.To_Address (Cairo_Addr));
+        end if;
+    end Cairo_Draw_Hook;
+
+
+
+
+    -------------------
+    --  Destructors  --
+    -------------------
+
+    procedure Extra_Final
+           (This : in out Cairo_Window) is
+    begin
+        Extra_Final (Double_Window (This));
+    end Extra_Final;
+
+
+    procedure Finalize
+           (This : in out Cairo_Window) is
+    begin
+        Extra_Final (This);
+        if This.Void_Ptr /= Null_Pointer and This.Needs_Dealloc then
+            free_fl_cairo_window (This.Void_Ptr);
+            This.Void_Ptr := Null_Pointer;
+        end if;
+    end Finalize;
+
+
+
+
+    --------------------
+    --  Constructors  --
+    --------------------
+
+    procedure Extra_Init
+           (This       : in out Cairo_Window;
+            X, Y, W, H : in     Integer;
+            Text       : in     String) is
+    begin
+        fl_cairo_window_set_draw_cb (This.Void_Ptr, Storage.To_Integer (Cairo_Draw_Hook'Address));
+        Extra_Init (Double_Window (This), X, Y, W, H, Text);
+    end Extra_Init;
+
+
+    package body Forge is
+
+        function Create
+               (X, Y, W, H : in Integer;
+                Text       : in String := "")
+            return Cairo_Window is
+        begin
+            return This : Cairo_Window do
+                This.Void_Ptr := new_fl_cairo_window
+                   (Interfaces.C.int (X),
+                    Interfaces.C.int (Y),
+                    Interfaces.C.int (W),
+                    Interfaces.C.int (H),
+                    Interfaces.C.To_C (Text));
+                Extra_Init (This, X, Y, W, H, Text);
+            end return;
+        end Create;
+
+
+        function Create
+               (W, H : in Integer;
+                Text : in String := "")
+            return Cairo_Window is
+        begin
+            return This : Cairo_Window do
+                This.Void_Ptr := new_fl_cairo_window2
+                   (Interfaces.C.int (W),
+                    Interfaces.C.int (H),
+                    Interfaces.C.To_C (Text));
+                Extra_Init (This, This.Get_X, This.Get_Y, W, H, Text);
+            end return;
+        end Create;
+
+
+        function Create
+               (W, H : in Integer)
+            return Cairo_Window is
+        begin
+            return This : Cairo_Window do
+                This.Void_Ptr := new_fl_cairo_window3
+                   (Interfaces.C.int (W),
+                    Interfaces.C.int (H));
+                Extra_Init (This, This.Get_X, This.Get_Y, W, H, This.Get_Label);
+            end return;
+        end Create;
+
+    end Forge;
+
+
+
+
+    ------------------------
+    --  Cairo Window API  --
+    ------------------------
+
+    procedure Set_Cairo_Draw
+           (This : in out Cairo_Window;
+            Func : in     Cairo_Callback) is
+    begin
+        This.My_Func := Func;
+    end Set_Cairo_Draw;
+
+
+
+
+    procedure Draw
+           (This : in out Cairo_Window) is
+    begin
+        fl_cairo_window_draw (This.Void_Ptr);
+    end Draw;
+
+
+    function Handle
+           (This  : in out Cairo_Window;
+            Event : in     Event_Kind)
+        return Event_Outcome is
+    begin
+        return Event_Outcome'Val
+           (fl_cairo_window_handle (This.Void_Ptr, Event_Kind'Pos (Event)));
+    end Handle;
+
+
+end FLTK.Widgets.Groups.Windows.Double.Cairo;
+
+
diff --git a/src/fltk-widgets-groups-windows-double-cairo.ads b/src/fltk-widgets-groups-windows-double-cairo.ads
new file mode 100644
index 0000000..111f7ac
--- /dev/null
+++ b/src/fltk-widgets-groups-windows-double-cairo.ads
@@ -0,0 +1,101 @@
+
+
+--  Programmed by Jedidiah Barber
+--  Released into the public domain
+
+
+with
+
+    System;
+
+
+package FLTK.Widgets.Groups.Windows.Double.Cairo is
+
+
+    --  If FLTK has not been built with Cairo support then
+    --  this will just be a duplicate of Double_Window and the
+    --  callback set with Set_Cairo_Draw will never be triggered.
+
+    --  Building with Cairo support requires either of
+    --  1. CMake option FLTK_OPTION_CAIRO_WINDOW
+    --  2. configure -enable-cairo
+    --  when building FLTK itself.
+
+
+    type Cairo_Window is new Double_Window with private;
+
+    type Cairo_Window_Reference (Data : not null access Cairo_Window'Class) is
+        limited null record with Implicit_Dereference => Data;
+
+    type Cairo_Callback is access procedure
+           (This    : in out Cairo_Window;
+            Context : in     System.Address);
+
+
+
+
+    package Forge is
+
+        function Create
+               (X, Y, W, H : in Integer;
+                Text       : in String := "")
+            return Cairo_Window;
+
+        function Create
+               (W, H : in Integer;
+                Text : in String := "")
+            return Cairo_Window;
+
+        function Create
+               (W, H : in Integer)
+            return Cairo_Window;
+
+    end Forge;
+
+
+
+
+    procedure Set_Cairo_Draw
+           (This : in out Cairo_Window;
+            Func : in     Cairo_Callback);
+
+
+
+
+    procedure Draw
+           (This : in out Cairo_Window);
+
+    function Handle
+           (This  : in out Cairo_Window;
+            Event : in     Event_Kind)
+        return Event_Outcome;
+
+
+private
+
+
+    type Cairo_Window is new Double_Window with record
+        My_Func : Cairo_Callback;
+    end record;
+
+    overriding procedure Finalize
+           (This : in out Cairo_Window);
+
+    procedure Extra_Init
+           (This       : in out Cairo_Window;
+            X, Y, W, H : in     Integer;
+            Text       : in     String);
+
+    procedure Extra_Final
+           (This : in out Cairo_Window);
+
+
+    pragma Inline (Set_Cairo_Draw);
+
+    pragma Inline (Draw);
+    pragma Inline (Handle);
+
+
+end FLTK.Widgets.Groups.Windows.Double.Cairo;
+
+