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-rw-r--r--src/c_fl_cairo_window.cpp110
-rw-r--r--src/c_fl_cairo_window.h29
-rw-r--r--src/fltk-widgets-groups-windows-double-cairo.adb221
-rw-r--r--src/fltk-widgets-groups-windows-double-cairo.ads101
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;
+
+
generated by cgit (git 2.30.0) at 2025-01-15 16:14:58 +0000