Skeleton for the flowcanvas plain C wrapper

gui/canvas.c

@@ -0,0 +1,140 @@
+/* -*- Mode: C ; c-basic-offset: 2 -*- */
+/*
+ * LADI Session Handler (ladish)
+ *
+ * Copyright (C) 2009 Nedko Arnaudov <nedko@arnaudov.name>
+ *
+ **************************************************************************
+ * This file contains implements the canvas functionality through flowcanvas
+ **************************************************************************
+ *
+ * LADI Session Handler is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * LADI Session Handler is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
+ * or write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "canvas.h"
+
+bool
+canvas_create(
+  int width,
+  int height,
+  canvas_handle * canvas_handle_ptr)
+{
+  return false;
+}
+
+bool
+canvas_destroy(
+  canvas_handle canvas)
+{
+  return false;
+}
+
+void
+canvas_clear(
+  canvas_handle canvas)
+{
+}
+
+void
+canvas_set_zoom(
+  canvas_handle canvas,
+  double pix_per_unit)
+{
+}
+
+void
+canvas_arrange(
+  canvas_handle canvas)
+{
+}
+
+bool
+canvas_create_module(
+  canvas_handle canvas,
+  const char * name,
+  double x,
+  double y,
+  bool show_title,
+  bool show_port_labels,
+  canvas_module_handle * module_handle_ptr)
+{
+  return false;
+}
+
+bool
+canvas_destroy_module(
+  canvas_handle canvas,
+  canvas_module_handle module)
+{
+  return false;
+}
+
+bool
+canvas_create_port(
+  canvas_handle canvas,
+  canvas_module_handle module,
+  const char * name,
+  bool is_input,
+  int color)
+{
+  return false;
+}
+
+bool
+canvas_destroy_port(
+  canvas_handle canvas,
+  canvas_port_handle port)
+{
+  return false;
+}
+
+bool
+canvas_add_connection(
+  canvas_handle canvas,
+  canvas_port_handle port1,
+  canvas_port_handle port2,
+  uint32_t color)
+{
+  return false;
+}
+
+bool
+canvas_remove_connection(
+  canvas_handle canvas,
+  canvas_port_handle port1,
+  canvas_port_handle port2)
+{
+  return false;
+}
+
+bool
+canvas_enum_modules(
+  canvas_handle canvas,
+  void * callback_context,
+  bool (* callback)(void * context, canvas_module_handle module))
+{
+  return false;
+}
+
+bool
+canvas_enum_module_ports(
+  canvas_handle canvas,
+  canvas_module_handle module,
+  void * callback_context,
+  bool (* callback)(void * context, canvas_port_handle port))
+{
+  return false;
+}

gui/canvas.h

@@ -0,0 +1,127 @@
+/* -*- Mode: C ; c-basic-offset: 2 -*- */
+/*
+ * LADI Session Handler (ladish)
+ *
+ * Copyright (C) 2009 Nedko Arnaudov <nedko@arnaudov.name>
+ *
+ **************************************************************************
+ * This file contains the interface to the canvas functionality
+ **************************************************************************
+ *
+ * LADI Session Handler is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * LADI Session Handler is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
+ * or write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef CANVAS_H__BE110B39_CB54_47C2_A5B2_FFB3BA7CDA6D__INCLUDED
+#define CANVAS_H__BE110B39_CB54_47C2_A5B2_FFB3BA7CDA6D__INCLUDED
+
+#include "common.h"
+
+typedef struct canvas_tag { int unused; } * canvas_handle;
+typedef struct canvas_module_tag { int unused; } * canvas_module_handle;
+typedef struct canvas_port_tag { int unused; } * canvas_port_handle;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#if 0
+} /* Adjust editor indent */
+#endif
+
+bool
+canvas_create(
+  int width,
+  int height,
+  canvas_handle * canvas_handle_ptr);
+
+bool
+canvas_destroy(
+  canvas_handle canvas);
+
+void
+canvas_clear(
+  canvas_handle canvas);
+
+void
+canvas_set_zoom(
+  canvas_handle canvas,
+  double pix_per_unit);
+
+void
+canvas_arrange(
+  canvas_handle canvas);
+
+bool
+canvas_create_module(
+  canvas_handle canvas,
+  const char * name,
+  double x,
+  double y,
+  bool show_title,
+  bool show_port_labels,
+  canvas_module_handle * module_handle_ptr);
+
+bool
+canvas_destroy_module(
+  canvas_handle canvas,
+  canvas_module_handle module);
+
+bool
+canvas_create_port(
+  canvas_handle canvas,
+  canvas_module_handle module,
+  const char * name,
+  bool is_input,
+  int color);
+
+bool
+canvas_destroy_port(
+  canvas_handle canvas,
+  canvas_port_handle port);
+
+bool
+canvas_add_connection(
+  canvas_handle canvas,
+  canvas_port_handle port1,
+  canvas_port_handle port2,
+  uint32_t color);
+
+bool
+canvas_remove_connection(
+  canvas_handle canvas,
+  canvas_port_handle port1,
+  canvas_port_handle port2);
+
+bool
+canvas_enum_modules(
+  canvas_handle canvas,
+  void * callback_context,
+  bool (* callback)(void * context, canvas_module_handle module));
+
+bool
+canvas_enum_module_ports(
+  canvas_handle canvas,
+  canvas_module_handle module,
+  void * callback_context,
+  bool (* callback)(void * context, canvas_port_handle port));
+
+#if 0
+{ /* Adjust editor indent */
+#endif
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* #ifndef CANVAS_H__BE110B39_CB54_47C2_A5B2_FFB3BA7CDA6D__INCLUDED */

gui/common.h

@@ -0,0 +1,35 @@
+/* -*- Mode: C ; c-basic-offset: 2 -*- */
+/*
+ * LADI Session Handler (ladish)
+ *
+ * Copyright (C) 2009 Nedko Arnaudov <nedko@arnaudov.name>
+ *
+ **************************************************************************
+ * This file contains stuff that is needed almost everywhere in the gladish
+ **************************************************************************
+ *
+ * LADI Session Handler is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * LADI Session Handler is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
+ * or write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef COMMON_H__15E63B7A_8350_4ABD_B04C_592158354949__INCLUDED
+#define COMMON_H__15E63B7A_8350_4ABD_B04C_592158354949__INCLUDED
+
+#include "config.h"             /* configure stage result */
+
+#include <stdbool.h>            /* C99 bool */
+#include <stdint.h>             /* fixed bit size ints */
+
+#endif /* #ifndef COMMON_H__15E63B7A_8350_4ABD_B04C_592158354949__INCLUDED */

wscript

@@ -266,6 +266,7 @@ def build(bld):
         'session.cpp',
         'a2j_proxy.cpp',
         'dbus_helpers.c',
+        'canvas.c',
         ]:
         gladish.source.append(os.path.join("gui", source))