[gtk/wip/otte/canvas: 2/2] Add GtkCanvas

[Benjamin Otte <otte src gnome org>]

commit 3e3182780bc77fcfd3766e1b9c778df754cbb827
Author: Benjamin Otte <otte redhat com>
Date:   Wed Jun 1 05:53:44 2022 +0200

    Add GtkCanvas

 gtk/gtk.h             |  2 ++
 gtk/gtkcanvas.h       | 49 +++++++++++++++++++++++++++
 gtk/gtkcanvaslayout.h | 91 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 142 insertions(+)
---
diff --git a/gtk/gtk.h b/gtk/gtk.h
index 0d4521e4ac..a0caf7bcdc 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -59,6 +59,8 @@
 #include <gtk/gtkbuilderscope.h>
 #include <gtk/gtkbutton.h>
 #include <gtk/gtkcalendar.h>
+#include <gtk/gtkcanvas.h>
+#include <gtk/gtkcanvaslayout.h>
 #include <gtk/gtkcellarea.h>
 #include <gtk/gtkcellareabox.h>
 #include <gtk/gtkcellareacontext.h>
diff --git a/gtk/gtkcanvas.h b/gtk/gtkcanvas.h
new file mode 100644
index 0000000000..717b3be411
--- /dev/null
+++ b/gtk/gtkcanvas.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright © 2022 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte gnome org>
+ */
+
+#ifndef __GTK_CANVAS_H__
+#define __GTK_CANVAS_H__
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gtk/gtkmediastream.h>
+#include <gtk/gtkwidget.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_CANVAS         (gtk_canvas_get_type ())
+
+GDK_AVAILABLE_IN_ALL
+G_DECLARE_FINAL_TYPE (GtkCanvas, gtk_canvas, GTK, CANVAS, GtkWidget)
+
+GDK_AVAILABLE_IN_ALL
+GtkWidget *     gtk_canvas_new                          (GListModel             *children);
+
+GDK_AVAILABLE_IN_ALL
+void            gtk_canvas_set_children                 (GtkCanvas              *self,
+                                                         GListModel             *children);
+GDK_AVAILABLE_IN_ALL
+GListModel *    gtk_canvas_get_children                 (GtkCanvas              *self);
+
+
+G_END_DECLS
+
+#endif  /* __GTK_CANVAS_H__ */
diff --git a/gtk/gtkcanvaslayout.h b/gtk/gtkcanvaslayout.h
new file mode 100644
index 0000000000..c85e64ba2a
--- /dev/null
+++ b/gtk/gtkcanvaslayout.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright © 2022 Benjamin Otte
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte gnome org>
+ */
+
+#ifndef __GTK_CANVAS_H__
+#define __GTK_CANVAS_H__
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gtk/gtklayoutmanager.h>
+
+G_BEGIN_DECLS
+
+struct _GtkPosition {
+  float relative;
+  float absolute;
+};
+
+#define GTK_TYPE_CANVAS_LAYOUT (gtk_canvas_layout_get_type ())
+#define GTK_TYPE_CANVAS_LAYOUT_CHILD (gtk_canvas_layout_child_get_type ())
+
+/* GtkCanvasLayout */
+
+GDK_AVAILABLE_IN_ALL
+G_DECLARE_FINAL_TYPE (GtkCanvasLayout, gtk_canvas_layout, GTK, CANVAS_LAYOUT, GtkLayoutManager)
+
+GDK_AVAILABLE_IN_ALL
+GtkLayoutManager *      gtk_canvas_layout_new    (void);
+
+/* GtkCanvasLayoutChild */
+
+GDK_AVAILABLE_IN_ALL
+G_DECLARE_FINAL_TYPE (GtkCanvasLayoutChild, gtk_canvas_layout_child, GTK, CANVAS_LAYOUT_CHILD, 
GtkLayoutChild)
+
+GDK_AVAILABLE_IN_ALL
+void                    gtk_canvas_layout_child_set_x           (GtkCanvasLayoutChild   *self,
+                                                                 const GtkPosition      *position);
+GDK_AVAILABLE_IN_ALL
+const GtkPosition *     gtk_canvas_layout_child_get_x           (GtkCanvasLayoutChild   *self);
+GDK_AVAILABLE_IN_ALL
+void                    gtk_canvas_layout_child_set_y           (GtkCanvasLayoutChild   *self,
+                                                                 const GtkPosition      *position);
+GDK_AVAILABLE_IN_ALL
+const GtkPosition *     gtk_canvas_layout_child_get_y           (GtkCanvasLayoutChild   *self);
+GDK_AVAILABLE_IN_ALL
+void                    gtk_canvas_layout_child_set_origin_x    (GtkCanvasLayoutChild   *self,
+                                                                 const GtkPosition      *position);
+GDK_AVAILABLE_IN_ALL
+const GtkPosition *     gtk_canvas_layout_child_get_origin_x    (GtkCanvasLayoutChild   *self);
+GDK_AVAILABLE_IN_ALL
+void                    gtk_canvas_layout_child_set_origin_y    (GtkCanvasLayoutChild   *self,
+                                                                 const GtkPosition      *position);
+GDK_AVAILABLE_IN_ALL
+const GtkPosition *     gtk_canvas_layout_child_get_origin_y    (GtkCanvasLayoutChild   *self);
+GDK_AVAILABLE_IN_ALL
+void                    gtk_canvas_layout_child_set_transform   (GtkCanvasLayoutChild   *self,
+                                                                 GskTransform           *transform);
+GDK_AVAILABLE_IN_ALL
+const GskTransform *    gtk_canvas_layout_child_get_transform   (GtkCanvasLayoutChild   *self);
+
+GDK_AVAILABLE_IN_ALL
+void                    gtk_canvas_layout_child_set_hpolicy     (GtkCanvasLayoutChild   *self,
+                                                                 GtkScrollablePolicy     policy);
+GDK_AVAILABLE_IN_ALL
+GtkScrollablePolicy     gtk_canvas_layout_child_get_hpolicy     (GtkCanvasLayoutChild   *self);
+GDK_AVAILABLE_IN_ALL
+void                    gtk_canvas_layout_child_set_vpolicy     (GtkCanvasLayoutChild   *self,
+                                                                 GtkScrollablePolicy     policy);
+GDK_AVAILABLE_IN_ALL
+GtkScrollablePolicy     gtk_canvas_layout_child_get_vpolicy     (GtkCanvasLayoutChild   *self);
+
+G_END_DECLS
+
+#endif  /* __GTK_CANVAS_H__ */