1 files changed, 91 insertions, 0 deletions
diff --git a/liblogdiag/ld-canvas.h b/liblogdiag/ld-canvas.h
new file mode 100644
index 0000000..702f2fe
--- /dev/null
+++ b/liblogdiag/ld-canvas.h
@@ -0,0 +1,91 @@
+/*
+ * ld-canvas.h
+ *
+ * This file is a part of logdiag.
+ * Copyright Přemysl Janouch 2010. All rights reserved.
+ *
+ * See the file LICENSE for licensing information.
+ *
+ */
+
+#ifndef __LD_CANVAS_H__
+#define __LD_CANVAS_H__
+
+G_BEGIN_DECLS
+
+
+#define LD_TYPE_CANVAS (ld_canvas_get_type ())
+#define LD_CANVAS(obj) (G_TYPE_CHECK_INSTANCE_CAST \
+	((obj), LD_TYPE_CANVAS, LdCanvas))
+#define LD_CANVAS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST \
+	((klass), LD_TYPE_CANVAS, LdCanvasClass))
+#define LD_IS_CANVAS(obj) (G_TYPE_CHECK_INSTANCE_TYPE \
+	((obj), LD_TYPE_CANVAS))
+#define LD_IS_CANVAS_CLASS(klass) (G_TYPE_CHECK_INSTANCE_TYPE \
+	((klass), LD_TYPE_CANVAS))
+#define LD_CANVAS_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS \
+	((obj), LD_CANVAS, LdCanvasClass))
+
+typedef struct _LdCanvas LdCanvas;
+typedef struct _LdCanvasPrivate LdCanvasPrivate;
+typedef struct _LdCanvasClass LdCanvasClass;
+
+
+/**
+ * LdCanvas:
+ */
+struct _LdCanvas
+{
+/*< private >*/
+	GtkDrawingArea parent_instance;
+	LdCanvasPrivate *priv;
+
+/*< public >*/
+};
+
+struct _LdCanvasClass
+{
+/*< private >*/
+	GtkDrawingAreaClass parent_class;
+
+	guint cancel_operation_signal;
+
+	void (*set_scroll_adjustments) (LdCanvas *self,
+		GtkAdjustment *horizontal, GtkAdjustment *vertical);
+	void (*cancel_operation) (LdCanvas *self);
+};
+
+
+/**
+ * LD_CANVAS_BASE_UNIT:
+ *
+ * Length of the base unit in milimetres.
+ */
+#define LD_CANVAS_BASE_UNIT_LENGTH 2.5
+
+
+GType ld_canvas_get_type (void) G_GNUC_CONST;
+
+LdCanvas *ld_canvas_new (void);
+
+void ld_canvas_set_diagram (LdCanvas *self, LdDiagram *diagram);
+LdDiagram *ld_canvas_get_diagram (LdCanvas *self);
+void ld_canvas_set_library (LdCanvas *self, LdLibrary *library);
+LdLibrary *ld_canvas_get_library (LdCanvas *self);
+
+void ld_canvas_widget_to_diagram_coords (LdCanvas *self,
+	gdouble wx, gdouble wy, gdouble *dx, gdouble *dy);
+void ld_canvas_diagram_to_widget_coords (LdCanvas *self,
+	gdouble dx, gdouble dy, gdouble *wx, gdouble *wy);
+
+gdouble ld_canvas_get_zoom (LdCanvas *self);
+void ld_canvas_set_zoom (LdCanvas *self, gdouble zoom);
+
+void ld_canvas_add_object_begin (LdCanvas *self, LdDiagramObject *object);
+
+/* TODO: The rest of the interface. */
+
+
+G_END_DECLS
+
+#endif /* ! __LD_CANVAS_H__ */