Added missing eraser files

[inkscape.git] / src / eraser-context.h

diff --git a/src/eraser-context.h b/src/eraser-context.h
new file mode 100644 (file)
index 0000000..bc86201
--- /dev/null
+++ b/src/eraser-context.h
@@ -0,0 +1,127 @@
+#ifndef SP_ERASER_CONTEXT_H_SEEN
+#define SP_ERASER_CONTEXT_H_SEEN
+
+/*
+ * Handwriting-like drawing mode
+ *
+ * Authors:
+ *   Mitsuru Oka <oka326@parkcity.ne.jp>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * The original dynadraw code:
+ *   Paul Haeberli <paul@sgi.com>
+ *
+ * Copyright (C) 1998 The Free Software Foundation
+ * Copyright (C) 1999-2002 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ * Copyright (C) 2008 Jon A. Cruz
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include "display/curve.h"
+#include "event-context.h"
+#include <display/display-forward.h>
+#include <libnr/nr-point.h>
+
+#define SP_TYPE_ERASER_CONTEXT (sp_eraser_context_get_type())
+#define SP_ERASER_CONTEXT(o) (GTK_CHECK_CAST((o), SP_TYPE_ERASER_CONTEXT, SPEraserContext))
+#define SP_ERASER_CONTEXT_CLASS(k) (GTK_CHECK_CLASS_CAST((k), SP_TYPE_ERASER_CONTEXT, SPEraserContextClass))
+#define SP_IS_ERASER_CONTEXT(o) (GTK_CHECK_TYPE((o), SP_TYPE_ERASER_CONTEXT))
+#define SP_IS_ERASER_CONTEXT_CLASS(k) (GTK_CHECK_CLASS_TYPE((k), SP_TYPE_ERASER_CONTEXT))
+
+class SPEraserContext;
+class SPEraserContextClass;
+
+#define SAMPLING_SIZE 8        /* fixme: ?? */
+
+#define ERC_MIN_PRESSURE      0.0
+#define ERC_MAX_PRESSURE      1.0
+#define ERC_DEFAULT_PRESSURE  1.0
+
+#define ERC_MIN_TILT         -1.0
+#define ERC_MAX_TILT          1.0
+#define ERC_DEFAULT_TILT      0.0
+
+struct SPEraserContext
+{
+    SPEventContext event_context;
+
+    /** accumulated shape which ultimately goes in svg:path */
+    SPCurve *accumulated;
+
+    /** canvas items for "comitted" segments */
+    GSList *segments;
+
+    /** canvas item for red "leading" segment */
+    SPCanvasItem *currentshape;
+    /** shape of red "leading" segment */
+    SPCurve *currentcurve;
+
+    /** left edge of the stroke; combined to get accumulated */
+    SPCurve *cal1;
+    /** right edge of the stroke; combined to get accumulated */
+    SPCurve *cal2;
+
+    /** left edge points for this segment */
+    NR::Point point1[SAMPLING_SIZE];
+    /** right edge points for this segment */
+    NR::Point point2[SAMPLING_SIZE];
+    /** number of edge points for this segment */
+    gint npoints;
+
+    /* repr */
+    Inkscape::XML::Node *repr;
+
+    /* Eraser */
+    NR::Point cur;
+    NR::Point vel;
+    double vel_max;
+    NR::Point acc;
+    NR::Point ang;
+    NR::Point last;
+    NR::Point del;
+    /* extended input data */
+    gdouble pressure;
+    gdouble xtilt;
+    gdouble ytilt;
+    /* attributes */
+    guint dragging : 1;           /* mouse state: mouse is dragging */
+    guint usepressure : 1;
+    guint usetilt : 1;
+    double mass, drag;
+    double angle;
+    double width;
+
+    double vel_thin;
+    double flatness;
+    double tremor;
+    double cap_rounding;
+
+    Inkscape::MessageContext *_message_context;
+
+    bool is_drawing;
+
+    /** uses absolute width independent of zoom */
+    bool abs_width;
+};
+
+struct SPEraserContextClass
+{
+    SPEventContextClass parent_class;
+};
+
+GtkType sp_eraser_context_get_type(void);
+
+#endif // SP_ERASER_CONTEXT_H_SEEN
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :