Adding upstream version 1.2.2.upstream/1.2.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 132 insertions, 0 deletions

diff --git a/src/ui/tools/eraser-tool.h b/src/ui/tools/eraser-tool.h
new file mode 100644
index 0000000..2c9377a
--- /dev/null
+++ b/src/ui/tools/eraser-tool.h
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef ERASER_TOOL_H_SEEN
+#define ERASER_TOOL_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 v2+, read the file 'COPYING' for more information.
+ */
+
+#include <2geom/point.h>
+
+#include "message-stack.h"
+#include "style.h"
+#include "ui/tools/dynamic-base.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+enum class EraserToolMode
+{
+    DELETE,
+    CUT,
+    CLIP
+};
+extern EraserToolMode const DEFAULT_ERASER_MODE;
+
+class EraserTool : public DynamicBase {
+
+private:
+    // non-static data:
+    EraserToolMode mode = DEFAULT_ERASER_MODE;
+    bool nowidth = false;
+    std::vector<MessageId> _our_messages;
+
+    // static data:
+    inline static guint32 const trace_color_rgba   = 0xff0000ff; // RGBA red
+    inline static SPWindRule const trace_wind_rule = SP_WIND_RULE_EVENODD;
+
+    inline static double const tolerance = 0.1;
+
+    inline static double const epsilon       = 0.5e-6;
+    inline static double const epsilon_start = 0.5e-2;
+    inline static double const vel_start     = 1e-5;
+
+    inline static double const drag_default = 1.0;
+    inline static double const drag_min     = 0.0;
+    inline static double const drag_max     = 1.0;
+
+    inline static double const min_pressure     = 0.0;
+    inline static double const max_pressure     = 1.0;
+    inline static double const default_pressure = 1.0;
+
+    inline static double const min_tilt     = -1.0;
+    inline static double const max_tilt     = 1.0;
+    inline static double const default_tilt = 0.0;
+
+public:
+    // public member functions
+    EraserTool(SPDesktop *desktop);
+    ~EraserTool() override;
+    bool root_handler(GdkEvent *event) final;
+
+    using Error = std::uint64_t;
+    inline static Error const ALL_GOOD      = 0x0;
+    inline static Error const NOT_IN_BOUNDS = 0x1 << 0;
+    inline static Error const NON_EXISTENT  = 0x1 << 1;
+    inline static Error const NO_AREA_PATH  = 0x1 << 2;
+    inline static Error const RASTER_IMAGE  = 0x1 << 3;
+    inline static Error const ERROR_GROUP   = 0x1 << 4;
+
+private:
+    // private member functions
+    void _reset(Geom::Point p);
+    void _extinput(GdkEvent *event);
+    bool _apply(Geom::Point p);
+    void _brush();
+    void _cancel();
+    void _clearCurrent();
+    void _setToAccumulated();
+    void _accumulate();
+    void _fitAndSplit(bool releasing);
+    void _drawTemporaryBox();
+    bool _handleKeypress(GdkEventKey const *key);
+    void _completeBezier(double tolerance_sq, bool releasing);
+    void _failedBezierFallback();
+    void _fitDrawLastPoint();
+    void _clipErase(SPItem *item, SPObject *parent, Geom::OptRect &eraser_box);
+    Error _cutErase(SPItem *item, Geom::OptRect const &eraser_bbox, std::vector<SPItem *> &survivers);
+    void _booleanErase(SPItem *erasee, std::vector<SPItem*> &survivers) const;
+    void _handleStrokeStyle(SPItem *item) const;
+    void _updateMode();
+    void _removeTemporarySegments();
+    void _setStatusBarMessage(char *message);
+    void _clearStatusBar();
+
+    static void _generateNormalDist2(double &r1, double &r2);
+    static void _addCap(SPCurve &curve, Geom::Point const &pre, Geom::Point const &from, Geom::Point const &to,
+                        Geom::Point const &post, double rounding);
+    static bool _isStraightSegment(SPItem *path);
+    static Error _uncuttableItemType(SPItem *item);
+};
+
+} // namespace Tools
+} // namespace UI
+} // namespace Inkscape
+
+#endif // ERASER_TOOL_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:fileencoding=utf-8:textwidth=99 :