1 files changed, 134 insertions, 0 deletions
diff --git a/src/display/drawing.h b/src/display/drawing.h
new file mode 100644
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--- /dev/null
+++ b/src/display/drawing.h
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * @file
+ * SVG drawing for display.
+ *//*
+ * Authors:
+ *   Krzysztof Kosiński <tweenk.pl@gmail.com>
+ *
+ * Copyright (C) 2011 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SEEN_INKSCAPE_DISPLAY_DRAWING_H
+#define SEEN_INKSCAPE_DISPLAY_DRAWING_H
+
+#include <2geom/rect.h>
+#include <boost/operators.hpp>
+#include <boost/utility.hpp>
+#include <set>
+#include <sigc++/sigc++.h>
+
+#include "display/drawing-item.h"
+#include "display/rendermode.h"
+#include "nr-filter-gaussian.h" // BLUR_QUALITY_BEST
+#include "nr-filter-colormatrix.h"
+
+typedef unsigned int guint32;
+
+namespace Inkscape {
+
+class DrawingItem;
+class CanvasItemDrawing;
+
+class Drawing
+    : boost::noncopyable
+{
+public:
+    struct OutlineColors {
+        guint32 paths;
+        guint32 clippaths;
+        guint32 masks;
+        guint32 images;
+    };
+
+    Drawing(Inkscape::CanvasItemDrawing *drawing = nullptr);
+    ~Drawing();
+
+    DrawingItem *root() { return _root; }
+    Inkscape::CanvasItemDrawing *getCanvasItemDrawing() { return _canvas_item_drawing; }
+    void setRoot(DrawingItem *item);
+
+    RenderMode renderMode() const;
+    ColorMode colorMode() const;
+    bool outline() const;
+    bool visibleHairlines() const;
+    bool outlineOverlay() const;
+    bool renderFilters() const;
+    int blurQuality() const;
+    int filterQuality() const;
+    void setRenderMode(RenderMode mode);
+    void setColorMode(ColorMode mode);
+    void setBlurQuality(int q);
+    void setFilterQuality(int q);
+    void setExact(bool e);
+    bool getExact() const { return _exact; };
+    void setOutlineSensitive(bool e);
+    bool getOutlineSensitive() const { return _outline_sensitive; };
+
+    Geom::OptIntRect const &cacheLimit() const;
+    void setCacheLimit(Geom::OptIntRect const &r);
+    void setCacheBudget(size_t bytes);
+
+    OutlineColors const &colors() const { return _colors; }
+
+    void setGrayscaleMatrix(double value_matrix[20]);
+
+    void update(Geom::IntRect const &area = Geom::IntRect::infinite(), unsigned flags = DrawingItem::STATE_ALL,
+                unsigned reset = 0);
+
+    void render(DrawingContext &dc, Geom::IntRect const &area, unsigned flags = 0, int antialiasing = -1);
+    DrawingItem *pick(Geom::Point const &p, double delta, unsigned flags);
+
+    void average_color(Geom::IntRect const &area, double &R, double &G, double &B, double &A);
+
+    sigc::signal<void, DrawingItem *> signal_request_update;
+    sigc::signal<void, Geom::IntRect const &> signal_request_render;
+    sigc::signal<void, DrawingItem *> signal_item_deleted;
+
+private:
+    void _pickItemsForCaching();
+
+    typedef std::list<CacheRecord> CandidateList;
+    bool _outline_sensitive = false;
+    DrawingItem *_root = nullptr;
+    std::set<DrawingItem *> _cached_items; // modified by DrawingItem::setCached()
+    CandidateList _candidate_items;        // keep this list always sorted with std::greater
+
+public:
+    // TODO: remove these temporarily public members
+    guint32 outlinecolor = 0x000000ff;
+    double delta = 0;
+
+private:
+    bool _exact = false;  // if true then rendering must be exact
+    RenderMode _rendermode = RenderMode::NORMAL;
+    ColorMode _colormode = ColorMode::NORMAL;
+    int _blur_quality = BLUR_QUALITY_BEST;
+    int _filter_quality = Filters::FILTER_QUALITY_BEST;
+    Geom::OptIntRect _cache_limit;
+
+    double _cache_score_threshold = 50000.0; ///< do not consider objects for caching below this score
+    size_t _cache_budget = 0;                ///< maximum allowed size of cache
+
+    OutlineColors _colors;
+    Filters::FilterColorMatrix::ColorMatrixMatrix _grayscale_colormatrix;
+    Inkscape::CanvasItemDrawing *_canvas_item_drawing = nullptr;
+
+    friend class DrawingItem;
+};
+
+} // end namespace Inkscape
+
+#endif // !SEEN_INKSCAPE_DRAWING_H
+
+/*
+  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 :