Adding upstream version 1.3+ds.upstream/1.3+dsupstream

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

1 files changed, 153 insertions, 0 deletions

diff --git a/src/display/drawing-context.h b/src/display/drawing-context.h
new file mode 100644
index 0000000..ec488ac
--- /dev/null
+++ b/src/display/drawing-context.h
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * @file
+ * Cairo drawing context with Inkscape extensions.
+ *//*
+ * 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_CONTEXT_H
+#define SEEN_INKSCAPE_DISPLAY_DRAWING_CONTEXT_H
+
+#include <2geom/rect.h>
+#include <2geom/transforms.h>
+#include <boost/utility.hpp>
+#include <cairo.h>
+typedef unsigned int guint32;
+
+namespace Inkscape {
+
+class DrawingSurface;
+
+class DrawingContext
+    : boost::noncopyable
+{
+public:
+    class Save {
+    public:
+        Save();
+        Save(DrawingContext &dc);
+        ~Save();
+        void save(DrawingContext &dc);
+    private:
+        DrawingContext *_dc;
+    };
+
+    DrawingContext(cairo_t *ct, Geom::Point const &origin);
+    DrawingContext(cairo_surface_t *surface, Geom::Point const &origin);
+    DrawingContext(DrawingSurface &s);
+    ~DrawingContext();
+    
+    void save() { cairo_save(_ct); }
+    void restore() { cairo_restore(_ct); }
+    void pushGroup() { cairo_push_group(_ct); }
+    void pushAlphaGroup() { cairo_push_group_with_content(_ct, CAIRO_CONTENT_ALPHA); }
+    void popGroupToSource() { cairo_pop_group_to_source(_ct); }
+
+    void transform(Geom::Affine const &trans);
+    void translate(Geom::Point const &t) { cairo_translate(_ct, t[Geom::X], t[Geom::Y]); } // todo: take Translate
+    void translate(double dx, double dy) { cairo_translate(_ct, dx, dy); }
+    void scale(Geom::Scale const &s) { cairo_scale(_ct, s[Geom::X], s[Geom::Y]); }
+    void scale(double sx, double sy) { cairo_scale(_ct, sx, sy); }
+    void device_to_user_distance(double &dx, double &dy) { cairo_device_to_user_distance(_ct, &dx, &dy); }
+    void user_to_device_distance(double &dx, double &dy) { cairo_user_to_device_distance(_ct, &dx, &dy); }
+
+    void moveTo(Geom::Point const &p) { cairo_move_to(_ct, p[Geom::X], p[Geom::Y]); }
+    void lineTo(Geom::Point const &p) { cairo_line_to(_ct, p[Geom::X], p[Geom::Y]); }
+    void curveTo(Geom::Point const &p1, Geom::Point const &p2, Geom::Point const &p3) {
+        cairo_curve_to(_ct, p1[Geom::X], p1[Geom::Y], p2[Geom::X], p2[Geom::Y], p3[Geom::X], p3[Geom::Y]);
+    }
+    void arc(Geom::Point const &center, double radius, Geom::AngleInterval const &angle);
+    void closePath() { cairo_close_path(_ct); }
+    void rectangle(Geom::Rect const &r) {
+        cairo_rectangle(_ct, r.left(), r.top(), r.width(), r.height());
+    }
+    void rectangle(Geom::IntRect const &r) {
+        cairo_rectangle(_ct, r.left(), r.top(), r.width(), r.height());
+    }
+    // Used in drawing-text.cpp to overwrite glyphs, which have the opposite path rotation as a regular rect
+    void revrectangle(Geom::Rect const &r) {
+        cairo_move_to (    _ct, r.left(), r.top()      );
+        cairo_rel_line_to (_ct, 0,        r.height()   );
+        cairo_rel_line_to (_ct,           r.width(), 0 );
+        cairo_rel_line_to (_ct, 0,       -r.height()   );
+        cairo_close_path ( _ct);
+    }
+    void revrectangle(Geom::IntRect const &r) {
+        cairo_move_to (    _ct, r.left(), r.top()      );
+        cairo_rel_line_to (_ct, 0,        r.height()   );
+        cairo_rel_line_to (_ct,           r.width(), 0 );
+        cairo_rel_line_to (_ct, 0,       -r.height()   );
+        cairo_close_path ( _ct);
+    }
+    void newPath() { cairo_new_path(_ct); }
+    void newSubpath() { cairo_new_sub_path(_ct); }
+    void path(Geom::PathVector const &pv);
+
+    void paint(double alpha = 1.0);
+    void fill() { cairo_fill(_ct); }
+    void fillPreserve() { cairo_fill_preserve(_ct); }
+    void stroke() { cairo_stroke(_ct); }
+    void strokePreserve() { cairo_stroke_preserve(_ct); }
+    void clip() { cairo_clip(_ct); }
+
+    void setLineWidth(double w) { cairo_set_line_width(_ct, w); }
+    void setHairline();
+    void setLineCap(cairo_line_cap_t cap) { cairo_set_line_cap(_ct, cap); }
+    void setLineJoin(cairo_line_join_t join) { cairo_set_line_join(_ct, join); }
+    void setMiterLimit(double miter) { cairo_set_miter_limit(_ct, miter); }
+    void setFillRule(cairo_fill_rule_t rule) { cairo_set_fill_rule(_ct, rule); }
+    void setOperator(cairo_operator_t op) { cairo_set_operator(_ct, op); }
+    cairo_operator_t getOperator() { return cairo_get_operator(_ct); }
+    void setTolerance(double tol) { cairo_set_tolerance(_ct, tol); }
+    void setSource(cairo_pattern_t *source) { cairo_set_source(_ct, source); }
+    void setSource(cairo_surface_t *surface, double x, double y) {
+        cairo_set_source_surface(_ct, surface, x, y);
+    }
+    void setSource(double r, double g, double b, double a = 1.0) {
+        cairo_set_source_rgba(_ct, r, g, b, a);
+    }
+    void setSource(guint32 rgba);
+    void setSource(DrawingSurface *s);
+
+    void patternSetFilter(cairo_filter_t filter) {
+        cairo_pattern_set_filter(cairo_get_source(_ct), filter);
+    }
+    void patternSetExtend(cairo_extend_t extend) { cairo_pattern_set_extend(cairo_get_source(_ct), extend); }
+
+    Geom::Rect targetLogicalBounds() const;
+
+    cairo_t *raw() { return _ct; }
+    cairo_surface_t *rawTarget() { return cairo_get_group_target(_ct); }
+
+    DrawingSurface *surface() { return _surface; } // Needed to find scale in drawing-item.cpp
+
+private:
+    DrawingContext(cairo_t *ct, DrawingSurface *surface, bool destroy);
+
+    cairo_t *_ct;
+    DrawingSurface *_surface;
+    bool _delete_surface;
+    bool _restore_context;
+
+    friend class DrawingSurface;
+};
+
+} // end namespace Inkscape
+
+#endif // !SEEN_INKSCAPE_DISPLAY_DRAWING_ITEM_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 :