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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:24:48 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:24:48 +0000
commitcca66b9ec4e494c1d919bff0f71a820d8afab1fa (patch)
tree146f39ded1c938019e1ed42d30923c2ac9e86789 /src/object/sp-gradient.h
parentInitial commit. (diff)
downloadinkscape-cca66b9ec4e494c1d919bff0f71a820d8afab1fa.tar.xz
inkscape-cca66b9ec4e494c1d919bff0f71a820d8afab1fa.zip
Adding upstream version 1.2.2.upstream/1.2.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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-rw-r--r--src/object/sp-gradient.h245
1 files changed, 245 insertions, 0 deletions
diff --git a/src/object/sp-gradient.h b/src/object/sp-gradient.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_GRADIENT_H
+#define SEEN_SP_GRADIENT_H
+/*
+ * Authors:
+ * Lauris Kaplinski <lauris@kaplinski.com>
+ * Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
+ * Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyrigt (C) 2010 Jon A. Cruz
+ * Copyright (C) 2007 Johan Engelen
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <2geom/affine.h>
+#include <cstddef>
+#include <glibmm/ustring.h>
+#include <sigc++/connection.h>
+#include <vector>
+
+#include "sp-paint-server.h"
+#include "sp-gradient-spread.h"
+#include "sp-gradient-units.h"
+#include "sp-gradient-vector.h"
+#include "sp-mesh-array.h"
+
+class SPGradientReference;
+class SPStop;
+
+enum SPGradientType {
+ SP_GRADIENT_TYPE_UNKNOWN,
+ SP_GRADIENT_TYPE_LINEAR,
+ SP_GRADIENT_TYPE_RADIAL,
+ SP_GRADIENT_TYPE_MESH
+};
+
+enum SPGradientState {
+ SP_GRADIENT_STATE_UNKNOWN,
+ SP_GRADIENT_STATE_VECTOR,
+ SP_GRADIENT_STATE_PRIVATE
+};
+
+enum GrPointType {
+ POINT_LG_BEGIN = 0, //start enum at 0 (for indexing into gr_knot_shapes array for example)
+ POINT_LG_END,
+ POINT_LG_MID,
+ POINT_RG_CENTER,
+ POINT_RG_R1,
+ POINT_RG_R2,
+ POINT_RG_FOCUS,
+ POINT_RG_MID1,
+ POINT_RG_MID2,
+ POINT_MG_CORNER,
+ POINT_MG_HANDLE,
+ POINT_MG_TENSOR,
+ // insert new point types here.
+
+ POINT_G_INVALID
+};
+
+namespace Inkscape {
+
+enum PaintTarget {
+ FOR_FILL,
+ FOR_STROKE
+};
+
+/**
+ * Convenience function to access a common vector of all enum values.
+ */
+std::vector<PaintTarget> const &allPaintTargets();
+
+} // namespace Inkscape
+
+/**
+ * Gradient
+ *
+ * Implement spread, stops list
+ * \todo fixme: Implement more here (Lauris)
+ */
+class SPGradient : public SPPaintServer {
+public:
+ SPGradient();
+ ~SPGradient() override;
+
+private:
+ /** gradientUnits attribute */
+ SPGradientUnits units;
+ unsigned int units_set : 1;
+public:
+
+ /** gradientTransform attribute */
+ Geom::Affine gradientTransform;
+ unsigned int gradientTransform_set : 1;
+
+private:
+ /** spreadMethod attribute */
+ SPGradientSpread spread;
+ unsigned int spread_set : 1;
+
+ /** Gradient stops */
+ unsigned int has_stops : 1;
+
+ /** Gradient patches */
+ unsigned int has_patches : 1;
+
+public:
+ /** Reference (href) */
+ SPGradientReference *ref;
+
+ /** State in Inkscape gradient system */
+ unsigned int state;
+
+ /** Linear and Radial Gradients */
+
+ /** Composed vector */
+ SPGradientVector vector;
+
+ sigc::connection modified_connection;
+
+ bool hasStops() const;
+
+ SPStop* getFirstStop();
+ int getStopCount() const;
+
+ bool isEquivalent(SPGradient *b);
+ bool isAligned(SPGradient *b);
+
+ /** Mesh Gradients **************/
+
+ /** Composed array (for mesh gradients) */
+ SPMeshNodeArray array;
+ SPMeshNodeArray array_smoothed; // Smoothed version of array
+
+ bool hasPatches() const;
+
+
+ /** All Gradients **************/
+ bool isUnitsSet() const;
+ SPGradientUnits getUnits() const;
+ void setUnits(SPGradientUnits units);
+
+
+ bool isSpreadSet() const;
+ SPGradientSpread getSpread() const;
+
+/**
+ * Returns private vector of given gradient (the gradient at the end of the href chain which has
+ * stops), optionally normalizing it.
+ *
+ * \pre SP_IS_GRADIENT(gradient).
+ * \pre There exists a gradient in the chain that has stops.
+ */
+ SPGradient *getVector(bool force_private = false);
+ SPGradient const *getVector(bool force_private = false) const
+ {
+ return const_cast<SPGradient *>(this)->getVector(force_private);
+ }
+
+ /**
+ * Returns private mesh of given gradient (the gradient at the end of the href chain which has
+ * patches), optionally normalizing it.
+ */
+ SPGradient *getArray(bool force_private = false);
+
+ //static GType getType();
+
+ /** Forces vector to be built, if not present (i.e. changed) */
+ void ensureVector();
+
+ /** Forces array (mesh) to be built, if not present (i.e. changed) */
+ void ensureArray();
+
+ /**
+ * Set spread property of gradient and emit modified.
+ */
+ void setSpread(SPGradientSpread spread);
+
+ SPGradientSpread fetchSpread();
+ SPGradientUnits fetchUnits();
+
+ void setSwatch(bool swatch = true);
+
+ bool isSolid() const;
+
+ static void gradientRefModified(SPObject *href, unsigned int flags, SPGradient *gradient);
+ static void gradientRefChanged(SPObject *old_ref, SPObject *ref, SPGradient *gr);
+
+ /* Gradient repr methods */
+ void repr_write_vector();
+ void repr_clear_vector();
+
+ cairo_pattern_t *create_preview_pattern(double width);
+
+ /** Transforms to/from gradient position space in given environment */
+ Geom::Affine get_g2d_matrix(Geom::Affine const &ctm,
+ Geom::Rect const &bbox) const;
+ Geom::Affine get_gs2d_matrix(Geom::Affine const &ctm,
+ Geom::Rect const &bbox) const;
+ void set_gs2d_matrix(Geom::Affine const &ctm, Geom::Rect const &bbox,
+ Geom::Affine const &gs2d);
+
+private:
+ bool invalidateVector();
+ bool invalidateArray();
+ void rebuildVector();
+ void rebuildArray();
+
+protected:
+ void build(SPDocument *document, Inkscape::XML::Node *repr) override;
+ void release() override;
+ void modified(unsigned int flags) override;
+ Inkscape::XML::Node* write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, unsigned int flags) override;
+
+ void child_added(Inkscape::XML::Node *child, Inkscape::XML::Node *ref) override;
+ void remove_child(Inkscape::XML::Node *child) override;
+
+ void set(SPAttr key, char const *value) override;
+};
+
+void
+sp_gradient_pattern_common_setup(cairo_pattern_t *cp,
+ SPGradient *gr,
+ Geom::OptRect const &bbox,
+ double opacity);
+
+
+MAKE_SP_OBJECT_DOWNCAST_FUNCTIONS(SP_GRADIENT, SPGradient)
+MAKE_SP_OBJECT_TYPECHECK_FUNCTIONS(SP_IS_GRADIENT, SPGradient)
+
+#endif // SEEN_SP_GRADIENT_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 :