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-rw-r--r--src/ui/widget/attr-widget.h185
1 files changed, 185 insertions, 0 deletions
diff --git a/src/ui/widget/attr-widget.h b/src/ui/widget/attr-widget.h
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+++ b/src/ui/widget/attr-widget.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Authors:
+ * Nicholas Bishop <nicholasbishop@gmail.com>
+ * Rodrigo Kumpera <kumpera@gmail.com>
+ *
+ * Copyright (C) 2007 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef INKSCAPE_UI_WIDGET_ATTR_WIDGET_H
+#define INKSCAPE_UI_WIDGET_ATTR_WIDGET_H
+
+#include "attributes.h"
+#include "object/sp-object.h"
+#include "xml/node.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Widget {
+
+enum DefaultValueType
+{
+ T_NONE,
+ T_DOUBLE,
+ T_VECT_DOUBLE,
+ T_BOOL,
+ T_UINT,
+ T_CHARPTR
+};
+
+/**
+ * Very basic interface for classes that control attributes.
+ */
+class DefaultValueHolder
+{
+ DefaultValueType type;
+ union {
+ double d_val;
+ std::vector<double>* vt_val;
+ bool b_val;
+ unsigned int uint_val;
+ char* cptr_val;
+ } value;
+
+ //FIXME remove copy ctor and assignment operator as private to avoid double free of the vector
+public:
+ DefaultValueHolder () {
+ type = T_NONE;
+ }
+
+ DefaultValueHolder (double d) {
+ type = T_DOUBLE;
+ value.d_val = d;
+ }
+
+ DefaultValueHolder (std::vector<double>* d) {
+ type = T_VECT_DOUBLE;
+ value.vt_val = d;
+ }
+
+ DefaultValueHolder (char* c) {
+ type = T_CHARPTR;
+ value.cptr_val = c;
+ }
+
+ DefaultValueHolder (bool d) {
+ type = T_BOOL;
+ value.b_val = d;
+ }
+
+ DefaultValueHolder (unsigned int ui) {
+ type = T_UINT;
+ value.uint_val = ui;
+ }
+
+ ~DefaultValueHolder() {
+ if (type == T_VECT_DOUBLE)
+ delete value.vt_val;
+ }
+
+ unsigned int as_uint() {
+ g_assert (type == T_UINT);
+ return value.uint_val;
+ }
+
+ bool as_bool() {
+ g_assert (type == T_BOOL);
+ return value.b_val;
+ }
+
+ double as_double() {
+ g_assert (type == T_DOUBLE);
+ return value.d_val;
+ }
+
+ std::vector<double>* as_vector() {
+ g_assert (type == T_VECT_DOUBLE);
+ return value.vt_val;
+ }
+
+ char* as_charptr() {
+ g_assert (type == T_CHARPTR);
+ return value.cptr_val;
+ }
+};
+
+class AttrWidget
+{
+public:
+ AttrWidget(const SPAttr a, unsigned int value)
+ : _attr(a),
+ _default(value)
+ {}
+
+ AttrWidget(const SPAttr a, double value)
+ : _attr(a),
+ _default(value)
+ {}
+
+ AttrWidget(const SPAttr a, bool value)
+ : _attr(a),
+ _default(value)
+ {}
+
+ AttrWidget(const SPAttr a, char* value)
+ : _attr(a),
+ _default(value)
+ {}
+
+ AttrWidget(const SPAttr a)
+ : _attr(a),
+ _default()
+ {}
+
+ virtual ~AttrWidget()
+ = default;
+
+ virtual Glib::ustring get_as_attribute() const = 0;
+ virtual void set_from_attribute(SPObject*) = 0;
+
+ SPAttr get_attribute() const
+ {
+ return _attr;
+ }
+
+ sigc::signal<void>& signal_attr_changed()
+ {
+ return _signal;
+ }
+protected:
+ DefaultValueHolder* get_default() { return &_default; }
+ const gchar* attribute_value(SPObject* o) const
+ {
+ const gchar* name = (const gchar*)sp_attribute_name(_attr);
+ if(name && o) {
+ const gchar* val = o->getRepr()->attribute(name);
+ return val;
+ }
+ return nullptr;
+ }
+
+private:
+ const SPAttr _attr;
+ DefaultValueHolder _default;
+ sigc::signal<void> _signal;
+};
+
+}
+}
+}
+
+#endif
+
+/*
+ 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 :