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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_CANVAS_ITEM_GUIDELINE_H
#define SEEN_CANVAS_ITEM_GUIDELINE_H
/**
* A class to represent a control guide line.
*/
/*
* Authors:
* Tavmjong Bah - Rewrite of SPGuideLine
* Rafael Siejakowski - Tweaks to handle appearance
*
* Copyright (C) 2020-2022 the Authors.
*
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <glibmm/ustring.h>
#include <2geom/point.h>
#include <2geom/transforms.h>
#include "canvas-item.h"
#include "canvas-item-ctrl.h"
#include "canvas-item-ptr.h"
namespace Inkscape {
class CanvasItemGuideHandle;
class CanvasItemGuideLine final : public CanvasItem
{
public:
CanvasItemGuideLine(CanvasItemGroup *group, Glib::ustring label, Geom::Point const &origin, Geom::Point const &normal);
// Geometry
void set_origin(Geom::Point const &origin);
void set_normal(Geom::Point const &normal);
double closest_distance_to(Geom::Point const &p);
// Selection
bool contains(Geom::Point const &p, double tolerance = 0) override;
// Properties
void set_visible(bool visible) override;
void set_stroke(uint32_t color) override;
void set_label(Glib::ustring &&label);
void set_locked(bool locked);
void set_inverted(bool inverted);
// Getters
CanvasItemGuideHandle *dot() const;
protected:
~CanvasItemGuideLine() override = default;
void _update(bool propagate) override;
void _render(Inkscape::CanvasItemBuffer &buf) const override;
Geom::Point _origin;
Geom::Point _normal = Geom::Point(0, 1);
Glib::ustring _label;
bool _locked = true; // Flipped in constructor to trigger init of _origin_ctrl.
bool _inverted = false;
CanvasItemPtr<CanvasItemGuideHandle> _origin_ctrl;
static constexpr uint32_t CONTROL_LOCKED_COLOR = 0x00000080; // RGBA black semitranslucent
static constexpr double LABEL_SEP = 2.0; // Distance between the label and the origin control
};
// A handle ("dot") serving as draggable origin control
class CanvasItemGuideHandle final : public CanvasItemCtrl
{
public:
CanvasItemGuideHandle(CanvasItemGroup *group, Geom::Point const &pos, CanvasItemGuideLine *line);
double radius() const;
void set_size_via_index(int index) override;
protected:
~CanvasItemGuideHandle() override = default;
CanvasItemGuideLine *_my_line; // The guide line we belong to
// static data
static constexpr double SCALE = 0.55; // handle size relative to an auto-smooth node
static constexpr unsigned MINIMUM_SIZE = 7; // smallest handle size, must be an odd int
};
} // namespace Inkscape
#endif // SEEN_CANVAS_ITEM_GUIDELINE_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 :
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