diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:24:48 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:24:48 +0000 |
commit | cca66b9ec4e494c1d919bff0f71a820d8afab1fa (patch) | |
tree | 146f39ded1c938019e1ed42d30923c2ac9e86789 /src/ui/tool/transform-handle-set.h | |
parent | Initial commit. (diff) | |
download | inkscape-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>
Diffstat (limited to '')
-rw-r--r-- | src/ui/tool/transform-handle-set.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/src/ui/tool/transform-handle-set.h b/src/ui/tool/transform-handle-set.h new file mode 100644 index 0000000..4b6877c --- /dev/null +++ b/src/ui/tool/transform-handle-set.h @@ -0,0 +1,147 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/** @file + * Affine transform handles component + */ +/* Authors: + * Krzysztof KosiĆski <tweenk.pl@gmail.com> + * Jon A. Cruz <jon@joncruz.org> + * + * Copyright (C) 2009 Authors + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#ifndef SEEN_UI_TOOL_TRANSFORM_HANDLE_SET_H +#define SEEN_UI_TOOL_TRANSFORM_HANDLE_SET_H + +#include <memory> +#include <gdk/gdk.h> +#include <2geom/forward.h> +#include "ui/tool/commit-events.h" +#include "ui/tool/manipulator.h" +#include "ui/tool/control-point.h" +#include "enums.h" +#include "snap-candidate.h" + +class SPDesktop; + +namespace Inkscape { + +class CanvasItemGroup; +class CanvasItemRect; + +namespace UI { + +class RotateHandle; +class SkewHandle; +class ScaleCornerHandle; +class ScaleSideHandle; +class RotationCenter; + +class TransformHandleSet : public Manipulator { +public: + + enum Mode { + MODE_SCALE, + MODE_ROTATE_SKEW + }; + + TransformHandleSet(SPDesktop *d, Inkscape::CanvasItemGroup *th_group); + ~TransformHandleSet() override; + bool event(Inkscape::UI::Tools::ToolBase *, GdkEvent *) override; + + bool visible() const { return _visible; } + Mode mode() const { return _mode; } + Geom::Rect bounds() const; + void setVisible(bool v); + + /** Sets the mode of transform handles (scale or rotate). */ + void setMode(Mode m); + + void setBounds(Geom::Rect const &, bool preserve_center = false); + + bool transforming() { return _in_transform; } + + ControlPoint const &rotationCenter() const; + ControlPoint &rotationCenter(); + + sigc::signal<void, Geom::Affine const &> signal_transform; + sigc::signal<void, CommitEvent> signal_commit; + +private: + + void _emitTransform(Geom::Affine const &); + void _setActiveHandle(ControlPoint *h); + void _clearActiveHandle(); + + /** Update the visibility of transformation handles according to settings and the dimensions + * of the bounding box. It hides the handles that would have no effect or lead to + * discontinuities. Additionally, side handles for which there is no space are not shown. + */ + void _updateVisibility(bool v); + + // TODO unions must GO AWAY: + union { + ControlPoint *_handles[17]; + struct { + ScaleCornerHandle *_scale_corners[4]; + ScaleSideHandle *_scale_sides[4]; + RotateHandle *_rot_corners[4]; + SkewHandle *_skew_sides[4]; + RotationCenter *_center; + }; + }; + + ControlPoint *_active; + Inkscape::CanvasItemGroup *_transform_handle_group; + Inkscape::CanvasItemRect *_trans_outline; + Mode _mode; + bool _in_transform; + bool _visible; + friend class TransformHandle; + friend class RotationCenter; +}; + +/** Base class for node transform handles to simplify implementation. */ +class TransformHandle : public ControlPoint +{ +public: + TransformHandle(TransformHandleSet &th, SPAnchorType anchor, Inkscape::CanvasItemCtrlType type); + void getNextClosestPoint(bool reverse); + +protected: + virtual void startTransform() {} + virtual void endTransform() {} + virtual Geom::Affine computeTransform(Geom::Point const &pos, GdkEventMotion *event) = 0; + virtual CommitEvent getCommitEvent() = 0; + + Geom::Affine _last_transform; + Geom::Point _origin; + TransformHandleSet &_th; + std::vector<Inkscape::SnapCandidatePoint> _snap_points; + std::vector<Inkscape::SnapCandidatePoint> _unselected_points; + std::vector<Inkscape::SnapCandidatePoint> _all_snap_sources_sorted; + std::vector<Inkscape::SnapCandidatePoint>::iterator _all_snap_sources_iter; + +private: + bool grabbed(GdkEventMotion *) override; + void dragged(Geom::Point &new_pos, GdkEventMotion *event) override; + void ungrabbed(GdkEventButton *) override; + + static ColorSet thandle_cset; +}; + +} // namespace UI +} // namespace Inkscape + +#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 : |