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Edit > Aligner > Aligner sur la grille, also in the selection's context menu and the command search, puts each selected item back where dragging it would have left it: symbols and pictures on the folio grid, free texts on the text grid. One undo step; wires follow their symbols. Symbols leave the grid through the fine nudge (Alt+arrow, 1 px), and nothing put them back: 508 of the 3,678 symbols in the example projects are off the 10 px grid. First stage of discussion #1069. The status bar says how many items moved, or that the selection was already on the grid, and how many locked items were left in place. Shapes are left out: they are made of several points and no single one is the obvious one to snap. The snap never reads the keyboard, unlike Diagram::snapToGrid(), so a user who binds the action to a shortcut with Ctrl gets the grid, not pixel rounding. The geometry is in alignment.h, tested by tst_alignment. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01G2d2Zi8BfrYRPX88zhaoFG
50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
/*
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Copyright 2006-2026 The QElectroTech Team
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This file is part of QElectroTech.
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QElectroTech is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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QElectroTech is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ALIGNMENT_H
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#define ALIGNMENT_H
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#include "textgrid.h"
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#include <QPointF>
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/**
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The geometry behind the align commands, kept free of any scene so it
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can be tested on its own.
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*/
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namespace Alignment
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{
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/**
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@return the movement that puts p on a grid of x_grid by y_grid,
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divided by divisor as TextGrid::snap() does, or a null point when
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p is already on it. Unlike Diagram::snapToGrid(), this never looks
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at the keyboard: a command run from a shortcut with Ctrl in it must
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not quietly round to the pixel instead.
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Less than a millionth of a pixel counts as on the grid: positions
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that went through arithmetic carry residues of that size, and
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qFuzzyIsNull() (1e-12) is too strict to absorb them.
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*/
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inline QPointF gridOffset(const QPointF &p, int x_grid, int y_grid, qreal divisor = 1)
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{
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const QPointF offset = TextGrid::snap(p, x_grid, y_grid, divisor) - p;
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auto clean = [](qreal v) { return qAbs(v) < 1e-6 ? 0.0 : v; };
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return QPointF(clean(offset.x()), clean(offset.y()));
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}
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}
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#endif // ALIGNMENT_H
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