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An SVG keeps every picture at full resolution, whatever size it is drawn at: a folio with 22 phone photos shown at a tenth of their size gave a 270 MB SVG and took 65 s to write, most of it compressing the photos again. The export dialog gets "SVG: smaller pictures" (off by default, kept with the other export settings), and --export-svg gets --svg-small-pictures. With it, a picture is stored at four times the size it is drawn at when that is smaller than the picture; smaller pictures stay whole. Four times is about 375 dpi on a printed folio. The exporter sets Diagram::smallPictures() for its own drawing only, so screen, print, PDF and PNG are unchanged. It is not part of applyProperties(), which every format uses. On that project: --export-svg 84.9 s -> 34.5 s (opening is 20 s of both), 270 MB -> 57 MB, peak memory 2.45 -> 1.86 GB. Rendered at twice the folio size, the two SVGs differ by more than 32/255 on 0.23 % of pixels, along photo detail. tst_svgsmallpictures: an 800x600 picture drawn at 0.1 is stored at 320x240 with the option, through --export-svg and through the dialog's QPicture route, and at 800x600 without it; a 40x30 picture stays whole. It fails when the factor is changed. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
59 lines
2.4 KiB
C++
59 lines
2.4 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 EXPORT_PROPERTIES_H
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#define EXPORT_PROPERTIES_H
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#include <QtCore>
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#include "qet.h"
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/**
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This class is a container for various options used when printing or
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exporting a diagram as an image file.
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*/
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class ExportProperties {
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// constructeur, destructeur
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public:
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ExportProperties();
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virtual ~ExportProperties();
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// methods
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public:
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void toSettings (QSettings &, const QString & = QString()) const;
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void fromSettings(QSettings &, const QString & = QString());
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static ExportProperties defaultExportProperties ();
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static ExportProperties defaultPrintProperties ();
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// attributes
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public:
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QDir destination_directory; ///< Target directory for generated files
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QString format; ///< Image format of generated files
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bool draw_grid; ///< Whether to render the diagram grid
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bool draw_guides; ///< Whether to render the diagram guides
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bool draw_border; ///< Whether to render the border (along with rows/columns headers)
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bool draw_titleblock; ///< Whether to render the title block
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bool draw_terminals; ///< Whether to render terminals
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bool draw_terminal_names; ///< Whether to render terminal names/labels
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bool draw_bg_transparent; ///< Whether to use transparency for SVG-Export
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bool draw_colored_conductors; ///< Whether to render conductors colors
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bool dxf_blocks; ///< DXF: each symbol as a block, placed with an INSERT
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bool dxf_attributes; ///< DXF, with dxf_blocks: a symbol's texts as attributes of its INSERT
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bool svg_small_pictures; ///< SVG: pictures at most 4x the size they are drawn, not full resolution
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QET::DiagramArea exported_area; ///< Area of diagrams to be rendered
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};
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#endif
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