File size: 4,794 Bytes
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* **************************************************************************
* This file is part of the LibreCAD project, a 2D CAD program
*
* Copyright (C) 2025 LibreCAD.org
* Copyright (C) 2025 sand1024
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* *********************************************************************
*/
#include "lc_imageexporter.h"
#include <QImageWriter>
#include <QSvgGenerator>
#include "lc_graphicviewport.h"
#include "lc_printviewportrenderer.h"
#include "rs_graphic.h"
#include "rs_painter.h"
LC_ImageExporter::LC_ImageExporter(QObject* parent)
: QObject{parent} {
}
// fixme - sand - files - restore - so far this is just a direct port from application window. Refactor later, add more features!
bool LC_ImageExporter::exportToImage(RS_Graphic* graphic, const ExportOptions& options) {
// fixme - sand - files = export improvement
// improve:
// 1) generic refactor
// 2) support of ucs?
// 3) export of the entire drawing/visible area?
// 4) custom background color (i.e transparent)?
// 5) only visible layers(?)
bool exportToSvg = options.format.toLower() == "svg";
if (exportToSvg) {
return exportGraphicToSVG(graphic, options);
}
else {
return exportGraphicToImage(graphic,options);
}
}
bool LC_ImageExporter::exportGraphicToSVG(RS_Graphic* graphic, const ExportOptions& options) {
QSize size = options.size;
QSvgGenerator svgGenerator;
prepareSVGGenerator(options, size, svgGenerator);
QPaintDevice* buffer = &svgGenerator;
renderGraphic(graphic, options, buffer);
return true;
}
bool LC_ImageExporter::exportGraphicToImage(RS_Graphic* graphic, const ExportOptions& options) {
QSize size = options.size;
auto pixMap = QPixmap(size);
QPaintDevice* buffer = &pixMap;
renderGraphic(graphic, options, buffer);
return savePixmapToImage(options, pixMap);
}
bool LC_ImageExporter::savePixmapToImage(const LC_ImageExporter::ExportOptions& options, const QPixmap &pixMap) {
QImage img = pixMap.toImage();
QImageWriter iio;
iio.setFileName(options.fileName);
iio.setFormat(options.format.toLatin1());
bool ret = false;
if (iio.write(img)) {
ret = true;
}
else {
// QString error=iio.errorString();
// fixme - sand - files - add error reporting
}
return ret;
}
void LC_ImageExporter::renderGraphic(RS_Graphic* graphic, const LC_ImageExporter::ExportOptions& options, QPaintDevice* buffer) {
RS_Painter painter(buffer);
preparePainter(options, painter);
// fixme - sand - rework to more generic printing (add progress or confirmation ?)
LC_GraphicViewport viewport;
prepareViewport(graphic, options, viewport);
LC_PrintViewportRenderer renderer = LC_PrintViewportRenderer(&viewport, &painter);
renderer.setBackground(options.backgroundBlack ? Qt::black : Qt::white);
renderer.loadSettings();
renderer.render();
}
void LC_ImageExporter::preparePainter(const ExportOptions& options, RS_Painter& painter) {
bool black = options.backgroundBlack;
painter.setBackground(black ? Qt::black : Qt::white);
if (options.blackAndWhite) {
painter.setDrawingMode(black ? RS2::ModeWB : RS2::ModeBW);
}
painter.eraseRect(0, 0, options.size.width(), options.size.height());
}
void LC_ImageExporter::prepareSVGGenerator(const ExportOptions& options, const QSize size,
QSvgGenerator& svgGenerator) {
svgGenerator.setSize(size);
svgGenerator.setViewBox(QRectF(QPointF(0, 0), size));
svgGenerator.setFileName(options.fileName);
}
void LC_ImageExporter::prepareViewport(RS_Graphic* graphic, const ExportOptions& options, LC_GraphicViewport &viewport) {
viewport.setSize(options.size.width(), options.size.height());
auto borderWidth = options.borders.width();
auto borderHeight = options.borders.height();
viewport.setBorders(borderWidth, borderHeight, borderWidth, borderHeight);
viewport.setContainer(graphic);
viewport.zoomAuto(false);
viewport.loadSettings();
}
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