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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_printviewportrenderer.h"
#include "lc_graphicviewport.h"
#include "rs_entitycontainer.h"
#include "rs_math.h"
#include "rs_painter.h"
class RS_EntityContainer;
LC_PrintViewportRenderer::LC_PrintViewportRenderer(LC_GraphicViewport *viewport, RS_Painter* p)
:LC_GraphicViewportRenderer(viewport, nullptr)
,painter{p}
{
setBackground({255,255,255});
}
void LC_PrintViewportRenderer::doRender() {
setupPainter(painter);
RS_EntityContainer *container = viewport->getContainer();
container->draw(painter);
}
void LC_PrintViewportRenderer::renderEntity(RS_Painter *painter, RS_Entity *e) {
#ifdef DEBUG_RENDERING
isVisibleTimer.start();
#endif
// entity is not visible:
bool visible = e->isVisible();
#ifdef DEBUG_RENDERING
isVisibleTime += isVisibleTimer.nsecsElapsed();
#endif
if (!visible) {
return;
}
#ifdef DEBUG_RENDERING
isConstructionTimer.start();
#endif
bool constructionEntity = e->isConstruction();
#ifdef DEBUG_RENDERING
isConstructionTime += isConstructionTimer.nsecsElapsed();
#endif
// do not draw construction layer on print preview or print
if (!e->isPrint() || constructionEntity)
return;
if (isOutsideOfBoundingClipRect(e, constructionEntity)) {
return;
}
setPenForPrintingEntity(painter, e);
justDrawEntity(painter, e);
}
void LC_PrintViewportRenderer::setPenForPrintingEntity(RS_Painter *painter, RS_Entity *e) {
#ifdef DEBUG_RENDERING
setPenTimer.start();
#endif
// Getting pen from entity (or layer)
RS_Pen pen = e->getPenResolved();
RS_Pen originalPen = pen;
double patternOffset = painter->currentDashOffset();
if (lastPaintEntityPen.isSameAs(pen, patternOffset)) {
return;
}
// Avoid negative widths
double width = pen.getWidth();
// int w = std::max(static_cast<int>(pen.getWidth()), 0);
// - Scale pen width.
// - By default pen width is not scaled on print and print preview.
// This is the standard (AutoCAD like) behaviour.
// bug# 3437941
// ------------------------------------------------------------
if (pen.getAlpha() == 1.0) {
if (width >0) {
double wf = 1.0; // Width factor.
if (paperScale > RS_TOLERANCE) {
if (m_scaleLineWidth) {
wf = defaultWidthFactor;
} else {
wf = 1.0 / paperScale;
}
}
double screenWidth = painter->toGuiDX(width * unitFactor100 * wf);
/*// prevent drawing with 1-width which is slow:
if (RS_Math::round(pen.getScreenWidth()) == 1) {
pen.setScreenWidth(0.0);
}*/
// fixme - not sure about this check. However, without it, lines will stay transparent and then disappear on zooming out.
// Probably some other threshold value (instead 1) should be used?
if (screenWidth < 1){
screenWidth = 0.0;
}
pen.setScreenWidth(screenWidth);
}
else{
pen.setScreenWidth(0.0);
}
}
else{
// fixme - if we'll support transparency, add necessary processing there
if (RS_Math::round(pen.getScreenWidth()) == 1) {
pen.setScreenWidth(0.0);
}
}
RS_Color penColor = pen.getColor();
if (penColor.isEqualIgnoringFlags(m_colorBackground) ||
(penColor.toIntColor() == RS_Color::Black && penColor.colorDistance(m_colorBackground) < RS_Color::MinColorDistance)) {
pen.setColor(m_colorForeground);
}
if (pen.getLineType() != RS2::SolidLine){
pen.setDashOffset(patternOffset * defaultWidthFactor);
}
if (e->getFlag(RS2::FlagTransparent) ) {
pen.setColor(m_colorBackground);
}
// we store original pen as last painted, not resolved one - since original pen lead to resulting resolved and may be used by the next entity
lastPaintEntityPen.updateBy(originalPen);
painter->setPen(pen);
#ifdef DEBUG_RENDERING
setPenTime += setPenTimer.nsecsElapsed();
#endif
}
void LC_PrintViewportRenderer::loadSettings() {
LC_GraphicViewportRenderer::loadSettings();
setBackground({255,255,255});
}
void LC_PrintViewportRenderer::setupPainter(RS_Painter* painter) {
LC_GraphicViewportRenderer::setupPainter(painter);
painter->setDrawingMode(drawingMode);
// fixme - sand - paperspace - disabling UCS for print - for now, restore later
painter->disableUCS();
}
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