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create/src/Gui/Flag.cpp
Markus Reitböck a72a0d6405 Gui: use CMake to generate precompiled headers on all platforms 
"Professional CMake" book suggest the following:

"Targets should build successfully with or without compiler support for precompiled headers. It
should be considered an optimization, not a requirement. In particular, do not explicitly include a
precompile header (e.g. stdafx.h) in the source code, let CMake force-include an automatically
generated precompile header on the compiler command line instead. This is more portable across
the major compilers and is likely to be easier to maintain. It will also avoid warnings being
generated from certain code checking tools like iwyu (include what you use)."

Therefore, removed the "#include <PreCompiled.h>" from sources, also
there is no need for the "#ifdef _PreComp_" anymore
2025-09-14 09:47:03 +02:00

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/***************************************************************************
* Copyright (c) 2007 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
# include <QMenu>
# include <QMouseEvent>
# include <Inventor/nodes/SoCamera.h>
#include <Inventor/SbVec2s.h>
#include "Flag.h"
#include "View3DInventorViewer.h"
using namespace Gui;
/* TRANSLATOR Gui::Flag */
// TODO: Rename to Annotation
// Support transparency
// Embed complete widgets
Flag::Flag(QWidget* parent)
: QOpenGLWidget(parent), coord(0.0f, 0.0f, 0.0f)
{
this->setFixedHeight(20);
setAutoFillBackground(true);
}
Flag::~Flag() = default;
void Flag::initializeGL()
{
const QPalette& p = this->palette();
QColor c(p.color(QPalette::Window));
glClearColor(c.redF(), c.greenF(), c.blueF(), c.alphaF());
}
void Flag::paintGL()
{
QOpenGLWidget::paintGL();
}
void Flag::paintEvent(QPaintEvent* e)
{
const QPalette& p = this->palette();
QColor c(p.color(QPalette::Text));
QPainter painter;
painter.begin(this);
painter.setRenderHint(QPainter::Antialiasing);
painter.fillRect(e->rect(), p.color(QPalette::Window));
painter.setPen(c);
painter.drawText(10, 15, this->text);
painter.end();
}
void Flag::resizeGL(int width, int height)
{
Q_UNUSED(width);
Q_UNUSED(height);
}
void Flag::setOrigin(const SbVec3f& v)
{
this->coord = v;
}
const SbVec3f& Flag::getOrigin() const
{
return this->coord;
}
void Flag::drawLine (View3DInventorViewer* v, int tox, int toy)
{
if (!isVisible())
return;
// Get position of line
QSize s = parentWidget()->size();
SbVec2s view(s.width(), s.height());
int fromx = pos().x();
int fromy = pos().y() + height()/2;
if (false) fromx += width();
GLPainter p;
p.begin(v->getGLWidget());
// the line
p.setLineWidth(1.0f);
p.drawLine(fromx, fromy, tox, toy);
// the point
p.setPointSize(3.0f);
p.drawPoint(tox, toy);
p.end();
}
void Flag::setText(const QString& t)
{
this->text = t;
}
void Flag::resizeEvent(QResizeEvent* e)
{
QOpenGLWidget::resizeEvent(e);
}
void Flag::mouseMoveEvent(QMouseEvent *e)
{
if (e->buttons() & Qt::LeftButton) {
#if QT_VERSION < QT_VERSION_CHECK(6,0,0)
move(e->globalPos() - dragPosition);
#else
move(e->globalPosition().toPoint() - dragPosition);
#endif
e->accept();
auto viewer = qobject_cast<View3DInventorViewer*>(parentWidget());
if (viewer)
viewer->getSoRenderManager()->scheduleRedraw();
}
}
void Flag::mousePressEvent(QMouseEvent *e)
{
if (e->button() == Qt::LeftButton) {
#if QT_VERSION < QT_VERSION_CHECK(6,0,0)
dragPosition = e->globalPos() - frameGeometry().topLeft();
#else
dragPosition = e->globalPosition().toPoint() - frameGeometry().topLeft();
#endif
e->accept();
}
}
void Flag::contextMenuEvent(QContextMenuEvent * e)
{
QMenu menu(this);
QAction* topleft = menu.addAction(tr("Top Left"));
topleft->setCheckable(true);
QAction* botleft = menu.addAction(tr("Bottom Left"));
botleft->setCheckable(true);
QAction* topright = menu.addAction(tr("Top Right"));
topright->setCheckable(true);
QAction* botright = menu.addAction(tr("Bottom Right"));
botright->setCheckable(true);
menu.addSeparator();
QAction* remove = menu.addAction(tr("Remove"));
QAction* select = menu.exec(e->globalPos());
if (remove == select)
this->deleteLater();
}
QSize Flag::sizeHint() const
{
int w = 100;
int h = 20;
QFontMetrics metric(this->font());
QRect r = metric.boundingRect(text);
w = std::max<int>(w, r.width()+20);
h = std::max<int>(h, r.height());
return {w, h};
}
// ------------------------------------------------------------------------
FlagLayout::FlagLayout(QWidget *parent, int margin, int spacing)
: QLayout(parent)
{
setContentsMargins(margin, margin, margin, margin);
setSpacing(spacing);
}
FlagLayout::FlagLayout(int spacing)
{
setSpacing(spacing);
}
FlagLayout::~FlagLayout()
{
QLayoutItem *l;
while ((l = takeAt(0)))
delete l;
}
void FlagLayout::addItem(QLayoutItem *item)
{
add(item, TopLeft);
}
void FlagLayout::addWidget(QWidget *widget, Position position)
{
add(new QWidgetItem(widget), position);
}
Qt::Orientations FlagLayout::expandingDirections() const
{
return Qt::Horizontal | Qt::Vertical;
}
bool FlagLayout::hasHeightForWidth() const
{
return false;
}
int FlagLayout::count() const
{
return list.size();
}
QLayoutItem *FlagLayout::itemAt(int index) const
{
ItemWrapper *wrapper = list.value(index);
if (wrapper)
return wrapper->item;
else
return nullptr;
}
QSize FlagLayout::minimumSize() const
{
return calculateSize(MinimumSize);
}
void FlagLayout::setGeometry(const QRect &rect)
{
int topHeight = 0;
int bottomHeight = 0;
QLayout::setGeometry(rect);
// left side
for (ItemWrapper *wrapper : list) {
QLayoutItem *item = wrapper->item;
Position position = wrapper->position;
if (position == TopLeft) {
topHeight += spacing();
item->setGeometry(QRect(rect.x() + spacing(), topHeight,
item->sizeHint().width(), item->sizeHint().height()));
topHeight += item->geometry().height();
} else if (position == BottomLeft) {
bottomHeight += item->geometry().height() + spacing();
item->setGeometry(QRect(rect.x() + spacing(), rect.height() - bottomHeight,
item->sizeHint().width(), item->sizeHint().height()));
}
}
// right side
topHeight = 0;
bottomHeight = 0;
for (ItemWrapper *wrapper : list) {
QLayoutItem *item = wrapper->item;
Position position = wrapper->position;
int rightpos = item->sizeHint().width() + spacing();
if (position == TopRight) {
topHeight += spacing();
item->setGeometry(QRect(rect.x() + rect.width() - rightpos, topHeight,
item->sizeHint().width(), item->sizeHint().height()));
topHeight += item->geometry().height();
} else if (position == BottomRight) {
bottomHeight += item->geometry().height() + spacing();
item->setGeometry(QRect(rect.x() + rect.width() - rightpos, rect.height() - bottomHeight,
item->sizeHint().width(), item->sizeHint().height()));
}
}
}
QSize FlagLayout::sizeHint() const
{
return calculateSize(SizeHint);
}
QLayoutItem *FlagLayout::takeAt(int index)
{
if (index >= 0 && index < list.size()) {
ItemWrapper *layoutStruct = list.takeAt(index);
return layoutStruct->item;
}
return nullptr;
}
void FlagLayout::add(QLayoutItem *item, Position position)
{
list.append(new ItemWrapper(item, position));
}
QSize FlagLayout::calculateSize(SizeType sizeType) const
{
QSize totalSize;
for (ItemWrapper *wrapper : list) {
QSize itemSize;
if (sizeType == MinimumSize)
itemSize = wrapper->item->minimumSize();
else // (sizeType == SizeHint)
itemSize = wrapper->item->sizeHint();
totalSize.rheight() += itemSize.height();
totalSize.rwidth() = qMax<int>(totalSize.width(),itemSize.width());
}
return totalSize;
}
TYPESYSTEM_SOURCE_ABSTRACT(Gui::GLFlagWindow, Gui::GLGraphicsItem)
GLFlagWindow::GLFlagWindow(View3DInventorViewer* view) : _viewer(view), _flagLayout(nullptr)
{
}
GLFlagWindow::~GLFlagWindow()
{
deleteFlags();
if (_flagLayout)
_flagLayout->deleteLater();
}
void GLFlagWindow::deleteFlags()
{
if (_flagLayout) {
int ct = _flagLayout->count();
for (int i=0; i<ct;i++) {
QWidget* flag = _flagLayout->itemAt(0)->widget();
if (flag) {
_flagLayout->removeWidget(flag);
flag->deleteLater();
}
}
if (ct > 0)
_viewer->getSoRenderManager()->scheduleRedraw();
}
}
void GLFlagWindow::addFlag(Flag* item, FlagLayout::Position pos)
{
if (!_flagLayout) {
_flagLayout = new FlagLayout(3);
_viewer->setLayout(_flagLayout);
}
item->setParent(_viewer);
_flagLayout->addWidget(item, pos);
item->show();
_viewer->getSoRenderManager()->scheduleRedraw();
}
void GLFlagWindow::removeFlag(Flag* item)
{
if (_flagLayout) {
_flagLayout->removeWidget(item);
_viewer->getSoRenderManager()->scheduleRedraw();
}
}
Flag* GLFlagWindow::getFlag(int index) const
{
if (_flagLayout) {
QWidget* flag = _flagLayout->itemAt(index)->widget();
return qobject_cast<Flag*>(flag);
}
return nullptr;
}
int GLFlagWindow::countFlags() const
{
if (_flagLayout) {
return _flagLayout->count();
}
return 0;
}
void GLFlagWindow::paintGL()
{
// draw lines for the flags
if (_flagLayout) {
// it can happen that the GL widget gets replaced internally (SoQt only, not with quarter) which
// causes to destroy the FlagLayout instance
int ct = _flagLayout->count();
const SbViewportRegion vp = _viewer->getSoRenderManager()->getViewportRegion();
SbVec2s size = vp.getViewportSizePixels();
float aspectratio = float(size[0])/float(size[1]);
SbViewVolume vv = _viewer->getSoRenderManager()->getCamera()->getViewVolume(aspectratio);
for (int i=0; i<ct;i++) {
Flag* flag = qobject_cast<Flag*>(_flagLayout->itemAt(i)->widget());
if (flag) {
SbVec3f pt = flag->getOrigin();
vv.projectToScreen(pt, pt);
int tox = (int)(pt[0] * size[0]);
int toy = (int)((1.0f-pt[1]) * size[1]);
flag->drawLine(_viewer, tox, toy);
}
}
}
}
#include "moc_Flag.cpp"
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