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658cdc8309cd4a9c3abfe480e7baba323e1fc41d
create/src/Gui/SoTextLabel.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) 2009 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 <FCConfig.h>
# ifdef FC_OS_WIN32
# include <windows.h>
# endif
# ifdef FC_OS_MACOSX
# include <OpenGL/gl.h>
# else
# include <GL/gl.h>
# endif
# include <QFontMetrics>
# include <QPainter>
# include <QPen>
# include <Inventor/actions/SoGLRenderAction.h>
# include <Inventor/bundles/SoMaterialBundle.h>
# include <Inventor/elements/SoLazyElement.h>
# include <Inventor/misc/SoState.h>
#include <Inventor/C/basic.h>
#include <Inventor/draggers/SoTranslate2Dragger.h>
#include <Inventor/elements/SoCullElement.h>
#include <Inventor/elements/SoFontNameElement.h>
#include <Inventor/elements/SoGLTextureEnabledElement.h>
#include <Inventor/elements/SoModelMatrixElement.h>
#include <Inventor/elements/SoProjectionMatrixElement.h>
#include <Inventor/elements/SoViewingMatrixElement.h>
#include <Inventor/elements/SoViewportRegionElement.h>
#include <Inventor/elements/SoViewVolumeElement.h>
#include <Inventor/elements/SoMultiTextureEnabledElement.h>
#include "SoTextLabel.h"
#include "SoFCInteractiveElement.h"
#include "Tools.h"
using namespace Gui;
SO_NODE_SOURCE(SoTextLabel)
void SoTextLabel::initClass()
{
SO_NODE_INIT_CLASS(SoTextLabel, SoText2, "Text2");
}
SoTextLabel::SoTextLabel()
{
SO_NODE_CONSTRUCTOR(SoTextLabel);
SO_NODE_ADD_FIELD(backgroundColor, (SbVec3f(1.0f,1.0f,1.0f)));
SO_NODE_ADD_FIELD(background, (true));
SO_NODE_ADD_FIELD(frameSize, (10.0f));
}
/**
* Renders the label.
*/
void SoTextLabel::GLRender(SoGLRenderAction *action)
{
if (!this->shouldGLRender(action))
return;
// only draw text without background
if (!this->background.getValue()) {
inherited::GLRender(action);
return;
}
SoState * state = action->getState();
state->push();
SoLazyElement::setLightModel(state, SoLazyElement::BASE_COLOR);
SbBox3f box;
SbVec3f center;
this->computeBBox(action, box, center);
if (!SoCullElement::cullTest(state, box, true)) {
SoMaterialBundle mb(action);
mb.sendFirst();
const SbMatrix & mat = SoModelMatrixElement::get(state);
const SbMatrix & projmatrix = (mat * SoViewingMatrixElement::get(state) *
SoProjectionMatrixElement::get(state));
const SbViewportRegion & vp = SoViewportRegionElement::get(state);
SbVec2s vpsize = vp.getViewportSizePixels();
// font stuff
SbName fontname = SoFontNameElement::get(state);
int lines = this->string.getNum();
// get left bottom corner of the label
SbVec3f nilpoint(0.0f, 0.0f, 0.0f);
projmatrix.multVecMatrix(nilpoint, nilpoint);
nilpoint[0] = (nilpoint[0] + 1.0f) * 0.5f * vpsize[0];
nilpoint[1] = (nilpoint[1] + 1.0f) * 0.5f * vpsize[1];
// Unfortunately, the size of the label is stored in the pimpl class of
// SoText2 which cannot be accessed directly. However, there is a trick
// to get the required information: set model, viewing and projection
// matrix to the identity matrix and also view volume to some default
// values. SoText2::computeBBox() then calls SoText2P::getQuad which
// returns the sizes in form of the bounding box. These values can be
// reverse-engineered to get width and height.
state->push();
SoModelMatrixElement::set(state,this,SbMatrix::identity());
SoViewingMatrixElement::set(state,this,SbMatrix::identity());
SoProjectionMatrixElement::set(state,this,SbMatrix::identity());
SbViewVolume vv;
vv.ortho(-1,1,-1,1,-1,1);
SoViewVolumeElement::set(state,this,vv);
SbBox3f box;
SbVec3f center;
this->computeBBox(action, box, center);
state->pop();
float xmin,ymin,zmin,xmax,ymax,zmax;
box.getBounds(xmin,ymin,zmin,xmax,ymax,zmax);
SbVec3f v0(xmin,ymax,zmax);
SbVec3f v1(xmax,ymax,zmax);
SbVec3f v2(xmax,ymin,zmax);
SbVec3f v3(xmin,ymin,zmax);
vv.projectToScreen(v0,v0);
vv.projectToScreen(v1,v1);
vv.projectToScreen(v2,v2);
vv.projectToScreen(v3,v3);
float width,height;
width = (v1[0]-v0[0])*vpsize[0];
height = (v1[1]-v3[1])*vpsize[1];
switch (this->justification.getValue()) {
case SoText2::RIGHT:
nilpoint[0] -= width;
break;
case SoText2::CENTER:
nilpoint[0] -= 0.5f*width;
break;
default:
break;
}
if (lines > 1) {
nilpoint[1] -= (float(lines-1)/(float)lines*height);
}
SbVec3f toppoint = nilpoint;
toppoint[0] += width;
toppoint[1] += height;
// Set new state.
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0, vpsize[0], 0, vpsize[1], -1.0f, 1.0f);
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
state->push();
// disable textures for all units
SoGLTextureEnabledElement::set(state, this, false);
SoMultiTextureEnabledElement::set(state, this, false);
glPushAttrib(GL_ENABLE_BIT | GL_PIXEL_MODE_BIT | GL_COLOR_BUFFER_BIT);
glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
// color and frame size
SbColor color = this->backgroundColor.getValue();
float fs = this->frameSize.getValue();
// draw background
glColor3f(color[0], color[1], color[2]);
glBegin(GL_QUADS);
glVertex3f(nilpoint[0]-fs,nilpoint[1]-fs,0.0f);
glVertex3f(toppoint[0]+fs,nilpoint[1]-fs,0.0f);
glVertex3f(toppoint[0]+fs,toppoint[1]+fs,0.0f);
glVertex3f(nilpoint[0]-fs,toppoint[1]+fs,0.0f);
glEnd();
// pop old state
glPopClientAttrib();
glPopAttrib();
state->pop();
glPixelStorei(GL_UNPACK_ALIGNMENT,4);
// Pop old GL matrix state.
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}
state->pop();
inherited::GLRender(action);
}
// ------------------------------------------------------
SO_NODE_SOURCE(SoColorBarLabel)
void SoColorBarLabel::initClass()
{
SO_NODE_INIT_CLASS(SoColorBarLabel, SoText2, "Text2");
}
SoColorBarLabel::SoColorBarLabel()
{
SO_NODE_CONSTRUCTOR(SoColorBarLabel);
}
void SoColorBarLabel::computeBBox(SoAction * action, SbBox3f & box, SbVec3f & center)
{
inherited::computeBBox(action, box, center);
if (!box.hasVolume()) {
SbViewVolume vv = SoViewVolumeElement::get(action->getState());
// workaround for https://github.com/coin3d/coin/issues/417:
// extend by 2 percent
vv.scaleWidth(1.02f);
SoViewVolumeElement::set(action->getState(), this, vv);
inherited::computeBBox(action, box, center);
}
}
// ------------------------------------------------------
SO_NODE_SOURCE(SoStringLabel)
void SoStringLabel::initClass()
{
SO_NODE_INIT_CLASS(SoStringLabel, SoNode, "Node");
}
SoStringLabel::SoStringLabel()
{
SO_NODE_CONSTRUCTOR(SoStringLabel);
SO_NODE_ADD_FIELD(string, (""));
SO_NODE_ADD_FIELD(textColor, (SbVec3f(1.0f,1.0f,1.0f)));
SO_NODE_ADD_FIELD(name, ("Helvetica"));
SO_NODE_ADD_FIELD(size, (12));
}
/**
* Renders the open edges only.
*/
void SoStringLabel::GLRender(SoGLRenderAction *action)
{
QOpenGLWidget* window;
SoState * state = action->getState();
state->push();
SoLazyElement::setLightModel(state, SoLazyElement::BASE_COLOR);
SoGLWidgetElement::get(state, window);
if (!window) {
state->pop();
return;
}
// Enter in 2D screen mode
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(-1,1,-1,1,-1,1);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glPushAttrib(GL_ENABLE_BIT);
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
QFont font;
font.setStyleStrategy(QFont::NoAntialias);
font.setFamily(QLatin1String(this->name.getValue()));
font.setPixelSize(this->size.getValue());
glBlendFunc(GL_ONE,GL_SRC_ALPHA);
// text color
SbColor color = this->textColor.getValue();
glColor4f(color[0], color[1], color[2], 1);
const SbMatrix & mat = SoModelMatrixElement::get(state);
const SbMatrix & projmatrix = (mat * SoViewingMatrixElement::get(state) *
SoProjectionMatrixElement::get(state));
SbVec3f nil(0.0f, 0.0f, 0.0f);
projmatrix.multVecMatrix(nil, nil);
QStringList list;
for (int i=0; i<this->string.getNum(); i++)
list << QLatin1String(this->string[i].getString());
// Leave 2D screen mode
glPopAttrib();
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
state->pop();
}
// ------------------------------------------------------
SO_NODE_SOURCE(SoFrameLabel)
void SoFrameLabel::initClass()
{
SO_NODE_INIT_CLASS(SoFrameLabel, SoImage, "Image");
}
SoFrameLabel::SoFrameLabel()
{
SO_NODE_CONSTRUCTOR(SoFrameLabel);
SO_NODE_ADD_FIELD(string, (""));
SO_NODE_ADD_FIELD(textColor, (SbVec3f(1.0f,1.0f,1.0f)));
SO_NODE_ADD_FIELD(backgroundColor, (SbVec3f(0.0f,0.333f,1.0f)));
SO_NODE_ADD_FIELD(justification, (LEFT));
SO_NODE_ADD_FIELD(name, ("Helvetica"));
SO_NODE_ADD_FIELD(size, (12));
SO_NODE_ADD_FIELD(frame, (true));
SO_NODE_ADD_FIELD(border, (true));
SO_NODE_ADD_FIELD(backgroundUseBaseColor, (false));
SO_NODE_ADD_FIELD(textUseBaseColor, (false));
//SO_NODE_ADD_FIELD(image, (SbVec2s(0,0), 0, NULL));
}
void SoFrameLabel::setIcon(const QPixmap &pixMap)
{
iconPixmap = pixMap;
drawImage();
}
void SoFrameLabel::notify(SoNotList * list)
{
SoField *f = list->getLastField();
if (f == &this->string ||
f == &this->textColor ||
f == &this->backgroundColor ||
f == &this->justification ||
f == &this->name ||
f == &this->size ||
f == &this->frame ||
f == &this->border) {
drawImage();
}
inherited::notify(list);
}
void SoFrameLabel::drawImage()
{
const SbString* s = string.getValues(0);
int num = string.getNum();
if (num == 0) {
this->image = SoSFImage();
return;
}
QFont font(QString::fromLatin1(QByteArray(name.getValue())), size.getValue());
QFontMetrics fm(font);
int w = 0;
int h = fm.height() * num;
const SbColor& b = backgroundColor.getValue();
QColor backgroundBrush;
backgroundBrush.setRgbF(b[0],b[1],b[2]);
const SbColor& t = textColor.getValue();
QColor front;
front.setRgbF(t[0],t[1],t[2]);
const QPen borderPen(QColor(0,0,127), 2, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin);
QStringList lines;
for (int i=0; i<num; i++) {
QString line = QString::fromUtf8(s[i].getString());
w = std::max<int>(w, QtTools::horizontalAdvance(fm, line));
lines << line;
}
int padding = 5;
bool drawIcon = false;
QImage iconImg;
int widthIcon = 0;
int heightIcon = 0;
if (!iconPixmap.isNull()) {
drawIcon = true;
iconImg = iconPixmap.toImage();
widthIcon = iconImg.width() + 2*padding;
heightIcon = iconImg.height() + 2*padding;
}
int widthText = w + 2*padding;
int heightText = h + 2*padding;
int widthTotal = widthText + widthIcon;
int heightTotal = heightText > heightIcon ? heightText : heightIcon;
int paddingTextV = (heightTotal - h) / 2;
int paddingIconV = (heightTotal - iconImg.height()) / 2;
QImage image(widthTotal, heightTotal, QImage::Format_ARGB32_Premultiplied);
image.fill(0x00000000);
QPainter painter(&image);
painter.setRenderHint(QPainter::Antialiasing);
SbBool drawFrame = frame.getValue();
SbBool drawBorder = border.getValue();
if (drawFrame || drawBorder) {
painter.setPen(drawBorder ? borderPen : QPen(Qt::transparent));
painter.setBrush(QBrush(drawFrame ? backgroundBrush : Qt::transparent));
QRectF rectangle(0.0, 0.0, widthTotal, heightTotal);
painter.drawRoundedRect(rectangle, 5, 5);
}
if (drawIcon) {
painter.drawImage(QPoint(padding, paddingIconV), iconImg);
}
painter.setPen(front);
Qt::Alignment align = Qt::AlignVCenter;
if (justification.getValue() == 0)
align = Qt::AlignVCenter | Qt::AlignLeft;
else if (justification.getValue() == 1)
align = Qt::AlignVCenter | Qt::AlignRight;
else
align = Qt::AlignVCenter | Qt::AlignHCenter;
QString text = lines.join(QLatin1String("\n"));
painter.setFont(font);
painter.drawText(widthIcon + padding, paddingTextV, w, h, align, text);
painter.end();
SoSFImage sfimage;
Gui::BitmapFactory().convert(image, sfimage);
this->image = sfimage;
}
/**
* Renders the open edges only.
*/
void SoFrameLabel::GLRender(SoGLRenderAction *action)
{
if (backgroundUseBaseColor.getValue()) {
SoState* state = action->getState();
const SbColor& diffuse = SoLazyElement::getDiffuse(state, 0);
if (diffuse != this->backgroundColor.getValue()) {
this->backgroundColor.setValue(diffuse);
}
}
if (textUseBaseColor.getValue()) {
SoState* state = action->getState();
const SbColor& diffuse = SoLazyElement::getDiffuse(state, 0);
if (diffuse != this->textColor.getValue()) {
this->textColor.setValue(diffuse);
}
}
inherited::GLRender(action);
}
// ------------------------------------------------------
SO_NODE_SOURCE(TranslateManip)
void
TranslateManip::initClass()
{
SO_NODE_INIT_CLASS(TranslateManip, SoTransformManip,
"TransformManip");
}
TranslateManip::TranslateManip()
{
SO_NODE_CONSTRUCTOR(TranslateManip);
auto myDrag = new SoTranslate2Dragger;
setDragger(myDrag);
}
TranslateManip::~TranslateManip() = default;
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