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81f50a577c2156dfd6e41fee8f3dacd9b439c826
create/src/Gui/SoTextLabel.cpp
wmayer 9e42badfaf move QuarterWidget to QOpenGLWidget
2017-03-21 20:37:03 +01:00

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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 "PreCompiled.h"
#ifndef _PreComp_
# ifdef FC_OS_WIN32
# include <windows.h>
# endif
# ifdef FC_OS_MACOSX
# include <OpenGL/gl.h>
# else
# include <GL/gl.h>
# endif
# include <cfloat>
# include <algorithm>
# include <QFontMetrics>
# include <QPainter>
# include <QPen>
# include <Inventor/actions/SoGLRenderAction.h>
# include <Inventor/bundles/SoMaterialBundle.h>
# include <Inventor/elements/SoLazyElement.h>
# include <Inventor/nodes/SoSurroundScale.h>
# include <Inventor/misc/SoState.h>
#endif
#include <Inventor/C/basic.h>
#include <Inventor/draggers/SoTranslate2Dragger.h>
#include <Inventor/elements/SoFontNameElement.h>
#include <Inventor/elements/SoFontSizeElement.h>
#include <Inventor/elements/SoCullElement.h>
#include <Inventor/elements/SoModelMatrixElement.h>
#include <Inventor/elements/SoProjectionMatrixElement.h>
#include <Inventor/elements/SoViewingMatrixElement.h>
#include <Inventor/elements/SoViewVolumeElement.h>
#include <Inventor/elements/SoViewportRegionElement.h>
#include <Inventor/elements/SoGLTextureEnabledElement.h>
#if COIN_MAJOR_VERSION > 3
#include <Inventor/elements/SoMultiTextureEnabledElement.h>
#else
#include <Inventor/elements/SoGLTexture3EnabledElement.h>
#endif
#include <QtOpenGL.h>
#include "SoTextLabel.h"
#include "SoFCInteractiveElement.h"
#include "BitmapFactory.h"
using namespace Gui;
/*!
\code
s="""
#Inventor V2.1 ascii
Annotation {
Translation { translation 4 0 0 }
FontStyle {
size 20
style BOLD
}
BaseColor {
rgb 0.0 0.0 0.0
}
SoTextLabel { string ["Text label", "Second line"] backgroundColor 1.0 0.447059 0.337255}
}
"""
App.ActiveDocument.addObject("App::InventorObject","iv").Buffer=s
\endcode
*/
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 SbViewVolume & vv = SoViewVolumeElement::get(state);
const SbMatrix & projmatrix = (mat * SoViewingMatrixElement::get(state) *
SoProjectionMatrixElement::get(state));
const SbViewportRegion & vp = SoViewportRegionElement::get(state);
SbVec2s vpsize = vp.getViewportSizePixels();
// font stuff
//float space = this->spacing.getValue();
//float fontsize = SoFontSizeElement::get(state);
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];
#if 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);
}
#else
// Unfortunately, the required size (in pixels) is stored in a non-accessible way
// in the subclass SoText2. Thus, we try to get a satisfactory solution with Qt
// methods.
// The font name is of the form "family:style". If 'style' is given it can be
// 'Bold', 'Italic' or 'Bold Italic'.
QFont font;
QString fn = QString::fromLatin1(fontname.getString());
int pos = fn.indexOf(QLatin1Char(':'));
if (pos > -1) {
if (fn.indexOf(QLatin1String("Bold"),pos,Qt::CaseInsensitive) > pos)
font.setBold(true);
if (fn.indexOf(QLatin1String("Italic"),pos,Qt::CaseInsensitive) > pos)
font.setItalic(true);
fn = fn.left(pos);
}
font.setFamily(fn);
font.setPixelSize((int)fontsize);
QFontMetrics fm(font);
float width = 0.0f;
float height = 0.75f*fontsize*lines + (lines-1)*space;//fm.height();
float hh=0;
for (int i = 0; i < lines; i++) {
SbString str = this->string[i];
float w = fm.width(QLatin1String(this->string[i].getString()));
width = std::max<float>(width, w);
hh = fm.height();
}
if (lines > 1) {
nilpoint[1] -= ((lines-1)*fontsize*0.75f+space);
}
#endif
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);
#if COIN_MAJOR_VERSION > 3
SoMultiTextureEnabledElement::set(state, this, false);
#else
SoGLTexture3EnabledElement::set(state, this, false);
#endif
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(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)
{
QtGLWidget* 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);
/* Background Box */
//glColor4f(1,0.1f,0.1f,1);
//int ln =4;
//float ls = font.pixelSize()*1.5f;
//float bh = -1 + 2.0*(ls*(ln+.25))/float(window->height());
//glBegin(GL_QUADS);
//glVertex2f(-1.f,bh); glVertex2f(-1.f,-1.f);
//glVertex2f( 1.f,-1.f); glVertex2f( 1.f,bh);
//glEnd();
//float middleCol=window->width()*0.40;
//float rightCol=window->width()*0.85;
//float startPos = window->height()-(5+ls*(ln));
// text color
SbColor color = this->textColor.getValue();
glColor4f(color[0], color[1], color[2],1);
//window->renderText(20,20/*startPos+ 1*ls*/,QLatin1String(this->string[0].getString()),font);
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());
#if !defined(HAVE_QT5_OPENGL)
window->renderText(nil[0],nil[1],nil[2],list.join(QLatin1String("\n")),font);
#else
//FIXME: HAVE_QT5_OPENGL
#endif
// 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(image, (SbVec2s(0,0), 0, NULL));
}
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) {
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(name.getValue()), size.getValue());
QFontMetrics fm(font);
int w = 0;
int h = fm.height() * num;
const SbColor& b = backgroundColor.getValue();
QColor brush;
brush.setRgbF(b[0],b[1],b[2]);
const SbColor& t = textColor.getValue();
QColor front;
front.setRgbF(t[0],t[1],t[2]);
QStringList lines;
for (int i=0; i<num; i++) {
QString line = QString::fromUtf8(s[i].getString());
w = std::max<int>(w, fm.width(line));
lines << line;
}
QImage image(w+10,h+10,QImage::Format_ARGB32_Premultiplied);
image.fill(0x00000000);
QPainter painter(&image);
painter.setRenderHint(QPainter::Antialiasing);
SbBool drawFrame = frame.getValue();
if (drawFrame) {
painter.setPen(QPen(QColor(0,0,127), 2, Qt::SolidLine, Qt::RoundCap,
Qt::RoundJoin));
painter.setBrush(QBrush(brush, Qt::SolidPattern));
QRectF rectangle(0.0, 0.0, w+10, h+10);
painter.drawRoundedRect(rectangle, 5, 5);
}
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(5,5,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)
{
inherited::GLRender(action);
#if 0
QtGLWidget* 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);
/* Background Box */
//glColor4f(1,0.1f,0.1f,1);
//int ln =4;
//float ls = font.pixelSize()*1.5f;
//float bh = -1 + 2.0*(ls*(ln+.25))/float(window->height());
//glBegin(GL_QUADS);
//glVertex2f(-1.f,bh); glVertex2f(-1.f,-1.f);
//glVertex2f( 1.f,-1.f); glVertex2f( 1.f,bh);
//glEnd();
//float middleCol=window->width()*0.40;
//float rightCol=window->width()*0.85;
//float startPos = window->height()-(5+ls*(ln));
// text color
SbColor color = this->textColor.getValue();
glColor4f(color[0], color[1], color[2],1);
//window->renderText(20,20/*startPos+ 1*ls*/,QLatin1String(this->string[0].getString()),font);
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());
window->renderText(nil[0],nil[1],nil[2],list.join(QLatin1String("\n")),font);
// Leave 2D screen mode
glPopAttrib();
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
state->pop();
#endif
}
// ------------------------------------------------------
SO_NODE_SOURCE(TranslateManip);
void
TranslateManip::initClass()
{
SO_NODE_INIT_CLASS(TranslateManip, SoTransformManip,
"TransformManip");
}
TranslateManip::TranslateManip()
{
SO_NODE_CONSTRUCTOR(TranslateManip);
SoTranslate2Dragger *myDrag = new SoTranslate2Dragger;
setDragger(myDrag);
}
TranslateManip::~TranslateManip()
{
}
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