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vtkQtTreeRingLabelMapper.cxx
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vtkQtTreeRingLabelMapper.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkQtTreeRingLabelMapper.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/*-------------------------------------------------------------------------
Copyright 2008 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#include "vtkQImageToImageSource.h"
#include "vtkCamera.h"
#include "vtkCoordinate.h"
#include "vtkDataSetAttributes.h"
#include "vtkDoubleArray.h"
#include "vtkExecutive.h"
#include "vtkImageData.h"
#include "vtkMath.h"
#include "vtkObjectFactory.h"
#include "vtkQtTreeRingLabelMapper.h"
#include "vtkPlaneSource.h"
#include "vtkPolyDataMapper2D.h"
#include "vtkProperty2D.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkStringArray.h"
#include "vtkTextProperty.h"
#include "vtkTexture.h"
#include "vtkTexturedActor2D.h"
#include "vtkTextureMapToPlane.h"
#include "vtkTree.h"
#include "vtkUnicodeStringArray.h"
#include "vtkUnicodeString.h"
#include <QApplication>
#include <QFont>
#include <QFontMetricsF>
#include <QImage>
#include <QPainter>
#include <QTextDocument>
#include <QTextStream>
// #include <QFile>
// #include <QIODevice>
#include "vtkSmartPointer.h"
#define VTK_CREATE(type, name) \
vtkSmartPointer<type> name = vtkSmartPointer<type>::New()
vtkStandardNewMacro(vtkQtTreeRingLabelMapper);
vtkCxxSetObjectMacro(vtkQtTreeRingLabelMapper,LabelTextProperty,vtkTextProperty);
vtkQtTreeRingLabelMapper::vtkQtTreeRingLabelMapper()
{
this->Input = NULL;
this->Renderer = NULL;
this->VCoord = vtkCoordinate::New();
this->LabeledComponent = (-1);
this->FieldDataArray = 0;
this->FieldDataName = NULL;
this->TextRotationArrayName = 0;
this->SetTextRotationArrayName("TextRotation");
this->SetSectorsArrayName("area");
this->LabelTextProperty = vtkTextProperty::New();
this->LabelTextProperty->SetFontSize(10);
this->LabelTextProperty->SetBold(1);
this->LabelTextProperty->SetItalic(1);
this->LabelTextProperty->SetShadow(1);
this->LabelTextProperty->SetFontFamilyToArial();
this->SetLabelFormat("%s");
this->WindowSize[0] = this->WindowSize[1] = 0;
this->PlaneSource = vtkPlaneSource::New();
this->TextureMapToPlane = vtkTextureMapToPlane::New();
this->polyDataMapper = vtkPolyDataMapper2D::New();
this->QtImageSource = vtkQImageToImageSource::New();
this->LabelTexture = vtkTexture::New();
this->QtImage = new QImage( 1, 1, QImage::Format_ARGB32_Premultiplied );
//FIXME: QImage is initialized to grey. This will fix that, although it is a bit of a hack...
QPainter painter( this->QtImage );
painter.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing );
painter.setCompositionMode( QPainter::CompositionMode_Clear );
painter.drawImage( 0, 0, *this->QtImage );
painter.setCompositionMode( QPainter::CompositionMode_SourceOver );
this->QtImageSource->SetQImage( this->QtImage );
this->LabelTexture->SetInputConnection(this->QtImageSource->GetOutputPort());
this->LabelTexture->PremultipliedAlphaOn();
this->TextureMapToPlane->SetSRange( 0., 1. );
this->TextureMapToPlane->SetTRange( 0., 1. );
this->TextureMapToPlane->SetInputConnection(this->PlaneSource->GetOutputPort());
this->TextureMapToPlane->AutomaticPlaneGenerationOn();
this->polyDataMapper->SetInputConnection(this->TextureMapToPlane->GetOutputPort());
}
vtkQtTreeRingLabelMapper::~vtkQtTreeRingLabelMapper()
{
this->SetRenderer(NULL);
this->SetLabelTextProperty(NULL);
this->SetFieldDataName(NULL);
this->SetTextRotationArrayName( 0 );
this->VCoord->Delete();
this->PlaneSource->Delete();
this->TextureMapToPlane->Delete();
this->polyDataMapper->Delete();
this->QtImageSource->Delete();
this->LabelTexture->Delete();
delete this->QtImage;
}
//----------------------------------------------------------------------------
void vtkQtTreeRingLabelMapper::RenderOverlay(vtkViewport *viewport,
vtkActor2D *actor)
{
vtkRenderer *ren = vtkRenderer::SafeDownCast(viewport);
if (ren)
{
this->LabelTexture->Render(ren);
}
this->polyDataMapper->RenderOverlay(viewport, actor);
}
//----------------------------------------------------------------------------
void vtkQtTreeRingLabelMapper::RenderOpaqueGeometry(vtkViewport *viewport,
vtkActor2D *actor)
{
if(!QApplication::instance())
{
vtkErrorMacro("This class requires a QApplication instance.");
return;
}
vtkTextProperty *tprop = this->LabelTextProperty;
if (!tprop)
{
vtkErrorMacro(<<"Need text property to render labels");
return;
}
int numComp = 0, activeComp = 0;
vtkAbstractArray *abstractData;
vtkDataArray *numericData, *sectorInfo;
vtkStringArray *stringData;
vtkUnicodeStringArray *uStringData;
vtkTree *input=this->GetInputTree();
if ( !input )
{
vtkErrorMacro(<<"Need input tree to render labels (2)");
return;
}
if( input->GetNumberOfVertices() == 0 )
{
return;
}
vtkDataSetAttributes *pd = input->GetVertexData();
sectorInfo = this->GetInputArrayToProcess(0, input);
if( !sectorInfo )
{
vtkErrorMacro(<< "Input Tree does not have sector information.");
return;
}
vtkRenderer* renderer = vtkRenderer::SafeDownCast( viewport );
if ( this->CurrentViewPort != viewport || this->GetMTime() > this->BuildTime ||
input->GetMTime() > this->BuildTime || tprop->GetMTime() > this->BuildTime ||
renderer->GetActiveCamera()->GetMTime() > this->BuildTime )
{
vtkDebugMacro(<<"Rebuilding labels");
int *size = renderer->GetSize();
this->WindowSize[0] = size[0];
this->WindowSize[1] = size[1];
// See if we have to recalculate fonts sizes
if (this->CurrentViewPort != viewport)
{
this->CurrentViewPort = viewport;
}
// figure out what to label, and if we can label it
abstractData = NULL;
numericData = NULL;
stringData = NULL;
uStringData = NULL;
switch (this->LabelMode)
{
case VTK_LABEL_SCALARS:
if ( pd->GetScalars() )
{
numericData = pd->GetScalars();
}
break;
case VTK_LABEL_VECTORS:
if ( pd->GetVectors() )
{
numericData = pd->GetVectors();
}
break;
case VTK_LABEL_NORMALS:
if ( pd->GetNormals() )
{
numericData = pd->GetNormals();
}
break;
case VTK_LABEL_TCOORDS:
if ( pd->GetTCoords() )
{
numericData = pd->GetTCoords();
}
break;
case VTK_LABEL_TENSORS:
if ( pd->GetTensors() )
{
numericData = pd->GetTensors();
}
break;
case VTK_LABEL_FIELD_DATA:
{
int arrayNum;
if (this->FieldDataName != NULL)
{
abstractData = pd->GetAbstractArray(this->FieldDataName, arrayNum);
}
else
{
arrayNum = (this->FieldDataArray < pd->GetNumberOfArrays() ?
this->FieldDataArray : pd->GetNumberOfArrays() - 1);
abstractData = pd->GetAbstractArray(arrayNum);
}
numericData = vtkArrayDownCast<vtkDataArray>(abstractData);
stringData = vtkArrayDownCast<vtkStringArray>(abstractData);
uStringData = vtkArrayDownCast<vtkUnicodeStringArray>(abstractData);
};
break;
}
// determine number of components and check input
if( numericData )
{
numComp = numericData->GetNumberOfComponents();
activeComp = 0;
if ( this->LabeledComponent >= 0 )
{
activeComp = (this->LabeledComponent < numComp ?
this->LabeledComponent : numComp - 1);
numComp = 1;
}
}
else if( !stringData && !uStringData )
{
vtkErrorMacro(<<"Need input data to render labels (3)");
return;
}
this->LabelTree(input, sectorInfo, numericData, stringData, uStringData,
activeComp, numComp, viewport );
}
VTK_CREATE( vtkQImageToImageSource, qis );
qis->SetQImage( this->QtImage );
this->LabelTexture->SetInputConnection( qis->GetOutputPort() );
this->LabelTexture->PremultipliedAlphaOn();
this->PlaneSource->SetOrigin( 0, 0, 0 );
this->PlaneSource->SetPoint1( this->WindowSize[0], 0, 0 );
this->PlaneSource->SetPoint2( 0, this->WindowSize[1], 0 );
this->polyDataMapper->RenderOpaqueGeometry( viewport, actor );
}
void vtkQtTreeRingLabelMapper::LabelTree(
vtkTree *tree, vtkDataArray *sectorInfo, vtkDataArray *numericData, vtkStringArray *stringData, vtkUnicodeStringArray *uStringData,
int activeComp, int numComps, vtkViewport* viewport )
{
delete this->QtImage;
this->QtImage = new QImage( this->WindowSize[0], this->WindowSize[1], QImage::Format_ARGB32 );
char string[1024];
vtkIdType i, root = tree->GetRoot();
if (root < 0)
{
vtkErrorMacro(<< "Input Tree does not have a root.");
return;
}
vtkDataArray *TextRotationArray = tree->GetVertexData()->GetArray(this->TextRotationArrayName);
//FIXME - The image surface appears to be initialized to grey. This clears it, but seems like there should be a more appropriate way to do this...
QPainter painter( this->QtImage );
painter.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing );
painter.setCompositionMode( QPainter::CompositionMode_Clear );
painter.drawImage( 0, 0, *this->QtImage );
painter.setCompositionMode( QPainter::CompositionMode_SourceOver );
//end FIXME
//set text properties from LabelTextProperty
QFont fontSpec( this->LabelTextProperty->GetFontFamilyAsString() );
fontSpec.setStyleStrategy( QFont::PreferAntialias );
fontSpec.setBold( this->LabelTextProperty->GetBold() );
fontSpec.setItalic( this->LabelTextProperty->GetItalic() );
fontSpec.setPointSize( this->LabelTextProperty->GetFontSize() );
double* fc = this->LabelTextProperty->GetColor();
double slimits[4], sdimDC[2], textPosDC[2];
for( i = 0; i < tree->GetNumberOfVertices(); i++ )
{
sectorInfo->GetTuple(i, slimits);
//check to see if the point is in the window
if( !this->PointInWindow(slimits, sdimDC, textPosDC, viewport) )
{
continue;
}
//check to see if the text will fit in the sector
this->GetVertexLabel(i, numericData, stringData, uStringData, activeComp, numComps, string);
QString ResultString(string);
double x[3];
x[0] = textPosDC[0];
x[1] = textPosDC[1];
//Now, create the layout for the actual label...
QString textString, testString;
//Qt's coordinate system starts at the top left corner of the layout...
// vtk has been using the text baseline as the starting point, so
// we need to add a correction factor to account for the difference
QFontMetricsF fontMetric( fontSpec );
double baseline = fontMetric.ascent();
//set ellipsis bounds for this piece of text
//Note, don't use ellipsis unless at least 5 characters (w's) can be displayed...
QString minString( "wwwww" );
double allowedTextWidth = 0;
if( sdimDC[0] > sdimDC[1] )
{
if( sdimDC[0] < fontMetric.width(minString) )
{
continue;
}
allowedTextWidth = static_cast<int>(sdimDC[0]);
}
else
{
if( sdimDC[1] < fontMetric.width(minString) )
{
continue;
}
allowedTextWidth = static_cast<int>(sdimDC[1]);
}
//FIXME - This next step assumes no markup to the original text, which is probably a bad
// choice, but is necessary due to Qt's current methods for handling and computing
// rich text widths and ellipsis...
// QTextStream(&testString) << fontMetric.elidedText( QString::fromUtf8( ResultString.c_str() ), Qt::ElideRight, allowedTextWidth );
QTextStream(&testString) << fontMetric.elidedText( ResultString, Qt::ElideRight, allowedTextWidth );
QTextStream(&textString) << "<span>" << testString << "</span>";
//end FIXME
//check to see if the text will fit in the sector;
// if not, don't draw the label...
if( sdimDC[0] > sdimDC[1] )
{
if( sdimDC[1] < fontMetric.height() )
continue;
}
else
{
if( sdimDC[0] < fontMetric.height() )
continue;
}
double delta_x = 0., delta_y = 0.;
switch( this->LabelTextProperty->GetJustification() )
{
case VTK_TEXT_LEFT:
break;
case VTK_TEXT_CENTERED:
//FIXME - The width is not correct for html encodings...
delta_x = -(fontMetric.width(testString))/ 2.;
break;
case VTK_TEXT_RIGHT:
//FIXME - The width is not correct for html encodings...
delta_x = -fontMetric.width(testString);
break;
}
switch (this->LabelTextProperty->GetVerticalJustification())
{
case VTK_TEXT_TOP:
break;
case VTK_TEXT_CENTERED:
delta_y = -(fontMetric.height())/2.;
// delta_y = -fontMetric.ascent()/2.;
break;
case VTK_TEXT_BOTTOM:
delta_y = -baseline;
break;
}
double h = this->WindowSize[1];
//specify the clockwise text rotation angle
double rotation = 0.;
if( TextRotationArray )
{
TextRotationArray->GetTuple(i, &rotation);
rotation *= -1.;
}
if( this->LabelTextProperty->GetShadow() )
{
painter.save();
int shOff[2];
this->LabelTextProperty->GetShadowOffset( shOff );
painter.translate( x[0], h-x[1] );
// Make sure the shadow offset is an even number of pixels in x and y.
// This allows the shadow text to render the same way as the main text.
QTransform t;
t.rotate(rotation);
t.translate(shOff[0], -shOff[1]);
QPointF pt = t.map(QPoint(0, 0));
painter.translate(static_cast<int>(pt.x()+0.5), static_cast<int>(pt.y()+0.5));
painter.rotate( rotation );
painter.translate( delta_x, delta_y );
double shadowColor[3];
this->LabelTextProperty->GetShadowColor( shadowColor );
QTextDocument( textDocument );
textDocument.setDocumentMargin(0);
textDocument.setDefaultFont( fontSpec );
QString shadowStyleSheet;
QTextStream(&shadowStyleSheet) << "* { color: rgb( " << shadowColor[0]*255 << ", " << shadowColor[1]*255 << ", " << shadowColor[2]*255 << " ) }";
textDocument.setDefaultStyleSheet( shadowStyleSheet );
textDocument.setHtml( textString );
textDocument.drawContents( &painter );
painter.restore();
}
painter.save();
painter.translate( x[0], h-x[1] );
painter.rotate( rotation );
painter.translate( delta_x, delta_y );
QTextDocument( textDocument );
textDocument.setDocumentMargin(0);
textDocument.setDefaultFont( fontSpec );
QString styleSheet;
QTextStream(&styleSheet) << "* { color: rgb( " << fc[0]*255 << ", " << fc[1]*255 << ", " << fc[2]*255 << " ) }";
textDocument.setDefaultStyleSheet( styleSheet );
textDocument.setHtml( textString );
textDocument.drawContents( &painter );
painter.restore();
}
// QFile file( "C:/src/qtfonts.png" );
// file.open( QIODevice::WriteOnly);
// this->QtImage->save(&file, "PNG");
// file.close();
this->BuildTime.Modified();
}
bool vtkQtTreeRingLabelMapper::PointInWindow(double *sinfo, double *newDim,
double *textPosDC, vtkViewport *viewport)
{
double r = (0.5*(sinfo[3] - sinfo[2])) + sinfo[2];
double theta = sinfo[0] + (0.5*(sinfo[1]-sinfo[0]));
double x = r * cos( vtkMath::RadiansFromDegrees( theta ) );
double y = r * sin( vtkMath::RadiansFromDegrees( theta ) );
this->VCoord->SetViewport(viewport);
this->VCoord->SetValue(x, y, 0.);
int *dc = VCoord->GetComputedDisplayValue(0);
textPosDC[0] = dc[0];
textPosDC[1] = dc[1];
// Get the window extents
vtkWindow* win = viewport->GetVTKWindow();
int *winSize = win->GetSize();
bool return_value = true;
if( dc[0] < 0 || dc[0] > winSize[0] )
return_value = false;
if( dc[1] < 0 || dc[1] > winSize[1] )
return_value = false;
double xlc = sinfo[2] * cos( vtkMath::RadiansFromDegrees(sinfo[0]) );
double xuc = sinfo[3] * cos( vtkMath::RadiansFromDegrees(sinfo[0]) );
double ylc = sinfo[2] * sin( vtkMath::RadiansFromDegrees(sinfo[0]) );
double yuc = sinfo[3] * sin( vtkMath::RadiansFromDegrees(sinfo[0]) );
this->VCoord->SetValue(xlc, ylc, 0.);
int *dc1 = VCoord->GetComputedDisplayValue(0);
double dc1x = dc1[0];
double dc1y = dc1[1];
this->VCoord->SetValue(xuc, yuc, 0.);
int *dc2 = VCoord->GetComputedDisplayValue(0);
double dc2x = dc2[0];
double dc2y = dc2[1];
double height = sqrt( ((dc2x-dc1x)*(dc2x-dc1x)) + ((dc2y-dc1y)*(dc2y-dc1y)) );
double widthWC = r * vtkMath::RadiansFromDegrees( sinfo[1] - sinfo[0] );
double width = widthWC * height / sqrt( (xuc-xlc)*(xuc-xlc) + (yuc-ylc)*(yuc-ylc) );
newDim[0] = width;
newDim[1] = height;
// We are done with the coordinate, so release the viewport
this->VCoord->SetViewport(NULL);
return return_value;
}
//----------------------------------------------------------------------------
void vtkQtTreeRingLabelMapper::SetSectorsArrayName(const char* name)
{
this->SetInputArrayToProcess(0, 0, 0, vtkDataObject::FIELD_ASSOCIATION_VERTICES, name);
}
vtkTree *vtkQtTreeRingLabelMapper::GetInputTree()
{
return vtkTree::SafeDownCast(this->GetExecutive()->GetInputData(0, 0));
}
void vtkQtTreeRingLabelMapper::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "WindowSize: " << this->WindowSize[0] << "w x" << this->WindowSize[1] << "h\n";
if (this->LabelTextProperty)
{
os << indent << "Label Text Property:\n";
this->LabelTextProperty->PrintSelf(os,indent.GetNextIndent());
}
else
{
os << indent << "Label Text Property: (none)\n";
}
os << indent << "TextRotationArrayName: " << (this->TextRotationArrayName ? this->TextRotationArrayName : "(none)") << endl;
}
void vtkQtTreeRingLabelMapper::GetVertexLabel(
vtkIdType vertex, vtkDataArray *numericData, vtkStringArray *stringData, vtkUnicodeStringArray* uStringData,
int activeComp, int numComp, char *string)
{
char format[1024];
double val;
int j;
if ( numericData )
{
if ( numComp == 1 )
{
if (numericData->GetDataType() == VTK_CHAR)
{
if (strcmp(this->LabelFormat,"%c") != 0)
{
vtkErrorMacro(<<"Label format must be %c to use with char");
string[0] = '\0';
return;
}
sprintf(string, this->LabelFormat,
static_cast<char>(numericData->GetComponent(vertex, activeComp)));
}
else
{
sprintf(string, this->LabelFormat,
numericData->GetComponent(vertex, activeComp));
}
}
else
{
strcpy(format, "("); strcat(format, this->LabelFormat);
for (j=0; j<(numComp-1); j++)
{
sprintf(string, format, numericData->GetComponent(vertex, j));
strcpy(format,string); strcat(format,", ");
strcat(format, this->LabelFormat);
}
sprintf(string, format, numericData->GetComponent(vertex, numComp-1));
strcat(string, ")");
}
}
else if (stringData)// rendering string data
{
if (strcmp(this->LabelFormat,"%s") != 0)
{
vtkErrorMacro(<<"Label format must be %s to use with strings");
string[0] = '\0';
return;
}
sprintf(string, this->LabelFormat,
stringData->GetValue(vertex).c_str());
}
else if (uStringData)// rendering unicode string data
{
if (strcmp(this->LabelFormat,"%s") != 0)
{
vtkErrorMacro(<<"Label format must be %s to use with strings");
string[0] = '\0';
return;
}
sprintf(string, this->LabelFormat, uStringData->GetValue(vertex).utf8_str());
}
else // Use the vertex id
{
val = static_cast<double>(vertex);
sprintf(string, this->LabelFormat, val);
}
}
vtkMTimeType vtkQtTreeRingLabelMapper::GetMTime()
{
vtkMTimeType filterMTime = this->MTime.GetMTime();
if( this->Renderer )
{
vtkRenderWindow* rw = this->Renderer->GetRenderWindow();
if ( rw )
{
vtkMTimeType renWindMTime = rw->GetMTime();
if ( renWindMTime > filterMTime )
{
int* rwSize = rw->GetSize();
if ( rwSize[0] != this->WindowSize[0] || rwSize[1] != this->WindowSize[1] )
{
return renWindMTime;
}
}
}
}
return filterMTime;
}