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ThirdParty-6/ParaView-5.0.1/VTK/Charts/Core/vtkChart.cxx

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C++

/*=========================================================================
Program: Visualization Toolkit
Module: vtkChart.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.
=========================================================================*/
#include "vtkChart.h"
#include "vtkAxis.h"
#include "vtkBrush.h"
#include "vtkTransform2D.h"
#include "vtkContextMouseEvent.h"
#include "vtkAnnotationLink.h"
#include "vtkContextScene.h"
#include "vtkTextProperty.h"
#include "vtkObjectFactory.h"
//-----------------------------------------------------------------------------
vtkChart::MouseActions::MouseActions()
{
this->Pan() = vtkContextMouseEvent::LEFT_BUTTON;
this->Zoom() = vtkContextMouseEvent::MIDDLE_BUTTON;
this->Select() = vtkContextMouseEvent::RIGHT_BUTTON;
this->ZoomAxis() = -1;
this->SelectPolygon() = -1;
}
//-----------------------------------------------------------------------------
vtkChart::MouseClickActions::MouseClickActions()
{
this->Data[0] = vtkContextMouseEvent::LEFT_BUTTON;
this->Data[1] = vtkContextMouseEvent::RIGHT_BUTTON;
}
//-----------------------------------------------------------------------------
vtkCxxSetObjectMacro(vtkChart, AnnotationLink, vtkAnnotationLink);
//-----------------------------------------------------------------------------
vtkChart::vtkChart()
{
this->Geometry[0] = 0;
this->Geometry[1] = 0;
this->Point1[0] = 0;
this->Point1[1] = 0;
this->Point2[0] = 0;
this->Point2[1] = 0;
this->Size.Set(0, 0, 0, 0);
this->ShowLegend = false;
this->TitleProperties = vtkTextProperty::New();
this->TitleProperties->SetJustificationToCentered();
this->TitleProperties->SetColor(0.0, 0.0, 0.0);
this->TitleProperties->SetFontSize(12);
this->TitleProperties->SetFontFamilyToArial();
this->AnnotationLink = NULL;
this->LayoutStrategy = vtkChart::FILL_SCENE;
this->RenderEmpty = false;
this->BackgroundBrush = vtkSmartPointer<vtkBrush>::New();
this->BackgroundBrush->SetColorF(1, 1, 1, 0);
this->SelectionMode = vtkContextScene::SELECTION_NONE;
this->SelectionMethod = vtkChart::SELECTION_ROWS;
}
//-----------------------------------------------------------------------------
vtkChart::~vtkChart()
{
for(int i=0; i < 4; i++)
{
if(this->GetAxis(i))
{
this->GetAxis(i)->RemoveObservers(vtkChart::UpdateRange);
}
}
this->TitleProperties->Delete();
if (this->AnnotationLink)
{
this->AnnotationLink->Delete();
}
}
//-----------------------------------------------------------------------------
vtkPlot * vtkChart::AddPlot(int)
{
return NULL;
}
//-----------------------------------------------------------------------------
vtkIdType vtkChart::AddPlot(vtkPlot*)
{
return -1;
}
//-----------------------------------------------------------------------------
bool vtkChart::RemovePlot(vtkIdType)
{
return false;
}
//-----------------------------------------------------------------------------
bool vtkChart::RemovePlotInstance(vtkPlot* plot)
{
if (plot)
{
vtkIdType numberOfPlots = this->GetNumberOfPlots();
for (vtkIdType i = 0; i < numberOfPlots; ++i)
{
if (this->GetPlot(i) == plot)
{
return this->RemovePlot(i);
}
}
}
return false;
}
//-----------------------------------------------------------------------------
void vtkChart::ClearPlots()
{
}
//-----------------------------------------------------------------------------
vtkPlot* vtkChart::GetPlot(vtkIdType)
{
return NULL;
}
//-----------------------------------------------------------------------------
vtkIdType vtkChart::GetNumberOfPlots()
{
return 0;
}
//-----------------------------------------------------------------------------
vtkAxis* vtkChart::GetAxis(int)
{
return NULL;
}
//-----------------------------------------------------------------------------
vtkIdType vtkChart::GetNumberOfAxes()
{
return 0;
}
//-----------------------------------------------------------------------------
void vtkChart::RecalculateBounds()
{
return;
}
//-----------------------------------------------------------------------------
void vtkChart::SetSelectionMethod(int method)
{
if (method == this->SelectionMethod)
{
return;
}
this->SelectionMethod = method;
this->Modified();
}
//-----------------------------------------------------------------------------
int vtkChart::GetSelectionMethod()
{
return this->SelectionMethod;
}
//-----------------------------------------------------------------------------
void vtkChart::SetShowLegend(bool visible)
{
if (this->ShowLegend != visible)
{
this->ShowLegend = visible;
this->Modified();
}
}
//-----------------------------------------------------------------------------
bool vtkChart::GetShowLegend()
{
return this->ShowLegend;
}
vtkChartLegend * vtkChart::GetLegend()
{
return 0;
}
//-----------------------------------------------------------------------------
void vtkChart::SetTitle(const vtkStdString &title)
{
if (this->Title != title)
{
this->Title = title;
this->Modified();
}
}
//-----------------------------------------------------------------------------
vtkStdString vtkChart::GetTitle()
{
return this->Title;
}
//-----------------------------------------------------------------------------
bool vtkChart::CalculatePlotTransform(vtkAxis *x, vtkAxis *y,
vtkTransform2D *transform)
{
if (!x || !y || !transform)
{
vtkWarningMacro("Called with null arguments.");
return false;
}
vtkVector2d origin(x->GetMinimum(), y->GetMinimum());
vtkVector2d scale(x->GetMaximum() - x->GetMinimum(),
y->GetMaximum() - y->GetMinimum());
vtkVector2d shift(0.0, 0.0);
vtkVector2d factor(1.0, 1.0);
for (int i = 0; i < 2; ++i)
{
if (fabs(log10(origin[i] / scale[i])) > 2)
{
shift[i] = floor(log10(origin[i] / scale[i]) / 3.0) * 3.0;
shift[i] = -origin[i];
}
if (fabs(log10(scale[i])) > 10)
{
// We need to scale the transform to show all data, do this in blocks.
factor[i] = pow(10.0, floor(log10(scale[i]) / 10.0) * -10.0);
scale[i] = scale[i] * factor[i];
}
}
x->SetScalingFactor(factor[0]);
x->SetShift(shift[0]);
y->SetScalingFactor(factor[1]);
y->SetShift(shift[1]);
// Get the scale for the plot area from the x and y axes
float *min = x->GetPoint1();
float *max = x->GetPoint2();
if (fabs(max[0] - min[0]) == 0.0)
{
return false;
}
float xScale = scale[0] / (max[0] - min[0]);
// Now the y axis
min = y->GetPoint1();
max = y->GetPoint2();
if (fabs(max[1] - min[1]) == 0.0)
{
return false;
}
float yScale = scale[1] / (max[1] - min[1]);
transform->Identity();
transform->Translate(this->Point1[0], this->Point1[1]);
// Get the scale for the plot area from the x and y axes
transform->Scale(1.0 / xScale, 1.0 / yScale);
transform->Translate(-(x->GetMinimum() + shift[0]) * factor[0],
-(y->GetMinimum() + shift[1]) * factor[1]);
return true;
}
//-----------------------------------------------------------------------------
bool vtkChart::CalculateUnscaledPlotTransform(vtkAxis *x, vtkAxis *y,
vtkTransform2D *transform)
{
if (!x || !y || !transform)
{
vtkWarningMacro("Called with null arguments.");
return false;
}
vtkVector2d scale(x->GetMaximum() - x->GetMinimum(),
y->GetMaximum() - y->GetMinimum());
// Get the scale for the plot area from the x and y axes
float *min = x->GetPoint1();
float *max = x->GetPoint2();
if (fabs(max[0] - min[0]) == 0.0)
{
return false;
}
double xScale = scale[0] / (max[0] - min[0]);
// Now the y axis
min = y->GetPoint1();
max = y->GetPoint2();
if (fabs(max[1] - min[1]) == 0.0)
{
return false;
}
double yScale = scale[1] / (max[1] - min[1]);
transform->Identity();
transform->Translate(this->Point1[0], this->Point1[1]);
// Get the scale for the plot area from the x and y axes
transform->Scale(1.0 / xScale, 1.0 / yScale);
transform->Translate(-x->GetMinimum(), -y->GetMinimum());
return true;
}
//-----------------------------------------------------------------------------
void vtkChart::SetBottomBorder(int border)
{
this->Point1[1] = border >= 0 ? border : 0;
this->Point1[1] += static_cast<int>(this->Size.GetY());
}
//-----------------------------------------------------------------------------
void vtkChart::SetTopBorder(int border)
{
this->Point2[1] = border >=0 ?
this->Geometry[1] - border :
this->Geometry[1];
this->Point2[1] += static_cast<int>(this->Size.GetY());
}
//-----------------------------------------------------------------------------
void vtkChart::SetLeftBorder(int border)
{
this->Point1[0] = border >= 0 ? border : 0;
this->Point1[0] += static_cast<int>(this->Size.GetX());
}
//-----------------------------------------------------------------------------
void vtkChart::SetRightBorder(int border)
{
this->Point2[0] = border >=0 ?
this->Geometry[0] - border :
this->Geometry[0];
this->Point2[0] += static_cast<int>(this->Size.GetX());
}
//-----------------------------------------------------------------------------
void vtkChart::SetBorders(int left, int bottom, int right, int top)
{
this->SetLeftBorder(left);
this->SetRightBorder(right);
this->SetTopBorder(top);
this->SetBottomBorder(bottom);
}
void vtkChart::SetSize(const vtkRectf &rect)
{
this->Size = rect;
this->Geometry[0] = static_cast<int>(rect.GetWidth());
this->Geometry[1] = static_cast<int>(rect.GetHeight());
}
vtkRectf vtkChart::GetSize()
{
return this->Size;
}
void vtkChart::SetActionToButton(int action, int button)
{
if (action < -1 || action >= MouseActions::MaxAction)
{
vtkErrorMacro("Error, invalid action value supplied: " << action)
return;
}
this->Actions[action] = button;
for (int i = 0; i < MouseActions::MaxAction; ++i)
{
if (this->Actions[i] == button && i != action)
{
this->Actions[i] = -1;
}
}
}
int vtkChart::GetActionToButton(int action)
{
return this->Actions[action];
}
void vtkChart::SetClickActionToButton(int action, int button)
{
if (action < vtkChart::SELECT || action > vtkChart::NOTIFY)
{
vtkErrorMacro("Error, invalid action value supplied: " << action)
return;
}
this->Actions[action - 2] = button;
}
int vtkChart::GetClickActionToButton(int action)
{
return this->Actions[action - 2];
}
//-----------------------------------------------------------------------------
void vtkChart::SetBackgroundBrush(vtkBrush *brush)
{
if(brush == NULL)
{
// set to transparent white if brush is null
this->BackgroundBrush->SetColorF(1, 1, 1, 0);
}
else
{
this->BackgroundBrush = brush;
}
this->Modified();
}
//-----------------------------------------------------------------------------
vtkBrush* vtkChart::GetBackgroundBrush()
{
return this->BackgroundBrush.GetPointer();
}
//-----------------------------------------------------------------------------
void vtkChart::PrintSelf(ostream &os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
// Print out the chart's geometry if it has been set
os << indent << "Point1: " << this->Point1[0] << "\t" << this->Point1[1]
<< endl;
os << indent << "Point2: " << this->Point2[0] << "\t" << this->Point2[1]
<< endl;
os << indent << "Width: " << this->Geometry[0] << endl
<< indent << "Height: " << this->Geometry[1] << endl;
os << indent << "SelectionMode: " << this->SelectionMode << endl;
}
//-----------------------------------------------------------------------------
void vtkChart::AttachAxisRangeListener(vtkAxis* axis)
{
axis->AddObserver(vtkChart::UpdateRange, this, &vtkChart::AxisRangeForwarderCallback);
}
//-----------------------------------------------------------------------------
void vtkChart::AxisRangeForwarderCallback(vtkObject*, unsigned long, void*)
{
double fullAxisRange[8];
for(int i=0; i < 4; i++)
{
this->GetAxis(i)->GetRange(&fullAxisRange[i*2]);
}
this->InvokeEvent(vtkChart::UpdateRange, fullAxisRange);
}
//-----------------------------------------------------------------------------
void vtkChart::SetSelectionMode(int selMode)
{
if (this->SelectionMode == selMode ||
selMode < vtkContextScene::SELECTION_NONE ||
selMode > vtkContextScene::SELECTION_TOGGLE)
{
return;
}
this->SelectionMode = selMode;
this->Modified();
}