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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkTkImageViewer2D.h"
#include <tk.h>
namespace itk
{
TkImageViewer2D::TkImageViewer2D()
{
m_Interpreter = 0;
// Setup the internal pipeline.
m_FlipFilter = FlipFilter::New();
FlipFilter::FlipAxesArrayType axes;
axes[0] = false;
axes[1] = true;
m_FlipFilter->SetFlipAxes(axes);
m_RescaleFilter = RescaleFilter::New();
m_RescaleFilter->SetInput(m_FlipFilter->GetOutput());
m_RescaleFilter->SetOutputMinimum(0);
m_RescaleFilter->SetOutputMaximum(255);
}
TkImageViewer2D::~TkImageViewer2D()
{
}
//----------------------------------------------------------------------------
void TkImageViewer2D::SetInterpreter(Tcl_Interp* interp)
{
m_Interpreter = interp;
}
//----------------------------------------------------------------------------
Tcl_Interp* TkImageViewer2D::GetInterpreter() const
{
return m_Interpreter;
}
//----------------------------------------------------------------------------
void TkImageViewer2D::SetImageName(const char* name)
{
m_ImageName = name;
}
//----------------------------------------------------------------------------
const char* TkImageViewer2D::GetImageName() const
{
return m_ImageName.c_str();
}
//----------------------------------------------------------------------------
void TkImageViewer2D::SetCanvasName(const char* name)
{
m_CanvasName = name;
}
//----------------------------------------------------------------------------
const char* TkImageViewer2D::GetCanvasName() const
{
return m_CanvasName.c_str();
}
//----------------------------------------------------------------------------
void TkImageViewer2D::SetInput(InputImageType* image)
{
this->Superclass::SetNthInput(0, image);
}
//----------------------------------------------------------------------------
TkImageViewer2D::InputImageType* TkImageViewer2D::GetInput()
{
DataObject* input = this->Superclass::GetInput(0);
return dynamic_cast<InputImageType*>(input);
}
//----------------------------------------------------------------------------
void TkImageViewer2D::Draw()
{
// Make sure we have an input image.
InputImageType* input = this->GetInput();
if(!input) { return; }
// Connect our input to the internal pipeline.
m_FlipFilter->SetInput(input);
// Bring the image up to date.
RescaleFilter::OutputImageType* image = m_RescaleFilter->GetOutput();
image->UpdateOutputInformation();
image->SetRequestedRegion(image->GetLargestPossibleRegion());
image->Update();
// Get the size of the image.
itk::Size<2> size = image->GetLargestPossibleRegion().GetSize();
int width = static_cast<int>(size[0]);
int height = static_cast<int>(size[1]);
// Setup the size
Tk_PhotoHandle photo =
Tk_FindPhoto(m_Interpreter, const_cast<char*>(m_ImageName.c_str()));
Tk_PhotoSetSize(photo, width, height);
std::ostringstream command;
command << m_CanvasName.c_str() << " configure -scrollregion \"1 1 "
<< width << " " << height << "\"";
std::string cmdstr = command.str();
char* cmd = new char[cmdstr.length()+1];
strcpy(cmd, cmdstr.c_str());
Tcl_GlobalEval(m_Interpreter, cmd);
delete[] cmd;
// Copy the image data to the Tk photo.
unsigned char* buffer =
reinterpret_cast<unsigned char*>(image->GetBufferPointer());
Tk_PhotoImageBlock block;
block.pixelPtr = buffer;
block.width = width;
block.height = height;
block.pitch = width;
block.pixelSize = 1;
block.offset[0] = 0;
block.offset[1] = 0;
block.offset[2] = 0;
block.offset[3] = 0;
#if (TK_MAJOR_VERSION == 8) && (TK_MINOR_VERSION < 4)
Tk_PhotoPutBlock(photo, &block, 0, 0, size[0], size[1]);
#else
Tk_PhotoPutBlock(photo, &block, 0, 0, size[0], size[1],
TK_PHOTO_COMPOSITE_SET);
#endif
}
} // namespace itk
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