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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkPDFContextDevice2D
* @brief vtkContextDevice2D implementation for use with vtkPDFExporter.
*
* Quirks:
* - Libharu does not support RGBA images. If an alpha channel is present in any
* drawn images, it will be blended into an opaque background filled with the
* active Brush color to produce a flat RGB image.
*/
#ifndef vtkPDFContextDevice2D_h
#define vtkPDFContextDevice2D_h
#include "vtkContextDevice2D.h"
#include "vtkIOExportPDFModule.h" // For export macro
#include "vtkNew.h" // For vtkNew!
VTK_ABI_NAMESPACE_BEGIN
class vtkColor3ub;
class vtkPath;
class vtkRenderer;
class vtkTransform;
class VTKIOEXPORTPDF_EXPORT vtkPDFContextDevice2D : public vtkContextDevice2D
{
public:
static vtkPDFContextDevice2D* New();
vtkTypeMacro(vtkPDFContextDevice2D, vtkContextDevice2D);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Set the HPDF_Doc and HPDF_Page to use while exporting the scene. The
* type is void* to keep the libharu opaque types from leaking into headers.
* This function expects HPDF_Document* and HPDF_Page* as the arguments.
*/
void SetHaruObjects(void* doc, void* page);
void SetRenderer(vtkRenderer*);
using vtkContextDevice2D::DrawMarkers;
using vtkContextDevice2D::DrawPoints;
using vtkContextDevice2D::DrawPointSprites;
void DrawPoly(float* points, int n, unsigned char* colors = nullptr, int nc_comps = 0) override;
void DrawLines(float* f, int n, unsigned char* colors = nullptr, int nc_comps = 0) override;
void DrawPoints(float* points, int n, unsigned char* colors = nullptr, int nc_comps = 0) override;
void DrawPointSprites(vtkImageData* sprite, float* points, int n, unsigned char* colors = nullptr,
int nc_comps = 0) override;
void DrawMarkers(int shape, bool highlight, float* points, int n, unsigned char* colors = nullptr,
int nc_comps = 0) override;
void DrawQuad(float*, int) override;
void DrawQuadStrip(float*, int) override;
void DrawPolygon(float*, int) override;
void DrawColoredPolygon(
float* points, int numPoints, unsigned char* colors = nullptr, int nc_comps = 0) override;
void DrawEllipseWedge(float x, float y, float outRx, float outRy, float inRx, float inRy,
float startAngle, float stopAngle) override;
void DrawEllipticArc(
float x, float y, float rX, float rY, float startAngle, float stopAngle) override;
void DrawString(float* point, const vtkStdString& string) override;
void ComputeStringBounds(const vtkStdString& string, float bounds[4]) override;
void ComputeJustifiedStringBounds(const char* string, float bounds[4]) override;
void DrawMathTextString(float* point, const vtkStdString& str) override;
void DrawImage(float p[2], float scale, vtkImageData* image) override;
void DrawImage(const vtkRectf& pos, vtkImageData* image) override;
void SetColor4(unsigned char color[4]) override;
void SetTexture(vtkImageData* image, int properties) override;
void SetPointSize(float size) override;
void SetLineWidth(float width) override;
void DrawPolyData(float p[2], float scale, vtkPolyData* polyData, vtkUnsignedCharArray* colors,
int scalarMode) override;
void SetLineType(int type) override;
void SetMatrix(vtkMatrix3x3* m) override;
void GetMatrix(vtkMatrix3x3* m) override;
void MultiplyMatrix(vtkMatrix3x3* m) override;
void PushMatrix() override;
void PopMatrix() override;
void SetClipping(int* x) override;
void EnableClipping(bool enable) override;
protected:
vtkPDFContextDevice2D();
~vtkPDFContextDevice2D() override;
void PushGraphicsState();
void PopGraphicsState();
void ApplyPenState();
void ApplyStrokeColor(unsigned char* color, int numComps);
void ApplyLineWidth(float width);
void ApplyLineType(int type);
void Stroke();
void ApplyPenStateAsFill();
void ApplyBrushState();
void ApplyTextPropertyState();
void ApplyFillColor(unsigned char* color, int numComps);
void ApplyFillAlpha(unsigned char alpha);
void Fill(bool stroke = false);
void FillEvenOdd(bool stroke = false);
void BeginClipPathForTexture();
void RegisterTexturePoints(float* data, int numPoints);
void FillTexture();
// converts input to RGB if needed. Call Delete() on the returned object when
// finished with it.
vtkImageData* PrepareImageData(vtkImageData* in);
void DrawEllipticArcSegments(
float x, float y, float rX, float rY, float startAngle, float stopAngle, bool startPath);
int GetNumberOfArcIterations(float rX, float rY, float startAngle, float stopAngle);
void DrawCrossMarkers(bool highlight, float* points, int n, unsigned char* colors, int nc_comps);
void DrawPlusMarkers(bool highlight, float* points, int n, unsigned char* colors, int nc_comps);
void DrawSquareMarkers(bool highlight, float* points, int n, unsigned char* colors, int nc_comps);
void DrawCircleMarkers(bool highlight, float* points, int n, unsigned char* colors, int nc_comps);
void DrawDiamondMarkers(
bool highlight, float* points, int n, unsigned char* colors, int nc_comps);
void DrawPath(vtkPath* path, float x, float y);
void ApplyTransform();
// This is weird, but the pen width must not be affected by the transform's
// scaling factors. This function returns the unscaled x/y components of
// the pen width.
vtkVector2f GetUnscaledPenWidth();
// Converts a 2D transform matrix into a 3D transform matrix, or vice versa
static void Matrix3ToMatrix4(vtkMatrix3x3* mat3, double mat4[16]);
static void Matrix4ToMatrix3(double mat4[16], vtkMatrix3x3* mat3);
static void Matrix4ToMatrix3(double mat4[16], double mat3[9]);
// Convert a 3D transform matrix to an HPDF transformation.
// trans = {a, b, c, d, x, y}, which define the transform:
// | a b x |
// | c d y |
// | 0 0 1 |
static void Matrix4ToHPDFTransform(const double mat4[16], float hpdfMat[6]);
static void Matrix3ToHPDFTransform(const double mat3[9], float hpdfMat[6]);
static void HPDFTransformToMatrix3(
float a, float b, float c, float d, float x, float y, double mat3[9]);
struct Details;
Details* Impl;
// This is a 3D transform, the 2D version doesn't support push/pop.
vtkNew<vtkTransform> Matrix;
vtkRenderer* Renderer;
float PointSize;
float ClipBox[4]; // x, y, w, h
bool IsInTexturedFill;
float TextureBounds[4]; // xmin, xmax, ymin, ymax; used for placing textures
private:
vtkPDFContextDevice2D(const vtkPDFContextDevice2D&) = delete;
void operator=(const vtkPDFContextDevice2D&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif // vtkPDFContextDevice2D_h
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