Painters

Painters are lightweight classes that know how to draw a single node type using the document context’s rendering backend. Each painter implements the IPainter interface.

IPainter

class IPainter

Interface for painter classes responsible for drawing elements onto a PDF context.

Subclassed by docraft::renderer::painter::DocraftCirclePainter, docraft::renderer::painter::DocraftImagePainter, docraft::renderer::painter::DocraftLinePainter, docraft::renderer::painter::DocraftPolygonPainter, docraft::renderer::painter::DocraftRectanglePainter, docraft::renderer::painter::DocraftTablePainter, docraft::renderer::painter::DocraftTextPainter, docraft::renderer::painter::DocraftTrianglePainter, docraft::renderer::painter::docraft_blank_line_painter

Public Functions

virtual ~IPainter() = default: Virtual destructor.

virtual void draw(const std::shared_ptr<DocraftDocumentContext> &context) = 0

Draws the element using the provided document context.

Parameters:: context – Document context providing backend access and state.

DocraftTextPainter

Handles alignment, justification, and underline rendering for text nodes.

class DocraftTextPainter : public docraft::renderer::painter::IPainter 

Painter that draws DocraftText nodes.

Handles alignment, justification, and optional underline rendering.

Public Functions

explicit DocraftTextPainter(const model::DocraftText &text_node)

Creates a painter for a given text node.

Parameters:: text_node – Text node to render.

virtual void draw(const std::shared_ptr<DocraftDocumentContext> &context) override

Draws the text node using the provided context.

Parameters:: context – Document context.

DocraftRectanglePainter

Renders background and border for rectangle nodes.

class DocraftRectanglePainter : public docraft::renderer::painter::IPainter 

Painter that draws DocraftRectangle nodes.

Renders background and border before child content.

Public Functions

DocraftRectanglePainter(const model::DocraftRectangle &rectangle_node)

Creates a rectangle painter bound to the rectangle node.

Parameters:: rectangle_node – Rectangle node.

virtual void draw(const std::shared_ptr<DocraftDocumentContext> &context) override

Draws the rectangle using the provided context.

Parameters:: context – Document context.

DocraftCirclePainter

class DocraftCirclePainter : public docraft::renderer::painter::IPainter 

Painter that draws DocraftCircle nodes.

Public Functions

explicit DocraftCirclePainter(const model::DocraftCircle &circle_node)

Creates a circle painter bound to the circle node.

Parameters:: circle_node – Circle node.

virtual void draw(const std::shared_ptr<DocraftDocumentContext> &context) override

Draws the circle using the provided context.

Parameters:: context – Document context.

DocraftTrianglePainter

class DocraftTrianglePainter : public docraft::renderer::painter::IPainter 

Painter that draws DocraftTriangle nodes.

Public Functions

explicit DocraftTrianglePainter(const model::DocraftTriangle &triangle_node)

Creates a triangle painter bound to the triangle node.

Parameters:: triangle_node – Triangle node.

virtual void draw(const std::shared_ptr<DocraftDocumentContext> &context) override

Draws the triangle using the provided context.

Parameters:: context – Document context.

DocraftLinePainter

class DocraftLinePainter : public docraft::renderer::painter::IPainter 

Painter that draws DocraftLine nodes.

Public Functions

explicit DocraftLinePainter(const model::DocraftLine &line_node)

Creates a line painter bound to the line node.

Parameters:: line_node – Line node.

virtual void draw(const std::shared_ptr<DocraftDocumentContext> &context) override

Draws the line using the provided context.

Parameters:: context – Document context.

DocraftPolygonPainter

class DocraftPolygonPainter : public docraft::renderer::painter::IPainter 

Painter that draws DocraftPolygon nodes.

Public Functions

explicit DocraftPolygonPainter(const model::DocraftPolygon &polygon_node)

Creates a polygon painter bound to the polygon node.

Parameters:: polygon_node – Polygon node.

virtual void draw(const std::shared_ptr<DocraftDocumentContext> &context) override

Draws the polygon using the provided context.

Parameters:: context – Document context.

DocraftImagePainter

Supports file-based and in-memory image sources.

class DocraftImagePainter : public docraft::renderer::painter::IPainter 

Painter that draws DocraftImage nodes.

Supports file-based and in-memory image sources.

Public Functions

explicit DocraftImagePainter(const model::DocraftImage &image_node)

Creates an image painter bound to the image node.

Parameters:: image_node – Image node.

virtual void draw(const std::shared_ptr<DocraftDocumentContext> &context) override

Draws the image using the provided context.

Parameters:: context – Document context.

DocraftTablePainter

Draws headers, grid lines, and cell content.

class DocraftTablePainter : public docraft::renderer::painter::IPainter 

Painter that draws DocraftTable nodes.

Draws headers, grid lines, and cell content using the current context.

Public Functions

DocraftTablePainter(const model::DocraftTable &table_node)

Creates a table painter bound to the table node.

Parameters:: table_node – Table node.

virtual void draw(const std::shared_ptr<DocraftDocumentContext> &context) override

Draws the table using the provided context.

Parameters:: context – Document context.

docraft_blank_line_painter

Advances layout for blank lines (no drawing).

class docraft_blank_line_painter : public docraft::renderer::painter::IPainter 

Painter that advances layout for blank lines.

Performs no drawing but updates the cursor state.

Public Functions

explicit docraft_blank_line_painter(const model::DocraftBlankLine &blank_line_node)

Creates a blank-line painter bound to the blank line node.

Parameters:: blank_line_node – Blank line node.

virtual void draw(const std::shared_ptr<DocraftDocumentContext> &context) override

Draws the blank line using the provided context.

Parameters:: context – Document context.