ocpnDC Class Reference

Device context class that can use either wxDC or OpenGL for drawing. More...

#include <ocpndc.h>

Public Member Functions
	ocpnDC (glChartCanvas &canvas)
	ocpnDC (wxGLCanvas &canvas)
	ocpnDC (wxDC &pdc)
void	Init ()
void	SetGLCanvas (glChartCanvas *canvas)
void	SetBackground (const wxBrush &brush)
void	SetPen (const wxPen &pen)
void	SetBrush (const wxBrush &brush)
void	SetTextForeground (const wxColour &colour)
void	SetFont (const wxFont &font)
void	SetGLStipple () const
const wxPen &	GetPen () const
const wxBrush &	GetBrush () const
const wxFont &	GetFont () const
void	GetSize (wxCoord *width, wxCoord *height) const
void	DrawLine (wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, bool b_hiqual=true)
	Draw a line between two points using either wxDC or OpenGL.
void	DrawLines (int n, wxPoint points[], wxCoord xoffset=0, wxCoord yoffset=0, bool b_hiqual=true)
void	DrawGLThickLine (float x1, float y1, float x2, float y2, wxPen pen, bool b_hiqual)
void	DrawGLThickLines (int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, wxPen pen, bool b_hiqual)
void	StrokeLine (wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
void	StrokeLine (wxPoint a, wxPoint b)
void	StrokeLines (int n, wxPoint *points)
void	Clear ()
void	DrawRectangle (wxCoord x, wxCoord y, wxCoord w, wxCoord h)
void	DrawRoundedRectangle (wxCoord x, wxCoord y, wxCoord w, wxCoord h, wxCoord rr)
void	DrawCircle (wxCoord x, wxCoord y, wxCoord radius)
void	DrawCircle (const wxPoint &pt, wxCoord radius)
void	StrokeCircle (wxCoord x, wxCoord y, wxCoord radius)
void	DrawEllipse (wxCoord x, wxCoord y, wxCoord width, wxCoord height)
void	DrawPolygon (int n, wxPoint points[], wxCoord xoffset=0, wxCoord yoffset=0, float scale=1.0, float angle=0.0)
void	DrawPolygonTessellated (int n, wxPoint points[], wxCoord xoffset=0, wxCoord yoffset=0)
void	StrokePolygon (int n, wxPoint points[], wxCoord xoffset=0, wxCoord yoffset=0, float scale=1.0)
void	DrawBitmap (const wxBitmap &bitmap, wxCoord x, wxCoord y, bool usemask)
void	DrawText (const wxString &text, wxCoord x, wxCoord y, float angle=0.0)
void	GetTextExtent (const wxString &string, wxCoord *w, wxCoord *h, wxCoord *descent=NULL, wxCoord *externalLeading=NULL, wxFont *font=NULL)
void	ResetBoundingBox ()
void	CalcBoundingBox (wxCoord x, wxCoord y)
void	DestroyClippingRegion ()
wxDC *	GetDC () const
void	SetDPIFactor (double factor)
void	SetVP (ViewPort vp)

Static Public Member Functions
static void	SetGLAttrs (bool highQuality)

Public Attributes
int	m_canvasIndex

Protected Member Functions
bool	ConfigurePen ()
bool	ConfigureBrush ()
void	GLDrawBlendData (wxCoord x, wxCoord y, wxCoord w, wxCoord h, int format, const unsigned char *data)
void	drawrrhelperGLES2 (wxCoord x0, wxCoord y0, wxCoord r, int quadrant, int steps)
void	BuildShaders ()

Protected Attributes
glChartCanvas *	m_glchartCanvas
wxGLCanvas *	m_glcanvas
wxDC *	dc
wxPen	m_pen
wxBrush	m_brush
wxColour	m_textforegroundcolour
wxFont	m_font
bool	m_buseTex
float *	workBuf
size_t	workBufSize
unsigned int	workBufIndex
double	m_dpi_factor
ViewPort	m_vp

Detailed Description

Device context class that can use either wxDC or OpenGL for drawing.

Provides a unified interface for drawing operations, abstracting the underlying context. Allows seamless switching between contexts and offers various drawing methods.

Definition at line 64 of file ocpndc.h.

Constructor & Destructor Documentation

ocpnDC() [1/4]

ocpnDC::ocpnDC

(

glChartCanvas &

canvas

)

Definition at line 80 of file ocpndc.cpp.

ocpnDC() [2/4]

ocpnDC::ocpnDC

(

wxGLCanvas &

canvas

)

Definition at line 95 of file ocpndc.cpp.

ocpnDC() [3/4]

ocpnDC::ocpnDC

(

wxDC &

pdc

)

Definition at line 107 of file ocpndc.cpp.

ocpnDC() [4/4]

ocpnDC::ocpnDC

(

)

Definition at line 127 of file ocpndc.cpp.

~ocpnDC()

ocpnDC::~ocpnDC

(

)

Definition at line 139 of file ocpndc.cpp.

Member Function Documentation

CalcBoundingBox()

void ocpnDC::CalcBoundingBox	(	wxCoord	x,
		wxCoord	y )

Definition at line 1872 of file ocpndc.cpp.

Clear()

void ocpnDC::Clear

(

)

Definition at line 187 of file ocpndc.cpp.

ConfigureBrush()

bool ocpnDC::ConfigureBrush ( )

protected

Definition at line 1891 of file ocpndc.cpp.

ConfigurePen()

bool ocpnDC::ConfigurePen ( )

protected

Definition at line 1876 of file ocpndc.cpp.

DestroyClippingRegion()

void ocpnDC::DestroyClippingRegion ( )

inline

Definition at line 147 of file ocpndc.h.

DrawBitmap()

void ocpnDC::DrawBitmap	(	const wxBitmap &	bitmap,
		wxCoord	x,
		wxCoord	y,
		bool	usemask )

Definition at line 1562 of file ocpndc.cpp.

DrawCircle() [1/2]

void ocpnDC::DrawCircle ( const wxPoint & pt, wxCoord radius )

inline

Definition at line 124 of file ocpndc.h.

DrawCircle() [2/2]

void ocpnDC::DrawCircle	(	wxCoord	x,
		wxCoord	y,
		wxCoord	radius )

Definition at line 1047 of file ocpndc.cpp.

DrawEllipse()

void ocpnDC::DrawEllipse	(	wxCoord	x,
		wxCoord	y,
		wxCoord	width,
		wxCoord	height )

Definition at line 1146 of file ocpndc.cpp.

DrawGLThickLine()

void ocpnDC::DrawGLThickLine	(	float	x1,
		float	y1,
		float	x2,
		float	y2,
		wxPen	pen,
		bool	b_hiqual )

Definition at line 360 of file ocpndc.cpp.

DrawGLThickLines()

void ocpnDC::DrawGLThickLines	(	int	n,
		wxPoint	points[],
		wxCoord	xoffset,
		wxCoord	yoffset,
		wxPen	pen,
		bool	b_hiqual )

Definition at line 698 of file ocpndc.cpp.

DrawLine()

void ocpnDC::DrawLine	(	wxCoord	x1,
		wxCoord	y1,
		wxCoord	x2,
		wxCoord	y2,
		bool	b_hiqual = true )

Draw a line between two points using either wxDC or OpenGL.

When using OpenGL, this function supports different line qualities and widths. For high quality lines (b_hiqual=true), it enables anti-aliasing and line smoothing. The function also handles dashed lines via line stippling in OpenGL mode.

Parameters

x1	The x-coordinate of the starting point, in physical pixels.
y1	The y-coordinate of the starting point, in physical pixels.
x2	The x-coordinate of the ending point, in physical pixels.
y2	The y-coordinate of the ending point, in physical pixels.
b_hiqual	If true, enables high quality rendering with anti-aliasing and line smoothing in OpenGL mode. Has no effect in wxDC mode.

Definition at line 476 of file ocpndc.cpp.

DrawLines()

void ocpnDC::DrawLines	(	int	n,
		wxPoint	points[],
		wxCoord	xoffset = 0,
		wxCoord	yoffset = 0,
		bool	b_hiqual = true )

Definition at line 713 of file ocpndc.cpp.

DrawPolygon()

void ocpnDC::DrawPolygon	(	int	n,
		wxPoint	points[],
		wxCoord	xoffset = 0,
		wxCoord	yoffset = 0,
		float	scale = 1.0,
		float	angle = 0.0 )

Definition at line 1167 of file ocpndc.cpp.

DrawPolygonTessellated()

void ocpnDC::DrawPolygonTessellated	(	int	n,
		wxPoint	points[],
		wxCoord	xoffset = 0,
		wxCoord	yoffset = 0 )

Definition at line 1460 of file ocpndc.cpp.

DrawRectangle()

void ocpnDC::DrawRectangle	(	wxCoord	x,
		wxCoord	y,
		wxCoord	w,
		wxCoord	h )

Definition at line 883 of file ocpndc.cpp.

DrawRoundedRectangle()

void ocpnDC::DrawRoundedRectangle	(	wxCoord	x,
		wxCoord	y,
		wxCoord	w,
		wxCoord	h,
		wxCoord	rr )

Definition at line 963 of file ocpndc.cpp.

drawrrhelperGLES2()

void ocpnDC::drawrrhelperGLES2 ( wxCoord x0, wxCoord y0, wxCoord r, int quadrant, int steps )

protected

Definition at line 926 of file ocpndc.cpp.

DrawText()

void ocpnDC::DrawText	(	const wxString &	text,
		wxCoord	x,
		wxCoord	y,
		float	angle = 0.0 )

Definition at line 1639 of file ocpndc.cpp.

GetBrush()

const wxBrush & ocpnDC::GetBrush

(

)

const

Definition at line 260 of file ocpndc.cpp.

GetDC()

wxDC * ocpnDC::GetDC ( ) const

inline

Definition at line 149 of file ocpndc.h.

GetFont()

const wxFont & ocpnDC::GetFont

(

)

const

Definition at line 265 of file ocpndc.cpp.

GetPen()

const wxPen & ocpnDC::GetPen

(

)

const

Definition at line 255 of file ocpndc.cpp.

GetSize()

void ocpnDC::GetSize	(	wxCoord *	width,
		wxCoord *	height ) const

Definition at line 270 of file ocpndc.cpp.

GetTextExtent()

void ocpnDC::GetTextExtent	(	const wxString &	string,
		wxCoord *	w,
		wxCoord *	h,
		wxCoord *	descent = NULL,
		wxCoord *	externalLeading = NULL,
		wxFont *	font = NULL )

Definition at line 1834 of file ocpndc.cpp.

GLDrawBlendData()

void ocpnDC::GLDrawBlendData ( wxCoord x, wxCoord y, wxCoord w, wxCoord h, int format, const unsigned char * data )

protected

Definition at line 1903 of file ocpndc.cpp.

Init()

void ocpnDC::Init

(

)

Definition at line 155 of file ocpndc.cpp.

ResetBoundingBox()

void ocpnDC::ResetBoundingBox

(

)

Definition at line 1868 of file ocpndc.cpp.

SetBackground()

void ocpnDC::SetBackground

(

const wxBrush &

brush

)

Definition at line 209 of file ocpndc.cpp.

SetBrush()

void ocpnDC::SetBrush

(

const wxBrush &

brush

)

Definition at line 234 of file ocpndc.cpp.

SetDPIFactor()

void ocpnDC::SetDPIFactor ( double factor )

inline

Definition at line 150 of file ocpndc.h.

SetFont()

void ocpnDC::SetFont

(

const wxFont &

font

)

Definition at line 248 of file ocpndc.cpp.

SetGLAttrs()

void ocpnDC::SetGLAttrs ( bool highQuality )

static

Definition at line 285 of file ocpndc.cpp.

SetGLStipple()

void ocpnDC::SetGLStipple

(

)

const

Definition at line 302 of file ocpndc.cpp.

SetPen()

void ocpnDC::SetPen

(

const wxPen &

pen

)

Definition at line 224 of file ocpndc.cpp.

SetTextForeground()

void ocpnDC::SetTextForeground

(

const wxColour &

colour

)

Definition at line 241 of file ocpndc.cpp.

SetVP()

void ocpnDC::SetVP

(

ViewPort

vp

)

Definition at line 1917 of file ocpndc.cpp.

StrokeCircle()

void ocpnDC::StrokeCircle	(	wxCoord	x,
		wxCoord	y,
		wxCoord	radius )

Definition at line 1128 of file ocpndc.cpp.

StrokeLine() [1/2]

void ocpnDC::StrokeLine	(	wxCoord	x1,
		wxCoord	y1,
		wxCoord	x2,
		wxCoord	y2 )

Definition at line 850 of file ocpndc.cpp.

StrokeLine() [2/2]

void ocpnDC::StrokeLine ( wxPoint a, wxPoint b )

inline

Definition at line 116 of file ocpndc.h.

StrokeLines()

void ocpnDC::StrokeLines	(	int	n,
		wxPoint *	points )

Definition at line 863 of file ocpndc.cpp.

StrokePolygon()

void ocpnDC::StrokePolygon	(	int	n,
		wxPoint	points[],
		wxCoord	xoffset = 0,
		wxCoord	yoffset = 0,
		float	scale = 1.0 )

Definition at line 1537 of file ocpndc.cpp.

Member Data Documentation

dc

wxDC* ocpnDC::dc

protected

Definition at line 188 of file ocpndc.h.

m_brush

wxBrush ocpnDC::m_brush

protected

Definition at line 190 of file ocpndc.h.

m_buseTex

bool ocpnDC::m_buseTex

protected

Definition at line 194 of file ocpndc.h.

m_canvasIndex

int ocpnDC::m_canvasIndex

Definition at line 168 of file ocpndc.h.

m_dpi_factor

double ocpnDC::m_dpi_factor

protected

Definition at line 203 of file ocpndc.h.

m_font

wxFont ocpnDC::m_font

protected

Definition at line 192 of file ocpndc.h.

m_glcanvas

wxGLCanvas* ocpnDC::m_glcanvas

protected

Definition at line 186 of file ocpndc.h.

m_glchartCanvas

glChartCanvas* ocpnDC::m_glchartCanvas

protected

Definition at line 185 of file ocpndc.h.

m_pen

wxPen ocpnDC::m_pen

protected

Definition at line 189 of file ocpndc.h.

m_textforegroundcolour

wxColour ocpnDC::m_textforegroundcolour

protected

Definition at line 191 of file ocpndc.h.

m_vp

ViewPort ocpnDC::m_vp

protected

Definition at line 204 of file ocpndc.h.

workBuf

float* ocpnDC::workBuf

protected

Definition at line 200 of file ocpndc.h.

workBufIndex

unsigned int ocpnDC::workBufIndex

protected

Definition at line 202 of file ocpndc.h.

workBufSize

size_t ocpnDC::workBufSize

protected

Definition at line 201 of file ocpndc.h.

---

The documentation for this class was generated from the following files:

• /home/mk/src/OpenCPN/gui/include/gui/ocpndc.h
• /home/mk/src/OpenCPN/gui/src/ocpndc.cpp