LCDPaintDevice Class Reference

The LCDPaintDevice class provides a device to draw on a LCD. More...

#include <lcdpaintengine.h>

Collaboration diagram for LCDPaintDevice:

[legend]List of all members.

Public Member Functions
int	width () const
int	height () const
int	widthMM () const
int	heightMM () const
int	logicalDpiX () const
int	logicalDpiY () const
int	physicalDpiX () const
int	physicalDpiY () const
int	numColors () const
int	depth () const
QPaintEngine *	paintEngine () const
void	setSize (int, int)
void	setController (ControllerInterface *)
Static Public Member Functions
static bool	isControllerInit ()
static ControllerInterface *	controller ()
Protected Member Functions
int	metric (PaintDeviceMetric metric) const
Static Private Attributes
static ControllerInterface *	m_controller = 0
static QSize	m_size

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Detailed Description

With this class you can use QPainter or QPainterPath native.

You don't need to learn another API is this not wonderfull, isn't it?

For example you draw a filled dotted circle with a bounding rectangle you can do it like this:

 LCDPaintDevice device;
 QPainter p;
 p.begin(&device);
   p.drawRect(QRect(0,0,100,100));
   p.setBrush(Qt::Dense7Pattern);
   p.drawEllipse(QRect(0,0,100,100));
 p.end();

If you wan't direct access to the controller you can do it with the static controller() method but check it before with isControllerInit() that the controller is valid an initialized.

See also:

LCDPaintEngine

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Member Function Documentation

ControllerInterface * LCDPaintDevice::controller

(

)

[static]

This method gives you a direct access to the active controller.

Note:

check with isControllerInit() if the controller is valid and initialized

Exceptions:

InternalException

is thrown when no controller is available

Returns:

the active controller

See also:

isControllerInit()

int LCDPaintDevice::depth

(

)

const [inline]

int LCDPaintDevice::height

(

)

const [inline]

int LCDPaintDevice::heightMM

(

)

const [inline]

bool LCDPaintDevice::isControllerInit

(

)

[static]

Returns:

true if the controller is initialized otherwise false

int LCDPaintDevice::logicalDpiX

(

)

const [inline]

int LCDPaintDevice::logicalDpiY

(

)

const [inline]

int LCDPaintDevice::metric

(

PaintDeviceMetric

metric

)

const [protected]

Exceptions:

UnsupportedException

is thrown when you wan't a metric type that the paint device don't know

Parameters:

metric

type which you want to know

Returns:

the value of the metric type

int LCDPaintDevice::numColors

(

)

const [inline]

QPaintEngine * LCDPaintDevice::paintEngine

(

)

const

Returns:

our custom made paint engine

See also:

LCDPaintEngine

int LCDPaintDevice::physicalDpiX

(

)

const [inline]

int LCDPaintDevice::physicalDpiY

(

)

const [inline]

void LCDPaintDevice::setController

(

ControllerInterface *

controller

)

Set a new active controller to the device

Parameters:

controller

is the new controller

void LCDPaintDevice::setSize	(	int	width,
		int	height
	)

Set the display size of the LCD in pixel.

Parameters:

	width	of the LCD
	height	of the LCD

int LCDPaintDevice::width

(

)

const [inline]

int LCDPaintDevice::widthMM

(

)

const [inline]

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Member Data Documentation

ControllerInterface * LCDPaintDevice::m_controller = 0 [static, private]

Hold the active controller

QSize LCDPaintDevice::m_size [static, private]

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

• lcdpaintengine.h
• lcdpaintengine.cpp

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