pp::Graphics2D_Dev Class Reference

#include <graphics_2d_dev.h>

Inheritance diagram for pp::Graphics2D_Dev:

Collaboration diagram for pp::Graphics2D_Dev:

Public Member Functions
	Graphics2D_Dev ()
	Graphics2D_Dev (const Graphics2D &other)
virtual	~Graphics2D_Dev ()
bool	SetScale (float scale)
float	GetScale ()
Public Member Functions inherited from pp::Graphics2D
	Graphics2D ()
	Graphics2D (const Graphics2D &other)
	Graphics2D (const InstanceHandle &instance, const Size &size, bool is_always_opaque)
virtual	~Graphics2D ()
Graphics2D &	operator= (const Graphics2D &other)
const Size &	size () const
void	PaintImageData (const ImageData &image, const Point &top_left)
void	PaintImageData (const ImageData &image, const Point &top_left, const Rect &src_rect)
void	Scroll (const Rect &clip, const Point &amount)
void	ReplaceContents (ImageData *image)
int32_t	Flush (const CompletionCallback &cc)
bool	SetScale (float scale)
float	GetScale ()
Public Member Functions inherited from pp::Resource
	Resource ()
	The default constructor. More...
	Resource (const Resource &other)
virtual	~Resource ()
	Destructor. More...
Resource &	operator= (const Resource &other)
bool	is_null () const
PP_Resource	pp_resource () const
PP_Resource	detach ()

Static Public Member Functions
static bool	SupportsScale ()
	Returns true if SetScale and GetScale are supported. False if not. More...

Additional Inherited Members
Protected Member Functions inherited from pp::Resource
	Resource (PP_Resource resource)
	Resource (PassRef, PP_Resource resource)
void	PassRefFromConstructor (PP_Resource resource)

Detailed Description

Definition at line 14 of file graphics_2d_dev.h.

Constructor & Destructor Documentation

pp::Graphics2D_Dev::Graphics2D_Dev ( )

inline

Default constructor for creating an is_null() Graphics2D_Dev object.

Definition at line 18 of file graphics_2d_dev.h.

pp::Graphics2D_Dev::Graphics2D_Dev ( const Graphics2D &  other )

inline

Definition at line 22 of file graphics_2d_dev.h.

virtual pp::Graphics2D_Dev::~Graphics2D_Dev ( )

inlinevirtual

Definition at line 24 of file graphics_2d_dev.h.

Member Function Documentation

float pp::Graphics2D_Dev::GetScale

(

)

GetScale() gets the scale factor that will be applied when painting the graphics context onto the output device.

Returns

Returns the scale factor for the graphics context. If the resource is invalid, 0.0 will be returned.

bool pp::Graphics2D_Dev::SetScale

(

float

scale

)

SetScale() sets the scale factor that will be applied when painting the graphics context onto the output device. Typically, if rendering at device resolution is desired, the context would be created with the width and height scaled up by the view's GetDeviceScale and SetScale called with a scale of 1.0 / GetDeviceScale(). For example, if the view resource passed to DidChangeView has a rectangle of (w=200, h=100) and a device scale of 2.0, one would call Create with a size of (w=400, h=200) and then call SetScale with 0.5. One would then treat each pixel in the context as a single device pixel.

Parameters

[in]

scale

The scale to apply when painting.

Returns

Returns true on success or false if the resource is invalid or the scale factor is 0 or less.

static bool pp::Graphics2D_Dev::SupportsScale ( )

static

Returns true if SetScale and GetScale are supported. False if not.

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

• dev/graphics_2d_dev.h