Sword25::VectorImage Class Reference

Eine Vektorgraphik. More...

#include <vectorimage.h>

Inheritance diagram for Sword25::VectorImage:

Public Member Functions
	VectorImage (const byte *pFileData, uint fileSize, bool &success, const Common::String &fname)
uint	getElementCount () const
const VectorImageElement &	getElement (uint elementNr) const
const Common::Rect &	getBoundingBox () const
int	getWidth () const override
	Returns the width of the image in pixels.
int	getHeight () const override
	Returns the height of the image in pixels.
bool	fill (const Common::Rect *pFillRect=0, uint color=BS_RGB(0, 0, 0)) override
	fills a rectangular section of the image with a color. More...
void	render (int width, int height)
uint	getPixel (int x, int y) override
	Reads out a pixel of the image. More...
bool	isBlitSource () const override
	Checks, if it is allowed to call BS_Image Blit(). More...
bool	isBlitTarget () const override
	Checks, if the BS_Image can be a target image for a Blit call. More...
bool	isScalingAllowed () const override
	Returns true, if the BS_Image is allowed to be scaled by a Blit() call.
bool	isFillingAllowed () const override
	Returns true, if the BS_Image is allowed to be filled by a Fill() call.
bool	isAlphaAllowed () const override
	Returns true, if the BS_Image is allowed to be displayed with an alpha value.
bool	isColorModulationAllowed () const override
	Return true, if the BS_Image is allowed to be displayed with color modulation by a Blit() call.
bool	isSetContentAllowed () const override
	Returns true, if the content of the BS_Image is allowed to be replaced by call of SetContent().
bool	setContent (const byte *pixeldata, uint size, uint offset, uint stride) override
	Fills the content of the image with pixel data. More...
bool	blit (int posX=0, int posY=0, int flipping=Graphics::FLIP_NONE, Common::Rect *pPartRect=NULL, uint color=BS_ARGB(255, 255, 255, 255), int width=-1, int height=-1, RectangleList *updateRects=0) override
	renders the image in the framebuffer More...
Public Member Functions inherited from Sword25::Image
virtual bool	isSolid () const

Detailed Description

Eine Vektorgraphik.

Objekte dieser Klasse enthalten die Informationen eines SWF-Shapes.

Member Function Documentation

fill()

bool Sword25::VectorImage::fill ( const Common::Rect *  pFillRect = 0, uint  color = BS_RGB(0, 0, 0)  )

overridevirtual

fills a rectangular section of the image with a color.

Parameters

pFillRect	Pointer on Common::Rect which specifies the section of the image which is supposed to be filled. If the whole image has to be filled this value is NULL. The default value is NULL.
Color	the 32 Bit color value for filling the image section.

Remarks

It is possible to create transparent rectangulars by using a color with alpha value not equal to 255.

Independent from the color format of the image, it must be given a 32 bit color value. The macros BS_RGB and BS_ARGB can be used for the creation of the color value.

If the rectangular is not completely inside the screen area, it will be automatically trimmed.

Implements Sword25::Image.

getPixel()

uint Sword25::VectorImage::getPixel ( int  x, int  y  )

overridevirtual

Reads out a pixel of the image.

Parameters

X	the X-coordinate of the pixel.
Y	the y-coordinate of the pixel.

Returns

Returns the 32-bit color value of the pixel at the given position.

Remarks

This methode should not be used in no way to read out bigger parts of the image because the method is very slow. The method is rather intended for reading out single pixels of the image..

Implements Sword25::Image.

isBlitSource()

bool Sword25::VectorImage::isBlitSource ( ) const

inlineoverridevirtual

Checks, if it is allowed to call BS_Image Blit().

Returns

Returns false, if a Blit() call is not allowed at this object.

Implements Sword25::Image.

isBlitTarget()

bool Sword25::VectorImage::isBlitTarget ( ) const

inlineoverridevirtual

Checks, if the BS_Image can be a target image for a Blit call.

Returns

Returns false, if a Blit() call with this object as a target is not allowed.

Implements Sword25::Image.

setContent()

bool Sword25::VectorImage::setContent ( const byte *  pixeldata, uint  size, uint  offset, uint  stride  )

overridevirtual

Fills the content of the image with pixel data.

Parameters

Pixeldata	a vector which cotains the pixel data. They must be present in the color format of the image and there must be enough data available for filling the whole image.
Offset	the offset in Byte in Pixeldata-Vector on which the first pixel to write is located. The default value is 0.
Stride	the distance in Byte between the end of line and the beginning of a new line in Pixeldata-Vector. The default value is 0.

Returns

returns false, if the call failed.

Remarks

A call of this methode is only allowd if IsSetContentAllowed() returns true.

Implements Sword25::Image.

blit()

bool Sword25::VectorImage::blit ( int  posX = 0, int  posY = 0, int  flipping = Graphics::FLIP_NONE, Common::Rect *  pPartRect = NULL, uint  color = BS_ARGB(255, 255, 255, 255), int  width = -1, int  height = -1, RectangleList *  updateRects = 0  )

overridevirtual

renders the image in the framebuffer

Parameters

pDest	a pointer to the target image. In most cases this is the framebuffer.
PosX	the position on the X-axis in the target image in pixels where the image is supposed to be rendered. The default value is 0.
PosY	the position on the Y-axis in the target image in pixels where the image is supposed to be rendered. The default value is 0.
Flipping	how the image should be flipped. The default value is Graphics::FLIP_NONE (no flipping)
pSrcPartRect	Pointer on Common::Rect which specifies the section to be rendered. If the whole image has to be rendered the Pointer is NULL. This referes to the unflipped and unscaled image. The default value is NULL.
Color	an ARGB color value, which determines the parameters for the color modulation und alpha blending. The alpha component of the color determines the alpha blending parameter (0 = no covering, 255 = full covering). The color components determines the color for color modulation. The default value is BS_ARGB(255, 255, 255, 255) (full covering, no color modulation). The macros BS_RGB and BS_ARGB can be used for the creation of the color value.
Width	the output width of the screen section. The images will be scaled if the output width of the screen section differs from the image section. The value -1 determines that the image should not be scaled. The default value is -1.
Width	the output height of the screen section. The images will be scaled if the output width of the screen section differs from the image section. The value -1 determines that the image should not be scaled. The default value is -1.

Returns

returns false if the rendering failed.

Remarks

Not all blitting operations of all BS_Image classes are supported.
More information can be find in the class description of BS_Image and the following methodes:

• IsBlitTarget()
• IsScalingAllowed()
• IsFillingAllowed()
• IsAlphaAllowed()
• IsColorModulationAllowed()
• IsSetContentAllowed()

Implements Sword25::Image.

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

• engines/sword25/gfx/image/vectorimage.h