ej.microvg

Interface VGDrawing

All Known Implementing Classes:

BufferedVectorImageDrawer, DisplayDrawer, NemaBufferedVectorImageDrawer, NemaDisplayDrawer, VgliteBufferedVectorImageDrawer

public interface VGDrawing

This interface provides all drawing methods useful to implement MicroVG drawing native methods.

Method Summary

Modifier and Type	Method and Description
default int	drawImage(ej.microui.display.MicroUIGraphicsContext gc, MicroVGImage image, float[] matrix, int alpha, long elapsedTime, float[] colorMatrix) Draws an image with transformation and opacity.
default void	drawPath(ej.microui.display.MicroUIGraphicsContext gc, java.awt.geom.GeneralPath path, float x, float y, float[] matrix, int fillRule, int blend, VGPaint paint) Draws a general path filled with the given color representation.
default int	drawString(ej.microui.display.MicroUIGraphicsContext gc, char[] string, int face, float size, float x, float y, float[] matrix, int blendMode, VGPaint p, float letterSpacing, float radius, int direction) Draws a string with the given painter.
ej.microui.display.MicroUIImageFormat	handledFormat() Gets the supported buffered image format.

Method Detail

handledFormat

ej.microui.display.MicroUIImageFormat handledFormat()

Gets the supported buffered image format.

Returns:

the supported buffered image format

drawPath

default void drawPath(ej.microui.display.MicroUIGraphicsContext gc,
                      java.awt.geom.GeneralPath path,
                      float x,
                      float y,
                      float[] matrix,
                      int fillRule,
                      int blend,
                      VGPaint paint)

Draws a general path filled with the given color representation.

Parameters:

gc - the destination

path - the path to draw

x - the destination X coordinate

y - the destination Y coordinate

matrix - the deformation to apply

fillRule - the fill type

blend - the blend mode

paint - the color representation to use

drawImage

default int drawImage(ej.microui.display.MicroUIGraphicsContext gc,
                      MicroVGImage image,
                      float[] matrix,
                      int alpha,
                      long elapsedTime,
                      float[] colorMatrix)

Draws an image with transformation and opacity. Optionally apply an animation and / or a color filtering.

Parameters:

gc - the graphics context to draw on

image - the image to draw

matrix - the transformation matrix to apply

alpha - the global opacity rendering value

elapsedTime - the elapsed time since the beginning of the animation, in milliseconds

colorMatrix - the color matrix used to transform colors

Returns:

a VectorGraphicsException error code

drawString

default int drawString(ej.microui.display.MicroUIGraphicsContext gc,
                       char[] string,
                       int face,
                       float size,
                       float x,
                       float y,
                       float[] matrix,
                       int blendMode,
                       VGPaint p,
                       float letterSpacing,
                       float radius,
                       int direction)

Draws a string with the given painter. Default implementation redirects this drawing to the LLVGEngine.drawString(MicroUIGraphicsContext, char[], int, float, float, float, float[], int, VGPaint, float, float, int) method.

Parameters:

gc - the destination

string - the array of characters to draw

face - the font face to use

size - the font size, in pixels

x - the destination X coordinate

y - the destination Y coordinate

matrix - the deformation to apply

blendMode - the blend mode

p - the color representation to use

letterSpacing - the extra letter spacing to use

radius - the radius of the circle

direction - the direction of the text along the circle

Returns:

LLVGPainter.RETURN_SUCCESS on success or an error code