Appendix D - GUIX Brush, Canvas and Gradient Attributes

Brush Styles:

GX_BRUSH_OUTLINE

Value: 0x0000
Description: This brush style applies to shape drawing functions such as gx_canvas_rectangle_draw or gx_canvas_polygon_draw. This style indicates the shape should be outlined, in addition to optionally being filled. If the GX_BRUSH_OUTLINE style is set and the GX_BRUSH_SOLID_FILL is cleared, the shape is only outlined.

GX_BRUSH_SOLID_FILL

Value: 0x0001
Description: This brush style applies to shape drawing functions, and indicates that the requested shape should be filled with a solid color using the current brush fill color.

GX_BRUSH_PIXELMAP_FILL

Value: 0x0002
Description: This brush style applies to shape drawing functions, and indicates that the requested shape should be pattern filled with the current brush pixelmap.

GX_BRUSH_ALIAS

Value: 0x0004
Description: This brush style applies to all line drawing and shape outlines. If this flag is set, lines and outlines are drawing with the more accurate but also more time consuming anti-aliased drawing algorithms. This style flag is only used for 16-bpp color depths and higher.

GX_BRUSH_UNDERLINE

Value: 0x0008
Description: This flag applies to text drawing, and indicates that subsequent text drawn should be underlined.

GX_BRUSH_ROUND

Value: 0x0010
Description: This flag applies to line drawing, and indicates that line ends are drawn with a round or circular shape, rather than the default square shape.

Canvas Flags:

GX_CANVAS_SIMPLE

GX_CANVAS_MANAGED

Value: 0x02
Description: A canvas which automatically flushed to the active display, either as part of the composite building process or as part of the buffer toggle operation for single-canvas architectures.

GX_CANVAS_VISIBLE

Value: 0x04
Description: This flag can be used to turn on and off a canvas, without losing the canvas drawing contents.

GX_CANVAS_MODIFIED

GX_CANVAS_COMPOSITE

Value: 0x20
Description: This flag is used by the application when configuring a multiple-canvas system which will composite multiple managed canvases into the composite canvas, and the composite is the driven to the hardware frame buffer.

Gradient Types:

GX_GRADIENT_TYPE_VERTICAL

GX_GRADIENT_TYPE_ALPHA

Value: 0x02
Description: Creates an alpha-map style gradient. This is currently the only gradient style supported.

GX_GRADIENT_TYPE_MIRROR

Value: 0x04
Description: This flag indicates that the gradient should peak at the center of the width/height range, and return to the starting value as it reaches the right/bottom edge. Without this style flag, the gradient will be a linear gradient from top-to-bottom or left-to-right, depending on the GX_GRADIENT_TYPE_VERTICAL flag.