Class: Fox::FXBitmap

A bitmap is a rectangular array of pixels. It supports two representations of these pixels: a client-side pixel buffer, and a server-side pixmap which is stored in an organization directly compatible with the screen, for fast drawing onto the device. The server-side representation is not directly accessible from the current process at it lives in the process of the X server or GDI (on Microsoft Windows). The client-side pixel array is of size height x (width+7)/8 bytes; in other words, 8 pixels packed into a single byte, starting with bit zero on the left.

Image rendering hints

`BITMAP_KEEP`:	Keep pixel data in client
`BITMAP_OWNED`:	Pixel data is owned by image
`BITMAP_SHMI`:	Using shared memory image
`BITMAP_SHMP`:	Using shared memory pixmap

Methods

crop data fill getPixel loadPixels mirror new options options= release render rotate savePixels scale setPixel

Public Class methods

new(app, pixels=nil, opts=0, width=1, height=1) {|theBitmap| ...}

Return an initialized FXBitmap instance. If a client-side pixel buffer (the pixels argument) has been specified, the bitmap does not own that pixel buffer unless the BITMAP_OWNED flag is set. If the BITMAP_OWNED flag is set, but a nil value for pixels is passed in, a pixel buffer will be automatically created and will be owned by the bitmap. The flags BITMAP_SHMI and BITMAP_SHMP may be specified for large bitmaps to instruct FXBitmap#render to use shared memory to communicate with the server.