Bitmap manipulation

Functions
	G2DcreateAlphaBitmap (alphabmp, x, y, left, right, ww, hh, w, h)
	Create a resized alpha bitmap. More...
	G2DcreateAlphaBitmapRollover (alphabmp, x, y, left, right, ww, hh, w, h)
	Create a resized alpha bitmap rollover (5 states) More...
	G2DloadPngToBmp (chan, path)
	Load an alpha bitmap file (png) to a bitmap. More...
	G2DloadPngToBmpPack (chan, path)
	Load an alpha bitmap file (png) to a bitmap. More...
	G2DloadBmp (chan, path)
	Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a bitmap. More...
	G2DloadBmpPack (chan, file)
	Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a bitmap. More...
	G2DloadAlphaBmp (chan, path)
	Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a AlphaBitmap. More...
	G2DloadAlphaBmpPack (chan, file)
	Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a AlphaBitmap. More...
	G2DconvertBmpToAlphaBmp (chan, bmp)
	Convert a bitmap to a AlphaBitmap. More...
	G2DstrechBitmap (chan, bmp, width, height, bcolor)
	Strech a bitmap to a new size and keep ratio. More...
	G2DstrechBitmapToMaxSize (chan, bmp, width, height)
	Strech a bitmap to a new size and keep ratio without borders. More...
	G2DstrechAlphaBitmap (chan, bmp, width, height, keepratio, bcolor)
	Strech an alpha bitmap to a new size and keep ratio. More...
	G2DcopyAlphaBitmap (chan, bmp, px, py, pw, ph)
	Copy an alpha bitmap rectangle to a new alpha bitmap. More...
	G2DcreateLayer (chan, w, h, border, bcolor, color, opacity)
	Create an AlphaBitmap with border, backcolor and opacity. More...
	G2DsetLayer (chan, alphabmp, w, h, border, bcolor, color, opacity)
	Modify an AlphaBitmap with border, backcolor and opacity. More...

Detailed Description

Bitmap manipulation

Function Documentation

G2DcreateAlphaBitmap()

G2DcreateAlphaBitmap	(	alphabmp	,
		x	,
		y	,
		left	,
		right	,
		ww	,
		hh	,
		w	,
		h
	)

Create a resized alpha bitmap.

Prototype: fun [AlphaBitmap I I I I I I I I] AlphaBitmap

Parameters

AlphaBitmap	: source alpha bitmap
I	: x decal
I	: y decal
I	: left marge
I	: right marge
I	: fixed width
I	: fixed height
I	: final width
I	: final height

Returns

AlphaBitmap : the resized alpha bitmap

G2DcreateAlphaBitmapRollover()

G2DcreateAlphaBitmapRollover	(	alphabmp	,
		x	,
		y	,
		left	,
		right	,
		ww	,
		hh	,
		w	,
		h
	)

Create a resized alpha bitmap rollover (5 states)

Prototype: fun [AlphaBitmap I I I I I I I I] AlphaBitmap

Parameters

AlphaBitmap	: source alpha bitmap
I	: x decal
I	: y decal
I	: left marge
I	: right marge
I	: fixed width
I	: fixed height
I	: final width
I	: final height

Returns

AlphaBitmap : the resized alpha bitmap rollover (5 states)

G2DloadPngToBmp()

G2DloadPngToBmp	(	chan	,
		path
	)

Load an alpha bitmap file (png) to a bitmap.

Prototype: fun [Chn S] ObjBitmap

Parameters

Chn	: channel
S	: file path in scol partition

Returns

ObjBitmap : the loaded bitmap

G2DloadPngToBmpPack()

G2DloadPngToBmpPack	(	chan	,
		path
	)

Load an alpha bitmap file (png) to a bitmap.

Prototype: fun [Chn S] ObjBitmap

Parameters

Chn	: channel
P	: file

Returns

ObjBitmap : the loaded bitmap

G2DloadBmp()

G2DloadBmp	(	chan	,
		path
	)

Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a bitmap.

Prototype: fun [Chn S] ObjBitmap

Parameters

Chn	: channel
S	: file path in scol partition

Returns

ObjBitmap : the loaded bitmap

G2DloadBmpPack()

G2DloadBmpPack	(	chan	,
		file
	)

Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a bitmap.

Prototype: fun [Chn S] ObjBitmap

Parameters

Chn	: channel
P	: file

Returns

ObjBitmap : the loaded bitmap

G2DloadAlphaBmp()

G2DloadAlphaBmp	(	chan	,
		path
	)

Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a AlphaBitmap.

Prototype: fun [Chn S] AlphaBitmap

Parameters

Chn	: channel
S	: file path in scol partition

Returns

AlphaBitmap : the loaded AlphaBitmap

G2DloadAlphaBmpPack()

G2DloadAlphaBmpPack	(	chan	,
		file
	)

Load an bitmap (bmp, jpg, tga) or alphabitmap (png) file to a AlphaBitmap.

Prototype: fun [Chn S] AlphaBitmap

Parameters

Chn	: channel
P	: file

Returns

AlphaBitmap : the loaded AlphaBitmap

G2DconvertBmpToAlphaBmp()

G2DconvertBmpToAlphaBmp	(	chan	,
		bmp
	)

Convert a bitmap to a AlphaBitmap.

Prototype: fun [Chn ObjBitmap] AlphaBitmap

Parameters

Chn	: channel
ObjBitmap	: bitmap to convert

Returns

AlphaBitmap : the AlphaBitmap

G2DstrechBitmap()

G2DstrechBitmap	(	chan	,
		bmp	,
		width	,
		height	,
		bcolor
	)

Strech a bitmap to a new size and keep ratio.

Prototype: fun [Chn ObjBitmap I I I] ObjBitmap

Parameters

Chn	: channel
ObjBitmap	: source bitmap
I	: destination width
I	: destination height
I	: background color

Returns

ObjBitmap : the bitmap in new size

G2DstrechBitmapToMaxSize()

G2DstrechBitmapToMaxSize	(	chan	,
		bmp	,
		width	,
		height
	)

Strech a bitmap to a new size and keep ratio without borders.

Prototype: fun [Chn ObjBitmap I I] ObjBitmap

Parameters

Chn	: channel
ObjBitmap	: source bitmap
I	: destination max width
I	: destination max height

Returns

ObjBitmap : the bitmap in new size

G2DstrechAlphaBitmap()

G2DstrechAlphaBitmap	(	chan	,
		bmp	,
		width	,
		height	,
		keepratio	,
		bcolor
	)

Strech an alpha bitmap to a new size and keep ratio.

Prototype: fun [Chn ObjAlphaBitmap I I I I] ObjAlphaBitmap

Parameters

Chn	: channel
ObjAlphaBitmap	: source alpha bitmap
I	: destination width
I	: destination height
I	: keep ratio (1 to enable, 0 otherwise)
I	: background color

Returns

ObjAlphaBitmap : the alpha bitmap in new size

G2DcopyAlphaBitmap()

G2DcopyAlphaBitmap	(	chan	,
		bmp	,
		px	,
		py	,
		pw	,
		ph
	)

Copy an alpha bitmap rectangle to a new alpha bitmap.

Prototype: fun [Chn ObjAlphaBitmap I I I I] ObjAlphaBitmap

Parameters

Chn	: channel
ObjAlphaBitmap	: source alpha bitmap
I	: rectangle pos x
I	: rectangle pos y
I	: rectangle width
I	: rectangle height

Returns

ObjAlphaBitmap : the new alpha bitmap

G2DcreateLayer()

G2DcreateLayer	(	chan	,
		w	,
		h	,
		border	,
		bcolor	,
		color	,
		opacity
	)

Create an AlphaBitmap with border, backcolor and opacity.

Prototype: fun [Chn I I I I I I] AlphaBitmap

Parameters

Chn	: channel
I	: width
I	: height
I	: size
I	: border color
I	: background color
I	: opacity 0 to 100

Returns

AlphaBitmap : AlphaBitmap for using as layer

G2DsetLayer()

G2DsetLayer	(	chan	,
		alphabmp	,
		w	,
		h	,
		border	,
		bcolor	,
		color	,
		opacity
	)

Modify an AlphaBitmap with border, backcolor and opacity.

Prototype: fun [Chn AlphaBitmap I I I I I I] AlphaBitmap

Parameters

Chn	: channel
AlphaBitmap	: alpha bitmap to modify
I	: width
I	: height
I	: size
I	: border color
I	: background color
I	: opacity 0 to 100

Returns

AlphaBitmap : AlphaBitmap for using as layer