Image (gb.qt4)

This class implements an image.

The image contents are stored in the process memory, not in the display server like a Picture.

To get or set individual pixel values, you can treat the Image class as a two-dimensional array: Image[x,y] would refer to the pixel at position (x, y) within the image.

Premultiplied	This constants represents an image whose pixels are encoded in premultiplied ARGB format.
Standard	This constants represent an image whose pixels are encoded in ARGB format.

Debug

Return or set if debugging mode is enabled.

Static methods

FromString	Create an image from the contents of a string.
Load	Loads an image from a file.

Properties

Picture

Converts the image into a picture, and returns it.

Data	Returns a pointer to the image data.
Depth	Returns the depth of the image.
Format	Return the internal image format as a string.
H	A synonymous for the Height property.
Height	Returns the height of the image.
Pixels	Return a copy the image pixels colors as an array of 32 bits integers.
W	A synonymous for the Width property.
Width	Returns the width of the image.

Methods

PaintImage	Blend the Image image inside the current image.
Rotate	Returns a rotated copy of the image.
Save	Saves the image to a file. The file extension of Path will give the format of the saved image.
Stretch	Returns a stretched copy of the image.
ToString	Save an image as a string.

BeginBalance	Start a global image balance.
Brightness	Adjust the image brightness.
Clear	Clears the image.
Colorize	Colorizes the image contents by using the specified color.
Contrast	Adjust the image contrast.
Copy	Returns a copy of the image, or a copy of a part of it
Desaturate	Desaturate an image, i.e. convert it to grayscale.
DrawAlpha	Copy the alpha channel of Image into the current image.
DrawImage	Copy the Image image inside the current image.
EndBalance	End a global image balance.
Erase	Create an alpha channel into the image by erasing the specified color.
Fill	Fills the image with a specified color.
FillRect	Fill the specified rectangle with the specified color.
Fuzzy	Blur an image and return itself.
Gamma	Adjust the image gamma.
Gray	Convert an image to grayscale.
Hue	Adjust the image hue.
Invert	Invert an image and return it.
Lightness	Adjust the image lightness.
Mask	Multiply each color component of each pixel by the color component of the specified color.
Mirror	Returns the image vertically and/or horizontally mirrored.
Opacity	Change the opacity of an image and return it.
PaintRect	Blend the specified rectangle with the specified color.
Replace	Replaces a color by another one.
Resize	Resizes the image.
RotateLeft	Rotate an image 90° left, and return it.
RotateRight	Rotate an image 90° right, and return it.
Saturation	Adjust the image saturation.
Transparent	Make the image transparent by using the specified Color.