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Struct Pango.Matrix

Import line:	Pango = imports.gi.Pango;
GIR File:	Pango-1.0.gir
C documentation:	Pango.Matrix
Struct :	Matrix
	Show / Hide Inherited methods, properties and signals

A structure specifying a transformation between user-space coordinates and device coordinates. The transformation is given by x_device = x_user * matrix->xx + y_user * matrix->xy + matrix->x0; y_device = x_user * matrix->yx + y_user * matrix->yy + matrix->y0;

Properties
Properties		Defined By
	x0 : Number	Pango.Matrix
	xx : Number	Pango.Matrix
	xy : Number	Pango.Matrix
	y0 : Number	Pango.Matrix
	yx : Number	Pango.Matrix
	yy : Number	Pango.Matrix

Methods / Constructors
Method / Constructor		Defined By
	new Pango.Matrix () Create a new Pango.Matrix Create a new Pango.Matrix
	concat (Matrix *new_matrix) : none Changes the transformation represented by matrix* to be the transformation given by first applying transformation given by new_matrix then applying the original transformation. Changes the transformation represented by matrix to be the transformation given by first applying transformation given by new_matrix then applying the original transformation. Parameters: Pango.Matrix new_matrix Required (not null) Returns: none	Pango.Matrix
	copy () : Pango.Matrix Copies a PangoMatrix. Copies a PangoMatrix. be freed with pango_matrix_free(), or NULL if Returns: Pango.Matrix	Pango.Matrix
	free () : none Free a PangoMatrix created with pango_matrix_copy(). Free a PangoMatrix created with pango_matrix_copy(). Returns: none	Pango.Matrix
	get_font_scale_factor () : Number Returns the scale factor of a matrix on the height of the font. Returns the scale factor of a matrix on the height of the font. That is, the scale factor in the direction perpendicular to the vector that the X coordinate is mapped to. or 1.0 if matrix is NULL. Returns: Number	Pango.Matrix
	rotate (Number *degrees) : none Changes the transformation represented by matrix* to be the transformation given by first rotating by degrees degrees counter-clockwise then applying the original transformation. Changes the transformation represented by matrix to be the transformation given by first rotating by degrees degrees counter-clockwise then applying the original transformation. Parameters: Number degrees Required (not null) Returns: none	Pango.Matrix
	scale (Number *scale_x, Number scale_y) : none Changes the transformation represented by matrix* to be the transformation given by first scaling by sx in the X direction and sy in the Y direction then applying the original transformation. Changes the transformation represented by matrix to be the transformation given by first scaling by sx in the X direction and sy in the Y direction then applying the original transformation. Parameters: Number scale_x Required (not null) Number scale_y Required (not null) Returns: none	Pango.Matrix
	transform_distance () : Object Transforms the distance vector (dx,dy) by matrix. Transforms the distance vector (dx,dy) by matrix. This is similar to pango_matrix_transform_point() except that the translation components of the transformation are ignored. The calculation of the returned vector is as follows: dx2 = dx1 * xx + dy1 * xy; dy2 = dx1 * yx + dy1 * yy; Affine transformations are position invariant, so the same vector always transforms to the same vector. If (x1,y1) transforms to (x2,y2) then (x1+dx1,y1+dy1) will transform to (x1+dx2,y1+dy2) for all values of x1 and x2. Returns: dx: Number dy: Number	Pango.Matrix
	transform_pixel_rectangle (Rectangle *rect) : none First transforms the rect* using matrix, then calculates the bounding box of the transformed rectangle. First transforms the rect using matrix, then calculates the bounding box of the transformed rectangle. The rectangle should be in device units (pixels). This function is useful for example when you want to draw a rotated should be and how much you should shift the layout when rendering. For better accuracy, you should use pango_matrix_transform_rectangle() on original rectangle in Pango units and convert to pixels afterward using pango_extents_to_pixels()'s first argument. Parameters: Pango.Rectangle rect Required (not null) Returns: none	Pango.Matrix
	transform_point () : Object Transforms the point (x, y) by matrix. Transforms the point (x, y) by matrix. Returns: x: Number y: Number	Pango.Matrix
	transform_rectangle (Rectangle *rect) : none First transforms rect* using matrix, then calculates the bounding box of the transformed rectangle. First transforms rect using matrix, then calculates the bounding box of the transformed rectangle. The rectangle should be in Pango units. This function is useful for example when you want to draw a rotated should be and how much you should shift the layout when rendering. If you have a rectangle in device units (pixels), use pango_matrix_transform_pixel_rectangle(). If you have the rectangle in Pango units and want to convert to transformed pixel bounding box, it is more accurate to transform it first (using this function) and pass the result to pango_extents_to_pixels(), first argument, for an inclusive rounded rectangle. However, there are valid reasons that you may want to convert to pixels first and then transform, for example when the transformed coordinates may overflow in Pango units (large matrix translation for example). Parameters: Pango.Rectangle rect Required (not null) Returns: none	Pango.Matrix
	translate (Number tx, Number ty) : none Changes the transformation represented by matrix to be the transformation given by first translating by (tx, ty) then applying the original transformation. Changes the transformation represented by matrix to be the transformation given by first translating by (tx, ty) then applying the original transformation. Parameters: Number tx Required (not null) Number ty Required (not null) Returns: none	Pango.Matrix

Events
None

Used by These Methods / Signals / Properties
Class / Namespace	Method / Signal / Properties
Gdk Method	Gdk.draw_glyphs_transformed (Drawable *drawable, GC gc, Matrix matrix, Font font, Number x, Number y, GlyphString glyphs) : none Renders a PangoGlyphString* onto a drawable, possibly transforming the layed-out coordinates through a transformation matrix.
Pango Method	Pango.gravity_get_for_matrix (Matrix *matrix) : Pango.Gravity Finds the gravity that best matches the rotation component in a PangoMatrix*.
Pango.Context Method	set_matrix (Matrix *matrix*) : none Sets the transformation matrix that will be applied when rendering with this context.
Pango.Context Method	get_matrix () : Pango.Matrix Gets the transformation matrix that will be applied when rendering with this context.
Pango.Renderer Method	set_matrix (Matrix *matrix*) : none Sets the transformation matrix that will be applied when rendering.
Pango.Renderer Method	get_matrix () : Pango.Matrix Gets the transformation matrix that will be applied when rendering.
PangoFT2 Method	PangoFT2.render_transformed (Bitmap *bitmap, Matrix matrix, Font font, GlyphString glyphs*, Number x, Number y) : none
PangoXft Method	PangoXft.render_transformed (Draw *draw, Color color, Matrix matrix, Font font, GlyphString glyphs, Number x, Number y) : none Renders a PangoGlyphString* onto a XftDraw, possibly transforming the layed-out coordinates through a transformation matrix.