/** * gdk_pixbuf_composite_color: * @src: a #GdkPixbuf * @dest: the #GdkPixbuf into which to render the results * @dest_x: the left coordinate for region to render * @dest_y: the top coordinate for region to render * @dest_width: the width of the region to render * @dest_height: the height of the region to render * @offset_x: the offset in the X direction (currently rounded to an integer) * @offset_y: the offset in the Y direction (currently rounded to an integer) * @scale_x: the scale factor in the X direction * @scale_y: the scale factor in the Y direction * @interp_type: the interpolation type for the transformation. * @overall_alpha: overall alpha for source image (0..255) * @check_x: the X offset for the checkboard (origin of checkboard is at -@check_x, -@check_y) * @check_y: the Y offset for the checkboard * @check_size: the size of checks in the checkboard (must be a power of two) * @color1: the color of check at upper left * @color2: the color of the other check * * Creates a transformation of the source image @src by scaling by * @scale_x and @scale_y then translating by @offset_x and @offset_y, * then composites the rectangle (@dest_x ,@dest_y, @dest_width, * @dest_height) of the resulting image with a checkboard of the * colors @color1 and @color2 and renders it onto the destination * image. * * See gdk_pixbuf_composite_color_simple() for a simpler variant of this * function suitable for many tasks. * **/ void gdk_pixbuf_composite_color (const GdkPixbuf *src, GdkPixbuf *dest, int dest_x, int dest_y, int dest_width, int dest_height, double offset_x, double offset_y, double scale_x, double scale_y, GdkInterpType interp_type, int overall_alpha, int check_x, int check_y, int check_size, guint32 color1, guint32 color2) { const guint8 *src_pixels; guint8 *dest_pixels; g_return_if_fail (GDK_IS_PIXBUF (src)); g_return_if_fail (GDK_IS_PIXBUF (dest)); g_return_if_fail (dest_x >= 0 && dest_x + dest_width <= dest->width); g_return_if_fail (dest_y >= 0 && dest_y + dest_height <= dest->height); g_return_if_fail (overall_alpha >= 0 && overall_alpha <= 255); offset_x = floor (offset_x + 0.5); offset_y = floor (offset_y + 0.5); /* Force an implicit copy */ dest_pixels = gdk_pixbuf_get_pixels (dest); src_pixels = gdk_pixbuf_read_pixels (src); _pixops_composite_color (dest_pixels, dest_width, dest_height, dest->rowstride, dest->n_channels, dest->has_alpha, src_pixels, src->width, src->height, src->rowstride, src->n_channels, src->has_alpha, dest_x, dest_y, dest_width, dest_height, offset_x, offset_y, scale_x, scale_y, (PixopsInterpType)interp_type, overall_alpha, check_x, check_y, check_size, color1, color2); }
/** * gdk_pixbuf_composite_color: * @src: a #GdkPixbuf * @dest: the #GdkPixbuf into which to render the results * @dest_x: the left coordinate for region to render * @dest_y: the top coordinate for region to render * @dest_width: the width of the region to render * @dest_height: the height of the region to render * @offset_x: the offset in the X direction (currently rounded to an integer) * @offset_y: the offset in the Y direction (currently rounded to an integer) * @scale_x: the scale factor in the X direction * @scale_y: the scale factor in the Y direction * @interp_type: the interpolation type for the transformation. * @overall_alpha: overall alpha for source image (0..255) * @check_x: the X offset for the checkboard (origin of checkboard is at -@check_x, -@check_y) * @check_y: the Y offset for the checkboard * @check_size: the size of checks in the checkboard (must be a power of two) * @color1: the color of check at upper left * @color2: the color of the other check * * Creates a transformation of the source image @src by scaling by * @scale_x and @scale_y then translating by @offset_x and @offset_y, * then composites the rectangle (@dest_x ,@dest_y, @dest_width, * @dest_height) of the resulting image with a checkboard of the * colors @color1 and @color2 and renders it onto the destination * image. * * See gdk_pixbuf_composite_color_simple() for a simpler variant of this * function suitable for many tasks. * **/ void gdk_pixbuf_composite_color (const GdkPixbuf *src, GdkPixbuf *dest, int dest_x, int dest_y, int dest_width, int dest_height, double offset_x, double offset_y, double scale_x, double scale_y, GdkInterpType interp_type, int overall_alpha, int check_x, int check_y, int check_size, guint32 color1, guint32 color2) { g_return_if_fail (src != NULL); g_return_if_fail (dest != NULL); g_return_if_fail (dest_x >= 0 && dest_x + dest_width <= dest->width); g_return_if_fail (dest_y >= 0 && dest_y + dest_height <= dest->height); g_return_if_fail (overall_alpha >= 0 && overall_alpha <= 255); offset_x = floor (offset_x + 0.5); offset_y = floor (offset_y + 0.5); _pixops_composite_color (dest->pixels, dest_width, dest_height, dest->rowstride, dest->n_channels, dest->has_alpha, src->pixels, src->width, src->height, src->rowstride, src->n_channels, src->has_alpha, dest_x, dest_y, dest_width, dest_height, offset_x, offset_y, scale_x, scale_y, (PixopsInterpType)interp_type, overall_alpha, check_x, check_y, check_size, color1, color2); }