gradient-chemistry.h revision 3ab2e2a466950b0c85907a4dd2b976a862a3e05b
#ifndef __SP_GRADIENT_CHEMISTRY_H__
#define __SP_GRADIENT_CHEMISTRY_H__
/*
* Various utility methods for gradients
*
* Author:
* Lauris Kaplinski <lauris@kaplinski.com>
* bulia byak <buliabyak@users.sf.net>
* Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
*
* Copyright (C) 2007 Johan Engelen
* Copyright (C) 2001-2002 Lauris Kaplinski
* Copyright (C) 2001 Ximian, Inc.
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "forward.h"
#include "sp-gradient.h"
/*
* Either normalizes given gradient to vector, or returns fresh normalized
* vector - in latter case, original gradient is flattened and stops cleared
* No transrefing - i.e. caller shouldn't hold reference to original and
* does not get one to new automatically (doc holds ref of every object anyways)
*/
SPGradient *sp_gradient_ensure_vector_normalized (SPGradient *gradient);
/*
* Sets item fill/stroke to lineargradient with given vector, creating
* new private gradient, if needed
* gr has to be normalized vector
*/
SPGradient *sp_item_set_gradient (SPItem *item, SPGradient *gr, SPGradientType type, bool is_fill);
/*
* Get default normalized gradient vector of document, create if there is none
*/
SPGradient *sp_document_default_gradient_vector (SPDocument *document, guint32 color = 0);
SPGradient *sp_gradient_vector_for_object (SPDocument *doc, SPDesktop *desktop, SPObject *o, bool is_fill);
void sp_object_ensure_fill_gradient_normalized (SPObject *object);
void sp_object_ensure_stroke_gradient_normalized (SPObject *object);
SPGradient *sp_gradient_convert_to_userspace (SPGradient *gr, SPItem *item, const gchar *property);
SPGradient *sp_gradient_reset_to_userspace (SPGradient *gr, SPItem *item);
SPGradient *sp_gradient_fork_vector_if_necessary (SPGradient *gr);
SPGradient *sp_gradient_get_forked_vector_if_necessary(SPGradient *gradient, bool force_vector);
SPStop* sp_first_stop(SPGradient *gradient);
SPStop* sp_last_stop(SPGradient *gradient);
SPStop* sp_prev_stop(SPStop *stop, SPGradient *gradient);
SPStop* sp_next_stop(SPStop *stop);
SPStop* sp_get_stop_i(SPGradient *gradient, guint i);
guint sp_number_of_stops(SPGradient *gradient);
guint sp_number_of_stops_before_stop(SPGradient *gradient, SPStop *target);
guint32 average_color (guint32 c1, guint32 c2, gdouble p = 0.5);
SPStop *sp_vector_add_stop (SPGradient *vector, SPStop* prev_stop, SPStop* next_stop, gfloat offset);
void sp_gradient_transform_multiply (SPGradient *gradient, NR::Matrix postmul, bool set);
SPGradient * sp_item_gradient (SPItem *item, bool fill_or_stroke);
void sp_item_gradient_set_coords (SPItem *item, guint point_type, guint point_i, NR::Point p_desk, bool fill_or_stroke, bool write_repr, bool scale);
NR::Point sp_item_gradient_get_coords (SPItem *item, guint point_type, guint point_i, bool fill_or_stroke);
SPGradient *sp_item_gradient_get_vector (SPItem *item, bool fill_or_stroke);
SPGradientSpread sp_item_gradient_get_spread (SPItem *item, bool fill_or_stroke);
struct SPCSSAttr;
void sp_item_gradient_stop_set_style (SPItem *item, guint point_type, guint point_i, bool fill_or_stroke, SPCSSAttr *stop);
guint32 sp_item_gradient_stop_query_style (SPItem *item, guint point_type, guint point_i, bool fill_or_stroke);
void sp_item_gradient_edit_stop (SPItem *item, guint point_type, guint point_i, bool fill_or_stroke);
void sp_item_gradient_reverse_vector (SPItem *item, bool fill_or_stroke);
#endif
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :