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#define __INKSCAPE_CTRLLINE_C__
/*
* Simple straight line
*
* Author:
* Lauris Kaplinski <lauris@kaplinski.com>
*
* Copyright (C) 1999-2002 Lauris Kaplinski
*
* Released under GNU GPL
*/
/*
* TODO:
* Draw it by hand - we really do not need aa stuff for it
*
*/
#include "display-forward.h"
#include "sp-canvas-util.h"
#include "sp-ctrlline.h"
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <livarot/Shape.h>
#include <livarot/Path.h>
struct SPCtrlLine : public SPCanvasItem{
guint32 rgba;
NRPoint s, e;
Shape* shp;
};
struct SPCtrlLineClass : public SPCanvasItemClass{};
static void sp_ctrlline_class_init (SPCtrlLineClass *klass);
static void sp_ctrlline_init (SPCtrlLine *ctrlline);
static void sp_ctrlline_destroy (GtkObject *object);
static void sp_ctrlline_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags);
static void sp_ctrlline_render (SPCanvasItem *item, SPCanvasBuf *buf);
static SPCanvasItemClass *parent_class;
GtkType
sp_ctrlline_get_type (void)
{
static GtkType type = 0;
if (!type) {
GtkTypeInfo info = {
"SPCtrlLine",
sizeof (SPCtrlLine),
sizeof (SPCtrlLineClass),
(GtkClassInitFunc) sp_ctrlline_class_init,
(GtkObjectInitFunc) sp_ctrlline_init,
NULL, NULL, NULL
};
type = gtk_type_unique (SP_TYPE_CANVAS_ITEM, &info);
}
return type;
}
static void
sp_ctrlline_class_init (SPCtrlLineClass *klass)
{
GtkObjectClass *object_class = (GtkObjectClass *) klass;
SPCanvasItemClass *item_class = (SPCanvasItemClass *) klass;
parent_class = (SPCanvasItemClass*)gtk_type_class (SP_TYPE_CANVAS_ITEM);
object_class->destroy = sp_ctrlline_destroy;
item_class->update = sp_ctrlline_update;
item_class->render = sp_ctrlline_render;
}
static void
sp_ctrlline_init (SPCtrlLine *ctrlline)
{
ctrlline->rgba = 0x0000ff7f;
ctrlline->s.x = ctrlline->s.y = ctrlline->e.x = ctrlline->e.y = 0.0;
ctrlline->shp=NULL;
}
static void
sp_ctrlline_destroy (GtkObject *object)
{
g_return_if_fail (object != NULL);
g_return_if_fail (SP_IS_CTRLLINE (object));
SPCtrlLine *ctrlline = SP_CTRLLINE (object);
if (ctrlline->shp) {
delete ctrlline->shp;
ctrlline->shp = NULL;
}
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
sp_ctrlline_render (SPCanvasItem *item, SPCanvasBuf *buf)
{
SPCtrlLine *ctrlline = SP_CTRLLINE (item);
NRRectL area;
area.x0=buf->rect.x0;
area.x1=buf->rect.x1;
area.y0=buf->rect.y0;
area.y1=buf->rect.y1;
if (ctrlline->shp) {
sp_canvas_prepare_buffer (buf);
nr_pixblock_render_ctrl_rgba (ctrlline->shp,ctrlline->rgba,area,(char*)buf->buf, buf->buf_rowstride);
}
}
static void
sp_ctrlline_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags)
{
NRRect dbox;
SPCtrlLine *cl = SP_CTRLLINE (item);
sp_canvas_request_redraw (item->canvas, (int)item->x1, (int)item->y1, (int)item->x2, (int)item->y2);
if (parent_class->update)
(* parent_class->update) (item, affine, flags);
sp_canvas_item_reset_bounds (item);
dbox.x0=dbox.x1=dbox.y0=dbox.y1=0;
if (cl->shp) {
delete cl->shp;
cl->shp = NULL;
}
Path* thePath = new Path;
thePath->MoveTo(NR::Point(cl->s.x, cl->s.y) * affine);
thePath->LineTo(NR::Point(cl->e.x, cl->e.y) * affine);
thePath->Convert(1.0);
if ( cl->shp == NULL ) cl->shp=new Shape;
thePath->Stroke(cl->shp,false,0.5,join_straight,butt_straight,20.0,false);
cl->shp->CalcBBox();
if ( cl->shp->leftX < cl->shp->rightX ) {
if ( dbox.x0 >= dbox.x1 ) {
dbox.x0=cl->shp->leftX;dbox.x1=cl->shp->rightX;
dbox.y0=cl->shp->topY;dbox.y1=cl->shp->bottomY;
} else {
if ( cl->shp->leftX < dbox.x0 ) dbox.x0=cl->shp->leftX;
if ( cl->shp->rightX > dbox.x1 ) dbox.x1=cl->shp->rightX;
if ( cl->shp->topY < dbox.y0 ) dbox.y0=cl->shp->topY;
if ( cl->shp->bottomY > dbox.y1 ) dbox.y1=cl->shp->bottomY;
}
}
delete thePath;
item->x1 = (int)dbox.x0;
item->y1 = (int)dbox.y0;
item->x2 = (int)dbox.x1;
item->y2 = (int)dbox.y1;
sp_canvas_request_redraw (item->canvas, (int)item->x1, (int)item->y1, (int)item->x2, (int)item->y2);
}
void
sp_ctrlline_set_rgba32 (SPCtrlLine *cl, guint32 rgba)
{
g_return_if_fail (cl != NULL);
g_return_if_fail (SP_IS_CTRLLINE (cl));
if (rgba != cl->rgba) {
SPCanvasItem *item;
cl->rgba = rgba;
item = SP_CANVAS_ITEM (cl);
sp_canvas_request_redraw (item->canvas, (int)item->x1, (int)item->y1, (int)item->x2, (int)item->y2);
}
}
#define EPSILON 1e-6
#define DIFFER(a,b) (fabs ((a) - (b)) > EPSILON)
void
sp_ctrlline_set_coords (SPCtrlLine *cl, gdouble x0, gdouble y0, gdouble x1, gdouble y1)
{
g_return_if_fail (cl != NULL);
g_return_if_fail (SP_IS_CTRLLINE (cl));
if (DIFFER (x0, cl->s.x) || DIFFER (y0, cl->s.y) || DIFFER (x1, cl->e.x) || DIFFER (y1, cl->e.y)) {
cl->s.x = x0;
cl->s.y = y0;
cl->e.x = x1;
cl->e.y = y1;
sp_canvas_item_request_update (SP_CANVAS_ITEM (cl));
}
}
void
sp_ctrlline_set_coords (SPCtrlLine *cl, const NR::Point start, const NR::Point end)
{
sp_ctrlline_set_coords(cl, start[0], start[1], end[0], end[1]);
}
/*
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 :
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