1 #define __INKSCAPE_CTRLQUADR_C__
3 /*
4 * Quadrilateral
5 *
6 * Authors:
7 * bulia byak
8 *
9 * Copyright (C) 2005 authors
10 *
11 * Released under GNU GPL
12 */
14 #include "display-forward.h"
15 #include "sp-canvas-util.h"
16 #include "sp-ctrlquadr.h"
18 #ifdef HAVE_CONFIG_H
19 # include "config.h"
20 #endif
21 #include <livarot/Shape.h>
22 #include <livarot/Path.h>
24 struct SPCtrlQuadr : public SPCanvasItem{
25 guint32 rgba;
26 NR::Point p1, p2, p3, p4;
27 Shape* shp;
28 };
30 struct SPCtrlQuadrClass : public SPCanvasItemClass{};
32 static void sp_ctrlquadr_class_init (SPCtrlQuadrClass *klass);
33 static void sp_ctrlquadr_init (SPCtrlQuadr *ctrlquadr);
34 static void sp_ctrlquadr_destroy (GtkObject *object);
36 static void sp_ctrlquadr_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags);
37 static void sp_ctrlquadr_render (SPCanvasItem *item, SPCanvasBuf *buf);
39 static SPCanvasItemClass *parent_class;
41 GtkType
42 sp_ctrlquadr_get_type (void)
43 {
44 static GtkType type = 0;
46 if (!type) {
47 GtkTypeInfo info = {
48 "SPCtrlQuadr",
49 sizeof (SPCtrlQuadr),
50 sizeof (SPCtrlQuadrClass),
51 (GtkClassInitFunc) sp_ctrlquadr_class_init,
52 (GtkObjectInitFunc) sp_ctrlquadr_init,
53 NULL, NULL, NULL
54 };
55 type = gtk_type_unique (SP_TYPE_CANVAS_ITEM, &info);
56 }
57 return type;
58 }
60 static void
61 sp_ctrlquadr_class_init (SPCtrlQuadrClass *klass)
62 {
63 GtkObjectClass *object_class = (GtkObjectClass *) klass;
64 SPCanvasItemClass *item_class = (SPCanvasItemClass *) klass;
66 parent_class = (SPCanvasItemClass*)gtk_type_class (SP_TYPE_CANVAS_ITEM);
68 object_class->destroy = sp_ctrlquadr_destroy;
70 item_class->update = sp_ctrlquadr_update;
71 item_class->render = sp_ctrlquadr_render;
72 }
74 static void
75 sp_ctrlquadr_init (SPCtrlQuadr *ctrlquadr)
76 {
77 ctrlquadr->rgba = 0x000000ff;
78 ctrlquadr->p1 = NR::Point(0, 0);
79 ctrlquadr->p2 = NR::Point(0, 0);
80 ctrlquadr->p3 = NR::Point(0, 0);
81 ctrlquadr->p4 = NR::Point(0, 0);
82 ctrlquadr->shp=NULL;
83 }
85 static void
86 sp_ctrlquadr_destroy (GtkObject *object)
87 {
88 g_return_if_fail (object != NULL);
89 g_return_if_fail (SP_IS_CTRLQUADR (object));
91 SPCtrlQuadr *ctrlquadr = SP_CTRLQUADR (object);
93 if (ctrlquadr->shp) {
94 delete ctrlquadr->shp;
95 ctrlquadr->shp = NULL;
96 }
98 if (GTK_OBJECT_CLASS (parent_class)->destroy)
99 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
100 }
102 static void
103 sp_ctrlquadr_render (SPCanvasItem *item, SPCanvasBuf *buf)
104 {
105 SPCtrlQuadr *ctrlquadr = SP_CTRLQUADR (item);
107 NRRectL area;
108 area.x0=buf->rect.x0;
109 area.x1=buf->rect.x1;
110 area.y0=buf->rect.y0;
111 area.y1=buf->rect.y1;
113 if (ctrlquadr->shp) {
114 sp_canvas_prepare_buffer (buf);
115 nr_pixblock_render_ctrl_rgba (ctrlquadr->shp,ctrlquadr->rgba,area,(char*)buf->buf, buf->buf_rowstride);
116 }
117 }
119 static void
120 sp_ctrlquadr_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags)
121 {
122 NRRect dbox;
124 SPCtrlQuadr *cl = SP_CTRLQUADR (item);
126 sp_canvas_request_redraw (item->canvas, (int)item->x1, (int)item->y1, (int)item->x2, (int)item->y2);
128 if (parent_class->update)
129 (* parent_class->update) (item, affine, flags);
131 sp_canvas_item_reset_bounds (item);
133 dbox.x0=dbox.x1=dbox.y0=dbox.y1=0;
134 if (cl->shp) {
135 delete cl->shp;
136 cl->shp = NULL;
137 }
138 Path* thePath = new Path;
139 thePath->MoveTo(cl->p1 * affine);
140 thePath->LineTo(cl->p2 * affine);
141 thePath->LineTo(cl->p3 * affine);
142 thePath->LineTo(cl->p4 * affine);
143 thePath->LineTo(cl->p1 * affine);
145 thePath->Convert(1.0);
147 if ( cl->shp == NULL ) cl->shp=new Shape;
148 thePath->Fill(cl->shp, 0);
150 cl->shp->CalcBBox();
151 if ( cl->shp->leftX < cl->shp->rightX ) {
152 if ( dbox.x0 >= dbox.x1 ) {
153 dbox.x0=cl->shp->leftX;dbox.x1=cl->shp->rightX;
154 dbox.y0=cl->shp->topY;dbox.y1=cl->shp->bottomY;
155 } else {
156 if ( cl->shp->leftX < dbox.x0 ) dbox.x0=cl->shp->leftX;
157 if ( cl->shp->rightX > dbox.x1 ) dbox.x1=cl->shp->rightX;
158 if ( cl->shp->topY < dbox.y0 ) dbox.y0=cl->shp->topY;
159 if ( cl->shp->bottomY > dbox.y1 ) dbox.y1=cl->shp->bottomY;
160 }
161 }
162 delete thePath;
164 item->x1 = (int)dbox.x0;
165 item->y1 = (int)dbox.y0;
166 item->x2 = (int)dbox.x1;
167 item->y2 = (int)dbox.y1;
169 sp_canvas_request_redraw (item->canvas, (int)item->x1, (int)item->y1, (int)item->x2, (int)item->y2);
170 }
172 void
173 sp_ctrlquadr_set_rgba32 (SPCtrlQuadr *cl, guint32 rgba)
174 {
175 g_return_if_fail (cl != NULL);
176 g_return_if_fail (SP_IS_CTRLQUADR (cl));
178 if (rgba != cl->rgba) {
179 SPCanvasItem *item;
180 cl->rgba = rgba;
181 item = SP_CANVAS_ITEM (cl);
182 sp_canvas_request_redraw (item->canvas, (int)item->x1, (int)item->y1, (int)item->x2, (int)item->y2);
183 }
184 }
186 void
187 sp_ctrlquadr_set_coords (SPCtrlQuadr *cl, NR::Point p1, NR::Point p2, NR::Point p3, NR::Point p4)
188 {
189 g_return_if_fail (cl != NULL);
190 g_return_if_fail (SP_IS_CTRLQUADR (cl));
192 if (p1 != cl->p1 || p2 != cl->p2 || p3 != cl->p3 || p4 != cl->p4) {
193 cl->p1 = p1;
194 cl->p2 = p2;
195 cl->p3 = p3;
196 cl->p4 = p4;
197 sp_canvas_item_request_update (SP_CANVAS_ITEM (cl));
198 }
199 }
201 /*
202 Local Variables:
203 mode:c++
204 c-file-style:"stroustrup"
205 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
206 indent-tabs-mode:nil
207 fill-column:99
208 End:
209 */
210 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :