3 #include <libgnomecanvas/libgnomecanvas.h>
5 #include "canvas-simpleline.h"
6 #include "rgb_macros.h"
17 static void gnome_canvas_simpleline_class_init (GnomeCanvasSimpleLineClass *class);
18 static void gnome_canvas_simpleline_init (GnomeCanvasSimpleLine *simpleline);
19 static void gnome_canvas_simpleline_set_arg (GtkObject *object,
22 static void gnome_canvas_simpleline_get_arg (GtkObject *object,
26 static void gnome_canvas_simpleline_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags);
27 static void gnome_canvas_simpleline_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2);
28 static double gnome_canvas_simpleline_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item);
29 static void gnome_canvas_simpleline_render (GnomeCanvasItem *item, GnomeCanvasBuf *buf);
30 static void gnome_canvas_simpleline_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x, int y, int w, int h);
32 static GnomeCanvasItemClass *parent_class;
36 gnome_canvas_simpleline_get_type (void)
38 static GtkType simpleline_type = 0;
40 if (!simpleline_type) {
41 GtkTypeInfo simpleline_info = {
42 "GnomeCanvasSimpleLine",
43 sizeof (GnomeCanvasSimpleLine),
44 sizeof (GnomeCanvasSimpleLineClass),
45 (GtkClassInitFunc) gnome_canvas_simpleline_class_init,
46 (GtkObjectInitFunc) gnome_canvas_simpleline_init,
47 NULL, /* reserved_1 */
48 NULL, /* reserved_2 */
49 (GtkClassInitFunc) NULL
52 simpleline_type = gtk_type_unique (gnome_canvas_item_get_type (), &simpleline_info);
55 return simpleline_type;
59 gnome_canvas_simpleline_class_init (GnomeCanvasSimpleLineClass *class)
61 GtkObjectClass *object_class;
62 GnomeCanvasItemClass *item_class;
64 object_class = (GtkObjectClass *) class;
65 item_class = (GnomeCanvasItemClass *) class;
67 parent_class = gtk_type_class (gnome_canvas_item_get_type ());
69 gtk_object_add_arg_type ("GnomeCanvasSimpleLine::x1", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_X1);
70 gtk_object_add_arg_type ("GnomeCanvasSimpleLine::y1", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_Y1);
71 gtk_object_add_arg_type ("GnomeCanvasSimpleLine::x2", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_X2);
72 gtk_object_add_arg_type ("GnomeCanvasSimpleLine::y2", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_Y2);
73 gtk_object_add_arg_type ("GnomeCanvasSimpleLine::color-rgba", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_COLOR_RGBA);
75 object_class->set_arg = gnome_canvas_simpleline_set_arg;
76 object_class->get_arg = gnome_canvas_simpleline_get_arg;
78 item_class->update = gnome_canvas_simpleline_update;
79 item_class->bounds = gnome_canvas_simpleline_bounds;
80 item_class->point = gnome_canvas_simpleline_point;
81 item_class->render = gnome_canvas_simpleline_render;
82 item_class->draw = gnome_canvas_simpleline_draw;
86 gnome_canvas_simpleline_init (GnomeCanvasSimpleLine *simpleline)
92 simpleline->color = RGBA_TO_UINT(98,123,174,241);
93 simpleline->horizontal = TRUE; /* reset in the _update() method */
95 // GNOME_CANVAS_ITEM(simpleline)->object.flags |= GNOME_CANVAS_ITEM_NO_AUTO_REDRAW;
99 gnome_canvas_simpleline_bounds_world (GnomeCanvasItem *item, int* ix1, int* iy1, int* ix2, int* iy2)
101 double x1, x2, y1, y2;
105 GnomeCanvasSimpleLine *simpleline = GNOME_CANVAS_SIMPLELINE(item);
107 gnome_canvas_simpleline_bounds (item, &x1, &y1, &x2, &y2);
114 gnome_canvas_item_i2w_affine (item, i2w);
115 art_affine_point (&w1, &i1, i2w);
116 art_affine_point (&w2, &i2, i2w);
118 *ix1 = (int) rint(w1.x);
119 *ix2 = (int) rint(w2.x);
120 *iy1 = (int) rint(w1.y);
121 *iy2 = (int) rint(w2.y);
123 /* the update rect has to be of non-zero width and height */
126 simpleline->horizontal = FALSE;
129 simpleline->horizontal = TRUE;
135 gnome_canvas_simpleline_reset_bounds (GnomeCanvasItem *item)
137 int Ix1, Ix2, Iy1, Iy2;
139 gnome_canvas_simpleline_bounds_world (item, &Ix1, &Iy1, &Ix2, &Iy2);
140 gnome_canvas_update_bbox (item, Ix1, Iy1, Ix2, Iy2);
148 gnome_canvas_simpleline_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
150 GnomeCanvasItem *item;
151 GnomeCanvasSimpleLine *simpleline;
155 item = GNOME_CANVAS_ITEM (object);
156 simpleline = GNOME_CANVAS_SIMPLELINE (object);
163 if (simpleline->x1 != GTK_VALUE_DOUBLE (*arg)) {
164 simpleline->x1 = GTK_VALUE_DOUBLE (*arg);
170 if (simpleline->y1 != GTK_VALUE_DOUBLE (*arg)) {
171 simpleline->y1 = GTK_VALUE_DOUBLE (*arg);
177 if (simpleline->x2 != GTK_VALUE_DOUBLE (*arg)) {
178 simpleline->x2 = GTK_VALUE_DOUBLE (*arg);
184 if (simpleline->y2 != GTK_VALUE_DOUBLE (*arg)) {
185 simpleline->y2 = GTK_VALUE_DOUBLE (*arg);
191 if (simpleline->color != GTK_VALUE_INT(*arg)) {
192 simpleline->color = GTK_VALUE_INT(*arg);
193 UINT_TO_RGBA (simpleline->color, &simpleline->r, &simpleline->g, &simpleline->b, &simpleline->a);
204 gnome_canvas_item_request_update (item);
208 int Ix1, Ix2, Iy1, Iy2;
209 gnome_canvas_simpleline_bounds_world (item, &Ix1, &Iy1, &Ix2, &Iy2);
210 gnome_canvas_request_redraw (item->canvas, Ix1, Iy1, Ix2, Iy2);
215 gnome_canvas_simpleline_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
217 GnomeCanvasSimpleLine *simpleline;
219 simpleline = GNOME_CANVAS_SIMPLELINE (object);
223 GTK_VALUE_DOUBLE (*arg) = simpleline->x1;
226 GTK_VALUE_DOUBLE (*arg) = simpleline->y1;
229 GTK_VALUE_DOUBLE (*arg) = simpleline->x2;
232 GTK_VALUE_DOUBLE (*arg) = simpleline->y2;
235 GTK_VALUE_INT (*arg) = simpleline->color;
238 arg->type = GTK_TYPE_INVALID;
244 gnome_canvas_simpleline_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
246 GnomeCanvasSimpleLine *simpleline;
250 simpleline = GNOME_CANVAS_SIMPLELINE (item);
252 if (parent_class->update)
253 (* parent_class->update) (item, affine, clip_path, flags);
255 gnome_canvas_simpleline_reset_bounds (item);
260 gnome_canvas_item_i2w (item, &x, &y);
261 gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x, y, &simpleline->bbox_ulx, &simpleline->bbox_uly);
266 gnome_canvas_item_i2w (item, &x, &y);
267 gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x, y, &simpleline->bbox_lrx, &simpleline->bbox_lry);
271 gnome_canvas_simpleline_render (GnomeCanvasItem *item,
274 GnomeCanvasSimpleLine *simpleline;
277 simpleline = GNOME_CANVAS_SIMPLELINE (item);
279 if (parent_class->render) {
280 (*parent_class->render) (item, buf);
284 gnome_canvas_buf_ensure_buf (buf);
288 // begin = MAX(simpleline->bbox_ulx,buf->rect.x0);
289 // end = MIN(simpleline->bbox_lrx,buf->rect.x1);
291 begin = simpleline->bbox_ulx;
292 end = simpleline->bbox_lrx;
294 if (simpleline->color != 0) {
295 if (simpleline->horizontal) {
296 PAINT_HORIZA(buf, simpleline->r, simpleline->g, simpleline->b, simpleline->a,
297 begin, end, simpleline->bbox_uly);
299 PAINT_VERTA(buf, simpleline->r, simpleline->g, simpleline->b, simpleline->a,
300 begin, simpleline->bbox_uly, simpleline->bbox_lry);
306 gnome_canvas_simpleline_draw (GnomeCanvasItem *item,
307 GdkDrawable *drawable,
309 int width, int height)
311 GnomeCanvasSimpleLine *simpleline;
313 simpleline = GNOME_CANVAS_SIMPLELINE (item);
315 if (parent_class->draw) {
316 (* parent_class->draw) (item, drawable, x, y, width, height);
319 fprintf (stderr, "please don't use the CanvasSimpleLine item in a non-aa Canvas\n");
324 gnome_canvas_simpleline_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2)
326 GnomeCanvasSimpleLine *simpleline = GNOME_CANVAS_SIMPLELINE (item);
328 *x1 = simpleline->x1;
329 *y1 = simpleline->y1;
330 *x2 = simpleline->x2;
331 *y2 = simpleline->y2;
335 gnome_canvas_simpleline_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item)
337 GnomeCanvasSimpleLine *simpleline;
338 double x1, y1, x2, y2;
341 simpleline = GNOME_CANVAS_SIMPLELINE (item);
345 /* Find the bounds for the rectangle plus its outline width */
347 gnome_canvas_simpleline_bounds (item, &x1, &y1, &x2, &y2);
349 /* Is point inside rectangle */
351 if ((x >= x1) && (y >= y1) && (x <= x2) && (y <= y2)) {
355 /* Point is outside rectangle */
371 return sqrt (dx * dx + dy * dy);