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 */
94 GNOME_CANVAS_ITEM(simpleline)->object.flags |= GNOME_CANVAS_ITEM_NO_AUTO_REDRAW;
98 gnome_canvas_simpleline_bounds_world (GnomeCanvasItem *item, int* ix1, int* iy1, int* ix2, int* iy2)
100 double x1, x2, y1, y2;
104 GnomeCanvasSimpleLine *simpleline = GNOME_CANVAS_SIMPLELINE(item);
106 gnome_canvas_simpleline_bounds (item, &x1, &y1, &x2, &y2);
113 gnome_canvas_item_i2w_affine (item, i2w);
114 art_affine_point (&w1, &i1, i2w);
115 art_affine_point (&w2, &i2, i2w);
117 *ix1 = (int) rint(w1.x);
118 *ix2 = (int) rint(w2.x);
119 *iy1 = (int) rint(w1.y);
120 *iy2 = (int) rint(w2.y);
122 /* the update rect has to be of non-zero width and height */
125 simpleline->horizontal = FALSE;
128 simpleline->horizontal = TRUE;
134 gnome_canvas_simpleline_reset_bounds (GnomeCanvasItem *item)
136 int Ix1, Ix2, Iy1, Iy2;
138 gnome_canvas_simpleline_bounds_world (item, &Ix1, &Iy1, &Ix2, &Iy2);
139 gnome_canvas_update_bbox (item, Ix1, Iy1, Ix2, Iy2);
147 gnome_canvas_simpleline_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
149 GnomeCanvasItem *item;
150 GnomeCanvasSimpleLine *simpleline;
154 item = GNOME_CANVAS_ITEM (object);
155 simpleline = GNOME_CANVAS_SIMPLELINE (object);
162 if (simpleline->x1 != GTK_VALUE_DOUBLE (*arg)) {
163 simpleline->x1 = GTK_VALUE_DOUBLE (*arg);
169 if (simpleline->y1 != GTK_VALUE_DOUBLE (*arg)) {
170 simpleline->y1 = GTK_VALUE_DOUBLE (*arg);
176 if (simpleline->x2 != GTK_VALUE_DOUBLE (*arg)) {
177 simpleline->x2 = GTK_VALUE_DOUBLE (*arg);
183 if (simpleline->y2 != GTK_VALUE_DOUBLE (*arg)) {
184 simpleline->y2 = GTK_VALUE_DOUBLE (*arg);
190 if (simpleline->color != GTK_VALUE_INT(*arg)) {
191 simpleline->color = GTK_VALUE_INT(*arg);
192 UINT_TO_RGBA (simpleline->color, &simpleline->r, &simpleline->g, &simpleline->b, &simpleline->a);
203 gnome_canvas_item_request_update (item);
207 int Ix1, Ix2, Iy1, Iy2;
208 gnome_canvas_simpleline_bounds_world (item, &Ix1, &Iy1, &Ix2, &Iy2);
209 gnome_canvas_request_redraw (item->canvas, Ix1, Iy1, Ix2, Iy2);
214 gnome_canvas_simpleline_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
216 GnomeCanvasSimpleLine *simpleline;
218 simpleline = GNOME_CANVAS_SIMPLELINE (object);
222 GTK_VALUE_DOUBLE (*arg) = simpleline->x1;
225 GTK_VALUE_DOUBLE (*arg) = simpleline->y1;
228 GTK_VALUE_DOUBLE (*arg) = simpleline->x2;
231 GTK_VALUE_DOUBLE (*arg) = simpleline->y2;
234 GTK_VALUE_INT (*arg) = simpleline->color;
237 arg->type = GTK_TYPE_INVALID;
243 gnome_canvas_simpleline_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
245 GnomeCanvasSimpleLine *simpleline;
249 simpleline = GNOME_CANVAS_SIMPLELINE (item);
251 if (parent_class->update)
252 (* parent_class->update) (item, affine, clip_path, flags);
254 gnome_canvas_simpleline_reset_bounds (item);
259 gnome_canvas_item_i2w (item, &x, &y);
260 gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x, y, &simpleline->bbox_ulx, &simpleline->bbox_uly);
265 gnome_canvas_item_i2w (item, &x, &y);
266 gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x, y, &simpleline->bbox_lrx, &simpleline->bbox_lry);
270 gnome_canvas_simpleline_render (GnomeCanvasItem *item,
273 GnomeCanvasSimpleLine *simpleline;
276 simpleline = GNOME_CANVAS_SIMPLELINE (item);
278 if (parent_class->render) {
279 (*parent_class->render) (item, buf);
283 gnome_canvas_buf_ensure_buf (buf);
287 // begin = MAX(simpleline->bbox_ulx,buf->rect.x0);
288 // end = MIN(simpleline->bbox_lrx,buf->rect.x1);
290 begin = simpleline->bbox_ulx;
291 end = simpleline->bbox_lrx;
293 if (simpleline->color != 0) {
294 if (simpleline->horizontal) {
295 PAINT_HORIZA(buf, simpleline->r, simpleline->g, simpleline->b, simpleline->a,
296 begin, end, simpleline->bbox_uly);
298 PAINT_VERTA(buf, simpleline->r, simpleline->g, simpleline->b, simpleline->a,
299 begin, simpleline->bbox_uly, simpleline->bbox_lry);
305 gnome_canvas_simpleline_draw (GnomeCanvasItem *item,
306 GdkDrawable *drawable,
308 int width, int height)
310 GnomeCanvasSimpleLine *simpleline;
312 simpleline = GNOME_CANVAS_SIMPLELINE (item);
314 if (parent_class->draw) {
315 (* parent_class->draw) (item, drawable, x, y, width, height);
318 fprintf (stderr, "please don't use the CanvasSimpleLine item in a non-aa Canvas\n");
323 gnome_canvas_simpleline_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2)
325 GnomeCanvasSimpleLine *simpleline = GNOME_CANVAS_SIMPLELINE (item);
327 *x1 = simpleline->x1;
328 *y1 = simpleline->y1;
329 *x2 = simpleline->x2;
330 *y2 = simpleline->y2;
334 gnome_canvas_simpleline_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item)
336 GnomeCanvasSimpleLine *simpleline;
337 double x1, y1, x2, y2;
340 simpleline = GNOME_CANVAS_SIMPLELINE (item);
344 /* Find the bounds for the rectangle plus its outline width */
346 gnome_canvas_simpleline_bounds (item, &x1, &y1, &x2, &y2);
348 /* Is point inside rectangle */
350 if ((x >= x1) && (y >= y1) && (x <= x2) && (y <= y2)) {
354 /* Point is outside rectangle */
370 return sqrt (dx * dx + dy * dy);