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livetrax/gtk2_ardour/canvas-ruler.c
Nick Mainsbridge 52eba2ccbe more gobject fixups 
git-svn-id: svn://localhost/trunk/ardour2@127 d708f5d6-7413-0410-9779-e7cbd77b26cf
2005-11-27 01:23:55 +00:00

456 lines
10 KiB
C
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#include <stdio.h>
#include <math.h>
#include <libgnomecanvas/libgnomecanvas.h>
#include "canvas-ruler.h"
#include "rgb_macros.h"
enum {
PROP_0,
PROP_X1,
PROP_Y1,
PROP_X2,
PROP_Y2,
PROP_FRAMES_PER_UNIT,
PROP_FILL_COLOR,
PROP_TICK_COLOR
};
static void gnome_canvas_ruler_class_init (GnomeCanvasRulerClass *class);
static void gnome_canvas_ruler_init (GnomeCanvasRuler *ruler);
static void gnome_canvas_ruler_set_arg (GObject *object,
guint prop_id
const GValue *value,
GParamSpec *pspec);
static void gnome_canvas_ruler_get_arg (GObject *object,
guint prop_id
GValue *value,
GParamSpec *pspec);
static void gnome_canvas_ruler_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags);
static void gnome_canvas_ruler_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2);
static double gnome_canvas_ruler_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item);
static void gnome_canvas_ruler_render (GnomeCanvasItem *item, GnomeCanvasBuf *buf);
static void gnome_canvas_ruler_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x, int y, int w, int h);
static GnomeCanvasItemClass *parent_class;
GtkType
gnome_canvas_ruler_get_type (void)
{
static GtkType ruler_type = 0;
if (!ruler_type) {
GtkTypeInfo ruler_info = {
"GnomeCanvasRuler",
sizeof (GnomeCanvasRuler),
sizeof (GnomeCanvasRulerClass),
(GtkClassInitFunc) gnome_canvas_ruler_class_init,
(GtkObjectInitFunc) gnome_canvas_ruler_init,
NULL, /* reserved_1 */
NULL, /* reserved_2 */
(GtkClassInitFunc) NULL
};
ruler_type = gtk_type_unique (gnome_canvas_item_get_type (), &ruler_info);
}
return ruler_type;
}
static void
gnome_canvas_ruler_class_init (GnomeCanvasRulerClass *class)
{
GtkObjectClass *object_class;
GnomeCanvasItemClass *item_class;
object_class = G_OBJECT_CLASS (class);
item_class = (GnomeCanvasItemClass *) class;
parent_class = gtk_type_class (gnome_canvas_item_get_type ());
object_class->set_property = gnome_canvas_ruler_set_property;
object_class->get_property = gnome_canvas_ruler_get_property;
g_object_class_install_property (object_class,
PROP_X1,
g_param_spec_double ("x1",
_("x1"),
_("x coordinate of upper left corner of rect"),
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_Y1,
g_param_spec_double ("y1",
_("y1"),
_("y coordinate of upper left corner of rect "),
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_X2,
g_param_spec_double ("x2",
_("x2"),
_("x coordinate of lower right corner of rect"),
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_Y2,
g_param_spec_double ("y2",
_("y2"),
_("y coordinate of lower right corner of rect "),
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_FRAMES_PER_UNIT,
g_param_spec_long ("frames_per_unit",
_("frames_per_unit"),
_("frames_per_unit of ruler"),
-G_MAXLONG,
G_MAXLONG,
0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_FILL_COLOR,
g_param_spec_uint ("fill_color",
_("fill color"),
_("color of fill"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_TICK_COLOR,
g_param_spec_uint ("tick_color",
_("tick color"),
_("color of tick"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
item_class->update = gnome_canvas_ruler_update;
item_class->bounds = gnome_canvas_ruler_bounds;
item_class->point = gnome_canvas_ruler_point;
item_class->render = gnome_canvas_ruler_render;
item_class->draw = gnome_canvas_ruler_draw;
}
static void
gnome_canvas_ruler_init (GnomeCanvasRuler *ruler)
{
ruler->x1 = 0.0;
ruler->y1 = 0.0;
ruler->x2 = 0.0;
ruler->y2 = 0.0;
ruler->frames_per_unit = 1;
ruler->fill_color = 0;
ruler->tick_color = 0;
// GTK2FIX
//GNOME_CANVAS_ITEM(ruler)->object.flags |= GNOME_CANVAS_ITEM_NO_AUTO_REDRAW;
}
static void
gnome_canvas_ruler_reset_bounds (GnomeCanvasItem *item)
{
double x1, x2, y1, y2;
ArtPoint i1, i2;
ArtPoint w1, w2;
int Ix1, Ix2, Iy1, Iy2;
double i2w[6];
gnome_canvas_ruler_bounds (item, &x1, &y1, &x2, &y2);
i1.x = x1;
i1.y = y1;
i2.x = x2;
i2.y = y2;
gnome_canvas_item_i2w_affine (item, i2w);
art_affine_point (&w1, &i1, i2w);
art_affine_point (&w2, &i2, i2w);
Ix1 = (int) rint(w1.x);
Ix2 = (int) rint(w2.x);
Iy1 = (int) rint(w1.y);
Iy2 = (int) rint(w2.y);
gnome_canvas_update_bbox (item, Ix1, Iy1, Ix2, Iy2);
}
/*
* CANVAS CALLBACKS
*/
static void
gnome_canvas_ruler_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GnomeCanvasItem *item;
GnomeCanvasRuler *ruler;
int redraw;
int calc_bounds;
item = GNOME_CANVAS_ITEM (object);
ruler = GNOME_CANVAS_RULER (object);
redraw = FALSE;
calc_bounds = FALSE;
switch (prop_id) {
case PROP_X1:
if (ruler->x1 != g_value_get_double (value)) {
ruler->x1 = g_value_get_double (value);
calc_bounds = TRUE;
}
break;
case PROP_Y1:
if (ruler->y1 != g_value_get_double (value)) {
ruler->y1 = g_value_get_double (value);
calc_bounds = TRUE;
}
break;
case PROP_X2:
if (ruler->x2 != g_value_get_double (value)) {
ruler->x2 = g_value_get_double (value);
calc_bounds = TRUE;
}
break;
case PROP_Y2:
if (ruler->y2 != g_value_get_double (value)) {
ruler->y2 = g_value_get_double (value);
calc_bounds = TRUE;
}
break;
case PROP_FRAMES_PER_UNIT:
if (ruler->frames_per_unit != g_value_get_long(value)) {
ruler->frames_per_unit = g_value_get_long(value);
redraw = TRUE;
}
break;
case PROP_FILL_COLOR:
if (ruler->fill_color != g_value_get_uint(value)) {
ruler->fill_color = g_value_get_uint(value);
redraw = TRUE;
}
break;
case PROP_TICK_COLOR:
if (ruler->tick_color != g_value_get_uint(value)) {
ruler->tick_color = g_value_get_uint(value);
redraw = TRUE;
}
break;
default:
break;
}
if (calc_bounds) {
gnome_canvas_ruler_reset_bounds (item);
}
if (redraw) {
gnome_canvas_item_request_update (item);
}
}
static void
gnome_canvas_ruler_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GnomeCanvasRuler *ruler;
ruler = GNOME_CANVAS_RULER (object);
switch (prop_id) {
case PROP_X1:
g_value_set_double (value, ruler->x1);
break;
case PROP_Y1:
g_value_set_double (value, ruler->y1);
break;
case PROP_X2:
g_value_set_double (value, ruler->x2);
break;
case PROP_Y2:
g_value_set_double (value, ruler->y2);
break;
case PROP_FRAMES_PER_UNIT:
g_value_set_long (value, ruler->frames_per_unit);
break;
case PROP_FILL_COLOR:
g_value_set_uint (value, ruler->fill_color);
break;
case PROP_TICK_COLOR:
g_value_set_uint (value, ruler->tick_color);
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
static void
gnome_canvas_ruler_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
{
GnomeCanvasRuler *ruler;
double x;
double y;
ruler = GNOME_CANVAS_RULER (item);
if (parent_class->update)
(* parent_class->update) (item, affine, clip_path, flags);
gnome_canvas_ruler_reset_bounds (item);
x = ruler->x1;
y = ruler->y1;
gnome_canvas_item_i2w (item, &x, &y);
gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x, y, &ruler->bbox_ulx, &ruler->bbox_uly);
x = ruler->x2;
y = ruler->y2;
gnome_canvas_item_i2w (item, &x, &y);
gnome_canvas_w2c (GNOME_CANVAS(item->canvas), x, y, &ruler->bbox_lrx, &ruler->bbox_lry);
UINT_TO_RGB (ruler->tick_color, &ruler->tick_r, &ruler->tick_g, &ruler->tick_b);
UINT_TO_RGB (ruler->fill_color, &ruler->fill_r, &ruler->fill_g, &ruler->fill_b);
}
static void
gnome_canvas_ruler_render (GnomeCanvasItem *item,
GnomeCanvasBuf *buf)
{
GnomeCanvasRuler *ruler;
int end, begin;
ruler = GNOME_CANVAS_RULER (item);
if (parent_class->render) {
(*parent_class->render) (item, buf);
}
if (buf->is_bg) {
gnome_canvas_buf_ensure_buf (buf);
buf->is_bg = FALSE;
}
begin = MAX(ruler->bbox_ulx,buf->rect.x0);
if (ruler->bbox_lrx >= 0) {
end = MIN(ruler->bbox_lrx,buf->rect.x1);
} else {
end = buf->rect.x1;
}
if (begin == end) {
return;
}
PAINT_BOX (buf, ruler->fill_r, ruler->fill_g, ruler->fill_b, 255, begin, ruler->bbox_uly, end, ruler->bbox_lry - 1);
PAINT_HORIZ (buf, ruler->tick_r, ruler->tick_g, ruler->tick_b, begin, end, ruler->bbox_lry - 1);
}
static void
gnome_canvas_ruler_draw (GnomeCanvasItem *item,
GdkDrawable *drawable,
int x, int y,
int width, int height)
{
GnomeCanvasRuler *ruler;
ruler = GNOME_CANVAS_RULER (item);
if (parent_class->draw) {
(* parent_class->draw) (item, drawable, x, y, width, height);
}
fprintf (stderr, "please don't use the CanvasRuler item in a non-aa Canvas\n");
abort ();
}
static void
gnome_canvas_ruler_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2)
{
GnomeCanvasRuler *ruler = GNOME_CANVAS_RULER (item);
*x1 = ruler->x1;
*y1 = ruler->y1;
*x2 = ruler->x2;
*y2 = ruler->y2;
}
static double
gnome_canvas_ruler_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item)
{
GnomeCanvasRuler *ruler;
double x1, y1, x2, y2;
double dx, dy;
ruler = GNOME_CANVAS_RULER (item);
*actual_item = item;
/* Find the bounds for the rectangle plus its outline width */
gnome_canvas_ruler_bounds (item, &x1, &y1, &x2, &y2);
/* Is point inside rectangle */
if ((x >= x1) && (y >= y1) && (x <= x2) && (y <= y2)) {
return 0.0;
}
/* Point is outside rectangle */
if (x < x1)
dx = x1 - x;
else if (x > x2)
dx = x - x2;
else
dx = 0.0;
if (y < y1)
dy = y1 - y;
else if (y > y2)
dy = y - y2;
else
dy = 0.0;
return sqrt (dx * dx + dy * dy);
}
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