gboolean
rubberband_update (Sheet *sheet, GdkEvent *event)
{
GList *iter;
Coords cur, cmin, cmax;
double dx, dy; // TODO maybe keep track of subpixel changes, make em global/part of the rubberband_info struct and reset on finish
double width, height,
width_ng, height_ng;
RubberbandInfo *rubberband_info;
rubberband_info = sheet->priv->rubberband_info;
g_assert (event->type == GDK_MOTION_NOTIFY);
cur.x = event->motion.x;
cur.y = event->motion.y;
goo_canvas_convert_from_pixels (GOO_CANVAS (sheet), &cur.x, &cur.y);
width = fabs(rubberband_info->end.x - rubberband_info->start.x);
height = fabs(rubberband_info->end.y - rubberband_info->start.y);
width_ng = fabs(cur.x - rubberband_info->start.x);
height_ng = fabs(cur.y - rubberband_info->start.y);
dx = fabs (width_ng - width);
dy = fabs (height_ng - height);
NG_DEBUG ("motion :: dx=%lf, dy=%lf :: x=%lf, y=%lf :: w_ng=%lf, h_ng=%lf", dx, dy, cur.x, cur.y, width_ng, height_ng);
// TODO FIXME scroll window if needed (use http://developer.gnome.org/goocanvas/stable/GooCanvas.html#goo-canvas-scroll-to)
if (dx > 0.1 || dy > 0.1) { //a 0.1 change in pixel coords would be the least visible, silently ignore everything else
rubberband_info->end.x = cur.x;
rubberband_info->end.y = cur.y;
cmin.x = MIN(rubberband_info->start.x, rubberband_info->end.x);
cmin.y = MIN(rubberband_info->start.y, rubberband_info->end.y);
cmax.x = cmin.x + width_ng;
cmax.y = cmin.y + height_ng;
#if 1
for (iter = sheet->priv->items; iter; iter = iter->next) {
sheet_item_select_in_area (iter->data,
&cmin,
&cmax);
}
#endif
g_object_set (GOO_CANVAS_ITEM (rubberband_info->rectangle),
"x", cmin.x,
"y", cmin.y,
"width", width_ng,
"height", height_ng,
"visibility", GOO_CANVAS_ITEM_VISIBLE,
NULL);
goo_canvas_item_raise (GOO_CANVAS_ITEM (rubberband_info->rectangle), NULL);
}
return TRUE;
}
int
sheet_motion_rubberband (Sheet *sheet, GdkEventMotion *event)
{
static double width_old = 0, height_old = 0;
double x, y;
double height, width;
double dx, dy;
GList *list = NULL;
SheetPos p1, p2;
// Obtains the current pointer position and modifier state.
// The position is given in coordinates relative to window.
sheet_get_pointer (sheet, &x, &y);
if (x < sheet->priv->rubberband->start_x) {
width = sheet->priv->rubberband->start_x - x;
}
else {
double tmp = x;
x = sheet->priv->rubberband->start_x;
width = tmp - sheet->priv->rubberband->start_x;
}
if (y < sheet->priv->rubberband->start_y) {
height = sheet->priv->rubberband->start_y - y;
}
else {
double tmp = y;
y = sheet->priv->rubberband->start_y;
height = tmp - sheet->priv->rubberband->start_y;
}
p1.x = x;
p1.y = y;
p2.x = x + width;
p2.y = y + height;
// Scroll the sheet if needed.
// Need FIX
/*{
int width, height;
int dx = 0, dy = 0;
GtkAllocation allocation;
sheet_get_pointer (sheet, &x, &y);
gtk_widget_get_allocation (GTK_WIDGET (sheet), &allocation);
width = allocation.width;
height = allocation.height;
if (_x < 0)
dx = -1;
else if (_x > width)
dx = 1;
if (_y < 0)
dy = -1;
else if (_y > height)
dy = 1;
if (!(_x > 0 && _x < width && _y > 0 && _y < height))
sheet_scroll (sheet, dx * 5, dy * 5);
}*/
// Modify the rubberband rectangle if needed
dx = fabs (width - width_old);
dy = fabs (height - height_old);
if (dx > 1.0 || dy > 1.0) {
// Save old state
width_old = width;
height_old = height;
for (list = sheet->priv->items; list; list = list->next) {
sheet_item_select_in_area (list->data, &p1, &p2);
}
g_object_set (sheet->priv->rubberband->rectangle,
"x", (double) x,
"y", (double) y,
"width", width,
"height", height,
NULL);
//g_list_free_full (list, g_object_unref); //FIXME
}
return TRUE;
}
