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// This file is part of fityk program. Copyright 2001-2013 Marcin Wojdyr
// Licence: GNU General Public License ver. 2+
/// DraggedFunc - used for dragging function in MainPlot
#include "drag.h"
#include "fityk/func.h"
#include "fityk/tplate.h"
#include "fityk/mgr.h"
#include "fityk/common.h" // for index_of_element, eS, etc
using namespace std;
using namespace fityk;
static
int find_parameter_with_name(const Tplate& tp, const string& name)
{
// search for Function(..., height, ...)
int idx = index_of_element(tp.fargs, name);
if (idx == -1) {
const vector<string>& defvals = tp.defvals;
// search for Function(..., foo=height, ...)
idx = index_of_element(defvals, name);
// search for Function(..., foo=height*..., ...)
if (idx == -1) {
v_foreach (string, i, defvals)
if (startswith(*i, name+"*")) {
idx = i - defvals.begin();
//string mult = defvals.substr(name.size()+1);
//double extra_multiplier = TODO(parse mult)
break;
}
}
}
return idx;
}
static
bool bind_param(const ModelManager& mgr,
DraggedFunc::Drag &drag, const string& name,
const Function* p, DraggedFunc::DragType how,
double multiplier=1.)
{
int idx = find_parameter_with_name(*p->tp(), name);
if (idx == -1)
return false;
const Variable* var = mgr.get_variable(p->used_vars().get_idx(idx));
if (var->is_simple()) {
drag.how = how;
drag.parameter_idx = idx;
drag.parameter_name = p->get_param(idx);
drag.variable_name = p->used_vars().get_name(idx);
drag.value = drag.ini_value = p->av()[idx];
drag.multiplier = multiplier;
drag.ini_x = 0.;
} else {
drag.how = DraggedFunc::no_drag;
}
return true;
}
void DraggedFunc::start(const Function* p, int X, int Y, double x, double y,
DraggedFuncObserver* callback)
{
callback_ = callback;
drag_x_.how = drag_y_.how = drag_shift_x_.how = drag_shift_y_.how = no_drag;
drag_x_.parameter_name = drag_y_.parameter_name
= drag_shift_x_.parameter_name = drag_shift_y_.parameter_name = "-";
bind_param(mgr_, drag_x_, "center", p, absolute_value)
|| bind_param(mgr_, drag_x_, "xmid", p, absolute_value);
bind_param(mgr_, drag_y_, "height", p, absolute_value)
|| bind_param(mgr_, drag_y_, "area", p, relative_value)
|| bind_param(mgr_, drag_y_, "avgy", p, absolute_value)
|| bind_param(mgr_, drag_y_, "intercept", p, absolute_value)
|| bind_param(mgr_, drag_y_, "upper", p, absolute_value);
bind_param(mgr_, drag_shift_x_, "hwhm", p, absolute_value)
|| bind_param(mgr_, drag_shift_x_, "fwhm", p, absolute_value, 2.)
|| bind_param(mgr_, drag_shift_x_, "wsig", p, absolute_value, 1.);
bind_param(mgr_, drag_shift_y_, "lower", p, absolute_value);
status_ = "Move to change: " + drag_x_.parameter_name + "/"
+ drag_y_.parameter_name + ", with [Shift]: "
+ drag_shift_x_.parameter_name + "/" + drag_shift_y_.parameter_name;
pX_ = X;
pY_ = Y;
px_ = x;
py_ = y;
}
void DraggedFunc::move(bool shift, int X, int Y, double x, double y)
{
Drag &hor = shift ? drag_shift_x_ : drag_x_;
change_value(&hor, x, x - px_, X - pX_);
pX_ = X;
px_ = x;
Drag &vert = shift ? drag_shift_y_ : drag_y_;
change_value(&vert, y, y - py_, Y - pY_);
pY_ = Y;
py_ = y;
}
void DraggedFunc::change_value(Drag *drag, double x, double dx, int dX)
{
if (dx == 0. || dX == 0)
return;
switch (drag->how) {
case no_drag:
return;
case relative_value:
if (drag->ini_x == 0.) {
drag->ini_x = x - dx;
if (is_zero(drag->ini_x))
drag->ini_x += dx;
}
//drag->value += dx * fabs(value / x) * multiplier;
drag->value = x / drag->ini_x * drag->ini_value;
break;
case absolute_value:
drag->value += dx * drag->multiplier;
break;
case absolute_pixels:
drag->value += dX * drag->multiplier;
break;
}
callback_->change_parameter_value(drag->parameter_idx, drag->value);
has_changed_ = true;
}
void DraggedFunc::stop()
{
drag_x_.how = drag_y_.how = drag_shift_x_.how = drag_shift_y_.how = no_drag;
has_changed_ = false;
}
string DraggedFunc::get_cmd() const
{
const Drag* drags[] = { &drag_x_, &drag_y_, &drag_shift_x_, &drag_shift_y_,
NULL };
string cmd;
for (const Drag **d = drags; *d != NULL; ++d) {
const Drag& drag = **d;
if (drag.how != no_drag && drag.value != drag.ini_value) {
if (!cmd.empty())
cmd += "; ";
cmd += "$" + drag.variable_name + " = ~" + eS(drag.value);
}
}
return cmd;
}
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