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//
// Widget Bin Button code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2025 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
#include "widgets/Bin_Button.h"
#include "Fluid.h"
#include "nodes/factory.h"
#include "nodes/Window_Node.h"
#include "widgets/Node_Browser.h"
#include <FL/Fl_Button.H>
#include <FL/Fl_Window.H>
using namespace fld;
using namespace fld::widget;
/** \class fld::widget::Bin_Button
The Bin_Button button is a button that can be used in the widget bin to
allow the user to drag and drop widgets into a window or group. This feature
makes it easy for the user to position a widget at a specific location within
the window or group.
*/
/**
Convert mouse dragging into a drag and drop event.
*/
int fld::widget::Bin_Button::handle(int inEvent)
{
int ret = 0;
switch (inEvent) {
case FL_PUSH:
Fl_Button::handle(inEvent);
return 1; // make sure that we get drag events
case FL_DRAG:
ret = Fl_Button::handle(inEvent);
if (!user_data())
return ret;
if (!Fl::event_is_click()) { // make it a dnd event
// fake a drag outside of the widget
Fl::e_x = x()-1;
Fl_Button::handle(inEvent);
// fake a button release
Fl_Button::handle(FL_RELEASE);
// make it into a dnd event
const char *type_name = (const char*)user_data();
Fluid.proj.tree.current_dnd = Fluid.proj.tree.current;
Fl::copy(type_name, (int)strlen(type_name)+1, 0);
Fl::dnd();
return 1;
}
return ret;
}
return Fl_Button::handle(inEvent);
}
/** \class fld::widget::Bin_Window_Button
The Bin_Window_Button button is used in the widget bin to create new
windows by dragging and dropping. When the button is dragged and dropped onto
the desktop, a new window will be created at the drop location.
This does not work in Wayland because Wayland does not allow client
applications to control window placement.
*/
/**
Convert mouse dragging into a drag and drop event.
*/
int fld::widget::Bin_Window_Button::handle(int inEvent)
{
static Fl_Window *drag_win = nullptr;
int ret = 0;
switch (inEvent) {
case FL_PUSH:
Fl_Button::handle(inEvent);
return 1; // make sure that we get drag events
case FL_DRAG:
ret = Fl_Button::handle(inEvent);
if (!user_data())
return ret;
if (!Fl::event_is_click()) {
if (!drag_win) {
drag_win = new Fl_Window(0, 0, 480, 320);
drag_win->border(0);
drag_win->set_non_modal();
}
if (drag_win) {
drag_win->position(Fl::event_x_root()+1, Fl::event_y_root()+1);
drag_win->show();
}
// Does not work outside window: fl_cursor(FL_CURSOR_HAND);
}
return ret;
case FL_RELEASE:
if (drag_win) {
Fl::delete_widget(drag_win);
drag_win = nullptr;
// create a new window here
Node *prototype = typename_to_prototype((char*)user_data());
if (prototype) {
Node *new_type = add_new_widget_from_user(prototype, Strategy::AFTER_CURRENT);
if (new_type && new_type->is_a(FLD_NODE_TYPE_Window)) {
Window_Node *new_window = (Window_Node*)new_type;
Fl_Window *w = (Fl_Window *)new_window->o;
w->position(Fl::event_x_root(), Fl::event_y_root());
}
}
widget_browser->display(Fluid.proj.tree.current);
widget_browser->rebuild();
}
return Fl_Button::handle(inEvent);
}
return Fl_Button::handle(inEvent);
}
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