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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Authors:
* Martin Owens
*
* Copyright (C) 2022 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <glibmm/i18n.h>
#include "actions/actions-tools.h" // set_active_tool()
#include "ui/tools/booleans-tool.h"
#include "ui/tools/booleans-builder.h"
#include "display/control/canvas-item-group.h"
#include "display/control/canvas-item-drawing.h"
#include "desktop.h"
#include "document.h"
#include "document-undo.h"
#include "event-log.h"
#include "include/macros.h"
#include "selection.h"
#include "ui/icon-names.h"
#include "ui/modifiers.h"
using Inkscape::DocumentUndo;
using Inkscape::Modifiers::Modifier;
namespace Inkscape {
namespace UI {
namespace Tools {
InteractiveBooleansTool::InteractiveBooleansTool(SPDesktop *desktop)
: ToolBase(desktop, "/tools/booleans", "select.svg")
{
to_commit = false;
change_mode(true);
update_status();
if (auto selection = desktop->getSelection()) {
desktop->setWaitingCursor();
boolean_builder = std::make_unique<BooleanBuilder>(selection);
desktop->clearWaitingCursor();
// Any changes to the selection cancel the shape building process
_sel_modified = selection->connectModified([=](Selection *sel, int) { shape_cancel(); });
_sel_changed = selection->connectChanged([=](Selection *sel) { shape_cancel(); });
}
}
InteractiveBooleansTool::~InteractiveBooleansTool()
{
change_mode(false);
_sel_modified.disconnect();
_sel_changed.disconnect();
}
void InteractiveBooleansTool::change_mode(bool setup)
{
_desktop->doc()->get_event_log()->updateUndoVerbs();
_desktop->getCanvasPagesBg()->set_visible(!setup);
_desktop->getCanvasPagesFg()->set_visible(!setup);
_desktop->getCanvasDrawing()->set_visible(!setup);
}
void InteractiveBooleansTool::switching_away(const std::string &new_tool)
{
if (!new_tool.empty() && boolean_builder && new_tool == "/tools/select" || new_tool == "/tool/nodes") {
// Only forcefully commit if we have the user's explicit instruction to do so.
if (boolean_builder->has_changes() || to_commit) {
_desktop->getSelection()->setList(boolean_builder->shape_commit(true));
DocumentUndo::done(_desktop->doc(), "Built Shapes", INKSCAPE_ICON("draw-booleans"));
}
}
}
bool InteractiveBooleansTool::is_ready() const {
if (!boolean_builder || !boolean_builder->has_items()) {
if (_desktop->getSelection()->isEmpty()) {
_desktop->showNotice(_("You must select some objects to use the Shape Builder tool."), 5000);
} else {
_desktop->showNotice(_("The Shape Builder requires regular shapes to be selected."), 5000);
}
return false;
}
return true;
}
void InteractiveBooleansTool::set(const Inkscape::Preferences::Entry& val)
{
Glib::ustring path = val.getEntryName();
if (path == "/tools/booleans/mode") {
update_status();
boolean_builder->task_cancel();
}
}
void InteractiveBooleansTool::shape_commit()
{
to_commit = true;
// disconnect so we don't get canceled by accident.
_sel_modified.disconnect();
_sel_changed.disconnect();
set_active_tool(_desktop, "Select");
}
void InteractiveBooleansTool::shape_cancel()
{
boolean_builder.reset();
set_active_tool(_desktop, "Select");
}
bool InteractiveBooleansTool::root_handler(GdkEvent* event)
{
if (!boolean_builder)
return false;
bool ret = false;
bool add = should_add(event->button.state);
switch (event->type) {
case GDK_BUTTON_PRESS:
ret = event_button_press_handler(event);
break;
case GDK_BUTTON_RELEASE:
ret = event_button_release_handler(event);
break;
case GDK_KEY_PRESS:
ret = event_key_press_handler(event);
// no-break;
case GDK_KEY_RELEASE:
add = should_add(Modifiers::add_keyval(event->key.state, event->key.keyval, event->type == GDK_KEY_RELEASE));
break;
case GDK_MOTION_NOTIFY:
ret = event_motion_handler(event, add);
break;
}
if (!ret) {
set_cursor(add ? "cursor-union.svg" : "cursor-delete.svg");
update_status();
}
return ret || ToolBase::root_handler(event);
}
/**
* Returns true if the shape builder should add items,
* false if shape builder should delete items
*/
bool InteractiveBooleansTool::should_add(int state) const
{
auto prefs = Inkscape::Preferences::get();
bool pref = prefs->getInt("/tools/booleans/mode", 0) != 0;
auto modifier = Modifier::get(Modifiers::Type::BOOL_SHIFT);
return pref == modifier->active(state);
}
void InteractiveBooleansTool::update_status()
{
auto prefs = Inkscape::Preferences::get();
bool pref = prefs->getInt("/tools/booleans/mode", 0) == 0;
auto modifier = Modifier::get(Modifiers::Type::BOOL_SHIFT);
message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
(pref ? "<b>Drag</b> over fragments to unite them. <b>Click</b> to create a segment. Hold <b>%s</b> to Subtract."
: "<b>Drag</b> over fragments to delete them. <b>Click</b> to delete a segment. Hold <b>%s</b> to Unite."),
modifier->get_label().c_str());
}
bool InteractiveBooleansTool::event_button_press_handler(GdkEvent *event)
{
if (event->button.button == 1) {
Geom::Point const button_pt(event->button.x, event->button.y);
boolean_builder->task_select(button_pt, should_add(event->button.state));
return true;
} else if (event->button.button == 3) {
// right click; do not eat it so that right-click menu can appear, but cancel dragging
boolean_builder->task_cancel();
}
return false;
}
bool InteractiveBooleansTool::event_motion_handler(GdkEvent *event, bool add)
{
Geom::Point const motion_pt(event->motion.x, event->motion.y);
if ((event->motion.state & GDK_BUTTON1_MASK)) {
if (boolean_builder->has_task()) {
return boolean_builder->task_add(motion_pt);
} else {
return boolean_builder->task_select(motion_pt, add);
}
} else {
return boolean_builder->highlight(motion_pt, add);
}
return false;
}
bool InteractiveBooleansTool::event_button_release_handler(GdkEvent *event)
{
if (event->button.button == 1) {
boolean_builder->task_commit();
}
return true;
}
bool InteractiveBooleansTool::catch_undo(bool redo) {
if (redo) {
boolean_builder->redo();
} else {
boolean_builder->undo();
}
return true;
}
bool InteractiveBooleansTool::event_key_press_handler(GdkEvent *event)
{
bool ret = false;
switch (get_latin_keyval (&event->key)) {
case GDK_KEY_Escape:
if (boolean_builder->has_task()) {
boolean_builder->task_cancel();
} else {
shape_cancel();
}
ret = true;
break;
case GDK_KEY_Return:
case GDK_KEY_KP_Enter:
if (boolean_builder->has_task()) {
boolean_builder->task_commit();
} else {
shape_commit();
}
ret = true;
break;
case GDK_KEY_z:
case GDK_KEY_Z:
if (event->key.state & INK_GDK_PRIMARY_MASK) {
ret = catch_undo(event->key.state & GDK_SHIFT_MASK);
}
break;
default:
break;
}
return ret;
}
} // namespace Tools
} // namespace UI
} // namespace Inkscape
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