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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Gio::Actions for transforming the canvas view. Tied to a particular InkscapeWindow.
*
* Copyright (C) 2020 Tavmjong Bah
*
* The contents of this file may be used under the GNU General Public License Version 2 or later.
*
*/
#include <iostream>
#include <giomm.h> // Not <gtkmm.h>! To eventually allow a headless version!
#include <glibmm/i18n.h>
#include "actions-canvas-transform.h"
#include "inkscape-application.h"
#include "inkscape-window.h"
#include "desktop.h"
#include "object/sp-namedview.h"
#include "page-manager.h"
#include "ui/tools/freehand-base.h" // SP_DRAW_CONTEXT
#include "ui/tools/pen-tool.h"
#include "ui/tools/pencil-tool.h"
#include "ui/widget/canvas.h" // Canvas area
enum {
INK_CANVAS_ZOOM_IN,
INK_CANVAS_ZOOM_OUT,
INK_CANVAS_ZOOM_1_1,
INK_CANVAS_ZOOM_1_2,
INK_CANVAS_ZOOM_2_1,
INK_CANVAS_ZOOM_SELECTION,
INK_CANVAS_ZOOM_DRAWING,
INK_CANVAS_ZOOM_PAGE,
INK_CANVAS_ZOOM_PAGE_WIDTH,
INK_CANVAS_ZOOM_CENTER_PAGE,
INK_CANVAS_ZOOM_PREV,
INK_CANVAS_ZOOM_NEXT,
INK_CANVAS_ROTATE_CW,
INK_CANVAS_ROTATE_CCW,
INK_CANVAS_ROTATE_RESET,
INK_CANVAS_FLIP_HORIZONTAL,
INK_CANVAS_FLIP_VERTICAL,
INK_CANVAS_FLIP_RESET
};
static void
canvas_zoom_helper(SPDesktop* dt, const Geom::Point& midpoint, double zoom_factor)
{
if (dynamic_cast<Inkscape::UI::Tools::PencilTool *>(dt->event_context) ||
dynamic_cast<Inkscape::UI::Tools::PenTool *>(dt->event_context) ) {
// Zoom around end of unfinished path.
std::optional<Geom::Point> zoom_to =
dynamic_cast<Inkscape::UI::Tools::FreehandBase*>(dt->event_context)->red_curve_get_last_point();
if (zoom_to) {
dt->zoom_relative(*zoom_to, zoom_factor);
return;
}
}
dt->zoom_relative(midpoint, zoom_factor, false);
}
void
canvas_transform(InkscapeWindow *win, const int& option)
{
SPDesktop* dt = win->get_desktop();
SPDocument *doc = dt->getDocument();
// The following might be better done elsewhere:
// Get preference dependent parameters
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
double zoom_inc =
prefs->getDoubleLimited("/options/zoomincrement/value", M_SQRT2, 1.01, 10);
double rotate_inc =
prefs->getDoubleLimited("/options/rotateincrement/value", 15, 1, 90, "°");
rotate_inc *= M_PI/180.0;
// Get document dependent parameters
Geom::Rect const canvas = dt->getCanvas()->get_area_world();
Geom::Point midpoint = dt->w2d(canvas.midpoint()); // Midpoint of drawing on canvas.
switch (option) {
case INK_CANVAS_ZOOM_IN:
canvas_zoom_helper( dt, midpoint, zoom_inc);
break;
case INK_CANVAS_ZOOM_OUT:
canvas_zoom_helper( dt, midpoint, 1.0 / zoom_inc); // zoom_inc > 1
break;
case INK_CANVAS_ZOOM_1_1:
dt->zoom_realworld( midpoint, 1.0 );
break;
case INK_CANVAS_ZOOM_1_2:
dt->zoom_realworld( midpoint, 0.5 );
break;
case INK_CANVAS_ZOOM_2_1:
dt->zoom_realworld( midpoint, 2.0 );
break;
case INK_CANVAS_ZOOM_SELECTION:
dt->zoom_selection();
break;
case INK_CANVAS_ZOOM_DRAWING:
dt->zoom_drawing();
break;
case INK_CANVAS_ZOOM_PAGE:
doc->getPageManager().zoomToSelectedPage(dt, false);
break;
case INK_CANVAS_ZOOM_PAGE_WIDTH:
doc->getPageManager().zoomToSelectedPage(dt, true);
break;
case INK_CANVAS_ZOOM_CENTER_PAGE:
doc->getPageManager().centerToSelectedPage(dt);
break;
case INK_CANVAS_ZOOM_PREV:
dt->prev_transform();
break;
case INK_CANVAS_ZOOM_NEXT:
dt->next_transform(); // Is this only zoom? Yes!
break;
case INK_CANVAS_ROTATE_CW:
dt->rotate_relative_center_point (midpoint, rotate_inc);
break;
case INK_CANVAS_ROTATE_CCW:
dt->rotate_relative_center_point (midpoint, -rotate_inc);
break;
case INK_CANVAS_ROTATE_RESET:
dt->rotate_absolute_center_point (midpoint, 0);
break;
case INK_CANVAS_FLIP_HORIZONTAL:
dt->flip_relative_center_point (midpoint, SPDesktop::FLIP_HORIZONTAL);
break;
case INK_CANVAS_FLIP_VERTICAL:
dt->flip_relative_center_point (midpoint, SPDesktop::FLIP_VERTICAL);
break;
case INK_CANVAS_FLIP_RESET:
dt->flip_absolute_center_point (midpoint, SPDesktop::FLIP_NONE);
break;
default:
std::cerr << "canvas_zoom: unhandled action value!" << std::endl;
}
}
/**
* Toggle rotate lock.
*/
void
canvas_rotate_lock(InkscapeWindow *win)
{
auto action = win->lookup_action("canvas-rotate-lock");
if (!action) {
std::cerr << "canvas_rotate_lock: action missing!" << std::endl;
return;
}
auto saction = Glib::RefPtr<Gio::SimpleAction>::cast_dynamic(action);
if (!saction) {
std::cerr << "canvas_rotate_lock: action not SimpleAction!" << std::endl;
return;
}
bool state = false;
saction->get_state(state);
state = !state;
saction->change_state(state);
// Save value as a preference
Inkscape::Preferences *pref = Inkscape::Preferences::get();
pref->setBool("/options/rotationlock", state);
std::cout << "rotate_lock: set to: " << state << std::endl;
SPDesktop* dt = win->get_desktop();
dt->set_rotation_lock(state);
}
std::vector<std::vector<Glib::ustring>> raw_data_canvas_transform =
{
// clang-format off
{"win.canvas-zoom-in", N_("Zoom In"), "Canvas Geometry", N_("Zoom in") },
{"win.canvas-zoom-out", N_("Zoom Out"), "Canvas Geometry", N_("Zoom out") },
{"win.canvas-zoom-1-1", N_("Zoom 1:1"), "Canvas Geometry", N_("Zoom to 1:1") },
{"win.canvas-zoom-1-2", N_("Zoom 1:2"), "Canvas Geometry", N_("Zoom to 1:2") },
{"win.canvas-zoom-2-1", N_("Zoom 2:1"), "Canvas Geometry", N_("Zoom to 2:1") },
{"win.canvas-zoom-selection", N_("Zoom Selection"), "Canvas Geometry", N_("Zoom to fit selection in window") },
{"win.canvas-zoom-drawing", N_("Zoom Drawing"), "Canvas Geometry", N_("Zoom to fit drawing in window") },
{"win.canvas-zoom-page", N_("Zoom Page"), "Canvas Geometry", N_("Zoom to fit page in window") },
{"win.canvas-zoom-page-width", N_("Zoom Page Width"), "Canvas Geometry", N_("Zoom to fit page width in window") },
{"win.canvas-zoom-center-page", N_("Zoom Center Page"), "Canvas Geometry", N_("Center page in window") },
{"win.canvas-zoom-prev", N_("Zoom Prev"), "Canvas Geometry", N_("Go back to previous zoom (from the history of zooms)")},
{"win.canvas-zoom-next", N_("Zoom Next"), "Canvas Geometry", N_("Go to next zoom (from the history of zooms)")},
{"win.canvas-rotate-cw", N_("Rotate Clockwise"), "Canvas Geometry", N_("Rotate canvas clockwise") },
{"win.canvas-rotate-ccw", N_("Rotate Counter-CW"), "Canvas Geometry", N_("Rotate canvas counter-clockwise") },
{"win.canvas-rotate-reset", N_("Reset Rotation"), "Canvas Geometry", N_("Reset canvas rotation") },
{"win.canvas-flip-horizontal", N_("Flip Horizontal"), "Canvas Geometry", N_("Flip canvas horizontally") },
{"win.canvas-flip-vertical", N_("Flip Vertical"), "Canvas Geometry", N_("Flip canvas vertically") },
{"win.canvas-flip-reset", N_("Reset Flipping"), "Canvas Geometry", N_("Reset canvas flipping") },
{"win.canvas-rotate-lock", N_("Lock Rotation"), "Canvas Geometry", N_("Lock canvas rotation") },
// clang-format on
};
void
add_actions_canvas_transform(InkscapeWindow* win)
{
auto prefs = Inkscape::Preferences::get();
bool rotate_lock = prefs->getBool("/options/rotationlock");
SPDesktop* dt = win->get_desktop();
if (dt) {
dt->set_rotation_lock(rotate_lock);
} else {
std::cerr << "add_actions_canvas_transform: no desktop!" << std::endl;
}
// clang-format off
win->add_action( "canvas-zoom-in", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_IN));
win->add_action( "canvas-zoom-out", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_OUT));
win->add_action( "canvas-zoom-1-1", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_1_1));
win->add_action( "canvas-zoom-1-2", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_1_2));
win->add_action( "canvas-zoom-2-1", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_2_1));
win->add_action( "canvas-zoom-selection", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_SELECTION));
win->add_action( "canvas-zoom-drawing", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_DRAWING));
win->add_action( "canvas-zoom-page", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_PAGE));
win->add_action( "canvas-zoom-page-width", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_PAGE_WIDTH));
win->add_action( "canvas-zoom-center-page",sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_CENTER_PAGE));
win->add_action( "canvas-zoom-prev", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_PREV));
win->add_action( "canvas-zoom-next", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ZOOM_NEXT));
win->add_action( "canvas-rotate-cw", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ROTATE_CW));
win->add_action( "canvas-rotate-ccw", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ROTATE_CCW));
win->add_action( "canvas-rotate-reset", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_ROTATE_RESET));
win->add_action( "canvas-flip-horizontal", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_FLIP_HORIZONTAL));
win->add_action( "canvas-flip-vertical", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_FLIP_VERTICAL));
win->add_action( "canvas-flip-reset", sigc::bind<InkscapeWindow*, int>(sigc::ptr_fun(&canvas_transform), win, INK_CANVAS_FLIP_RESET));
win->add_action_bool( "canvas-rotate-lock",sigc::bind<InkscapeWindow*>(sigc::ptr_fun(&canvas_rotate_lock), win), rotate_lock);
// clang-format on
auto app = InkscapeApplication::instance();
if (!app) {
std::cerr << "add_actions_canvas_transform: no app!" << std::endl;
return;
}
app->get_action_extra_data().add_data(raw_data_canvas_transform);
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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