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Diffstat (limited to 'src/actions/actions-canvas-transform.cpp')
| -rw-r--r-- | src/actions/actions-canvas-transform.cpp | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/src/actions/actions-canvas-transform.cpp b/src/actions/actions-canvas-transform.cpp new file mode 100644 index 0000000..da9cec2 --- /dev/null +++ b/src/actions/actions-canvas-transform.cpp @@ -0,0 +1,286 @@ +// 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 : |