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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 11:50:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 11:50:49 +0000
commitc853ffb5b2f75f5a889ed2e3ef89b818a736e87a (patch)
tree7d13a0883bb7936b84d6ecdd7bc332b41ed04bee /src/ui/tools/mesh-tool.cpp
parentInitial commit. (diff)
downloadinkscape-c853ffb5b2f75f5a889ed2e3ef89b818a736e87a.tar.xz
inkscape-c853ffb5b2f75f5a889ed2e3ef89b818a736e87a.zip
Adding upstream version 1.3+ds.upstream/1.3+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/ui/tools/mesh-tool.cpp')
-rw-r--r--src/ui/tools/mesh-tool.cpp970
1 files changed, 970 insertions, 0 deletions
diff --git a/src/ui/tools/mesh-tool.cpp b/src/ui/tools/mesh-tool.cpp
new file mode 100644
index 0000000..2521471
--- /dev/null
+++ b/src/ui/tools/mesh-tool.cpp
@@ -0,0 +1,970 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Mesh drawing and editing tool
+ *
+ * Authors:
+ * bulia byak <buliabyak@users.sf.net>
+ * Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
+ * Abhishek Sharma
+ * Tavmjong Bah <tavmjong@free.fr>
+ *
+ * Copyright (C) 2012 Tavmjong Bah
+ * Copyright (C) 2007 Johan Engelen
+ * Copyright (C) 2005 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+//#define DEBUG_MESH
+
+#include "mesh-tool.h"
+
+// Libraries
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+// General
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "gradient-drag.h"
+#include "gradient-chemistry.h"
+#include "include/macros.h"
+#include "message-context.h"
+#include "message-stack.h"
+#include "rubberband.h"
+#include "selection.h"
+#include "snap.h"
+
+#include "display/control/canvas-item-curve.h"
+#include "display/curve.h"
+
+#include "object/sp-defs.h"
+#include "object/sp-mesh-gradient.h"
+#include "object/sp-namedview.h"
+#include "object/sp-text.h"
+#include "style.h"
+
+#include "ui/icon-names.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+// TODO: The gradient tool class looks like a 1:1 copy.
+
+MeshTool::MeshTool(SPDesktop *desktop)
+ : ToolBase(desktop, "/tools/mesh", "mesh.svg")
+// TODO: Why are these connections stored as pointers?
+ , selcon(nullptr)
+ , subselcon(nullptr)
+ , cursor_addnode(false)
+ , show_handles(true)
+ , edit_fill(true)
+ , edit_stroke(true)
+{
+ // TODO: This value is overwritten in the root handler
+ this->tolerance = 6;
+
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ if (prefs->getBool("/tools/mesh/selcue", true)) {
+ this->enableSelectionCue();
+ }
+
+ this->enableGrDrag();
+ Inkscape::Selection *selection = desktop->getSelection();
+
+ this->selcon = new sigc::connection(selection->connectChanged(
+ sigc::mem_fun(*this, &MeshTool::selection_changed)
+ ));
+
+ this->subselcon = new sigc::connection(desktop->connectToolSubselectionChanged(
+ sigc::hide(sigc::bind(
+ sigc::mem_fun(*this, &MeshTool::selection_changed),
+ (Inkscape::Selection*)nullptr)
+ )
+ ));
+
+ sp_event_context_read(this, "show_handles");
+ sp_event_context_read(this, "edit_fill");
+ sp_event_context_read(this, "edit_stroke");
+
+ this->selection_changed(selection);
+}
+
+MeshTool::~MeshTool() {
+ this->enableGrDrag(false);
+
+ this->selcon->disconnect();
+ delete this->selcon;
+
+ this->subselcon->disconnect();
+ delete this->subselcon;
+}
+
+// This must match GrPointType enum sp-gradient.h
+// We should move this to a shared header (can't simply move to gradient.h since that would require
+// including <glibmm/i18n.h> which messes up "N_" in extensions... argh!).
+const gchar *ms_handle_descr [] = {
+ N_("Linear gradient <b>start</b>"), //POINT_LG_BEGIN
+ N_("Linear gradient <b>end</b>"),
+ N_("Linear gradient <b>mid stop</b>"),
+ N_("Radial gradient <b>center</b>"),
+ N_("Radial gradient <b>radius</b>"),
+ N_("Radial gradient <b>radius</b>"),
+ N_("Radial gradient <b>focus</b>"), // POINT_RG_FOCUS
+ N_("Radial gradient <b>mid stop</b>"),
+ N_("Radial gradient <b>mid stop</b>"),
+ N_("Mesh gradient <b>corner</b>"),
+ N_("Mesh gradient <b>handle</b>"),
+ N_("Mesh gradient <b>tensor</b>")
+};
+
+void MeshTool::selection_changed(Inkscape::Selection* /*sel*/) {
+ Inkscape::Selection *selection = _desktop->getSelection();
+
+ if (selection == nullptr) {
+ return;
+ }
+
+ guint n_obj = (guint) boost::distance(selection->items());
+
+ if (!_grdrag->isNonEmpty() || selection->isEmpty()) {
+ return;
+ }
+
+ guint n_tot = _grdrag->numDraggers();
+ guint n_sel = _grdrag->numSelected();
+
+ //The use of ngettext in the following code is intentional even if the English singular form would never be used
+ if (n_sel == 1) {
+ if (_grdrag->singleSelectedDraggerNumDraggables() == 1) {
+ gchar * message = g_strconcat(
+ //TRANSLATORS: %s will be substituted with the point name (see previous messages); This is part of a compound message
+ _("%s selected"),
+ //TRANSLATORS: Mind the space in front. This is part of a compound message
+ ngettext(" out of %d mesh handle"," out of %d mesh handles",n_tot),
+ ngettext(" on %d selected object"," on %d selected objects",n_obj),nullptr);
+ this->message_context->setF(Inkscape::NORMAL_MESSAGE, message,
+ _(ms_handle_descr[_grdrag->singleSelectedDraggerSingleDraggableType()]), n_tot, n_obj);
+ } else {
+ gchar * message =
+ g_strconcat(
+ //TRANSLATORS: This is a part of a compound message (out of two more indicating: grandint handle count & object count)
+ ngettext("One handle merging %d stop (drag with <b>Shift</b> to separate) selected",
+ "One handle merging %d stops (drag with <b>Shift</b> to separate) selected",
+ _grdrag->singleSelectedDraggerNumDraggables()),
+ ngettext(" out of %d mesh handle"," out of %d mesh handles",n_tot),
+ ngettext(" on %d selected object"," on %d selected objects",n_obj),nullptr);
+ this->message_context->setF(Inkscape::NORMAL_MESSAGE, message, _grdrag->singleSelectedDraggerNumDraggables(), n_tot, n_obj);
+ }
+ } else if (n_sel > 1) {
+ //TRANSLATORS: The plural refers to number of selected mesh handles. This is part of a compound message (part two indicates selected object count)
+ gchar * message =
+ g_strconcat(ngettext("<b>%d</b> mesh handle selected out of %d","<b>%d</b> mesh handles selected out of %d",n_sel),
+ //TRANSLATORS: Mind the space in front. (Refers to gradient handles selected). This is part of a compound message
+ ngettext(" on %d selected object"," on %d selected objects",n_obj),nullptr);
+ this->message_context->setF(Inkscape::NORMAL_MESSAGE, message, n_sel, n_tot, n_obj);
+ } else if (n_sel == 0) {
+ this->message_context->setF(Inkscape::NORMAL_MESSAGE,
+ //TRANSLATORS: The plural refers to number of selected objects
+ ngettext("<b>No</b> mesh handles selected out of %d on %d selected object",
+ "<b>No</b> mesh handles selected out of %d on %d selected objects",n_obj), n_tot, n_obj);
+ }
+
+ // FIXME
+ // We need to update mesh gradient handles.
+ // Get gradient this drag belongs too..
+}
+
+void MeshTool::set(const Inkscape::Preferences::Entry& value) {
+ Glib::ustring entry_name = value.getEntryName();
+ if (entry_name == "show_handles") {
+ this->show_handles = value.getBool(true);
+ } else if (entry_name == "edit_fill") {
+ this->edit_fill = value.getBool(true);
+ } else if (entry_name == "edit_stroke") {
+ this->edit_stroke = value.getBool(true);
+ } else {
+ ToolBase::set(value);
+ }
+}
+
+void MeshTool::select_next()
+{
+ g_assert(_grdrag);
+ GrDragger *d = _grdrag->select_next();
+ _desktop->scroll_to_point(d->point);
+}
+
+void MeshTool::select_prev()
+{
+ g_assert(_grdrag);
+ GrDragger *d = _grdrag->select_prev();
+ _desktop->scroll_to_point(d->point);
+}
+
+/**
+ * Returns vector of control curves mouse is over. Returns only first if 'first' is true.
+ * event_p is in canvas (world) units.
+ */
+std::vector<GrDrag::ItemCurve*> MeshTool::over_curve(Geom::Point event_p, bool first)
+{
+ // Translate mouse point into proper coord system: needed later.
+ mousepoint_doc = _desktop->w2d(event_p);
+ std::vector<GrDrag::ItemCurve*> selected;
+
+ for (auto &it : _grdrag->item_curves) {
+ if (it.curve->contains(event_p, tolerance)) {
+ selected.emplace_back(&it);
+ if (first) {
+ break;
+ }
+ }
+ }
+ return selected;
+}
+
+/**
+Split row/column near the mouse point.
+*/
+void MeshTool::split_near_point(SPItem *item, Geom::Point mouse_p, guint32 /*etime*/)
+{
+#ifdef DEBUG_MESH
+ std::cout << "split_near_point: entrance: " << mouse_p << std::endl;
+#endif
+
+ // item is the selected item. mouse_p the location in doc coordinates of where to add the stop
+ get_drag()->addStopNearPoint(item, mouse_p, tolerance / _desktop->current_zoom());
+ DocumentUndo::done(_desktop->getDocument(), _("Split mesh row/column"), INKSCAPE_ICON("mesh-gradient"));
+ get_drag()->updateDraggers();
+}
+
+/**
+Wrapper for various mesh operations that require a list of selected corner nodes.
+ */
+void MeshTool::corner_operation(MeshCornerOperation operation)
+{
+
+#ifdef DEBUG_MESH
+ std::cout << "sp_mesh_corner_operation: entrance: " << operation << std::endl;
+#endif
+
+ SPDocument *doc = nullptr;
+
+ std::map<SPMeshGradient*, std::vector<guint> > points;
+ std::map<SPMeshGradient*, SPItem*> items;
+ std::map<SPMeshGradient*, Inkscape::PaintTarget> fill_or_stroke;
+
+ // Get list of selected draggers for each mesh.
+ // For all selected draggers (a dragger may include draggerables from different meshes).
+ for (auto dragger : _grdrag->selected) {
+ // For all draggables of dragger (a draggable corresponds to a unique mesh).
+ for (auto d : dragger->draggables) {
+ // Only mesh corners
+ if( d->point_type != POINT_MG_CORNER ) continue;
+
+ // Find the gradient
+ auto gradient = cast<SPMeshGradient>( getGradient (d->item, d->fill_or_stroke) );
+
+ // Collect points together for same gradient
+ points[gradient].push_back( d->point_i );
+ items[gradient] = d->item;
+ fill_or_stroke[gradient] = d->fill_or_stroke ? Inkscape::FOR_FILL: Inkscape::FOR_STROKE;
+ }
+ }
+
+ // Loop over meshes.
+ for( std::map<SPMeshGradient*, std::vector<guint> >::const_iterator iter = points.begin(); iter != points.end(); ++iter) {
+ SPMeshGradient *mg = iter->first;
+ if( iter->second.size() > 0 ) {
+ guint noperation = 0;
+ switch (operation) {
+
+ case MG_CORNER_SIDE_TOGGLE:
+ // std::cout << "SIDE_TOGGLE" << std::endl;
+ noperation += mg->array.side_toggle( iter->second );
+ break;
+
+ case MG_CORNER_SIDE_ARC:
+ // std::cout << "SIDE_ARC" << std::endl;
+ noperation += mg->array.side_arc( iter->second );
+ break;
+
+ case MG_CORNER_TENSOR_TOGGLE:
+ // std::cout << "TENSOR_TOGGLE" << std::endl;
+ noperation += mg->array.tensor_toggle( iter->second );
+ break;
+
+ case MG_CORNER_COLOR_SMOOTH:
+ // std::cout << "COLOR_SMOOTH" << std::endl;
+ noperation += mg->array.color_smooth( iter->second );
+ break;
+
+ case MG_CORNER_COLOR_PICK:
+ // std::cout << "COLOR_PICK" << std::endl;
+ noperation += mg->array.color_pick( iter->second, items[iter->first] );
+ break;
+
+ case MG_CORNER_INSERT:
+ // std::cout << "INSERT" << std::endl;
+ noperation += mg->array.insert( iter->second );
+ break;
+
+ default:
+ std::cerr << "sp_mesh_corner_operation: unknown operation" << std::endl;
+ }
+
+ if( noperation > 0 ) {
+ mg->array.write( mg );
+ mg->requestModified(SP_OBJECT_MODIFIED_FLAG);
+ doc = mg->document;
+
+ switch (operation) {
+
+ case MG_CORNER_SIDE_TOGGLE:
+ DocumentUndo::done(doc, _("Toggled mesh path type."), INKSCAPE_ICON("mesh-gradient"));
+ _grdrag->local_change = true; // Don't create new draggers.
+ break;
+
+ case MG_CORNER_SIDE_ARC:
+ DocumentUndo::done(doc, _("Approximated arc for mesh side."), INKSCAPE_ICON("mesh-gradient"));
+ _grdrag->local_change = true; // Don't create new draggers.
+ break;
+
+ case MG_CORNER_TENSOR_TOGGLE:
+ DocumentUndo::done(doc, _("Toggled mesh tensors."), INKSCAPE_ICON("mesh-gradient"));
+ _grdrag->local_change = true; // Don't create new draggers.
+ break;
+
+ case MG_CORNER_COLOR_SMOOTH:
+ DocumentUndo::done(doc, _("Smoothed mesh corner color."), INKSCAPE_ICON("mesh-gradient"));
+ _grdrag->local_change = true; // Don't create new draggers.
+ break;
+
+ case MG_CORNER_COLOR_PICK:
+ DocumentUndo::done(doc, _("Picked mesh corner color."), INKSCAPE_ICON("mesh-gradient"));
+ _grdrag->local_change = true; // Don't create new draggers.
+ break;
+
+ case MG_CORNER_INSERT:
+ DocumentUndo::done(doc, _("Inserted new row or column."), INKSCAPE_ICON("mesh-gradient"));
+ break;
+
+ default:
+ std::cerr << "sp_mesh_corner_operation: unknown operation" << std::endl;
+ }
+ }
+ }
+ }
+}
+
+
+/**
+ * Scale mesh to just fit into bbox of selected items.
+ */
+void MeshTool::fit_mesh_in_bbox()
+{
+
+#ifdef DEBUG_MESH
+ std::cout << "fit_mesh_in_bbox: entrance: Entrance" << std::endl;
+#endif
+
+ Inkscape::Selection *selection = _desktop->getSelection();
+ if (selection == nullptr) {
+ return;
+ }
+
+ bool changed = false;
+ auto itemlist = selection->items();
+ for (auto i=itemlist.begin(); i!=itemlist.end(); ++i) {
+
+ SPItem *item = *i;
+ SPStyle *style = item->style;
+
+ if (style) {
+
+ if (style->fill.isPaintserver()) {
+ SPPaintServer *server = item->style->getFillPaintServer();
+ if ( is<SPMeshGradient>(server) ) {
+
+ Geom::OptRect item_bbox = item->geometricBounds();
+ auto gradient = cast<SPMeshGradient>(server);
+ if (gradient->array.fill_box( item_bbox )) {
+ changed = true;
+ }
+ }
+ }
+
+ if (style->stroke.isPaintserver()) {
+ SPPaintServer *server = item->style->getStrokePaintServer();
+ if ( is<SPMeshGradient>(server) ) {
+
+ Geom::OptRect item_bbox = item->visualBounds();
+ auto gradient = cast<SPMeshGradient>(server);
+ if (gradient->array.fill_box( item_bbox )) {
+ changed = true;
+ }
+ }
+ }
+
+ }
+ }
+ if (changed) {
+ DocumentUndo::done(_desktop->getDocument(), _("Fit mesh inside bounding box"), INKSCAPE_ICON("mesh-gradient"));
+ }
+}
+
+
+/**
+Handles all keyboard and mouse input for meshs.
+Note: node/handle events are take care of elsewhere.
+*/
+bool MeshTool::root_handler(GdkEvent* event) {
+ static bool dragging;
+
+ Inkscape::Selection *selection = _desktop->getSelection();
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+ this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+ // Get value of fill or stroke preference
+ Inkscape::PaintTarget fill_or_stroke_pref =
+ static_cast<Inkscape::PaintTarget>(prefs->getInt("/tools/mesh/newfillorstroke"));
+
+ g_assert(_grdrag);
+ gint ret = FALSE;
+
+ switch (event->type) {
+ case GDK_2BUTTON_PRESS:
+
+#ifdef DEBUG_MESH
+ std::cout << "root_handler: GDK_2BUTTON_PRESS" << std::endl;
+#endif
+
+ // Double click:
+ // If over a mesh line, divide mesh row/column
+ // If not over a line and no mesh, create new mesh for top selected object.
+
+ if ( event->button.button == 1 ) {
+
+ // Are we over a mesh line? (Should replace by CanvasItem event.)
+ auto over_curve = this->over_curve(Geom::Point(event->motion.x, event->motion.y));
+
+ if (!over_curve.empty()) {
+ // We take the first item in selection, because with doubleclick, the first click
+ // always resets selection to the single object under cursor
+ split_near_point(selection->items().front(), this->mousepoint_doc, event->button.time);
+ } else {
+ // Create a new gradient with default coordinates.
+
+ // Check if object already has mesh... if it does,
+ // don't create new mesh with click-drag.
+ bool has_mesh = false;
+ if (!selection->isEmpty()) {
+ SPStyle *style = selection->items().front()->style;
+ if (style) {
+ SPPaintServer *server =
+ (fill_or_stroke_pref == Inkscape::FOR_FILL) ?
+ style->getFillPaintServer():
+ style->getStrokePaintServer();
+ if (server && is<SPMeshGradient>(server))
+ has_mesh = true;
+ }
+ }
+
+ if (!has_mesh) {
+ new_default();
+ }
+ }
+
+ ret = TRUE;
+ }
+ break;
+
+ case GDK_BUTTON_PRESS:
+
+#ifdef DEBUG_MESH
+ std::cout << "root_handler: GDK_BUTTON_PRESS" << std::endl;
+#endif
+
+ // Button down
+ // If mesh already exists, do rubber band selection.
+ // Else set origin for drag which will create a new gradient.
+ if ( event->button.button == 1 ) {
+
+ // Are we over a mesh curve?
+ auto over_curve = this->over_curve(Geom::Point(event->motion.x, event->motion.y), false);
+
+ if (!over_curve.empty()) {
+ for (auto it : over_curve) {
+ Inkscape::PaintTarget fill_or_stroke = it->is_fill ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE;
+ GrDragger *dragger0 = _grdrag->getDraggerFor(it->item, POINT_MG_CORNER, it->corner0, fill_or_stroke);
+ GrDragger *dragger1 = _grdrag->getDraggerFor(it->item, POINT_MG_CORNER, it->corner1, fill_or_stroke);
+ bool add = (event->button.state & GDK_SHIFT_MASK);
+ bool toggle = (event->button.state & GDK_CONTROL_MASK);
+ if ( !add && !toggle ) {
+ _grdrag->deselectAll();
+ }
+ _grdrag->setSelected( dragger0, true, !toggle );
+ _grdrag->setSelected( dragger1, true, !toggle );
+ }
+ ret = true;
+ break; // To avoid putting the following code in an else block.
+ }
+
+ Geom::Point button_w(event->button.x, event->button.y);
+
+ // save drag origin
+ this->xp = (gint) button_w[Geom::X];
+ this->yp = (gint) button_w[Geom::Y];
+ this->within_tolerance = true;
+
+ dragging = true;
+
+ Geom::Point button_dt = _desktop->w2d(button_w);
+ // Check if object already has mesh... if it does,
+ // don't create new mesh with click-drag.
+ bool has_mesh = false;
+ if (!selection->isEmpty()) {
+ SPStyle *style = selection->items().front()->style;
+ if (style) {
+ SPPaintServer *server =
+ (fill_or_stroke_pref == Inkscape::FOR_FILL) ?
+ style->getFillPaintServer():
+ style->getStrokePaintServer();
+ if (server && is<SPMeshGradient>(server))
+ has_mesh = true;
+ }
+ }
+
+ if (has_mesh && !(event->button.state & GDK_CONTROL_MASK)) {
+ Inkscape::Rubberband::get(_desktop)->start(_desktop, button_dt);
+ }
+
+ // remember clicked item, disregarding groups, honoring Alt; do nothing with Crtl to
+ // enable Ctrl+doubleclick of exactly the selected item(s)
+ if (!(event->button.state & GDK_CONTROL_MASK)) {
+ this->item_to_select = sp_event_context_find_item (_desktop, button_w, event->button.state & GDK_MOD1_MASK, TRUE);
+ }
+
+ if (!selection->isEmpty()) {
+ SnapManager &m = _desktop->namedview->snap_manager;
+ m.setup(_desktop);
+ m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
+ m.unSetup();
+ }
+
+ this->origin = button_dt;
+
+ ret = TRUE;
+ }
+ break;
+
+ case GDK_MOTION_NOTIFY:
+ // Mouse move
+ if ( dragging && ( event->motion.state & GDK_BUTTON1_MASK ) ) {
+
+#ifdef DEBUG_MESH
+ std::cout << "root_handler: GDK_MOTION_NOTIFY: Dragging" << std::endl;
+#endif
+ if ( this->within_tolerance
+ && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+ && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+ break; // do not drag if we're within tolerance from origin
+ }
+ // Once the user has moved farther than tolerance from the original location
+ // (indicating they intend to draw, not click), then always process the
+ // motion notify coordinates as given (no snapping back to origin)
+ this->within_tolerance = false;
+
+ Geom::Point const motion_w(event->motion.x,
+ event->motion.y);
+ Geom::Point const motion_dt = _desktop->w2d(motion_w);
+
+ if (Inkscape::Rubberband::get(_desktop)->is_started()) {
+ Inkscape::Rubberband::get(_desktop)->move(motion_dt);
+ this->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw around</b> handles to select them"));
+ } else {
+ // Do nothing. For a linear/radial gradient we follow the drag, updating the
+ // gradient as the end node is dragged. For a mesh gradient, the gradient is always
+ // created to fill the object when the drag ends.
+ }
+
+ gobble_motion_events(GDK_BUTTON1_MASK);
+
+ ret = TRUE;
+ } else {
+ // Not dragging
+
+ // Do snapping
+ if (!_grdrag->mouseOver() && !selection->isEmpty()) {
+ SnapManager &m = _desktop->namedview->snap_manager;
+ m.setup(_desktop);
+
+ Geom::Point const motion_w(event->motion.x, event->motion.y);
+ Geom::Point const motion_dt = _desktop->w2d(motion_w);
+
+ m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_OTHER_HANDLE));
+ m.unSetup();
+ }
+
+ // Highlight corner node corresponding to side or tensor node
+ if (_grdrag->mouseOver()) {
+ // MESH FIXME: Light up corresponding corner node corresponding to node we are over.
+ // See "pathflash" in ui/tools/node-tool.cpp for ideas.
+ // Use _desktop->add_temporary_canvasitem( SPCanvasItem, milliseconds );
+ }
+
+ // Change cursor shape if over line
+ auto over_curve = this->over_curve(Geom::Point(event->motion.x, event->motion.y));
+
+ if (this->cursor_addnode && over_curve.empty()) {
+ this->set_cursor("mesh.svg");
+ this->cursor_addnode = false;
+ } else if (!this->cursor_addnode && !over_curve.empty()) {
+ this->set_cursor("mesh-add.svg");
+ this->cursor_addnode = true;
+ }
+ }
+ break;
+
+ case GDK_BUTTON_RELEASE:
+
+#ifdef DEBUG_MESH
+ std::cout << "root_handler: GDK_BUTTON_RELEASE" << std::endl;
+#endif
+
+ this->xp = this->yp = 0;
+
+ if ( event->button.button == 1 ) {
+
+ // Check if over line
+ auto over_curve = this->over_curve(Geom::Point(event->motion.x, event->motion.y));
+
+ if ( (event->button.state & GDK_CONTROL_MASK) && (event->button.state & GDK_MOD1_MASK ) ) {
+ if (!over_curve.empty()) {
+ split_near_point(over_curve[0]->item, mousepoint_doc, 0);
+ ret = TRUE;
+ }
+ } else {
+ dragging = false;
+
+ // unless clicked with Ctrl (to enable Ctrl+doubleclick).
+ if (event->button.state & GDK_CONTROL_MASK && !(event->button.state & GDK_SHIFT_MASK)) {
+ ret = TRUE;
+ Inkscape::Rubberband::get(_desktop)->stop();
+ break;
+ }
+
+ if (!this->within_tolerance) {
+
+ // Check if object already has mesh... if it does,
+ // don't create new mesh with click-drag.
+ bool has_mesh = false;
+ if (!selection->isEmpty()) {
+ SPStyle *style = selection->items().front()->style;
+ if (style) {
+ SPPaintServer *server =
+ (fill_or_stroke_pref == Inkscape::FOR_FILL) ?
+ style->getFillPaintServer():
+ style->getStrokePaintServer();
+ if (server && is<SPMeshGradient>(server))
+ has_mesh = true;
+ }
+ }
+
+ if (!has_mesh) {
+ new_default();
+ } else {
+
+ // we've been dragging, either create a new gradient
+ // or rubberband-select if we have rubberband
+ Inkscape::Rubberband *r = Inkscape::Rubberband::get(_desktop);
+
+ if (r->is_started() && !this->within_tolerance) {
+ // this was a rubberband drag
+ if (r->getMode() == RUBBERBAND_MODE_RECT) {
+ Geom::OptRect const b = r->getRectangle();
+ if (!(event->button.state & GDK_SHIFT_MASK)) {
+ _grdrag->deselectAll();
+ }
+ _grdrag->selectRect(*b);
+ }
+ }
+ }
+
+ } else if (this->item_to_select) {
+ if (!over_curve.empty()) {
+ // Clicked on an existing mesh line, don't change selection. This stops
+ // possible change in selection during a double click with overlapping objects
+ } else {
+ // no dragging, select clicked item if any
+ if (event->button.state & GDK_SHIFT_MASK) {
+ selection->toggle(this->item_to_select);
+ } else {
+ _grdrag->deselectAll();
+ selection->set(this->item_to_select);
+ }
+ }
+ } else {
+ if (!over_curve.empty()) {
+ // Clicked on an existing mesh line, don't change selection. This stops
+ // possible change in selection during a double click with overlapping objects
+ } else {
+ // click in an empty space; do the same as Esc
+ if (!_grdrag->selected.empty()) {
+ _grdrag->deselectAll();
+ } else {
+ selection->clear();
+ }
+ }
+ }
+
+ this->item_to_select = nullptr;
+ ret = TRUE;
+ }
+ Inkscape::Rubberband::get(_desktop)->stop();
+ }
+ break;
+
+ case GDK_KEY_PRESS:
+
+#ifdef DEBUG_MESH
+ std::cout << "root_handler: GDK_KEY_PRESS" << std::endl;
+#endif
+
+ // FIXME: tip
+ switch (get_latin_keyval (&event->key)) {
+ case GDK_KEY_Alt_L:
+ case GDK_KEY_Alt_R:
+ case GDK_KEY_Control_L:
+ case GDK_KEY_Control_R:
+ case GDK_KEY_Shift_L:
+ case GDK_KEY_Shift_R:
+ case GDK_KEY_Meta_L: // Meta is when you press Shift+Alt (at least on my machine)
+ case GDK_KEY_Meta_R:
+
+ // sp_event_show_modifier_tip (this->defaultMessageContext(), event,
+ // _("FIXME<b>Ctrl</b>: snap mesh angle"),
+ // _("FIXME<b>Shift</b>: draw mesh around the starting point"),
+ // NULL);
+ break;
+
+ case GDK_KEY_A:
+ case GDK_KEY_a:
+ if (MOD__CTRL_ONLY(event) && _grdrag->isNonEmpty()) {
+ _grdrag->selectAll();
+ ret = TRUE;
+ }
+ break;
+
+ case GDK_KEY_Escape:
+ if (!_grdrag->selected.empty()) {
+ _grdrag->deselectAll();
+ } else {
+ selection->clear();
+ }
+
+ ret = TRUE;
+ //TODO: make dragging escapable by Esc
+ break;
+
+ // Mesh Operations --------------------------------------------
+
+ case GDK_KEY_Insert:
+ case GDK_KEY_KP_Insert:
+ // with any modifiers:
+ this->corner_operation(MG_CORNER_INSERT);
+ ret = TRUE;
+ break;
+
+ case GDK_KEY_i:
+ case GDK_KEY_I:
+ if (MOD__SHIFT_ONLY(event)) {
+ // Shift+I - insert corners (alternate keybinding for keyboards
+ // that don't have the Insert key)
+ this->corner_operation(MG_CORNER_INSERT);
+ ret = TRUE;
+ }
+ break;
+
+ case GDK_KEY_Delete:
+ case GDK_KEY_KP_Delete:
+ case GDK_KEY_BackSpace:
+ if (!_grdrag->selected.empty()) {
+ ret = TRUE;
+ }
+ break;
+
+ case GDK_KEY_b: // Toggle mesh side between lineto and curveto.
+ case GDK_KEY_B:
+ if (MOD__ALT(event) && _grdrag->isNonEmpty() && _grdrag->hasSelection()) {
+ this->corner_operation(MG_CORNER_SIDE_TOGGLE);
+ ret = TRUE;
+ }
+ break;
+
+ case GDK_KEY_c: // Convert mesh side from generic Bezier to Bezier approximating arc,
+ case GDK_KEY_C: // preserving handle direction.
+ if (MOD__ALT(event) && _grdrag->isNonEmpty() && _grdrag->hasSelection()) {
+ this->corner_operation(MG_CORNER_SIDE_ARC);
+ ret = TRUE;
+ }
+ break;
+
+ case GDK_KEY_g: // Toggle mesh tensor points on/off
+ case GDK_KEY_G:
+ if (MOD__ALT(event) && _grdrag->isNonEmpty() && _grdrag->hasSelection()) {
+ this->corner_operation(MG_CORNER_TENSOR_TOGGLE);
+ ret = TRUE;
+ }
+ break;
+
+ case GDK_KEY_j: // Smooth corner color
+ case GDK_KEY_J:
+ if (MOD__ALT(event) && _grdrag->isNonEmpty() && _grdrag->hasSelection()) {
+ this->corner_operation(MG_CORNER_COLOR_SMOOTH);
+ ret = TRUE;
+ }
+ break;
+
+ case GDK_KEY_k: // Pick corner color
+ case GDK_KEY_K:
+ if (MOD__ALT(event) && _grdrag->isNonEmpty() && _grdrag->hasSelection()) {
+ this->corner_operation(MG_CORNER_COLOR_PICK);
+ ret = TRUE;
+ }
+ break;
+
+ default:
+ ret = _grdrag->key_press_handler(event);
+ break;
+ }
+
+ break;
+
+ case GDK_KEY_RELEASE:
+
+#ifdef DEBUG_MESH
+ std::cout << "root_handler: GDK_KEY_RELEASE" << std::endl;
+#endif
+ switch (get_latin_keyval (&event->key)) {
+ case GDK_KEY_Alt_L:
+ case GDK_KEY_Alt_R:
+ case GDK_KEY_Control_L:
+ case GDK_KEY_Control_R:
+ case GDK_KEY_Shift_L:
+ case GDK_KEY_Shift_R:
+ case GDK_KEY_Meta_L: // Meta is when you press Shift+Alt
+ case GDK_KEY_Meta_R:
+ this->defaultMessageContext()->clear();
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+
+ if (!ret) {
+ ret = ToolBase::root_handler(event);
+ }
+
+ return ret;
+}
+
+// Creates a new mesh gradient.
+void MeshTool::new_default()
+{
+ Inkscape::Selection *selection = _desktop->getSelection();
+ SPDocument *document = _desktop->getDocument();
+
+ if (!selection->isEmpty()) {
+
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ Inkscape::PaintTarget fill_or_stroke_pref =
+ static_cast<Inkscape::PaintTarget>(prefs->getInt("/tools/mesh/newfillorstroke"));
+
+ // Ensure mesh is immediately editable.
+ // Editing both fill and stroke at same time doesn't work well so avoid.
+ if (fill_or_stroke_pref == Inkscape::FOR_FILL) {
+ prefs->setBool("/tools/mesh/edit_fill", true );
+ prefs->setBool("/tools/mesh/edit_stroke", false);
+ } else {
+ prefs->setBool("/tools/mesh/edit_fill", false);
+ prefs->setBool("/tools/mesh/edit_stroke", true );
+ }
+
+// HACK: reset fill-opacity - that 0.75 is annoying; BUT remove this when we have an opacity slider for all tabs
+ SPCSSAttr *css = sp_repr_css_attr_new();
+ sp_repr_css_set_property(css, "fill-opacity", "1.0");
+
+ Inkscape::XML::Document *xml_doc = document->getReprDoc();
+ SPDefs *defs = document->getDefs();
+
+ auto items= selection->items();
+ for(auto i=items.begin();i!=items.end();++i){
+
+ //FIXME: see above
+ sp_repr_css_change_recursive((*i)->getRepr(), css, "style");
+
+ // Create mesh element
+ Inkscape::XML::Node *repr = xml_doc->createElement("svg:meshgradient");
+
+ // privates are garbage-collectable
+ repr->setAttribute("inkscape:collect", "always");
+
+ // Attach to document
+ defs->getRepr()->appendChild(repr);
+ Inkscape::GC::release(repr);
+
+ // Get corresponding object
+ SPMeshGradient *mg = static_cast<SPMeshGradient *>(document->getObjectByRepr(repr));
+ mg->array.create(mg, *i, (fill_or_stroke_pref == Inkscape::FOR_FILL) ?
+ (*i)->geometricBounds() : (*i)->visualBounds());
+
+ bool isText = is<SPText>(*i);
+ sp_style_set_property_url(*i,
+ ((fill_or_stroke_pref == Inkscape::FOR_FILL) ? "fill":"stroke"),
+ mg, isText);
+
+ (*i)->requestModified(SP_OBJECT_MODIFIED_FLAG|SP_OBJECT_STYLE_MODIFIED_FLAG);
+ }
+
+ if (css) {
+ sp_repr_css_attr_unref(css);
+ css = nullptr;
+ }
+
+ DocumentUndo::done(_desktop->getDocument(), _("Create mesh"), INKSCAPE_ICON("mesh-gradient"));
+
+ // status text; we do not track coords because this branch is run once, not all the time
+ // during drag
+ int n_objects = (int) boost::distance(selection->items());
+ message_context->setF(Inkscape::NORMAL_MESSAGE,
+ ngettext("<b>Gradient</b> for %d object; with <b>Ctrl</b> to snap angle",
+ "<b>Gradient</b> for %d objects; with <b>Ctrl</b> to snap angle", n_objects),
+ n_objects);
+ } else {
+ _desktop->getMessageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>objects</b> on which to create gradient."));
+ }
+}
+
+}
+}
+}
+
+/*
+ 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:fileencoding=utf-8:textwidth=99 :