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Diffstat (limited to 'src/ui/tools/mesh-tool.cpp')
| -rw-r--r-- | src/ui/tools/mesh-tool.cpp | 1098 |
1 files changed, 1098 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..e7f2444 --- /dev/null +++ b/src/ui/tools/mesh-tool.cpp @@ -0,0 +1,1098 @@ +// 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 + + +// 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 "verbs.h" + +#include "display/sp-ctrlcurve.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/pixmaps/cursor-gradient.xpm" +#include "ui/pixmaps/cursor-gradient-add.xpm" + +#include "ui/control-manager.h" +#include "ui/tools/mesh-tool.h" + + +using Inkscape::DocumentUndo; + +namespace Inkscape { +namespace UI { +namespace Tools { + +static void sp_mesh_new_default(MeshTool &rc); + +const std::string& MeshTool::getPrefsPath() { + return MeshTool::prefsPath; +} + +const std::string MeshTool::prefsPath = "/tools/mesh"; + +// TODO: The gradient tool class looks like a 1:1 copy. + +MeshTool::MeshTool() + : ToolBase(cursor_gradient_xpm) +// TODO: Why are these connections stored as pointers? + , selcon(nullptr) + , subselcon(nullptr) + , cursor_addnode(false) + , node_added(false) + , show_handles(true) + , edit_fill(true) + , edit_stroke(true) +{ + // TODO: This value is overwritten in the root handler + this->tolerance = 6; +} + +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*/) { + GrDrag *drag = this->_grdrag; + Inkscape::Selection *selection = this->desktop->getSelection(); + + if (selection == nullptr) { + return; + } + + guint n_obj = (guint) boost::distance(selection->items()); + + if (!drag->isNonEmpty() || selection->isEmpty()) { + return; + } + + guint n_tot = drag->numDraggers(); + guint n_sel = drag->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 (drag->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),NULL); + this->message_context->setF(Inkscape::NORMAL_MESSAGE, + message,_(ms_handle_descr[drag->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", + drag->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),NULL); + this->message_context->setF(Inkscape::NORMAL_MESSAGE,message,drag->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),NULL); + 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::setup() { + ToolBase::setup(); + + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + if (prefs->getBool("/tools/mesh/selcue", true)) { + this->enableSelectionCue(); + } + + this->enableGrDrag(); + Inkscape::Selection *selection = this->desktop->getSelection(); + + this->selcon = new sigc::connection(selection->connectChanged( + sigc::mem_fun(this, &MeshTool::selection_changed) + )); + + this->subselcon = new sigc::connection(this->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); + +} + +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 +sp_mesh_context_select_next (ToolBase *event_context) +{ + GrDrag *drag = event_context->_grdrag; + g_assert (drag); + + GrDragger *d = drag->select_next(); + + event_context->desktop->scroll_to_point(d->point, 1.0); +} + +void +sp_mesh_context_select_prev (ToolBase *event_context) +{ + GrDrag *drag = event_context->_grdrag; + g_assert (drag); + + GrDragger *d = drag->select_prev(); + + event_context->desktop->scroll_to_point(d->point, 1.0); +} + +/** +Returns vector of control lines mouse is over. Returns only first if 'first' is true. +*/ +static std::vector<SPCtrlCurve *> +sp_mesh_context_over_line (MeshTool *rc, Geom::Point event_p, bool first = true) +{ + SPDesktop *desktop = SP_EVENT_CONTEXT (rc)->desktop; + + //Translate mouse point into proper coord system + rc->mousepoint_doc = desktop->w2d(event_p); + + double tolerance = (double) SP_EVENT_CONTEXT(rc)->tolerance; + + GrDrag *drag = rc->_grdrag; + + std::vector<SPCtrlCurve *> selected; + + for (std::vector<SPCtrlLine *>::const_iterator l = drag->lines.begin(); l != drag->lines.end(); ++l) { + if (!SP_IS_CTRLCURVE(*l)) continue; + + SPCtrlCurve *curve = SP_CTRLCURVE(*l); + Geom::BezierCurveN<3> b( curve->p0, curve->p1, curve->p2, curve->p3 ); + Geom::Coord coord = b.nearestTime( rc->mousepoint_doc ); // Coord == double + Geom::Point nearest = b( coord ); + + double dist_screen = Geom::L2 (rc->mousepoint_doc - nearest) * desktop->current_zoom(); + if (dist_screen < tolerance) { + selected.push_back(curve); + if (first) { + break; + } + } + } + return selected; +} + + +/** +Split row/column near the mouse point. +*/ +static void sp_mesh_context_split_near_point(MeshTool *rc, SPItem *item, Geom::Point mouse_p, guint32 /*etime*/) +{ + +#ifdef DEBUG_MESH + std::cout << "sp_mesh_context_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 + + ToolBase *ec = SP_EVENT_CONTEXT(rc); + SPDesktop *desktop = SP_EVENT_CONTEXT (rc)->desktop; + + double tolerance = (double) ec->tolerance; + + ec->get_drag()->addStopNearPoint (item, mouse_p, tolerance/desktop->current_zoom()); + + DocumentUndo::done(desktop->getDocument(), SP_VERB_CONTEXT_MESH, + _("Split mesh row/column")); + + ec->get_drag()->updateDraggers(); +} + +/** +Wrapper for various mesh operations that require a list of selected corner nodes. + */ +void +sp_mesh_context_corner_operation (MeshTool *rc, MeshCornerOperation operation ) +{ + +#ifdef DEBUG_MESH + std::cout << "sp_mesh_corner_operation: entrance: " << operation << std::endl; +#endif + + SPDocument *doc = nullptr; + GrDrag *drag = rc->_grdrag; + + 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 : drag->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 + SPMeshGradient *gradient = SP_MESHGRADIENT( 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 = SP_MESHGRADIENT( 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::cout << "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, SP_VERB_CONTEXT_MESH, _("Toggled mesh path type.")); + drag->local_change = true; // Don't create new draggers. + break; + + case MG_CORNER_SIDE_ARC: + DocumentUndo::done(doc, SP_VERB_CONTEXT_MESH, _("Approximated arc for mesh side.")); + drag->local_change = true; // Don't create new draggers. + break; + + case MG_CORNER_TENSOR_TOGGLE: + DocumentUndo::done(doc, SP_VERB_CONTEXT_MESH, _("Toggled mesh tensors.")); + drag->local_change = true; // Don't create new draggers. + break; + + case MG_CORNER_COLOR_SMOOTH: + DocumentUndo::done(doc, SP_VERB_CONTEXT_MESH, _("Smoothed mesh corner color.")); + drag->local_change = true; // Don't create new draggers. + break; + + case MG_CORNER_COLOR_PICK: + DocumentUndo::done(doc, SP_VERB_CONTEXT_MESH, _("Picked mesh corner color.")); + drag->local_change = true; // Don't create new draggers. + break; + + case MG_CORNER_INSERT: + DocumentUndo::done(doc, SP_VERB_CONTEXT_MESH, _("Inserted new row or column.")); + break; + + default: + std::cout << "sp_mesh_corner_operation: unknown operation" << std::endl; + } + } + } + } + + // Not needed. Update is done via gr_drag_sel_modified(). + // drag->updateDraggers(); + +} + + +/** + * Scale mesh to just fit into bbox of selected items. + */ +void +sp_mesh_context_fit_mesh_in_bbox (MeshTool *rc) +{ + +#ifdef DEBUG_MESH + std::cout << "sp_mesh_context_fit_mesh_in_bbox: entrance: Entrance"<< std::endl; +#endif + + SPDesktop *desktop = SP_EVENT_CONTEXT (rc)->desktop; + + 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 ( SP_IS_MESHGRADIENT(server) ) { + + Geom::OptRect item_bbox = item->geometricBounds(); + SPMeshGradient *gradient = SP_MESHGRADIENT(server); + if (gradient->array.fill_box( item_bbox )) { + changed = true; + } + } + } + + if (style->stroke.isPaintserver()) { + SPPaintServer *server = item->style->getStrokePaintServer(); + if ( SP_IS_MESHGRADIENT(server) ) { + + Geom::OptRect item_bbox = item->visualBounds(); + SPMeshGradient *gradient = SP_MESHGRADIENT(server); + if (gradient->array.fill_box( item_bbox )) { + changed = true; + } + } + } + + } + } + if (changed) { + DocumentUndo::done(desktop->getDocument(), SP_VERB_CONTEXT_MESH, + _("Fit mesh inside bounding box.")); + } +} + + +/** +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); + double const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000, "px"); // in px + + // Get value of fill or stroke preference + Inkscape::PaintTarget fill_or_stroke_pref = + static_cast<Inkscape::PaintTarget>(prefs->getInt("/tools/mesh/newfillorstroke")); + + GrDrag *drag = this->_grdrag; + g_assert (drag); + + gint ret = FALSE; + + auto move_handle = [&](int x_dir, int y_dir) { + gint mul = 1 + gobble_key_events(get_latin_keyval(&event->key), 0); // with any mask + + if (MOD__SHIFT(event)) { + mul *= 10; + } + + y_dir *= -desktop->yaxisdir(); + + if (MOD__ALT(event)) { + drag->selected_move_screen(mul * x_dir, mul * y_dir); + } else { + mul *= nudge; + drag->selected_move(mul * x_dir, mul * y_dir); + } + }; + + switch (event->type) { + case GDK_2BUTTON_PRESS: + +#ifdef DEBUG_MESH + std::cout << "sp_mesh_context_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? + std::vector<SPCtrlCurve *> over_line = + sp_mesh_context_over_line(this, Geom::Point(event->motion.x, event->motion.y)); + + if (!over_line.empty()) { + // We take the first item in selection, because with doubleclick, the first click + // always resets selection to the single object under cursor + sp_mesh_context_split_near_point(this, 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 && SP_IS_MESHGRADIENT(server)) + has_mesh = true; + } + } + + if (!has_mesh) { + sp_mesh_new_default(*this); + } + } + + ret = TRUE; + } + break; + + case GDK_BUTTON_PRESS: + +#ifdef DEBUG_MESH + std::cout << "sp_mesh_context_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 && !this->space_panning ) { + + // Are we over a mesh line? + std::vector<SPCtrlCurve *> over_line = + sp_mesh_context_over_line(this, Geom::Point(event->motion.x, event->motion.y), false); + + if (!over_line.empty()) { + for (auto it : over_line) { + SPItem *item = it->item; + Inkscape::PaintTarget fill_or_stroke = + it->is_fill ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE; + GrDragger* dragger0 = drag->getDraggerFor(item, POINT_MG_CORNER, it->corner0, fill_or_stroke); + GrDragger* dragger1 = drag->getDraggerFor(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 ) { + drag->deselectAll(); + } + drag->setSelected( dragger0, true, !toggle ); + drag->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 && SP_IS_MESHGRADIENT(server)) + has_mesh = true; + } + } + + if (has_mesh) { + 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 ) && !this->space_panning ) { + +#ifdef DEBUG_MESH + std::cout << "sp_mesh_context_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 = this->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 (!drag->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 = this->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( drag->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 + std::vector<SPCtrlCurve *> over_line = + sp_mesh_context_over_line(this, Geom::Point(event->motion.x, event->motion.y)); + + if (this->cursor_addnode && over_line.empty()) { + this->cursor_shape = cursor_gradient_xpm; + this->sp_event_context_update_cursor(); + this->cursor_addnode = false; + } else if (!this->cursor_addnode && !over_line.empty()) { + this->cursor_shape = cursor_gradient_add_xpm; + this->sp_event_context_update_cursor(); + this->cursor_addnode = true; + } + } + break; + + case GDK_BUTTON_RELEASE: + +#ifdef DEBUG_MESH + std::cout << "sp_mesh_context_root_handler: GDK_BUTTON_RELEASE" << std::endl; +#endif + + this->xp = this->yp = 0; + + if ( event->button.button == 1 && !this->space_panning ) { + + // Check if over line + std::vector<SPCtrlCurve *> over_line = + sp_mesh_context_over_line(this, Geom::Point(event->motion.x, event->motion.y)); + + if ( (event->button.state & GDK_CONTROL_MASK) && (event->button.state & GDK_MOD1_MASK ) ) { + if (!over_line.empty()) { + sp_mesh_context_split_near_point(this, over_line[0]->item, + this->mousepoint_doc, 0); + ret = TRUE; + } + } else { + dragging = false; + + // unless clicked with Ctrl (to enable Ctrl+doubleclick). + if (event->button.state & GDK_CONTROL_MASK) { + ret = TRUE; + 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 && SP_IS_MESHGRADIENT(server)) + has_mesh = true; + } + } + + if (!has_mesh) { + sp_mesh_new_default(*this); + } 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)) { + drag->deselectAll(); + } + drag->selectRect(*b); + } + } + } + + } else if (this->item_to_select) { + if (!over_line.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 { + drag->deselectAll(); + selection->set(this->item_to_select); + } + } + } else { + if (!over_line.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 (!drag->selected.empty()) { + drag->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 << "sp_mesh_context_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) && drag->isNonEmpty()) { + drag->selectAll(); + ret = TRUE; + } + break; + + case GDK_KEY_Escape: + if (!drag->selected.empty()) { + drag->deselectAll(); + } else { + selection->clear(); + } + + ret = TRUE; + //TODO: make dragging escapable by Esc + break; + + case GDK_KEY_Left: // move handle left + case GDK_KEY_KP_Left: + case GDK_KEY_KP_4: + if (!MOD__CTRL(event)) { // not ctrl + move_handle(-1, 0); + ret = TRUE; + } + break; + + case GDK_KEY_Up: // move handle up + case GDK_KEY_KP_Up: + case GDK_KEY_KP_8: + if (!MOD__CTRL(event)) { // not ctrl + move_handle(0, 1); + ret = TRUE; + } + break; + + case GDK_KEY_Right: // move handle right + case GDK_KEY_KP_Right: + case GDK_KEY_KP_6: + if (!MOD__CTRL(event)) { // not ctrl + move_handle(1, 0); + ret = TRUE; + } + break; + + case GDK_KEY_Down: // move handle down + case GDK_KEY_KP_Down: + case GDK_KEY_KP_2: + if (!MOD__CTRL(event)) { // not ctrl + move_handle(0, -1); + ret = TRUE; + } + break; + + // Mesh Operations -------------------------------------------- + + case GDK_KEY_Insert: + case GDK_KEY_KP_Insert: + // with any modifiers: + sp_mesh_context_corner_operation ( this, 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) + sp_mesh_context_corner_operation ( this, MG_CORNER_INSERT ); + ret = TRUE; + } + break; + + case GDK_KEY_Delete: + case GDK_KEY_KP_Delete: + case GDK_KEY_BackSpace: + if ( !drag->selected.empty() ) { + ret = TRUE; + } + break; + + case GDK_KEY_b: // Toggle mesh side between lineto and curveto. + case GDK_KEY_B: + if (MOD__ALT(event) && drag->isNonEmpty() && drag->hasSelection()) { + sp_mesh_context_corner_operation ( this, 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) && drag->isNonEmpty() && drag->hasSelection()) { + sp_mesh_context_corner_operation ( this, 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) && drag->isNonEmpty() && drag->hasSelection()) { + sp_mesh_context_corner_operation ( this, MG_CORNER_TENSOR_TOGGLE ); + ret = TRUE; + } + break; + + case GDK_KEY_j: // Smooth corner color + case GDK_KEY_J: + if (MOD__ALT(event) && drag->isNonEmpty() && drag->hasSelection()) { + sp_mesh_context_corner_operation ( this, MG_CORNER_COLOR_SMOOTH ); + ret = TRUE; + } + break; + + case GDK_KEY_k: // Pick corner color + case GDK_KEY_K: + if (MOD__ALT(event) && drag->isNonEmpty() && drag->hasSelection()) { + sp_mesh_context_corner_operation ( this, MG_CORNER_COLOR_PICK ); + ret = TRUE; + } + break; + + default: + break; + } + + break; + + case GDK_KEY_RELEASE: + +#ifdef DEBUG_MESH + std::cout << "sp_mesh_context_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. +static void sp_mesh_new_default(MeshTool &rc) { + SPDesktop *desktop = SP_EVENT_CONTEXT(&rc)->desktop; + 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 = SP_IS_TEXT(*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(), SP_VERB_CONTEXT_MESH, _("Create mesh")); + + // 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()); + rc.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 : |