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Diffstat (limited to 'src/ui/object-edit.cpp')
| -rw-r--r-- | src/ui/object-edit.cpp | 1399 |
1 files changed, 1399 insertions, 0 deletions
diff --git a/src/ui/object-edit.cpp b/src/ui/object-edit.cpp new file mode 100644 index 000000000..cc96727f8 --- /dev/null +++ b/src/ui/object-edit.cpp @@ -0,0 +1,1399 @@ +/* + * Node editing extension to objects + * + * Authors: + * Lauris Kaplinski <lauris@kaplinski.com> + * Mitsuru Oka + * Maximilian Albert <maximilian.albert@gmail.com> + * Abhishek Sharma + * + * Licensed under GNU GPL + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + + + +#include "sp-item.h" +#include "sp-rect.h" +#include "box3d.h" +#include "sp-ellipse.h" +#include "sp-star.h" +#include "sp-spiral.h" +#include "sp-offset.h" +#include "sp-flowtext.h" +#include "preferences.h" +#include "style.h" +#include "desktop.h" +#include "desktop-handles.h" +#include "sp-namedview.h" +#include "live_effects/effect.h" +#include "sp-pattern.h" +#include "sp-path.h" +#include <glibmm/i18n.h> +#include "ui/object-edit.h" +#include "xml/repr.h" +#include <2geom/math-utils.h> +#include "knot-holder-entity.h" + +#define sp_round(v,m) (((v) < 0.0) ? ((ceil((v) / (m) - 0.5)) * (m)) : ((floor((v) / (m) + 0.5)) * (m))) + +namespace { + +static KnotHolder *sp_lpe_knot_holder(SPItem *item, SPDesktop *desktop) +{ + KnotHolder *knot_holder = new KnotHolder(desktop, item, NULL); + + Inkscape::LivePathEffect::Effect *effect = SP_LPE_ITEM(item)->getCurrentLPE(); + effect->addHandles(knot_holder, desktop, item); + + return knot_holder; +} + +} // namespace + +namespace Inkscape { +namespace UI { + +KnotHolder *createKnotHolder(SPItem *item, SPDesktop *desktop) +{ + KnotHolder *knotholder = NULL; + + if (SP_IS_LPE_ITEM(item) && + SP_LPE_ITEM(item)->getCurrentLPE() && + SP_LPE_ITEM(item)->getCurrentLPE()->isVisible() && + SP_LPE_ITEM(item)->getCurrentLPE()->providesKnotholder()) { + knotholder = sp_lpe_knot_holder(item, desktop); + } else if (SP_IS_RECT(item)) { + knotholder = new RectKnotHolder(desktop, item, NULL); + } else if (SP_IS_BOX3D(item)) { + knotholder = new Box3DKnotHolder(desktop, item, NULL); + } else if (SP_IS_GENERICELLIPSE(item)) { + knotholder = new ArcKnotHolder(desktop, item, NULL); + } else if (SP_IS_STAR(item)) { + knotholder = new StarKnotHolder(desktop, item, NULL); + } else if (SP_IS_SPIRAL(item)) { + knotholder = new SpiralKnotHolder(desktop, item, NULL); + } else if (SP_IS_OFFSET(item)) { + knotholder = new OffsetKnotHolder(desktop, item, NULL); + } else if (SP_IS_FLOWTEXT(item) && SP_FLOWTEXT(item)->has_internal_frame()) { + knotholder = new FlowtextKnotHolder(desktop, SP_FLOWTEXT(item)->get_frame(NULL), NULL); + } else if ((item->style->fill.isPaintserver() && SP_IS_PATTERN(item->style->getFillPaintServer())) || + (item->style->stroke.isPaintserver() && SP_IS_PATTERN(item->style->getStrokePaintServer()))) { + knotholder = new KnotHolder(desktop, item, NULL); + knotholder->add_pattern_knotholder(); + } + + return knotholder; +} + +} +} // namespace Inkscape + +/* SPRect */ + +/* handle for horizontal rounding radius */ +class RectKnotHolderEntityRX : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); + virtual void knot_click(unsigned int state); +}; + +/* handle for vertical rounding radius */ +class RectKnotHolderEntityRY : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); + virtual void knot_click(unsigned int state); +}; + +/* handle for width/height adjustment */ +class RectKnotHolderEntityWH : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); + +protected: + void set_internal(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +/* handle for x/y adjustment */ +class RectKnotHolderEntityXY : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +Geom::Point +RectKnotHolderEntityRX::knot_get() const +{ + SPRect *rect = SP_RECT(item); + + return Geom::Point(rect->x.computed + rect->width.computed - rect->rx.computed, rect->y.computed); +} + +void +RectKnotHolderEntityRX::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, unsigned int state) +{ + SPRect *rect = SP_RECT(item); + + //In general we cannot just snap this radius to an arbitrary point, as we have only a single + //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap + //the radius then we should have a constrained snap. snap_knot_position() is unconstrained + Geom::Point const s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(Geom::Point(rect->x.computed + rect->width.computed, rect->y.computed), Geom::Point(-1, 0)), state); + + if (state & GDK_CONTROL_MASK) { + gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0; + rect->rx.computed = rect->ry.computed = CLAMP(rect->x.computed + rect->width.computed - s[Geom::X], 0.0, temp); + rect->rx._set = rect->ry._set = true; + + } else { + rect->rx.computed = CLAMP(rect->x.computed + rect->width.computed - s[Geom::X], 0.0, rect->width.computed / 2.0); + rect->rx._set = true; + } + + update_knot(); + + (static_cast<SPObject*>(rect))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +void +RectKnotHolderEntityRX::knot_click(unsigned int state) +{ + SPRect *rect = SP_RECT(item); + + if (state & GDK_SHIFT_MASK) { + /* remove rounding from rectangle */ + rect->getRepr()->setAttribute("rx", NULL); + rect->getRepr()->setAttribute("ry", NULL); + } else if (state & GDK_CONTROL_MASK) { + /* Ctrl-click sets the vertical rounding to be the same as the horizontal */ + rect->getRepr()->setAttribute("ry", rect->getRepr()->attribute("rx")); + } + +} + +Geom::Point +RectKnotHolderEntityRY::knot_get() const +{ + SPRect *rect = SP_RECT(item); + + return Geom::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->ry.computed); +} + +void +RectKnotHolderEntityRY::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, unsigned int state) +{ + SPRect *rect = SP_RECT(item); + + //In general we cannot just snap this radius to an arbitrary point, as we have only a single + //degree of freedom. For snapping to an arbitrary point we need two DOF. If we're going to snap + //the radius then we should have a constrained snap. snap_knot_position() is unconstrained + Geom::Point const s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(Geom::Point(rect->x.computed + rect->width.computed, rect->y.computed), Geom::Point(0, 1)), state); + + if (state & GDK_CONTROL_MASK) { // When holding control then rx will be kept equal to ry, + // resulting in a perfect circle (and not an ellipse) + gdouble temp = MIN(rect->height.computed, rect->width.computed) / 2.0; + rect->rx.computed = rect->ry.computed = CLAMP(s[Geom::Y] - rect->y.computed, 0.0, temp); + rect->ry._set = rect->rx._set = true; + } else { + if (!rect->rx._set || rect->rx.computed == 0) { + rect->ry.computed = CLAMP(s[Geom::Y] - rect->y.computed, + 0.0, + MIN(rect->height.computed / 2.0, rect->width.computed / 2.0)); + } else { + rect->ry.computed = CLAMP(s[Geom::Y] - rect->y.computed, + 0.0, + rect->height.computed / 2.0); + } + + rect->ry._set = true; + } + + update_knot(); + + (static_cast<SPObject *>(rect))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +void +RectKnotHolderEntityRY::knot_click(unsigned int state) +{ + SPRect *rect = SP_RECT(item); + + if (state & GDK_SHIFT_MASK) { + /* remove rounding */ + rect->getRepr()->setAttribute("rx", NULL); + rect->getRepr()->setAttribute("ry", NULL); + } else if (state & GDK_CONTROL_MASK) { + /* Ctrl-click sets the vertical rounding to be the same as the horizontal */ + rect->getRepr()->setAttribute("rx", rect->getRepr()->attribute("ry")); + } +} + +#define SGN(x) ((x)>0?1:((x)<0?-1:0)) + +static void sp_rect_clamp_radii(SPRect *rect) +{ + // clamp rounding radii so that they do not exceed width/height + if (2 * rect->rx.computed > rect->width.computed) { + rect->rx.computed = 0.5 * rect->width.computed; + rect->rx._set = true; + } + if (2 * rect->ry.computed > rect->height.computed) { + rect->ry.computed = 0.5 * rect->height.computed; + rect->ry._set = true; + } +} + +Geom::Point +RectKnotHolderEntityWH::knot_get() const +{ + SPRect *rect = SP_RECT(item); + + return Geom::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed); +} + +void +RectKnotHolderEntityWH::set_internal(Geom::Point const &p, Geom::Point const &origin, unsigned int state) +{ + SPRect *rect = SP_RECT(item); + + Geom::Point s = p; + + if (state & GDK_CONTROL_MASK) { + // original width/height when drag started + gdouble const w_orig = (origin[Geom::X] - rect->x.computed); + gdouble const h_orig = (origin[Geom::Y] - rect->y.computed); + + //original ratio + gdouble ratio = (w_orig / h_orig); + + // mouse displacement since drag started + gdouble minx = p[Geom::X] - origin[Geom::X]; + gdouble miny = p[Geom::Y] - origin[Geom::Y]; + + Geom::Point p_handle(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed); + + if (fabs(minx) > fabs(miny)) { + // snap to horizontal or diagonal + if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) { + // closer to the diagonal and in same-sign quarters, change both using ratio + s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(-ratio, -1)), state); + minx = s[Geom::X] - origin[Geom::X]; + miny = s[Geom::Y] - origin[Geom::Y]; + rect->height.computed = MAX(h_orig + minx / ratio, 0); + } else { + // closer to the horizontal, change only width, height is h_orig + s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(-1, 0)), state); + minx = s[Geom::X] - origin[Geom::X]; + miny = s[Geom::Y] - origin[Geom::Y]; + rect->height.computed = MAX(h_orig, 0); + } + rect->width.computed = MAX(w_orig + minx, 0); + + } else { + // snap to vertical or diagonal + if (miny != 0 && fabs(minx/miny) > 0.5 * ratio && (SGN(minx) == SGN(miny))) { + // closer to the diagonal and in same-sign quarters, change both using ratio + s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(-ratio, -1)), state); + minx = s[Geom::X] - origin[Geom::X]; + miny = s[Geom::Y] - origin[Geom::Y]; + rect->width.computed = MAX(w_orig + miny * ratio, 0); + } else { + // closer to the vertical, change only height, width is w_orig + s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(0, -1)), state); + minx = s[Geom::X] - origin[Geom::X]; + miny = s[Geom::Y] - origin[Geom::Y]; + rect->width.computed = MAX(w_orig, 0); + } + rect->height.computed = MAX(h_orig + miny, 0); + + } + + rect->width._set = rect->height._set = true; + + } else { + // move freely + s = snap_knot_position(p, state); + rect->width.computed = MAX(s[Geom::X] - rect->x.computed, 0); + rect->height.computed = MAX(s[Geom::Y] - rect->y.computed, 0); + rect->width._set = rect->height._set = true; + } + + sp_rect_clamp_radii(rect); + + (static_cast<SPObject *>(rect))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +void +RectKnotHolderEntityWH::knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state) +{ + set_internal(p, origin, state); + update_knot(); +} + +Geom::Point +RectKnotHolderEntityXY::knot_get() const +{ + SPRect *rect = SP_RECT(item); + + return Geom::Point(rect->x.computed, rect->y.computed); +} + +void +RectKnotHolderEntityXY::knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state) +{ + SPRect *rect = SP_RECT(item); + + // opposite corner (unmoved) + gdouble opposite_x = (rect->x.computed + rect->width.computed); + gdouble opposite_y = (rect->y.computed + rect->height.computed); + + // original width/height when drag started + gdouble w_orig = opposite_x - origin[Geom::X]; + gdouble h_orig = opposite_y - origin[Geom::Y]; + + Geom::Point s = p; + Geom::Point p_handle(rect->x.computed, rect->y.computed); + + // mouse displacement since drag started + gdouble minx = p[Geom::X] - origin[Geom::X]; + gdouble miny = p[Geom::Y] - origin[Geom::Y]; + + if (state & GDK_CONTROL_MASK) { + //original ratio + gdouble ratio = (w_orig / h_orig); + + if (fabs(minx) > fabs(miny)) { + // snap to horizontal or diagonal + if (minx != 0 && fabs(miny/minx) > 0.5 * 1/ratio && (SGN(minx) == SGN(miny))) { + // closer to the diagonal and in same-sign quarters, change both using ratio + s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(-ratio, -1)), state); + minx = s[Geom::X] - origin[Geom::X]; + miny = s[Geom::Y] - origin[Geom::Y]; + rect->y.computed = MIN(origin[Geom::Y] + minx / ratio, opposite_y); + rect->height.computed = MAX(h_orig - minx / ratio, 0); + } else { + // closer to the horizontal, change only width, height is h_orig + s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(-1, 0)), state); + minx = s[Geom::X] - origin[Geom::X]; + miny = s[Geom::Y] - origin[Geom::Y]; + rect->y.computed = MIN(origin[Geom::Y], opposite_y); + rect->height.computed = MAX(h_orig, 0); + } + rect->x.computed = MIN(s[Geom::X], opposite_x); + rect->width.computed = MAX(w_orig - minx, 0); + } else { + // snap to vertical or diagonal + if (miny != 0 && fabs(minx/miny) > 0.5 *ratio && (SGN(minx) == SGN(miny))) { + // closer to the diagonal and in same-sign quarters, change both using ratio + s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(-ratio, -1)), state); + minx = s[Geom::X] - origin[Geom::X]; + miny = s[Geom::Y] - origin[Geom::Y]; + rect->x.computed = MIN(origin[Geom::X] + miny * ratio, opposite_x); + rect->width.computed = MAX(w_orig - miny * ratio, 0); + } else { + // closer to the vertical, change only height, width is w_orig + s = snap_knot_position_constrained(p, Inkscape::Snapper::SnapConstraint(p_handle, Geom::Point(0, -1)), state); + minx = s[Geom::X] - origin[Geom::X]; + miny = s[Geom::Y] - origin[Geom::Y]; + rect->x.computed = MIN(origin[Geom::X], opposite_x); + rect->width.computed = MAX(w_orig, 0); + } + rect->y.computed = MIN(s[Geom::Y], opposite_y); + rect->height.computed = MAX(h_orig - miny, 0); + } + + rect->width._set = rect->height._set = rect->x._set = rect->y._set = true; + + } else { + // move freely + s = snap_knot_position(p, state); + minx = s[Geom::X] - origin[Geom::X]; + miny = s[Geom::Y] - origin[Geom::Y]; + + rect->x.computed = MIN(s[Geom::X], opposite_x); + rect->width.computed = MAX(w_orig - minx, 0); + rect->y.computed = MIN(s[Geom::Y], opposite_y); + rect->height.computed = MAX(h_orig - miny, 0); + rect->width._set = rect->height._set = rect->x._set = rect->y._set = true; + } + + sp_rect_clamp_radii(rect); + + update_knot(); + + (static_cast<SPObject *>(rect))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +RectKnotHolder::RectKnotHolder(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler) : + KnotHolder(desktop, item, relhandler) +{ + RectKnotHolderEntityRX *entity_rx = new RectKnotHolderEntityRX(); + RectKnotHolderEntityRY *entity_ry = new RectKnotHolderEntityRY(); + RectKnotHolderEntityWH *entity_wh = new RectKnotHolderEntityWH(); + RectKnotHolderEntityXY *entity_xy = new RectKnotHolderEntityXY(); + + entity_rx->create(desktop, item, this, Inkscape::CTRL_TYPE_ROTATE, + _("Adjust the <b>horizontal rounding</b> radius; with <b>Ctrl</b> " + "to make the vertical radius the same"), + SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR); + + entity_ry->create(desktop, item, this, Inkscape::CTRL_TYPE_ROTATE, + _("Adjust the <b>vertical rounding</b> radius; with <b>Ctrl</b> " + "to make the horizontal radius the same"), + SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR); + + entity_wh->create(desktop, item, this, Inkscape::CTRL_TYPE_SIZER, + _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> " + "to lock ratio or stretch in one dimension only"), + SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR); + + entity_xy->create(desktop, item, this, Inkscape::CTRL_TYPE_SIZER, + _("Adjust the <b>width and height</b> of the rectangle; with <b>Ctrl</b> " + "to lock ratio or stretch in one dimension only"), + SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR); + + entity.push_back(entity_rx); + entity.push_back(entity_ry); + entity.push_back(entity_wh); + entity.push_back(entity_xy); + + add_pattern_knotholder(); +} + +/* Box3D (= the new 3D box structure) */ + +class Box3DKnotHolderEntity : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const = 0; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state) = 0; + + Geom::Point knot_get_generic(SPItem *item, unsigned int knot_id) const; + void knot_set_generic(SPItem *item, unsigned int knot_id, Geom::Point const &p, unsigned int state); +}; + +Geom::Point +Box3DKnotHolderEntity::knot_get_generic(SPItem *item, unsigned int knot_id) const +{ + return box3d_get_corner_screen(SP_BOX3D(item), knot_id); +} + +void +Box3DKnotHolderEntity::knot_set_generic(SPItem *item, unsigned int knot_id, Geom::Point const &new_pos, unsigned int state) +{ + Geom::Point const s = snap_knot_position(new_pos, state); + + g_assert(item != NULL); + SPBox3D *box = SP_BOX3D(item); + Geom::Affine const i2dt (item->i2dt_affine ()); + + Box3D::Axis movement; + if ((knot_id < 4) != (state & GDK_SHIFT_MASK)) { + movement = Box3D::XY; + } else { + movement = Box3D::Z; + } + + box3d_set_corner (box, knot_id, s * i2dt, movement, (state & GDK_CONTROL_MASK)); + box3d_set_z_orders(box); + box3d_position_set(box); +} + +class Box3DKnotHolderEntity0 : public Box3DKnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +class Box3DKnotHolderEntity1 : public Box3DKnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +class Box3DKnotHolderEntity2 : public Box3DKnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +class Box3DKnotHolderEntity3 : public Box3DKnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +class Box3DKnotHolderEntity4 : public Box3DKnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +class Box3DKnotHolderEntity5 : public Box3DKnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +class Box3DKnotHolderEntity6 : public Box3DKnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +class Box3DKnotHolderEntity7 : public Box3DKnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +class Box3DKnotHolderEntityCenter : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +Geom::Point +Box3DKnotHolderEntity0::knot_get() const +{ + return knot_get_generic(item, 0); +} + +Geom::Point +Box3DKnotHolderEntity1::knot_get() const +{ + return knot_get_generic(item, 1); +} + +Geom::Point +Box3DKnotHolderEntity2::knot_get() const +{ + return knot_get_generic(item, 2); +} + +Geom::Point +Box3DKnotHolderEntity3::knot_get() const +{ + return knot_get_generic(item, 3); +} + +Geom::Point +Box3DKnotHolderEntity4::knot_get() const +{ + return knot_get_generic(item, 4); +} + +Geom::Point +Box3DKnotHolderEntity5::knot_get() const +{ + return knot_get_generic(item, 5); +} + +Geom::Point +Box3DKnotHolderEntity6::knot_get() const +{ + return knot_get_generic(item, 6); +} + +Geom::Point +Box3DKnotHolderEntity7::knot_get() const +{ + return knot_get_generic(item, 7); +} + +Geom::Point +Box3DKnotHolderEntityCenter::knot_get() const +{ + return box3d_get_center_screen(SP_BOX3D(item)); +} + +void +Box3DKnotHolderEntity0::knot_set(Geom::Point const &new_pos, Geom::Point const &/*origin*/, unsigned int state) +{ + knot_set_generic(item, 0, new_pos, state); +} + +void +Box3DKnotHolderEntity1::knot_set(Geom::Point const &new_pos, Geom::Point const &/*origin*/, unsigned int state) +{ + knot_set_generic(item, 1, new_pos, state); +} + +void +Box3DKnotHolderEntity2::knot_set(Geom::Point const &new_pos, Geom::Point const &/*origin*/, unsigned int state) +{ + knot_set_generic(item, 2, new_pos, state); +} + +void +Box3DKnotHolderEntity3::knot_set(Geom::Point const &new_pos, Geom::Point const &/*origin*/, unsigned int state) +{ + knot_set_generic(item, 3, new_pos, state); +} + +void +Box3DKnotHolderEntity4::knot_set(Geom::Point const &new_pos, Geom::Point const &/*origin*/, unsigned int state) +{ + knot_set_generic(item, 4, new_pos, state); +} + +void +Box3DKnotHolderEntity5::knot_set(Geom::Point const &new_pos, Geom::Point const &/*origin*/, unsigned int state) +{ + knot_set_generic(item, 5, new_pos, state); +} + +void +Box3DKnotHolderEntity6::knot_set(Geom::Point const &new_pos, Geom::Point const &/*origin*/, unsigned int state) +{ + knot_set_generic(item, 6, new_pos, state); +} + +void +Box3DKnotHolderEntity7::knot_set(Geom::Point const &new_pos, Geom::Point const &/*origin*/, unsigned int state) +{ + knot_set_generic(item, 7, new_pos, state); +} + +void +Box3DKnotHolderEntityCenter::knot_set(Geom::Point const &new_pos, Geom::Point const &origin, unsigned int state) +{ + Geom::Point const s = snap_knot_position(new_pos, state); + + SPBox3D *box = SP_BOX3D(item); + Geom::Affine const i2dt (item->i2dt_affine ()); + + box3d_set_center (SP_BOX3D(item), s * i2dt, origin * i2dt, !(state & GDK_SHIFT_MASK) ? Box3D::XY : Box3D::Z, + state & GDK_CONTROL_MASK); + + box3d_set_z_orders(box); + box3d_position_set(box); +} + +Box3DKnotHolder::Box3DKnotHolder(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler) : + KnotHolder(desktop, item, relhandler) +{ + Box3DKnotHolderEntity0 *entity_corner0 = new Box3DKnotHolderEntity0(); + Box3DKnotHolderEntity1 *entity_corner1 = new Box3DKnotHolderEntity1(); + Box3DKnotHolderEntity2 *entity_corner2 = new Box3DKnotHolderEntity2(); + Box3DKnotHolderEntity3 *entity_corner3 = new Box3DKnotHolderEntity3(); + Box3DKnotHolderEntity4 *entity_corner4 = new Box3DKnotHolderEntity4(); + Box3DKnotHolderEntity5 *entity_corner5 = new Box3DKnotHolderEntity5(); + Box3DKnotHolderEntity6 *entity_corner6 = new Box3DKnotHolderEntity6(); + Box3DKnotHolderEntity7 *entity_corner7 = new Box3DKnotHolderEntity7(); + Box3DKnotHolderEntityCenter *entity_center = new Box3DKnotHolderEntityCenter(); + + entity_corner0->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis; " + "with <b>Ctrl</b> to constrain to the directions of edges or diagonals")); + + entity_corner1->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis; " + "with <b>Ctrl</b> to constrain to the directions of edges or diagonals")); + + entity_corner2->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis; " + "with <b>Ctrl</b> to constrain to the directions of edges or diagonals")); + + entity_corner3->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Resize box in X/Y direction; with <b>Shift</b> along the Z axis; " + "with <b>Ctrl</b> to constrain to the directions of edges or diagonals")); + + entity_corner4->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction; " + "with <b>Ctrl</b> to constrain to the directions of edges or diagonals")); + + entity_corner5->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction; " + "with <b>Ctrl</b> to constrain to the directions of edges or diagonals")); + + entity_corner6->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction; " + "with <b>Ctrl</b> to constrain to the directions of edges or diagonals")); + + entity_corner7->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Resize box along the Z axis; with <b>Shift</b> in X/Y direction; " + "with <b>Ctrl</b> to constrain to the directions of edges or diagonals")); + + entity_center->create(desktop, item, this, Inkscape::CTRL_TYPE_POINT, + _("Move the box in perspective"), + SP_KNOT_SHAPE_CROSS); + + entity.push_back(entity_corner0); + entity.push_back(entity_corner1); + entity.push_back(entity_corner2); + entity.push_back(entity_corner3); + entity.push_back(entity_corner4); + entity.push_back(entity_corner5); + entity.push_back(entity_corner6); + entity.push_back(entity_corner7); + entity.push_back(entity_center); + + add_pattern_knotholder(); +} + +/* SPArc */ + +class ArcKnotHolderEntityStart : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); + virtual void knot_click(unsigned int state); +}; + +class ArcKnotHolderEntityEnd : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); + virtual void knot_click(unsigned int state); +}; + +class ArcKnotHolderEntityRX : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); + virtual void knot_click(unsigned int state); +}; + +class ArcKnotHolderEntityRY : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); + virtual void knot_click(unsigned int state); +}; + +/* + * return values: + * 1 : inside + * 0 : on the curves + * -1 : outside + */ +static gint +sp_genericellipse_side(SPGenericEllipse *ellipse, Geom::Point const &p) +{ + gdouble dx = (p[Geom::X] - ellipse->cx.computed) / ellipse->rx.computed; + gdouble dy = (p[Geom::Y] - ellipse->cy.computed) / ellipse->ry.computed; + + gdouble s = dx * dx + dy * dy; + if (s < 1.0) return 1; + if (s > 1.0) return -1; + return 0; +} + +void +ArcKnotHolderEntityStart::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, unsigned int state) +{ + int snaps = Inkscape::Preferences::get()->getInt("/options/rotationsnapsperpi/value", 12); + + SPGenericEllipse *arc = SP_GENERICELLIPSE(item); + + arc->setClosed(sp_genericellipse_side(arc, p) == -1); + + Geom::Point delta = p - Geom::Point(arc->cx.computed, arc->cy.computed); + Geom::Scale sc(arc->rx.computed, arc->ry.computed); + + arc->start = atan2(delta * sc.inverse()); + + if ((state & GDK_CONTROL_MASK) && snaps) { + arc->start = sp_round(arc->start, M_PI / snaps); + } + + arc->normalize(); + arc->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +Geom::Point +ArcKnotHolderEntityStart::knot_get() const +{ + SPGenericEllipse const *ge = SP_GENERICELLIPSE(item); + + return ge->getPointAtAngle(ge->start); +} + +void +ArcKnotHolderEntityStart::knot_click(unsigned int state) +{ + SPGenericEllipse *ge = SP_GENERICELLIPSE(item); + + if (state & GDK_SHIFT_MASK) { + ge->end = ge->start = 0; + (static_cast<SPObject *>(ge))->updateRepr(); + } +} + +void +ArcKnotHolderEntityEnd::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, unsigned int state) +{ + int snaps = Inkscape::Preferences::get()->getInt("/options/rotationsnapsperpi/value", 12); + + SPGenericEllipse *arc = SP_GENERICELLIPSE(item); + + arc->setClosed(sp_genericellipse_side(arc, p) == -1); + + Geom::Point delta = p - Geom::Point(arc->cx.computed, arc->cy.computed); + Geom::Scale sc(arc->rx.computed, arc->ry.computed); + + arc->end = atan2(delta * sc.inverse()); + + if ((state & GDK_CONTROL_MASK) && snaps) { + arc->end = sp_round(arc->end, M_PI/snaps); + } + + arc->normalize(); + arc->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +Geom::Point +ArcKnotHolderEntityEnd::knot_get() const +{ + SPGenericEllipse const *ge = SP_GENERICELLIPSE(item); + + return ge->getPointAtAngle(ge->end); +} + + +void +ArcKnotHolderEntityEnd::knot_click(unsigned int state) +{ + SPGenericEllipse *ge = SP_GENERICELLIPSE(item); + + if (state & GDK_SHIFT_MASK) { + ge->end = ge->start = 0; + (static_cast<SPObject *>(ge))->updateRepr(); + } +} + + +void +ArcKnotHolderEntityRX::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, unsigned int state) +{ + SPGenericEllipse *ge = SP_GENERICELLIPSE(item); + + Geom::Point const s = snap_knot_position(p, state); + + ge->rx.computed = fabs( ge->cx.computed - s[Geom::X] ); + + if ( state & GDK_CONTROL_MASK ) { + ge->ry.computed = ge->rx.computed; + } + + (static_cast<SPObject *>(item))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +Geom::Point +ArcKnotHolderEntityRX::knot_get() const +{ + SPGenericEllipse const *ge = SP_GENERICELLIPSE(item); + + return (Geom::Point(ge->cx.computed, ge->cy.computed) - Geom::Point(ge->rx.computed, 0)); +} + +void +ArcKnotHolderEntityRX::knot_click(unsigned int state) +{ + SPGenericEllipse *ge = SP_GENERICELLIPSE(item); + + if (state & GDK_CONTROL_MASK) { + ge->ry.computed = ge->rx.computed; + (static_cast<SPObject *>(ge))->updateRepr(); + } +} + +void +ArcKnotHolderEntityRY::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, unsigned int state) +{ + SPGenericEllipse *ge = SP_GENERICELLIPSE(item); + + Geom::Point const s = snap_knot_position(p, state); + + ge->ry.computed = fabs( ge->cy.computed - s[Geom::Y] ); + + if ( state & GDK_CONTROL_MASK ) { + ge->rx.computed = ge->ry.computed; + } + + (static_cast<SPObject *>(item))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +Geom::Point +ArcKnotHolderEntityRY::knot_get() const +{ + SPGenericEllipse const *ge = SP_GENERICELLIPSE(item); + + return (Geom::Point(ge->cx.computed, ge->cy.computed) - Geom::Point(0, ge->ry.computed)); +} + +void +ArcKnotHolderEntityRY::knot_click(unsigned int state) +{ + SPGenericEllipse *ge = SP_GENERICELLIPSE(item); + + if (state & GDK_CONTROL_MASK) { + ge->rx.computed = ge->ry.computed; + (static_cast<SPObject *>(ge))->updateRepr(); + } +} + +ArcKnotHolder::ArcKnotHolder(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler) : + KnotHolder(desktop, item, relhandler) +{ + ArcKnotHolderEntityRX *entity_rx = new ArcKnotHolderEntityRX(); + ArcKnotHolderEntityRY *entity_ry = new ArcKnotHolderEntityRY(); + ArcKnotHolderEntityStart *entity_start = new ArcKnotHolderEntityStart(); + ArcKnotHolderEntityEnd *entity_end = new ArcKnotHolderEntityEnd(); + + entity_rx->create(desktop, item, this, Inkscape::CTRL_TYPE_SIZER, + _("Adjust ellipse <b>width</b>, with <b>Ctrl</b> to make circle"), + SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR); + + entity_ry->create(desktop, item, this, Inkscape::CTRL_TYPE_SIZER, + _("Adjust ellipse <b>height</b>, with <b>Ctrl</b> to make circle"), + SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR); + + entity_start->create(desktop, item, this, Inkscape::CTRL_TYPE_ROTATE, + _("Position the <b>start point</b> of the arc or segment; with <b>Ctrl</b> " + "to snap angle; drag <b>inside</b> the ellipse for arc, <b>outside</b> for segment"), + SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR); + + entity_end->create(desktop, item, this, Inkscape::CTRL_TYPE_ROTATE, + _("Position the <b>end point</b> of the arc or segment; with <b>Ctrl</b> to snap angle; " + "drag <b>inside</b> the ellipse for arc, <b>outside</b> for segment"), + SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR); + + entity.push_back(entity_rx); + entity.push_back(entity_ry); + entity.push_back(entity_start); + entity.push_back(entity_end); + + add_pattern_knotholder(); +} + +/* SPStar */ + +class StarKnotHolderEntity1 : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); + virtual void knot_click(unsigned int state); +}; + +class StarKnotHolderEntity2 : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); + virtual void knot_click(unsigned int state); +}; + +void +StarKnotHolderEntity1::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, unsigned int state) +{ + SPStar *star = SP_STAR(item); + + Geom::Point const s = snap_knot_position(p, state); + + Geom::Point d = s - star->center; + + double arg1 = atan2(d); + double darg1 = arg1 - star->arg[0]; + + if (state & GDK_MOD1_MASK) { + star->randomized = darg1/(star->arg[0] - star->arg[1]); + } else if (state & GDK_SHIFT_MASK) { + star->rounded = darg1/(star->arg[0] - star->arg[1]); + } else if (state & GDK_CONTROL_MASK) { + star->r[0] = L2(d); + } else { + star->r[0] = L2(d); + star->arg[0] = arg1; + star->arg[1] += darg1; + } + (static_cast<SPObject *>(star))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +void +StarKnotHolderEntity2::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, unsigned int state) +{ + SPStar *star = SP_STAR(item); + + Geom::Point const s = snap_knot_position(p, state); + + if (star->flatsided == false) { + Geom::Point d = s - star->center; + + double arg1 = atan2(d); + double darg1 = arg1 - star->arg[1]; + + if (state & GDK_MOD1_MASK) { + star->randomized = darg1/(star->arg[0] - star->arg[1]); + } else if (state & GDK_SHIFT_MASK) { + star->rounded = fabs(darg1/(star->arg[0] - star->arg[1])); + } else if (state & GDK_CONTROL_MASK) { + star->r[1] = L2(d); + star->arg[1] = star->arg[0] + M_PI / star->sides; + } + else { + star->r[1] = L2(d); + star->arg[1] = atan2(d); + } + (static_cast<SPObject *>(star))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); + } +} + +Geom::Point +StarKnotHolderEntity1::knot_get() const +{ + g_assert(item != NULL); + + SPStar const *star = SP_STAR(item); + + return sp_star_get_xy(star, SP_STAR_POINT_KNOT1, 0); + +} + +Geom::Point +StarKnotHolderEntity2::knot_get() const +{ + g_assert(item != NULL); + + SPStar const *star = SP_STAR(item); + + return sp_star_get_xy(star, SP_STAR_POINT_KNOT2, 0); +} + +static void +sp_star_knot_click(SPItem *item, unsigned int state) +{ + SPStar *star = SP_STAR(item); + + if (state & GDK_MOD1_MASK) { + star->randomized = 0; + (static_cast<SPObject *>(star))->updateRepr(); + } else if (state & GDK_SHIFT_MASK) { + star->rounded = 0; + (static_cast<SPObject *>(star))->updateRepr(); + } else if (state & GDK_CONTROL_MASK) { + star->arg[1] = star->arg[0] + M_PI / star->sides; + (static_cast<SPObject *>(star))->updateRepr(); + } +} + +void +StarKnotHolderEntity1::knot_click(unsigned int state) +{ + sp_star_knot_click(item, state); +} + +void +StarKnotHolderEntity2::knot_click(unsigned int state) +{ + sp_star_knot_click(item, state); +} + +StarKnotHolder::StarKnotHolder(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler) : + KnotHolder(desktop, item, relhandler) +{ + SPStar *star = SP_STAR(item); + + StarKnotHolderEntity1 *entity1 = new StarKnotHolderEntity1(); + entity1->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Adjust the <b>tip radius</b> of the star or polygon; " + "with <b>Shift</b> to round; with <b>Alt</b> to randomize")); + + entity.push_back(entity1); + + if (star->flatsided == false) { + StarKnotHolderEntity2 *entity2 = new StarKnotHolderEntity2(); + entity2->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Adjust the <b>base radius</b> of the star; with <b>Ctrl</b> to keep star rays " + "radial (no skew); with <b>Shift</b> to round; with <b>Alt</b> to randomize")); + entity.push_back(entity2); + } + + add_pattern_knotholder(); +} + +/* SPSpiral */ + +class SpiralKnotHolderEntityInner : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); + virtual void knot_click(unsigned int state); +}; + +class SpiralKnotHolderEntityOuter : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + + +/* + * set attributes via inner (t=t0) knot point: + * [default] increase/decrease inner point + * [shift] increase/decrease inner and outer arg synchronizely + * [control] constrain inner arg to round per PI/4 + */ +void +SpiralKnotHolderEntityInner::knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state) +{ + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + int snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12); + + SPSpiral *spiral = SP_SPIRAL(item); + + gdouble dx = p[Geom::X] - spiral->cx; + gdouble dy = p[Geom::Y] - spiral->cy; + + gdouble moved_y = p[Geom::Y] - origin[Geom::Y]; + + if (state & GDK_MOD1_MASK) { + // adjust divergence by vertical drag, relative to rad + if (spiral->rad > 0) { + double exp_delta = 0.1*moved_y/(spiral->rad); // arbitrary multiplier to slow it down + spiral->exp += exp_delta; + if (spiral->exp < 1e-3) + spiral->exp = 1e-3; + } + } else { + // roll/unroll from inside + gdouble arg_t0; + spiral->getPolar(spiral->t0, NULL, &arg_t0); + + gdouble arg_tmp = atan2(dy, dx) - arg_t0; + gdouble arg_t0_new = arg_tmp - floor((arg_tmp+M_PI)/(2.0*M_PI))*2.0*M_PI + arg_t0; + spiral->t0 = (arg_t0_new - spiral->arg) / (2.0*M_PI*spiral->revo); + + /* round inner arg per PI/snaps, if CTRL is pressed */ + if ( ( state & GDK_CONTROL_MASK ) + && ( fabs(spiral->revo) > SP_EPSILON_2 ) + && ( snaps != 0 ) ) { + gdouble arg = 2.0*M_PI*spiral->revo*spiral->t0 + spiral->arg; + spiral->t0 = (sp_round(arg, M_PI/snaps) - spiral->arg)/(2.0*M_PI*spiral->revo); + } + + spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999); + } + + (static_cast<SPObject *>(spiral))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +/* + * set attributes via outer (t=1) knot point: + * [default] increase/decrease revolution factor + * [control] constrain inner arg to round per PI/4 + */ +void +SpiralKnotHolderEntityOuter::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, unsigned int state) +{ + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + int snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12); + + SPSpiral *spiral = SP_SPIRAL(item); + + gdouble dx = p[Geom::X] - spiral->cx; + gdouble dy = p[Geom::Y] - spiral->cy; + + if (state & GDK_SHIFT_MASK) { // rotate without roll/unroll + spiral->arg = atan2(dy, dx) - 2.0*M_PI*spiral->revo; + if (!(state & GDK_MOD1_MASK)) { + // if alt not pressed, change also rad; otherwise it is locked + spiral->rad = MAX(hypot(dx, dy), 0.001); + } + if ( ( state & GDK_CONTROL_MASK ) + && snaps ) { + spiral->arg = sp_round(spiral->arg, M_PI/snaps); + } + } else { // roll/unroll + // arg of the spiral outer end + double arg_1; + spiral->getPolar(1, NULL, &arg_1); + + // its fractional part after the whole turns are subtracted + double arg_r = arg_1 - sp_round(arg_1, 2.0*M_PI); + + // arg of the mouse point relative to spiral center + double mouse_angle = atan2(dy, dx); + if (mouse_angle < 0) + mouse_angle += 2*M_PI; + + // snap if ctrl + if ( ( state & GDK_CONTROL_MASK ) && snaps ) { + mouse_angle = sp_round(mouse_angle, M_PI/snaps); + } + + // by how much we want to rotate the outer point + double diff = mouse_angle - arg_r; + if (diff > M_PI) + diff -= 2*M_PI; + else if (diff < -M_PI) + diff += 2*M_PI; + + // calculate the new rad; + // the value of t corresponding to the angle arg_1 + diff: + double t_temp = ((arg_1 + diff) - spiral->arg)/(2*M_PI*spiral->revo); + // the rad at that t: + double rad_new = 0; + if (t_temp > spiral->t0) + spiral->getPolar(t_temp, &rad_new, NULL); + + // change the revo (converting diff from radians to the number of turns) + spiral->revo += diff/(2*M_PI); + if (spiral->revo < 1e-3) + spiral->revo = 1e-3; + + // if alt not pressed and the values are sane, change the rad + if (!(state & GDK_MOD1_MASK) && rad_new > 1e-3 && rad_new/spiral->rad < 2) { + // adjust t0 too so that the inner point stays unmoved + double r0; + spiral->getPolar(spiral->t0, &r0, NULL); + spiral->rad = rad_new; + spiral->t0 = pow(r0 / spiral->rad, 1.0/spiral->exp); + } + if (!IS_FINITE(spiral->t0)) spiral->t0 = 0.0; + spiral->t0 = CLAMP(spiral->t0, 0.0, 0.999); + } + + (static_cast<SPObject *>(spiral))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +Geom::Point +SpiralKnotHolderEntityInner::knot_get() const +{ + SPSpiral const *spiral = SP_SPIRAL(item); + + return spiral->getXY(spiral->t0); +} + +Geom::Point +SpiralKnotHolderEntityOuter::knot_get() const +{ + SPSpiral const *spiral = SP_SPIRAL(item); + + return spiral->getXY(1.0); +} + +void +SpiralKnotHolderEntityInner::knot_click(unsigned int state) +{ + SPSpiral *spiral = SP_SPIRAL(item); + + if (state & GDK_MOD1_MASK) { + spiral->exp = 1; + (static_cast<SPObject *>(spiral))->updateRepr(); + } else if (state & GDK_SHIFT_MASK) { + spiral->t0 = 0; + (static_cast<SPObject *>(spiral))->updateRepr(); + } +} + +SpiralKnotHolder::SpiralKnotHolder(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler) : + KnotHolder(desktop, item, relhandler) +{ + SpiralKnotHolderEntityInner *entity_inner = new SpiralKnotHolderEntityInner(); + SpiralKnotHolderEntityOuter *entity_outer = new SpiralKnotHolderEntityOuter(); + + entity_inner->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Roll/unroll the spiral from <b>inside</b>; with <b>Ctrl</b> to snap angle; " + "with <b>Alt</b> to converge/diverge")); + + entity_outer->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Roll/unroll the spiral from <b>outside</b>; with <b>Ctrl</b> to snap angle; " + "with <b>Shift</b> to scale/rotate; with <b>Alt</b> to lock radius")); + + entity.push_back(entity_inner); + entity.push_back(entity_outer); + + add_pattern_knotholder(); +} + +/* SPOffset */ + +class OffsetKnotHolderEntity : public KnotHolderEntity { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +void +OffsetKnotHolderEntity::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, unsigned int /*state*/) +{ + SPOffset *offset = SP_OFFSET(item); + + offset->rad = sp_offset_distance_to_original(offset, p); + offset->knot = p; + offset->knotSet = true; + + (static_cast<SPObject *>(offset))->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + + +Geom::Point +OffsetKnotHolderEntity::knot_get() const +{ + SPOffset const *offset = SP_OFFSET(item); + + Geom::Point np; + sp_offset_top_point(offset,&np); + return np; +} + +OffsetKnotHolder::OffsetKnotHolder(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler) : + KnotHolder(desktop, item, relhandler) +{ + OffsetKnotHolderEntity *entity_offset = new OffsetKnotHolderEntity(); + entity_offset->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Adjust the <b>offset distance</b>")); + entity.push_back(entity_offset); + + add_pattern_knotholder(); +} + +// TODO: this is derived from RectKnotHolderEntityWH because it used the same static function +// set_internal as the latter before KnotHolderEntity was C++ified. Check whether this also makes +// sense logically. +class FlowtextKnotHolderEntity : public RectKnotHolderEntityWH { +public: + virtual Geom::Point knot_get() const; + virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state); +}; + +Geom::Point +FlowtextKnotHolderEntity::knot_get() const +{ + SPRect const *rect = SP_RECT(item); + + return Geom::Point(rect->x.computed + rect->width.computed, rect->y.computed + rect->height.computed); +} + +void +FlowtextKnotHolderEntity::knot_set(Geom::Point const &p, Geom::Point const &origin, unsigned int state) +{ + set_internal(p, origin, state); +} + +FlowtextKnotHolder::FlowtextKnotHolder(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler) : + KnotHolder(desktop, item, relhandler) +{ + g_assert(item != NULL); + + FlowtextKnotHolderEntity *entity_flowtext = new FlowtextKnotHolderEntity(); + entity_flowtext->create(desktop, item, this, Inkscape::CTRL_TYPE_SHAPER, + _("Drag to resize the <b>flowed text frame</b>")); + entity.push_back(entity_flowtext); +} + +/* + 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 : |