seltrans.cpp revision 41d5324199363aa6e5edea5ee67b2bb835b5d1f7
#define __SELTRANS_C__
/*
* Helper object for transforming selected items
*
* Author:
* Lauris Kaplinski <lauris@kaplinski.com>
* bulia byak <buliabyak@users.sf.net>
* Carl Hetherington <inkscape@carlh.net>
*
* Copyright (C) 1999-2002 Lauris Kaplinski
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <libnr/nr-matrix-ops.h>
#include <libnr/nr-matrix-translate-ops.h>
#include <libnr/nr-rotate-ops.h>
#include <libnr/nr-scale-ops.h>
#include <libnr/nr-translate-matrix-ops.h>
#include <libnr/nr-translate-ops.h>
#include <gdk/gdkkeysyms.h>
#include "document.h"
#include "sp-namedview.h"
#include "desktop.h"
#include "desktop-handles.h"
#include "desktop-style.h"
#include "knot.h"
#include "snap.h"
#include "selection.h"
#include "select-context.h"
#include "sp-item.h"
#include "sp-item-transform.h"
#include "seltrans-handles.h"
#include "seltrans.h"
#include "selection-chemistry.h"
#include "sp-metrics.h"
#include "verbs.h"
#include "display/sp-ctrlline.h"
#include "prefs-utils.h"
#include "isnan.h" //temp fix. make sure included last
static void sp_sel_trans_handle_new_event(SPKnot *knot, NR::Point *position, guint32 state, gpointer data);
static gboolean sp_sel_trans_handle_request(SPKnot *knot, NR::Point *p, guint state, gboolean *data);
{
case GDK_MOTION_NOTIFY:
break;
case GDK_KEY_PRESS:
/* stamping mode: both mode(show content and outline) operation with knot */
if (!SP_KNOT_IS_GRABBED(knot)) {
return FALSE;
}
return TRUE;
}
break;
default:
break;
}
return FALSE;
}
_grabbed(false),
_show_handles(true),
{
for (int i = 0; i < 8; i++) {
}
_center_is_set = false; // reread _center from items, or set to bbox midpoint
"anchor", GTK_ANCHOR_CENTER,
"mode", SP_CTRL_MODE_COLOR,
"shape", SP_CTRL_SHAPE_BITMAP,
"size", 13.0,
"filled", TRUE,
"fill_color", 0x00000000,
"stroked", TRUE,
"stroke_color", 0x000000a0,
NULL);
"anchor", GTK_ANCHOR_CENTER,
"mode", SP_CTRL_MODE_XOR,
"shape", SP_CTRL_SHAPE_CROSS,
"size", 7.0,
"filled", TRUE,
"fill_color", 0xffffff7f,
"stroked", TRUE,
"stroke_color", 0xffffffff,
NULL);
for (int i = 0; i < 4; i++) {
sp_canvas_item_hide(_l[i]);
}
);
);
}
{
for (unsigned int i = 0; i < 8; i++) {
if (_shandle[i]) {
}
if (_rhandle[i]) {
}
}
if (_chandle) {
}
if (_norm) {
}
if (_grip) {
}
for (int i = 0; i < 4; i++) {
if (_l[i]) {
}
}
}
}
{
}
{
if (_state == STATE_SCALE) {
} else {
}
_center_is_set = true; // no need to reread center
}
{
_center = p;
_center_is_set = true;
// Write the new center position into all selected items
// only set the value; updating repr and document_done will be done once, on ungrab
}
}
{
_grabbed = true;
_changed = false;
if (_empty) {
return;
}
_items_centers.push_back(std::pair<SPItem *, NR::Point>(it, it->getCenter())); // for content-dragging, we need to remember original centers
}
_point = p;
// The selector tool should snap the bbox and the special snappoints, but not path nodes
// (The special points are the handles, center, rotation axis, font baseline, ends of spiral, etc.)
// First, get all special points for snapping
std::vector<NR::Point> snap_points_hull = selection->getSnapPointsConvexHull(); // Includes path nodes
/* Snapping a huge number of nodes will take way too long, so limit the number of snappable nodes
An average user would rarely ever try to snap such a large number of nodes anyway, because
(s)he could hardly discern which node would be snapping */
// Unfortunately, by now we will have lost the font-baseline snappoints :-(
}
// Find bbox hulling all special points, which excludes stroke width. Here we need to include the
// path nodes, for example because a rectangle which has been converted to a path doesn't have
// any other special points
if ( snap_points_hull.empty() == false ) {
i++;
while (i != snap_points_hull.end()) {
snap_points_bbox.expandTo(*i);
i++;
}
}
// Next, determine the bounding box for snapping ...
_approximate_bbox = selection->bounds(SPItem::APPROXIMATE_BBOX); // Used for correctly scaling the strokewidth
if (_bbox) {
// ... and add the bbox corners to _bbox_points
for ( unsigned i = 0 ; i < 4 ; i++ ) {
}
// There are two separate "opposites" (i.e. opposite w.r.t. the handle being dragged):
// - one for snapping the boundingbox, which can be either visual or geometric
// - one for snapping the special points
// The "opposite" in case of a geometric boundingbox always coincides with the "opposite" for the special points
// These distinct "opposites" are needed in the snapmanager to avoid bugs such as #1540195 (in which
// a box is caught between to guides)
_opposite_for_specpoints = (snap_points_bbox.min() + (snap_points_bbox.dimensions() * NR::scale(1-x, 1-y) ) );
// Only a single "opposite" can be used in calculating transformations.
}
/*std::cout << "Number of snap points: " << _snap_points.size() << std::endl;
for (std::vector<NR::Point>::const_iterator i = _snap_points.begin(); i != _snap_points.end(); i++)
{
std::cout << " " << *i << std::endl;
}
std::cout << "Number of bbox points: " << _bbox_points.size() << std::endl;
for (std::vector<NR::Point>::const_iterator i = _bbox_points.begin(); i != _bbox_points.end(); i++)
{
std::cout << " " << *i << std::endl;
}*/
if ((x != -1) && (y != -1)) {
}
if (_show == SHOW_OUTLINE) {
for (int i = 0; i < 4; i++)
sp_canvas_item_show(_l[i]);
}
}
{
if (_show == SHOW_CONTENT) {
// update the content
}
} else {
if (_bbox) {
/* update the outline */
for (unsigned i = 0 ; i < 4 ; i++) {
}
for (unsigned i = 0 ; i < 4 ; i++) {
}
}
}
_changed = true;
}
{
_grabbed = false;
_show_handles = true;
}
if (_show == SHOW_OUTLINE) {
for (int i = 0; i < 4; i++)
sp_canvas_item_hide(_l[i]);
}
if (_stamp_cache) {
_stamp_cache = NULL;
}
if (_center) {
_center_is_set = true;
}
// If dragging showed content live, sp_selection_apply_affine cannot change the centers
// appropriately - it does not know the original positions of the centers (all objects already have
// the new bboxes). So we need to reset the centers from our saved array.
for (unsigned i = 0; i < _items_centers.size(); i++) {
}
}
}
if (_current.is_translation()) {
_("Move"));
_("Scale"));
} else if (_current.is_rotation()) {
_("Rotate"));
} else {
_("Skew"));
}
} else {
if (_center_is_set) {
// we were dragging center; update reprs and commit undoable action
}
_("Set center"));
}
}
}
/* fixme: This is really bad, as we compare positions for each stamp (Lauris) */
/* fixme: IMHO the best way to keep sort cache would be to implement timestamping at last */
{
if ( fixup && _stamp_cache ) {
// TODO - give a proper fix. Simple temproary work-around for the grab() issue
_stamp_cache = NULL;
}
/* stamping mode */
if (!_empty) {
GSList *l;
if (_stamp_cache) {
l = _stamp_cache;
} else {
/* Build cache */
_stamp_cache = l;
}
while (l) {
// remember the position of the item
// remember parent
// add the new repr to the parent
// move to the saved position
if (_show == SHOW_OUTLINE) {
} else {
}
}
l = l->next;
}
_("Stamp"));
}
if ( fixup && _stamp_cache ) {
// TODO - give a proper fix. Simple temproary work-around for the grab() issue
_stamp_cache = NULL;
}
}
{
if ( !_show_handles || _empty )
{
return;
}
// center handle
_chandle = sp_knot_new(_desktop, _("<b>Center</b> of rotation and skewing: drag to reposition; scaling with Shift also uses this center"));
}
if ( _state == STATE_SCALE ) {
_("<b>Squeeze or stretch</b> selection; with <b>Ctrl</b> to scale uniformly; with <b>Shift</b> to scale around rotation center"),
_("<b>Scale</b> selection; with <b>Ctrl</b> to scale uniformly; with <b>Shift</b> to scale around rotation center"));
} else {
_("<b>Skew</b> selection; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to skew around the opposite side"),
_("<b>Rotate</b> selection; with <b>Ctrl</b> to snap angle; with <b>Shift</b> to rotate around the opposite corner"));
}
if (!_center_is_set) {
_center_is_set = true;
}
} else {
}
}
{
if (_empty) {
return;
}
// First, get all special points for snapping
std::vector<NR::Point> snap_points_hull = selection->getSnapPointsConvexHull(); // Includes path nodes
// Find bbox hulling all special points, which excludes stroke width. Here we need to include the
// path nodes, for example because a rectangle which has been converted to a path doesn't have
// any other special points
if ( snap_points_hull.empty() == false ) {
i++;
while (i != snap_points_hull.end()) {
snap_points_bbox.expandTo(*i);
i++;
}
}
// Next, determine the bounding box for snapping ...
if (!_bbox) {
_empty = true;
return;
}
}
{
for (int i = 0; i < num; i++) {
sp_knot_hide(knot[i]);
}
}
}
{
g_return_if_fail( !_empty );
for (int i = 0; i < num; i++) {
sp_knot_update_ctrl(knot[i]);
g_signal_connect(G_OBJECT(knot[i]), "event", G_CALLBACK(sp_seltrans_handle_event), (gpointer) &handle[i]);
}
sp_knot_show(knot[i]);
// shouldn't have nullary bbox, but knots
+ ( _bbox->dimensions()
sp_knot_moveto(knot[i], &p);
}
}
{
);
}
{
}
static void sp_sel_trans_handle_new_event(SPKnot *knot, NR::Point *position, guint state, gpointer data)
{
);
}
static gboolean sp_sel_trans_handle_request(SPKnot *knot, NR::Point *position, guint state, gboolean *data)
{
);
}
{
);
}
{
case GTK_ANCHOR_CENTER:
if (state & GDK_SHIFT_MASK) {
// Unset the center position for all selected items
it->unsetCenter();
_center_is_set = false; // center has changed
}
_("Reset center"));
}
break;
default:
break;
}
}
{
case GTK_ANCHOR_CENTER:
"shape", SP_CTRL_SHAPE_BITMAP,
"size", 13.0,
NULL);
break;
default:
"shape", SP_CTRL_SHAPE_CROSS,
"size", 7.0,
NULL);
break;
}
}
void Inkscape::SelTrans::handleNewEvent(SPKnot *knot, NR::Point *position, guint state, SPSelTransHandle const &handle)
{
if (!SP_KNOT_IS_GRABBED(knot)) {
return;
}
// in case items have been unhooked from the document, don't
// try to continue processing events for them.
return;
}
}
}
gboolean Inkscape::SelTrans::handleRequest(SPKnot *knot, NR::Point *position, guint state, SPSelTransHandle const &handle)
{
if (!SP_KNOT_IS_GRABBED(knot)) {
return TRUE;
}
if (state & GDK_MOD1_MASK) {
}
} else if (_center) {
} else {
// FIXME
return TRUE;
}
}
return TRUE;
}
{
if (!_grabbed) {
_snap_bbox_type = (prefs_bbox == NULL || strcmp(prefs_bbox, "geometric")==0)? SPItem::GEOMETRIC_BBOX : SPItem::APPROXIMATE_BBOX;
//SPItem::APPROXIMATE_BBOX will be replaced by SPItem::VISUAL_BBOX, as soon as the latter is implemented properly
_center_is_set = false; // center(s) may have changed
}
}
{
if (!_grabbed) {
// reset internal flag
_changed = false;
_center_is_set = false; // center(s) may have changed
}
}
/*
* handlers for handle move-request
*/
/** Returns -1 or 1 according to the sign of x. Returns 1 for 0 and NaN. */
static double sign(double const x)
{
return ( x < 0
? -1
: 1 );
}
{
}
{
}
{
}
{
}
{
}
{
using NR::X;
using NR::Y;
/* Work out the new scale factors `s' */
for ( unsigned int i = 0 ; i < 2 ; i++ ) {
if ( fabs(d[i]) > 0.001 ) {
if ( fabs(s[i]) < 1e-9 ) {
s[i] = 1e-9;
}
}
}
/* Get a STL list of the selected items.
** FIXME: this should probably be done by Inkscape::Selection.
*/
}
// Scale is locked to a 1:1 aspect ratio, so that s[X] must be made to equal s[Y].
//
// The aspect-ratio must be locked before snapping
} else {
}
// Snap along a suitable constraint vector from the origin.
// The inclination of the constraint vector is calculated from the aspect ratio
// Determine direction of the constraint vector
);
it,
s,
it,
s,
/* We didn't snap, so just keep the locked aspect ratio */
} else {
/* Choose the smaller difference in scale. Since s[X] == s[Y] we can
** just compare difference in s[X].
*/
}
} else {
/* Scale aspect ratio is unlocked */
it,
s,
it,
s,
/* Pick the snap that puts us closest to the original scale */
: NR_HUGE;
: NR_HUGE;
}
/* Update the knot position */
/* Status text */
_("<b>Scale</b>: %0.2f%% x %0.2f%%; with <b>Ctrl</b> to lock ratio"),
return TRUE;
}
gboolean Inkscape::SelTrans::stretchRequest(SPSelTransHandle const &handle, NR::Point &pt, guint state)
{
using NR::X;
using NR::Y;
case GDK_TOP_SIDE:
case GDK_BOTTOM_SIDE:
break;
case GDK_LEFT_SIDE:
case GDK_RIGHT_SIDE:
break;
default:
return TRUE;
};
return FALSE;
}
s[axis] = 1e-15;
}
/* Get a STL list of the selected items.
** FIXME: this should probably be done by Inkscape::Selection.
*/
}
if ( state & GDK_CONTROL_MASK ) {
// on ctrl, apply symmetrical scaling instead of stretching
it,
s[axis],
axis,
true);
it,
s[axis],
axis,
true);
} else {
it,
s[axis],
axis,
false);
it,
s[axis],
axis,
false);
/* Choose the smaller difference in scale */
s[perp] = 1;
}
g_warning("point=(%g, %g), norm=(%g, %g), s=(%g, %g)\n",
}
// status text
_("<b>Scale</b>: %0.2f%% x %0.2f%%; with <b>Ctrl</b> to lock ratio"),
return TRUE;
}
gboolean Inkscape::SelTrans::skewRequest(SPSelTransHandle const &handle, NR::Point &pt, guint state)
{
using NR::X;
using NR::Y;
return FALSE;
}
dim_a = X;
dim_b = Y;
} else {
dim_a = Y;
dim_b = X;
}
double skew[2];
double s[2] = { 1.0, 1.0 };
return FALSE;
}
} else {
}
if (state & GDK_CONTROL_MASK) {
if (snaps) {
}
} else {
dim_b);
dim_b);
/* We snapped something, so change the skew to reflect it */
}
}
/* status text */
// TRANSLATORS: don't modify the first ";"
// (it will NOT be displayed as ";" - only the second one will be)
_("<b>Skew</b>: %0.2f°; with <b>Ctrl</b> to snap angle"),
degrees);
return TRUE;
}
{
// rotate affine in rotate
double radians;
if (state & GDK_CONTROL_MASK) {
/* Have to restrict movement. */
if (snaps) {
}
} else {
}
/* status text */
// TRANSLATORS: don't modify the first ";"
// (it will NOT be displayed as ";" - only the second one will be)
_("<b>Rotate</b>: %0.2f°; with <b>Ctrl</b> to snap angle"), degrees);
return TRUE;
}
{
using NR::X;
using NR::Y;
if (state & GDK_CONTROL_MASK) {
} else {
}
}
// screen pixels to snap center to bbox
#define SNAP_DIST 5
// FIXME: take from prefs
for (int i = 0; i < 2; i++) {
}
}
}
}
}
// status text
_message_context.setF(Inkscape::NORMAL_MESSAGE, _("Move <b>center</b> to %s, %s"), xs->str, ys->str);
return TRUE;
}
/*
* handlers for handle movement
*
*/
void sp_sel_trans_stretch(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, NR::Point &pt, guint state)
{
}
void sp_sel_trans_scale(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, NR::Point &pt, guint state)
{
}
void sp_sel_trans_skew(Inkscape::SelTrans *seltrans, SPSelTransHandle const &handle, NR::Point &pt, guint state)
{
}
void sp_sel_trans_rotate(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, NR::Point &pt, guint state)
{
}
{
using NR::X;
using NR::Y;
case GDK_LEFT_SIDE:
case GDK_RIGHT_SIDE:
dim = X;
break;
case GDK_TOP_SIDE:
case GDK_BOTTOM_SIDE:
dim = Y;
break;
default:
abort();
break;
}
return;
}
g_warning("s[dim]=%g, pt[dim]=%g, scale_origin[dim]=%g, point[dim]=%g\n",
}
s[dim] = 1e-15;
}
if (state & GDK_CONTROL_MASK) {
/* Preserve aspect ratio, but never flip in the dimension not being edited. */
}
if (!_bbox) {
return;
}
//Get two corners of the new bbox
NR::Point p1 = _approximate_bbox->min() * (NR::translate(-scale_origin) * NR::Matrix(s) * NR::translate(scale_origin));
NR::Point p2 = _approximate_bbox->max() * (NR::translate(-scale_origin) * NR::Matrix(s) * NR::translate(scale_origin));
//Find the ones at the lower-left and upper-right, as required by get_scale_transform_with_stroke
int transform_stroke = false;
gdouble strokewidth = 0;
}
NR::Matrix scaler = get_scale_transform_with_stroke (*_approximate_bbox, strokewidth, transform_stroke,
}
{
if (!_bbox) {
return;
}
if (fabs(s[i]) < 1e-9)
s[i] = 1e-9;
}
//Get two corners of the new bbox
NR::Point p1 = _approximate_bbox->min() * (NR::translate(-_origin) * NR::Matrix(s) * NR::translate(_origin));
NR::Point p2 = _approximate_bbox->max() * (NR::translate(-_origin) * NR::Matrix(s) * NR::translate(_origin));
//Find the ones at the lower-left and upper-right, as required by get_scale_transform_with_stroke
int transform_stroke = false;
gdouble strokewidth = 0;
}
NR::Matrix scaler = get_scale_transform_with_stroke (*_approximate_bbox, strokewidth, transform_stroke,
}
{
unsigned dim;
case GDK_SB_H_DOUBLE_ARROW:
break;
case GDK_SB_V_DOUBLE_ARROW:
break;
default:
abort();
break;
}
return;
}
for (int i = 0; i < 2; i++) {
}
}
}
{
if (h1 < 1e-15) {
return;
}
if (h2 < 1e-15) {
return;
}
}
void sp_sel_trans_center(Inkscape::SelTrans *seltrans, SPSelTransHandle const &, NR::Point &pt, guint state)
{
}
{
/* The amount that we've moved by during this drag */
/* Get a STL list of the selected items.
** FIXME: this should probably be done by Inkscape::Selection.
*/
}
if (alt) {
/* Alt pressed means keep offset: snap the moved distance to the grid.
** FIXME: this will snap to more than just the grid, nowadays.
*/
} else if (!shift) {
/* We're snapping to things, possibly with a constraint to horizontal or
** vertical movement. Obtain a list of possible translations and then
** pick the smallest.
*/
/* This will be our list of possible translations */
if (control) {
/* Snap to things, and also constrain to horizontal or vertical movement */
it,
dxy));
it,
dxy));
}
} else {
/* Snap to things with no constraint */
}
/* Pick one */
if (i->second) {
if (m < best) {
best = m;
}
}
}
}
if (control) {
/* Ensure that the horizontal and vertical constraint has been applied */
} else {
}
}
// status text
_message_context.setF(Inkscape::NORMAL_MESSAGE, _("<b>Move</b> by %s, %s; with <b>Ctrl</b> to restrict to horizontal/vertical; with <b>Shift</b> to disable snapping"), xs->str, ys->str);
}
/*
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 :