X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Fsp-guide.cpp;h=f5edf7d97cf3a63baf9820d97bf57822ae640f1b;hb=11c5de79de3c200331e168a745b0505a50aeffea;hp=4fc5a0f85a474e996a34a3ea38dec4218b1d57b3;hpb=627d5932965a686f0c1aa9083cab4429f3ba7abb;p=inkscape.git diff --git a/src/sp-guide.cpp b/src/sp-guide.cpp index 4fc5a0f85..f5edf7d97 100644 --- a/src/sp-guide.cpp +++ b/src/sp-guide.cpp @@ -18,8 +18,14 @@ #ifdef HAVE_CONFIG_H # include #endif + +#include +#include +#include +#include "desktop-handles.h" #include "display/guideline.h" #include "svg/svg.h" +#include "svg/stringstream.h" #include "attributes.h" #include "sp-guide.h" #include @@ -28,6 +34,13 @@ #include #include #include +#include "sp-metrics.h" +#include "inkscape.h" +#include "desktop.h" +#include "sp-namedview.h" +#include <2geom/angle.h> +#include "document.h" + using std::vector; enum { @@ -101,10 +114,8 @@ static void sp_guide_class_init(SPGuideClass *gc) static void sp_guide_init(SPGuide *guide) { - guide->normal = component_vectors[NR::Y]; - /* constrain y coordinate; horizontal line. I doubt it ever matters what we initialize - this to. */ - guide->position = 0.0; + guide->normal_to_line = component_vectors[Geom::Y]; + guide->point_on_line = Geom::Point(0.,0.); guide->color = 0x0000ff7f; guide->hicolor = 0xff00007f; } @@ -156,7 +167,7 @@ static void sp_guide_release(SPObject *object) SPGuide *guide = (SPGuide *) object; while (guide->views) { - gtk_object_destroy(GTK_OBJECT(guide->views->data)); + sp_guideline_delete(SP_GUIDELINE(guide->views->data)); guide->views = g_slist_remove(guide->views, guide->views->data); } @@ -170,38 +181,59 @@ static void sp_guide_set(SPObject *object, unsigned int key, const gchar *value) SPGuide *guide = SP_GUIDE(object); switch (key) { - case SP_ATTR_ORIENTATION: + case SP_ATTR_ORIENTATION: + { if (value && !strcmp(value, "horizontal")) { /* Visual representation of a horizontal line, constrain vertically (y coordinate). */ - guide->normal = component_vectors[NR::Y]; + guide->normal_to_line = component_vectors[Geom::Y]; } else if (value && !strcmp(value, "vertical")) { - guide->normal = component_vectors[NR::X]; + guide->normal_to_line = component_vectors[Geom::X]; } else if (value) { gchar ** strarray = g_strsplit(value, ",", 2); double newx, newy; unsigned int success = sp_svg_number_read_d(strarray[0], &newx); success += sp_svg_number_read_d(strarray[1], &newy); g_strfreev (strarray); - if (success == 2) { + if (success == 2 && (fabs(newx) > 1e-6 || fabs(newy) > 1e-6)) { Geom::Point direction(newx, newy); direction.normalize(); - guide->normal = direction; + guide->normal_to_line = direction; } else { // default to vertical line for bad arguments - guide->normal = component_vectors[NR::X]; + guide->normal_to_line = component_vectors[Geom::X]; } } else { // default to vertical line for bad arguments - guide->normal = component_vectors[NR::X]; + guide->normal_to_line = component_vectors[Geom::X]; } - break; - case SP_ATTR_POSITION: - sp_svg_number_read_d(value, &guide->position); + sp_guide_set_normal(*guide, guide->normal_to_line, false); + } + break; + case SP_ATTR_POSITION: + { + gchar ** strarray = g_strsplit(value, ",", 2); + double newx, newy; + unsigned int success = sp_svg_number_read_d(strarray[0], &newx); + success += sp_svg_number_read_d(strarray[1], &newy); + g_strfreev (strarray); + if (success == 2) { + guide->point_on_line = Geom::Point(newx, newy); + } else if (success == 1) { + // before 0.46 style guideline definition. + const gchar *attr = SP_OBJECT_REPR(object)->attribute("orientation"); + if (attr && !strcmp(attr, "horizontal")) { + guide->point_on_line = Geom::Point(0, newx); + } else { + guide->point_on_line = Geom::Point(newx, 0); + } + } + // update position in non-committing way // fixme: perhaps we need to add an update method instead, and request_update here - sp_guide_moveto(*guide, guide->position, false); - break; - default: + sp_guide_moveto(*guide, guide->point_on_line, false); + } + break; + default: if (((SPObjectClass *) (parent_class))->set) { ((SPObjectClass *) (parent_class))->set(object, key, value); } @@ -209,12 +241,55 @@ static void sp_guide_set(SPObject *object, unsigned int key, const gchar *value) } } +SPGuide * +sp_guide_create(SPDesktop *desktop, Geom::Point const &pt1, Geom::Point const &pt2) { + SPDocument *doc=sp_desktop_document(desktop); + Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc); + + Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide"); + + Geom::Point n = Geom::rot90(pt2 - pt1); + + sp_repr_set_point(repr, "position", pt1); + sp_repr_set_point(repr, "orientation", n); + + SP_OBJECT_REPR(desktop->namedview)->appendChild(repr); + Inkscape::GC::release(repr); + + SPGuide *guide= SP_GUIDE(doc->getObjectByRepr(repr)); + return guide; +} + +void +sp_guide_pt_pairs_to_guides(SPDesktop *dt, std::list > &pts) { + for (std::list >::iterator i = pts.begin(); i != pts.end(); ++i) { + sp_guide_create(dt, (*i).first, (*i).second); + } +} + +void +sp_guide_create_guides_around_page(SPDesktop *dt) { + SPDocument *doc=sp_desktop_document(dt); + std::list > pts; + + Geom::Point A(0, 0); + Geom::Point C(sp_document_width(doc), sp_document_height(doc)); + Geom::Point B(C[Geom::X], 0); + Geom::Point D(0, C[Geom::Y]); + + pts.push_back(std::make_pair(A, B)); + pts.push_back(std::make_pair(B, C)); + pts.push_back(std::make_pair(C, D)); + pts.push_back(std::make_pair(D, A)); + + sp_guide_pt_pairs_to_guides(dt, pts); + + sp_document_done (doc, SP_VERB_NONE, _("Guides Around Page")); +} + void sp_guide_show(SPGuide *guide, SPCanvasGroup *group, GCallback handler) { - bool const vertical_line_p = ( guide->normal == component_vectors[NR::X] ); - g_assert(( guide->normal == component_vectors[NR::X] ) || - ( guide->normal == component_vectors[NR::Y] ) ); - SPCanvasItem *item = sp_guideline_new(group, guide->position, vertical_line_p ? Geom::Point(1.,0.) : Geom::Point(0.,1.)); + SPCanvasItem *item = sp_guideline_new(group, guide->point_on_line, guide->normal_to_line); sp_guideline_set_color(SP_GUIDELINE(item), guide->color); g_signal_connect(G_OBJECT(item), "event", G_CALLBACK(handler), guide); @@ -231,7 +306,7 @@ void sp_guide_hide(SPGuide *guide, SPCanvas *canvas) for (GSList *l = guide->views; l != NULL; l = l->next) { if (canvas == SP_CANVAS_ITEM(l->data)->canvas) { - gtk_object_destroy(GTK_OBJECT(l->data)); + sp_guideline_delete(SP_GUIDELINE(l->data)); guide->views = g_slist_remove(guide->views, l->data); return; } @@ -257,32 +332,36 @@ void sp_guide_sensitize(SPGuide *guide, SPCanvas *canvas, gboolean sensitive) g_assert_not_reached(); } -double sp_guide_position_from_pt(SPGuide const *guide, NR::Point const &pt) +Geom::Point sp_guide_position_from_pt(SPGuide const *guide, Geom::Point const &pt) +{ + return -(pt - guide->point_on_line); +} + +double sp_guide_distance_from_pt(SPGuide const *guide, Geom::Point const &pt) { - return dot(guide->normal, pt); + return Geom::dot(pt - guide->point_on_line, guide->normal_to_line); } /** * \arg commit False indicates temporary moveto in response to motion event while dragging, - * true indicates a "committing" version: in response to button release event after - * dragging a guideline, or clicking OK in guide editing dialog. + * true indicates a "committing" version: in response to button release event after + * dragging a guideline, or clicking OK in guide editing dialog. */ -void sp_guide_moveto(SPGuide const &guide, gdouble const position, bool const commit) +void sp_guide_moveto(SPGuide const &guide, Geom::Point const point_on_line, bool const commit) { g_assert(SP_IS_GUIDE(&guide)); for (GSList *l = guide.views; l != NULL; l = l->next) { - sp_guideline_set_position(SP_GUIDELINE(l->data), - position); + sp_guideline_set_position(SP_GUIDELINE(l->data), point_on_line); } - /* Calling sp_repr_set_svg_double must precede calling sp_item_notify_moveto in the commit + /* Calling sp_repr_set_point must precede calling sp_item_notify_moveto in the commit case, so that the guide's new position is available for sp_item_rm_unsatisfied_cns. */ if (commit) { - sp_repr_set_svg_double(SP_OBJECT(&guide)->repr, - "position", position); + sp_repr_set_point(SP_OBJECT(&guide)->repr, "position", point_on_line); } +/* DISABLED CODE BECAUSE SPGuideAttachment IS NOT USE AT THE MOMENT (johan) for (vector::const_iterator i(guide.attached_items.begin()), iEnd(guide.attached_items.end()); i != iEnd; ++i) @@ -290,31 +369,80 @@ void sp_guide_moveto(SPGuide const &guide, gdouble const position, bool const co SPGuideAttachment const &att = *i; sp_item_notify_moveto(*att.item, guide, att.snappoint_ix, position, commit); } +*/ +} + +/** + * \arg commit False indicates temporary moveto in response to motion event while dragging, + * true indicates a "committing" version: in response to button release event after + * dragging a guideline, or clicking OK in guide editing dialog. + */ +void sp_guide_set_normal(SPGuide const &guide, Geom::Point const normal_to_line, bool const commit) +{ + g_assert(SP_IS_GUIDE(&guide)); + + for (GSList *l = guide.views; l != NULL; l = l->next) { + sp_guideline_set_normal(SP_GUIDELINE(l->data), normal_to_line); + } + + /* Calling sp_repr_set_svg_point must precede calling sp_item_notify_moveto in the commit + case, so that the guide's new position is available for sp_item_rm_unsatisfied_cns. */ + if (commit) { + sp_repr_set_point(SP_OBJECT(&guide)->repr, "orientation", normal_to_line); + } + +/* DISABLED CODE BECAUSE SPGuideAttachment IS NOT USE AT THE MOMENT (johan) + for (vector::const_iterator i(guide.attached_items.begin()), + iEnd(guide.attached_items.end()); + i != iEnd; ++i) + { + SPGuideAttachment const &att = *i; + sp_item_notify_moveto(*att.item, guide, att.snappoint_ix, position, commit); + } +*/ } /** * Returns a human-readable description of the guideline for use in dialog boxes and status bar. + * If verbose is false, only positioning information is included (useful for dialogs). * * The caller is responsible for freeing the string. */ -char *sp_guide_description(SPGuide const *guide) +char *sp_guide_description(SPGuide const *guide, const bool verbose) { - using NR::X; - using NR::Y; - - if ( guide->normal == component_vectors[X] ) { - return g_strdup(_("vertical guideline")); - } else if ( guide->normal == component_vectors[Y] ) { - return g_strdup(_("horizontal guideline")); + using Geom::X; + using Geom::Y; + + GString *position_string_x = SP_PX_TO_METRIC_STRING(guide->point_on_line[X], + SP_ACTIVE_DESKTOP->namedview->getDefaultMetric()); + GString *position_string_y = SP_PX_TO_METRIC_STRING(guide->point_on_line[Y], + SP_ACTIVE_DESKTOP->namedview->getDefaultMetric()); + + gchar *shortcuts = g_strdup_printf("; %s", _("Shift+drag to rotate, Ctrl+drag to move origin, Del to delete")); + gchar *descr; + + if ( are_near(guide->normal_to_line, component_vectors[X]) || + are_near(guide->normal_to_line, -component_vectors[X]) ) { + descr = g_strdup_printf(_("vertical, at %s"), position_string_x->str); + } else if ( are_near(guide->normal_to_line, component_vectors[Y]) || + are_near(guide->normal_to_line, -component_vectors[Y]) ) { + descr = g_strdup_printf(_("horizontal, at %s"), position_string_y->str); } else { - double const radians = atan2(guide->normal[X], - guide->normal[Y]); - /* flip y axis and rotate 90 degrees to convert to line angle */ - double const degrees = ( radians / M_PI ) * 180.0; - int const degrees_int = (int) floor( degrees + .5 ); - return g_strdup_printf("%d degree guideline", degrees_int); - /* Alternative suggestion: "angled guideline". */ + double const radians = guide->angle(); + double const degrees = Geom::rad_to_deg(radians); + int const degrees_int = (int) round(degrees); + descr = g_strdup_printf(_("at %d degrees, through (%s,%s)"), + degrees_int, position_string_x->str, position_string_y->str); + } + + g_string_free(position_string_x, TRUE); + g_string_free(position_string_y, TRUE); + + if (verbose) { + descr = g_strconcat(descr, shortcuts, NULL); } + g_free(shortcuts); + return descr; } void sp_guide_remove(SPGuide *guide)