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index 6618c2358a34ed0ac04e68c2f8de7224d40f56d7..6c97e260594936025172c46e88a9d06fc6c62374 100644 (file)
-#define SP_CANVAS_GRID_C
+#define INKSCAPE_CANVAS_GRID_C
/*
- * SPCGrid
*
+ * Copyright (C) Johan Engelen 2006-2007 <johan@shouraizou.nl>
* Copyright (C) Lauris Kaplinski 2000
*
*/
#include "sp-canvas-util.h"
-#include "canvas-grid.h"
#include "display-forward.h"
#include <libnr/nr-pixops.h>
+#include "desktop-handles.h"
+#include "helper/units.h"
+#include "svg/svg-color.h"
+#include "xml/node-event-vector.h"
+#include "sp-object.h"
+
+#include "sp-namedview.h"
+#include "inkscape.h"
+#include "desktop.h"
+
+#include "../document.h"
+
+#include "canvas-grid.h"
+#include "canvas-axonomgrid.h"
-enum {
- ARG_0,
- ARG_ORIGINX,
- ARG_ORIGINY,
- ARG_SPACINGX,
- ARG_SPACINGY,
- ARG_COLOR,
- ARG_EMPCOLOR,
- ARG_EMPSPACING
+namespace Inkscape {
+
+#define DEFAULTGRIDCOLOR 0x0000FF20
+#define DEFAULTGRIDEMPCOLOR 0x0000FF40
+
+const gchar *grid_name [] = {
+ N_("Rectangular grid"),
+ N_("Axonometric grid")
+};
+const gchar *grid_svgname [] = {
+ "xygrid",
+ "axonomgrid"
};
-static void sp_cgrid_class_init (SPCGridClass *klass);
-static void sp_cgrid_init (SPCGrid *grid);
-static void sp_cgrid_destroy (GtkObject *object);
-static void sp_cgrid_set_arg (GtkObject *object, GtkArg *arg, guint arg_id);
+// ##########################################################
+// Grid CanvasItem
+static void grid_canvasitem_class_init (GridCanvasItemClass *klass);
+static void grid_canvasitem_init (GridCanvasItem *grid);
+static void grid_canvasitem_destroy (GtkObject *object);
-static void sp_cgrid_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags);
-static void sp_cgrid_render (SPCanvasItem *item, SPCanvasBuf *buf);
+static void grid_canvasitem_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags);
+static void grid_canvasitem_render (SPCanvasItem *item, SPCanvasBuf *buf);
static SPCanvasItemClass * parent_class;
GtkType
-sp_cgrid_get_type (void)
+grid_canvasitem_get_type (void)
{
- static GtkType cgrid_type = 0;
-
- if (!cgrid_type) {
- GtkTypeInfo cgrid_info = {
- "SPCGrid",
- sizeof (SPCGrid),
- sizeof (SPCGridClass),
- (GtkClassInitFunc) sp_cgrid_class_init,
- (GtkObjectInitFunc) sp_cgrid_init,
+ static GtkType grid_canvasitem_type = 0;
+
+ if (!grid_canvasitem_type) {
+ GtkTypeInfo grid_canvasitem_info = {
+ "GridCanvasItem",
+ sizeof (GridCanvasItem),
+ sizeof (GridCanvasItemClass),
+ (GtkClassInitFunc) grid_canvasitem_class_init,
+ (GtkObjectInitFunc) grid_canvasitem_init,
NULL, NULL,
(GtkClassInitFunc) NULL
};
- cgrid_type = gtk_type_unique (sp_canvas_item_get_type (), &cgrid_info);
+ grid_canvasitem_type = gtk_type_unique (sp_canvas_item_get_type (), &grid_canvasitem_info);
}
- return cgrid_type;
+ return grid_canvasitem_type;
}
static void
-sp_cgrid_class_init (SPCGridClass *klass)
+grid_canvasitem_class_init (GridCanvasItemClass *klass)
{
GtkObjectClass *object_class;
SPCanvasItemClass *item_class;
parent_class = (SPCanvasItemClass*)gtk_type_class (sp_canvas_item_get_type ());
- gtk_object_add_arg_type ("SPCGrid::originx", GTK_TYPE_DOUBLE, GTK_ARG_WRITABLE, ARG_ORIGINX);
- gtk_object_add_arg_type ("SPCGrid::originy", GTK_TYPE_DOUBLE, GTK_ARG_WRITABLE, ARG_ORIGINY);
- gtk_object_add_arg_type ("SPCGrid::spacingx", GTK_TYPE_DOUBLE, GTK_ARG_WRITABLE, ARG_SPACINGX);
- gtk_object_add_arg_type ("SPCGrid::spacingy", GTK_TYPE_DOUBLE, GTK_ARG_WRITABLE, ARG_SPACINGY);
- gtk_object_add_arg_type ("SPCGrid::color", GTK_TYPE_INT, GTK_ARG_WRITABLE, ARG_COLOR);
- gtk_object_add_arg_type ("SPCGrid::empcolor", GTK_TYPE_INT, GTK_ARG_WRITABLE, ARG_EMPCOLOR);
- gtk_object_add_arg_type ("SPCGrid::empspacing", GTK_TYPE_INT, GTK_ARG_WRITABLE, ARG_EMPSPACING);
+ object_class->destroy = grid_canvasitem_destroy;
- object_class->destroy = sp_cgrid_destroy;
- object_class->set_arg = sp_cgrid_set_arg;
-
- item_class->update = sp_cgrid_update;
- item_class->render = sp_cgrid_render;
+ item_class->update = grid_canvasitem_update;
+ item_class->render = grid_canvasitem_render;
}
static void
-sp_cgrid_init (SPCGrid *grid)
+grid_canvasitem_init (GridCanvasItem *griditem)
{
- grid->origin[NR::X] = grid->origin[NR::Y] = 0.0;
- grid->spacing[NR::X] = grid->spacing[NR::Y] = 8.0;
- grid->color = 0x0000ff7f;
- grid->empcolor = 0x3F3FFF40;
- grid->empspacing = 5;
+ griditem->grid = NULL;
}
static void
-sp_cgrid_destroy (GtkObject *object)
+grid_canvasitem_destroy (GtkObject *object)
{
g_return_if_fail (object != NULL);
- g_return_if_fail (SP_IS_CGRID (object));
+ g_return_if_fail (INKSCAPE_IS_GRID_CANVASITEM (object));
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
+/**
+*/
static void
-sp_cgrid_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
-{
- SPCanvasItem *item = SP_CANVAS_ITEM (object);
- SPCGrid *grid = SP_CGRID (object);
-
- switch (arg_id) {
- case ARG_ORIGINX:
- grid->origin[NR::X] = GTK_VALUE_DOUBLE (* arg);
- sp_canvas_item_request_update (item);
- break;
- case ARG_ORIGINY:
- grid->origin[NR::Y] = GTK_VALUE_DOUBLE (* arg);
- sp_canvas_item_request_update (item);
- break;
- case ARG_SPACINGX:
- grid->spacing[NR::X] = GTK_VALUE_DOUBLE (* arg);
- if (grid->spacing[NR::X] < 0.01) grid->spacing[NR::X] = 0.01;
- sp_canvas_item_request_update (item);
- break;
- case ARG_SPACINGY:
- grid->spacing[NR::Y] = GTK_VALUE_DOUBLE (* arg);
- if (grid->spacing[NR::Y] < 0.01) grid->spacing[NR::Y] = 0.01;
- sp_canvas_item_request_update (item);
- break;
- case ARG_COLOR:
- grid->color = GTK_VALUE_INT (* arg);
- sp_canvas_item_request_update (item);
- break;
- case ARG_EMPCOLOR:
- grid->empcolor = GTK_VALUE_INT (* arg);
- sp_canvas_item_request_update (item);
- break;
- case ARG_EMPSPACING:
- grid->empspacing = GTK_VALUE_INT (* arg);
- // std::cout << "Emphasis Spacing: " << grid->empspacing << std::endl;
- sp_canvas_item_request_update (item);
- break;
- default:
- break;
+grid_canvasitem_render (SPCanvasItem * item, SPCanvasBuf * buf)
+{
+ GridCanvasItem *gridcanvasitem = INKSCAPE_GRID_CANVASITEM (item);
+
+ sp_canvas_prepare_buffer (buf);
+
+ if (gridcanvasitem->grid) gridcanvasitem->grid->Render(buf);
+}
+
+static void
+grid_canvasitem_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags)
+{
+ GridCanvasItem *gridcanvasitem = INKSCAPE_GRID_CANVASITEM (item);
+
+ if (parent_class->update)
+ (* parent_class->update) (item, affine, flags);
+
+ if (gridcanvasitem->grid) {
+ gridcanvasitem->grid->Update(affine, flags);
+
+ sp_canvas_request_redraw (item->canvas,
+ -1000000, -1000000,
+ 1000000, 1000000);
+
+ item->x1 = item->y1 = -1000000;
+ item->x2 = item->y2 = 1000000;
+ }
+}
+
+
+
+// ##########################################################
+// CanvasGrid
+
+ static Inkscape::XML::NodeEventVector const _repr_events = {
+ NULL, /* child_added */
+ NULL, /* child_removed */
+ CanvasGrid::on_repr_attr_changed,
+ NULL, /* content_changed */
+ NULL /* order_changed */
+ };
+
+CanvasGrid::CanvasGrid(SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument *in_doc)
+{
+ repr = in_repr;
+ doc = in_doc;
+ if (repr) {
+ repr->addListener (&_repr_events, this);
+ }
+
+ namedview = nv;
+ canvasitems = NULL;
+}
+
+CanvasGrid::~CanvasGrid()
+{
+ if (repr) {
+ repr->removeListenerByData (this);
+ }
+
+ while (canvasitems) {
+ gtk_object_destroy(GTK_OBJECT(canvasitems->data));
+ canvasitems = g_slist_remove(canvasitems, canvasitems->data);
+ }
+}
+
+
+
+const char *
+CanvasGrid::getName(GridType type)
+{
+ return _(grid_name[type]);
+}
+
+const char *
+CanvasGrid::getSVGName(GridType type)
+{
+ return grid_svgname[type];
+}
+
+GridType
+CanvasGrid::getGridTypeFromSVGName(const char * typestr)
+{
+ if (!typestr) return GRID_RECTANGULAR;
+
+ gint t = 0;
+ for (t = GRID_MAXTYPENR; t >= 0; t--) { //this automatically defaults to grid0 which is rectangular grid
+ if (!strcmp(typestr, grid_svgname[t])) break;
+ }
+ return (GridType) t;
+}
+
+GridType
+CanvasGrid::getGridTypeFromName(const char * typestr)
+{
+ if (!typestr) return GRID_RECTANGULAR;
+
+ gint t = 0;
+ for (t = GRID_MAXTYPENR; t >= 0; t--) { //this automatically defaults to grid0 which is rectangular grid
+ if (!strcmp(typestr, _(grid_name[t]))) break;
+ }
+ return (GridType) t;
+}
+
+
+/*
+* writes an <inkscape:grid> child to repr.
+*/
+void
+CanvasGrid::writeNewGridToRepr(Inkscape::XML::Node * repr, SPDocument * doc, GridType gridtype)
+{
+ if (!repr) return;
+ if (gridtype > GRID_MAXTYPENR) return;
+
+ // first create the child xml node, then hook it to repr. This order is important, to not set off listeners to repr before the new node is complete.
+
+ Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
+ Inkscape::XML::Node *newnode;
+ newnode = xml_doc->createElement("inkscape:grid");
+ newnode->setAttribute("type", getSVGName(gridtype));
+
+ repr->appendChild(newnode);
+// Inkscape::GC::release(repr); FIX THIS. THIS SHOULD BE HERE!!!
+
+ sp_document_done(doc, SP_VERB_DIALOG_NAMEDVIEW, _("Create new grid"));
+}
+
+/*
+* Creates a new CanvasGrid object of type gridtype
+*/
+CanvasGrid*
+CanvasGrid::NewGrid(SPNamedView * nv, Inkscape::XML::Node * repr, SPDocument * doc, GridType gridtype)
+{
+ if (!repr) return NULL;
+ if (!doc) {
+ g_error("CanvasGrid::NewGrid - doc==NULL");
+ return NULL;
+ }
+
+ switch (gridtype) {
+ case GRID_RECTANGULAR:
+ return (CanvasGrid*) new CanvasXYGrid(nv, repr, doc);
+ case GRID_AXONOMETRIC:
+ return (CanvasGrid*) new CanvasAxonomGrid(nv, repr, doc);
+ }
+
+ return NULL;
+}
+
+
+/**
+* creates a new grid canvasitem for the SPDesktop given as parameter. Keeps a link to this canvasitem in the canvasitems list.
+*/
+GridCanvasItem *
+CanvasGrid::createCanvasItem(SPDesktop * desktop)
+{
+ if (!desktop) return NULL;
+ //Johan: I think for multiple desktops it is best if each has their own canvasitem, but share the same CanvasGrid object; that is what this function is for.
+
+ // check if there is already a canvasitem on this desktop linking to this grid
+ for (GSList *l = canvasitems; l != NULL; l = l->next) {
+ if ( sp_desktop_gridgroup(desktop) == SP_CANVAS_GROUP(SP_CANVAS_ITEM(l->data)->parent) ) {
+ return NULL;
+ }
+ }
+
+ GridCanvasItem * item = INKSCAPE_GRID_CANVASITEM( sp_canvas_item_new(sp_desktop_gridgroup(desktop), INKSCAPE_TYPE_GRID_CANVASITEM, NULL) );
+ item->grid = this;
+ sp_canvas_item_show(SP_CANVAS_ITEM(item));
+
+ gtk_object_ref(GTK_OBJECT(item)); // since we're keeping a link to this item, we need to bump up the ref count
+ canvasitems = g_slist_prepend(canvasitems, item);
+
+ return item;
+}
+
+void
+CanvasGrid::on_repr_attr_changed (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive, void * data)
+{
+ if (!data)
+ return;
+
+ ((CanvasGrid*) data)->onReprAttrChanged(repr, key, oldval, newval, is_interactive);
+}
+
+
+
+// ##########################################################
+// CanvasXYGrid
+
+
+/**
+* "attach_all" function
+* A DIRECT COPY-PASTE FROM DOCUMENT-PROPERTIES.CPP TO QUICKLY GET RESULTS
+*
+ * Helper function that attachs widgets in a 3xn table. The widgets come in an
+ * array that has two entries per table row. The two entries code for four
+ * possible cases: (0,0) means insert space in first column; (0, non-0) means
+ * widget in columns 2-3; (non-0, 0) means label in columns 1-3; and
+ * (non-0, non-0) means two widgets in columns 2 and 3.
+**/
+#define SPACE_SIZE_X 15
+#define SPACE_SIZE_Y 10
+static inline void
+attach_all (Gtk::Table &table, const Gtk::Widget *arr[], unsigned size, int start = 0)
+{
+ for (unsigned i=0, r=start; i<size/sizeof(Gtk::Widget*); i+=2)
+ {
+ if (arr[i] && arr[i+1])
+ {
+ table.attach (const_cast<Gtk::Widget&>(*arr[i]), 1, 2, r, r+1,
+ Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
+ table.attach (const_cast<Gtk::Widget&>(*arr[i+1]), 2, 3, r, r+1,
+ Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
+ }
+ else
+ {
+ if (arr[i+1])
+ table.attach (const_cast<Gtk::Widget&>(*arr[i+1]), 1, 3, r, r+1,
+ Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
+ else if (arr[i])
+ {
+ Gtk::Label& label = reinterpret_cast<Gtk::Label&> (const_cast<Gtk::Widget&>(*arr[i]));
+ label.set_alignment (0.0);
+ table.attach (label, 0, 3, r, r+1,
+ Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
+ }
+ else
+ {
+ Gtk::HBox *space = manage (new Gtk::HBox);
+ space->set_size_request (SPACE_SIZE_X, SPACE_SIZE_Y);
+ table.attach (*space, 0, 1, r, r+1,
+ (Gtk::AttachOptions)0, (Gtk::AttachOptions)0,0,0);
+ }
+ }
+ ++r;
+ }
+}
+
+CanvasXYGrid::CanvasXYGrid (SPNamedView * nv, Inkscape::XML::Node * in_repr, SPDocument * in_doc)
+ : CanvasGrid(nv, in_repr, in_doc), table(1, 1)
+{
+ origin[NR::X] = origin[NR::Y] = 0.0;
+ color = DEFAULTGRIDCOLOR;
+ empcolor = DEFAULTGRIDEMPCOLOR;
+ empspacing = 5;
+ spacing[NR::X] = spacing[NR::Y] = 1.0;
+ gridunit = &sp_unit_get_by_id(SP_UNIT_PX);
+ render_dotted = false;
+
+ snapper = new CanvasXYGridSnapper(this, namedview, 0);
+
+ // initialize widgets:
+ vbox.set_border_width(2);
+ table.set_spacings(2);
+ vbox.pack_start(table, false, false, 0);
+
+ _rumg.init (_("Grid _units:"), "units", _wr, repr, doc);
+ _rsu_ox.init (_("_Origin X:"), _("X coordinate of grid origin"),
+ "originx", _rumg, _wr, repr, doc);
+ _rsu_oy.init (_("O_rigin Y:"), _("Y coordinate of grid origin"),
+ "originy", _rumg, _wr, repr, doc);
+ _rsu_sx.init (_("Spacing _X:"), _("Distance between vertical grid lines"),
+ "spacingx", _rumg, _wr, repr, doc);
+ _rsu_sy.init (_("Spacing _Y:"), _("Distance between horizontal grid lines"),
+ "spacingy", _rumg, _wr, repr, doc);
+ _rcp_gcol.init (_("Grid line _color:"), _("Grid line color"),
+ _("Color of grid lines"), "color", "opacity", _wr, repr, doc);
+ _rcp_gmcol.init (_("Ma_jor grid line color:"), _("Major grid line color"),
+ _("Color of the major (highlighted) grid lines"),
+ "empcolor", "empopacity", _wr, repr, doc);
+ _rsi.init (_("_Major grid line every:"), _("lines"), "empspacing", _wr, repr, doc);
+ _rcb_dotted.init ( _("_Show dots instead of lines"),
+ _("If set, displays dots at gridpoints instead of gridlines"),
+ "dotted", _wr, false, repr, doc);
+
+ const Gtk::Widget* widget_array[] =
+ {
+ _rumg._label, _rumg._sel,
+ 0, _rsu_ox.getSU(),
+ 0, _rsu_oy.getSU(),
+ 0, _rsu_sx.getSU(),
+ 0, _rsu_sy.getSU(),
+ _rcp_gcol._label, _rcp_gcol._cp,
+ 0, 0,
+ _rcp_gmcol._label, _rcp_gmcol._cp,
+ _rsi._label, &_rsi._hbox,
+ 0, _rcb_dotted._button,
+ };
+
+ attach_all (table, widget_array, sizeof(widget_array));
+
+ vbox.show();
+
+ if (repr) readRepr();
+ updateWidgets();
+}
+
+CanvasXYGrid::~CanvasXYGrid ()
+{
+ if (snapper) delete snapper;
+}
+
+
+/* fixme: Collect all these length parsing methods and think common sane API */
+
+static gboolean sp_nv_read_length(const gchar *str, guint base, gdouble *val, const SPUnit **unit)
+{
+ if (!str) {
+ return FALSE;
+ }
+
+ gchar *u;
+ gdouble v = g_ascii_strtod(str, &u);
+ if (!u) {
+ return FALSE;
+ }
+ while (isspace(*u)) {
+ u += 1;
+ }
+
+ if (!*u) {
+ /* No unit specified - keep default */
+ *val = v;
+ return TRUE;
+ }
+
+ if (base & SP_UNIT_DEVICE) {
+ if (u[0] && u[1] && !isalnum(u[2]) && !strncmp(u, "px", 2)) {
+ *unit = &sp_unit_get_by_id(SP_UNIT_PX);
+ *val = v;
+ return TRUE;
+ }
+ }
+
+ if (base & SP_UNIT_ABSOLUTE) {
+ if (!strncmp(u, "pt", 2)) {
+ *unit = &sp_unit_get_by_id(SP_UNIT_PT);
+ } else if (!strncmp(u, "mm", 2)) {
+ *unit = &sp_unit_get_by_id(SP_UNIT_MM);
+ } else if (!strncmp(u, "cm", 2)) {
+ *unit = &sp_unit_get_by_id(SP_UNIT_CM);
+ } else if (!strncmp(u, "m", 1)) {
+ *unit = &sp_unit_get_by_id(SP_UNIT_M);
+ } else if (!strncmp(u, "in", 2)) {
+ *unit = &sp_unit_get_by_id(SP_UNIT_IN);
+ } else {
+ return FALSE;
+ }
+ *val = v;
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static gboolean sp_nv_read_opacity(const gchar *str, guint32 *color)
+{
+ if (!str) {
+ return FALSE;
+ }
+
+ gchar *u;
+ gdouble v = g_ascii_strtod(str, &u);
+ if (!u) {
+ return FALSE;
+ }
+ v = CLAMP(v, 0.0, 1.0);
+
+ *color = (*color & 0xffffff00) | (guint32) floor(v * 255.9999);
+
+ return TRUE;
+}
+
+/** If the passed scalar is invalid (<=0), then set the widget and the scalar
+ to use the given old value.
+ @param oldVal old value to use if the new one is invalid
+ @param pTarget the scalar to validate
+ @param widget widget associated with the scalar
+*/
+static void validateScalar(double oldVal,
+ double* pTarget,
+ Inkscape::UI::Widget::RegisteredScalarUnit& widget)
+{
+ // Avoid nullness.
+ if ( pTarget == NULL )
+ return;
+
+ // Invalid new value?
+ if ( *pTarget <= 0 )
+ {
+ // If the old value is somehow invalid as well, then default to 1.
+ if ( oldVal <= 0 )
+ oldVal = 1;
+
+ // Reset the scalar and associated widget to the old value.
+ *pTarget = oldVal;
+ widget.setValue( *pTarget);
+ } //if
+
+} //validateScalar
+
+
+/** If the passed int is invalid (<=0), then set the widget and the int
+ to use the given old value.
+ @param oldVal old value to use if the new one is invalid
+ @param pTarget the int to validate
+ @param widget widget associated with the int
+*/
+static void validateInt(gint oldVal,
+ gint* pTarget,
+ Inkscape::UI::Widget::RegisteredSuffixedInteger& widget)
+{
+ // Avoid nullness.
+ if ( pTarget == NULL )
+ return;
+
+ // Invalid new value?
+ if ( *pTarget <= 0 )
+ {
+ // If the old value is somehow invalid as well, then default to 1.
+ if ( oldVal <= 0 )
+ oldVal = 1;
+
+ // Reset the int and associated widget to the old value.
+ *pTarget = oldVal;
+ widget.setValue( *pTarget);
+ } //if
+
+} //validateInt
+
+void
+CanvasXYGrid::readRepr()
+{
+ char buff[100];
+ gchar const* value;
+ if ( (value = repr->attribute("originx")) ) {
+ sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &origin[NR::X], &gridunit);
+ origin[NR::X] = sp_units_get_pixels(origin[NR::X], *(gridunit));
+
+ }
+ if ( (value = repr->attribute("originy")) ) {
+ sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &origin[NR::Y], &gridunit);
+ origin[NR::Y] = sp_units_get_pixels(origin[NR::Y], *(gridunit));
+ }
+
+ if ( (value = repr->attribute("spacingx")) ) {
+ double oldVal = spacing[NR::X];
+ sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &spacing[NR::X], &gridunit);
+ validateScalar( oldVal, &spacing[NR::X], _rsu_sx );
+ spacing[NR::X] = sp_units_get_pixels(spacing[NR::X], *(gridunit));
+
+ }
+ if ( (value = repr->attribute("spacingy")) ) {
+ double oldVal = spacing[NR::Y];
+ sp_nv_read_length(value, SP_UNIT_ABSOLUTE | SP_UNIT_DEVICE, &spacing[NR::Y], &gridunit);
+ validateScalar( oldVal, &spacing[NR::Y], _rsu_sy );
+ spacing[NR::Y] = sp_units_get_pixels(spacing[NR::Y], *(gridunit));
+
+ }
+
+ if ( (value = repr->attribute("color")) ) {
+ color = (color & 0xff) | sp_svg_read_color(value, color);
+ }
+
+ if ( (value = repr->attribute("empcolor")) ) {
+ empcolor = (empcolor & 0xff) | sp_svg_read_color(value, empcolor);
+ }
+
+ if ( (value = repr->attribute("opacity")) ) {
+ sp_nv_read_opacity(value, &color);
+ }
+ if ( (value = repr->attribute("empopacity")) ) {
+ sp_nv_read_opacity(value, &empcolor);
+ }
+
+ if ( (value = repr->attribute("empspacing")) ) {
+ gint oldVal = empspacing;
+ empspacing = atoi(value);
+ validateInt( oldVal, &empspacing, _rsi );
+ }
+
+ if ( (value = repr->attribute("dotted")) ) {
+ render_dotted = (strcmp(value,"true") == 0);
+ }
+
+ for (GSList *l = canvasitems; l != NULL; l = l->next) {
+ sp_canvas_item_request_update ( SP_CANVAS_ITEM(l->data) );
+ }
+
+ return;
+}
+
+/**
+ * Called when XML node attribute changed; updates dialog widgets if change was not done by widgets themselves.
+ */
+void
+CanvasXYGrid::onReprAttrChanged (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive)
+{
+ readRepr();
+
+ if ( ! (_wr.isUpdating()) )
+ updateWidgets();
+}
+
+
+
+
+Gtk::Widget &
+CanvasXYGrid::getWidget()
+{
+ return vbox;
+}
+
+
+/**
+ * Update dialog widgets from object's values.
+ */
+void
+CanvasXYGrid::updateWidgets()
+{
+ if (_wr.isUpdating()) return;
+
+ _wr.setUpdating (true);
+
+ _rumg.setUnit (gridunit);
+
+ gdouble val;
+ val = origin[NR::X];
+ val = sp_pixels_get_units (val, *(gridunit));
+ _rsu_ox.setValue (val);
+ val = origin[NR::Y];
+ val = sp_pixels_get_units (val, *(gridunit));
+ _rsu_oy.setValue (val);
+ val = spacing[NR::X];
+ double gridx = sp_pixels_get_units (val, *(gridunit));
+ _rsu_sx.setValue (gridx);
+ val = spacing[NR::Y];
+ double gridy = sp_pixels_get_units (val, *(gridunit));
+ _rsu_sy.setValue (gridy);
+
+ _rcp_gcol.setRgba32 (color);
+ _rcp_gmcol.setRgba32 (empcolor);
+ _rsi.setValue (empspacing);
+
+ _wr.setUpdating (false);
+
+ return;
+}
+
+
+
+void
+CanvasXYGrid::Update (NR::Matrix const &affine, unsigned int flags)
+{
+ ow = origin * affine;
+ sw = spacing * affine;
+ sw -= NR::Point(affine[4], affine[5]);
+
+ for(int dim = 0; dim < 2; dim++) {
+ gint scaling_factor = empspacing;
+
+ if (scaling_factor <= 1)
+ scaling_factor = 5;
+
+ scaled[dim] = FALSE;
+ sw[dim] = fabs (sw[dim]);
+ while (sw[dim] < 8.0) {
+ scaled[dim] = TRUE;
+ sw[dim] *= scaling_factor;
+ /* First pass, go up to the major line spacing, then
+ keep increasing by two. */
+ scaling_factor = 2;
+ }
}
}
+
static void
-sp_grid_hline (SPCanvasBuf *buf, gint y, gint xs, gint xe, guint32 rgba)
+grid_hline (SPCanvasBuf *buf, gint y, gint xs, gint xe, guint32 rgba)
{
if ((y >= buf->rect.y0) && (y < buf->rect.y1)) {
guint r, g, b, a;
x1 = MIN (buf->rect.x1, xe + 1);
p = buf->buf + (y - buf->rect.y0) * buf->buf_rowstride + (x0 - buf->rect.x0) * 3;
for (x = x0; x < x1; x++) {
- p[0] = NR_COMPOSEN11 (r, a, p[0]);
- p[1] = NR_COMPOSEN11 (g, a, p[1]);
- p[2] = NR_COMPOSEN11 (b, a, p[2]);
+ p[0] = NR_COMPOSEN11_1111 (r, a, p[0]);
+ p[1] = NR_COMPOSEN11_1111 (g, a, p[1]);
+ p[2] = NR_COMPOSEN11_1111 (b, a, p[2]);
p += 3;
}
}
}
static void
-sp_grid_vline (SPCanvasBuf *buf, gint x, gint ys, gint ye, guint32 rgba)
+grid_vline (SPCanvasBuf *buf, gint x, gint ys, gint ye, guint32 rgba)
{
if ((x >= buf->rect.x0) && (x < buf->rect.x1)) {
guint r, g, b, a;
y1 = MIN (buf->rect.y1, ye + 1);
p = buf->buf + (y0 - buf->rect.y0) * buf->buf_rowstride + (x - buf->rect.x0) * 3;
for (y = y0; y < y1; y++) {
- p[0] = NR_COMPOSEN11 (r, a, p[0]);
- p[1] = NR_COMPOSEN11 (g, a, p[1]);
- p[2] = NR_COMPOSEN11 (b, a, p[2]);
+ p[0] = NR_COMPOSEN11_1111 (r, a, p[0]);
+ p[1] = NR_COMPOSEN11_1111 (g, a, p[1]);
+ p[2] = NR_COMPOSEN11_1111 (b, a, p[2]);
p += buf->buf_rowstride;
}
}
}
-/**
- \brief This function renders the grid on a particular canvas buffer
- \param item The grid to render on the buffer
- \param buf The buffer to render the grid on
-
- This function gets called a touch more than you might believe,
- about once per tile. This means that it could probably be optimized
- and help things out.
-
- Basically this function has to determine where in the canvas it is,
- and how that associates with the grid. It does this first by looking
- at the bounding box of the buffer, and then calculates where the grid
- starts in that buffer. It will then step through grid lines until
- it is outside of the buffer.
-
- For each grid line it is drawn using the function \c sp_grid_hline
- or \c sp_grid_vline. These are convience functions for the sake
- of making the function easier to read.
-
- Also, there are emphisized lines on the grid. While the \c syg and
- \c sxg variable track grid positioning, the \c xlinestart and \c
- ylinestart variables track the 'count' of what lines they are. If
- that count is a multiple of the line seperation between emphisis
- lines, then that line is drawn in the emphisis color.
-*/
static void
-sp_cgrid_render (SPCanvasItem * item, SPCanvasBuf * buf)
+grid_dot (SPCanvasBuf *buf, gint x, gint y, guint32 rgba)
{
- SPCGrid *grid = SP_CGRID (item);
-
- sp_canvas_prepare_buffer (buf);
-
- const gdouble sxg = floor ((buf->rect.x0 - grid->ow[NR::X]) / grid->sw[NR::X]) * grid->sw[NR::X] + grid->ow[NR::X];
- const gint xlinestart = (gint) Inkscape::round((sxg - grid->ow[NR::X]) / grid->sw[NR::X]);
- const gdouble syg = floor ((buf->rect.y0 - grid->ow[NR::Y]) / grid->sw[NR::Y]) * grid->sw[NR::Y] + grid->ow[NR::Y];
- const gint ylinestart = (gint) Inkscape::round((syg - grid->ow[NR::Y]) / grid->sw[NR::Y]);
-
- gint ylinenum;
- gdouble y;
- for (y = syg, ylinenum = ylinestart; y < buf->rect.y1; y += grid->sw[NR::Y], ylinenum++) {
- const gint y0 = (gint) Inkscape::round(y);
- const gint y1 = (gint) Inkscape::round(y + grid->sw[NR::Y]);
+ if ( (y >= buf->rect.y0) && (y < buf->rect.y1)
+ && (x >= buf->rect.x0) && (x < buf->rect.x1) ) {
+ guint r, g, b, a;
+ guchar *p;
+ r = NR_RGBA32_R (rgba);
+ g = NR_RGBA32_G (rgba);
+ b = NR_RGBA32_B (rgba);
+ a = NR_RGBA32_A (rgba);
+ p = buf->buf + (y - buf->rect.y0) * buf->buf_rowstride + (x - buf->rect.x0) * 3;
+ p[0] = NR_COMPOSEN11_1111 (r, a, p[0]);
+ p[1] = NR_COMPOSEN11_1111 (g, a, p[1]);
+ p[2] = NR_COMPOSEN11_1111 (b, a, p[2]);
+ }
+}
- if (!grid->scaled[NR::Y] &&
- (ylinenum % grid->empspacing) == 0) {
- sp_grid_hline (buf, y0, buf->rect.x0, buf->rect.x1 - 1, grid->empcolor);
- } else {
- sp_grid_hline (buf, y0, buf->rect.x0, buf->rect.x1 - 1, grid->color);
+void
+CanvasXYGrid::Render (SPCanvasBuf *buf)
+{
+ const gdouble sxg = floor ((buf->rect.x0 - ow[NR::X]) / sw[NR::X]) * sw[NR::X] + ow[NR::X];
+ const gint xlinestart = (gint) Inkscape::round((sxg - ow[NR::X]) / sw[NR::X]);
+ const gdouble syg = floor ((buf->rect.y0 - ow[NR::Y]) / sw[NR::Y]) * sw[NR::Y] + ow[NR::Y];
+ const gint ylinestart = (gint) Inkscape::round((syg - ow[NR::Y]) / sw[NR::Y]);
+
+ if (!render_dotted) {
+ gint ylinenum;
+ gdouble y;
+ for (y = syg, ylinenum = ylinestart; y < buf->rect.y1; y += sw[NR::Y], ylinenum++) {
+ const gint y0 = (gint) Inkscape::round(y);
+
+ if (!scaled[NR::Y] && (ylinenum % empspacing) == 0) {
+ grid_hline (buf, y0, buf->rect.x0, buf->rect.x1 - 1, empcolor);
+ } else {
+ grid_hline (buf, y0, buf->rect.x0, buf->rect.x1 - 1, color);
+ }
}
-
+
gint xlinenum;
gdouble x;
- for (x = sxg, xlinenum = xlinestart; x < buf->rect.x1; x += grid->sw[NR::X], xlinenum++) {
+ for (x = sxg, xlinenum = xlinestart; x < buf->rect.x1; x += sw[NR::X], xlinenum++) {
const gint ix = (gint) Inkscape::round(x);
- if (!grid->scaled[NR::X] &&
- (xlinenum % grid->empspacing) == 0) {
- sp_grid_vline (buf, ix, y0 + 1, y1 - 1, grid->empcolor);
+ if (!scaled[NR::X] && (xlinenum % empspacing) == 0) {
+ grid_vline (buf, ix, buf->rect.y0, buf->rect.y1, empcolor);
} else {
- sp_grid_vline (buf, ix, y0 + 1, y1 - 1, grid->color);
+ grid_vline (buf, ix, buf->rect.y0, buf->rect.y1, color);
}
}
+ } else {
+ gint ylinenum;
+ gdouble y;
+ for (y = syg, ylinenum = ylinestart; y < buf->rect.y1; y += sw[NR::Y], ylinenum++) {
+ const gint iy = (gint) Inkscape::round(y);
+
+ gint xlinenum;
+ gdouble x;
+ for (x = sxg, xlinenum = xlinestart; x < buf->rect.x1; x += sw[NR::X], xlinenum++) {
+ const gint ix = (gint) Inkscape::round(x);
+ if ( (!scaled[NR::X] && (xlinenum % empspacing) == 0)
+ || (!scaled[NR::Y] && (ylinenum % empspacing) == 0) )
+ {
+ grid_dot (buf, ix, iy, empcolor | (guint32)0x000000FF); // put alpha to max value
+ }
+ else
+ {
+ grid_dot (buf, ix, iy, color | (guint32)0x000000FF); // put alpha to max value
+ }
+ }
+
+ }
}
}
-static void
-sp_cgrid_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags)
+
+
+
+/**
+ * \return x rounded to the nearest multiple of c1 plus c0.
+ *
+ * \note
+ * If c1==0 (and c0 is finite), then returns +/-inf. This makes grid spacing of zero
+ * mean "ignore the grid in this dimention". We're currently discussing "good" semantics
+ * for guide/grid snapping.
+ */
+
+/* FIXME: move this somewhere else, perhaps */
+static double round_to_nearest_multiple_plus(double x, double const c1, double const c0)
{
- SPCGrid *grid = SP_CGRID (item);
+ return floor((x - c0) / c1 + .5) * c1 + c0;
+}
- if (parent_class->update)
- (* parent_class->update) (item, affine, flags);
+CanvasXYGridSnapper::CanvasXYGridSnapper(CanvasXYGrid *grid, SPNamedView const *nv, NR::Coord const d) : LineSnapper(nv, d)
+{
+ this->grid = grid;
+}
- grid->ow = grid->origin * affine;
- grid->sw = grid->spacing * affine;
- grid->sw -= NR::Point(affine[4], affine[5]);
+LineSnapper::LineList
+CanvasXYGridSnapper::_getSnapLines(NR::Point const &p) const
+{
+ LineList s;
- for(int dim = 0; dim < 2; dim++) {
- gint scaling_factor = grid->empspacing;
+ if ( grid == NULL ) {
+ return s;
+ }
- if (scaling_factor <= 1)
- scaling_factor = 5;
+ for (unsigned int i = 0; i < 2; ++i) {
- grid->scaled[dim] = FALSE;
- grid->sw[dim] = fabs (grid->sw[dim]);
- while (grid->sw[dim] < 8.0) {
- grid->scaled[dim] = TRUE;
- grid->sw[dim] *= scaling_factor;
- /* First pass, go up to the major line spacing, then
- keep increasing by two. */
- scaling_factor = 2;
+ /* This is to make sure we snap to only visible grid lines */
+ double scaled_spacing = grid->sw[i]; // this is spacing of visible lines if screen pixels
+
+ // convert screen pixels to px
+ // FIXME: after we switch to snapping dist in screen pixels, this will be unnecessary
+ if (SP_ACTIVE_DESKTOP) {
+ scaled_spacing /= SP_ACTIVE_DESKTOP->current_zoom();
}
- }
- if (grid->empspacing == 0) {
- grid->scaled[NR::Y] = TRUE;
- grid->scaled[NR::X] = TRUE;
+ NR::Coord const rounded = round_to_nearest_multiple_plus(p[i],
+ scaled_spacing,
+ grid->origin[i]);
+
+ s.push_back(std::make_pair(NR::Dim2(i), rounded));
}
- sp_canvas_request_redraw (item->canvas,
- -1000000, -1000000,
- 1000000, 1000000);
-
- item->x1 = item->y1 = -1000000;
- item->x2 = item->y2 = 1000000;
+ return s;
}
+
+
+
+
+}; /* namespace Inkscape */
+
/*
Local Variables:
mode:c++