This for you CR · Measure line, show the distance on rect lines CAD like with auto update

(bzr r15017.1.1)

2 files changed, 212 insertions, 0 deletions

diff --git a/src/live_effects/parameter/texttopath.cpp b/src/live_effects/parameter/texttopath.cpp
new file mode 100644
index 000000000..8625e4d71
--- /dev/null
+++ b/src/live_effects/parameter/texttopath.cpp
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) Maximilian Albert 2008 <maximilian.albert@gmail.com>
+ *
+ * Authors:
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include "ui/widget/registered-widget.h"
+#include <glibmm/i18n.h>
+
+#include "live_effects/parameter/texttopath.h"
+#include "live_effects/effect.h"
+#include "svg/svg.h"
+#include "svg/stringstream.h"
+#include "widgets/icon.h"
+#include "inkscape.h"
+#include "verbs.h"
+#include "display/canvas-text.h"
+
+#include <2geom/sbasis-geometric.h>
+
+namespace Inkscape {
+
+namespace LivePathEffect {
+
+TextToPathParam::TextToPathParam( const Glib::ustring& label, const Glib::ustring& tip,
+                      const Glib::ustring& key, Inkscape::UI::Widget::Registry* wr,
+                      Effect* effect, const Glib::ustring default_value )
+    : Parameter(label, tip, key, wr, effect),
+      value(default_value),
+      defvalue(default_value)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP; // FIXME: we shouldn't use this!
+    canvas_text = (SPCanvasText *) sp_canvastext_new(desktop->getTempGroup(), desktop, Geom::Point(0,0), "");
+    sp_canvastext_set_text (canvas_text, default_value.c_str());
+    sp_canvastext_set_coords (canvas_text, 0, 0);
+}
+
+void
+TextToPathParam::param_set_default()
+{
+    param_setValue(defvalue);
+}
+
+void
+TextToPathParam::setPos(Geom::Point pos)
+{
+    sp_canvastext_set_coords (canvas_text, pos);
+}
+
+void
+TextToPathParam::setPosAndAnchor(const Geom::Piecewise<Geom::D2<Geom::SBasis> > &pwd2,
+                           const double t, const double length, bool /*use_curvature*/)
+{
+    using namespace Geom;
+
+    Piecewise<D2<SBasis> > pwd2_reparam = arc_length_parametrization(pwd2, 2 , 0.1);
+    double t_reparam = pwd2_reparam.cuts.back() * t;
+    Point pos = pwd2_reparam.valueAt(t_reparam);
+    Point dir = unit_vector(derivative(pwd2_reparam).valueAt(t_reparam));
+    Point n = -rot90(dir);
+    double angle = Geom::angle_between(dir, Point(1,0));
+
+    sp_canvastext_set_coords(canvas_text, pos + n * length);
+    sp_canvastext_set_anchor_manually(canvas_text, std::sin(angle), -std::cos(angle));
+}
+
+void
+TextToPathParam::setAnchor(double x_value, double y_value)
+{
+    anchor_x = x_value;
+    anchor_y = y_value;
+    sp_canvastext_set_anchor_manually (canvas_text, anchor_x, anchor_y);
+}
+
+bool
+TextToPathParam::param_readSVGValue(const gchar * strvalue)
+{
+    param_setValue(strvalue);
+    return true;
+}
+
+gchar *
+TextToPathParam::param_getSVGValue() const
+{
+    return g_strdup(value.c_str());
+}
+
+Gtk::Widget *
+TextToPathParam::param_newWidget()
+{
+    Inkscape::UI::Widget::RegisteredText *rsu = Gtk::manage(new Inkscape::UI::Widget::RegisteredText(
+        param_label, param_tooltip, param_key, *param_wr, param_effect->getRepr(), param_effect->getSPDoc()));
+
+    rsu->setText(value.c_str());
+    rsu->setProgrammatically = false;
+
+    rsu->set_undo_parameters(SP_VERB_DIALOG_LIVE_PATH_EFFECT, _("Change text parameter"));
+
+    return dynamic_cast<Gtk::Widget *> (rsu);
+}
+
+void
+TextToPathParam::param_setValue(const Glib::ustring newvalue)
+{
+    value = newvalue;
+
+    sp_canvastext_set_text (canvas_text, newvalue.c_str());
+}
+
+} /* namespace LivePathEffect */
+
+} /* namespace Inkscape */
+
+/*
+  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 :
diff --git a/src/live_effects/parameter/texttopath.h b/src/live_effects/parameter/texttopath.h
new file mode 100644
index 000000000..9a0ee38e2
--- /dev/null
+++ b/src/live_effects/parameter/texttopath.h
@@ -0,0 +1,87 @@
+#ifndef INKSCAPE_LIVEPATHEFFECT_PARAMETER_TEXT_TO_PATH_H
+#define INKSCAPE_LIVEPATHEFFECT_PARAMETER_TEXT_TO_PATH_H
+
+/*
+ * Inkscape::LivePathEffectParameters
+ *
+ * Authors:
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include <glib.h>
+
+#include "display/canvas-bpath.h"
+#include "live_effects/parameter/parameter.h"
+
+struct SPCanvasText;
+
+namespace Inkscape {
+
+namespace LivePathEffect {
+
+class TextToPathParam : public Parameter {
+public:
+    TextToPathParam( const Glib::ustring& label,
+               const Glib::ustring& tip,
+               const Glib::ustring& key,
+               Inkscape::UI::Widget::Registry* wr,
+               Effect* effect,
+               const Glib::ustring default_value = "");
+    virtual ~TextToPathParam() {}
+
+    virtual Gtk::Widget * param_newWidget();
+
+    virtual bool param_readSVGValue(const gchar * strvalue);
+    virtual gchar * param_getSVGValue() const;
+
+    void param_setValue(const Glib::ustring newvalue);
+    virtual void param_set_default();
+    void setPos(Geom::Point pos);
+    void setPosAndAnchor(const Geom::Piecewise<Geom::D2<Geom::SBasis> > &pwd2,
+			 const double t, const double length, bool use_curvature = false);
+    void setAnchor(double x_value, double y_value);
+
+    const Glib::ustring get_value() const { return defvalue; };
+
+private:
+    TextToPathParam(const TextToPathParam&);
+    TextToPathParam& operator=(const TextToPathParam&);
+    double anchor_x;
+    double anchor_y;
+
+    Glib::ustring value;
+    Glib::ustring defvalue;
+
+    SPCanvasText *canvas_text;
+};
+
+/*
+ * This parameter does not display a widget in the LPE dialog; LPEs can use it to display on-canvas
+ * text that should not be settable by the user. Note that since no widget is provided, the
+ * parameter must be initialized differently than usual (only with a pointer to the parent effect;
+ * no label, no tooltip, etc.).
+ */
+class TextToPathParamInternal : public TextToPathParam {
+public:
+    TextToPathParamInternal(Effect* effect) :
+        TextToPathParam("", "", "", NULL, effect) {}
+
+    virtual Gtk::Widget * param_newWidget() { return NULL; }
+};
+
+} //namespace LivePathEffect
+
+} //namespace Inkscape
+
+#endif
+
+/*
+  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 :