From bbde5dbeeb06611e99f9fa7f73dafe3bf70df01c Mon Sep 17 00:00:00 2001
From: Jabier Arraiza <jabier.arraiza@marker.es>
Date: Sun, 27 Aug 2017 12:55:26 +0200
Subject: Working on preview over powerpencil

---
 src/ui/tools/freehand-base.cpp | 65 +++++++++++++++++++++---------------------
 1 file changed, 32 insertions(+), 33 deletions(-)

(limited to 'src/ui/tools/freehand-base.cpp')

diff --git a/src/ui/tools/freehand-base.cpp b/src/ui/tools/freehand-base.cpp
index 05afd8058..fba3c8397 100644
--- a/src/ui/tools/freehand-base.cpp
+++ b/src/ui/tools/freehand-base.cpp
@@ -237,40 +237,36 @@ static void spdc_apply_powerstroke_shape(std::vector<Geom::Point> points, Freeha
         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
         if (prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 3) {
             SPShape *sp_shape = dynamic_cast<SPShape *>(item);
-            Geom::PathVector pathvector;
             if (sp_shape) {
-                pathvector = sp_shape->getCurve()->get_pathvector();
-                size_t counter = 0;
+                SPCurve * c = sp_shape->getCurve();
+                if (!c) {
+                    return;
+                }
                 auto wps = pt->wps.begin();
-                double previous_pos = 0.0;
                 for (auto pps = pt->pps.begin(); pps != pt->pps.end(); ++pps,++wps) {
-                    counter++;
-                    Geom::Affine transformCoordinate = item->i2dt_affine();
-                    Geom::Point position = *pps;
-                    position *= transformCoordinate.inverse();
-                    double pos = Geom::nearest_time(position, paths_to_pw(pathvector));
-                    double width = *wps;
-                    if(pos > 1e6) {
-                        pos = 0;;
-                    }
-                    if(pos > pathvector[0].size() ) {
-                        pos = pathvector[0].size();
-                    }
-                    if ((pos - previous_pos) < pt->min_distance || 
-                        (counter == pt->wps.size() || (pos - previous_pos) < 0.1) ) 
-                    {
-                        continue;
-                    }
-                    previous_pos = pos;
-                    if (!Geom::are_near(width, 0.0, 0.1) ) {
-                        points.push_back(Geom::Point(pos,width));
-                    }
+                    pt->addPowerStrokePoint(c, *pps, *wps);
+                }
+            }
+            if(pt->points.empty()){
+                //if use mouse give a line
+                double zoom = SP_EVENT_CONTEXT(dc)->desktop->current_zoom() * 5.0;
+                Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+                double min = prefs->getIntLimited("/tools/freehand/pencil/minpressure", 0, 1, 100) / 100.0;
+                double max = prefs->getIntLimited("/tools/freehand/pencil/maxpressure", 100, 1, 100) / 100.0;
+                if (min > max){
+                    min = max;
                 }
+                Geom::Affine transformCoordinate = SP_ITEM(SP_ACTIVE_DESKTOP->currentLayer())->i2dt_affine();
+                Geom::Coord scale = transformCoordinate.expansionX();
+                double pressure_shirnked = (1.0 * (max - min)) + min;
+                double pressure_computed = (pressure_shirnked * 8.0 * scale) / zoom;
+                pt->points.push_back(Geom::Point(0,pressure_computed));
             }
             Effect::createAndApply(POWERSTROKE, dc->desktop->doc(), item);
             Effect* lpe = SP_LPE_ITEM(item)->getCurrentLPE();
 
-            static_cast<LPEPowerStroke*>(lpe)->offset_points.param_set_and_write_new_value(points);
+            static_cast<LPEPowerStroke*>(lpe)->offset_points.param_set_and_write_new_value(pt->points);
+            pt->points.clear();
             return;
         }
     }
@@ -389,13 +385,7 @@ static void spdc_check_for_and_apply_waiting_LPE(FreehandBase *dc, SPItem *item,
         if (sp_shape) {
             curve = sp_shape->getCurve();
         }
-        if (SP_IS_PENCIL_CONTEXT(dc)) {
-            if (prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 3) {
-                std::vector<Geom::Point> points;
-                spdc_apply_powerstroke_shape(points, dc, item);
-                shape = NONE;
-            }
-        }
+
         bool shape_applied = false;
         SPCSSAttr *css_item = sp_css_attr_from_object(item, SP_STYLE_FLAG_ALWAYS);
         const char *cstroke = sp_repr_css_property(css_item, "stroke", "none");
@@ -407,6 +397,15 @@ static void spdc_check_for_and_apply_waiting_LPE(FreehandBase *dc, SPItem *item,
         if (!swidth) {
             swidth = swidth/2;
         }
+        if (SP_IS_PENCIL_CONTEXT(dc)) {
+            if (prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 3) {
+                std::vector<Geom::Point> points;
+                spdc_apply_powerstroke_shape(points, dc, item);
+                shape = NONE;
+                //To allow retain color
+                shape_applied = true;
+            }
+        }
 #define SHAPE_LENGTH 10
 #define SHAPE_HEIGHT 10
 
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