1 files changed, 75 insertions, 26 deletions

diff --git a/dgedit/canvastoolselections.cc b/dgedit/canvastoolselections.cc
index 30f8970..d0aa481 100644
--- a/dgedit/canvastoolselections.cc
+++ b/dgedit/canvastoolselections.cc
@@ -34,8 +34,9 @@
 #define unmapX(x) canvas->unmapX(x)
 #define unmapY(x) canvas->unmapY(x)
 
-CanvasToolSelections::CanvasToolSelections(Canvas *c, Selections &s)
-  : selections(s)
+CanvasToolSelections::CanvasToolSelections(Canvas *c, Selections &s,
+                                           Selections &p)
+  : selections(s), selections_preview(p)
 {
   threshold = 0.5; // Default from CanvasToolThreshold
 
@@ -48,7 +49,8 @@ CanvasToolSelections::CanvasToolSelections(Canvas *c, Selections &s)
   colSel = QColor(255, 0, 0, 160);
   colActiveSelBg = QColor(255, 255, 0, 60);
   colActiveSel = QColor(255, 255, 0, 160);
-
+  colPreviewSelBg = QColor(0, 0, 255, 60);
+  colPreviewSel = QColor(0, 0, 255, 160);
 }
 
 bool CanvasToolSelections::mouseMoveEvent(QMouseEvent *event)
@@ -162,29 +164,54 @@ void CanvasToolSelections::paintEvent(QPaintEvent *event, QPainter &painter)
   int pos = unmapX(event->rect().x());
   int width = unmapX(event->rect().width());
 
-  QVector<sel_id_t> ids = selections.ids();
-  QVector<sel_id_t>::iterator i = ids.begin();
-  while(i != ids.end()) {
-    Selection sel = selections.get(*i);
-    int from = sel.from;
-    int to = sel.to;
-    int fadein = sel.fadein;
-    int fadeout = sel.fadeout;
-    if(from > pos + width || to + width < pos) { i++; continue; }
-    if(selections.active() == *i) {
-      painter.setBrush(colActiveSelBg);
-      painter.setPen(colActiveSel);
-    } else {
-      painter.setBrush(colSelBg);
-      painter.setPen(colSel);
+  {
+    QVector<sel_id_t> ids = selections.ids();
+    QVector<sel_id_t>::iterator i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections.get(*i);
+      int from = sel.from;
+      int to = sel.to;
+      int fadein = sel.fadein;
+      int fadeout = sel.fadeout;
+      if(from > pos + width || to + width < pos) { i++; continue; }
+      if(selections.active() == *i) {
+        painter.setBrush(colActiveSelBg);
+        painter.setPen(colActiveSel);
+      } else {
+        painter.setBrush(colSelBg);
+        painter.setPen(colSel);
+      }
+      painter.drawRect(mapX(from), mapY(-1.0),
+                       mapX(to) - mapX(from), mapY(1.0) - mapY(-1.0));
+      painter.drawLine(mapX(from), mapY(0.0), mapX(from + fadein), mapY(-1.0));
+      painter.drawLine(mapX(from), mapY(0.0), mapX(from + fadein), mapY(1.0));
+      painter.drawLine(mapX(to - fadeout), mapY(-1.0), mapX(to), mapY(0.0));
+      painter.drawLine(mapX(to - fadeout), mapY(1.0), mapX(to), mapY(0.0));
+      i++;
+    }
+  }
+
+  if(show_preview) {
+    QVector<sel_id_t> ids = selections_preview.ids();
+    QVector<sel_id_t>::iterator i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections_preview.get(*i);
+      int from = sel.from;
+      int to = sel.to;
+      int fadein = sel.fadein;
+      int fadeout = sel.fadeout;
+      if(from > pos + width || to + width < pos) { i++; continue; }
+      painter.setBrush(colPreviewSelBg);
+      painter.setPen(colPreviewSel);
+      
+      painter.drawRect(mapX(from), mapY(-1.0),
+                       mapX(to) - mapX(from), mapY(1.0) - mapY(-1.0));
+      painter.drawLine(mapX(from), mapY(0.0), mapX(from + fadein), mapY(-1.0));
+      painter.drawLine(mapX(from), mapY(0.0), mapX(from + fadein), mapY(1.0));
+      painter.drawLine(mapX(to - fadeout), mapY(-1.0), mapX(to), mapY(0.0));
+      painter.drawLine(mapX(to - fadeout), mapY(1.0), mapX(to), mapY(0.0));
+      i++;
     }
-    painter.drawRect(mapX(from), mapY(-1.0),
-                     mapX(to) - mapX(from), mapY(1.0) - mapY(-1.0));
-    painter.drawLine(mapX(from), mapY(0.0), mapX(from + fadein), mapY(-1.0));
-    painter.drawLine(mapX(from), mapY(0.0), mapX(from + fadein), mapY(1.0));
-    painter.drawLine(mapX(to - fadeout), mapY(-1.0), mapX(to), mapY(0.0));
-    painter.drawLine(mapX(to - fadeout), mapY(1.0), mapX(to), mapY(0.0));
-    i++;
   }
 }
 
@@ -214,9 +241,21 @@ void CanvasToolSelections::fadeoutChanged(int t)
 
 void CanvasToolSelections::autoCreateSelections()
 {
+  doAutoCreateSelections(false);
+}
+
+void CanvasToolSelections::autoCreateSelectionsPreview()
+{
+  doAutoCreateSelections(true);
+}
+
+void CanvasToolSelections::doAutoCreateSelections(bool preview)
+{
   float *data = canvas->data;
   size_t size = canvas->size;
 
+  if(preview) selections_preview.clear();
+
   for(size_t i = 0; i < size; i++) {
     if(fabs(data[i]) > fabs(threshold)) {
       int from = i;
@@ -247,7 +286,11 @@ void CanvasToolSelections::autoCreateSelections()
       }
 
       Selection s(from, to, 2, ((to - from) / 3) * fadeout);
-      selections.add(s);
+      if(preview) {
+        selections_preview.add(s);
+      } else {
+        selections.add(s);
+      }
 
       i = to+1;
     }
@@ -263,3 +306,9 @@ void CanvasToolSelections::clearSelections()
   canvas->setCursor(Qt::ArrowCursor);
   canvas->update();
 }
+
+void CanvasToolSelections::setShowPreview(bool s)
+{
+  show_preview = s;
+  canvas->update();
+}