From 3cfa76ea9a229eb180410c7bd5359a1705c64b75 Mon Sep 17 00:00:00 2001
From: Tomeu Vizoso <tomeu@sugarlabs.org>
Date: Tue, 20 Jan 2009 19:50:03 +0000
Subject: Add selection of thoughts

---
diff --git a/canvas.py b/canvas.py
index d137f78..19f9ae0 100644
--- a/canvas.py
+++ b/canvas.py
@@ -134,6 +134,7 @@ class Canvas(gtk.DrawingArea):
             self.dragging_finished.send(self, position=(event.x, event.y),
                                         element=self._last_clicked_element)
             self._cleanup_drag()
+            return True
 
         return False
 
diff --git a/view.py b/view.py
index c4a1a3f..20ebdac 100644
--- a/view.py
+++ b/view.py
@@ -33,12 +33,15 @@ class MindMapView(Canvas):
         self._model = None
         self._row_deleted_sid = None
         self._row_inserted_sid = None
+        self._selected_thought = None
 
         Canvas.__init__(self)
 
         self.dragging_started.connect(self.__dragging_started_cb)
         self.dragging_finished.connect(self.__dragging_finished_cb)
 
+        self.connect('button-release-event', self.__button_release_event_cb)
+
         if model is not None:
             self.model = model
 
@@ -61,6 +64,20 @@ class MindMapView(Canvas):
             thought.model.x = x
             thought.model.y = y
 
+    def __button_release_event_cb(self, widget, event):
+        logging.debug('button_release_event_cb')
+
+        if self._selected_thought is not None:
+            self._selected_thought.selected = False
+            self._selected_thought = None
+
+        thought = self.get_element_at(event.x, event.y)
+        if thought is not None:
+            thought.selected = True
+            self._selected_thought = thought
+
+        return True
+
     def set_model(self, new_model):
         logging.debug('set_model %r' % new_model)
         if self._model == new_model:
@@ -109,7 +126,8 @@ class MindMapView(Canvas):
 
 class ThoughtView(CanvasElement):
 
-    _PADDING = style.zoom(10)
+    _PADDING = style.zoom(15)
+    _LINE_WIDTH = style.zoom(2)
 
     def __init__(self, model):
         CanvasElement.__init__(self)
@@ -118,6 +136,7 @@ class ThoughtView(CanvasElement):
         self._last_width = -1
         self._last_height = -1
         self._dragging = False
+        self._selected = False
         
         self.model.changed.connect(self.__model_changed_cb)
 
@@ -131,6 +150,13 @@ class ThoughtView(CanvasElement):
 
     dragging = property(get_dragging, set_dragging)
 
+    def set_selected(self, selected):
+        if self._selected != selected:
+            self._selected = selected
+            self.invalidate()
+
+    selected = property(None, set_selected)
+
     def _get_name_layout(self, context=None):
         if context is None:
             visual = gtk.gdk.screen_get_default().get_system_visual()
@@ -148,8 +174,16 @@ class ThoughtView(CanvasElement):
         return layout
 
     def draw(self, context):
-    
-        # draw background
+        self._draw_background(context)
+        width, height = self._draw_text(context)
+        self._draw_bounding_box(context, width, height)
+
+        self._last_width = width
+        self._last_height = height
+        
+        CanvasElement.draw(self, context)
+        
+    def _draw_background(self, context):
         if self.model.color is None or not self.model.color:
             color = style.Color('#FFFFFF')
         else:
@@ -161,13 +195,11 @@ class ThoughtView(CanvasElement):
         context.paint()
         context.restore()
 
-        if self._dragging:
-            context.set_source_rgb(0.8, 0.8, 0.8)
-        else:
-            context.set_source_rgb(0, 0, 0)
-
-        # draw text
+    def _draw_text(self, context):
         context.save()
+
+        context.set_source_rgb(0.0, 0.0, 0.0)
+
         layout = self._get_name_layout(context)
 
         width, height = layout.get_pixel_size()
@@ -180,21 +212,26 @@ class ThoughtView(CanvasElement):
         context.show_layout(layout)
         context.restore()
 
-        # draw bounding box
+        return width, height
+
+    def _draw_bounding_box(self, context, width, height):
         context.save()
-        context.set_line_width(4)
 
-        context.rectangle(self.model.x, self.model.y, width, height)
-        context.stroke()
-        context.restore()
-        
-        self._last_width = width
-        self._last_height = height
+        if self._selected or self._dragging:
+            context.set_source_rgb(0.6, 0.6, 0.6)
+            context.set_line_width(self._LINE_WIDTH * 2)
+        else:
+            context.set_source_rgb(0, 0, 0)
+            context.set_line_width(self._LINE_WIDTH)
         
-        CanvasElement.draw(self, context)
+        x = self.model.x + self._LINE_WIDTH / 2
+        y = self.model.y + self._LINE_WIDTH / 2
+        rect_width = width - self._LINE_WIDTH
+        rect_height = height - self._LINE_WIDTH
 
-    def get_size(self):
-        return self._last_width, self._last_height
+        context.rectangle(x, y, rect_width, rect_height)
+        context.stroke()
+        context.restore()
 
     def __model_changed_cb(self, **kwargs):
         self.x = self.model.x
--
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