[caribou/keyboard_position: 9/19] Fixed more positioning things.

[Eitan Isaacson <eitani src gnome org>]

commit 7b04e086f744aa88939d8ab7b3c5f7573c7484fb
Author: Eitan Isaacson <eitan monotonous org>
Date:   Tue Dec 1 14:16:48 2009 -0800

    Fixed more positioning things.

 src/caribou.py  |   32 ++++++++++++++++++++++-------
 src/keyboard.py |   58 +++++++++++++++++++++++++++++++++++++++++++-----------
 2 files changed, 70 insertions(+), 20 deletions(-)
---
diff --git a/src/caribou.py b/src/caribou.py
index e6a5bd5..f52f8d1 100644
--- a/src/caribou.py
+++ b/src/caribou.py
@@ -42,17 +42,27 @@ class Test:
         text = acc.queryText() 
         [x, y, width, height] = text.getCharacterExtents(text.caretOffset, pyatspi.DESKTOP_COORDS)
         cp.set_cursor_location(gtk.gdk.Rectangle(x, y, width, height))
+        
+        component = acc.queryComponent()
+        entry_bb = component.getExtents(pyatspi.DESKTOP_COORDS)
+        cp.set_entry_location(entry_bb)
         cp.show_all()
        
     def __set_entry_location(self, acc):
         text = acc.queryText()
-        [x, y, width, height] = text.getCharacterExtents(text.caretOffset, pyatspi.DESKTOP_COORDS)
-        if x == 0 and y == 0 and width == 0 and height == 0:
-            component = acc.queryComponent()
-            bb = component.getExtents(pyatspi.DESKTOP_COORDS)
-            cp.set_cursor_location(gtk.gdk.Rectangle(bb.x, bb.y, bb.width, bb.height))
-        else:
-            cp.set_cursor_location(gtk.gdk.Rectangle(x, y, width, height))
+        cursor_bb = gdk.Rectangle(
+            *text.getCharacterExtents(text.caretOffset, 
+                                      pyatspi.DESKTOP_COORDS))
+
+        component = acc.queryComponent()
+        entry_bb = component.getExtents(pyatspi.DESKTOP_COORDS)
+
+        if cursor_bb == gdk.Rectangle(0, 0, 0, 0):
+            cursor_bb = entry_bb
+
+        cp.set_cursor_location(cursor_bb)
+        cp.set_entry_location(entry_bb)
+
         cp.show_all()
        
     def on_state_changed_focused(self, event):
@@ -160,7 +170,13 @@ if __name__ == "__main__":
     pyatspi.Registry.registerKeystrokeListener(test.on_key_down, mask = None, kind = (pyatspi.KEY_PRESSED_EVENT,))
 
     # TODO: move text entry detection to its own file
-    cp = keyboard.CaribouHoverWindow()
+    placement = keyboard.CaribouKeyboardPlacement(
+        xalign=keyboard.CaribouKeyboardPlacement.START,
+        xstickto=keyboard.CaribouKeyboardPlacement.ENTRY,
+        ystickto=keyboard.CaribouKeyboardPlacement.ENTRY,
+        xgravitate=keyboard.CaribouKeyboardPlacement.INSIDE,
+        ygravitate=keyboard.CaribouKeyboardPlacement.INSIDE)
+    cp = keyboard.CaribouHoverWindow(placement)
     cp.hide_all()
  
     gtk.main()
diff --git a/src/keyboard.py b/src/keyboard.py
index 0c8dc2b..c132421 100644
--- a/src/keyboard.py
+++ b/src/keyboard.py
@@ -144,15 +144,21 @@ class CaribouHoverWindow(CaribouWindow):
         return gdk.Rectangle(*args)
             
     def _update_position(self, placement=None):
+        root_bbox = self._get_root_bbox()
         placement = placement or self._default_placement
 
-        x = self._calculate_axis(placement.x)
-        y = self._calculate_axis(placement.y)
+        x = self._calculate_axis(placement.x, root_bbox)
+        y = self._calculate_axis(placement.y, root_bbox)
+
+        proposed_position = \
+            gdk.Rectangle(x, y, self.allocation.width, self.allocation.height)
+
+        x += placement.x.adjust_to_bounds(root_bbox, proposed_position)
+        y += placement.y.adjust_to_bounds(root_bbox, proposed_position)
 
         self.move(x, y)
 
-    def _calculate_axis(self, axis_placement):
-        root_bbox = self._get_root_bbox()
+    def _calculate_axis(self, axis_placement, root_bbox):
         bbox = root_bbox
 
         if axis_placement.stickto == CaribouKeyboardPlacement.CURSOR:
@@ -164,7 +170,12 @@ class CaribouHoverWindow(CaribouWindow):
 
         if axis_placement.align == CaribouKeyboardPlacement.END:
             offset += axis_placement.get_length(bbox)
-        elif axis_placement.halign == CaribouKeyboardPlacement.CENTER:
+            if axis_placement.gravitate == CaribouKeyboardPlacement.INSIDE:
+                offset -= axis_placement.get_length(self.allocation)
+        elif axis_placement.align == CaribouKeyboardPlacement.START:
+            if axis_placement.gravitate == CaribouKeyboardPlacement.OUTSIDE:
+                offset -= axis_placement.get_length(self.allocation)
+        elif axis_placement.align == CaribouKeyboardPlacement.CENTER:
             offset += axis_placement.get_length(bbox)/2
 
         return offset
@@ -182,11 +193,11 @@ class CaribouKeyboardPlacement(object):
     OUTSIDE = 'outside'
     
     class _AxisPlacement(object):
-        def __init__(self, axis, align=None, stickto=None, gravitate=None):
+        def __init__(self, axis, align, stickto, gravitate):
             self.axis = axis
-            self.align = align or CaribouKeyboardPlacement.END
-            self.stickto = stickto or CaribouKeyboardPlacement.CURSOR
-            self.gravitate = gravitate or CaribouKeyboardPlacement.OUTSIDE
+            self.align = align
+            self.stickto = stickto
+            self.gravitate = gravitate
 
         def copy(self, align=None, stickto=None, gravitate=None):
             return self.__class__(self.axis,
@@ -200,9 +211,32 @@ class CaribouKeyboardPlacement(object):
         def get_length(self, bbox):
             return bbox.width if self.axis == 'x' else bbox.height
 
-    def __init__(self, x=None, y=None):
-        self.x = x or self._AxisPlacement('x')
-        self.y = y or self._AxisPlacement('y')
+        def adjust_to_bounds(self, root_bbox, child_bbox):
+            child_vector_start = self.get_offset(child_bbox)
+            child_vector_end = self.get_length(child_bbox) + child_vector_start
+            root_vector_start = self.get_offset(root_bbox)
+            root_vector_end = self.get_length(root_bbox) + root_vector_start
+
+            if root_vector_end < child_vector_end:
+                return root_vector_end - child_vector_end
+
+            if root_vector_start > child_vector_start:
+                return root_vector_start - child_vector_start
+
+            return 0
+            
+
+    def __init__(self, 
+                 xalign=None, xstickto=None, xgravitate=None,
+                 yalign=None, ystickto=None, ygravitate=None):
+        self.x = self._AxisPlacement('x',
+                                     xalign or self.END,
+                                     xstickto or self.CURSOR,
+                                     xgravitate or self.OUTSIDE)
+        self.y = self._AxisPlacement('y',
+                                     yalign or self.END,
+                                     ystickto or self.CURSOR,
+                                     ygravitate or self.OUTSIDE)
 
 if __name__ == "__main__":
     ckbd = CaribouHoverWindow()