Cyclone-Team/gramps
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Allow lateral move placement of Fan Chart

Browse Source 
svn: r13564
This commit is contained in:
Doug Blank 2009-11-13 01:57:40 +00:00
parent 7da5541920
commit 2a1aa5e5ad
1 changed files with 24 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
src/plugins/gramplet/FanChartGramplet.py
View File

@ -106,6 +106,7 @@ class FanChartWidget(gtk.Widget):
See main() of FanChartGramplet for example of model format.
"""
gtk.Widget.__init__(self)
self.translating = False
self.last_x, self.last_y = None, None
self.connect("button_release_event", self.on_mouse_up)
self.connect("motion_notify_event", self.on_mouse_move)
@ -121,6 +122,7 @@ class FanChartWidget(gtk.Widget):
## from the font size? I have no idea.
self.generations = generations
self.rotate_value = 90 # degrees, initially, 1st gen male on right half
self.center_xy = [0, 0] # distance from center (x, y)
self.set_generations(self.generations)
self.center = 50 # pixel radius of center
self.layout = self.create_pango_layout('cairo')
@ -214,7 +216,7 @@ class FanChartWidget(gtk.Widget):
The main method to do the drawing.
"""
x, y, w, h = self.allocation
cr.translate(w/2., h/2.)
cr.translate(w/2. - self.center_xy[0], h/2. - self.center_xy[1])
cr.save()
cr.rotate(self.rotate_value * math.pi/180)
for generation in range(self.generations - 1, 0, -1):
@ -453,15 +455,23 @@ class FanChartWidget(gtk.Widget):
def on_mouse_up(self, widget, event):
# Done with mouse movement
if self.last_x is None or self.last_y is None: return True
self.queue_draw()
if self.translating:
self.translating = False
x, y, w, h = self.allocation
self.center_xy = w/2 - event.x, h/2 - event.y
self.last_x, self.last_y = None, None
self.queue_draw()
return True
def on_mouse_move(self, widget, event):
if self.last_x is None or self.last_y is None: return False
x, y, w, h = self.allocation
cx = w/2
cy = h/2
if self.translating:
self.center_xy = w/2 - event.x, h/2 - event.y
self.queue_draw()
return True
cx = w/2 - self.center_xy[0]
cy = h/2 - self.center_xy[1]
# get the angles of the two points from the center:
start_angle = math.atan2(event.y - cy, event.x - cx)
end_angle = math.atan2(self.last_y - cy, self.last_x - cx)
@ -479,8 +489,9 @@ class FanChartWidget(gtk.Widget):
def on_mouse_down(self, widget, event):
# compute angle, radius, find out who would be there (rotated)
x, y, w, h = self.allocation
cx = w/2
cy = h/2
self.translating = False # keep track of up/down/left/right movement
cx = w/2 - self.center_xy[0]
cy = h/2 - self.center_xy[1]
radius = math.sqrt((event.x - cx) ** 2 + (event.y - cy) ** 2)
if radius < self.center:
generation = 0
@ -502,6 +513,13 @@ class FanChartWidget(gtk.Widget):
selected = p
break
# Handle the click:
if generation == 0:
# left mouse on center:
if event.button == 1: # left mouse
# save the mouse location for movements
self.translating = True
self.last_x, self.last_y = event.x, event.y
return True
if selected is None: # clicked in open area, or center
if radius < self.center:
# right mouse