canvas resizing

svn path=/trunk/matplotlib/; revision=1744

Author: jdh2358

CHANGELOG

@@ -1,5 +1,11 @@
 New entries should be added at the top
 
+2005-09-09 Added support for auto canvas resizing with
+           fig.set_figsize_inches(9,5,forward=True) # inches
+           OR
+           fig.resize(400,300)  # pixels
+
+
 2005-09-07 figure.py: update Figure.draw() to use the updated
            renderer.draw_image() so that examples/figimage_demo.py works again.
            examples/stock_demo.py: remove data_clipping (which no longer

lib/matplotlib/backend_bases.py

@@ -720,6 +720,12 @@ def blit(self, bbox=None):
         """
         pass
 
+    def resize(self, w, h):
+        """
+        set the canvas size in pixels
+        """
+        pass
+    
     def draw_event(self, renderer):
         event = DrawEvent('draw_event', self, renderer)
         for func in self.callbacks.get('draw_event', {}).values():

lib/matplotlib/backends/backend_gtk.py

@@ -141,6 +141,19 @@ def __init__(self, figure):
 
         self._renderer_init()
 
+
+    def resize(self, w, h):
+        'set the drawing area size in pixels'
+        winw, winh = self.parent.parent.get_size()
+        tmp, tmp, myw, myh = self.get_allocation()
+
+        padw = winw-myw
+        padh = winh-myh
+
+        neww = w+padw)
+        newh = h+padh
+        self.parent.parent.resize(neww, newh)
+
     def button_press_event(self, widget, event):
         if _debug: print 'FigureCanvasGTK.%s' % fn_name()
         x = event.x

lib/matplotlib/figure.py

@@ -236,22 +236,34 @@ def figimage(self, X,
         return im
 
 
-    def set_figsize_inches(self, *args):
+    def set_figsize_inches(self, *args, **kwargs):
         """
         Set the figure size in inches
 
         Usage: set_figsize_inches(self, w,h)  OR
                set_figsize_inches(self, (w,h) )
 
+        optional kwarg forward=True will cause the canvas size to be
+        automatically updated; eg you can resize the figure window
+        from the shell
+        
         ACCEPTS: a w,h tuple with w,h in inches
         """
+
+        forward = kwargs.get('forward', False)
         if len(args)==1:
             w,h = args[0]
         else:
             w,h = args
         self.figwidth.set(w)
         self.figheight.set(h)
 
+        if forward:
+            dpival = self.dpi.get()
+            canvasw = w*dpival
+            canvash = h*dpival
+            self.canvas.resize(int(canvasw), int(canvash))
+
     def get_size_inches(self):
         return self.figwidth.get(), self.figheight.get()
 

lib/matplotlib/finance.py

@@ -25,6 +25,36 @@
 from pylab import gca
 
 
+
+def parse_yahoo_historical(fh):
+    """
+    Parse the historical data in file handle fh from yahoo finance and return
+    results as a list of
+
+    d, open, close, high, low, volume
+    
+    where d is a floating poing representation of date, as returned by date2num
+
+    """
+    results = []
+
+
+
+    lines = fh.readlines()
+    for line in lines[1:]:
+
+        vals = line.split(',')
+        if len(vals)!=7: continue
+        datestr = vals[0]
+        dt = datetime.date(*time.strptime(datestr, '%d-%b-%y')[:3])
+        d = date2num(dt)
+        open, high, low, close =  [float(val) for val in vals[1:5]]
+        volume = int(vals[5])
+
+        results.append((d, open, close, high, low, volume))
+    results.reverse()
+    return results
+    
 def quotes_historical_yahoo(ticker, date1, date2):
 
     """
@@ -49,26 +79,12 @@ def quotes_historical_yahoo(ticker, date1, date2):
 
     ticker = ticker.upper()
 
-    results = []
-    try:
-        lines = urlopen(url).readlines()
+    try: ret = parse_yahoo_historical(urlopen(url))
     except IOError, exc:
         warnings.warn('urlopen() failure\n' + url + '\n' + exc.strerror[1])
         return None
-    for line in lines[1:]:
-
-        vals = line.split(',')
-        if len(vals)!=7: continue
-        datestr = vals[0]
-        dt = datetime.date(*time.strptime(datestr, '%d-%b-%y')[:3])
-        d = date2num(dt)
-        open, high, low, close =  [float(val) for val in vals[1:5]]
-        volume = int(vals[5])
-
-        results.append((d, open, close, high, low, volume))
-    results.reverse()
-    return results
 
+    return ret 
 
 
 def plot_day_summary(ax, quotes, ticksize=3,