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SF.net SVN: matplotlib:[8523] trunk/matplotlib
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From: <md...@us...> - 2010-07-06 20:25:57
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Revision: 8523
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=8523&view=rev
Author: mdboom
Date: 2010-07-06 20:25:51 +0000 (Tue, 06 Jul 2010)
Log Message:
-----------
Support optional JPEG and TIFF saving if PIL is installed.
Modified Paths:
--------------
trunk/matplotlib/FILETYPES
trunk/matplotlib/lib/matplotlib/backend_bases.py
trunk/matplotlib/lib/matplotlib/backends/backend_agg.py
Modified: trunk/matplotlib/FILETYPES
===================================================================
--- trunk/matplotlib/FILETYPES 2010-07-06 15:49:23 UTC (rev 8522)
+++ trunk/matplotlib/FILETYPES 2010-07-06 20:25:51 UTC (rev 8523)
@@ -5,30 +5,33 @@
Each cell specifies the backend that actually handles the file format.
A cell with a '+' in it denotes the rasterizer and the file writing
-infrastructure as separate pieces.
+infrastructure as separate pieces.
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
| |bmp |emf |eps |jpeg |pcx |pdf |png |ps |raw |svg |svgz |tiff |xpm |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
-|Agg | |emf |ps | | |pdf |agg * |ps |agg |svg |svg | | |
+|Agg | |emf |ps |agg + | |pdf |agg * |ps |agg |svg |svg |agg +| |
+| | | | |pil | | | | | | | |pil | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
|Cairo | |emf |ps | | |cairo |cairo |cairo|agg |cairo|cairo| | |
|[1] | | |[2] | | | |* | | | | | | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
-|CocoaAgg| |emf |ps | | |pdf |agg * |ps |agg |svg |svg | | |
+|CocoaAgg| |emf |ps |agg + | |pdf |agg * |ps |agg |svg |svg |agg +| |
+| | | | |pil | | | | | | | |pil | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
|Emf | |emf *| | | | | | | | | | | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
-|FltkAgg | |emf |ps | | |pdf |agg * |ps |agg |svg |svg | | |
+|FltkAgg | |emf |ps |agg + | |pdf |agg * |ps |agg |svg |svg |agg +| |
+| | | | |pil | | | | | | | |pil | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
|Gd | | | | | | |gd * | | | | | | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
-|Gtk | |emf |ps |gdk + | |pdf |gdk + |ps |agg |svg |svg | | |
-|(gdk) | | | |pixbuf | | |pixbuf| | | | | | |
+|Gtk | |emf |ps |gdk + | |pdf |gdk + |ps |agg |svg |svg |agg +| |
+|(gdk) | | | |pixbuf | | |pixbuf| | | | |pil | |
| | | | | | | |* | | | | | | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
-|GtkAgg | |emf |ps |agg + | |pdf |agg + |ps |agg |svg |svg | | |
-| | | | |pixbuf | | |pixbuf| | | | | | |
+|GtkAgg | |emf |ps |agg + | |pdf |agg + |ps |agg |svg |svg |agg +| |
+| | | | |pixbuf | | |pixbuf| | | | |pil | |
| | | | | | | |* | | | | | | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
|GtkCairo| |emf |ps |cairo +| |cairo |cairo |cairo|agg |cairo|cairo| | |
@@ -41,18 +44,22 @@
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
|Ps | | |ps | | | | |ps * | | | | | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
-|QtAgg | |emf |ps | | |pdf |agg * |ps |agg |svg |svg | | |
+|QtAgg | |emf |ps |agg + | |pdf |agg * |ps |agg |svg |svg |agg +| |
+| | | | |pil | | | | | | | |pil | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
-|Qt4Agg | |emf |ps | | |pdf |agg * |ps |agg |svg |svg | | |
+|Qt4Agg | |emf |ps |agg + | |pdf |agg * |ps |agg |svg |svg |agg +| |
+| | | | |pil | | | | | | | |pil | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
|Svg | | | | | | | | | |svg *|svg | | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
-|TkAgg | |emf |ps | | |pdf |agg * |ps |agg |svg |svg | | |
+|TkAgg | |emf |ps |agg + | |pdf |agg * |ps |agg |svg |svg |agg +| |
+| | | | |pil | | | | | | | |pil | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
|Wx |wx + |emf |ps |wx + wx|wx + |pdf |wx + |ps |agg |svg |svg |wx + |wx + |
| |wx | | | |wx | |wx * | | | | |wx |wx |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
-|WxAgg | |emf |ps | | |pdf |agg * |ps |agg |svg |svg | | |
+|WxAgg | |emf |ps |agg + | |pdf |agg * |ps |agg |svg |svg |agg +| |
+| | | | |pil | | | | | | | |pil | |
+--------+-----+-----+-----+-------+-----+------+------+-----+-----+-----+-----+-----+-----+
* Default filetype for the backend
Modified: trunk/matplotlib/lib/matplotlib/backend_bases.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backend_bases.py 2010-07-06 15:49:23 UTC (rev 8522)
+++ trunk/matplotlib/lib/matplotlib/backend_bases.py 2010-07-06 20:25:51 UTC (rev 8523)
@@ -41,8 +41,12 @@
import matplotlib.textpath as textpath
from matplotlib.path import Path
+try:
+ import Image
+ _has_pil = True
+except ImportError:
+ _has_pil = False
-
_backend_d = {}
def register_backend(format, backend_class):
@@ -1721,6 +1725,40 @@
svg = self.switch_backends(FigureCanvasSVG)
return svg.print_svgz(*args, **kwargs)
+ if _has_pil:
+ filetypes['jpg'] = filetypes['jpeg'] = 'Joint Photographic Experts Group'
+ def print_jpg(self, filename_or_obj, *args, **kwargs):
+ """
+ Supported kwargs:
+
+ *quality*: The image quality, on a scale from 1 (worst) to
+ 95 (best). The default is 75. Values above 95 should
+ be avoided; 100 completely disables the JPEG
+ quantization stage.
+
+ *optimize*: If present, indicates that the encoder should
+ make an extra pass over the image in order to select
+ optimal encoder settings.
+
+ *progressive*: If present, indicates that this image
+ should be stored as a progressive JPEG file.
+ """
+ from backends.backend_agg import FigureCanvasAgg # lazy import
+ agg = self.switch_backends(FigureCanvasAgg)
+ buf, size = agg.print_to_buffer()
+ image = Image.frombuffer('RGBA', size, buf, 'raw', 'RGBA', 0, 1)
+ return image.save(filename_or_obj, **kwargs)
+ print_jpeg = print_jpg
+
+ filetypes['tif'] = filetypes['tiff'] = 'Tagged Image File Format'
+ def print_tif(self, filename_or_obj, *args, **kwargs):
+ from backends.backend_agg import FigureCanvasAgg # lazy import
+ agg = self.switch_backends(FigureCanvasAgg)
+ buf, size = agg.print_to_buffer()
+ image = Image.frombuffer('RGBA', size, buf, 'raw', 'RGBA', 0, 1)
+ return image.save(filename_or_obj)
+ print_tiff = print_tif
+
def get_supported_filetypes(self):
return self.filetypes
Modified: trunk/matplotlib/lib/matplotlib/backends/backend_agg.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_agg.py 2010-07-06 15:49:23 UTC (rev 8522)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_agg.py 2010-07-06 20:25:51 UTC (rev 8523)
@@ -445,3 +445,13 @@
renderer.width, renderer.height,
filename_or_obj, self.figure.dpi)
renderer.dpi = original_dpi
+
+ def print_to_buffer(self):
+ FigureCanvasAgg.draw(self)
+ renderer = self.get_renderer()
+ original_dpi = renderer.dpi
+ renderer.dpi = self.figure.dpi
+ result = (renderer._renderer.buffer_rgba(0, 0),
+ (int(renderer.width), int(renderer.height)))
+ renderer.dpi = original_dpi
+ return result
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