Add simple Image Adjust tool (using Pillow Enhance)

pathomx/plugins/import_image/import_image.md

@@ -1,10 +1,12 @@
 Image
 =====
 Import image from file. By [Martin A. Fitzpatrick][]
+
 Introduction
 ------------
 This plugin supports loading images from a number of standard file types. Loading is performed
 by the PILlow Python library.
+
 File Formats
 ------------
 The supported file formats are as follows:

pathomx/plugins/pillow/.pathomx-plugin

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+[Core]
+Name = Pillow (PIL fork)
+Module = loader
+
+[Documentation]
+Author = Martin Fitzpatrick
+Version = 1.0
+Website = http://martinfitzpatrick.name/
+Description = Python Imaging Library image processing tools

pathomx/plugins/pillow/adjust.md

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+Adjust Image
+=================
+Peform basic image adjustments (brightness, contrast, color and sharpness) using the [Pillow][] image
+library. [Pillow][] is the ‘friendly’ [PIL][] fork by Alex Clark and Contributors. [PIL][] is the Python Imaging Library by Fredrik Lundh and Contributors.
+Pathomx tool implementations by [Martin A. Fitzpatrick][]
+
+
+Introduction
+------------
+This tool performs basic image adjustments including brightness, contrast, color and sharpness. Add image data to 
+the *input_image* input (e.g. via the Image import tool) then adjust the sliders to modify the image output. All
+adjustments can be performed simultaneously. 
+
+The adjusted image is available via the *output_image* output.
+
+
+  [Martin A. Fitzpatrick]: http://martinfitzpatrick.name/
+  [Pillow]: https://pillow.readthedocs.org/
+  [PIL]: http://www.pythonware.com/products/pil/

pathomx/plugins/pillow/adjust.py

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+from PIL import ImageEnhance
+
+
+output_image = input_image
+
+if config.get('brightness') != 100:
+    adjuster = ImageEnhance.Brightness(output_image)
+    output_image = adjuster.enhance( float(config.get('brightness')) / 100 )
+
+if config.get('contrast') != 100:
+    adjuster = ImageEnhance.Contrast(output_image)
+    output_image = adjuster.enhance( float(config.get('contrast')) / 100 )
+
+if config.get('color') != 100:
+    adjuster = ImageEnhance.Color(output_image)
+    output_image = adjuster.enhance( float(config.get('color')) / 100 )
+
+if config.get('sharpness') != 100:
+    adjuster = ImageEnhance.Sharpness(output_image)
+    output_image = adjuster.enhance( float(config.get('sharpness')) / 100 )

pathomx/plugins/pillow/loader.py

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+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+import os
+
+from pathomx.plugins import ProcessingPlugin
+
+from PIL import Image
+
+from pathomx.qt import *
+
+import pathomx.ui as ui
+import pathomx.utils as utils
+
+
+# Dialog box for Metabohunter search options
+class EnhanceConfigPanel(ui.ConfigPanel):
+
+    def __init__(self, parent, filename=None, *args, **kwargs):
+        super(EnhanceConfigPanel, self).__init__(parent, *args, **kwargs)
+
+        self.v = parent
+        self.config = parent.config
+        gb = QGroupBox('Enhance')
+        grid = QGridLayout()
+
+        self.bright = QSlider(Qt.Horizontal)
+        self.bright.setRange(0, 200)
+        self.bright.setSingleStep(10)
+        self.bright.setPageStep(50)
+        grid.addWidget(QLabel('Brightness'), 0, 0)
+        grid.addWidget(self.bright, 0, 1)
+        self.config.add_handler('brightness', self.bright)
+
+        self.contrast = QSlider(Qt.Horizontal)
+        self.contrast.setRange(0, 200)
+        self.contrast.setSingleStep(10)
+        self.contrast.setPageStep(50)
+        grid.addWidget(QLabel('Contrast'), 1, 0)
+        grid.addWidget(self.contrast, 1, 1)
+        self.config.add_handler('contrast', self.contrast)
+
+        self.color = QSlider(Qt.Horizontal)
+        self.color.setRange(0, 200)
+        self.color.setSingleStep(10)
+        self.color.setPageStep(50)
+        grid.addWidget(QLabel('Color'), 2, 0)
+        grid.addWidget(self.color, 2, 1)
+        self.config.add_handler('color', self.color)
+
+        self.sharp = QSlider(Qt.Horizontal)
+        self.sharp.setRange(0, 200)
+        self.sharp.setSingleStep(10)
+        self.sharp.setPageStep(50)
+        grid.addWidget(QLabel('Sharp'), 3, 0)
+        grid.addWidget(self.sharp, 3, 1)
+        self.config.add_handler('sharpness', self.sharp)
+
+        gb.setLayout(grid)
+
+        self.layout.addWidget(gb)
+
+        self.finalise()
+
+
+class AdjustApp(ui.GenericTool):
+
+    name = "Adjust Image"
+    shortname = 'adjust'
+
+    def __init__(self, *args, **kwargs):
+        super(AdjustApp, self).__init__(*args, **kwargs)
+
+        self.config.set_defaults({
+            'brightness': 100,
+            'contrast': 100,
+            'color': 100,
+            'sharpness': 100,
+        })
+
+        self.addConfigPanel(EnhanceConfigPanel, 'Settings')
+
+        self.data.add_input('input_image')  # Add output slot
+        self.data.add_output('output_image')  # Add output slot
+
+
+class Pillow(ProcessingPlugin):
+
+    def __init__(self, *args, **kwargs):
+        super(Pillow, self).__init__(*args, **kwargs)
+        self.register_app_launcher(AdjustApp)
+