Spectrum clipping now shows part of the path

prasopes/__main__.py

@@ -179,7 +179,7 @@ def key_pressed(event, chrom, spect, ds, ms_ds, fn, chrom_ds, config):
         update_spectrum(chrom, spect, ds, ms_ds, fn, chrom_ds, config)
     if event.key() == QtCore.Qt.Key_C:
         if event.modifiers().__int__() == QtCore.Qt.ControlModifier:
-            imgt.clip_spect_img(ms_ds, spect)
+            imgt.clip_spect_img(ms_ds, spect, fn)
         if event.modifiers().__int__() == QtCore.Qt.ControlModifier+\
                                           QtCore.Qt.ShiftModifier:
             dt.clip_spectstr(spect, chrom_ds, fn)

prasopes/imagetools.py

@@ -6,11 +6,12 @@ from PyQt5 import QtCore
 from PyQt5 import QtGui
 from PyQt5 import QtPrintSupport
 from PyQt5 import QtWidgets
+from pathlib import Path
 import prasopes.graphtools as gt
 import prasopes.config as cf
 
 
-def paint_image(mass_spec, spect, painttarget=None):
+def paint_image(mass_spec, spect, fn=None, painttarget=None):
     """generates QImage from mass spectrum"""
     if isinstance(painttarget, type(QtPrintSupport.QPrinter())):
         xinch, yinch, dpi, xtics = [cf.settings().value("print/{}".format(i),
@@ -33,6 +34,9 @@ def paint_image(mass_spec, spect, painttarget=None):
         [gt.pop_plot(*line, printplot, mass_spec, i)
                 for i,line in enumerate(data)]
     printplot.locator_params(nbins=xtics, axis='x')
+    if fn not in (None, [None]):
+        printplot.set_title(Path(*Path(fn[0]).resolve().parts[-2:]),
+                            loc="right")
     cache_file = BytesIO()
     paintfig.savefig(cache_file)
     cache_file.seek(0)
@@ -40,7 +44,7 @@ def paint_image(mass_spec, spect, painttarget=None):
     return image
 
 
-def clip_spect_img(mass_spec, spect):
-    image = paint_image(mass_spec, spect)
+def clip_spect_img(mass_spec, spect, fn):
+    image = paint_image(mass_spec, spect, fn=fn)
     QtWidgets.QApplication.clipboard().setImage(image)
     QtWidgets.QApplication.clipboard().setPixmap(QtGui.QPixmap.fromImage(image))