Printing support for main window spectrum Pt1

* Experimental printing support
* Added script to generate icon python resource

prasopes/__main__.py

@@ -7,9 +7,11 @@ from matplotlib.gridspec import GridSpec
 from PyQt5 import QtCore
 from PyQt5 import QtWidgets
 from PyQt5 import QtGui
+from PyQt5 import QtPrintSupport
 from rawprasslib import load_raw
 from rawprasslib import rawprasslib
 from prasopes.predictmz import predict as getmzpattern
+from io import BytesIO
 import prasopes.graphtools as gt
 import prasopes.filetools as ft
 import prasopes.zcetools as zce
@@ -57,6 +59,28 @@ def load_file(parent, chrom_plot, spc, d_set, ms_s, fn, chrom_s,
         update.signal.emit()
 
 
+def print_graph(mass_spec, chrom_spec, spect, fn):
+    printfig = Figure(figsize=(10, 4), dpi=300)
+    printplot = printfig.add_subplot(111)
+    if cf.settings().value("view/oddeven",type=bool):
+        print("TODO")
+    else:
+        gt.pop_plot(printplot, mass_spec)
+    printPreview = QtPrintSupport.QPrintPreviewDialog()
+    printer = printPreview.printer()
+    def ubercommand():
+        cache_file = BytesIO()
+        printfig.savefig(cache_file)
+        cache_file.seek(0)
+        image = QtGui.QImage.fromData(cache_file.read())
+        printer.setResolution(600)
+        painter = QtGui.QPainter(printPreview.printer())
+        painter.drawImage(QtCore.QPoint(0,0), image)
+        painter.end()
+    printPreview.paintRequested.connect(lambda: ubercommand())
+    printPreview.exec()
+
+
 def update_spectrum(condition, chromatogram, spect, ds,
                     ms, fn, chrom, config):
     if fn[0] is not None and condition:
@@ -170,6 +194,10 @@ def main():
     exportact.setShortcut(QtCore.Qt.CTRL + QtCore.Qt.Key_E)
     exportact.triggered.connect(lambda: ft.export_dial(
         ms, chrom, filename, main_window))
+    printact = QtWidgets.QAction(QtGui.QIcon.fromTheme(
+        "document-print"), "&Print", None)
+    printact.setShortcut(QtCore.Qt.CTRL + QtCore.Qt.Key_P)
+    printact.triggered.connect(lambda: print_graph(ms, chrom, spectrum, filename))
     settingsact = QtWidgets.QAction(QtGui.QIcon.fromTheme(
         "preferences-system"), "&Settings...", None)
     settingsact.triggered.connect(lambda: cf.dial(main_window))
@@ -227,6 +255,8 @@ def main():
     file_menu.addAction(openact)
     file_menu.addAction(exportact)
     file_menu.addSeparator()
+    file_menu.addAction(printact)
+    file_menu.addSeparator()
     file_menu.addAction(settingsact)
     file_menu.addSeparator()
     file_menu.addAction(quitact)

prasopes/gen_icons

+#!/bin/bash
+#Script for adding new icons
+#modify the tangoicons.qrc file first, then run this script
+#the script presumes that it is being run in the folder where it is located
+
+pyrcc5 tangoicons.qrc > tangoicons.py

prasopes/tangoicons.qrc

@@ -15,6 +15,9 @@
         <file alias="16x16/zoom-original.png">TangoMFK/16x16/zoom-original.png</file>
         <file alias="24x24/zoom-original.png">TangoMFK/24x24/zoom-original.png</file>
         <file alias="32x32/zoom-original.png">TangoMFK/32x32/zoom-original.png</file>
+        <file alias="16x16/document-open.png">TangoMFK/16x16/document-open.png</file>
+        <file alias="24x24/document-open.png">TangoMFK/24x24/document-open.png</file>
+        <file alias="32x32/document-open.png">TangoMFK/32x32/document-open.png</file>
         <file alias="index.theme">TangoMFK/index.theme</file>
     </qresource>
 </RCC>