ENH: Add propertry for setting Qt Standard Icons in designer

pydm/tests/widgets/test_pushbutton.py

@@ -102,6 +102,28 @@ def test_construct(qtbot, label, press_value, relative, init_channel, icon_font_
         button_icon_pixmap = pydm_pushbutton.icon().pixmap(size)
         assert icon_pixmap.toImage() == button_icon_pixmap.toImage()
 
+        # verify that qt standard icons can be set through our custom property
+        style = pydm_pushbutton.style()
+        test_icon = style.standardIcon(style.SP_DesktopIcon)
+        test_icon_image = test_icon.pixmap(size).toImage()
+
+        pydm_pushbutton.PyDMIcon = "SP_DesktopIcon"
+        push_btn_icon = pydm_pushbutton.icon()
+        push_btn_icon_image = push_btn_icon.pixmap(size).toImage()
+
+        assert test_icon_image == push_btn_icon_image
+
+        # verify that "Font Awesome" icons can be set through our custom property
+        icon_f = IconFont()
+        test_icon = icon_f.icon("eye-slash", color=None)
+        test_icon_image = test_icon.pixmap(size).toImage()
+
+        pydm_pushbutton.PyDMIcon = "eye-slash"
+        push_btn_icon = pydm_pushbutton.icon()
+        push_btn_icon_image = push_btn_icon.pixmap(size).toImage()
+
+        assert test_icon_image == push_btn_icon_image
+
     assert pydm_pushbutton.showConfirmDialog is False
     assert pydm_pushbutton.confirmMessage == PyDMPushButton.DEFAULT_CONFIRM_MESSAGE
     assert pydm_pushbutton.passwordProtected is False

pydm/tests/widgets/test_related_display_button.py

@@ -1,10 +1,11 @@
 import os
 import pytest
 import sys
-from qtpy.QtCore import Qt
+from qtpy.QtCore import Qt, QSize
 from qtpy.QtWidgets import QApplication
 from ...utilities.stylesheet import global_style
 from ...widgets.related_display_button import PyDMRelatedDisplayButton
+from ...utilities import IconFont
 
 test_ui_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), "../test_data", "test.ui")
 test_ui_path_with_stylesheet = os.path.join(
@@ -48,6 +49,40 @@ def test_press_with_filename(qtbot):
     button._rebuild_menu()
     qtbot.mouseRelease(button, Qt.LeftButton)
 
+    # verify default icon is set as expected
+    DEFAULT_ICON_NAME = "file"
+    DEFAULT_ICON_SIZE = QSize(16, 16)
+
+    default_icon = IconFont().icon(DEFAULT_ICON_NAME)
+
+    default_icon_pixmap = default_icon.pixmap(DEFAULT_ICON_SIZE)
+    related_display_button_icon_pixmap = button.icon().pixmap(DEFAULT_ICON_SIZE)
+
+    assert related_display_button_icon_pixmap.toImage() == default_icon_pixmap.toImage()
+    assert button.cursor().pixmap().toImage() == default_icon_pixmap.toImage()
+
+    # verify that qt standard icons can be set through our custom property
+    style = button.style()
+    test_icon = style.standardIcon(style.SP_DesktopIcon)
+    test_icon_image = test_icon.pixmap(DEFAULT_ICON_SIZE).toImage()
+
+    button.PyDMIcon = "SP_DesktopIcon"
+    shell_cmd_icon = button.icon()
+    shell_cmd_icon_image = shell_cmd_icon.pixmap(DEFAULT_ICON_SIZE).toImage()
+
+    assert test_icon_image == shell_cmd_icon_image
+
+    # verify that "Font Awesome" icons can be set through our custom property
+    icon_f = IconFont()
+    test_icon = icon_f.icon("eye-slash", color=None)
+    test_icon_image = test_icon.pixmap(DEFAULT_ICON_SIZE).toImage()
+
+    button.PyDMIcon = "eye-slash"
+    button_icon = button.icon()
+    push_btn_icon_image = button_icon.pixmap(DEFAULT_ICON_SIZE).toImage()
+
+    assert test_icon_image == push_btn_icon_image
+
     def check_title():
         assert "Form" in QApplication.instance().main_window.windowTitle()
 

pydm/tests/widgets/test_shell_command.py

@@ -73,6 +73,28 @@ def test_construct(qtbot, command, title):
     assert shell_cmd_icon_pixmap.toImage() == default_icon_pixmap.toImage()
     assert pydm_shell_command.cursor().pixmap().toImage() == default_icon_pixmap.toImage()
 
+    # verify that qt standard icons can be set through our custom property
+    style = pydm_shell_command.style()
+    test_icon = style.standardIcon(style.SP_DesktopIcon)
+    test_icon_image = test_icon.pixmap(DEFAULT_ICON_SIZE).toImage()
+
+    pydm_shell_command.PyDMIcon = "SP_DesktopIcon"
+    shell_cmd_icon = pydm_shell_command.icon()
+    shell_cmd_icon_image = shell_cmd_icon.pixmap(DEFAULT_ICON_SIZE).toImage()
+
+    assert test_icon_image == shell_cmd_icon_image
+
+    # verify that "Font Awesome" icons can be set through our custom property
+    icon_f = IconFont()
+    test_icon = icon_f.icon("eye-slash", color=None)
+    test_icon_image = test_icon.pixmap(DEFAULT_ICON_SIZE).toImage()
+
+    pydm_shell_command.PyDMIcon = "eye-slash"
+    shell_cmd_icon = pydm_shell_command.icon()
+    shell_cmd_icon_image = shell_cmd_icon.pixmap(DEFAULT_ICON_SIZE).toImage()
+
+    assert test_icon_image == shell_cmd_icon_image
+
 
 def test_deprecated_command_property_with_no_commands(qtbot):
     pydm_shell_command = PyDMShellCommand()

pydm/widgets/pushbutton.py

@@ -1,9 +1,10 @@
 import hashlib
 
-from qtpy.QtWidgets import QPushButton, QMessageBox, QInputDialog, QLineEdit
+from qtpy.QtGui import QColor
+from qtpy.QtWidgets import QPushButton, QMessageBox, QInputDialog, QLineEdit, QStyle
 from qtpy.QtCore import Slot, Property
 from .base import PyDMWritableWidget
-
+from ..utilities import IconFont
 import logging
 
 logger = logging.getLogger(__name__)
@@ -72,6 +73,83 @@ def __init__(
         self._released = False
         self.clicked.connect(self.sendValue)
 
+        # Standard icons (which come with the qt install, and work cross-platform),
+        # and icons from the "Font Awesome" icon set (https://fontawesome.com/)
+        # can not be set with a widget's "icon" property in designer, only in python.
+        # so we provide our own property to specify standard icons and set them with python in the prop's setter.
+        self._pydm_icon_name = ""
+        # The color of "Font Awesome" icons can be set,
+        # but standard icons are already colored and can not be set.
+        self._pydm_icon_color = QColor(90, 90, 90)
+
+    @Property(str)
+    def PyDMIcon(self) -> str:
+        """
+        Name of icon to be set from Qt provided standard icons or from the fontawesome icon-set.
+        See "enum QStyle::StandardPixmap" in Qt's QStyle documentation for full list of usable standard icons.
+        See https://fontawesome.com/icons?d=gallery for list of usable fontawesome icons.
+
+        Returns
+        -------
+        str
+        """
+        return self._pydm_icon_name
+
+    @PyDMIcon.setter
+    def PyDMIcon(self, value: str) -> None:
+        """
+        Name of icon to be set from Qt provided standard icons or from the "Font Awesome" icon-set.
+        See "enum QStyle::StandardPixmap" in Qt's QStyle documentation for full list of usable standard icons.
+        See https://fontawesome.com/icons?d=gallery for list of usable "Font Awesome" icons.
+
+        Parameters
+        ----------
+        value : str
+        """
+        if self._pydm_icon_name == value:
+            return
+
+        # We don't know if user is trying to use a standard icon or an icon from "Font Awesome",
+        # so 1st try to create a Font Awesome one, which hits exception if icon name is not valid.
+        try:
+            icon_f = IconFont()
+            i = icon_f.icon(value, color=self._pydm_icon_color)
+            self.setIcon(i)
+        except Exception:
+            icon = getattr(QStyle, value, None)
+            if icon:
+                self.setIcon(self.style().standardIcon(icon))
+
+        self._pydm_icon_name = value
+
+    @Property(QColor)
+    def PyDMIconColor(self) -> QColor:
+        """
+        The color of the icon (color is only applied if using icon from the "Font Awesome" set)
+        Returns
+        -------
+        QColor
+        """
+        return self._pydm_icon_color
+
+    @PyDMIconColor.setter
+    def PyDMIconColor(self, state_color: QColor) -> None:
+        """
+        The color of the icon (color is only applied if using icon from the "Font Awesome" set)
+        Parameters
+        ----------
+        new_color : QColor
+        """
+        if state_color != self._pydm_icon_color:
+            self._pydm_icon_color = state_color
+            # apply the new color
+            try:
+                icon_f = IconFont()
+                i = icon_f.icon(self._pydm_icon_name, color=self._pydm_icon_color)
+                self.setIcon(i)
+            except Exception:
+                return
+
     @Property(bool)
     def passwordProtected(self):
         """
@@ -146,7 +224,7 @@ def protectedPassword(self, value):
     @Property(bool)
     def showConfirmDialog(self):
         """
-        Wether or not to display a confirmation dialog.
+        Whether or not to display a confirmation dialog.
 
         Returns
         -------
@@ -157,7 +235,7 @@ def showConfirmDialog(self):
     @showConfirmDialog.setter
     def showConfirmDialog(self, value):
         """
-        Wether or not to display a confirmation dialog.
+        Whether or not to display a confirmation dialog.
 
         Parameters
         ----------
@@ -482,7 +560,7 @@ def updatePressValue(self, value):
     @Property(bool)
     def writeWhenRelease(self):
         """
-        Wether or not to write releaseValue on release
+        Whether or not to write releaseValue on release
 
         Returns
         -------
@@ -493,7 +571,7 @@ def writeWhenRelease(self):
     @writeWhenRelease.setter
     def writeWhenRelease(self, value):
         """
-        Wether or not to write releaseValue on release
+        Whether or not to write releaseValue on release
 
         Parameters
         ----------

pydm/widgets/related_display_button.py

@@ -4,8 +4,8 @@
 import warnings
 from functools import partial
 import hashlib
-from qtpy.QtWidgets import QPushButton, QMenu, QAction, QMessageBox, QInputDialog, QLineEdit, QWidget
-from qtpy.QtGui import QCursor, QIcon, QMouseEvent
+from qtpy.QtWidgets import QPushButton, QMenu, QAction, QMessageBox, QInputDialog, QLineEdit, QWidget, QStyle
+from qtpy.QtGui import QCursor, QIcon, QMouseEvent, QColor
 from qtpy.QtCore import Slot, Property, Qt, QSize, QPoint
 from .base import PyDMWidget, only_if_channel_set
 from ..utilities import IconFont, find_file, is_pydm_app
@@ -74,6 +74,15 @@ def __init__(
 
         self._follow_symlinks = False
 
+        # Standard icons (which come with the qt install, and work cross-platform),
+        # and icons from the "Font Awesome" icon set (https://fontawesome.com/)
+        # can not be set with a widget's "icon" property in designer, only in python.
+        # so we provide our own property to specify standard icons and set them with python in the prop's setter.
+        self._pydm_icon_name = ""
+        # The color of "Font Awesome" icons can be set,
+        # but standard icons are already colored and can not be set.
+        self._pydm_icon_color = QColor(90, 90, 90)
+
     @only_if_channel_set
     def check_enable_state(self) -> None:
         """
@@ -91,6 +100,74 @@ def check_enable_state(self) -> None:
 
         self.setToolTip(tooltip)
 
+    @Property(str)
+    def PyDMIcon(self) -> str:
+        """
+        Name of icon to be set from Qt provided standard icons or from the fontawesome icon-set.
+        See "enum QStyle::StandardPixmap" in Qt's QStyle documentation for full list of usable standard icons.
+        See https://fontawesome.com/icons?d=gallery for list of usable fontawesome icons.
+
+        Returns
+        -------
+        str
+        """
+        return self._pydm_icon_name
+
+    @PyDMIcon.setter
+    def PyDMIcon(self, value: str) -> None:
+        """
+        Name of icon to be set from Qt provided standard icons or from the "Font Awesome" icon-set.
+        See "enum QStyle::StandardPixmap" in Qt's QStyle documentation for full list of usable standard icons.
+        See https://fontawesome.com/icons?d=gallery for list of usable "Font Awesome" icons.
+
+        Parameters
+        ----------
+        value : str
+        """
+        if self._pydm_icon_name == value:
+            return
+
+        # We don't know if user is trying to use a standard icon or an icon from "Font Awesome",
+        # so 1st try to create a Font Awesome one, which hits exception if icon name is not valid.
+        try:
+            icon_f = IconFont()
+            i = icon_f.icon(value, color=self._pydm_icon_color)
+            self.setIcon(i)
+        except Exception:
+            icon = getattr(QStyle, value, None)
+            if icon:
+                self.setIcon(self.style().standardIcon(icon))
+
+        self._pydm_icon_name = value
+
+    @Property(QColor)
+    def PyDMIconColor(self) -> QColor:
+        """
+        The color of the icon (color is only applied if using icon from the "Font Awesome" set)
+        Returns
+        -------
+        QColor
+        """
+        return self._pydm_icon_color
+
+    @PyDMIconColor.setter
+    def PyDMIconColor(self, state_color: QColor) -> None:
+        """
+        The color of the icon (color is only applied if using icon from the "Font Awesome" set)
+        Parameters
+        ----------
+        new_color : QColor
+        """
+        if state_color != self._pydm_icon_color:
+            self._pydm_icon_color = state_color
+            # apply the new color
+            try:
+                icon_f = IconFont()
+                i = icon_f.icon(self._pydm_icon_name, color=self._pydm_icon_color)
+                self.setIcon(i)
+            except Exception:
+                return
+
     @Property("QStringList")
     def filenames(self) -> List[str]:
         return self._filenames