TreeViewFunctions, two LV_USER fields

pim

I want a treeview (more a treeList) with two LV_USER fields and no LV_TREE field.
I started with the given example and I succeed, but the text colors are incorrect.
Initially all white, but after a click all black.
How can I set the text foreground and background color?
The background color is actually defined by the usergui.
customgui.SetBool(c4d.TREEVIEW_ALTERNATE_BG, True) # Alternate background per line.

I tried setting the text color using GeUserArea.DrawSetTextCol(c4d.Vector(0,0,0), c4d.Vector(128,128,128)) and GeUserArea.DrawSetPen(c4d.Vector(255,255,255)) but no success.

Here some code.

    def CreateLayout(self):
        # Create the TreeView GUI.
        customgui = c4d.BaseContainer()
        customgui.SetBool(c4d.TREEVIEW_BORDER, c4d.BORDER_THIN_IN)
        customgui.SetBool(c4d.TREEVIEW_HAS_HEADER, True) # True if the tree view may have a header line.
        customgui.SetBool(c4d.TREEVIEW_HIDE_LINES, False) # True if no lines should be drawn.
        customgui.SetBool(c4d.TREEVIEW_MOVE_COLUMN, True) # True if the user can move the columns.
        customgui.SetBool(c4d.TREEVIEW_RESIZE_HEADER, True) # True if the column width can be changed by the user.
        customgui.SetBool(c4d.TREEVIEW_FIXED_LAYOUT, True) # True if all lines have the same height.
        customgui.SetBool(c4d.TREEVIEW_ALTERNATE_BG, True) # Alternate background per line.
        customgui.SetBool(c4d.TREEVIEW_CURSORKEYS, True) # True if cursor keys should be processed.
        customgui.SetBool(c4d.TREEVIEW_NOENTERRENAME, False) # Suppresses the rename popup when the user presses enter.

        customgui.SetBool(c4d.TREEVIEW_OUTSIDE_DROP, True) # True if an object may be dropped under all the objects in the tree view.
        
        self._treegui = self.AddCustomGui( 1000, c4d.CUSTOMGUI_TREEVIEW, "", c4d.BFH_SCALEFIT | c4d.BFV_SCALEFIT, 300, 300, customgui)
        if not self._treegui:
            print "[ERROR]: Could not create TreeView"
            return False

        self.AddButton(1001, c4d.BFH_CENTER, name="Add")
        self.AddButton(1002, c4d.BFH_CENTER, name="Insert Under")
        return True

    def InitValues(self):
        # Initialize the column layout for the TreeView.
        layout = c4d.BaseContainer()
        layout.SetLong(ID_CHECKBOX, c4d.LV_CHECKBOX)
        #layout.SetLong(ID_NAME, c4d.LV_TREE)
        layout.SetLong(ID_NAME, c4d.LV_USER)
        layout.SetLong(ID_OTHER, c4d.LV_USER)
        self._treegui.SetLayout(3, layout)

        # Set the header titles.
        self._treegui.SetHeaderText(ID_CHECKBOX, "Check")
        self._treegui.SetHeaderText(ID_NAME, "Name")
        self._treegui.SetHeaderText(ID_OTHER, "Other")
        self._treegui.Refresh()

        # Set TreeViewFunctions instance used by our CUSTOMGUI_TREEVIEW
        self._treegui.SetRoot(self._treegui, self._listView, None)
        return True

In ListView()
    def DrawCell(self, root, userdata, obj, col, drawinfo, bgColor):
        """
        Draw into a Cell, only called for column of type LV_USER
        """

        if col == ID_NAME:
            name = "Jan "
            geUserArea = drawinfo["frame"]
            #geUserArea.DrawSetTextCol(c4d.Vector(0,0,0), c4d.Vector(128,128,128))
            #geUserArea.DrawSetPen(c4d.Vector(255,255,255))
            w = geUserArea.DrawGetTextWidth(name)
            h = geUserArea.DrawGetFontHeight()
            xpos = drawinfo["xpos"]
            ypos = drawinfo["ypos"] + drawinfo["height"]
            drawinfo["frame"].DrawText(name, xpos, ypos - h * 1.1)   
            
        if col == ID_OTHER:
            name = "Pim " + obj.otherData
            geUserArea = drawinfo["frame"]
            #geUserArea.DrawSetTextCol(c4d.Vector(255,255,255), c4d.Vector(0,0,0))
            #geUserArea.DrawSetPen(c4d.Vector(0,0,0))
            w = geUserArea.DrawGetTextWidth(name)
            h = geUserArea.DrawGetFontHeight()
            xpos = drawinfo["xpos"]
            ypos = drawinfo["ypos"] + drawinfo["height"]
            drawinfo["frame"].DrawText(name, xpos, ypos - h * 1.1)

        return

m_adam

Hi @pim can you share the whole code, here in R20.059 or either in S22 with this example C4D TreeView Example I can't reproduce your issue.

Cheers,
Maxime.

pim

I changed following line. LV_TREE to LV_USER

        #layout.SetLong(ID_NAME, c4d.LV_TREE)
        layout.SetLong(ID_NAME, c4d.LV_USER)

And in DrawCell() I added the handling of ID_NAME

    def DrawCell(self, root, userdata, obj, col, drawinfo, bgColor):
        """
        Draw into a Cell, only called for column of type LV_USER
        """
        
        if col == ID_NAME:
            name = "Pim: " + obj.otherData
            geUserArea = drawinfo["frame"]
            w = geUserArea.DrawGetTextWidth(name)
            h = geUserArea.DrawGetFontHeight()
            xpos = drawinfo["xpos"]
            ypos = drawinfo["ypos"] + drawinfo["height"]
            drawinfo["frame"].DrawText(name, xpos, ypos - h * 1.1)
            
        if col == ID_OTHER:
            name = obj.otherData
            geUserArea = drawinfo["frame"]
            w = geUserArea.DrawGetTextWidth(name)
            h = geUserArea.DrawGetFontHeight()
            xpos = drawinfo["xpos"]
            ypos = drawinfo["ypos"] + drawinfo["height"]
            drawinfo["frame"].DrawText(name, xpos, ypos - h * 1.1)

This is the result:
Initially all white:

After adding all black:

So, how can I set the text color?

ferdinand

Hi,

you need to set fore- and background colour before text drawing operations with GeUserArea.DrawSetTextCol. There is probably something else drawing in that user area and changing these values. And when your method is being called, it then uses these changed fore- and background colours.

Cheers,
zipit

pim

I tried that, but it did not work correctly. It did not give the wanted result.

#geUserArea.DrawSetTextCol(c4d.Vector(255,255,255), c4d.Vector(128,128,128))
#geUserArea.DrawSetPen(c4d.Vector(255,255,255))

Background should alternate and the foreground should be white.
I tried a lot of color, but could not get the correct combination.

ferdinand

Hi,

you have the background color of the current row in the drawinfo dictionary which is being passed to the method.

Cheers,
zipit

m_adam

Hi @pim so far I can't replicate it,
here the full code, if you still have issue please share your entire code, without that we can't help more.

#More information https://developers.maxon.net/forum/topic/10654#56287
import c4d

# Be sure to use a unique ID obtained from [URL-REMOVED]
PLUGIN_ID = 1000010 # TEST ID ONLY

# TreeView Column IDs.
ID_CHECKBOX = 1
ID_NAME = 2
ID_OTHER = 3

class TextureObject(object):
    """
    Class which represent a texture, aka an Item in our list
    """
    texturePath = "TexPath"
    otherData = "OtherData"
    _selected = False

    def __init__(self, texturePath):
        self.texturePath = texturePath
        self.otherData += texturePath

    @property
    def IsSelected(self):
        return self._selected

    def Select(self):
        self._selected = True

    def Deselect(self):
        self._selected = False

    def __repr__(self):
        return str(self)

    def __str__(self):
        return self.texturePath


class ListView(c4d.gui.TreeViewFunctions):

    def __init__(self):
        self.listOfTexture = list() # Store all objects we need to display in this list

        # Add some defaults values 
        t1 = TextureObject("T1")
        t2 = TextureObject("T2")
        t3 = TextureObject("T3")
        t4 = TextureObject("T4")

        self.listOfTexture.extend([t1, t2, t3, t4])


    def IsResizeColAllowed(self, root, userdata, lColID):
        return True

    def IsTristate(self, root, userdata):
        return False

    def GetColumnWidth(self, root, userdata, obj, col, area):
        return 80  # All have the same initial width

    def IsMoveColAllowed(self, root, userdata, lColID):
        # The user is allowed to move all columns.
        # TREEVIEW_MOVE_COLUMN must be set in the container of AddCustomGui.
        return True

    def GetFirst(self, root, userdata):
        """
        Return the first element in the hierarchy, or None if there is no element.
        """
        rValue = None if not self.listOfTexture else self.listOfTexture[0]
        return rValue

    def GetDown(self, root, userdata, obj):
        """
        Return a child of a node, since we only want a list, we return None everytime
        """
        return None

    def GetNext(self, root, userdata, obj):
        """
        Returns the next Object to display after arg:'obj'
        """
        rValue = None
        currentObjIndex = self.listOfTexture.index(obj)
        nextIndex = currentObjIndex + 1
        if nextIndex < len(self.listOfTexture):
            rValue = self.listOfTexture[nextIndex]

        return rValue

    def GetPred(self, root, userdata, obj):
        """
        Returns the previous Object to display before arg:'obj'
        """
        rValue = None
        currentObjIndex = self.listOfTexture.index(obj)
        predIndex = currentObjIndex - 1
        if 0 <= predIndex < len(self.listOfTexture):
            rValue = self.listOfTexture[predIndex]

        return rValue

    def GetId(self, root, userdata, obj):
        """
        Return a unique ID for the element in the TreeView.
        """
        return hash(obj)

    def Select(self, root, userdata, obj, mode):
        """
        Called when the user selects an element.
        """
        if mode == c4d.SELECTION_NEW:
            for tex in self.listOfTexture:
                tex.Deselect()
            obj.Select()
        elif mode == c4d.SELECTION_ADD:
            obj.Select()
        elif mode == c4d.SELECTION_SUB:
            obj.Deselect()

    def IsSelected(self, root, userdata, obj):
        """
        Returns: True if *obj* is selected, False if not.
        """
        return obj.IsSelected

    def SetCheck(self, root, userdata, obj, column, checked, msg):
        """
        Called when the user clicks on a checkbox for an object in a
        `c4d.LV_CHECKBOX` column.
        """
        if checked:
            obj.Select()
        else:
            obj.Deselect()

    def IsChecked(self, root, userdata, obj, column):
        """
        Returns: (int): Status of the checkbox in the specified *column* for *obj*.
        """
        if obj.IsSelected:
            return c4d.LV_CHECKBOX_CHECKED | c4d.LV_CHECKBOX_ENABLED
        else:
            return c4d.LV_CHECKBOX_ENABLED

    def GetName(self, root, userdata, obj):
        """
        Returns the name to display for arg:'obj', only called for column of type LV_TREE
        """
        return str(obj) # Or obj.texturePath

    def DrawCell(self, root, userdata, obj, col, drawinfo, bgColor):
        """
        Draw into a Cell, only called for column of type LV_USER
        """
        rgbSelectedColor = c4d.gui.GeUserArea().GetColorRGB(c4d.COLOR_TEXT_SELECTED)
        selectedColor = c4d.Vector(rgbSelectedColor["r"], rgbSelectedColor["g"], rgbSelectedColor["b"]) / 255.0
        txtColor = selectedColor if obj.IsSelected else c4d.Vector(0.2, 0.4, 0.8)
        drawinfo["frame"].DrawSetTextCol(txtColor, drawinfo["bgCol"])

        if col == ID_NAME:
            name = str(obj)
            geUserArea = drawinfo["frame"]
            w = geUserArea.DrawGetTextWidth(name)
            h = geUserArea.DrawGetFontHeight()
            xpos = drawinfo["xpos"]
            ypos = drawinfo["ypos"] + drawinfo["height"]
            drawinfo["frame"].DrawText(name, xpos, ypos - h * 1.1)
            xpos = drawinfo["xpos"]
            ypos = drawinfo["ypos"] + drawinfo["height"]

        if col == ID_OTHER:
            name = obj.otherData
            geUserArea = drawinfo["frame"]
            w = geUserArea.DrawGetTextWidth(name)
            h = geUserArea.DrawGetFontHeight()
            xpos = drawinfo["xpos"]
            ypos = drawinfo["ypos"] + drawinfo["height"]
            drawinfo["frame"].DrawText(name, xpos, ypos - h * 1.1)

    def DoubleClick(self, root, userdata, obj, col, mouseinfo):
        """
        Called when the user double-clicks on an entry in the TreeView.

        Returns:
          (bool): True if the double-click was handled, False if the
            default action should kick in. The default action will invoke
            the rename procedure for the object, causing `SetName()` to be
            called.
        """
        c4d.gui.MessageDialog("You clicked on " + str(obj))
        return True

    def DeletePressed(self, root, userdata):
        "Called when a delete event is received."
        for tex in reversed(self.listOfTexture):
            if tex.IsSelected:
                self.listOfTexture.remove(tex)

class TestDialog(c4d.gui.GeDialog):
    _treegui = None # Our CustomGui TreeView
    _listView = ListView() # Our Instance of c4d.gui.TreeViewFunctions

    def CreateLayout(self):
        # Create the TreeView GUI.
        customgui = c4d.BaseContainer()
        customgui.SetBool(c4d.TREEVIEW_BORDER, c4d.BORDER_THIN_IN)
        customgui.SetBool(c4d.TREEVIEW_HAS_HEADER, True) # True if the tree view may have a header line.
        customgui.SetBool(c4d.TREEVIEW_HIDE_LINES, False) # True if no lines should be drawn.
        customgui.SetBool(c4d.TREEVIEW_MOVE_COLUMN, True) # True if the user can move the columns.
        customgui.SetBool(c4d.TREEVIEW_RESIZE_HEADER, True) # True if the column width can be changed by the user.
        customgui.SetBool(c4d.TREEVIEW_FIXED_LAYOUT, True) # True if all lines have the same height.
        customgui.SetBool(c4d.TREEVIEW_ALTERNATE_BG, True) # Alternate background per line.
        customgui.SetBool(c4d.TREEVIEW_CURSORKEYS, True) # True if cursor keys should be processed.
        customgui.SetBool(c4d.TREEVIEW_NOENTERRENAME, False) # Suppresses the rename popup when the user presses enter.

        self._treegui = self.AddCustomGui( 1000, c4d.CUSTOMGUI_TREEVIEW, "", c4d.BFH_SCALEFIT | c4d.BFV_SCALEFIT, 300, 300, customgui)
        if not self._treegui:
            print "[ERROR]: Could not create TreeView"
            return False

        self.AddButton(1001, c4d.BFH_CENTER, name="Add")
        return True

    def InitValues(self):
        # Initialize the column layout for the TreeView.
        layout = c4d.BaseContainer()
        layout.SetLong(ID_CHECKBOX, c4d.LV_CHECKBOX)
        layout.SetLong(ID_NAME, c4d.LV_USER)
        layout.SetLong(ID_OTHER, c4d.LV_USER)
        self._treegui.SetLayout(3, layout)

        # Set the header titles.
        self._treegui.SetHeaderText(ID_CHECKBOX, "Check")
        self._treegui.SetHeaderText(ID_NAME, "Name")
        self._treegui.SetHeaderText(ID_OTHER, "Other")
        self._treegui.Refresh()

        # Set TreeViewFunctions instance used by our CUSTOMGUI_TREEVIEW
        self._treegui.SetRoot(self._treegui, self._listView, None)
        return True

    def Command(self, id, msg):
        # Click on button
        if id == 1001:
            # Add data to our DataStructure (ListView)
            newID = len(self._listView.listOfTexture) + 1 
            tex = TextureObject("T{}".format(newID))
            self._listView.listOfTexture.append(tex)

            # Refresh the TreeView
            self._treegui.Refresh()

        return True


def main():
    global dlg
    dlg = TestDialog()
    dlg.Open(c4d.DLG_TYPE_ASYNC, PLUGIN_ID, defaulth=600, defaultw=600)

if __name__ == "__main__":
    main()

Cheers,
Maxime.

[URL-REMOVED] @maxon: This section contained a non-resolving link which has been removed.

pim

Thanks, it is working.