# --------------------------------------------------------------------------- #
# FOLDPANELBAR wxPython IMPLEMENTATION
# Ported From Jorgen Bodde & Julian Smart (Extended Demo) C++ Code By:
#
# Andrea Gavana, @ 23 Mar 2005
# Latest Revision: 14 Nov 2010, 12.00 GMT
#
#
# TODO List
#
# All The C++ TODOs Are Still Alive. I Am Not Able to Read Jorges's Mind
# So I Don't Really Know What Will Be The New Features/Additions He Will
# Make On His Code. At The Moment They Are:
#
# 1. OnPaint Function In CaptionBar Class:
# TODO: Maybe First A Memory Dc Should Draw All, And Then Paint It On The
# Caption. This Way A Flickering Arrow During Resize Is Not Visible.
#
# 2. OnChar Function In CaptionBar Class:
# TODO: This Is Easy To Do But I Don't Have Any Useful Idea On Which Kind
# Of Features To Add. Does Anyone Have An Intelligent Idea?
#
# 3. AddFoldPanelWindow Function In FoldPanelBar Class:
# TODO: Take Old And New Heights, And If Difference, Reposition All The
# Lower Panels. This Is Because The User Can Add New wxWindow Controls
# Somewhere In Between When Other Panels Are Already Present.
# Don't Know What It Means. Probably Is My Poor English...
#
# 4. OnSizePanel Function In FoldPanelBar Class:
# TODO: A Smart Way To Check Wether The Old - New Width Of The
# Panel Changed, If So No Need To Resize The Fold Panel Items
#
#
# DONE List:
#
# 1. Implemented Styles Like FPB_SINGLE_FOLD and FPB_EXCLUSIVE_FOLD
# Thanks To E. A. Tacao For His Nice Suggestions.
#
# 2. Added Some Maquillage To FoldPanelBar: When The Mouse Enters The Icon
# Region, It Is Changed To wx.CURSOR_HAND.
#
#
# For The Original TODO List From Jorgen, Please Refer To:
# http://www.solidsteel.nl/jorg/components/foldpanel/wxFoldPanelBar.php#todo_list
#
#
#
# For All Kind Of Problems, Requests Of Enhancements And Bug Reports, Please
# Write To Me At:
#
# andrea.gavana@gmail.com
# gavana@kpo.kz
#
# Or, Obviously, To The wxPython Mailing List!!!
#
#
# End Of Comments
# --------------------------------------------------------------------------- #
"""
FoldPanelBar is a control that contains multiple panels, which can be expanded
or collapsed.
Description
===========
The FoldPanelBar is a control that contains multiple panels (of type
`FoldPanelItem`) that can be expanded or collapsed. The captionbar of
the FoldPanelBar can be customized by setting it to a horizontal gradient
style, vertical gradient style, a single colour, a rectangle or filled
rectangle. The FoldPanel items can be collapsed in place or to the
bottom of the control. `wx.Window` derived controls can be added
dynamically, and separated by separator lines.
How does it work
----------------
The internals of the FoldPanelBar is a list of FoldPanelItem objects. Through
the reference of FoldPanel these panels can be controlled by adding new controls
to a FoldPanel or adding new FoldPanels to the FoldPanelBar.
The CaptionBar fires events to the parent (container of all panel items) when a
sub-panel needs resizing (either folding or expanding). The fold or expand process
is simply a resize of the panel so it looks like all controls on it are gone. All
controls are still child of the FoldPanel they are located on. If they don't
handle the event (and they won't) then the owner of the FoldPanelBar gets the
events.
This is what you need to handle the controls. There isn't much to it just
a lot of calculations to see what panel belongs where. There are no sizers
involved in the panels, everything is purely x-y positioning.
What can it do and what not?
----------------------------
a) What it can do:
* Run-time addition of panels (no deletion just yet);
* Run time addition of controls to the panel (it will be resized accordingly);
* Creating panels in collapsed mode or expanded mode;
* Various modes of caption behaviour and filling to make it more appealing;
* Panels can be folded and collapsed (or all of them) to allow more space.
b) What it cannot do:
* Selection of a panel like in a listctrl;
* Dragging and dropping the panels;
* Re-ordering the panels (not yet).
Supported Platforms
===================
FoldPanelBar is supported on the following platforms:
* Windows (Verified on Windows XP, 2000)
* Linux/Unix (GTK2) (Thanks to Toni Brkic and Robin Dunn)
* Mac OSX (Thanks to Robin Dunn for the CaptionBar size patch)
Window Styles
=============
This class supports the following window styles:
========================== =========== ==================================================
Window Styles Hex Value Description
========================== =========== ==================================================
``FPB_SINGLE_FOLD`` 0x1 Single fold forces other panels to close when they are open, and only opens the current panel. This will allow the open panel to gain the full size left in the client area. This is an extra style.
``FPB_COLLAPSE_TO_BOTTOM`` 0x2 All panels are stacked to the bottom. When they are expanded again they show up at the top. This is an extra style.
``FPB_EXCLUSIVE_FOLD`` 0x4 ``FPB_SINGLE_FOLD`` style plus the panels will be stacked at the bottom. This is an extra style.
``FPB_HORIZONTAL`` 0x8 `FoldPanelBar` will be horizontal.
``FPB_VERTICAL`` 0x10 `FoldPanelBar` will be vertical.
========================== =========== ==================================================
Events Processing
=================
This class processes the following events:
================== ==================================================
Event Name Description
================== ==================================================
``EVT_CAPTIONBAR`` The user has pressed the caption bar: `FoldPanelBar` will either expand or collapse the underlying panel.
================== ==================================================
License And Version
===================
FoldPanelBar is distributed under the wxPython license.
Latest Revision: Andrea Gavana @ 27 Nov 2009, 15.00 GMT
Version 0.5
"""
import wx
#----------------------------------------------------------------------
# Collapsed And Expanded Bitmap Images
# Created With img2py.py
#----------------------------------------------------------------------
from wx.lib.embeddedimage import PyEmbeddedImage
CollapsedIcon = PyEmbeddedImage(
"iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABHNCSVQICAgIfAhkiAAAADdJ"
"REFUOI1jZGRiZqAEMFGke/Ab8P/f3/8D5wKY7YRcQRsXoNuKzxXUdwEu23CJU+wCxtG8wAAA"
"mvUb+vltJD8AAAAASUVORK5CYII=")
ExpandedIcon = PyEmbeddedImage(
"iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABHNCSVQICAgIfAhkiAAAAEJJ"
"REFUOI1jZGRiZqAEMFGke1AYwIIu8P/f3/+4FDMyMTNS3QUYBmCzBZ84bQIR3TZcttPOBci2"
"4rOdKi5gHM0LDACevARXGc9htQAAAABJRU5ErkJggg==")
#----------------------------------------------------------------------
# FOLDPANELBAR Starts Here
#----------------------------------------------------------------------
# CAPTIONBAR STYLES
#
#- CAPTIONBAR_GRADIENT_V: Draws a vertical gradient from top to bottom
#- CAPTIONBAR_GRADIENT_H: Draws a horizontal gradient from left to right
#- CAPTIONBAR_SINGLE: Draws a single filled rectangle to draw the caption
#- CAPTIONBAR_RECTANGLE: Draws a single colour with a rectangle around the caption
#- CAPTIONBAR_FILLED_RECTANGLE: Draws a filled rectangle and a border around it
CAPTIONBAR_NOSTYLE = 0
CAPTIONBAR_GRADIENT_V = 1
CAPTIONBAR_GRADIENT_H = 2
CAPTIONBAR_SINGLE = 3
CAPTIONBAR_RECTANGLE = 4
CAPTIONBAR_FILLED_RECTANGLE = 5
FPB_EXTRA_X = 10
FPB_EXTRA_Y = 4
# pixels of the bmp to be aligned from the right filled with space
FPB_BMP_RIGHTSPACE = 2
# Now supported! Single fold forces
# other panels to close when they are open, and only opens the current panel.
# This will allow the open panel to gain the full size left in the client area
FPB_SINGLE_FOLD = 0x0001
""" Single fold forces other panels to close when they are open, and only opens""" \
""" the current panel. This will allow the open panel to gain the full size left""" \
""" in the client area. This is an extra style. """
# All panels are stacked to the bottom. When they are expanded again they
# show up at the top
FPB_COLLAPSE_TO_BOTTOM = 0x0002
""" All panels are stacked to the bottom. When they are expanded again they show""" \
""" up at the top. This is an extra style. """
# Now supported! Single fold plus panels
# will be stacked at the bottom
FPB_EXCLUSIVE_FOLD = 0x0004
""" ``FPB_SINGLE_FOLD`` style plus the panels will be stacked at the bottom. """ \
""" This is an extra style. """
# Orientation Flag
FPB_HORIZONTAL = 0x0008
""" `FoldPanelBar` will be horizontal. """
FPB_VERTICAL = 0x0010
""" `FoldPanelBar` will be vertical. """
# FoldPanelItem default settings
FPB_ALIGN_LEFT = 0
FPB_ALIGN_WIDTH = 1
FPB_DEFAULT_LEFTSPACING = 5
FPB_DEFAULT_RIGHTSPACING = 10
FPB_DEFAULT_SPACING = 8
FPB_DEFAULT_LEFTLINESPACING = 2
FPB_DEFAULT_RIGHTLINESPACING = 2
# ------------------------------------------------------------------------------ #
# class CaptionBarStyle
# ------------------------------------------------------------------------------ #
class CaptionBarStyle(object):
"""
This class encapsulates the styles you wish to set for the
`CaptionBar` (this is the part of the FoldPanel where the caption
is displayed). It can either be applied at creation time be
reapplied when styles need to be changed.
At construction time, all styles are set to their default
transparency. This means none of the styles will be applied to
the `CaptionBar` in question, meaning it will be created using the
default internals. When setting i.e the colour, font or panel
style, these styles become active to be used.
"""
def __init__(self):
""" Default constructor for this class."""
self.ResetDefaults()
def ResetDefaults(self):
""" Resets default CaptionBarStyle."""
self._firstColourUsed = False
self._secondColourUsed = False
self._textColourUsed = False
self._captionFontUsed = False
self._captionStyleUsed = False
self._captionStyle = CAPTIONBAR_GRADIENT_V
# ------- CaptionBar Font -------
def SetCaptionFont(self, font):
"""
Sets font for the caption bar.
:param `font`: a valid `wx.Font` object.
:note: If this is not set, the font property is undefined and will not be used.
Use L{CaptionFontUsed} to check if this style is used.
"""
self._captionFont = font
self._captionFontUsed = True
def CaptionFontUsed(self):
""" Checks if the caption bar font is set. """
return self._captionFontUsed
def GetCaptionFont(self):
"""
Returns the font for the caption bar.
:note: Please be warned this will result in an assertion failure when
this property is not previously set.
:see: L{SetCaptionFont}, L{CaptionFontUsed}
"""
return self._captionFont
# ------- First Colour -------
def SetFirstColour(self, colour):
"""
Sets first colour for the caption bar.
:param `colour`: a valid `wx.Colour` object.
:note: If this is not set, the colour property is undefined and will not be used.
Use L{FirstColourUsed} to check if this style is used.
"""
self._firstColour = colour
self._firstColourUsed = True
def FirstColourUsed(self):
""" Checks if the first colour of the caption bar is set."""
return self._firstColourUsed
def GetFirstColour(self):
"""
Returns the first colour for the caption bar.
:note: Please be warned this will result in an assertion failure when
this property is not previously set.
:see: L{SetFirstColour}, L{FirstColourUsed}
"""
return self._firstColour
# ------- Second Colour -------
def SetSecondColour(self, colour):
"""
Sets second colour for the caption bar.
:param `colour`: a valid `wx.Colour` object.
:note: If this is not set, the colour property is undefined and will not be used.
Use L{SecondColourUsed} to check if this style is used.
"""
self._secondColour = colour
self._secondColourUsed = True
def SecondColourUsed(self):
""" Checks if the second colour of the caption bar is set."""
return self._secondColourUsed
def GetSecondColour(self):
"""
Returns the second colour for the caption bar.
:note: Please be warned this will result in an assertion failure when
this property is not previously set.
:see: L{SetSecondColour}, L{SecondColourUsed}
"""
return self._secondColour
# ------- Caption Text Colour -------
def SetCaptionColour(self, colour):
"""
Sets caption colour for the caption bar.
:param `colour`: a valid `wx.Colour` object.
:note: If this is not set, the colour property is undefined and will not be used.
Use L{CaptionColourUsed} to check if this style is used.
"""
self._textColour = colour
self._textColourUsed = True
def CaptionColourUsed(self):
""" Checks if the caption colour of the caption bar is set."""
return self._textColourUsed
def GetCaptionColour(self):
"""
Returns the caption colour for the caption bar.
:note: Please be warned this will result in an assertion failure
when this property is not previously set.
:see: L{SetCaptionColour}, L{CaptionColourUsed}
"""
return self._textColour
# ------- CaptionStyle -------
def SetCaptionStyle(self, style):
"""
Sets caption style for the caption bar.
:param `style`: can be one of the following bits:
=============================== ======= =============================
Caption Style Value Description
=============================== ======= =============================
``CAPTIONBAR_GRADIENT_V`` 1 Draws a vertical gradient from top to bottom
``CAPTIONBAR_GRADIENT_H`` 2 Draws a horizontal gradient from left to right
``CAPTIONBAR_SINGLE`` 3 Draws a single filled rectangle to draw the caption
``CAPTIONBAR_RECTANGLE`` 4 Draws a single colour with a rectangle around the caption
``CAPTIONBAR_FILLED_RECTANGLE`` 5 Draws a filled rectangle and a border around it
=============================== ======= =============================
:note: If this is not set, the property is undefined and will not be used.
Use L{CaptionStyleUsed} to check if this style is used.
"""
self._captionStyle = style
self._captionStyleUsed = True
def CaptionStyleUsed(self):
""" Checks if the caption style of the caption bar is set."""
return self._captionStyleUsed
def GetCaptionStyle(self):
"""
Returns the caption style for the caption bar.
:note: Please be warned this will result in an assertion failure
when this property is not previously set.
:see: L{SetCaptionStyle}, L{CaptionStyleUsed}
"""
return self._captionStyle
#-----------------------------------#
# CaptionBarEvent
#-----------------------------------#
wxEVT_CAPTIONBAR = wx.NewEventType()
EVT_CAPTIONBAR = wx.PyEventBinder(wxEVT_CAPTIONBAR, 0)
""" The user has pressed the caption bar: `FoldPanelBar` will either expand or""" \
""" collapse the underlying panel. """
# ---------------------------------------------------------------------------- #
# class CaptionBarEvent
# ---------------------------------------------------------------------------- #
class CaptionBarEvent(wx.PyCommandEvent):
"""
This event will be sent when a ``EVT_CAPTIONBAR`` is mapped in the parent.
It is to notify the parent that the bar is now in collapsed or expanded
state. The parent should re-arrange the associated windows accordingly
"""
def __init__(self, evtType):
"""
Default class constructor.
:param `evtType`: the event type.
"""
wx.PyCommandEvent.__init__(self, evtType)
def GetFoldStatus(self):
"""
Returns whether the bar is expanded or collapsed. ``True`` means
expanded.
"""
return not self._bar.IsCollapsed()
def GetBar(self):
""" Returns the selected L{CaptionBar}. """
return self._bar
def SetTag(self, tag):
"""
Assigns a tag to the selected L{CaptionBar}.
:param `tag`: an instance of L{FoldPanelBar}.
"""
self._tag = tag
def GetTag(self):
""" Returns the tag assigned to the selected L{CaptionBar}. """
return self._tag
def SetBar(self, bar):
"""
Sets the bar associated with this event.
:param `bar`: an instance of L{CaptionBar}.
:note: Should not be used by any other then the originator of the event.
"""
self._bar = bar
# -------------------------------------------------------------------------------- #
# class CaptionBar
# -------------------------------------------------------------------------------- #
class CaptionBar(wx.Window):
"""
This class is a graphical caption component that consists of a
caption and a clickable arrow.
The CaptionBar fires an event ``EVT_CAPTIONBAR`` which is a
L{CaptionBarEvent}. This event can be caught and the parent window
can act upon the collapsed or expanded state of the bar (which is
actually just the icon which changed). The parent panel can
reduce size or expand again.
"""
# Define Empty CaptionBar Style
EmptyCaptionBarStyle = CaptionBarStyle()
def __init__(self, parent, id, pos, size, caption="",
foldIcons=None, cbstyle=EmptyCaptionBarStyle,
rightIndent=FPB_BMP_RIGHTSPACE,
iconWidth=16, iconHeight=16, collapsed=False):
"""
Default class constructor.
:param `parent`: the L{CaptionBar} parent window;
:param `id`: an identifier for the control: a value of -1 is taken to mean a default;
:param `pos`: the control position. A value of (-1, -1) indicates a default position,
chosen by either the windowing system or wxPython, depending on platform;
:param `size`: the control size. A value of (-1, -1) indicates a default size,
chosen by either the windowing system or wxPython, depending on platform;
:param `caption`: the string to be displayed in L{CaptionBar};
:param `foldIcons`: an instance of `wx.ImageList` containing the icons to display
next to the caption text;
:param `cbstyle`: the L{CaptionBar} window style. Must be an instance of
L{CaptionBarStyle};
:param `rightIndent`: number of pixels of the bmp to be aligned from the right filled
with space;
:param `iconWidth`: the L{CaptionBar} icon width;
:param `iconHeight`: the L{CaptionBar} icon height;
:param `collapsed`: ``True`` if the L{CaptionBar} should start in the collapsed state,
``False`` otherwise.
"""
wx.Window.__init__(self, parent, wx.ID_ANY, pos=pos,
size=(20,20), style=wx.NO_BORDER)
self._controlCreated = False
self._collapsed = collapsed
self.ApplyCaptionStyle(cbstyle, True)
if foldIcons is None:
foldIcons = wx.ImageList(16, 16)
bmp = ExpandedIcon.GetBitmap()
foldIcons.Add(bmp)
bmp = CollapsedIcon.GetBitmap()
foldIcons.Add(bmp)
# set initial size
if foldIcons:
assert foldIcons.GetImageCount() > 1
iconWidth, iconHeight = foldIcons.GetSize(0)
self._caption = caption
self._foldIcons = foldIcons
self._style = cbstyle
self._rightIndent = rightIndent
self._iconWidth = iconWidth
self._iconHeight = iconHeight
self._oldSize = wx.Size(20,20)
self._controlCreated = True
self.Bind(wx.EVT_PAINT, self.OnPaint)
self.Bind(wx.EVT_SIZE, self.OnSize)
self.Bind(wx.EVT_MOUSE_EVENTS, self.OnMouseEvent)
self.Bind(wx.EVT_CHAR, self.OnChar)
def ApplyCaptionStyle(self, cbstyle=EmptyCaptionBarStyle, applyDefault=True):
"""
Applies the style defined in `cbstyle` to the L{CaptionBar}.
:param `cbstyle`: an instance of L{CaptionBarStyle};
:param `applyDefault`: if ``True``, the colours used in the L{CaptionBarStyle}
will be reset to their default values.
"""
newstyle = cbstyle
if applyDefault:
# get first colour from style or make it default
if not newstyle.FirstColourUsed():
newstyle.SetFirstColour(wx.WHITE)
# get second colour from style or make it default
if not newstyle.SecondColourUsed():
# make the second colour slightly darker then the background
colour = self.GetParent().GetBackgroundColour()
r, g, b = int(colour.Red()), int(colour.Green()), int(colour.Blue())
colour = ((r >> 1) + 20, (g >> 1) + 20, (b >> 1) + 20)
newstyle.SetSecondColour(wx.Colour(colour[0], colour[1], colour[2]))
# get text colour
if not newstyle.CaptionColourUsed():
newstyle.SetCaptionColour(wx.BLACK)
# get font colour
if not newstyle.CaptionFontUsed():
newstyle.SetCaptionFont(self.GetParent().GetFont())
# apply caption style
if not newstyle.CaptionStyleUsed():
newstyle.SetCaptionStyle(CAPTIONBAR_GRADIENT_V)
self._style = newstyle
def SetCaptionStyle(self, cbstyle=EmptyCaptionBarStyle, applyDefault=True):
"""
Sets L{CaptionBar} styles with L{CaptionBarStyle} class.
:param `cbstyle`: an instance of L{CaptionBarStyle};
:param `applyDefault`: if ``True``, the colours used in the L{CaptionBarStyle}
will be reset to their default values.
:note: All styles that are actually set, are applied. If you set `applyDefault`
to ``True``, all other (not defined) styles will be set to default. If it is
``False``, the styles which are not set in the L{CaptionBarStyle} will be ignored.
"""
self.ApplyCaptionStyle(cbstyle, applyDefault)
self.Refresh()
def GetCaptionStyle(self):
"""
Returns the current style of the captionbar in a L{CaptionBarStyle} class.
:note: This can be used to change and set back the changes.
"""
return self._style
def IsCollapsed(self):
""" Returns wether the status of the bar is expanded or collapsed. """
return self._collapsed
def SetRightIndent(self, pixels):
"""
Sets the amount of pixels on the right from which the bitmap
is trailing.
:param `pixels`: the number of pixels on the right from which the bitmap
is trailing. If this is 0, it will be drawn all the way to the right,
default is equal to ``FPB_BMP_RIGHTSPACE``. Assign this before
assigning an image list to prevent a redraw.
"""
assert pixels >= 0
self._rightIndent = pixels
if self._foldIcons:
self.Refresh()
def Collapse(self):
"""
This sets the internal state/representation to collapsed.
:note: This does not trigger a L{CaptionBarEvent} to be sent to the
parent.
"""
self._collapsed = True
self.RedrawIconBitmap()
def Expand(self):
"""
This sets the internal state/representation to expanded.
:note: This does not trigger a L{CaptionBarEvent} to be sent to the
parent.
"""
self._collapsed = False
self.RedrawIconBitmap()
def SetBoldFont(self):
""" Sets the L{CaptionBar} font weight to bold."""
self.GetFont().SetWeight(wx.BOLD)
def SetNormalFont(self):
""" Sets the L{CaptionBar} font weight to normal."""
self.GetFont().SetWeight(wx.NORMAL)
def IsVertical(self):
"""
Returns wether the L{CaptionBar} has a default orientation or not.
Default is vertical.
"""
fld = self.GetParent().GetGrandParent()
if isinstance(fld, FoldPanelBar):
return self.GetParent().GetGrandParent().IsVertical()
else:
raise Exception("ERROR: Wrong Parent " + repr(fld))
def OnPaint(self, event):
"""
Handles the ``wx.EVT_PAINT`` event for L{CaptionBar}.
:param `event`: a `wx.PaintEvent` event to be processed.
"""
if not self._controlCreated:
event.Skip()
return
dc = wx.PaintDC(self)
wndRect = self.GetRect()
vertical = self.IsVertical()
# TODO: Maybe first a memory DC should draw all, and then paint it on
# the caption. This way a flickering arrow during resize is not visible
self.FillCaptionBackground(dc)
dc.SetFont(self._style.GetCaptionFont())
dc.SetTextForeground(self._style.GetCaptionColour())
if vertical:
dc.DrawText(self._caption, 4, FPB_EXTRA_Y/2)
else:
dc.DrawRotatedText(self._caption, FPB_EXTRA_Y/2,
wndRect.GetBottom() - 4, 90)
# draw small icon, either collapsed or expanded
# based on the state of the bar. If we have any bmp's
if self._foldIcons:
index = self._collapsed
if vertical:
drw = wndRect.GetRight() - self._iconWidth - self._rightIndent
self._foldIcons.Draw(index, dc, drw,
(wndRect.GetHeight() - self._iconHeight)/2,
wx.IMAGELIST_DRAW_TRANSPARENT)
else:
self._foldIcons.Draw(index, dc,
(wndRect.GetWidth() - self._iconWidth)/2,
self._rightIndent, wx.IMAGELIST_DRAW_TRANSPARENT)
## event.Skip()
def FillCaptionBackground(self, dc):
"""
Fills the background of the caption with either a gradient or
a solid colour.
:param `dc`: an instance of `wx.DC`.
"""
style = self._style.GetCaptionStyle()
if style == CAPTIONBAR_GRADIENT_V:
if self.IsVertical():
self.DrawVerticalGradient(dc, self.GetRect())
else:
self.DrawHorizontalGradient(dc, self.GetRect())
elif style == CAPTIONBAR_GRADIENT_H:
if self.IsVertical():
self.DrawHorizontalGradient(dc, self.GetRect())
else:
self.DrawVerticalGradient(dc, self.GetRect())
elif style == CAPTIONBAR_SINGLE:
self.DrawSingleColour(dc, self.GetRect())
elif style == CAPTIONBAR_RECTANGLE or style == CAPTIONBAR_FILLED_RECTANGLE:
self.DrawSingleRectangle(dc, self.GetRect())
else:
raise Exception("STYLE Error: Undefined Style Selected: " + repr(style))
def OnMouseEvent(self, event):
"""
Handles the ``wx.EVT_MOUSE_EVENTS`` event for L{CaptionBar}.
:param `event`: a `wx.MouseEvent` event to be processed.
:note: This method catches the mouse click-double click. If clicked on
the arrow (single) or double on the caption we change state and an event
must be fired to let this panel collapse or expand.
"""
send_event = False
vertical = self.IsVertical()
if event.LeftDown() and self._foldIcons:
pt = event.GetPosition()
rect = self.GetRect()
drw = (rect.GetWidth() - self._iconWidth - self._rightIndent)
if vertical and pt.x > drw or not vertical and \
pt.y < (self._iconHeight + self._rightIndent):
send_event = True
elif event.LeftDClick():
self.SetCursor(wx.StockCursor(wx.CURSOR_ARROW))
send_event = True
elif event.Entering() and self._foldIcons:
pt = event.GetPosition()
rect = self.GetRect()
drw = (rect.GetWidth() - self._iconWidth - self._rightIndent)
if vertical and pt.x > drw or not vertical and \
pt.y < (self._iconHeight + self._rightIndent):
self.SetCursor(wx.StockCursor(wx.CURSOR_HAND))
else:
self.SetCursor(wx.StockCursor(wx.CURSOR_ARROW))
elif event.Leaving():
self.SetCursor(wx.StockCursor(wx.CURSOR_ARROW))
elif event.Moving():
pt = event.GetPosition()
rect = self.GetRect()
drw = (rect.GetWidth() - self._iconWidth - self._rightIndent)
if vertical and pt.x > drw or not vertical and \
pt.y < (self._iconHeight + self._rightIndent):
self.SetCursor(wx.StockCursor(wx.CURSOR_HAND))
else:
self.SetCursor(wx.StockCursor(wx.CURSOR_ARROW))
# send the collapse, expand event to the parent
if send_event:
event = CaptionBarEvent(wxEVT_CAPTIONBAR)
event.SetId(self.GetId())
event.SetEventObject(self)
event.SetBar(self)
self.GetEventHandler().ProcessEvent(event)
def OnChar(self, event):
"""
Handles the ``wx.EVT_CHAR`` event for L{CaptionBar}.
:param `event`: a `wx.KeyEvent` event to be processed.
:note: This method currently does nothing.
"""
# TODO: Anything here?
event.Skip()
def DoGetBestSize(self):
"""
Returns the best size for this panel, based upon the font
assigned to this window, and the caption string.
"""
if self.IsVertical():
x, y = self.GetTextExtent(self._caption)
else:
y, x = self.GetTextExtent(self._caption)
if x < self._iconWidth:
x = self._iconWidth
if y < self._iconHeight:
y = self._iconHeight
# TODO: The extra FPB_EXTRA_X constants should be adjustable as well
return wx.Size(x + FPB_EXTRA_X, y + FPB_EXTRA_Y)
def DrawVerticalGradient(self, dc, rect):
"""
Gradient fill from colour 1 to colour 2 from top to bottom.
:param `dc`: an instance of `wx.DC`;
:param `rect`: the L{CaptionBar} client rectangle.
"""
if rect.height < 1 or rect.width < 1:
return
dc.SetPen(wx.TRANSPARENT_PEN)
# calculate gradient coefficients
col2 = self._style.GetSecondColour()
col1 = self._style.GetFirstColour()
r1, g1, b1 = int(col1.Red()), int(col1.Green()), int(col1.Blue())
r2, g2, b2 = int(col2.Red()), int(col2.Green()), int(col2.Blue())
flrect = float(rect.height)
rstep = float((r2 - r1)) / flrect
gstep = float((g2 - g1)) / flrect
bstep = float((b2 - b1)) / flrect
rf, gf, bf = 0, 0, 0
for y in range(rect.y, rect.y + rect.height):
currCol = (r1 + rf, g1 + gf, b1 + bf)
dc.SetBrush(wx.Brush(currCol, wx.SOLID))
dc.DrawRectangle(rect.x, rect.y + (y - rect.y), rect.width, rect.height)
rf = rf + rstep
gf = gf + gstep
bf = bf + bstep
def DrawHorizontalGradient(self, dc, rect):
"""
Gradient fill from colour 1 to colour 2 from left to right.
:param `dc`: an instance of `wx.DC`;
:param `rect`: the L{CaptionBar} client rectangle.
"""
if rect.height < 1 or rect.width < 1:
return
dc.SetPen(wx.TRANSPARENT_PEN)
# calculate gradient coefficients
col2 = self._style.GetSecondColour()
col1 = self._style.GetFirstColour()
r1, g1, b1 = int(col1.Red()), int(col1.Green()), int(col1.Blue())
r2, g2, b2 = int(col2.Red()), int(col2.Green()), int(col2.Blue())
flrect = float(rect.width)
rstep = float((r2 - r1)) / flrect
gstep = float((g2 - g1)) / flrect
bstep = float((b2 - b1)) / flrect
rf, gf, bf = 0, 0, 0
for x in range(rect.x, rect.x + rect.width):
currCol = (r1 + rf, g1 + gf, b1 + bf)
dc.SetBrush(wx.Brush(currCol, wx.SOLID))
dc.DrawRectangle(rect.x + (x - rect.x), rect.y, 1, rect.height)
rf = rf + rstep
gf = gf + gstep
bf = bf + bstep
def DrawSingleColour(self, dc, rect):
"""
Single colour fill for L{CaptionBar}.
:param `dc`: an instance of `wx.DC`;
:param `rect`: the L{CaptionBar} client rectangle.
"""
if rect.height < 1 or rect.width < 1:
return
dc.SetPen(wx.TRANSPARENT_PEN)
# draw simple rectangle
dc.SetBrush(wx.Brush(self._style.GetFirstColour(), wx.SOLID))
dc.DrawRectangle(rect.x, rect.y, rect.width, rect.height)
def DrawSingleRectangle(self, dc, rect):
"""
Single rectangle for L{CaptionBar}.
:param `dc`: an instance of `wx.DC`;
:param `rect`: the L{CaptionBar} client rectangle.
"""
if rect.height < 2 or rect.width < 1:
return
# single frame, set up internal fill colour
if self._style.GetCaptionStyle() == CAPTIONBAR_RECTANGLE:
colour = self.GetParent().GetBackgroundColour()
br = wx.Brush(colour, wx.SOLID)
else:
colour = self._style.GetFirstColour()
br = wx.Brush(colour, wx.SOLID)
# setup the pen frame
pen = wx.Pen(self._style.GetSecondColour())
dc.SetPen(pen)
dc.SetBrush(br)
dc.DrawRectangle(rect.x, rect.y, rect.width, rect.height - 1)
bgpen = wx.Pen(self.GetParent().GetBackgroundColour())
dc.SetPen(bgpen)
dc.DrawLine(rect.x, rect.y + rect.height - 1, rect.x + rect.width,
rect.y + rect.height - 1)
def OnSize(self, event):
"""
Handles the ``wx.EVT_SIZE`` event for L{CaptionBar}.
:param `event`: a `wx.SizeEvent` event to be processed.
"""
if not self._controlCreated:
event.Skip()
return
size = event.GetSize()
if self._foldIcons:
# What I am doing here is simply invalidating the part of the window
# exposed. So when I make a rect with as width the newly exposed part,
# and the x,y of the old window size origin, I don't need a bitmap
# calculation in it, or do I ? The bitmap needs redrawing anyway.
# Leave it like this until I figured it out.
# set rect to redraw as old bitmap area which is entitled to redraw
rect = wx.Rect(size.GetWidth() - self._iconWidth - self._rightIndent, 0,
self._iconWidth + self._rightIndent,
self._iconWidth + self._rightIndent)
# adjust rectangle when more is slided so we need to redraw all
# the old stuff but not all (ugly flickering)
diffX = size.GetWidth() - self._oldSize.GetWidth()
if diffX > 1:
# adjust the rect with all the crap to redraw
rect.SetWidth(rect.GetWidth() + diffX + 10)
rect.SetX(rect.GetX() - diffX - 10)
self.RefreshRect(rect)
else:
rect = self.GetRect()
self.RefreshRect(rect)
self._oldSize = size
def RedrawIconBitmap(self):
""" Redraws the icons (if they exists). """
if self._foldIcons:
# invalidate the bitmap area and force a redraw
rect = self.GetRect()
rect.SetX(rect.GetWidth() - self._iconWidth - self._rightIndent)
rect.SetWidth(self._iconWidth + self._rightIndent)
self.RefreshRect(rect)
# ---------------------------------------------------------------------------------- #
# class FoldPanelBar
# ---------------------------------------------------------------------------------- #
class FoldPanelBar(wx.Panel):
"""
The FoldPanelBar is a class which can maintain a list of
collapsable panels. Once a panel is collapsed, only it's caption
bar is visible to the user. This will provide more space for the
other panels, or allow the user to close panels which are not used
often to get the most out of the work area.
This control is easy to use. Simply create it as a child for a
panel or sash window, and populate panels with
L{FoldPanelBar.AddFoldPanel}. Then use the L{FoldPanelBar.AddFoldPanelWindow} to add
`wx.Window` derived controls to the current fold panel. Use
L{FoldPanelBar.AddFoldPanelSeparator} to put separators between the groups of
controls that need a visual separator to group them
together. After all is constructed, the user can fold the panels
by double clicking on the bar or single click on the arrow, which
will indicate the collapsed or expanded state.
"""
# Define Empty CaptionBar Style
EmptyCaptionBarStyle = CaptionBarStyle()
def __init__(self, parent, id=-1, pos=wx.DefaultPosition, size=wx.DefaultSize,
style=wx.TAB_TRAVERSAL|wx.NO_BORDER, agwStyle=0):
"""
Default class constructor.
:param `parent`: the L{FoldPanelBar} parent window;
:param `id`: an identifier for the control: a value of -1 is taken to mean a default;
:param `pos`: the control position. A value of (-1, -1) indicates a default position,
chosen by either the windowing system or wxPython, depending on platform;
:param `size`: the control size. A value of (-1, -1) indicates a default size,
chosen by either the windowing system or wxPython, depending on platform;
:param `style`: the underlying `wx.Panel` window style;
:param `agwStyle`: the AGW-specific L{FoldPanelBar} window style. It can be one of the
following bits:
========================== =========== ==================================================
Window Styles Hex Value Description
========================== =========== ==================================================
``FPB_SINGLE_FOLD`` 0x1 Single fold forces other panels to close when they are open, and only opens the current panel. This will allow the open panel to gain the full size left in the client area.
``FPB_COLLAPSE_TO_BOTTOM`` 0x2 All panels are stacked to the bottom. When they are expanded again they show up at the top.
``FPB_EXCLUSIVE_FOLD`` 0x4 ``FPB_SINGLE_FOLD`` style plus the panels will be stacked at the bottom.
``FPB_HORIZONTAL`` 0x4 `FoldPanelBar` will be horizontal.
``FPB_VERTICAL`` 0x8 `FoldPanelBar` will be vertical.
========================== =========== ==================================================
"""
self._controlCreated = False
# make sure there is any orientation
if agwStyle & FPB_HORIZONTAL != FPB_HORIZONTAL:
agwStyle = agwStyle | FPB_VERTICAL
if agwStyle & FPB_HORIZONTAL == 4:
self._isVertical = False
else:
self._isVertical = True
self._agwStyle = agwStyle
# create the panel (duh!). This causes a size event, which we are going
# to skip when we are not initialised
wx.Panel.__init__(self, parent, id, pos, size, style)
# the fold panel area
self._foldPanel = wx.Panel(self, wx.ID_ANY, pos, size,
wx.NO_BORDER | wx.TAB_TRAVERSAL)
self._controlCreated = True
self._panels = []
self.Bind(EVT_CAPTIONBAR, self.OnPressCaption)
self.Bind(wx.EVT_SIZE, self.OnSizePanel)
def AddFoldPanel(self, caption="", collapsed=False, foldIcons=None,
cbstyle=EmptyCaptionBarStyle):
"""
Adds a fold panel to the list of panels.
:param `caption`: the caption to be displayed in the associated L{CaptionBar};
:param `collapsed`: if set to ``True``, the panel is collapsed initially;
:param `foldIcons`: an instance of `wx.ImageList` containing the icons to display
next to the caption text;
:param `cbstyle`: an instance of L{CaptionBarStyle}.
:note: The FoldPanel item which is returned, can be used as a reference to perform
actions upon the fold panel like collapsing it, expanding it, or deleting it
from the list. Use this foldpanel to add windows to it.
:see: L{AddFoldPanelWindow} and L{AddFoldPanelSeparator} to see how to add
items derived from `wx.Window` to the panels.
"""
# create a fold panel item, which is first only the caption.
# the user can now add a panel area which will be folded in
# when pressed.
if foldIcons is None:
foldIcons = wx.ImageList(16, 16)
bmp = ExpandedIcon.GetBitmap()
foldIcons.Add(bmp)
bmp = CollapsedIcon.GetBitmap()
foldIcons.Add(bmp)
item = FoldPanelItem(self._foldPanel, -1, caption=caption,
foldIcons=foldIcons,
collapsed=collapsed, cbstyle=cbstyle)
pos = 0
if len(self._panels) > 0:
pos = self._panels[-1].GetItemPos() + self._panels[-1].GetPanelLength()
item.Reposition(pos)
self._panels.append(item)
return item
def AddFoldPanelWindow(self, panel, window, flags=FPB_ALIGN_WIDTH,
Spacing=FPB_DEFAULT_SPACING,
leftSpacing=FPB_DEFAULT_LEFTLINESPACING,
rightSpacing=FPB_DEFAULT_RIGHTLINESPACING):
"""
Adds a `wx.Window` derived instance to the referenced fold panel.
:param `panel`: an instance of L{FoldPanelItem};
:param `window`: the window we wish to add to the fold panel, an instance
of `wx.Window`;
:param `flags`: can be one of the following bits:
====================== ======= ====================================
Align Flag Value Description
====================== ======= ====================================
``FPB_ALIGN_WIDTH`` 1 The `wx.Window` to be added will be aligned to fit the width of the FoldPanel when it is resized. Very handy for sizer items, buttons and text boxes.
``FPB_ALIGN_LEFT`` 0 Aligns left instead of fitting the width of the child window to be added. Use either this one or ``FPB_ALIGN_WIDTH``.
====================== ======= ====================================
:param `Spacing`: the `wx.Window` to be added can be slightly indented from
left and right so it is more visibly placed in the fold panel. Use `Spacing` > 0
to give the control an y offset from the previous `wx.Window` added;
:param `leftSpacing`: give the `wx.Window` added a slight indent from the left;
:param `rightSpacing`: give the `wx.Window` added a slight indent from the right;
:note: Make the window be a child of the fold panel!
The following example adds a FoldPanel to the FoldPanelBar and
adds two `wx.Window` derived controls to the FoldPanel::
# Create the FoldPanelBar
m_pnl = FoldPanelBar(self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, agwStyle=0x2)
# Add a foldpanel to the control. "Test me" is the caption and it is
# initially not collapsed.
item = m_pnl.AddFoldPanel("Test me", False)
# Now add a button to the fold panel. Mind that the button should be
# made child of the FoldPanel and not of the main form.
m_pnl.AddFoldPanelWindow(item, wx.Button(item, ID_COLLAPSEME, "Collapse Me"))
# Add a separator between the two controls. This is purely a visual
# line that can have a certain colour and also the indents and width
# aligning like a control.
m_pnl.AddFoldPanelSeparator(item)
# Now add a text ctrl. Also very easy. Align this on width so that
# when the control gets wider the text control also sizes along.
m_pnl.AddFoldPanelWindow(item, wx.TextCtrl(item, wx.ID_ANY, "Comment"), FPB_ALIGN_WIDTH, FPB_DEFAULT_SPACING, 20)
"""
try:
item = self._panels.index(panel)
except:
raise Exception("ERROR: Invalid Panel Passed To AddFoldPanelWindow: " + repr(panel))
panel.AddWindow(window, flags, Spacing, leftSpacing, rightSpacing)
# TODO: Take old and new height, and if difference, reposition all the lower
# panels this is because the user can add new wxWindow controls somewhere in
# between when other panels are already present.
return 0
def AddFoldPanelSeparator(self, panel, colour=wx.BLACK,
Spacing=FPB_DEFAULT_SPACING,
leftSpacing=FPB_DEFAULT_LEFTLINESPACING,
rightSpacing=FPB_DEFAULT_RIGHTLINESPACING):
"""
Adds a separator line to the current fold panel.
The separator is a simple line which is drawn and is no real
component. It can be used to separate groups of controls
which belong to each other.
:param `colour`: the separator colour, an instance of `wx.Colour`;
:param `Spacing`: the separator to be added can be slightly indented from
left and right so it is more visibly placed in the fold panel. Use `Spacing` > 0
to give the control an y offset from the previous `wx.Window` added;
:param `leftSpacing`: give the added separator a slight indent from the left;
:param `rightSpacing`: give the added separator a slight indent from the right.
"""
try:
item = self._panels.index(panel)
except:
raise Exception("ERROR: Invalid Panel Passed To AddFoldPanelSeparator: " + repr(panel))
panel.AddSeparator(colour, Spacing, leftSpacing, rightSpacing)
return 0
def OnSizePanel(self, event):
"""
Handles the ``wx.EVT_SIZE`` event for L{FoldPanelBar}.
:param `event`: a `wx.SizeEvent` event to be processed.
"""
# skip all stuff when we are not initialised yet
if not self._controlCreated:
event.Skip()
return
foldrect = self.GetRect()
# fold panel itself. If too little space,
# don't show it
foldrect.SetX(0)
foldrect.SetY(0)
self._foldPanel.SetSize(foldrect[2:])
if self._agwStyle & FPB_COLLAPSE_TO_BOTTOM or self._agwStyle & FPB_EXCLUSIVE_FOLD:
rect = self.RepositionCollapsedToBottom()
vertical = self.IsVertical()
if vertical and rect.GetHeight() > 0 or not vertical and rect.GetWidth() > 0:
self.RefreshRect(rect)
# TODO: A smart way to check wether the old - new width of the
# panel changed, if so no need to resize the fold panel items
self.RedisplayFoldPanelItems()
def OnPressCaption(self, event):
"""
Handles the ``wx.EVT_CAPTIONBAR`` event for L{CaptionBar}.
:param `event`: a L{CaptionBarEvent} event to be processed.
"""
# act upon the folding or expanding status of the bar
# to expand or collapse the panel(s)
if event.GetFoldStatus():
self.Collapse(event.GetTag())
else:
self.Expand(event.GetTag())
def RefreshPanelsFrom(self, item):
"""
Refreshes all the panels from given one down to last one.
:param `item`: the first L{FoldPanelItem} to be refreshed.
"""
try:
i = self._panels.index(item)
except:
raise Exception("ERROR: Invalid Panel Passed To RefreshPanelsFrom: " + repr(item))
self.Freeze()
# if collapse to bottom is on, the panels that are not expanded
# should be drawn at the bottom. All panels that are expanded
# are drawn on top. The last expanded panel gets all the extra space
if self._agwStyle & FPB_COLLAPSE_TO_BOTTOM or self._agwStyle & FPB_EXCLUSIVE_FOLD:
offset = 0
for panels in self._panels:
if panels.IsExpanded():
offset = offset + panels.Reposition(offset)
# put all non collapsed panels at the bottom where there is space,
# else put them right behind the expanded ones
self.RepositionCollapsedToBottom()
else:
pos = self._panels[i].GetItemPos() + self._panels[i].GetPanelLength()
for j in range(i+1, len(self._panels)):
pos = pos + self._panels[j].Reposition(pos)
self.Thaw()
def RedisplayFoldPanelItems(self):
""" Resizes the fold panels so they match the width. """
# resize them all. No need to reposition
for panels in self._panels:
panels.ResizePanel()
panels.Refresh()
def RepositionCollapsedToBottom(self):
"""
Repositions all the collapsed panels to the bottom.
When it is not possible to align them to the bottom, stick them behind
the visible panels.
"""
value = wx.Rect(0,0,0,0)
vertical = self.IsVertical()
# determine wether the number of panels left
# times the size of their captions is enough
# to be placed in the left over space
expanded = 0
collapsed = 0
collapsed, expanded, values = self.GetPanelsLength(collapsed, expanded)
# if no room stick them behind the normal ones, else
# at the bottom
if (vertical and [self.GetSize().GetHeight()] or \
[self.GetSize().GetWidth()])[0] - expanded - collapsed < 0:
offset = expanded
else:
# value is the region which is left unpainted
# I will send it back as 'slack' so it does not need to
# be recalculated.
value.SetHeight(self.GetSize().GetHeight())
value.SetWidth(self.GetSize().GetWidth())
if vertical:
value.SetY(expanded)
value.SetHeight(value.GetHeight() - expanded)
else:
value.SetX(expanded)
value.SetWidth(value.GetWidth() - expanded)
offset = (vertical and [self.GetSize().GetHeight()] or \
[self.GetSize().GetWidth()])[0] - collapsed
# go reposition
for panels in self._panels:
if not panels.IsExpanded():
offset = offset + panels.Reposition(offset)
return value
def GetPanelsLength(self, collapsed, expanded):
"""
Returns the length of the panels that are expanded and
collapsed.
:param `collapsed`: the current value of the collapsed panels;
:param `expanded`: the current value of the expanded panels.
:note: This is useful to determine quickly what size is used to display,
and what is left at the bottom (right) to align the collapsed panels.
"""
value = 0
# assumed here that all the panels that are expanded
# are positioned after each other from 0,0 to end.
for j in range(0, len(self._panels)):
offset = self._panels[j].GetPanelLength()
value = value + offset
if self._panels[j].IsExpanded():
expanded = expanded + offset
else:
collapsed = collapsed + offset
return collapsed, expanded, value
def Collapse(self, foldpanel):
"""
Collapses the given fold panel reference, and updates the foldpanel bar.
:param `foldpanel`: an instance of L{FoldPanelItem}.
:note: With the ``FPB_COLLAPSE_TO_BOTTOM`` style set, all collapsed captions
are put at the bottom of the control. In the normal mode, they stay where
they are.
"""
try:
item = self._panels.index(foldpanel)
except:
raise Exception("ERROR: Invalid Panel Passed To Collapse: " + repr(foldpanel))
foldpanel.Collapse()
self.RefreshPanelsFrom(foldpanel)
def Expand(self, foldpanel):
"""
Expands the given fold panel reference, and updates the foldpanel bar.
:param `foldpanel`: an instance of L{FoldPanelItem}.
:note: With the ``FPB_COLLAPSE_TO_BOTTOM`` style set, they will be removed
from the bottom and the order where the panel originally was placed is
restored.
"""
fpbextrastyle = 0
if self._agwStyle & FPB_SINGLE_FOLD or self._agwStyle & FPB_EXCLUSIVE_FOLD:
fpbextrastyle = 1
for panel in self._panels:
panel.Collapse()
foldpanel.Expand()
if fpbextrastyle:
if self._agwStyle & FPB_EXCLUSIVE_FOLD:
self.RepositionCollapsedToBottom()
self.RefreshPanelsFrom(self._panels[0])
else:
self.RefreshPanelsFrom(foldpanel)
def ApplyCaptionStyle(self, foldpanel, cbstyle):
"""
Sets the style of the caption bar (L{CaptionBar}) of the fold panel.
:param `foldpanel`: an instance of L{FoldPanelItem};
:param `cbstyle`: an instance of L{CaptionBarStyle}.
:note: The changes are applied immediately. All styles not set in the
L{CaptionBarStyle} class are not applied. Use the L{CaptionBar} reference
to indicate what captionbar you want to apply the style to. To apply one
style to all L{CaptionBar} items, use L{ApplyCaptionStyleAll}.
"""
foldpanel.ApplyCaptionStyle(cbstyle)
def ApplyCaptionStyleAll(self, cbstyle):
"""
Sets the style of all the caption bars of the fold panel.
The changes are applied immediately.
:param `cbstyle`: an instance of L{CaptionBarStyle}.
"""
for panels in self._panels:
self.ApplyCaptionStyle(panels, cbstyle)
def GetCaptionStyle(self, foldpanel):
"""
Returns the currently used caption style for the fold panel.
It is returned as a L{CaptionBarStyle} class. After modifying it, it can
be set again.
:param `foldpanel`: an instance of L{FoldPanelItem}.
"""
return foldpanel.GetCaptionStyle()
def IsVertical(self):
"""
Returns whether the L{CaptionBar} has default orientation or not.
Default is vertical.
"""
return self._isVertical
def GetFoldPanel(self, item):
"""
Returns the panel associated with the index `item`.
:param `item`: an integer representing the L{FoldPanelItem} in the list of
panels in this L{FoldPanelBar}.
"""
try:
ind = self._panels[item]
return self._panels[item]
except:
raise Exception("ERROR: List Index Out Of Range Or Bad Item Passed: " + repr(item) + \
". Item Should Be An Integer Between " + repr(0) + " And " + \
repr(len(self._panels)))
def GetCount(self):
""" Returns the number of panels in the L{FoldPanelBar}. """
try:
return len(self._panels)
except:
raise Exception("ERROR: No Panels Have Been Added To FoldPanelBar")
# --------------------------------------------------------------------------------- #
# class FoldPanelItem
# --------------------------------------------------------------------------------- #
class FoldPanelItem(wx.Panel):
"""
This class is a child sibling of the L{FoldPanelBar} class. It will
contain a L{CaptionBar} class for receiving of events, and a the
rest of the area can be populated by a `wx.Panel` derived class.
"""
# Define Empty CaptionBar Style
EmptyCaptionBarStyle = CaptionBarStyle()
def __init__(self, parent, id=wx.ID_ANY, caption="", foldIcons=None,
collapsed=False, cbstyle=EmptyCaptionBarStyle):
"""
Default class constructor.
:param `parent`: the L{FoldPanelItem} parent window;
:param `id`: an identifier for the control: a value of -1 is taken to mean a default;
:param `caption`: the string to be displayed in L{CaptionBar};
:param `foldIcons`: an instance of `wx.ImageList` containing the icons to display
next to the caption text;
:param `collapsed`: ``True`` if the L{CaptionBar} should start in the collapsed state,
``False`` otherwise;
:param `cbstyle`: the L{CaptionBar} window style. Must be an instance of
L{CaptionBarStyle}.
"""
wx.Panel.__init__(self, parent, id, wx.Point(0,0), style=wx.CLIP_CHILDREN)
self._controlCreated = False
self._UserSize = 0
self._PanelSize = 0
self._LastInsertPos = 0
self._itemPos = 0
self._userSized = False
if foldIcons is None:
foldIcons = wx.ImageList(16, 16)
bmp = ExpandedIcon.GetBitmap()
foldIcons.Add(bmp)
bmp = CollapsedIcon.GetBitmap()
foldIcons.Add(bmp)
self._foldIcons = foldIcons
# create the caption bar, in collapsed or expanded state
self._captionBar = CaptionBar(self, wx.ID_ANY, wx.Point(0,0),
size=wx.DefaultSize, caption=caption,
foldIcons=foldIcons, cbstyle=cbstyle)
if collapsed:
self._captionBar.Collapse()
self._controlCreated = True
# make initial size for component, if collapsed, the
# size is determined on the panel height and won't change
size = self._captionBar.GetSize()
self._PanelSize = (self.IsVertical() and [size.GetHeight()] or \
[size.GetWidth()])[0]
self._LastInsertPos = self._PanelSize
self._items = []
self.Bind(EVT_CAPTIONBAR, self.OnPressCaption)
self.Bind(wx.EVT_PAINT, self.OnPaint)
def AddWindow(self, window, flags=FPB_ALIGN_WIDTH, Spacing=FPB_DEFAULT_SPACING,
leftSpacing=FPB_DEFAULT_LEFTLINESPACING,
rightSpacing=FPB_DEFAULT_RIGHTLINESPACING):
"""
Adds a window item to the list of items on this panel.
:param `window`: an instance of `wx.Window`;
:param `flags`: can be one of the following bits:
====================== ======= ====================================
Align Flag Value Description
====================== ======= ====================================
``FPB_ALIGN_WIDTH`` 1 The `wx.Window` to be added will be aligned to fit the width of the FoldPanel when it is resized. Very handy for sizer items, buttons and text boxes.
``FPB_ALIGN_LEFT`` 0 Aligns left instead of fitting the width of the child window to be added. Use either this one or ``FPB_ALIGN_WIDTH``.
====================== ======= ====================================
:param `Spacing`: reserves a number of pixels before the window element;
:param `leftSpacing`: an indent, in pixels;
:param `rightSpacing`: a right spacing, only relevant when the style
``FPB_ALIGN_WIDTH`` is chosen.
"""
wi = FoldWindowItem(self, window, Type="WINDOW", flags=flags, Spacing=Spacing,
leftSpacing=leftSpacing, rightSpacing=rightSpacing)
self._items.append(wi)
vertical = self.IsVertical()
self._Spacing = Spacing
self._leftSpacing = leftSpacing
self._rightSpacing = rightSpacing
xpos = (vertical and [leftSpacing] or [self._LastInsertPos + Spacing])[0]
ypos = (vertical and [self._LastInsertPos + Spacing] or [leftSpacing])[0]
window.SetDimensions(xpos, ypos, -1, -1, wx.SIZE_USE_EXISTING)
self._LastInsertPos = self._LastInsertPos + wi.GetWindowLength(vertical)
self.ResizePanel()
def AddSeparator(self, colour=wx.BLACK, Spacing=FPB_DEFAULT_SPACING,
leftSpacing=FPB_DEFAULT_LEFTSPACING,
rightSpacing=FPB_DEFAULT_RIGHTSPACING):
"""
Adds a separator item to the list of items on this panel.
:param `colour`: the separator colour, an instance of `wx.Colour`;
:param `Spacing`: the separator to be added can be slightly indented from
left and right so it is more visibly placed in the fold panel. Use `Spacing` > 0
to give the control an y offset from the previous `wx.Window` added;
:param `leftSpacing`: give the added separator a slight indent from the left;
:param `rightSpacing`: give the added separator a slight indent from the right.
"""
wi = FoldWindowItem(self, window=None, Type="SEPARATOR",
flags=FPB_ALIGN_WIDTH, y=self._LastInsertPos,
colour=colour, Spacing=Spacing, leftSpacing=leftSpacing,
rightSpacing=rightSpacing)
self._items.append(wi)
self._LastInsertPos = self._LastInsertPos + \
wi.GetWindowLength(self.IsVertical())
self.ResizePanel()
def Reposition(self, pos):
"""
Repositions this L{FoldPanelItem} and reports the length occupied
for the next L{FoldPanelItem} in the list.
:param `pos`: the new item position.
"""
# NOTE: Call Resize before Reposition when an item is added, because the new
# size needed will be calculated by Resize. Of course the relative position
# of the controls have to be correct in respect to the caption bar
self.Freeze()
vertical = self.IsVertical()
xpos = (vertical and [-1] or [pos])[0]
ypos = (vertical and [pos] or [-1])[0]
self.SetDimensions(xpos, ypos, -1, -1, wx.SIZE_USE_EXISTING)
self._itemPos = pos
self.Thaw()
return self.GetPanelLength()
def OnPressCaption(self, event):
"""
Handles the ``wx.EVT_CAPTIONBAR`` event for L{FoldPanelItem}.
:param `event`: a L{CaptionBarEvent} event to be processed.
"""
# tell the upper container we are responsible
# for this event, so it can fold the panel item
# and do a refresh
event.SetTag(self)
event.Skip()
def ResizePanel(self):
""" Resizes the panel. """
# prevent unnecessary updates by blocking repaints for a sec
self.Freeze()
vertical = self.IsVertical()
# force this panel to take the width of the parent panel and the y of the
# user or calculated width (which will be recalculated by the contents here)
if self._captionBar.IsCollapsed():
size = self._captionBar.GetSize()
self._PanelSize = (vertical and [size.GetHeight()] or [size.GetWidth()])[0]
else:
size = self.GetBestSize()
self._PanelSize = (vertical and [size.GetHeight()] or [size.GetWidth()])[0]
if self._UserSize:
if vertical:
size.SetHeight(self._UserSize)
else:
size.SetWidth(self._UserSize)
pnlsize = self.GetParent().GetSize()
if vertical:
size.SetWidth(pnlsize.GetWidth())
else:
size.SetHeight(pnlsize.GetHeight())
# resize caption bar
xsize = (vertical and [size.GetWidth()] or [-1])[0]
ysize = (vertical and [-1] or [size.GetHeight()])[0]
self._captionBar.SetSize((xsize, ysize))
# resize the panel
self.SetSize(size)
# go by all the controls and call Layout
for items in self._items:
items.ResizeItem((vertical and [size.GetWidth()] or \
[size.GetHeight()])[0], vertical)
self.Thaw()
def OnPaint(self, event):
"""
Handles the ``wx.EVT_PAINT`` event for L{FoldPanelItem}.
:param `event`: a `wx.PaintEvent` event to be processed.
"""
# draw all the items that are lines
dc = wx.PaintDC(self)
vertical = self.IsVertical()
for item in self._items:
if item.GetType() == "SEPARATOR":
pen = wx.Pen(item.GetLineColour(), 1, wx.SOLID)
dc.SetPen(pen)
a = item.GetLeftSpacing()
b = item.GetLineY() + item.GetSpacing()
c = item.GetLineLength()
d = a + c
if vertical:
dc.DrawLine(a, b, d, b)
else:
dc.DrawLine(b, a, b, d)
event.Skip()
def IsVertical(self):
"""
Returns whether the L{CaptionBar} has default orientation or not.
Default is vertical.
"""
# grandparent of FoldPanelItem is FoldPanelBar
# default is vertical
if isinstance(self.GetGrandParent(), FoldPanelBar):
return self.GetGrandParent().IsVertical()
else:
raise Exception("ERROR: Wrong Parent " + repr(self.GetGrandParent()))
def IsExpanded(self):
"""
Returns expanded or collapsed status. If the panel is
expanded, ``True`` is returned.
"""
return not self._captionBar.IsCollapsed()
def GetItemPos(self):
""" Returns item's position. """
return self._itemPos
def Collapse(self):
"""
Internal method.
This should not be called by the user, because it doesn't trigger the
parent to tell it that we are collapsed or expanded, it only changes
visual state.
"""
self._captionBar.Collapse()
self.ResizePanel()
def Expand(self):
"""
Internal method.
This should not be called by the user, because it doesn't trigger the
parent to tell it that we are collapsed or expanded, it only changes
visual state.
"""
self._captionBar.Expand()
self.ResizePanel()
def GetPanelLength(self):
""" Returns size of panel. """
if self._captionBar.IsCollapsed():
return self.GetCaptionLength()
elif self._userSized:
return self._UserSize
return self._PanelSize
def GetCaptionLength(self):
""" Returns height of caption only. This is for folding calculation purposes. """
size = self._captionBar.GetSize()
return (self.IsVertical() and [size.GetHeight()] or [size.GetWidth()])[0]
def ApplyCaptionStyle(self, cbstyle):
""" Applies the style defined in `cbstyle` to the L{CaptionBar}."""
self._captionBar.SetCaptionStyle(cbstyle)
def GetCaptionStyle(self):
"""
Returns the current style of the captionbar in a L{CaptionBarStyle} class.
This can be used to change and set back the changes.
"""
return self._captionBar.GetCaptionStyle()
# ----------------------------------------------------------------------------------- #
# class FoldWindowItem
# ----------------------------------------------------------------------------------- #
class FoldWindowItem(object):
"""
This class is a child sibling of the L{FoldPanelItem} class. It
will contain `wx.Window` that can be either a separator (a coloured
line simulated by a `wx.Window`) or a wxPython controls (such as a
`wx.Button`, a `wx.ListCtrl` etc...).
"""
def __init__(self, parent, window=None, **kw):
"""
Default class constructor
:param `parent`: the L{FoldWindowItem} parent;
:param `window`: the window contained in this item.
:keyword `Type`: can be "WINDOW" or "SEPARATOR";
:keyword `lineColour`: the separator colour (meaningful for separators only);
:keyword `y`: the separator y position (meaningful for separators only);
:keyword `flags`: the alignment flags;
:keyword `Spacing`: reserves a number of pixels before the window/separator element;
:keyword `leftSpacing`: an indent, in pixels;
:keyword `rightSpacing`: a right spacing, only relevant when the style
``FPB_ALIGN_WIDTH`` is chosen.
:see: L{FoldPanelBar.AddFoldPanelWindow} for a list of valid alignment flags.
"""
if not kw.has_key("Type"):
raise Exception('ERROR: Missing Window Type Information. This Should Be "WINDOW" Or "SEPARATOR"')
if kw.get("Type") == "WINDOW":
# Window constructor. This initialises the class as a wx.Window Type
if kw.has_key("flags"):
self._flags = kw.get("flags")
else:
self._flags = FPB_ALIGN_WIDTH
if kw.has_key("Spacing"):
self._Spacing = kw.get("Spacing")
else:
self._Spacing = FPB_DEFAULT_SPACING
if kw.has_key("leftSpacing"):
self._leftSpacing = kw.get("leftSpacing")
else:
self._leftSpacing = FPB_DEFAULT_LEFTSPACING
if kw.has_key("rightSpacing"):
self._rightSpacing = kw.get("rightSpacing")
else:
self._rightSpacing = FPB_DEFAULT_RIGHTSPACING
self._lineY = 0
self._sepLineColour = None
self._wnd = window
elif kw.get("Type") == "SEPARATOR":
# separator constructor. This initialises the class as a separator type
if kw.has_key("y"):
self._lineY = kw.get("y")
else:
raise Exception("ERROR: Undefined Y Position For The Separator")
if kw.has_key("lineColour"):
self._sepLineColour = kw.get("lineColour")
else:
self._sepLineColour = wx.BLACK
if kw.has_key("flags"):
self._flags = kw.get("flags")
else:
self._flags = FPB_ALIGN_WIDTH
if kw.has_key("Spacing"):
self._Spacing = kw.get("Spacing")
else:
self._Spacing = FPB_DEFAULT_SPACING
if kw.has_key("leftSpacing"):
self._leftSpacing = kw.get("leftSpacing")
else:
self._leftSpacing = FPB_DEFAULT_LEFTSPACING
if kw.has_key("rightSpacing"):
self._rightSpacing = kw.get("rightSpacing")
else:
self._rightSpacing = FPB_DEFAULT_RIGHTSPACING
self._wnd = window
else:
raise Exception("ERROR: Undefined Window Type Selected: " + repr(kw.get("Type")))
self._type = kw.get("Type")
self._lineLength = 0
def GetType(self):
""" Returns the L{FoldWindowItem} type. """
return self._type
def GetLineY(self):
""" Returns the y position of the separator. """
return self._lineY
def GetLineLength(self):
""" Returns the separator line length. """
return self._lineLength
def GetLineColour(self):
""" Returns the separator line colour. """
return self._sepLineColour
def GetLeftSpacing(self):
""" Returns the left indent of L{FoldWindowItem}. """
return self._leftSpacing
def GetRightSpacing(self):
""" Returns the right indent of L{FoldWindowItem}. """
return self._rightSpacing
def GetSpacing(self):
""" Returns the spacing of L{FoldWindowItem}. """
return self._Spacing
def GetWindowLength(self, vertical=True):
"""
Returns space needed by the window if type is L{FoldWindowItem}
"WINDOW" and returns the total size plus the extra spacing.
:param `vertical`: ``True`` if the parent L{FoldPanelBar} is in vertical
mode.
"""
value = 0
if self._type == "WINDOW":
size = self._wnd.GetSize()
value = (vertical and [size.GetHeight()] or [size.GetWidth()])[0] + \
self._Spacing
elif self._type == "SEPARATOR":
value = 1 + self._Spacing
return value
def ResizeItem(self, size, vertical=True):
"""
Resizes the element, whatever it is.
A separator or line will be always aligned by width or height
depending on orientation of the whole panel.
:param `size`: the maximum size available for the L{FoldWindowItem};
:param `vertical`: ``True`` if the parent L{FoldPanelBar} is in vertical
mode.
"""
if self._flags & FPB_ALIGN_WIDTH:
# align by taking full width
mySize = size - self._leftSpacing - self._rightSpacing
if mySize < 0:
mySize = 10 # can't have negative width
if self._type == "SEPARATOR":
self._lineLength = mySize
else:
xsize = (vertical and [mySize] or [-1])[0]
ysize = (vertical and [-1] or [mySize])[0]
self._wnd.SetSize((xsize, ysize))
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