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Don't scroll too far if the child getting the focus is large.

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27476 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn 2004-05-28 04:22:16 +00:00
parent a1d66aef6f
commit 68c0610dae
2 changed files with 56 additions and 37 deletions
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21
wxPython/demo/ScrolledPanel.py
View File

@ -28,24 +28,27 @@ class TestPanel(scrolled.ScrolledPanel):
words = text.split()
panel1 = scrolled.ScrolledPanel(self, -1, size=(120,300),
style = wx.TAB_TRAVERSAL|wx.SUNKEN_BORDER )
panel1 = scrolled.ScrolledPanel(self, -1, size=(140, 300),
style = wx.TAB_TRAVERSAL|wx.SUNKEN_BORDER, name="panel1" )
fgs1 = wx.FlexGridSizer(cols=2, vgap=4, hgap=4)
for word in words:
label = wx.StaticText(panel1, -1, word+":")
tc = wx.TextCtrl(panel1, -1, word, size=(50,-1))
fgs1.Add(label, flag=wx.ALIGN_RIGHT | wx.ALIGN_CENTER_VERTICAL)
fgs1.Add(tc, flag=wx.EXPAND|wx.RIGHT, border=25)
if word == "three":
tc = wx.TextCtrl(panel1, -1, word, size=(150,-1))
else:
tc = wx.TextCtrl(panel1, -1, word, size=(50,-1))
fgs1.Add(label, flag=wx.ALIGN_RIGHT | wx.ALIGN_CENTER_VERTICAL | wx.LEFT, border=10)
fgs1.Add(tc, flag=wx.RIGHT, border=10)
panel1.SetSizer( fgs1 )
panel1.SetAutoLayout(1)
panel1.SetupScrolling( scroll_x=False )
panel1.SetupScrolling()
panel2 = scrolled.ScrolledPanel(self, -1, size=(350, 40),
style = wx.TAB_TRAVERSAL|wx.SUNKEN_BORDER)
panel2 = scrolled.ScrolledPanel(self, -1, size=(350, 50),
style = wx.TAB_TRAVERSAL|wx.SUNKEN_BORDER, name="panel2")
panel3 = scrolled.ScrolledPanel(self, -1, size=(200,100),
style = wx.TAB_TRAVERSAL|wx.SUNKEN_BORDER)
style = wx.TAB_TRAVERSAL|wx.SUNKEN_BORDER, name="panel3")
fgs2 = wx.FlexGridSizer(cols=25, vgap=4, hgap=4)
fgs3 = wx.FlexGridSizer(cols=5, vgap=4, hgap=4)

72
wxPython/wx/lib/scrolledpanel.py
View File

@ -18,22 +18,27 @@
import wx
class ScrolledPanel( wx.ScrolledWindow ):
"""\
ScrolledPanel fills a "hole" in the implementation of wx.ScrolledWindow,
providing automatic scrollbar and scrolling behavior and the tab traversal
management that wxScrolledWindow lacks. This code was based on the original
demo code showing how to do this, but is now available for general use
as a proper class (and the demo is now converted to just use it.)
"""
def __init__(self, parent, id=-1,
pos = wx.DefaultPosition, size = wx.DefaultSize,
style = wx.TAB_TRAVERSAL, name = "scrolledpanel"):
class ScrolledPanel( wx.PyScrolledWindow ):
wx.ScrolledWindow.__init__(self, parent, -1,
pos=pos, size=size,
style=style, name=name)
""" ScrolledPanel fills a "hole" in the implementation of
wx.ScrolledWindow, providing automatic scrollbar and scrolling
behavior and the tab traversal management that wxScrolledWindow
lacks. This code was based on the original demo code showing how
to do this, but is now available for general use as a proper class
(and the demo is now converted to just use it.)
It is assumed that the ScrolledPanel will have a sizer, as it is
used to calculate the minimal virtual size of the panel and etc.
"""
def __init__(self, parent, id=-1, pos = wx.DefaultPosition,
size = wx.DefaultSize, style = wx.TAB_TRAVERSAL,
name = "scrolledpanel"):
wx.PyScrolledWindow.__init__(self, parent, -1,
pos=pos, size=size,
style=style, name=name)
self.SetBestSize(size)
self.Bind(wx.EVT_CHILD_FOCUS, self.OnChildFocus)
@ -74,30 +79,41 @@ as a proper class (and the demo is now converted to just use it.)
sppu_x, sppu_y = self.GetScrollPixelsPerUnit()
vs_x, vs_y = self.GetViewStart()
cpos = child.GetPosition()
csz = child.GetSize()
cr = child.GetRect()
clntsz = self.GetClientSize()
new_vs_x, new_vs_y = -1, -1
# is it before the left edge?
if cpos.x < 0 and sppu_x > 0:
new_vs_x = vs_x + (cpos.x / sppu_x)
if cr.x < 0 and sppu_x > 0:
new_vs_x = vs_x + (cr.x / sppu_x)
# is it above the top?
if cpos.y < 0 and sppu_y > 0:
new_vs_y = vs_y + (cpos.y / sppu_y)
if cr.y < 0 and sppu_y > 0:
new_vs_y = vs_y + (cr.y / sppu_y)
clntsz = self.GetClientSize()
# For the right and bottom edges, scroll enough to show the
# whole control if possible, but if not just scroll such that
# the top/left edges are still visible
# is it past the right edge ?
if cpos.x + csz.width > clntsz.width and sppu_x > 0:
diff = (cpos.x + csz.width - clntsz.width) / sppu_x
new_vs_x = vs_x + diff + 1
if cr.right > clntsz.width and sppu_x > 0:
diff = (cr.right - clntsz.width) / sppu_x
if cr.x - diff * sppu_x > 0:
new_vs_x = vs_x + diff + 1
else:
new_vs_x = vs_x + (cr.x / sppu_x)
# is it below the bottom ?
if cpos.y + csz.height > clntsz.height and sppu_y > 0:
diff = (cpos.y + csz.height - clntsz.height) / sppu_y
new_vs_y = vs_y + diff + 1
if cr.bottom > clntsz.height and sppu_y > 0:
diff = (cr.bottom - clntsz.height) / sppu_y
if cr.y - diff * sppu_y > 0:
new_vs_y = vs_y + diff + 1
else:
new_vs_y = vs_y + (cr.y / sppu_y)
# if we need to adjust
if new_vs_x != -1 or new_vs_y != -1:
#print "%s: (%s, %s)" % (self.GetName(), new_vs_x, new_vs_y)
self.Scroll(new_vs_x, new_vs_y)