def _draw_gradient(self, dc, rect):
""" Draw a vertical gradient background, using the background colour as a starting point
"""
if rect.height < 1 or rect.width < 1:
return
dc.SetPen(wx.TRANSPARENT_PEN)
# calculate gradient coefficients
bck_col = wxcol_to_frgb(self.Parent.GetBackgroundColour())
if self._mouse_hovering:
col1 = change_brightness(bck_col, 0.15)
col2 = change_brightness(bck_col, 0.10)
else:
col1 = change_brightness(bck_col, 0.10)
col2 = bck_col
r1, g1, b1 = col1
r2, g2, b2 = col2
rstep = (r2 - r1) / rect.height
gstep = (g2 - g1) / rect.height
bstep = (b2 - b1) / rect.height
rf, gf, bf = col1
for y in range(rect.y, rect.y + rect.height):
cur_col = (rf * 255, gf * 255, bf * 255)
dc.SetBrush(wx.Brush(cur_col, wx.BRUSHSTYLE_SOLID))
dc.DrawRectangle(rect.x, rect.y + (y - rect.y), rect.width, rect.height)
rf = rf + rstep
gf = gf + gstep
bf = bf + bstep
def _draw_gradient(self, dc, rect):
""" Draw a vertical gradient background, using the background colour as a starting point
"""
if rect.height < 1 or rect.width < 1:
return
dc.SetPen(wx.TRANSPARENT_PEN)
# calculate gradient coefficients
bck_col = wxcol_to_frgb(self.Parent.GetBackgroundColour())
if self._mouse_hovering:
col1 = change_brightness(bck_col, 0.15)
col2 = change_brightness(bck_col, 0.10)
else:
col1 = change_brightness(bck_col, 0.10)
col2 = bck_col
r1, g1, b1 = col1
r2, g2, b2 = col2
rstep = (r2 - r1) / rect.height
gstep = (g2 - g1) / rect.height
bstep = (b2 - b1) / rect.height
rf, gf, bf = col1
for y in range(rect.y, rect.y + rect.height):
cur_col = (rf * 255, gf * 255, bf * 255)
dc.SetBrush(wx.Brush(cur_col, wx.BRUSHSTYLE_SOLID))
dc.DrawRectangle(rect.x, rect.y + (y - rect.y), rect.width,
rect.height)
rf = rf + rstep
gf = gf + gstep
bf = bf + bstep
def test_change_brightness(self):
# no change
col = (0.2, 0.5, 1.0, 0.8)
ncol = conversion.change_brightness(col, 0)
self.assertEqual(col, ncol)
# brighten
col = (0.2, 0.5, 1.0, 0.8)
ncol = conversion.change_brightness(col, 0.3)
self.assertTrue(all(n >= o for o, n in zip(col, ncol)))
# darken
col = (0.2, 0.5, 1.0)
ncol = conversion.change_brightness(col, -0.6)
self.assertTrue(all(n < o for o, n in zip(col, ncol)))
# full black
col = (0.2, 0.5, 1.0, 1.0)
ncol = conversion.change_brightness(col, -1)
self.assertTrue(ncol, (0, 0, 0, 1))
def test_change_brightness(self):
# no change
col = (0.2, 0.5, 1.0, 0.8)
ncol = conversion.change_brightness(col, 0)
self.assertEqual(col, ncol)
# brighten
col = (0.2, 0.5, 1.0, 0.8)
ncol = conversion.change_brightness(col, 0.3)
self.assertTrue(all(n >= o for o, n in zip(col, ncol)))
# darken
col = (0.2, 0.5, 1.0)
ncol = conversion.change_brightness(col, -0.6)
self.assertTrue(all(n < o for o, n in zip(col, ncol)))
# full black
col = (0.2, 0.5, 1.0, 1.0)
ncol = conversion.change_brightness(col, -1)
self.assertTrue(ncol, (0, 0, 0, 1))
def OnPaint(self, event=None):
""" This paint event handler draws the actual control """
dc = wx.BufferedPaintDC(self)
width, height = self.GetWidth(), self.GetHeight()
half_height = height // 2
bgc = self.Parent.GetBackgroundColour()
dc.SetBackground(wx.Brush(bgc, wx.BRUSHSTYLE_SOLID))
dc.Clear()
fgc = self.Parent.GetForegroundColour()
if not self.Enabled:
fgc = change_brightness(fgc, -0.5)
dc.SetPen(wx.Pen(fgc, 1))
# Main line
dc.DrawLine(self.half_h_width, half_height, width - self.half_h_width, half_height)
# ticks
steps = [v / 10 for v in range(1, 10)]
range_span = self.max_value - self.min_value
for s in steps:
v = (range_span * s) + self.min_value
pix_x = self._val_to_pixel(v) + self.half_h_width
dc.DrawLine(pix_x, half_height - 1,
pix_x, half_height + 2)
if self.Enabled:
dc.DrawBitmap(self.bitmap,
self.handlePos,
half_height - self.half_h_height,
True)
else:
dc.DrawBitmap(self.bitmap_dis,
self.handlePos,
half_height - self.half_h_height,
True)
event.Skip()
def OnPaint(self, event=None):
""" This paint event handler draws the actual control """
dc = wx.BufferedPaintDC(self)
width, height = self.GetWidth(), self.GetHeight()
half_height = height // 2
bgc = self.Parent.GetBackgroundColour()
dc.SetBackground(wx.Brush(bgc, wx.BRUSHSTYLE_SOLID))
dc.Clear()
fgc = self.Parent.GetForegroundColour()
if not self.Enabled:
fgc = change_brightness(fgc, -0.5)
dc.SetPen(wx.Pen(fgc, 1))
# Main line
dc.DrawLine(self.half_h_width, half_height, width - self.half_h_width, half_height)
# ticks
steps = [v / 10 for v in range(1, 10)]
range_span = self.max_value - self.min_value
for s in steps:
v = (range_span * s) + self.min_value
pix_x = self._val_to_pixel(v) + self.half_h_width
dc.DrawLine(pix_x, half_height - 1,
pix_x, half_height + 2)
if self.Enabled:
dc.DrawBitmap(self.bitmap,
self.handlePos,
half_height - self.half_h_height,
True)
else:
dc.DrawBitmap(self.bitmap_dis,
self.handlePos,
half_height - self.half_h_height,
True)
event.Skip()
