def _draw(self, color):
"""Draw the gradient and the selection cross on the canvas."""
width = self.winfo_width()
height = self.winfo_height()
self.delete("bg")
self.delete("cross_h")
self.delete("cross_v")
del self.bg
self.bg = tk.PhotoImage(width=width, height=height, master=self)
self._fill()
self.create_image(0, 0, image=self.bg, anchor="nw", tags="bg")
self.tag_lower("bg")
h, s, v = color
x = v / 100.
y = (1 - s / 100.)
self.create_line(0,
y * height,
width,
y * height,
tags="cross_h",
fill="#C2C2C2")
self.create_line(x * width,
0,
x * width,
height,
tags="cross_v",
fill="#C2C2C2")
def __init__(self,
parent,
hue,
color=None,
cr=COLORCOR_MAX,
cg=int(69 * COLORCOR_MAX / 100),
cb=int(94 * COLORCOR_MAX / 100),
height=256,
width=256,
**kwargs):
"""
Create a ColorSquare.
Keyword arguments:
* parent: parent window
* hue: color square gradient for given hue (color in top right corner
is (hue, 100, 100) in HSV
* color: initially selected color given in HSV
* width, height and any keyword option accepted by a tkinter Canvas
"""
tk.Canvas.__init__(self, parent, height=height, width=width, **kwargs)
self.bg = tk.PhotoImage(width=width, height=height, master=self)
self._hue = hue
if not color:
color = hue2col(self._hue)
self.cr = cr
self.cg = cg
self.cb = cb
self.bind('<Configure>', lambda e: self._draw(color))
self.bind('<ButtonPress-1>', self._on_click)
self.bind('<B1-Motion>', self._on_move)
def _draw_gradient(self, hue):
"""Draw the gradient and put the cursor on hue."""
self.delete("gradient")
self.delete("cursor")
del self.gradient
width = self.winfo_width()
height = self.winfo_height()
self.gradient = tk.PhotoImage(master=self, width=width, height=height)
line = []
for i in range(width):
#line.append(rgb_to_hexa(*hue2col(float(i) / width * 360)))
gradval = round2(float(i) / width * 255)
line.append(rgb_to_hexa(gradval, gradval, gradval))
line = "{" + " ".join(line) + "}"
self.gradient.put(" ".join([line for j in range(height)]))
self.create_image(0,
0,
anchor="nw",
tags="gardient",
image=self.gradient)
self.lower("gradient")
x = hue / 100. * width
self.create_line(x, 0, x, height, width=2, tags='cursor')
def _draw(self, color):
"""Draw the gradient and the selection cross on the canvas."""
width = self.winfo_width()
height = self.winfo_height()
self.delete("bg")
self.delete("cross_h")
self.delete("cross_v")
del self.bg
self.bg = tk.PhotoImage(width=width, height=height, master=self)
self._fill()
self.create_image(0, 0, image=self.bg, anchor="nw", tags="bg")
self.tag_lower("bg")
h, s, v = color
h = self._correct_hue_for_disp(h)
radius = min(height, width) / 2.0
centre = height / 2, width / 2
radh = math.radians(h)
x = centre[1] - width * math.cos(radh) * s / 200
y = centre[0] - height * math.sin(radh) * s / 200
self.create_line(0, y, width, y, tags="cross_h", fill="#C2C2C2")
self.create_line(x, 0, x, height, tags="cross_v", fill="#C2C2C2")
def _draw_gradient(self, tempColor):
"""Draw the gradient and put the cursor on tempColor."""
self.delete("gradient")
self.delete("cursor")
del self.gradient
width = self.winfo_width()
height = self.winfo_height()
self.gradient = tk.PhotoImage(master=self, width=width, height=height)
line = []
for i in range(width):
line.append(
rgb_to_hexa(*self.calcColor(int(i / width * 9000) + 1500)))
line = "{" + " ".join(line) + "}"
self.gradient.put(" ".join([line for j in range(height)]))
self.create_image(0,
0,
anchor="nw",
tags="gardient",
image=self.gradient)
self.lower("gradient")
x = tempColor / 5200. * width
self.create_line(x, 0, x, height, width=2, tags='cursor')
def _draw_gradient(self, value):
"""Draw the gradient and put the cursor on hue."""
self.delete("gradient")
self.delete("cursor")
del self.gradient
width = self.winfo_width()
height = self.winfo_height()
self.gradient = tk.PhotoImage(master=self, width=width, height=height)
line = []
for i in range(width):
col = int(float(i) / width * 255)
rij = col
gij = col
bij = col
line.append(rgb_to_hexa(rij, gij, bij))
line = "{" + " ".join(line) + "}"
self.gradient.put(" ".join([line for j in range(height)]))
self.create_image(0,
0,
anchor="nw",
tags="gradient",
image=self.gradient)
self.lower("gradient")
x = value / max_value * width
self.create_line(x, 0, x, height, width=4, tags='cursor', fill="RED")
def __init__(self,
parent,
tempColor=4000,
height=11,
width=500,
variable=None,
**kwargs):
"""
Create a TemperatureGradBar.
Keyword arguments:
* parent: parent window
* tempColor: initially selected tempColor value
* variable: IntVar linked to the alpha value
* height, width, and any keyword argument accepted by a tkinter Canvas
"""
tk.Canvas.__init__(self, parent, width=width, height=height, **kwargs)
self._variable = variable
if variable is not None:
try:
tempColor = int(variable.get())
except Exception:
pass
else:
self._variable = tk.IntVar(self)
tempColor -= 1500
if tempColor > 5200:
tempColor = 5200
elif tempColor < 1500:
tempColor = 1500
try:
self._variable.trace_add("write", self._update_temperature)
except Exception:
self._variable.trace("w", self._update_temperature)
self.gradient = tk.PhotoImage(master=self, width=width, height=height)
self.bind('<Configure>', lambda e: self._draw_gradient(tempColor))
self.bind('<ButtonPress-1>', self._on_click)
self.bind('<B1-Motion>', self._on_move)
def __init__(self,
parent,
hue=0,
value=0,
height=11,
width=256,
variable=None,
**kwargs):
"""
Create a GradientBar.
Keyword arguments:
* parent: parent window
* hue: initially selected hue value
* variable: IntVar linked to the alpha value
* height, width, and any keyword argument accepted by a tkinter Canvas
"""
tk.Canvas.__init__(self, parent, width=width, height=height, **kwargs)
self._variable = variable
if variable is not None:
try:
hue = int(variable.get())
except Exception:
pass
else:
self._variable = tk.IntVar(self)
if hue > 360:
hue = 360
elif hue < 0:
hue = 0
self._variable.set(hue)
try:
self._variable.trace_add("write", self._update_hue)
except Exception:
self._variable.trace("w", self._update_hue)
self.gradient = tk.PhotoImage(master=self, width=width, height=height)
self.bind('<Configure>', lambda e: self._draw_gradient(hue))
self.bind('<ButtonPress-1>', self._on_click)
self.bind('<B1-Motion>', self._on_move)
def __init__(self,
parent,
alpha=255,
color=(255, 0, 0),
height=11,
width=256,
variable=None,
**kwargs):
"""
Create a bar to select the alpha value.
Keyword arguments:
* parent: parent window
* alpha: initially selected alpha value
* color: gradient color
* variable: IntVar linked to the alpha value
* height, width, and any keyword argument accepted by a tkinter Canvas
"""
tk.Canvas.__init__(self, parent, width=width, height=height, **kwargs)
self.gradient = tk.PhotoImage(master=self, width=width, height=height)
self._variable = variable
if variable is not None:
try:
alpha = int(variable.get())
except Exception:
pass
else:
self._variable = tk.IntVar(self)
if alpha > 255:
alpha = 255
elif alpha < 0:
alpha = 0
self._variable.set(alpha)
try:
self._variable.trace_add("write", self._update_alpha)
except Exception:
self._variable.trace("w", self._update_alpha)
self.bind('<Configure>', lambda e: self._draw_gradient(alpha, color))
self.bind('<ButtonPress-1>', self._on_click)
self.bind('<B1-Motion>', self._on_move)
