TKINTER SEARCH BOX

try:

    from Tkinter import Entry, Frame, Label, StringVar

    from Tkconstants import *

except ImportError:

    from tkinter import Entry, Frame, Label, StringVar

    from tkinter.constants import *

​

def hex2rgb(str_rgb):

    try:

        rgb = str_rgb[1:]

​

        if len(rgb) == 6:

            r, g, b = rgb[0:2], rgb[2:4], rgb[4:6]

        elif len(rgb) == 3:

            r, g, b = rgb[0] * 2, rgb[1] * 2, rgb[2] * 2

        else:

            raise ValueError()

    except:

        raise ValueError("Invalid value %r provided for rgb color."% str_rgb)

​

    return tuple(int(v, 16) for v in (r, g, b))

​

class Placeholder_State(object):

     __slots__ = 'normal_color', 'normal_font', 'placeholder_text', 'placeholder_color', 'placeholder_font', 'contains_placeholder'

​

def add_placeholder_to(entry, placeholder, color="grey", font=None):

    normal_color = entry.cget("fg")

    normal_font = entry.cget("font")

    if font is None:

        font = normal_font

​

    state = Placeholder_State()

    state.normal_color=normal_color

    state.normal_font=normal_font

    state.placeholder_color=color

    state.placeholder_font=font

    state.placeholder_text = placeholder

    state.contains_placeholder=True

​

    def on_focusin(event, entry=entry, state=state):

        if state.contains_placeholder:

            entry.delete(0, "end")

            entry.config(fg = state.normal_color, font=state.normal_font)

            state.contains_placeholder = False

​

    def on_focusout(event, entry=entry, state=state):

        if entry.get() == '':

            entry.insert(0, state.placeholder_text)

            entry.config(fg = state.placeholder_color, font=state.placeholder_font)

            state.contains_placeholder = True

​

    entry.insert(0, placeholder)

    entry.config(fg = color, font=font)

​

    entry.bind('<FocusIn>', on_focusin, add="+")

    entry.bind('<FocusOut>', on_focusout, add="+")

    entry.placeholder_state = state

​

    return state

​

class SearchBox(Frame):

    def __init__(self, master, entry_width=30, entry_font=None, entry_background="white", entry_highlightthickness=1, button_text="Search", button_ipadx=10, button_background="#009688", button_foreground="white", button_font=None, opacity=0.8, placeholder=None, placeholder_font=None, placeholder_color="grey", spacing=3, command=None):

        Frame.__init__(self, master)

        self._command = command

​

        self.entry = Entry(self, width=entry_width, background=entry_background, highlightcolor=button_background, highlightthickness=entry_highlightthickness)

        self.entry.pack(side=LEFT, fill=BOTH, ipady=1, padx=(0,spacing))

        if entry_font:

            self.entry.configure(font=entry_font)

​

        if placeholder:

            add_placeholder_to(self.entry, placeholder, color=placeholder_color, font=placeholder_font)

​

        self.entry.bind("<Escape>", lambda event: self.entry.nametowidget(".").focus())

        self.entry.bind("<Return>", self._on_execute_command)

​

        opacity = float(opacity)

​

        if button_background.startswith("#"):

            r,g,b = hex2rgb(button_background)

        else:

            # Color name

            r,g,b = master.winfo_rgb(button_background)

​

        r = int(opacity*r)

        g = int(opacity*g)

        b = int(opacity*b)

​

        if r <= 255 and g <= 255 and b <=255:

            self._button_activebackground = '#%02x%02x%02x' % (r,g,b)

        else:

            self._button_activebackground = '#%04x%04x%04x' % (r,g,b)

​

        self._button_background = button_background

​

        self.button_label = Label(self, text=button_text, background=button_background, foreground=button_foreground, font=button_font)

        if entry_font:

            self.button_label.configure(font=button_font)

        self.button_label.pack(side=LEFT, fill=Y, ipadx=button_ipadx)

        self.button_label.bind("<Enter>", self._state_active)

        self.button_label.bind("<Leave>", self._state_normal)

​

        self.button_label.bind("<ButtonRelease-1>", self._on_execute_command)

​

    def get_text(self):

        entry = self.entry

        if hasattr(entry, "placeholder_state"):

            if entry.placeholder_state.contains_placeholder:

                return ""

            else:

                return entry.get()

        else:

            return entry.get()

    def set_text(self, text):

        entry = self.entry

        if hasattr(entry, "placeholder_state"):

            entry.placeholder_state.contains_placeholder = False

​

        entry.delete(0, END)

        entry.insert(0, text)

    def clear(self):

        self.entry_var.set("")

    def focus(self):

        self.entry.focus()

​

    def _on_execute_command(self, event):

        text = self.get_text()

        self._command(text)

​

    def _state_normal(self, event):

        self.button_label.configure(background=self._button_background)

​

    def _state_active(self, event):

        self.button_label.configure(background=self._button_activebackground)

if __name__ == "__main__":

    try:

        from Tkinter import Tk

        from tkMessageBox import showinfo

    except ImportError:

        from tkinter import Tk

        from tkinter.messagebox import showinfo

​

    def command(text):

        showinfo("search command", "searching:%s"%text)

​

    root = Tk()

    SearchBox(root, command=command, placeholder="Type and press enter", entry_highlightthickness=0).pack(pady=6, padx=3)

​

    root.mainloop()

print "TKINTER SEARCH BOX opened SUCCESSFULLY"

​