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# Copyright (C) 2016 Damon Lynch <damonlynch@gmail.com>

# This file is part of Rapid Photo Downloader.
#
# Rapid Photo Downloader is free software: you can redistribute it and/or
# modify it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Rapid Photo Downloader is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Rapid Photo Downloader.  If not,
# see <http://www.gnu.org/licenses/>.

__author__ = 'Damon Lynch'
__copyright__ = "Copyright 2016, Damon Lynch"

import math

from gettext import gettext as _

from PyQt5.QtCore import QSize
from PyQt5.QtGui import (QFont, QIcon, QFontMetrics, QGuiApplication)
from PyQt5.QtWidgets import (QPushButton, QSizePolicy)

from raphodo.rotatedpushbutton import FlatButton


class TopPushButton(QPushButton, FlatButton):
    def __init__(self, text, extra_top: int=0, parent=None) -> None:
        super().__init__(text, parent)
        self.setCheckable(True)
        self.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)

        font = self.font()  # type: QFont
        top_row_font_size = font.pointSize() + 8
        self.top_row_icon_size = top_row_font_size + 10
        font.setPointSize(top_row_font_size)
        self.setFont(font)

        font_height = QFontMetrics(font).height()
        padding_side = math.ceil(font_height / 3.5)
        padding_bottom = math.ceil(font_height / 5.6)
        padding_top = padding_bottom + extra_top

        padding = 'padding-left: {padding_side}px; padding-right: {padding_side}px; padding-top: ' \
                  '{padding_top}px; padding-bottom: {padding_bottom}px;'.format(
                    padding_top=padding_top, padding_side=padding_side,
                    padding_bottom=padding_bottom)
        self.setFlatStyle(self, darker_if_checked=False, padding=padding)

    def setIcon(self, icon: QIcon) -> None:
        super().setIcon(icon)
        self.setIconSize(QSize(self.top_row_icon_size, self.top_row_icon_size))


class DownloadButton(QPushButton):
    """
    Button used to initiate downloads
    """

    def __init__(self, text: str, parent=None) -> None:
        super().__init__(text, parent)

        self.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Maximum)
        # self.setFlat(True)

        font_height = QFontMetrics(self.font()).tightBoundingRect(_('Download 8 Photos and 10 '
                                                                    'Videos')).height()
        padding = math.ceil(font_height * 1.7)
        height = font_height // 2 * 6
        radius = height // 2

        palette = QGuiApplication.palette()
        primaryColor = palette.highlight().color()
        borderColor = primaryColor.darker(105)
        hoverColor = palette.highlight().color().darker(106)
        hoverBorderColor = hoverColor.darker(105)
        primaryTextColor = palette.highlightedText().color()

        disabledColor = palette.window().color().darker(120)
        disabledBorderColor = disabledColor.darker(105)
        disabledTextColor = palette.highlightedText().color()


        # outline:none is used to remove the rectangle that appears on a
        # button when the button has focus
        # http://stackoverflow.com/questions/17280056/qt-css-decoration-on-focus
        self.setStyleSheet("""
        QPushButton {
        background-color: %(color)s;
        outline: none;
        padding-left: %(padding)dpx;
        padding-right: %(padding)dpx;
        border-radius: %(radius)dpx;
        border: 1px solid %(borderColor)s;
        height: %(height)dpx;
        color: %(textcolor)s;
        }
        QPushButton:hover {
        background-color: %(hoverColor)s;
        border: 1px solid %(hoverBorderColor)s;
        }
        QPushButton:disabled {
        background-color: %(disabledColor)s;
        color: %(disabledTextColor)s;
        border: 1px solid %(disabledBorderColor)s;
        }
        """ % dict(color=primaryColor.name(),
                   padding=padding,
                   borderColor=borderColor.name(),
                   hoverColor=hoverColor.name(),
                   hoverBorderColor=hoverBorderColor.name(),
                   height=height,
                   radius=radius,
                   textcolor=primaryTextColor.name(),
                   disabledColor=disabledColor.name(),
                   disabledTextColor=disabledTextColor.name(),
                   disabledBorderColor=disabledBorderColor.name()
                   ))