comictagger/comictaggerlib/pagebrowser.py

"""
A PyQT4 dialog to show pages of a comic archive
"""

"""
Copyright 2012-2014  Anthony Beville

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""

import platform
import sys
import os

from PyQt4 import QtCore, QtGui, uic

from settings import ComicTaggerSettings
from coverimagewidget import CoverImageWidget


class PageBrowserWindow(QtGui.QDialog):

    def __init__(self, parent, metadata):
        super(PageBrowserWindow, self).__init__(parent)

        uic.loadUi(ComicTaggerSettings.getUIFile('pagebrowser.ui'), self)

        self.pageWidget = CoverImageWidget(self.pageContainer, CoverImageWidget.ArchiveMode)
        gridlayout = QtGui.QGridLayout(self.pageContainer)
        gridlayout.addWidget(self.pageWidget)
        gridlayout.setContentsMargins(0,0,0,0)
        self.pageWidget.showControls = False

        self.setWindowFlags(self.windowFlags() |
                                      QtCore.Qt.WindowSystemMenuHint |
                                      QtCore.Qt.WindowMaximizeButtonHint)

        self.comic_archive = None
        self.page_count = 0
        self.current_page_num = 0
        self.metadata = metadata

        self.buttonBox.button(QtGui.QDialogButtonBox.Close).setDefault(True)
        if platform.system() == "Darwin":
            self.btnPrev.setText("<<")
            self.btnNext.setText(">>")
        else:
            self.btnPrev.setIcon(QtGui.QIcon(ComicTaggerSettings.getGraphic('left.png')))
            self.btnNext.setIcon(QtGui.QIcon(ComicTaggerSettings.getGraphic('right.png')))

        self.btnNext.clicked.connect(self.nextPage)
        self.btnPrev.clicked.connect(self.prevPage)
        self.show()

        self.btnNext.setEnabled(False)
        self.btnPrev.setEnabled(False)

    def reset(self):
        self.comic_archive = None
        self.page_count = 0
        self.current_page_num = 0
        self.metadata = None

        self.btnNext.setEnabled(False)
        self.btnPrev.setEnabled(False)
        self.pageWidget.clear()

    def setComicArchive(self, ca):

        self.comic_archive = ca
        self.page_count = ca.getNumberOfPages()
        self.current_page_num = 0
        self.pageWidget.setArchive(self.comic_archive)
        self.setPage()

        if     self.page_count > 1:
            self.btnNext.setEnabled(True)
            self.btnPrev.setEnabled(True)

    def nextPage(self):

        if self.current_page_num + 1 < self.page_count:
            self.current_page_num += 1
        else:
            self.current_page_num = 0
        self.setPage()

    def prevPage(self):

        if self.current_page_num - 1 >= 0:
            self.current_page_num -= 1
        else:
            self.current_page_num = self.page_count - 1
        self.setPage()

    def setPage(self):
        if self.metadata is not None:
            archive_page_index = self.metadata.getArchivePageIndex(self.current_page_num)
        else:
            archive_page_index =  self.current_page_num

        self.pageWidget.setPage(archive_page_index)
        self.setWindowTitle("Page Browser - Page {0} (of {1}) ".format(self.current_page_num+1, self.page_count))