BallUp/Test at main · GAMinsect/BallUp · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
import sys
import os
import zipfile
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from gi.repository import Gdk
import getopt
from gi.repository import Pango

page = 0
PAGE_SIZE = 45

class ReadEtexts():

    def keypress_cb(self, widget, event):
        "Respond when the user presses one of the arrow keys"
        keyname = Gdk.keyval_name(event.keyval)
        if keyname == 'plus':
            self.font_increase()
            return True
        if keyname == 'minus':
            self.font_decrease()
            return True
        if keyname == 'Page_Up' :
            self.page_previous()
            return True
        if keyname == 'Page_Down':
            self.page_next()
            return True
        if keyname == 'Up' or keyname == 'KP_Up' \
                or keyname == 'KP_Left':
            self.scroll_up()
            return True
        if keyname == 'Down' or keyname == 'KP_Down' \
                or keyname == 'KP_Right':
            self.scroll_down()
            return True
        return False

    def page_previous(self):
        global page
        page=page-1
        if page < 0: page=0
        self.show_page(page)
        v_adjustment = self.scrolled_window.get_vadjustment()
        v_adjustment.set_value(v_adjustment.get_upper() - v_adjustment.get_page_size())

    def page_next(self):
        global page
        page=page+1
        if page >= len(self.page_index): page=0
        self.show_page(page)
        v_adjustment = self.scrolled_window.get_vadjustment()
        v_adjustment.set_value(v_adjustment.get_lower())

    def font_decrease(self):
        font_size = self.font_desc.get_size() / 1024
        font_size = font_size - 1
        if font_size < 1:
            font_size = 1
        self.font_desc.set_size(font_size * 1024)
        self.textview.modify_font(self.font_desc)

    def font_increase(self):
        font_size = self.font_desc.get_size() / 1024
        font_size = font_size + 1
        self.font_desc.set_size(font_size * 1024)
        self.textview.modify_font(self.font_desc)

    def scroll_down(self):
        v_adjustment = self.scrolled_window.get_vadjustment()
        if v_adjustment.get_value() == v_adjustment.get_upper() - \
                v_adjustment.get_page_size():
            self.page_next()
            return
        if v_adjustment.get_value() < v_adjustment.get_upper() - v_adjustment.get_page_size():
            new_value = v_adjustment.get_value() + v_adjustment.get_step_increment()
            if new_value > v_adjustment.get_upper() - v_adjustment.get_page_size():
                new_value = v_adjustment.get_upper() - v_adjustment.get_page_size()
            v_adjustment.set_value(new_value)

    def scroll_up(self):
        v_adjustment = self.scrolled_window.get_vadjustment()
        if v_adjustment.get_value() == v_adjustment.get_lower():
            self.page_previous()
            return
        if v_adjustment.get_value() > v_adjustment.get_lower():
            new_value = v_adjustment.get_value() - \
                v_adjustment.get_step_increment()
            if new_value < v_adjustment.get_lower():
                new_value = v_adjustment.get_lower()
            v_adjustment.set_value(new_value)

    def show_page(self, page_number):
        global PAGE_SIZE
        position = self.page_index[page_number]
        self.etext_file.seek(position)
        linecount = 0
        label_text = '\n\n\n'
        textbuffer = self.textview.get_buffer()
        while linecount < PAGE_SIZE:
            line = self.etext_file.readline()
            if not line:
                break
            # Convert bytes to string in Python 3
            if isinstance(line, bytes):
                label_text = label_text + line.decode('iso-8859-1')
            else:
                label_text = label_text + line
            linecount = linecount + 1
        label_text = label_text + '\n\n\n'
        textbuffer.set_text(label_text)
        self.textview.set_buffer(textbuffer)

    def save_extracted_file(self, zipfile, filename):
        "Extract the file to a temp directory for viewing"
        filebytes = zipfile.read(filename)
        f = open("/tmp/" + filename, 'wb')  # Binary mode for writing bytes
        try:
            f.write(filebytes)
        finally:
            f.close()

    def read_file(self, filename):
        "Read the Etext file"
        global PAGE_SIZE

        if zipfile.is_zipfile(filename):
            self.zf = zipfile.ZipFile(filename, 'r')
            self.book_files = self.zf.namelist()
            self.save_extracted_file(self.zf, self.book_files[0])
            currentFileName = "/tmp/" + self.book_files[0]
        else:
            currentFileName = filename

        self.etext_file = open(currentFileName, "rb")  # Binary mode for reading bytes
        self.page_index = [ 0 ]
        linecount = 0
        while self.etext_file:
            line = self.etext_file.readline()
            if not line:
                break
            linecount = linecount + 1
            if linecount >= PAGE_SIZE:
                position = self.etext_file.tell()
                self.page_index.append(position)
                linecount = 0
        if filename.endswith(".zip"):
            os.remove(currentFileName)
        # Reset file pointer to beginning for reading
        self.etext_file.seek(0)

    def destroy_cb(self, widget, data=None):
        Gtk.main_quit()

    def main(self, file_path):
        self.window = Gtk.Window(Gtk.WindowType.TOPLEVEL)
        self.window.connect("destroy", self.destroy_cb)
        self.window.set_title("Read Etexts")
        self.window.set_size_request(640, 480)
        self.window.set_border_width(0)
        self.read_file(file_path)
        self.scrolled_window = Gtk.ScrolledWindow()
        self.textview = Gtk.TextView()
        self.textview.set_editable(False)
        self.textview.set_left_margin(50)
        self.textview.set_cursor_visible(False)
        self.textview.connect("key_press_event", self.keypress_cb)
        self.font_desc = Pango.FontDescription("sans 12")
        self.textview.modify_font(self.font_desc)
        self.show_page(0)
        self.scrolled_window.add(self.textview)
        self.window.add(self.scrolled_window)
        self.textview.show()
        self.scrolled_window.show()
        self.window.show()
        Gtk.main()

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("Usage: %s <file>" % (sys.argv[0]))
        sys.exit(1)
    try:
        opts, args = getopt.getopt(sys.argv[1:], "")
        ReadEtexts().main(args[0])
    except getopt.error as msg:
        print(msg)
        print("This program has no options")
        sys.exit(2)