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Change font size on pinch

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This commit is contained in:
Kovid Goyal 2016-09-28 10:02:37 +05:30
parent 953f83b419
commit 9abce0664d
3 changed files with 15 additions and 0 deletions
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2
src/pyj/read_book/iframe.pyj
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@ -120,6 +120,8 @@ class IframeBoss:
def handle_gesture(self, gesture): def handle_gesture(self, gesture):
if gesture.type is 'show-chrome': if gesture.type is 'show-chrome':
self.send_message('show_chrome') self.send_message('show_chrome')
elif gesture.type is 'pinch':
self.send_message('bump_font_size', increase=gesture.direction is 'out')
else: else:
self._handle_gesture(gesture) self._handle_gesture(gesture)

7
src/pyj/read_book/prefs/font_size.pyj
View File

@ -34,6 +34,13 @@ def set_custom_size(ev):
sz = int(element(CONTAINER, 'input').value) sz = int(element(CONTAINER, 'input').value)
change_font_size(sz) change_font_size(sz)
def change_font_size_by(amt):
sd = get_session_data()
sz = sd.get('base_font_size')
nsz = sz + amt
nsz = max(8, min(nsz, 40))
change_font_size(nsz)
def show_custom_size(ev): def show_custom_size(ev):
c = element(CONTAINER) c = element(CONTAINER)
for child in c.childNodes: for child in c.childNodes:

6
src/pyj/read_book/view.pyj
View File

@ -10,6 +10,7 @@ from read_book.globals import messenger, iframe_id
from read_book.resources import load_resources from read_book.resources import load_resources
from read_book.overlay import Overlay from read_book.overlay import Overlay
from read_book.prefs.colors import resolve_color_scheme from read_book.prefs.colors import resolve_color_scheme
from read_book.prefs.font_size import change_font_size_by
from read_book.touch import set_left_margin_handler, set_right_margin_handler from read_book.touch import set_left_margin_handler, set_right_margin_handler
from book_list.theme import get_color from book_list.theme import get_color
from utils import parse_url_params, username_key from utils import parse_url_params, username_key
@ -83,6 +84,7 @@ class View:
'update_cfi': self.on_update_cfi, 'update_cfi': self.on_update_cfi,
'content_loaded': self.on_content_loaded, 'content_loaded': self.on_content_loaded,
'show_chrome': self.show_chrome, 'show_chrome': self.show_chrome,
'bump_font_size': self.bump_font_size,
} }
self.currently_showing = {} self.currently_showing = {}
@ -108,6 +110,10 @@ class View:
def forward_gesture(self, gesture): def forward_gesture(self, gesture):
self.send_message('gesture_from_margin', gesture=gesture) self.send_message('gesture_from_margin', gesture=gesture)
def bump_font_size(self, data):
delta = 2 if data.increase else -2
change_font_size_by(delta)
def show_chrome(self): def show_chrome(self):
self.overlay.show() self.overlay.show()