author | Radek Brich <radek.brich@devl.cz> |
Wed, 03 Sep 2014 21:56:20 +0200 | |
changeset 113 | 6796adfdc7eb |
parent 112 | ce2e67e7bbb8 |
parent 107 | 1822c37b2688 |
child 114 | 26c02bd94bd9 |
permissions | -rw-r--r-- |
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from tuikit.core.coords import Point, Size, Rect |
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from tuikit.core.theme import default_theme |
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from tuikit.core.signal import Signal |
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import logging |
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class Widget: |
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"""Base class for all widgets.""" |
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_num_instances = 0 |
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def __init__(self): |
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self._num_instances += 1 |
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#: Widget name is used for logging etc. Not visible anywhere. |
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self.name = '%s#%s' % (self.__class__.__name__, self._num_instances) |
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#: Parent Widget |
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self.parent = None |
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#: Window owning this Widget |
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self.window = None |
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#: Theme |
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self.theme = default_theme |
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#: Position inside parent widget. Modified by layout manager. |
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self.pos = Point() |
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#: Actual size. Modified by layout manager. |
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self._size = Size(10, 10) |
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#: Requested size. Layout manager will use this when placing the widget. |
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self.sizereq = Size(1, 1) |
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#: Minimal size of widget. Widget will never be sized smaller than this. |
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self.sizemin = Size(1, 1) |
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#: Maximum size of widget. Widget will never be sized bigger than this. |
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#: None means no maximum size (infinite). |
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self.sizemax = Size(None, None) |
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#: Cursor is position where text input will occur. |
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#: The cursor coordinates are relative to widget. |
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self._cursor = Point() |
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#: Cursor is displayed on screen only when the widget is focused. |
112 | 44 |
self._cursor_visible = False |
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#: Hidden widget does not affect layout. |
105b1affc3c2
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self.hidden = False |
105b1affc3c2
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#: Allow keyboard focus for this widget. |
105b1affc3c2
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self.allow_focus = False |
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105b1affc3c2
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self.sig_keypress = Signal(allow_stop=True) |
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## position and size ## |
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@property |
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def x(self): |
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return self.pos.x |
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@property |
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def y(self): |
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return self.pos.y |
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@property |
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def width(self): |
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return self.size.w |
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@property |
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def height(self): |
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return self.size.h |
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@property |
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def size(self): |
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return self._size.immutable() |
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def resize(self, w, h): |
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self._size.update(w, h) |
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@property |
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def boundaries(self): |
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return Rect._make(self.pos, self._size) |
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## drawing, looks ## |
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def draw(self, buffer): |
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"""Draw self into buffer.""" |
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self.log.debug('Draw into %r at %s (exposed %s)', |
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buffer, buffer.origin, self.exposed(buffer)) |
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def set_theme(self, theme): |
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self.theme = theme |
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@staticmethod |
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def exposed(buffer): |
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"""Exposed part of widget. |
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Only this area needs to be drawn. |
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Returns exposed Rect in widget's local coordinates, |
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where 0,0 is left top corner of widget to be drawn. |
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""" |
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return buffer.clip_rect.moved(-buffer.origin.x, -buffer.origin.y) |
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@property |
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def cursor(self): |
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"""Return cursor coordinates. |
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Returns None if cursor is set outside of widget boundaries. |
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""" |
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if self._cursor in Rect._make((0, 0), self._size): |
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return self._cursor |
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@property |
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def cursor_visible(self): |
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return self._cursor_visible |
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111 | 118 |
## events ## |
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def resize_event(self, ev): |
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self.resize(ev.w, ev.h) |
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def keypress_event(self, ev): |
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"""Keypress event handler. |
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Override to accept keyboard input. |
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Returns True if event was consumed. |
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Call this implementation from inherited classes |
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if it does not consume the event. |
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""" |
111 | 134 |
if self.sig_keypress(ev): |
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return True |
111 | 136 |
self.log.debug('Not consumed: %s', ev) |
97
0c2e0c09ba5c
Add TextField widget, keypress event, cursor.
Radek Brich <radek.brich@devl.cz>
parents:
94
diff
changeset
|
137 |
|
106
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
138 |
def mousedown(self, button, pos): |
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
139 |
self._log.debug('mousedown(btn=%r, pos=%r)', |
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
140 |
button, pos) |
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
141 |
|
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
142 |
def mouseup(self, button, pos): |
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
143 |
self._log.debug('mouseup(btn=%r, pos=%r)', |
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
144 |
button, pos) |
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
145 |
|
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
146 |
def mousemove(self, button, pos, relpos): |
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
147 |
self._log.debug('mousemove(btn=%r, pos=%r, relpos=%r)', |
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
148 |
button, pos, relpos) |
abcadb7e2ef1
Use Point for mouse events, add them to Container and Widget.
Radek Brich <radek.brich@devl.cz>
parents:
105
diff
changeset
|
149 |
|
90
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
150 |
## timeouts ## |
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
151 |
|
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
152 |
def add_timeout(self, delay, callback, *args): |
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
153 |
"""Register `callback` to be called after `delay` seconds.""" |
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
154 |
self.parent.add_timeout(self, delay, callback, *args) |
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
155 |
|
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
156 |
def remove_timeout(self, callback, *args): |
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
157 |
"""Unregister callback previously registered with add_timeout. |
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
158 |
|
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
159 |
Removes all timeouts with the `callback` and `args`. |
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
160 |
|
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
161 |
""" |
781774a8d568
Add timer, adjust inheritance of Widget, Container, Window.
Radek Brich <radek.brich@devl.cz>
parents:
89
diff
changeset
|
162 |
self.parent.remove_timeout(self, callback, *args) |
109
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
163 |
|
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
164 |
## focus ## |
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
165 |
|
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
166 |
def can_focus(self): |
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
167 |
return not self.hidden and self.allow_focus |
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
168 |
|
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
169 |
def has_focus(self): |
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
170 |
if self.parent is None: |
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
171 |
return True |
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
172 |
return (self.parent.has_focus() |
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
173 |
and self.parent.focus_widget == self) |
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
174 |
|
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
175 |
## utilities ## |
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
176 |
|
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
177 |
@property |
105b1affc3c2
Update keypress propagation. Allow focus change by tab key. Add log property to Widget for smart logging.
Radek Brich <radek.brich@devl.cz>
parents:
97
diff
changeset
|
178 |
def log(self): |
113 | 179 |
"""Logger for widget debugging. |
180 |
||
181 |
Logger name contains full module name, class name and instance number. |
|
182 |
||
183 |
""" |
|
184 |
return logging.getLogger('%s.%s' % (self.__module__, self.name)) |