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# -*- coding: utf-8 -*-
from gettext import gettext as _
import gtk
import gobject
from sugar.graphics import style
from sugar.graphics.palette import ToolInvoker
from sugar.graphics.colorbutton import _ColorButton
class BrushButton(_ColorButton):
"""This is a ColorButton but show the color, the size and the shape
of the brush.
Instead of a color selector dialog it will pop up a Sugar palette.
As a preview an DrawingArea is used, to use the same methods to
draw than in the main window.
"""
__gtype_name__ = 'BrushButton'
def __init__(self, **kwargs):
self._title = _('Choose brush properties')
self._color = gtk.gdk.Color(0, 0, 0)
self._has_palette = True
self._has_invoker = True
self._palette = None
self._accept_drag = True
self._brush_size = 2
self._stamp_size = 20
self._brush_shape = 'circle'
self._resized_stamp = None
self._preview = gtk.DrawingArea()
self._preview.set_size_request(style.STANDARD_ICON_SIZE,
style.STANDARD_ICON_SIZE)
gobject.GObject.__init__(self, **kwargs)
self._preview.set_events(gtk.gdk.BUTTON_PRESS_MASK)
self._preview.connect('button_press_event', self.__mouse_down_cb)
self._preview.connect("expose_event", self.expose)
self.set_image(self._preview)
self._gc = None
if self._has_palette and self._has_invoker:
self._invoker = WidgetInvoker(self)
# FIXME: This is a hack.
self._invoker.has_rectangle_gap = lambda: False
self._invoker.palette = self._palette
def _setup(self):
if self.get_window() is not None:
self._preview.fill_color = ''
self._preview.show()
self.pixmap = gtk.gdk.Pixmap(self.get_window(),
style.STANDARD_ICON_SIZE,
style.STANDARD_ICON_SIZE, -1)
self._gc = self.get_window().new_gc()
self.show_all()
def get_brush_size(self):
return self._brush_size
def set_brush_size(self, brush_size):
self._brush_size = brush_size
self._preview.queue_draw()
brush_size = gobject.property(type=int, getter=get_brush_size,
setter=set_brush_size)
def get_brush_shape(self):
return self._brush_shape
def set_brush_shape(self, brush_shape):
self._brush_shape = brush_shape
self._preview.queue_draw()
brush_shape = gobject.property(type=str, getter=get_brush_shape,
setter=set_brush_shape)
def set_color(self, color):
# receive gtk.gdk.Color
self._color = color
self._preview.queue_draw()
def get_stamp_size(self):
return self._stamp_size
def set_stamp_size(self, stamp_size):
self._stamp_size = stamp_size
self._preview.queue_draw()
stamp_size = gobject.property(type=int, getter=get_stamp_size,
setter=set_stamp_size)
def set_resized_stamp(self, resized_stamp):
self._resized_stamp = resized_stamp
def stop_stamping(self):
self._resized_stamp = None
self._preview.queue_draw()
def is_stamping(self):
return self._resized_stamp != None
def expose(self, widget, event):
if self._gc is None:
self._setup()
if self.get_window() is not None:
center = style.STANDARD_ICON_SIZE / 2
self.pixmap.draw_rectangle(self._preview.get_style().white_gc,
True, 0, 0, style.STANDARD_ICON_SIZE, style.STANDARD_ICON_SIZE)
self._gc.set_foreground(self._color)
if self.is_stamping():
width = self._resized_stamp.get_width()
height = self._resized_stamp.get_height()
dx = center - width / 2
dy = center - height / 2
self.pixmap.draw_pixbuf(self._gc, self._resized_stamp,
0, 0, dx, dy, width, height)
else:
if self._brush_shape == 'circle':
self.pixmap.draw_arc(self._gc, True,
center - self._brush_size / 2,
center - self._brush_size / 2,
self._brush_size, self._brush_size, 0, 360 * 64)
elif self._brush_shape == 'square':
self.pixmap.draw_rectangle(self._gc, True,
center - self._brush_size / 2,
center - self._brush_size / 2,
self._brush_size, self._brush_size)
area = event.area
widget.window.draw_drawable(self._gc, self.pixmap,
area[0], area[1], area[0], area[1], area[2], area[3])
return False
def do_style_set(self, previous_style):
pass
def set_icon_name(self, icon_name):
pass
def get_icon_name(self):
pass
def set_icon_size(self, icon_size):
pass
def get_icon_size(self):
pass
def __mouse_down_cb(self, event):
if self._palette:
if not self._palette.is_up():
self._palette.popup(immediate=True,
state=self._palette.SECONDARY)
else:
self._palette.popdown(immediate=True)
return True
class ButtonStrokeColor(gtk.ToolItem):
"""Class to manage the Stroke Color of a Button"""
__gtype_name__ = 'BrushColorToolButton'
__gsignals__ = {'color-set': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
tuple())}
def __init__(self, activity, **kwargs):
self._activity = activity
self.properties = self._activity.area.tool
self._accelerator = None
self._tooltip = None
self._palette_invoker = ToolInvoker()
self._palette = None
gobject.GObject.__init__(self, **kwargs)
# The gtk.ToolButton has already added a normal button.
# Replace it with a ColorButton
self.color_button = BrushButton(has_invoker=False)
self.add(self.color_button)
self.color_button.set_brush_size(2)
self.color_button.set_brush_shape('circle')
self.color_button.set_stamp_size(20)
# The following is so that the behaviour on the toolbar is correct.
self.color_button.set_relief(gtk.RELIEF_NONE)
self._palette_invoker.attach_tool(self)
# This widget just proxies the following properties to the colorbutton
self.color_button.connect('notify::color', self.__notify_change)
self.color_button.connect('notify::icon-name', self.__notify_change)
self.color_button.connect('notify::icon-size', self.__notify_change)
self.color_button.connect('notify::title', self.__notify_change)
self.color_button.connect('can-activate-accel',
self.__button_can_activate_accel_cb)
self.create_palette()
def __button_can_activate_accel_cb(self, button, signal_id):
# Accept activation via accelerators regardless of this widget's state
return True
def __notify_change(self, widget, pspec):
new_color = self.alloc_color(self.get_color())
self.color_button.set_color(new_color)
self.notify(pspec.name)
def _color_button_cb(self, widget, pspec):
color = self.get_color()
self.set_stroke_color(color)
def alloc_color(self, color):
colormap = self._activity.area.get_colormap()
return colormap.alloc_color(color.red, color.green, color.blue)
def create_palette(self):
self._palette = self.get_child().create_palette()
color_palette_hbox = self._palette._picker_hbox
content_box = gtk.VBox()
self.size_spinbutton = gtk.SpinButton()
# This is where we set restrictions for size:
# Initial value, minimum value, maximum value, step
adj = gtk.Adjustment(self.properties['line size'], 1.0, 100.0, 1.0)
self.size_spinbutton.set_adjustment(adj)
self.size_spinbutton.set_numeric(True)
label = gtk.Label(_('Size: '))
hbox_size = gtk.HBox()
self.vbox_brush_options = gtk.VBox()
content_box.pack_start(hbox_size)
content_box.pack_start(self.vbox_brush_options)
hbox_size.pack_start(label)
hbox_size.pack_start(self.size_spinbutton)
self.size_spinbutton.connect('value-changed', self._on_value_changed)
# User is able to choose Shapes for 'Brush' and 'Eraser'
item1 = gtk.RadioButton(None, _('Circle'))
item1.set_active(True)
image1 = gtk.Image()
pixbuf1 = gtk.gdk.pixbuf_new_from_file_at_size(
'./icons/tool-shape-ellipse.svg',
style.SMALL_ICON_SIZE,
style.SMALL_ICON_SIZE)
image1.set_from_pixbuf(pixbuf1)
item1.set_image(image1)
item2 = gtk.RadioButton(item1, _('Square'))
image2 = gtk.Image()
pixbuf2 = gtk.gdk.pixbuf_new_from_file_at_size(
'./icons/tool-shape-rectangle.svg',
style.SMALL_ICON_SIZE,
style.SMALL_ICON_SIZE)
image2.set_from_pixbuf(pixbuf2)
item2.set_image(image2)
item1.connect('toggled', self._on_toggled, self.properties, 'circle')
item2.connect('toggled', self._on_toggled, self.properties, 'square')
label = gtk.Label(_('Shape'))
self.vbox_brush_options.pack_start(label)
self.vbox_brush_options.pack_start(item1)
self.vbox_brush_options.pack_start(item2)
keep_aspect_checkbutton = gtk.CheckButton(_('Keep aspect'))
ratio = self._activity.area.keep_aspect_ratio
keep_aspect_checkbutton.set_active(ratio)
keep_aspect_checkbutton.connect('toggled',
self._keep_aspect_checkbutton_toggled)
self.vbox_brush_options.pack_start(keep_aspect_checkbutton)
color_palette_hbox.pack_start(gtk.VSeparator(),
padding=style.DEFAULT_SPACING)
color_palette_hbox.pack_start(content_box)
color_palette_hbox.show_all()
self._update_palette()
return self._palette
def _keep_aspect_checkbutton_toggled(self, checkbutton):
self._activity.area.keep_aspect_ratio = checkbutton.get_active()
def _update_palette(self):
palette_children = self._palette._picker_hbox.get_children()
if self.color_button.is_stamping():
# Hide palette color widgets:
for ch in palette_children[:4]:
ch.hide_all()
# Hide brush options:
self.vbox_brush_options.hide_all()
# Change title:
self.set_title(_('Stamp properties'))
else:
# Show palette color widgets:
for ch in palette_children[:4]:
ch.show_all()
# Show brush options:
self.vbox_brush_options.show_all()
# Change title:
self.set_title(_('Brush properties'))
self._palette._picker_hbox.resize_children()
self._palette._picker_hbox.queue_draw()
def update_stamping(self):
if self.color_button.is_stamping():
self.size_spinbutton.set_value(self.color_button.stamp_size)
else:
self.size_spinbutton.set_value(self.color_button.brush_size)
self._update_palette()
def _on_value_changed(self, spinbutton):
size = spinbutton.get_value_as_int()
if self.color_button.is_stamping():
self.properties['stamp size'] = size
resized_stamp = self._activity.area.resize_stamp(size)
self.color_button.set_resized_stamp(resized_stamp)
self.color_button.set_stamp_size(self.properties['stamp size'])
else:
self.properties['line size'] = size
self.color_button.set_brush_size(self.properties['line size'])
self._activity.area.set_tool(self.properties)
def _on_toggled(self, radiobutton, tool, shape):
if radiobutton.get_active():
self.properties['line shape'] = shape
self.color_button.set_brush_shape(shape)
self.color_button.set_brush_size(self.properties['line size'])
def get_palette_invoker(self):
return self._palette_invoker
def set_palette_invoker(self, palette_invoker):
self._palette_invoker.detach()
self._palette_invoker = palette_invoker
palette_invoker = gobject.property(
type=object, setter=set_palette_invoker, getter=get_palette_invoker)
def set_color(self, color):
self.color_button.set_color(color)
def get_color(self):
return self.get_child().props.color
color = gobject.property(type=object, getter=get_color, setter=set_color)
def set_title(self, title):
self.get_child().props.title = title
def get_title(self):
return self.get_child().props.title
title = gobject.property(type=str, getter=get_title, setter=set_title)
def do_expose_event(self, event):
child = self.get_child()
allocation = self.get_allocation()
if self._palette and self._palette.is_up():
invoker = self._palette.props.invoker
invoker.draw_rectangle(event, self._palette)
elif child.state == gtk.STATE_PRELIGHT:
child.style.paint_box(event.window, gtk.STATE_PRELIGHT,
gtk.SHADOW_NONE, event.area,
child, 'toolbutton-prelight',
allocation.x, allocation.y,
allocation.width, allocation.height)
gtk.ToolButton.do_expose_event(self, event)
|