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# -*- coding: utf-8 -*-
# This file is part of emesene.
#
# Emesene is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# emesene is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with emesene; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import gtk
import cairo
try:
import Theme
import Config
except:
Theme = None
WIDTH=64
HEIGHT=64
class ImageAreaSelectorDialog(gtk.Dialog):
def __init__(self, pixbuf, title = "Select area of image", parent = None):
gtk.Dialog.__init__(self, title, parent,
gtk.DIALOG_DESTROY_WITH_PARENT,
(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
gtk.STOCK_OK, gtk.RESPONSE_OK ))
self.set_default_response(gtk.RESPONSE_CANCEL)
self.set_resizable(False)
self.selector = ImageAreaSelector()
self.selector.set_from_pixbuf(pixbuf)
bbox = gtk.HButtonBox()
self.button_rcw = gtk.Button(label="Rotate")
self.button_rcw.connect("clicked", self._on_rcw_clicked)
self.button_rccw = gtk.Button(label="Rotate")
self.button_rccw.connect("clicked", self._on_rccw_clicked)
if Theme:
theme = Theme.Theme(Config.Config()) # FIXME ARRGH
image_90 = gtk.Image()
image_90.set_from_pixbuf(theme.getImage("rotate-90"))
self.button_rcw.set_image(image_90)
image_270 = gtk.Image()
image_270.set_from_pixbuf(theme.getImage("rotate-270"))
self.button_rccw.set_image(image_270)
if gtk.gtk_version >= (2, 10, 0):
bbox.pack_start(self.button_rccw)
bbox.pack_end(self.button_rcw)
self.vbox.pack_start(self.selector)
self.vbox.pack_end(bbox)
self.vbox.show_all()
def run(self):
response = gtk.Dialog.run(self)
if response == gtk.RESPONSE_OK:
pixbuf = self.selector.get_selected()
self.destroy()
return (response, pixbuf)
else:
self.destroy()
return (gtk.RESPONSE_CANCEL, None)
def _on_rcw_clicked(self, *args):
self.selector.rotate(1)
def _on_rccw_clicked(self, *args):
self.selector.rotate(-1)
class ImageAreaSelector(gtk.DrawingArea):
__gtype_name__ = "ImageAreaSelector"
def __init__(self):
gtk.DrawingArea.__init__(self)
self.connect("expose_event", self.expose)
self.image = None
self.pixbuf = None
self.connect("button_press_event", self.button_press)
self.connect("button_release_event", self.button_release)
self.connect("motion_notify_event", self.motion_notify)
self.connect("configure_event", self.configure_event)
self.add_events(gtk.gdk.BUTTON_PRESS_MASK |
gtk.gdk.BUTTON_RELEASE_MASK |
gtk.gdk.POINTER_MOTION_MASK)
self._pressed = False
self._moved = False
self._state = gtk.gdk.LEFT_PTR
self._has_overlay = False
self._angle = 0
def get_selected(self):
if gtk.gtk_version >= (2, 10, 0):
angle = self.get_angle()
self._trans_pixbuf = self._trans_pixbuf.rotate_simple(angle)
return self._trans_pixbuf.subpixbuf(*self.selection)
def _get_selection(self):
return (self._x, self._y, self._width, self._height)
def _set_selection(self, (x, y, width, height)):
self._x = x
self._y = y
self._width = width
self._height = height
self.redraw_canvas()
selection = property(_get_selection, _set_selection)
def _get_sel_coord(self):
x1 = self._x
y1 = self._y
x2 = x1 + self._width
y2 = y1 + self._height
return (x1, y1, x2, y2)
def _set_sel_coord(self, x1, y1, x2, y2):
if x1 < 0 or y1 < 0 or x2 > self.pixbuf.get_width() \
or y2 > self.pixbuf.get_height():
return
if x1 > x2:
x2 = x1
if y1 > y2:
y2 = y1
self.selection = map(int, (x1, y1, x2-x1, y2-y1))
def reset_selection(self):
self.selection = (0,0,0,0)
def button_release(self, *args):
self._pressed = False
if not self._moved and self._state == gtk.gdk.LEFT_PTR:
self.reset_selection()
def expose(self, widget, event):
if not self._has_overlay:
self.create_overlay()
x , y, width, height = event.area
widget.window.draw_drawable(widget.get_style().fg_gc[gtk.STATE_NORMAL],
self.pixmap_shaded, 0, 0,
0, 0,
self.pixbuf.get_width(),
self.pixbuf.get_height())
widget.window.draw_pixbuf(None, pixbuf=self.pixbuf,
src_x=self._x,
src_y=self._y,
dest_x= self._x,
dest_y=self._y ,
width=self._width, height=self._height,
dither=gtk.gdk.RGB_DITHER_NORMAL,
x_dither=0, y_dither=0)
return False
def rotate(self, angle):
self._angle = (self._angle + angle) % 4
angle = self.get_angle()
self._init_pixbuf(angle, False)
def get_angle(self):
if not gtk.gtk_version >= (2, 10, 0):
return 0
if self._angle == 1:
angle = gtk.gdk.PIXBUF_ROTATE_CLOCKWISE
elif self._angle == 2:
angle = 180
elif self._angle == 3:
angle = gtk.gdk.PIXBUF_ROTATE_COUNTERCLOCKWISE
else:
angle = 0
return angle
def update_selection(self, event):
# track mouse delta
dx = event.x - self._mouse_x
dy = event.y - self._mouse_y
x1, y1, x2, y2 = self._get_sel_coord()
if self._state == gtk.gdk.TOP_LEFT_CORNER:
w = x2 - event.x
h = y2 - event.y
delta = max((w, h))
x1 = x2 - delta
y1 = y2 - delta
elif self._state == gtk.gdk.TOP_RIGHT_CORNER:
w = event.x - x1
h = y2 - event.y
delta = max((w, h))
x2 = x1 + delta
y1 = y2 - delta
elif self._state == gtk.gdk.BOTTOM_RIGHT_CORNER:
w = (event.x-x1)
h = (event.y-y1)
delta = max((w, h))
x2 = x1 + delta
y2 = y1 + delta
elif self._state == gtk.gdk.BOTTOM_LEFT_CORNER:
w = x2 - event.x
h = (event.y-y1)
delta = max((w, h))
x1 = x2 - delta
y2 = y1 + delta
elif self._state == gtk.gdk.FLEUR:
x1 += dx
y1 += dy
x2 += dx
y2 += dy
else:
# mouse pressed outside current selection. Create new selection
x1 = self._press_x
y1 = self._press_y
w = event.x - x1
h = event.y - y1
delta = max((w, h))
x2 = x1 + delta
y2 = y1 + delta
self._mouse_x = event.x
self._mouse_y = event.y
self._set_sel_coord(x1, y1, x2, y2)
def update_cursor(self, event):
fuzz = max((5, int(self._width * 0.05)))
if abs(event.y - self._y) < fuzz:
if abs(event.x -self._x) < fuzz:
self._state = gtk.gdk.TOP_LEFT_CORNER
elif abs(event.x - (self._x + self._width)) < fuzz:
self._state = gtk.gdk.TOP_RIGHT_CORNER
elif abs(event.y - (self._y + self._height)) < fuzz:
if abs(event.x - self._x) < fuzz:
self._state = gtk.gdk.BOTTOM_LEFT_CORNER
elif abs(event.x -(self._x + self._width)) < fuzz:
self._state = gtk.gdk.BOTTOM_RIGHT_CORNER
elif event.x > self._x and event.x < self._x + self._width \
and event.y > self._y and event.y < self._y + self._height:
self._state = gtk.gdk.FLEUR
else:
self._state = gtk.gdk.LEFT_PTR
self.window.set_cursor(gtk.gdk.Cursor(self._state))
def motion_notify(self, widget, event):
if self._pressed:
self._moved = True
self.update_selection(event)
else:
self.update_cursor(event)
def button_press(self, widget, event):
self._pressed = True
self._moved = False
self._mouse_x = event.x
self._mouse_y = event.y
self._press_x = event.x
self._press_y = event.y
if event.button == 3:
self.reset_selection()
def configure_event(self, widget, event):
x, y, width, height = widget.get_allocation()
self.pixmap = gtk.gdk.Pixmap(widget.window, width, height)
self.pixmap.draw_rectangle(widget.get_style().white_gc,
True, 0, 0, width, height)
self.pixmap_shaded = gtk.gdk.Pixmap(widget.window, width, height)
self.pixmap_shaded.draw_rectangle(widget.get_style().white_gc,
True, 0, 0, width, height)
self._has_overlay = False
return True
def create_overlay(self):
context = self.pixmap_shaded.cairo_create()
width = self.pixbuf.get_width()
height = self.pixbuf.get_height()
target = context.get_target()
overlay = target.create_similar(cairo.CONTENT_COLOR_ALPHA, width, height)
punch = target.create_similar(cairo.CONTENT_ALPHA, width, height)
context.set_source_pixbuf(self.pixbuf, 0, 0)
context.fill()
context.paint()
# Draw a grey overlay
overlay_cr = cairo.Context (overlay)
overlay_cr.set_source_rgba (0.4, 0.4, 0.4, 0.6)
overlay_cr.rectangle(0, 0, width, height)
overlay_cr.fill()
context.set_source_surface (overlay, 0, 0)
context.paint()
self._has_overlay = True
def redraw_canvas(self):
if self.window:
alloc = self.get_allocation()
self.queue_draw_area(alloc.x, alloc.y, alloc.width, alloc.height)
def do_size_request(self, requisition):
if not self.pixbuf:
return
requisition.width = self.pixbuf.get_width()
requisition.height = self.pixbuf.get_height()
def set_from_pixbuf(self, pixbuf):
h = pixbuf.get_height()
w = pixbuf.get_width()
edge = max(w, h)
self._trans_pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, True, 8,
edge, edge)
self._disp_pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, True, 8,
edge, edge)
self._trans_pixbuf.fill(0xffffff00)
self._disp_pixbuf.fill(0x66666666)
dx = (edge-w)/2
dy = (edge-h)/2
pixbuf.composite(self._trans_pixbuf, dx, dy, w, h, dx, dy, 1, 1,
gtk.gdk.INTERP_BILINEAR, 255)
pixbuf.composite(self._disp_pixbuf, dx, dy, w, h, dx, dy, 1, 1,
gtk.gdk.INTERP_BILINEAR, 255)
maxw = int(0.75 * gtk.gdk.screen_width())
maxh = int(0.75 * gtk.gdk.screen_height())
if w > maxw or h > maxh:
wscale = float(maxw) / edge
hscale = float(maxh) / edge
scale = min(wscale, hscale)
edge = int(edge * scale)
self._trans_pixbuf = self._trans_pixbuf.scale_simple(edge, edge,
gtk.gdk.INTERP_BILINEAR )
self._disp_pixbuf = self._disp_pixbuf.scale_simple(edge, edge,
gtk.gdk.INTERP_BILINEAR )
self._init_pixbuf()
def _init_pixbuf(self, angle=None, create_selection=True):
self.pixbuf = self._disp_pixbuf.copy()
if angle and gtk.gtk_version >= (2, 10, 0):
self.pixbuf = self.pixbuf.rotate_simple(angle)
self.configure_event(self, None)
self._has_overlay = False
w = self.pixbuf.get_width()
h = self.pixbuf.get_height()
if create_selection:
sw = min((w, h))
x1 = int((w-sw)/2)
y1 = int((h-sw)/2)
self.selection = (x1, y1, sw, sw)
else:
self.selection = (0, 0, 0, 0)
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