1 # Copyright (C) 2007 by Aiwota Programmer
2 # aiwotaprog@tetteke.tk
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License as published by
6 # the Free Software Foundation; either version 2 of the License, or
7 # (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 class ThreadView(gtk.HBox):
25 hand_cursor = gtk.gdk.Cursor(gtk.gdk.HAND2)
26 regular_cursor = gtk.gdk.Cursor(gtk.gdk.XTERM)
27 arrow_cursor = gtk.gdk.Cursor(gtk.gdk.LEFT_PTR)
30 gtk.HBox.__init__(self, False, 0)
31 self.drawingarea = gtk.DrawingArea()
32 self.vscrollbar = gtk.VScrollbar()
33 self.pack_start(self.drawingarea)
34 self.pack_start(self.vscrollbar, expand=False)
35 self.adjustment = self.vscrollbar.get_adjustment()
37 self.drawingarea.add_events(
39 gtk.gdk.POINTER_MOTION_MASK |
40 gtk.gdk.BUTTON_PRESS_MASK |
41 gtk.gdk.BUTTON_RELEASE_MASK)
43 self.drawingarea_prev_width = 0
45 self.drawingarea.connect(
46 "expose-event", self.on_drawingarea_expose_event)
47 self.drawingarea.connect(
48 "configure-event", self.on_drawingarea_configure_event)
49 self.drawingarea.connect(
50 "scroll-event", self.on_drawingarea_scroll_event)
51 self.drawingarea.connect(
52 "motion-notify-event", self.on_drawingrarea_motion_notify_event)
53 self.drawingarea.connect(
54 "button-press-event", self.on_drawingarea_button_press_event)
55 self.drawingarea.connect(
56 "button-release-event", self.on_drawingarea_button_release_event)
57 self.vscrollbar.connect(
58 "value-changed", self.on_vscrollbar_value_changed)
60 self.initialize_buffer()
62 self.on_uri_clicked = self._on_uri_clicked
64 self.button1_pressed = False
65 self.current_pressed_uri = None
68 self.menu_openuri = None
69 self.menu_copylinkaddress = None
70 self.menu_separator_link = None
71 self.menu_copyselection = None
72 self.menu_openasuri = None
73 self.menu_separator_selection = None
77 def _on_uri_clicked(self, uri):
78 print uri, "clicked!!!!"
80 def initialize_buffer(self):
83 def add_layout(self, pangolayout):
84 if (len(self.pangolayout) != 0):
85 last = self.pangolayout[len(self.pangolayout)-1]
86 x, y = last.get_pixel_size()
87 pangolayout.posY = last.posY + y
88 self.set_layout_width(pangolayout)
89 self.pangolayout.append(pangolayout)
90 x, y = pangolayout.get_pixel_size()
91 self.vscrollbar.set_range(0, pangolayout.posY + y)
93 self.change_vscrollbar_visible()
95 def create_pango_layout(self, text):
96 return self.drawingarea.create_pango_layout(text)
98 def set_layout_width(self, layout):
99 width = self.drawingarea.allocation.width
100 layout.set_width((width - layout.marginleft) * pango.SCALE)
103 self.drawingarea.queue_draw()
106 width = self.drawingarea.allocation.width
108 for layout in self.pangolayout:
109 layout.set_width((width - layout.marginleft) * pango.SCALE)
110 layout.posY = sum_height
111 x, y = layout.get_pixel_size()
113 self.vscrollbar.set_range(0, sum_height)
114 self.change_vscrollbar_visible()
116 def change_vscrollbar_visible(self):
117 if self.adjustment.upper < self.adjustment.page_size:
118 self.vscrollbar.hide()
120 self.vscrollbar.show()
122 def jump(self, value):
123 self.vscrollbar.set_value(value)
125 def jump_to_layout(self, layout):
126 self.jump(layout.posY)
128 def jump_to_the_end(self):
129 value = self.adjustment.upper - self.adjustment.page_size
130 self.vscrollbar.set_value(value)
132 def jump_to_res(self, resnum):
133 for layout in self.pangolayout:
134 if layout.resnum == resnum:
135 self.jump_to_layout(layout)
139 def draw_viewport(self):
140 view_y = self.vscrollbar.get_value()
141 self.drawingarea.window.draw_rectangle(
142 self.drawingarea.style.base_gc[0],
144 self.drawingarea.allocation.width,
145 self.drawingarea.allocation.height)
147 gc = self.drawingarea.window.new_gc()
148 for layout in self.pangolayout:
149 w, h = layout.get_pixel_size()
150 layout_top = layout.posY
151 layout_bottom = layout.posY + h
153 area_bottom = view_y + self.drawingarea.allocation.height
154 if layout_top <= area_bottom and layout_bottom >= area_top:
155 self.drawingarea.window.draw_layout(
156 gc, layout.marginleft, layout.posY - int(view_y), layout)
158 def transform_coordinate_gdk_to_adj(self, y):
159 return y + self.vscrollbar.get_value()
161 def transform_coordinate_adj_to_layout(self, x, y, layout):
162 return x - layout.marginleft, y - layout.posY
164 def transform_coordinate_gdk_to_layout(self, x, y, layout):
165 return self.transform_coordinate_adj_to_layout(
166 x, self.transform_coordinate_gdk_to_adj(y), layout)
168 def ptrpos_to_layout(self, x, y):
169 # transform coordinate, GdkWindow -> adjustment
171 adj_y = self.transform_coordinate_gdk_to_adj(y)
172 for lay in self.pangolayout:
173 width, height = lay.get_pixel_size()
174 if (adj_y >= lay.posY and adj_y < lay.posY + height and
175 adj_x >= lay.marginleft):
179 def ptrpos_to_uri(self, x, y):
180 # x, y is GdkWindow coordinate
182 layout = self.ptrpos_to_layout(x, y)
185 return None, None, None
187 # transform coordinate, GdkWindow -> pangolayout
188 lay_x, lay_y = self.transform_coordinate_gdk_to_layout(x, y, layout)
191 idx, clk = layout.xy_to_index(
192 int(lay_x)*pango.SCALE, int(lay_y)*pango.SCALE)
194 x, y, width, height = layout.index_to_pos(idx)
198 height /= pango.SCALE
199 if (lay_x >= x and lay_x < x + width and
200 lay_y >= y and lay_y < y + height):
202 for i, (start, end, href) in enumerate(layout.urilist):
203 if idx >= start and idx < end:
204 return href, layout, i
206 return None, layout, None
208 def on_drawingarea_expose_event(self, widget, event, data=None):
211 def on_drawingarea_configure_event(self, widget, event, data=None):
212 if event.width != self.drawingarea_prev_width:
214 self.drawingarea_prev_width = event.width
215 self.adjustment.page_size = self.drawingarea.allocation.height
216 self.vscrollbar.set_increments(20, self.drawingarea.allocation.height)
218 # re-set 'value' for prevent overflow
219 self.vscrollbar.set_value(self.vscrollbar.get_value())
220 self.change_vscrollbar_visible()
222 def on_vscrollbar_value_changed(self, widget, data=None):
223 self.drawingarea.queue_draw()
225 def on_drawingarea_scroll_event(self, widget, event, data=None):
226 self.vscrollbar.emit("scroll-event", event)
228 def on_drawingrarea_motion_notify_event(self, widget, event, data=None):
229 if event.state & gtk.gdk.BUTTON1_MASK != gtk.gdk.BUTTON1_MASK:
230 self.button1_pressed = False
232 cursor = ThreadView.regular_cursor
234 uri, layout, index = self.ptrpos_to_uri(event.x, event.y)
236 cursor = ThreadView.arrow_cursor
238 if uri is not None and uri != "":
239 cursor = ThreadView.hand_cursor
241 self.drawingarea.window.set_cursor(cursor)
243 def on_drawingarea_button_press_event(self, widget, event, data=None):
244 if event.button == 1:
245 self.current_pressed_uri = None
246 self.button1_pressed = True
247 uri, layout, index = self.ptrpos_to_uri(event.x, event.y)
248 if uri is not None and layout is not None and index is not None:
249 self.current_pressed_uri = (uri, layout, index)
250 elif event.button == 3:
252 uri, layout, index = self.ptrpos_to_uri(event.x, event.y)
253 if uri is not None and layout is not None and index is not None:
254 self.menu_openuri.show()
255 self.menu_copylinkaddress.show()
256 self.menu_separator_link.show()
257 self.menu_openuri.uri = uri
258 self.menu_copylinkaddress.uri = uri
260 self.menu_openuri.hide()
261 self.menu_copylinkaddress.hide()
262 self.menu_separator_link.hide()
263 self.menu_openuri.uri = None
264 self.menu_copylinkaddress.uri = None
266 self.menu_copyselection.hide()
267 self.menu_openasuri.hide()
268 self.menu_separator_selection.hide()
270 self.popupmenu.popup(None, None, None, event.button, time)
274 def on_drawingarea_button_release_event(self, widget, event, data=None):
275 if event.button == 1:
276 button1_pressed = self.button1_pressed
277 self.button1_pressed = False
279 if button1_pressed and self.current_pressed_uri is not None:
280 uri, layout, index = self.ptrpos_to_uri(event.x, event.y)
281 p_uri, p_layout, p_index = self.current_pressed_uri
282 self.current_preesed_uri = None
283 if uri == p_uri and layout == p_layout and index == p_index:
284 self.on_uri_clicked(uri)