1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 # Implementation of the app.nit UI module for GNU/Linux
23 # Request width of the GTK window for an app.nit application
25 # This is the minimum width of the window, it may grow bigger to fit content.
26 fun gtk_window_width_request
: Int do return 480
29 redef fun setup
do gtk_init
31 # Single GTK window of this application
32 var native_window
: GtkWindow is lazy
do
33 var win
= new GtkWindow(new GtkWindowType.toplevel
)
34 win
.connect_destroy_signal_to_quit
35 win
.titlebar
= native_header_bar
41 var native_header_bar
: GtkHeaderBar is lazy
do
42 var bar
= new GtkHeaderBar
43 bar
.title
= "app.nit" # TODO offer a portable API to name windows
44 bar
.show_close_button
= true
46 # TODO add back button
51 # Root `GtkStack` used to simulate the many app.nit windows
52 var native_stack
: GtkStack is lazy
do
53 var stack
= new GtkStack
54 stack
.homogeneous
= false
58 # On GNU/Linux, we go through all the callbacks once,
59 # there is no complex life-cycle.
67 native_window
.show_all
76 # Spacing between GTK controls, default at 2
77 var control_spacing
= 2 is writable
79 redef fun window
=(window
)
81 var root_view
= window
.view
82 assert root_view
!= null
83 native_stack
.add root_view
.native
84 native_stack
.visible_child
= root_view
.native
86 # FIXME These settings forces the GTK window to resize to its minimum
87 # size when changing app.nit windows. It is not pretty, but it could be
88 # improved with GTK 3.18 and interpolate_size.
89 native_window
.resizable
= false
99 # The GTK element used to implement `self`
100 fun native
: NATIVE is abstract
103 type NATIVE: GtkWidget
108 if not native
.address_is_null
then native
.destroy
112 redef class CompositeControl
115 # On GNU/Linux, a window is implemented by placing the `view` in a `GtkStack` in the single GTK window
118 # Root view of this window
119 var view
: nullable View = null
123 if view
isa View then
125 view
.native
.valign
= new GtkAlign.start
126 view
.native
.set_size_request
(gtk_window_width_request
, 0)
136 redef fun enabled
do return native
.sensitive
137 redef fun enabled
=(enabled
) do native
.sensitive
= enabled
or else true
141 redef type NATIVE: GtkBox
146 if item
isa View then native
.add item
.native
149 redef fun remove
(item
)
152 if item
isa View then native
.remove item
.native
156 redef class HorizontalLayout
157 redef var native
= new GtkBox(new GtkOrientation.horizontal
, app
.control_spacing
)
162 # FIXME abstract the use either homogeneous or weight to balance views size in a layout
163 native
.homogeneous
= true
164 native
.set_child_packing
(item
.native
, true, true, 0, new GtkPackType.start
)
168 redef class VerticalLayout
169 redef var native
= new GtkBox(new GtkOrientation.vertical
, app
.control_spacing
)
175 native
.set_child_packing
(item
.native
, true, true, 0, new GtkPackType.start
)
179 # On GNU/Linux, this is implemented by a `GtkListBox` inside a `GtkScrolledWindow`
180 redef class ListLayout
182 redef type NATIVE: GtkScrolledWindow
184 redef var native
= new GtkScrolledWindow
186 # Container inside `native`
187 var native_list_box
= new GtkListBox
189 # `GtkListBoxRow` used to contains children `View`s
190 var native_rows
= new Map[View, GtkListBoxRow]
193 native_list_box
.selection_mode
= new GtkSelectionMode.none
194 native
.add native_list_box
196 # Set the size of the GtkScrolledWindow:
197 # use content width and set static height
198 native
.set_policy
(new GtkPolicyType.never
, new GtkPolicyType.automatic
)
199 native
.set_size_request
(gtk_window_width_request
, 640)
205 if item
isa View then
206 var native_row
= new GtkListBoxRow
207 #native_row.activable = false # TODO with GTK 3.14
208 #native_row.selectable = false
209 native_row
.add item
.native
211 native_rows
[item
] = native_row
212 native_list_box
.add native_row
217 redef fun remove
(item
)
220 if item
isa View then
221 var native_row
= native_rows
.get_or_null
(item
)
222 if native_row
== null then
223 print_error
"Error: {self} does not contains {item}"
227 native_list_box
.remove native_row
228 native_rows
.keys
.remove item
235 redef type NATIVE: GtkButton
236 redef var native
= new GtkButton
238 redef fun text
do return native
.text
239 redef fun text
=(value
) do native
.text
= (value
or else "").to_s
241 redef fun signal
(sender
, data
) do notify_observers
new ButtonPressEvent(self)
243 init do native
.signal_connect
("clicked", self, null)
247 redef type NATIVE: GtkLabel
248 redef var native
= new GtkLabel("")
250 redef fun text
do return native
.text
252 redef fun text
=(value
)
254 var cfmt
= pango_markup_format
.to_cstring
255 var cvalue
= (value
or else "").to_cstring
256 native
.set_markup
(cfmt
, cvalue
)
259 # Pango format string applied to the `text` attribute
260 var pango_markup_format
= "\%s" is lazy
262 redef fun size
=(size
)
264 if size
== null or size
== 1.0 then
265 pango_markup_format
= "\%s"
266 else if size
< 1.0 then
267 pango_markup_format
= "<span size=\"small\
">\%s</span>"
268 else#if size > 1.0 then
269 pango_markup_format
= "<span size=\"large\
">\%s</span>"
272 # Force reloading `text`
276 redef fun align
=(align
)
278 align
= align
or else 0.0
280 # Set whole label alignement
281 native
.set_alignment
(align
, 0.5)
283 # Set multiline justification
284 native
.justify
= if align
== 0.5 then
285 new GtkJustification.center
286 else if align
< 0.5 then
287 new GtkJustification.left
288 else#if align > 0.5 then
289 new GtkJustification.right
294 redef type NATIVE: GtkCheckButton
295 redef var native
= new GtkCheckButton
297 redef fun text
do return native
.text
298 redef fun text
=(value
) do native
.text
= (value
or else "").to_s
300 redef fun is_checked
do return native
.active
301 redef fun is_checked
=(value
) do native
.active
= value
304 redef class TextInput
305 redef type NATIVE: GtkEntry
306 redef var native
= new GtkEntry
308 redef fun text
do return native
.text
309 redef fun text
=(value
) do
310 if value
== null then value
= ""
311 native
.text
= value
.to_s
314 redef fun is_password
=(value
)
316 native
.visibility
= value
!= true