1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*
Copyright (C) 2014 Paul Davis
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <iostream>
#include <cairomm/context.h>
#include "pbd/stacktrace.h"
#include "pbd/compose.h"
#include "canvas/canvas.h"
#include "canvas/widget.h"
#include "canvas/debug.h"
#include "canvas/utils.h"
using namespace std;
using namespace ArdourCanvas;
Widget::Widget (Canvas* c, CairoWidget& w)
: Item (c)
, _widget (w)
{
Event.connect (sigc::mem_fun (*this, &Widget::event_proxy));
}
Widget::Widget (Item* parent, CairoWidget& w)
: Item (parent)
, _widget (w)
{
Event.connect (sigc::mem_fun (*this, &Widget::event_proxy));
}
bool
Widget::event_proxy (GdkEvent* ev)
{
/* XXX need to translate coordinate into widget's own coordinate space */
return _widget.event (ev);
}
void
Widget::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
{
// std::cerr << "Render widget\n";
if (!_bounding_box) {
std::cerr << "no bbox\n";
return;
}
Rect self = item_to_window (_bounding_box.get());
boost::optional<Rect> r = self.intersection (area);
if (!r) {
std::cerr << "no intersection\n";
return;
}
Rect draw = r.get ();
cairo_rectangle_t crect;
crect.x = draw.x0;
crect.y = draw.y0;
crect.height = draw.height();
crect.width = draw.width();
// std::cerr << "will draw " << draw << "\n";
context->save ();
context->translate (-draw.x0, -draw.y0);
//context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
// context->clip ();
_widget.render (context->cobj(), &crect);
context->restore ();
}
void
Widget::compute_bounding_box () const
{
std::cerr << "cbbox for widget\n";
GtkRequisition req = { 0, 0 };
Gtk::Allocation alloc;
_widget.size_request (req);
std::cerr << "widget wants " << req.width << " x " << req.height << "\n";
_bounding_box = Rect (0, 0, req.width, req.height);
/* make sure the widget knows that it got what it asked for */
alloc.set_x (0);
alloc.set_y (0);
alloc.set_width (req.width);
alloc.set_height (req.height);
_widget.size_allocate (alloc);
_bounding_box_dirty = false;
}
|
