/[svn]/gigedit/trunk/src/gigedit/wrapLabel.cc
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Contents of /gigedit/trunk/src/gigedit/wrapLabel.cc

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Revision 3460 - (show annotations) (download)
Sat Feb 2 07:48:50 2019 UTC (20 months, 2 weeks ago) by persson
File size: 5657 byte(s)
* Use GDK Seat API if available to grab pointer
* Improve version checks for pangomm
* Fix the instrument list tooltip handling so it doesn't generate GTK
  assertion error messages
* Use English quotation marks in tooltips instead of German
* Use multiple columns in controller value popups, as tall popup menus
  work really badly in some GTK environments

1 /* *************************************************************************
2 * Copyright (c) 2005 VMware, Inc.
3 * Copyright (c) 2011 - 2017 Andreas Persson
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
19 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
20 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
21 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
22 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 * *************************************************************************/
24
25 #include "wrapLabel.hh"
26 #ifdef PANGOMM_HEADER_FILE
27 # include PANGOMM_HEADER_FILE(pangomm.h)
28 # include PANGOMM_HEADER_FILE(pangommconfig.h)
29 #else
30 # include <pangomm.h>
31 # include <pangommconfig.h>
32 #endif
33
34 // we don't need this WrapLabel helper class on GTKMM 3 and higher
35 #if GTKMM_MAJOR_VERSION < 3
36
37 /*
38 * wrapLabel.cc --
39 *
40 * A wrappable label widget.
41 */
42
43
44 namespace view {
45
46
47 /*
48 *-----------------------------------------------------------------------------
49 *
50 * view::WrapLabel::WrapLabel --
51 *
52 * Constructor.
53 *
54 * Results:
55 * None.
56 *
57 * Side effects:
58 * None.
59 *
60 *-----------------------------------------------------------------------------
61 */
62
63 WrapLabel::WrapLabel(const Glib::ustring &text) // IN: The label text
64 : mWrapWidth(0),
65 mWrapHeight(0)
66 {
67 // new enums introduced in unstable pangomm 2.41.3, but not in stable 2.42
68 #if PANGOMM_MAJOR_VERSION > 2 || (PANGOMM_MAJOR_VERSION == 2 && ((PANGOMM_MINOR_VERSION == 41 && PANGOMM_MICRO_VERSION >= 3) || PANGOMM_MINOR_VERSION > 42))
69 get_layout()->set_wrap(Pango::WrapMode::WORD_CHAR);
70 #else
71 get_layout()->set_wrap(Pango::WRAP_WORD_CHAR);
72 #endif
73 set_alignment(0.0, 0.0);
74 set_text(text);
75 }
76
77
78 /*
79 *-----------------------------------------------------------------------------
80 *
81 * view::WrapLabel::set_text --
82 *
83 * Override function for Label::set_text() that re-sets the wrapping
84 * width after the text is set.
85 *
86 * Results:
87 * None.
88 *
89 * Side effects:
90 * None.
91 *
92 *-----------------------------------------------------------------------------
93 */
94
95 void
96 WrapLabel::set_text(const Glib::ustring &str) // IN: The text to set
97 {
98 Label::set_text(str);
99
100 SetWrapWidth(mWrapWidth);
101 }
102
103
104 /*
105 *-----------------------------------------------------------------------------
106 *
107 * view::WrapLabel::set_markup --
108 *
109 * Override function for Label::set_markup() that re-sets the wrapping
110 * width after the text is set.
111 *
112 * Results:
113 * None.
114 *
115 * Side effects:
116 * None.
117 *
118 *-----------------------------------------------------------------------------
119 */
120
121 void
122 WrapLabel::set_markup(const Glib::ustring &str) // IN: The text to set
123 {
124 Label::set_markup(str);
125
126 SetWrapWidth(mWrapWidth);
127 }
128
129
130 /*
131 *-----------------------------------------------------------------------------
132 *
133 * view::WrapLabel::on_size_request --
134 *
135 * Override handler for the "size_request" signal. Forces the height
136 * to be the size necessary for the Pango layout, while allowing the
137 * width to be flexible.
138 *
139 * Results:
140 * None.
141 *
142 * Side effects:
143 * None.
144 *
145 *-----------------------------------------------------------------------------
146 */
147
148 void
149 WrapLabel::on_size_request(Gtk::Requisition *req) // OUT: Our requested size
150 {
151 req->width = 0;
152 req->height = mWrapHeight;
153 }
154
155
156 /*
157 *-----------------------------------------------------------------------------
158 *
159 * view::WrapLabel::on_size_allocate --
160 *
161 * Override handler for the "size_allocate" signal. Sets the wrap width
162 * to the be width allocated to us.
163 *
164 * Results:
165 * None.
166 *
167 * Side effects:
168 * None.
169 *
170 *-----------------------------------------------------------------------------
171 */
172
173 void
174 WrapLabel::on_size_allocate(Gtk::Allocation &alloc) // IN: Our allocation
175 {
176 Gtk::Label::on_size_allocate(alloc);
177
178 SetWrapWidth(alloc.get_width());
179 }
180
181
182 /*
183 *-----------------------------------------------------------------------------
184 *
185 * view::WrapLabel::SetWrapWidth --
186 *
187 * Sets the point at which the text should wrap.
188 *
189 * Results:
190 * None.
191 *
192 * Side effects:
193 * None.
194 *
195 *-----------------------------------------------------------------------------
196 */
197
198 void
199 WrapLabel::SetWrapWidth(int width) // IN: The wrap width
200 {
201 if (width == 0) {
202 return;
203 }
204
205 int xPadding, yPadding;
206 get_padding(xPadding, yPadding);
207
208 width -= 2 * xPadding;
209
210 /*
211 * We may need to reset the wrap width, so do this regardless of whether
212 * or not we've changed the width.
213 */
214 get_layout()->set_width(width * Pango::SCALE);
215
216 int unused;
217 get_layout()->get_pixel_size(unused, mWrapHeight);
218 mWrapHeight += 2 * yPadding;
219
220 if (mWrapWidth != width) {
221 mWrapWidth = width;
222 queue_resize();
223 }
224 }
225
226
227 }; /* namespace view */
228
229 #endif // GTKMM_MAJOR_VERSION < 3

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