src/gigedit/wrapLabel.cc

/* *************************************************************************
 * Copyright (c) 2005 VMware, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * *************************************************************************/

#include <wrapLabel.hh>


/*
 * wrapLabel.cc --
 *
 *     A wrappable label widget.
 */


namespace view {


/*
 *-----------------------------------------------------------------------------
 *
 * view::WrapLabel::WrapLabel --
 *
 *      Constructor.
 *
 * Results:
 *      None.
 *
 * Side effects:
 *      None.
 *
 *-----------------------------------------------------------------------------
 */

WrapLabel::WrapLabel(const Glib::ustring &text) // IN: The label text
   : mWrapWidth(0)
{
   get_layout()->set_wrap(Pango::WRAP_WORD_CHAR);
   set_alignment(0.0, 0.0);
   set_text(text);
}


/*
 *-----------------------------------------------------------------------------
 *
 * view::WrapLabel::set_text --
 *
 *      Override function for Label::set_text() that re-sets the wrapping
 *      width after the text is set.
 *
 * Results:
 *      None.
 *
 * Side effects:
 *      None.
 *
 *-----------------------------------------------------------------------------
 */

void
WrapLabel::set_text(const Glib::ustring &str) // IN: The text to set
{
   Label::set_text(str);

   SetWrapWidth(mWrapWidth);
}


/*
 *-----------------------------------------------------------------------------
 *
 * view::WrapLabel::set_markup --
 *
 *      Override function for Label::set_markup() that re-sets the wrapping
 *      width after the text is set.
 *
 * Results:
 *      None.
 *
 * Side effects:
 *      None.
 *
 *-----------------------------------------------------------------------------
 */

void
WrapLabel::set_markup(const Glib::ustring &str) // IN: The text to set
{
   Label::set_markup(str);

   SetWrapWidth(mWrapWidth);
}


/*
 *-----------------------------------------------------------------------------
 *
 * view::WrapLabel::on_size_request --
 *
 *      Override handler for the "size_request" signal. Forces the height
 *      to be the size necessary for the Pango layout, while allowing the
 *      width to be flexible.
 *
 * Results:
 *      None.
 *
 * Side effects:
 *      None.
 *
 *-----------------------------------------------------------------------------
 */

void
WrapLabel::on_size_request(Gtk::Requisition *req) // OUT: Our requested size
{
   int width;
   int height;

   get_layout()->get_pixel_size(width, height);

   req->width  = 0;
   req->height = height;
}


/*
 *-----------------------------------------------------------------------------
 *
 * view::WrapLabel::on_size_allocate --
 *
 *      Override handler for the "size_allocate" signal. Sets the wrap width
 *      to the be width allocated to us.
 *
 * Results:
 *      None.
 *
 * Side effects:
 *      None.
 *
 *-----------------------------------------------------------------------------
 */

void
WrapLabel::on_size_allocate(Gtk::Allocation &alloc) // IN: Our allocation
{
   Gtk::Label::on_size_allocate(alloc);

   SetWrapWidth(alloc.get_width());
}


/*
 *-----------------------------------------------------------------------------
 *
 * view::WrapLabel::SetWrapWidth --
 *
 *      Sets the point at which the text should wrap.
 *
 * Results:
 *      None.
 *
 * Side effects:
 *      None.
 *
 *-----------------------------------------------------------------------------
 */

void
WrapLabel::SetWrapWidth(size_t width) // IN: The wrap width
{
   if (width == 0) {
      return;
   }

   /*
    * We may need to reset the wrap width, so do this regardless of whether
    * or not we've changed the width.
    */
   get_layout()->set_width(width * Pango::SCALE);

   if (mWrapWidth != width) {
      mWrapWidth = width;
      queue_resize();
   }
}


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