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),
     mWrapHeight(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
{
   req->width  = 0;
   req->height = mWrapHeight;
}


/*
 *-----------------------------------------------------------------------------
 *
 * 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(int 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);

   int unused;
   get_layout()->get_pixel_size(unused, mWrapHeight);

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


}; /* namespace view */
1	persson	1799	/* *************************************************************************
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	persson	2169	: mWrapWidth(0),
55			mWrapHeight(0)
56	persson	1799	{
57			get_layout()->set_wrap(Pango::WRAP_WORD_CHAR);
58			set_alignment(0.0, 0.0);
59			set_text(text);
60			}
61
62
63			/*
64			*-----------------------------------------------------------------------------
65			*
66			* view::WrapLabel::set_text --
67			*
68			* Override function for Label::set_text() that re-sets the wrapping
69			* width after the text is set.
70			*
71			* Results:
72			* None.
73			*
74			* Side effects:
75			* None.
76			*
77			*-----------------------------------------------------------------------------
78			*/
79
80			void
81			WrapLabel::set_text(const Glib::ustring &str) // IN: The text to set
82			{
83			Label::set_text(str);
84
85			SetWrapWidth(mWrapWidth);
86			}
87
88
89			/*
90			*-----------------------------------------------------------------------------
91			*
92			* view::WrapLabel::set_markup --
93			*
94			* Override function for Label::set_markup() that re-sets the wrapping
95			* width after the text is set.
96			*
97			* Results:
98			* None.
99			*
100			* Side effects:
101			* None.
102			*
103			*-----------------------------------------------------------------------------
104			*/
105
106			void
107			WrapLabel::set_markup(const Glib::ustring &str) // IN: The text to set
108			{
109			Label::set_markup(str);
110
111			SetWrapWidth(mWrapWidth);
112			}
113
114
115			/*
116			*-----------------------------------------------------------------------------
117			*
118			* view::WrapLabel::on_size_request --
119			*
120			* Override handler for the "size_request" signal. Forces the height
121			* to be the size necessary for the Pango layout, while allowing the
122			* width to be flexible.
123			*
124			* Results:
125			* None.
126			*
127			* Side effects:
128			* None.
129			*
130			*-----------------------------------------------------------------------------
131			*/
132
133			void
134			WrapLabel::on_size_request(Gtk::Requisition *req) // OUT: Our requested size
135			{
136	persson	2169	req->width = 0;
137			req->height = mWrapHeight;
138			}
139	persson	1799
140
141			/*
142			*-----------------------------------------------------------------------------
143			*
144			* view::WrapLabel::on_size_allocate --
145			*
146			* Override handler for the "size_allocate" signal. Sets the wrap width
147			* to the be width allocated to us.
148			*
149			* Results:
150			* None.
151			*
152			* Side effects:
153			* None.
154			*
155			*-----------------------------------------------------------------------------
156			*/
157
158			void
159			WrapLabel::on_size_allocate(Gtk::Allocation &alloc) // IN: Our allocation
160			{
161			Gtk::Label::on_size_allocate(alloc);
162
163			SetWrapWidth(alloc.get_width());
164			}
165
166
167			/*
168			*-----------------------------------------------------------------------------
169			*
170			* view::WrapLabel::SetWrapWidth --
171			*
172			* Sets the point at which the text should wrap.
173			*
174			* Results:
175			* None.
176			*
177			* Side effects:
178			* None.
179			*
180			*-----------------------------------------------------------------------------
181			*/
182
183			void
184	persson	2169	WrapLabel::SetWrapWidth(int width) // IN: The wrap width
185	persson	1799	{
186			if (width == 0) {
187			return;
188			}
189
190			/*
191			* We may need to reset the wrap width, so do this regardless of whether
192			* or not we've changed the width.
193			*/
194			get_layout()->set_width(width * Pango::SCALE);
195
196	persson	2169	int unused;
197			get_layout()->get_pixel_size(unused, mWrapHeight);
198
199	persson	1799	if (mWrapWidth != width) {
200			mWrapWidth = width;
201			queue_resize();
202			}
203			}
204
205
206			}; /* namespace view */