2 /*
3 * A simple interface for previewing representations.
4 *
5 * Authors:
6 * Jon A. Cruz
7 *
8 * Copyright (C) 2005 Jon A. Cruz
9 *
10 * Released under GNU GPL, read the file 'COPYING' for more information
11 */
14 #include "previewholder.h"
16 #include <gtkmm/scrolledwindow.h>
17 #include <gtkmm/sizegroup.h>
18 #include <gtkmm/scrollbar.h>
21 namespace Inkscape {
22 namespace UI {
25 PreviewHolder::PreviewHolder() :
26 VBox(),
27 PreviewFillable(),
28 _scroller(0),
29 _zee0(0),
30 _zee1(0),
31 _zee2(0),
32 _anchor(Gtk::ANCHOR_CENTER),
33 _baseSize(Gtk::ICON_SIZE_MENU),
34 _view(VIEW_TYPE_LIST)
35 {
36 _scroller = manage(new Gtk::ScrolledWindow());
37 Gtk::Table* stuff = manage(new Gtk::Table( 1, 2 ));
38 stuff->set_col_spacings( 8 );
39 _insides = stuff;
41 // Add a container with the scroller and a spacer
42 Gtk::Table* spaceHolder = manage( new Gtk::Table(1, 2) );
43 _zee0 = manage( new Gtk::VBox() );
44 _scroller->add(*stuff);
45 spaceHolder->attach( *_scroller, 0, 1, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND );
46 spaceHolder->attach( *_zee0, 1, 2, 0, 1, Gtk::SHRINK, Gtk::FILL|Gtk::EXPAND );
48 pack_start(*spaceHolder, Gtk::PACK_EXPAND_WIDGET);
49 }
51 PreviewHolder::~PreviewHolder()
52 {
53 }
57 void PreviewHolder::clear()
58 {
59 items.clear();
60 rebuildUI();
61 }
63 void PreviewHolder::addPreview( Previewable* preview )
64 {
65 items.push_back(preview);
67 int i = items.size() - 1;
68 if ( _view == VIEW_TYPE_LIST ) {
69 Gtk::Widget* label = manage(preview->getPreview(PREVIEW_STYLE_BLURB, VIEW_TYPE_LIST, _baseSize));
70 Gtk::Widget* thing = manage(preview->getPreview(PREVIEW_STYLE_PREVIEW, VIEW_TYPE_LIST, _baseSize));
72 _insides->attach( *thing, 0, 1, i, i+1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND );
73 _insides->attach( *label, 1, 2, i, i+1, Gtk::FILL|Gtk::EXPAND, Gtk::SHRINK );
74 } else {
75 Gtk::Widget* thing = manage(items[i]->getPreview(PREVIEW_STYLE_PREVIEW, VIEW_TYPE_GRID, _baseSize));
76 int width = _baseSize == Gtk::ICON_SIZE_MENU ? 16 : 8;
77 int col = i % width;
78 int row = i / width;
79 if ( col == 0 ) {
80 // we just started a new row
81 _insides->resize( row + 1, width );
82 }
83 _insides->attach( *thing, col, col+1, row, row+1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND );
84 }
86 _scroller->show_all_children();
87 _scroller->queue_draw();
88 }
90 void PreviewHolder::setStyle(Gtk::BuiltinIconSize size, ViewType view)
91 {
92 if ( size != _baseSize || view != _view ) {
93 _baseSize = size;
94 _view = view;
95 rebuildUI();
96 }
97 }
99 void PreviewHolder::setOrientation( Gtk::AnchorType how )
100 {
101 if ( _anchor != how )
102 {
103 _anchor = how;
104 switch ( _anchor )
105 {
106 case Gtk::ANCHOR_NORTH:
107 case Gtk::ANCHOR_SOUTH:
108 {
109 //dynamic_cast<Gtk::ScrolledWindow*>(_scroller)->set_policy( Gtk::POLICY_AUTOMATIC, Gtk::POLICY_NEVER );
110 dynamic_cast<Gtk::ScrolledWindow*>(_scroller)->set_policy( Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC );
111 if ( !_zee1 )
112 {
113 _zee1 = manage( new Gtk::VBox() );
114 _zee2 = manage( new Gtk::VBox() );
116 // Trick to get the scrolled window to a minimum height larger than the scrollbar
118 Gtk::VScrollbar* vs = dynamic_cast<Gtk::ScrolledWindow*>(_scroller)->get_vscrollbar();
119 // TODO fix leakage
120 Glib::RefPtr<Gtk::SizeGroup> sizer = Gtk::SizeGroup::create(Gtk::SIZE_GROUP_VERTICAL);
121 sizer->add_widget( *_zee1 );
122 sizer->add_widget( *_zee2 );
123 sizer->add_widget( *vs );
125 _zee0->pack_start( *_zee1 );
126 _zee0->pack_start( *_zee2 );
127 }
128 }
129 break;
131 case Gtk::ANCHOR_EAST:
132 case Gtk::ANCHOR_WEST:
133 {
134 dynamic_cast<Gtk::ScrolledWindow*>(_scroller)->set_policy( Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC );
135 }
136 break;
138 default:
139 {
140 dynamic_cast<Gtk::ScrolledWindow*>(_scroller)->set_policy( Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC );
141 }
142 }
143 }
144 }
146 void PreviewHolder::rebuildUI()
147 {
148 _scroller->remove();
150 if ( _view == VIEW_TYPE_LIST ) {
151 Gtk::Table* stuff = manage(new Gtk::Table( 1, 2 ));
152 _insides = stuff;
153 stuff->set_col_spacings( 8 );
155 for ( unsigned int i = 0; i < items.size(); i++ ) {
156 Gtk::Widget* label = manage(items[i]->getPreview(PREVIEW_STYLE_BLURB, _view, _baseSize));
157 //label->set_alignment(Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER);
159 Gtk::Widget* thing = manage(items[i]->getPreview(PREVIEW_STYLE_PREVIEW, _view, _baseSize));
161 stuff->attach( *thing, 0, 1, i, i+1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND );
162 stuff->attach( *label, 1, 2, i, i+1, Gtk::FILL|Gtk::EXPAND, Gtk::SHRINK );
163 }
164 _scroller->add(*stuff);
165 } else {
166 int width = _baseSize == Gtk::ICON_SIZE_MENU ? 16 : 8;
167 int height = (items.size() + (width - 1)) / width;
168 if ( height < 1 ) {
169 height = 1;
170 }
172 Gtk::Table* stuff = manage(new Gtk::Table( height, width ));
173 _insides = stuff;
174 int col = 0;
175 int row = 0;
177 for ( unsigned int i = 0; i < items.size(); i++ ) {
178 Gtk::Widget* thing = manage(items[i]->getPreview(PREVIEW_STYLE_PREVIEW, _view, _baseSize));
180 stuff->attach( *thing, col, col+1, row, row+1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND );
181 col++;
182 if ( col >= width ) {
183 col = 0;
184 row++;
185 }
186 }
187 _scroller->add(*stuff);
188 }
190 _scroller->show_all_children();
191 _scroller->queue_draw();
192 }
198 } //namespace UI
199 } //namespace Inkscape
202 /*
203 Local Variables:
204 mode:c++
205 c-file-style:"stroustrup"
206 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
207 indent-tabs-mode:nil
208 fill-column:99
209 End:
210 */
211 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :