1 /** @file
2 * @brief A simple dialog for previewing icon representation.
3 */
4 /* Authors:
5 * Jon A. Cruz
6 * Bob Jamison
7 * Other dudes from The Inkscape Organization
8 *
9 * Copyright (C) 2004 Bob Jamison
10 * Copyright (C) 2005,2010 Jon A. Cruz
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
14 #ifdef HAVE_CONFIG_H
15 # include <config.h>
16 #endif
18 #include <gtk/gtk.h>
19 #include <glib/gmem.h>
20 #include <glibmm/i18n.h>
21 #include <gtkmm/alignment.h>
22 #include <gtkmm/buttonbox.h>
23 #include <gtkmm/stock.h>
25 #include "desktop.h"
26 #include "desktop-handles.h"
27 #include "display/nr-arena.h"
28 #include "document.h"
29 #include "inkscape.h"
30 #include "preferences.h"
31 #include "selection.h"
32 #include "sp-root.h"
33 #include "xml/repr.h"
35 #include "icon-preview.h"
37 extern "C" {
38 // takes doc, root, icon, and icon name to produce pixels
39 guchar *
40 sp_icon_doc_icon( SPDocument *doc, NRArenaItem *root,
41 const gchar *name, unsigned int psize );
42 }
44 namespace Inkscape {
45 namespace UI {
46 namespace Dialog {
49 IconPreviewPanel &IconPreviewPanel::getInstance()
50 {
51 IconPreviewPanel *instance = new IconPreviewPanel();
53 instance->refreshPreview();
55 return *instance;
56 }
58 //#########################################################################
59 //## E V E N T S
60 //#########################################################################
62 void IconPreviewPanel::on_button_clicked(int which)
63 {
64 if ( hot != which ) {
65 buttons[hot]->set_active( false );
67 hot = which;
68 updateMagnify();
69 _getContents()->queue_draw();
70 }
71 }
76 //#########################################################################
77 //## C O N S T R U C T O R / D E S T R U C T O R
78 //#########################################################################
79 /**
80 * Constructor
81 */
82 IconPreviewPanel::IconPreviewPanel() :
83 UI::Widget::Panel("", "/dialogs/iconpreview", SP_VERB_VIEW_ICON_PREVIEW),
84 deskTrack(),
85 desktop(0),
86 document(0),
87 timer(0),
88 pending(false),
89 targetId(),
90 hot(1),
91 selectionButton(0),
92 desktopChangeConn(),
93 docReplacedConn(),
94 docModConn(),
95 selChangedConn()
96 {
97 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
98 numEntries = 0;
100 bool pack = prefs->getBool("/iconpreview/pack", true);
102 std::vector<Glib::ustring> pref_sizes = prefs->getAllDirs("/iconpreview/sizes/default");
103 std::vector<int> rawSizes;
105 for (std::vector<Glib::ustring>::iterator i = pref_sizes.begin(); i != pref_sizes.end(); ++i) {
106 if (prefs->getBool(*i + "/show", true)) {
107 int sizeVal = prefs->getInt(*i + "/value", -1);
108 if (sizeVal > 0) {
109 rawSizes.push_back(sizeVal);
110 }
111 }
112 }
114 if ( !rawSizes.empty() ) {
115 numEntries = rawSizes.size();
116 sizes = new int[numEntries];
117 int i = 0;
118 for ( std::vector<int>::iterator it = rawSizes.begin(); it != rawSizes.end(); ++it, ++i ) {
119 sizes[i] = *it;
120 }
121 }
123 if ( numEntries < 1 )
124 {
125 numEntries = 5;
126 sizes = new int[numEntries];
127 sizes[0] = 16;
128 sizes[1] = 24;
129 sizes[2] = 32;
130 sizes[3] = 48;
131 sizes[4] = 128;
132 }
134 pixMem = new guchar*[numEntries];
135 images = new Gtk::Image*[numEntries];
136 labels = new Glib::ustring*[numEntries];
137 buttons = new Gtk::ToggleToolButton*[numEntries];
140 for ( int i = 0; i < numEntries; i++ ) {
141 char *label = g_strdup_printf(_("%d x %d"), sizes[i], sizes[i]);
142 labels[i] = new Glib::ustring(label);
143 g_free(label);
144 pixMem[i] = 0;
145 images[i] = 0;
146 }
149 magLabel.set_label( *labels[hot] );
151 Gtk::VBox* magBox = new Gtk::VBox();
153 Gtk::Frame *magFrame = Gtk::manage(new Gtk::Frame(_("Magnified:")));
154 magFrame->add( magnified );
156 magBox->pack_start( *magFrame, Gtk::PACK_EXPAND_WIDGET );
157 magBox->pack_start( magLabel, Gtk::PACK_SHRINK );
160 Gtk::VBox *verts = new Gtk::VBox();
161 Gtk::HBox *horiz = 0;
162 int previous = 0;
163 int avail = 0;
164 for ( int i = numEntries - 1; i >= 0; --i ) {
165 pixMem[i] = new guchar[4 * sizes[i] * sizes[i]];
166 memset( pixMem[i], 0x00, 4 * sizes[i] * sizes[i] );
168 GdkPixbuf *pb = gdk_pixbuf_new_from_data( pixMem[i], GDK_COLORSPACE_RGB, TRUE, 8, sizes[i], sizes[i], sizes[i] * 4, /*(GdkPixbufDestroyNotify)g_free*/NULL, NULL );
169 GtkImage* img = GTK_IMAGE( gtk_image_new_from_pixbuf( pb ) );
170 images[i] = Glib::wrap(img);
171 Glib::ustring label(*labels[i]);
172 buttons[i] = new Gtk::ToggleToolButton(label);
173 buttons[i]->set_active( i == hot );
174 if ( prefs->getBool("/iconpreview/showFrames", true) ) {
175 Gtk::Frame *frame = new Gtk::Frame();
176 frame->set_shadow_type(Gtk::SHADOW_ETCHED_IN);
177 frame->add(*images[i]);
178 buttons[i]->set_icon_widget(*Gtk::manage(frame));
179 } else {
180 buttons[i]->set_icon_widget(*images[i]);
181 }
183 tips.set_tip((*buttons[i]), label);
185 buttons[i]->signal_clicked().connect( sigc::bind<int>( sigc::mem_fun(*this, &IconPreviewPanel::on_button_clicked), i) );
188 Gtk::Alignment *align = Gtk::manage(new Gtk::Alignment(0.5, 0.5, 0, 0));
189 align->add(*buttons[i]);
191 int pad = 12;
192 if ( !pack || ( (avail == 0) && (previous == 0) ) ) {
193 verts->pack_end(*align, Gtk::PACK_SHRINK);
194 previous = sizes[i];
195 avail = sizes[i];
196 } else {
197 if ((avail < pad) || ((sizes[i] > avail) && (sizes[i] < previous))) {
198 horiz = 0;
199 }
200 if ((horiz == 0) && (sizes[i] <= previous)) {
201 avail = previous;
202 }
203 if (sizes[i] <= avail) {
204 if (!horiz) {
205 horiz = Gtk::manage(new Gtk::HBox());
206 avail = previous;
207 verts->pack_end(*horiz, Gtk::PACK_SHRINK);
208 }
209 horiz->pack_start(*align, Gtk::PACK_EXPAND_WIDGET);
210 avail -= sizes[i];
211 avail -= pad; // a little extra for padding
212 } else {
213 horiz = 0;
214 verts->pack_end(*align, Gtk::PACK_SHRINK);
215 }
216 }
217 }
219 iconBox.pack_start(splitter);
220 splitter.pack1( *magBox, true, true );
221 Gtk::Frame *actuals = Gtk::manage(new Gtk::Frame(_("Actual Size:")));
222 actuals->add(*verts);
223 splitter.pack2( *actuals, false, false );
226 selectionButton = new Gtk::CheckButton(_("Selection")); // , GTK_RESPONSE_APPLY
227 magBox->pack_start( *selectionButton, Gtk::PACK_SHRINK );
228 tips.set_tip((*selectionButton), _("Selection only or whole document"));
229 selectionButton->signal_clicked().connect( sigc::mem_fun(*this, &IconPreviewPanel::modeToggled) );
231 gint val = prefs->getBool("/iconpreview/selectionOnly");
232 selectionButton->set_active( val != 0 );
235 _getContents()->pack_start(iconBox, Gtk::PACK_SHRINK);
237 show_all_children();
239 // Connect this up last
240 desktopChangeConn = deskTrack.connectDesktopChanged( sigc::mem_fun(*this, &IconPreviewPanel::setDesktop) );
241 deskTrack.connect(GTK_WIDGET(gobj()));
242 }
244 IconPreviewPanel::~IconPreviewPanel()
245 {
246 setDesktop(0);
247 if (timer) {
248 timer->stop();
249 delete timer;
250 timer = 0;
251 }
253 selChangedConn.disconnect();
254 docModConn.disconnect();
255 docReplacedConn.disconnect();
256 desktopChangeConn.disconnect();
257 deskTrack.disconnect();
258 }
260 //#########################################################################
261 //## M E T H O D S
262 //#########################################################################
265 void IconPreviewPanel::setDesktop( SPDesktop* desktop )
266 {
267 Panel::setDesktop(desktop);
269 SPDocument *newDoc = (desktop) ? desktop->doc() : 0;
271 if ( desktop != this->desktop ) {
272 docReplacedConn.disconnect();
273 selChangedConn.disconnect();
275 this->desktop = Panel::getDesktop();
276 if ( this->desktop ) {
277 docReplacedConn = this->desktop->connectDocumentReplaced(sigc::hide<0>(sigc::mem_fun(this, &IconPreviewPanel::setDocument)));
278 if (this->desktop->selection) {
279 selChangedConn = desktop->selection->connectChanged(sigc::hide(sigc::mem_fun(this, &IconPreviewPanel::queueRefresh)));
280 }
281 }
282 }
283 setDocument(newDoc);
284 deskTrack.setBase(desktop);
285 }
287 void IconPreviewPanel::setDocument( SPDocument *document )
288 {
289 if (this->document != document) {
290 docModConn.disconnect();
292 this->document = document;
293 if (this->document) {
294 docModConn = this->document->connectModified(sigc::hide(sigc::mem_fun(this, &IconPreviewPanel::queueRefresh)));
295 queueRefresh();
296 }
297 }
298 }
300 void IconPreviewPanel::refreshPreview()
301 {
302 SPDesktop *desktop = getDesktop();
303 if (!timer) {
304 timer = new Glib::Timer();
305 }
306 if (timer->elapsed() < 0.1) {
307 // Do not refresh too quickly
308 queueRefresh();
309 } else if ( desktop ) {
310 bool hold = Inkscape::Preferences::get()->getBool("/iconpreview/selectionHold", true);
311 if ( selectionButton && selectionButton->get_active() )
312 {
313 SPObject *target = (hold && !targetId.empty()) ? desktop->doc()->getObjectById( targetId.c_str() ) : 0;
314 if ( !target ) {
315 targetId.clear();
316 Inkscape::Selection * sel = sp_desktop_selection(desktop);
317 if ( sel ) {
318 //g_message("found a selection to play with");
320 GSList const *items = sel->itemList();
321 while ( items && !target ) {
322 SPItem* item = SP_ITEM( items->data );
323 SPObject * obj = SP_OBJECT(item);
324 gchar const *id = obj->getId();
325 if ( id ) {
326 targetId = id;
327 target = obj;
328 }
330 items = g_slist_next(items);
331 }
332 }
333 }
334 if ( target ) {
335 renderPreview(target);
336 }
337 } else {
338 SPObject *target = desktop->currentRoot();
339 if ( target ) {
340 renderPreview(target);
341 }
342 }
343 timer->reset();
344 }
345 }
347 bool IconPreviewPanel::refreshCB()
348 {
349 bool callAgain = true;
350 if (!timer) {
351 timer = new Glib::Timer();
352 }
353 if ( timer->elapsed() > 0.1 ) {
354 callAgain = false;
355 refreshPreview();
356 pending = false;
357 }
358 return callAgain;
359 }
361 void IconPreviewPanel::queueRefresh()
362 {
363 if (!pending) {
364 pending = true;
365 if (!timer) {
366 timer = new Glib::Timer();
367 }
368 Glib::signal_idle().connect( sigc::mem_fun(this, &IconPreviewPanel::refreshCB), Glib::PRIORITY_DEFAULT_IDLE );
369 }
370 }
372 void IconPreviewPanel::modeToggled()
373 {
374 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
375 bool selectionOnly = (selectionButton && selectionButton->get_active());
376 prefs->setBool("/iconpreview/selectionOnly", selectionOnly);
377 if ( !selectionOnly ) {
378 targetId.clear();
379 }
381 refreshPreview();
382 }
384 void IconPreviewPanel::renderPreview( SPObject* obj )
385 {
386 SPDocument * doc = SP_OBJECT_DOCUMENT(obj);
387 gchar const * id = obj->getId();
389 // g_message(" setting up to render '%s' as the icon", id );
391 NRArenaItem *root = NULL;
393 /* Create new arena */
394 NRArena *arena = NRArena::create();
396 /* Create ArenaItem and set transform */
397 unsigned int visionkey = sp_item_display_key_new(1);
399 root = sp_item_invoke_show ( SP_ITEM( SP_DOCUMENT_ROOT(doc) ),
400 arena, visionkey, SP_ITEM_SHOW_DISPLAY );
402 for ( int i = 0; i < numEntries; i++ ) {
403 guchar * px = sp_icon_doc_icon( doc, root, id, sizes[i] );
404 // g_message( " size %d %s", sizes[i], (px ? "worked" : "failed") );
405 if ( px ) {
406 memcpy( pixMem[i], px, sizes[i] * sizes[i] * 4 );
407 g_free( px );
408 px = 0;
409 } else {
410 memset( pixMem[i], 0, sizes[i] * sizes[i] * 4 );
411 }
412 images[i]->queue_draw();
413 }
414 updateMagnify();
416 sp_item_invoke_hide(SP_ITEM(sp_document_root(doc)), visionkey);
417 nr_object_unref((NRObject *) arena);
418 }
420 void IconPreviewPanel::updateMagnify()
421 {
422 Glib::RefPtr<Gdk::Pixbuf> buf = images[hot]->get_pixbuf()->scale_simple( 128, 128, Gdk::INTERP_NEAREST );
423 magLabel.set_label( *labels[hot] );
424 magnified.set( buf );
425 magnified.queue_draw();
426 magnified.get_parent()->queue_draw();
427 }
429 } //namespace Dialogs
430 } //namespace UI
431 } //namespace Inkscape
433 /*
434 Local Variables:
435 mode:c++
436 c-file-style:"stroustrup"
437 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
438 indent-tabs-mode:nil
439 fill-column:99
440 End:
441 */
442 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :