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/* Copyright 2016 Software Freedom Conservancy Inc.
*
* This software is licensed under the GNU Lesser General Public License
* (version 2.1 or later). See the COPYING file in this distribution.
*/
class EventDirectoryItem : CheckerboardItem {
private static int CROPPED_SCALE {
get {
return ThumbnailCache.Size.MEDIUM.get_scale()
+ ((ThumbnailCache.Size.BIG.get_scale() - ThumbnailCache.Size.MEDIUM.get_scale()) / 2);
}
}
public static Scaling squared_scaling = Scaling.to_fill_viewport(Dimensions(CROPPED_SCALE,
CROPPED_SCALE));
public Event event;
private Gdk.Rectangle paul_lynde = Gdk.Rectangle();
public EventDirectoryItem(Event event) {
base (event, Dimensions(CROPPED_SCALE, CROPPED_SCALE), get_formatted_title(event), event.get_comment(), true,
Pango.Alignment.CENTER);
this.event = event;
// find the center square
paul_lynde = get_paul_lynde_rect(event.get_primary_source());
// don't display yet, but claim its dimensions
clear_image(Dimensions.for_rectangle(paul_lynde));
// monitor the event for changes
Event.global.items_altered.connect(on_events_altered);
}
~EventDirectoryItem() {
Event.global.items_altered.disconnect(on_events_altered);
}
// square the photo's dimensions and locate the pixbuf's center square
private static Gdk.Rectangle get_paul_lynde_rect(MediaSource source) {
Dimensions scaled = squared_scaling.get_scaled_dimensions(source.get_dimensions());
Gdk.Rectangle paul_lynde = Gdk.Rectangle();
paul_lynde.x = (scaled.width - CROPPED_SCALE).clamp(0, scaled.width) / 2;
paul_lynde.y = (scaled.height - CROPPED_SCALE).clamp(0, scaled.height) / 2;
paul_lynde.width = CROPPED_SCALE;
paul_lynde.height = CROPPED_SCALE;
return paul_lynde;
}
// scale and crop the center square of the media
private static Gdk.Pixbuf get_paul_lynde(MediaSource media, Gdk.Rectangle paul_lynde) throws Error {
Gdk.Pixbuf pixbuf = media.get_preview_pixbuf(squared_scaling);
Dimensions thumbnail_dimensions = Dimensions.for_pixbuf(pixbuf);
if (thumbnail_dimensions.width > 2 * paul_lynde.width ||
thumbnail_dimensions.height > paul_lynde.height * 2 ) {
LibraryPhoto photo = (LibraryPhoto) media;
pixbuf = photo.get_pixbuf(squared_scaling);
thumbnail_dimensions = Dimensions.for_pixbuf(pixbuf);
}
// to catch rounding errors in the two algorithms
paul_lynde = clamp_rectangle(paul_lynde, thumbnail_dimensions);
// crop the center square
return new Gdk.Pixbuf.subpixbuf(pixbuf, paul_lynde.x, paul_lynde.y, paul_lynde.width,
paul_lynde.height);
}
private static string get_formatted_title(Event event) {
bool has_photos = MediaSourceCollection.has_photo(event.get_media());
bool has_videos = MediaSourceCollection.has_video(event.get_media());
int count = event.get_media_count();
string count_text = "";
if (has_photos && has_videos)
count_text = ngettext("%d Photo/Video", "%d Photos/Videos", count).printf(count);
else if (has_videos)
count_text = ngettext("%d Video", "%d Videos", count).printf(count);
else
count_text = ngettext("%d Photo", "%d Photos", count).printf(count);
string? daterange = event.get_formatted_daterange();
string name = event.get_name();
// if we don't have a daterange or if it's the same as name, then don't print it; otherwise
// print it beneath the preview photo
if (daterange == null || daterange == name)
return "<b>%s</b>\n%s".printf(guarded_markup_escape_text(name),
guarded_markup_escape_text(count_text));
else
return "<b>%s</b>\n%s\n%s".printf(guarded_markup_escape_text(name),
guarded_markup_escape_text(count_text), guarded_markup_escape_text(daterange));
}
public override void exposed() {
if (is_exposed())
return;
try {
set_image(get_paul_lynde(event.get_primary_source(), paul_lynde));
} catch (Error err) {
critical("Unable to fetch preview for %s: %s", event.to_string(), err.message);
}
update_comment();
base.exposed();
}
public override void unexposed() {
if (!is_exposed())
return;
clear_image(Dimensions.for_rectangle(paul_lynde));
base.unexposed();
}
private void on_events_altered(Gee.Map<DataObject, Alteration> map) {
update_comment();
if (map.has_key(event))
set_title(get_formatted_title(event), true, Pango.Alignment.CENTER);
}
protected override void thumbnail_altered() {
MediaSource media = event.get_primary_source();
// get new center square
paul_lynde = get_paul_lynde_rect(media);
if (is_exposed()) {
try {
set_image(get_paul_lynde(media, paul_lynde));
} catch (Error err) {
critical("Unable to fetch preview for %s: %s", event.to_string(), err.message);
}
} else {
clear_image(Dimensions.for_rectangle(paul_lynde));
}
base.thumbnail_altered();
}
protected override void paint_shadow(Cairo.Context ctx, Dimensions dimensions, Gdk.Point origin,
int radius, float initial_alpha) {
Dimensions altered = Dimensions(dimensions.width - 25, dimensions.height - 25);
base.paint_shadow(ctx, altered, origin, 36, initial_alpha);
}
protected override void paint_border(Cairo.Context ctx, Dimensions object_dimensions,
Gdk.Point object_origin, int border_width) {
Dimensions dimensions = get_border_dimensions(object_dimensions, border_width);
Gdk.Point origin = get_border_origin(object_origin, border_width);
draw_rounded_corners_filled(ctx, dimensions, origin, 6.0);
}
protected override void paint_image(Cairo.Context ctx, Gdk.Pixbuf pixbuf,
Gdk.Point origin) {
Dimensions dimensions = Dimensions.for_pixbuf(pixbuf);
if (pixbuf.get_has_alpha())
draw_rounded_corners_filled(ctx, dimensions, origin, 6.0);
// use rounded corners on events
context_rounded_corners(ctx, dimensions, origin, 6.0);
Gdk.cairo_set_source_pixbuf(ctx, pixbuf, origin.x, origin.y);
ctx.paint();
}
private void update_comment(bool init = false) {
string comment = event.get_comment();
if (is_string_empty(comment))
clear_comment();
else if (!init)
set_comment(comment);
else
set_comment("");
}
}
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