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ocarina: Scroll treeview to current song 

I do this whenever the current song changes.
This commit is contained in:
Bryan Schumaker 2011-12-12 08:35:11 -05:00
parent 64aff6a849
commit 01b6df4f47
5 changed files with 67 additions and 1 deletions
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3
include/ocarina/library.h
View File

@ -1,6 +1,8 @@
#ifndef OCARINA_LIBRARY_H
#define OCARINA_LIBRARY_H
#include <libsaria/track.h>
namespace ocarina
{
namespace library
@ -9,6 +11,7 @@ namespace ocarina
void init();
void refresh();
void refilter();
void scroll_to(Track &);
}
};

1
include/ocarina/songlist.h
View File

@ -63,6 +63,7 @@ class SongList : public libsaria::SourceModel
void clear();
void refilter();
void list_selected_ids(list<ino_t> &);
void scroll_to(Track &);
gint right_click(guint, guint64);
};

8
ocarina/callback.cpp
View File

@ -48,10 +48,16 @@ void cb_refilter()
ocarina::library::refilter();
}
void cb_track_loaded_helper(Track &track)
{
change_footer(track);
ocarina::library::scroll_to(track);
}
void cb_track_loaded()
{
println("Ocarina TRACK_LOADED callback!");
libsaria::current_track(change_footer);
libsaria::current_track(cb_track_loaded_helper);
}
void setup_callbacks()

5
ocarina/library.cpp
View File

@ -49,4 +49,9 @@ namespace ocarina
ocarina::library::refresh();
}
void library::scroll_to(Track &track)
{
library_list.scroll_to(track);
}
};

51
ocarina/songlist/songlist.cpp
View File

@ -66,3 +66,54 @@ void SongList::set_label_text()
gtk_label_set_text(GTK_LABEL(label), res.c_str());
}
struct scroll_data {
ino_t inode;
GtkWidget *treeview;
GdkRectangle rect;
};
static int scroll_to_check_row(GtkTreeModel *model, GtkTreePath *path,
GtkTreeIter *iter, gpointer data)
{
struct scroll_data *scroll = (struct scroll_data *)data;
ino_t current;
GtkTreeViewColumn *col;
GtkTreePath *target;
GdkRectangle area;
int n;
gtk_tree_model_get(model, iter, 0, &current, -1);
if (current != scroll->inode)
return FALSE;
col = gtk_tree_view_get_column(GTK_TREE_VIEW(scroll->treeview), 0);
gtk_tree_view_get_cell_area(GTK_TREE_VIEW(scroll->treeview), path, col, &area);
target = gtk_tree_path_copy(path);
if (area.height > 0) {
n = scroll->rect.height / area.height;
for (int i = 0; i < (n / 2); i++)
gtk_tree_path_prev(target);
}
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(scroll->treeview),
target, NULL, TRUE, 0, 0);
gtk_tree_view_set_cursor_on_cell(GTK_TREE_VIEW(scroll->treeview),
path, NULL, NULL, FALSE);
gtk_tree_path_free(target);
return TRUE;
}
void SongList::scroll_to(Track &track)
{
struct scroll_data data;
data.inode = track.get_inode();
data.treeview = treeview;
gtk_tree_view_get_visible_rect(GTK_TREE_VIEW(treeview), &data.rect);
/* Widget not realized yet */
if (data.rect.height == 0)
return;
gtk_tree_model_foreach(filter, scroll_to_check_row, &data);
}