From a0c4f6e2daafa8998bdb4efa3fc50f7d9b3bdb1c Mon Sep 17 00:00:00 2001
From: Chris Xiong <chirs241097@gmail.com>
Date: Mon, 29 Aug 2022 21:30:42 -0400
Subject: Add group skipping.

---
 mingui/main.cpp   | 16 +++++++++++++---
 mingui/mingui.cpp | 15 ++++++++++++++-
 mingui/mingui.hpp |  4 +++-
 3 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/mingui/main.cpp b/mingui/main.cpp
index 6856cad..57c2fb1 100644
--- a/mingui/main.cpp
+++ b/mingui/main.cpp
@@ -128,14 +128,14 @@ int main(int argc, char **argv)
     w = new MinGuiWidget();
     w->show_images(build_list(lists[curlist]));
     w->update_distances(build_dists(lists[curlist]));
-    w->update_permamsg(curlist, lists.size());
+    w->update_viewstatus(curlist, lists.size());
     w->show();
     QObject::connect(w, &MinGuiWidget::next,
                      []{
                            if (curlist < lists.size() - 1) ++curlist;
                            w->show_images(build_list(lists[curlist]));
                            w->update_distances(build_dists(lists[curlist]));
-                           w->update_permamsg(curlist, lists.size());
+                           w->update_viewstatus(curlist, lists.size());
 
     });
     QObject::connect(w, &MinGuiWidget::prev,
@@ -143,7 +143,17 @@ int main(int argc, char **argv)
                            if (curlist > 0) --curlist;
                            w->show_images(build_list(lists[curlist]));
                            w->update_distances(build_dists(lists[curlist]));
-                           w->update_permamsg(curlist, lists.size());
+                           w->update_viewstatus(curlist, lists.size());
+    });
+    QObject::connect(w, &MinGuiWidget::switch_group,
+                     [](size_t g){
+                           if (g < lists.size())
+                           {
+                               curlist = g;
+                               w->show_images(build_list(lists[curlist]));
+                               w->update_distances(build_dists(lists[curlist]));
+                               w->update_viewstatus(curlist, lists.size());
+                           }
     });
 
     a.exec();
diff --git a/mingui/mingui.cpp b/mingui/mingui.cpp
index c251f61..ab1a083 100644
--- a/mingui/mingui.cpp
+++ b/mingui/mingui.cpp
@@ -21,6 +21,7 @@
 #include <QKeySequence>
 #include <QTextEdit>
 #include <QMessageBox>
+#include <QInputDialog>
 #include <QDesktopServices>
 
 using std::size_t;
@@ -119,9 +120,11 @@ void MinGuiWidget::update_distances(const std::map<std::pair<size_t, size_t>, do
     infopanel->setText(r);
 }
 
-void MinGuiWidget::update_permamsg(std::size_t cur, std::size_t size)
+void MinGuiWidget::update_viewstatus(std::size_t cur, std::size_t size)
 {
     permamsg->setText(QString("Viewing group %1 of %2").arg(cur + 1).arg(size));
+    ngroups = size;
+    curgroup = cur;
 }
 
 void MinGuiWidget::save_list()
@@ -284,6 +287,16 @@ void MinGuiWidget::keyReleaseEvent(QKeyEvent *e)
         case Qt::Key::Key_M: Q_EMIT next(); break;
         case Qt::Key::Key_Z: Q_EMIT prev(); break;
         case Qt::Key::Key_N: load_list(); break;
+        case Qt::Key::Key_B:
+        {
+            bool ok = false;
+            int g = QInputDialog::getInt(this, "Skip to group",
+                                         QString("Group # (1-%1)").arg(ngroups),
+                                         curgroup + 1,
+                                         1, ngroups, 1, &ok);
+            if (ok) Q_EMIT switch_group((size_t) g - 1);
+        }
+        break;
         case Qt::Key::Key_Return: if (e->modifiers() & Qt::KeyboardModifier::ShiftModifier) save_list(); break;
     }
 }
diff --git a/mingui/mingui.hpp b/mingui/mingui.hpp
index 7aa7576..755b6ad 100644
--- a/mingui/mingui.hpp
+++ b/mingui/mingui.hpp
@@ -26,6 +26,7 @@ private:
     QWidget *imgcontainer;
     QStatusBar *sb;
     QScrollArea *sa;
+    std::size_t ngroups, curgroup;
     bool nohotkeywarn;
     void mark_toggle(std::size_t x);
     void mark_all_but(std::size_t x);
@@ -45,12 +46,13 @@ public:
     MinGuiWidget();
     void show_images(const std::vector<std::filesystem::path> &fns);
     void update_distances(const std::map<std::pair<std::size_t, std::size_t>, double> &d);
-    void update_permamsg(std::size_t cur, std::size_t size);
+    void update_viewstatus(std::size_t cur, std::size_t size);
     void save_list();
     void load_list();
 Q_SIGNALS:
     void next();
     void prev();
+    void switch_group(std::size_t group);
 };
 
 class ImageWidget : public QWidget
-- 
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