From f7ce8d5cf3b98fce6e1c0b667f880e6ef6b64711 Mon Sep 17 00:00:00 2001
From: Sam Nobs <3915450+samsta@users.noreply.github.com>
Date: Tue, 12 Jul 2022 19:15:35 +1200
Subject: [PATCH] Browser: allow tracks to be previewed or loaded using mouse

single click: preview
double click: load
---
 Browser.py               | 25 ++++++++++++++++++++-----
 src/LiveMusicBrowser.cpp | 24 ++++++++++++++----------
 src/main.cpp             |  3 +++
 3 files changed, 37 insertions(+), 15 deletions(-)

diff --git a/Browser.py b/Browser.py
index 0795d1d..d626a0c 100644
--- a/Browser.py
+++ b/Browser.py
@@ -231,11 +231,18 @@ def _iterate_and_find_audio(self, node):
     def scroll_horizontal(self, right_not_left):
         pass
 
+    def set_current_index(self, index):
+        if index >= len(self._filtered):
+            index = len(self._filtered) - 1
+        elif index < 0:
+            index = 0
+        self._current_index = index
+
     def scroll_vertical(self, down_not_up):
-        if down_not_up and self._current_index < len(self._filtered) - 1:
-            self._current_index = self._current_index + 1
-        elif not down_not_up and self._current_index > 0:
-            self._current_index = self._current_index - 1
+        if down_not_up:
+            self.set_current_index(self._current_index + 1)
+        else:
+            self.set_current_index(self._current_index - 1)
         self._update()
 
     def preview(self):
@@ -343,7 +350,7 @@ def set_decks(self, decks, master_deck_index):
 
     def _start_ui(self):
         pwd = pathlib.Path(__file__).parent.resolve()
-        os.system("'%s/build/LiveMusicBrowser' &" % pwd)
+        os.system("'%s/build/LiveMusicBrowser' > /tmp/LiveMusicBrowser.log &" % pwd)
         timeout = 10
         while (timeout > 0 and not os.path.exists(self.SOCKET_OUT)):
             time.sleep(0.1)
@@ -365,6 +372,14 @@ def poll(self):
             elif "bpm_percent" in data:
                 filter_changed = filter_changed or self._bpm_tolerance_percent != data["bpm_percent"]
                 self._bpm_tolerance_percent = data["bpm_percent"]
+            elif "preview_ix" in data:
+                self.set_current_index(data["preview_ix"])
+                self.preview()
+                self._update()
+            elif "load_ix" in data:
+                self.set_current_index(data["load_ix"])
+                self.load()
+                self._update()
 
             if filter_changed:
                 self._apply_filter()
diff --git a/src/LiveMusicBrowser.cpp b/src/LiveMusicBrowser.cpp
index 9d99209..b7661ab 100644
--- a/src/LiveMusicBrowser.cpp
+++ b/src/LiveMusicBrowser.cpp
@@ -93,7 +93,7 @@ void drawPlayingDecks(const json11::Json& data)
     }    
 }
 
-void drawBrowserList(const json11::Json& data)
+void drawBrowserList(const json11::Json& data, json11::Json& send_data)
 {
     ImGui::Text("Browse Files:");
     ImGuiTableFlags flags = ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg | ImGuiTableFlags_SizingFixedFit;
@@ -157,15 +157,19 @@ void drawBrowserList(const json11::Json& data)
                 ImGui::TableSetColumnIndex(column - display_column_offset);
                 if (column == 0)
                 {
-                    ImGui::Selectable(row[column].string_value().c_str(), row_ix == data["sel_ix"].int_value(), ImGuiSelectableFlags_SpanAllColumns);
-                }
-                else
-                {
-                    if (row[column].is_number()) {
-                        ImGui::Text("%3.5g", row[column].number_value());
-                    } else {
-                        ImGui::TextUnformatted(row[column].string_value().c_str());
+                    std::string unique_id = "##track" + std::to_string(row_ix); 
+                    if (ImGui::Selectable(unique_id.c_str(), row_ix == data["sel_ix"].int_value(), 
+                                          ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_AllowDoubleClick))
+                    {
+                        send_data = json11::Json::object{{ImGui::IsMouseDoubleClicked(0) ? "load_ix" : "preview_ix", json11::Json(row_ix)}};
                     }
+                    ImGui::SameLine();
+                }
+
+                if (row[column].is_number()) {
+                    ImGui::Text("%3.5g", row[column].number_value());
+                } else {
+                    ImGui::TextUnformatted(row[column].string_value().c_str());
                 }
             }
         }
@@ -208,7 +212,7 @@ void drawFrame(int display_w, int display_h, const json11::Json& data, json11::J
     ImGui::Separator();
     drawFilters(data, send_data);
     ImGui::Separator();
-    drawBrowserList(data);
+    drawBrowserList(data, send_data);
 
     ImGui::End();
     ImGui::PopStyleVar();
diff --git a/src/main.cpp b/src/main.cpp
index b8d08ac..fa6ec3c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -73,6 +73,9 @@ extern void drawFrame(int display_w, int display_h, const json11::Json& data, js
 
 int main(int, char**)
 {
+    // turn off line buffering to stdout to ease debugging
+    setlinebuf(stdout);
+
     // Setup window
     glfwSetErrorCallback(glfw_error_callback);
     if (!glfwInit())