Updated navigator bar: select current source when activate icon and show

indicator for current source.

ImGuiToolkit.cpp

@@ -64,22 +64,29 @@ void ImGuiToolkit::ButtonToggle( const char* label, bool* toggle )
 }
 
 
-void ImGuiToolkit::ButtonSwitch(const char* label, bool* toggle)
+void ImGuiToolkit::ButtonSwitch(const char* label, bool* toggle, const char* help)
 {
+    // utility style
     ImVec4* colors = ImGui::GetStyle().Colors;
-    ImVec2 p = ImGui::GetCursorScreenPos();
     ImDrawList* draw_list = ImGui::GetWindowDrawList();
 
+    // draw position when entering
+    ImVec2 draw_pos = ImGui::GetCursorScreenPos();
+
+    // layout
+    float frame_height = ImGui::GetFrameHeight();
+    float frame_width = ImGui::GetContentRegionAvail().x;
     float height = ImGui::GetFrameHeight() * 0.75f;
     float width = height * 1.6f;
     float radius = height * 0.50f;
 
-    ImGui::InvisibleButton(label, ImVec2(width, height));
+    // toggle action : operate on the whole area
+    ImGui::InvisibleButton(label, ImVec2(frame_width, frame_height));
     if (ImGui::IsItemClicked())
         *toggle = !*toggle;
-
     float t = *toggle ? 1.0f : 0.0f;
 
+    // animation
     ImGuiContext& g = *GImGui;
     float ANIM_SPEED = 0.1f;
     if (g.LastActiveId == g.CurrentWindow->GetID(label))// && g.LastActiveIdTimer < ANIM_SPEED)
@@ -88,16 +95,30 @@ void ImGuiToolkit::ButtonSwitch(const char* label, bool* toggle)
         t = *toggle ? (t_anim) : (1.0f - t_anim);
     }
 
+    // hover
     ImU32 col_bg;
     if (ImGui::IsItemHovered())
         col_bg = ImGui::GetColorU32(ImLerp(colors[ImGuiCol_FrameBgHovered], colors[ImGuiCol_TabHovered], t));
     else
         col_bg = ImGui::GetColorU32(ImLerp(colors[ImGuiCol_FrameBg], colors[ImGuiCol_TabActive], t));
 
+    // draw help text if present
+    if (help) {
+        ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(0.6, 0.6, 0.6, 1.f));
+        ImGui::RenderText(draw_pos, help);
+        ImGui::PopStyleColor(1);
+    }
+
+    // draw the label right aligned
+    const ImVec2 label_size = ImGui::CalcTextSize(label, NULL, true);
+    ImVec2 text_pos = draw_pos + ImVec2(frame_width -120.f -label_size.x, 0.f);
+    ImGui::RenderText(text_pos, label);
+
+    // draw switch after the text
+    ImVec2 p = draw_pos + ImVec2(frame_width - 100.f, 0.f);
     draw_list->AddRectFilled(p, ImVec2(p.x + width, p.y + height), col_bg, height * 0.5f);
     draw_list->AddCircleFilled(ImVec2(p.x + radius + t * (width - radius * 2.0f), p.y + radius), radius - 1.5f, IM_COL32(255, 255, 255, 250));
-    ImGui::SameLine(0,22);
-    ImGui::Text(label);
+
 }
 
 

ImGuiToolkit.h

@@ -20,7 +20,7 @@ namespace ImGuiToolkit
     bool ButtonIconToggle(int i, int j, int i_toggle, int j_toggle, bool* toggle);
     bool ButtonIconMultistate(std::vector<std::pair<int, int> > icons, int* state);
     void ButtonToggle( const char* label, bool* toggle );
-    void ButtonSwitch( const char* label, bool* toggle );
+    void ButtonSwitch(const char* label, bool* toggle , const char *help = nullptr);
     void ButtonOpenWebpage( const char* url );
 
     void HelpMarker(const char* desc);

Mixer.cpp

@@ -112,6 +112,7 @@ void Mixer::setCurrentSource(SourceList::iterator it)
     unsetCurrentSource();
     if ( it != session_->end() ) {
         current_source_ = it;
+        current_source_index_ = session_->index(it);
         (*current_source_)->setOverlayVisible(true);
     }
 }
@@ -141,8 +142,15 @@ void Mixer::unsetCurrentSource()
     // discard overlay for previously current source
     if ( current_source_ != session_->end() )
         (*current_source_)->setOverlayVisible(false);
+
     // deselect current source
     current_source_ = session_->end();
+    current_source_index_ = -1;
+}
+
+int Mixer::indexCurrentSource()
+{
+    return current_source_index_;
 }
 
 Source *Mixer::currentSource()
@@ -295,6 +303,7 @@ void Mixer::newSession(Session *newsession)
 
     // no current source
     current_source_ = session_->end();
+    current_source_index_ = -1;
 
     // reset timer
     update_time_ = GST_CLOCK_TIME_NONE;

Mixer.h

@@ -46,8 +46,7 @@ public:
     void setCurrentSource(Source *s);
     void unsetCurrentSource();
     Source *currentSource();
-
-
+    int indexCurrentSource();
 
     // management of view
     View *getView(View::Mode m);
@@ -70,6 +69,7 @@ protected:
 
     Session *session_;
     SourceList::iterator current_source_;
+    int current_source_index_;
 
     MixingView mixing_;
     GeometryView geometry_;

Session.cpp

@@ -76,6 +76,9 @@ SourceList::iterator Session::end()
 
 SourceList::iterator Session::find(int index)
 {
+    if (index<0)
+        return sources_.end();
+
     int i = 0;
     SourceList::iterator it = sources_.begin();
     while ( i < index && it != sources_.end() ){
@@ -105,5 +108,16 @@ uint Session::numSource() const
     return sources_.size();
 }
 
-
+int Session::index(SourceList::iterator it) const
+{
+    int index = -1;
+    int count = 0;
+    for(auto i = sources_.begin(); i != sources_.end(); i++, count++) {
+        if ( i == it ) {
+            index = count;
+            break;
+        }
+    }
+    return index;
+}
 

Session.h

@@ -22,7 +22,9 @@ public:
     SourceList::iterator find(Source *s);
     SourceList::iterator find(std::string name);
     SourceList::iterator find(Node *node);
+
     uint numSource() const;
+    int index(SourceList::iterator it) const;
 
     // update all sources
     void update(float dt);

UserInterfaceManager.cpp

@@ -903,6 +903,7 @@ void UserInterface::RenderShaderEditor()
 SourceNavigator::SourceNavigator()
 {
     clearSelection();
+    selected_source_index = -1;
 }
 
 void SourceNavigator::toggle(int index)
@@ -911,16 +912,15 @@ void SourceNavigator::toggle(int index)
     clearSelection();
     selected_button[index] = s;
     if (s)
-        selected_source_index = index - 1;
+        selected_source_index = index;
     else
         selected_source_index = -1;
 }
 
 void SourceNavigator::clearSelection()
 {
-    for(int i=0; i<NAV_MAX; ++i)
+    for(int i=0; i<NAV_COUNT; ++i)
         selected_button[i] = false;
-    selected_source_index = -1;
 }
 
 void SourceNavigator::Render()
@@ -952,18 +952,31 @@ void SourceNavigator::Render()
             toggle(NAV_MENU);
         }
 
-        int index = 1;
+        int index = 0;
         SourceList::iterator iter;
         for (iter = Mixer::manager().session()->begin(); iter != Mixer::manager().session()->end(); iter++, index++)
         {
+            // draw an indicator for current source
+            if ( Mixer::manager().indexCurrentSource() == index ){
+
+                ImDrawList* draw_list = ImGui::GetWindowDrawList();
+                const ImVec2 p = ImGui::GetCursorScreenPos() + ImVec2(icon_width,0);
+                const ImU32 color = ImGui::GetColorU32( style.Colors[ImGuiCol_Text] );
+
+                draw_list->AddRect(p, ImVec2(p.x + 2.f, p.y + icon_width), color, 0.0f,  0, 3.f);
+
+            }
+            // draw select box
             if (ImGui::Selectable( (*iter)->initials(), &selected_button[index], 0, iconsize))
             {
                 toggle(index);
+                Mixer::manager().setCurrentSource(selected_source_index);
             }
         }
         // the "+" icon for action of creating new source
         if (ImGui::Selectable( ICON_FA_PLUS, &selected_button[NAV_NEW], 0, iconsize))
         {
+            Mixer::manager().unsetCurrentSource();
             toggle(NAV_NEW);
         }
         ImGui::PopStyleVar();
@@ -975,8 +988,6 @@ void SourceNavigator::Render()
     // window menu
     if (selected_button[NAV_MENU])
     {
-        Mixer::manager().unsetCurrentSource();
-
         // Next window is a side pannel
         ImGui::SetNextWindowPos( ImVec2(window_width, 0), ImGuiCond_Always );
         ImGui::SetNextWindowSize(ImVec2( 5.f * window_width, io.DisplaySize.y), ImGuiCond_Always );
@@ -993,7 +1004,7 @@ void SourceNavigator::Render()
             ImGuiToolkit::ButtonSwitch( IMGUI_TITLE_MEDIAPLAYER, &Settings::application.media_player);
             ImGuiToolkit::ButtonSwitch( IMGUI_TITLE_SHADEREDITOR, &Settings::application.shader_editor);
             ImGuiToolkit::ButtonSwitch( ICON_FA_TACHOMETER_ALT " Metrics", &Settings::application.stats);
-            ImGuiToolkit::ButtonSwitch( ICON_FA_LIST "  Logs", &Settings::application.logs);
+            ImGuiToolkit::ButtonSwitch( ICON_FA_LIST " Logs", &Settings::application.logs, "Ctrl + L");
 
             ImGui::Text("Appearance");
             ImGui::SetNextItemWidth(IMGUI_RIGHT_ALIGN);
@@ -1010,8 +1021,6 @@ void SourceNavigator::Render()
     // window to create a source
     else if (selected_button[NAV_NEW])
     {
-        Mixer::manager().unsetCurrentSource();
-
         // Next window is a side pannel
         ImGui::SetNextWindowPos( ImVec2(window_width, 0), ImGuiCond_Always );
         ImGui::SetNextWindowSize(ImVec2( 5.f * window_width, io.DisplaySize.y), ImGuiCond_Always );
@@ -1060,9 +1069,11 @@ void SourceNavigator::Render()
     // window to configure a selected source
     else if (selected_source_index > -1)
     {
-        static ImGuiVisitor v;
-        Mixer::manager().setCurrentSource(selected_source_index);
+        // manipulate current source, and activate corresponding button
         Source *s = Mixer::manager().currentSource();
+        clearSelection();
+        selected_button[Mixer::manager().indexCurrentSource()] = true;
+
         if (s)
         {
             // Next window is a side pannel
@@ -1083,6 +1094,7 @@ void SourceNavigator::Render()
                     Mixer::manager().renameSource(s, buf5);
                 }
                 // blending pannel
+                static ImGuiVisitor v;
                 s->blendingShader()->accept(v);
                 // preview
                 float width = ImGui::GetContentRegionAvail().x IMGUI_RIGHT_ALIGN;

UserInterfaceManager.h

@@ -5,14 +5,15 @@
 #include <list>
 using namespace std;
 
-#define NAV_MENU 0
-#define NAV_NEW 63
+#define NAV_COUNT 67
 #define NAV_MAX 64
+#define NAV_NEW 65
+#define NAV_MENU 66
 
 class SourceNavigator
 {
     int selected_source_index;
-    bool selected_button[NAV_MAX];
+    bool selected_button[NAV_COUNT];
     void clearSelection();
     void toggle(int index);