Change Player menu and new Frame inspector

Frame menu is active when a single source is selected. The Frame menu include actions to capture frame and to enable Frame Inspector. Frame inspector zooms on the image at cursor coordinate. Previous Control menu actions are back to main menu.

Settings.cpp

@@ -173,6 +173,7 @@ void Settings::Save(uint64_t runtime)
     SourceConfNode->SetAttribute("res", application.source.res);
     SourceConfNode->SetAttribute("capture_naming", application.source.capture_naming);
     SourceConfNode->SetAttribute("capture_path", application.source.capture_path.c_str());
+    SourceConfNode->SetAttribute("inspector_zoom", application.source.inspector_zoom);
     pRoot->InsertEndChild(SourceConfNode);
 
     // Brush
@@ -422,6 +423,7 @@ void Settings::Load()
             application.source.capture_path = std::string(path_);
         else
             application.source.capture_path = SystemToolkit::home_path();
+        sourceconfnode->QueryFloatAttribute("inspector_zoom", &application.source.inspector_zoom);
     }
 
     // Transition

Settings.h

@@ -169,12 +169,14 @@ struct SourceConfig
     int res;
     std::string capture_path;
     int capture_naming;
+    float inspector_zoom;
 
     SourceConfig() {
         new_type = 0;
         ratio = 3;
         res = 1;
         capture_naming = 0;
+        inspector_zoom = 8.f;
     }
 };
 

UserInterfaceManager.cpp

@@ -2235,25 +2235,27 @@ void SourceController::Update()
         Settings::application.source.capture_path = captureFolderDialog->path();
 
     //
-    // Capture frame on current source
+    // Capture frame on current selection
     //
-    Source *source = Mixer::manager().currentSource();
-    if (source != nullptr) {
+    Source *s = nullptr;
+    if ( selection_.size() == 1 )
+        s = selection_.front();
+    if ( s != nullptr) {
         // back from capture of FBO: can save file
         if ( capture.isFull() ){
             std::string filename;
             // if sequencial naming of file is selected
             if (Settings::application.source.capture_naming == 0 )
-                filename = SystemToolkit::filename_sequential(Settings::application.source.capture_path, source->name(), "png");
+                filename = SystemToolkit::filename_sequential(Settings::application.source.capture_path, s->name(), "png");
             else
-                filename = SystemToolkit::filename_dateprefix(Settings::application.source.capture_path, source->name(), "png");
+                filename = SystemToolkit::filename_dateprefix(Settings::application.source.capture_path, s->name(), "png");
             // save capture and inform user
             capture.save( filename );
             Log::Notify("Frame saved in %s", filename.c_str() );
         }
         // request capture : initiate capture of FBO
         if ( capture_request_ ) {
-            capture.captureFramebuffer(source->frame());
+            capture.captureFramebuffer( s->frame() );
             capture_request_ = false;
         }
     }
@@ -2300,6 +2302,15 @@ void SourceController::Render()
         }
         if (ImGui::BeginMenu(IMGUI_TITLE_MEDIAPLAYER))
         {
+            //
+            // Menu section for play control
+            //
+            if (ImGui::MenuItem( ICON_FA_FAST_BACKWARD "  Restart", CTRL_MOD "Space", nullptr, !selection_.empty()))
+                replay_request_ = true;
+            if (ImGui::MenuItem( ICON_FA_PLAY "  Play | Pause", "Space", nullptr, !selection_.empty()))
+                play_toggle_request_ = true;
+
+            ImGui::Separator();
             //
             // Menu section for display
             //
@@ -2346,25 +2357,57 @@ void SourceController::Render()
             ImGui::EndMenu();
         }
 
-        if (ImGui::BeginMenu(ICON_FA_PLAY "  Control"))
+        if (ImGui::BeginMenu(active_label_.c_str()))
         {
-            //
-            // Menu section for play control
-            //
-            if (ImGui::MenuItem( ICON_FA_FAST_BACKWARD "  Restart", CTRL_MOD "Space", nullptr, !selection_.empty()))
-                replay_request_ = true;
-            if (ImGui::MenuItem( ICON_FA_PLAY "  Play | Pause", "Space", nullptr, !selection_.empty()))
-                play_toggle_request_ = true;
+            // info on selection status
+            size_t N = Mixer::manager().session()->numPlayGroups();
+            bool enabled = !selection_.empty() && active_selection_ < 0;
 
+            // Menu : Dynamic selection
+            if (ImGui::MenuItem(LABEL_AUTO_MEDIA_PLAYER))
+                resetActiveSelection();
+            // Menu : store selection
+            if (ImGui::MenuItem(ICON_FA_PLUS_SQUARE LABEL_STORE_SELECTION, NULL, false, enabled))
+            {
+                active_selection_ = N;
+                active_label_ = std::string(ICON_FA_CHECK_SQUARE "  Selection #") + std::to_string(active_selection_);
+                Mixer::manager().session()->addPlayGroup( ids(playable_only(selection_)) );
+                info_.reset();
+            }
+            // Menu : list of selections
+            if (N>0) {
                 ImGui::Separator();
+                for (size_t i = 0 ; i < N; ++i)
+                {
+                    std::string label = std::string(ICON_FA_CHECK_SQUARE "  Selection #") + std::to_string(i);
+                    if (ImGui::MenuItem( label.c_str() ))
+                    {
+                        active_selection_ = i;
+                        active_label_ = label;
+                        info_.reset();
+                    }
+                }
+            }
+
+            ImGui::EndMenu();
+        }
+
         //
         // Menu for capture frame
         //
+        if ( ImGui::BeginMenu(ICON_FA_PHOTO_VIDEO "  Frame", selection_.size() == 1 ) )
+        {
+            bool inspect = Settings::application.source.inspector_zoom > 0.f;
+            if (ImGui::MenuItem( ICON_FA_SEARCH "  Inspector", NULL, &inspect ))
+                Settings::application.source.inspector_zoom = inspect ? 8.f : 0.f;
+
             ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(IMGUI_COLOR_CAPTURE, 0.8f));
-            if (ImGui::MenuItem( ICON_FA_CAMERA_RETRO " Capture frame", "F10", nullptr, Mixer::manager().currentSource() != nullptr ))
+            if (ImGui::MenuItem( MENU_CAPTUREFRAME, "F10" ))
                 capture_request_ = true;
             ImGui::PopStyleColor(1);
 
+            // separator and hack for extending menu width
+            ImGui::Separator();
             ImGui::MenuItem("Settings                            ", nullptr, false, false);
 
             // path menu selection
@@ -2410,43 +2453,10 @@ void SourceController::Render()
             ImGui::EndMenu();
         }
 
-        if (ImGui::BeginMenu(active_label_.c_str()))
-        {
-            // info on selection status
-            size_t N = Mixer::manager().session()->numPlayGroups();
-            bool enabled = !selection_.empty() && active_selection_ < 0;
-
-            // Menu : Dynamic selection
-            if (ImGui::MenuItem(LABEL_AUTO_MEDIA_PLAYER))
-                resetActiveSelection();
-            // Menu : store selection
-            if (ImGui::MenuItem(ICON_FA_PLUS_SQUARE LABEL_STORE_SELECTION, NULL, false, enabled))
-            {
-                active_selection_ = N;
-                active_label_ = std::string(ICON_FA_CHECK_SQUARE "  Selection #") + std::to_string(active_selection_);
-                Mixer::manager().session()->addPlayGroup( ids(playable_only(selection_)) );
-                info_.reset();
-            }
-            // Menu : list of selections
-            if (N>0) {
-                ImGui::Separator();
-                for (size_t i = 0 ; i < N; ++i)
-                {
-                    std::string label = std::string(ICON_FA_CHECK_SQUARE "  Selection #") + std::to_string(i);
-                    if (ImGui::MenuItem( label.c_str() ))
-                    {
-                        active_selection_ = i;
-                        active_label_ = label;
-                        info_.reset();
-                    }
-                }
-            }
-
-            ImGui::EndMenu();
-        }
-
-        if (mediaplayer_active_) {
-            if (ImGui::BeginMenu(ICON_FA_FILM " Video") )
+        //
+        // Menu for video Mediaplayer control
+        //
+        if (ImGui::BeginMenu(ICON_FA_FILM " Video", mediaplayer_active_) )
         {
             if (ImGui::MenuItem(ICON_FA_WINDOW_CLOSE "  Reset timeline")){
                 mediaplayer_timeline_zoom_ = 1.f;
@@ -2503,11 +2513,6 @@ void SourceController::Render()
 
             ImGui::EndMenu();
         }
-        }
-        else {
-            ImGui::SameLine(0, 2.f * g.Style.ItemSpacing.x );
-            ImGui::TextDisabled(ICON_FA_FILM " Video");
-        }
 
         ImGui::EndMenuBar();
     }
@@ -3015,6 +3020,43 @@ bool SourceController::SourceButton(Source *s, ImVec2 framesize)
     return ret;
 }
 
+void DrawInspector(uint texture, ImVec2 texturesize, ImVec2 origin)
+{
+    if (Settings::application.source.inspector_zoom > 0 && ImGui::IsWindowFocused())
+    {
+        // region size is computed with zoom factor from settings
+        float region_sz = texturesize.x / Settings::application.source.inspector_zoom;
+
+        // get coordinates of area to zoom at mouse position
+        const ImGuiIO& io = ImGui::GetIO();
+        float region_x = io.MousePos.x - origin.x - region_sz * 0.5f;
+        if (region_x < 0.f)
+            region_x = 0.f;
+        else if (region_x > texturesize.x - region_sz)
+            region_x = texturesize.x - region_sz;
+
+        float region_y = io.MousePos.y - origin.y - region_sz * 0.5f;
+        if (region_y < 0.f)
+            region_y = 0.f;
+        else if (region_y > texturesize.y - region_sz)
+            region_y = texturesize.y - region_sz;
+
+        // Tooltip without border and 100% opaque
+        ImGui::PushStyleVar(ImGuiStyleVar_Alpha, 1.f);
+        ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.f);
+        ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.f, 0.f) );
+        ImGui::BeginTooltip();
+
+        // compute UV and display image in tooltip
+        ImVec2 uv0 = ImVec2((region_x) / texturesize.x, (region_y) / texturesize.y);
+        ImVec2 uv1 = ImVec2((region_x + region_sz) / texturesize.x, (region_y + region_sz) / texturesize.y);
+        ImGui::Image((void*)(intptr_t)texture, ImVec2(texturesize.x / 3.f, texturesize.x / 3.f), uv0, uv1, ImVec4(1.0f, 1.0f, 1.0f, 1.0f), ImVec4(1.0f, 1.0f, 1.0f, 0.5f));
+
+        ImGui::EndTooltip();
+        ImGui::PopStyleVar(3);
+    }
+}
+
 ImRect DrawSourceWithSlider(Source *s, ImVec2 top, ImVec2 rendersize)
 {
     ImDrawList* draw_list = ImGui::GetWindowDrawList();
@@ -3049,6 +3091,8 @@ ImRect DrawSourceWithSlider(Source *s, ImVec2 top, ImVec2 rendersize)
         //
         ImVec2 slider = framesize * ImVec2(Settings::application.widget.media_player_slider,1.f);
         ImGui::Image((void*)(uintptr_t) s->texture(), slider, ImVec2(0.f,0.f), ImVec2(Settings::application.widget.media_player_slider,1.f));
+        if ( ImGui::IsItemHovered() )
+            DrawInspector(s->texture(), framesize, top_image);
 
         //
         // RIGHT of slider : post-processed image (after crop and color correction)
@@ -3060,6 +3104,8 @@ ImRect DrawSourceWithSlider(Source *s, ImVec2 top, ImVec2 rendersize)
             // draw cropped area
             ImGui::SetCursorScreenPos(top_image + croptop );
             ImGui::Image((void*)(uintptr_t) s->frame()->texture(), cropsize, ImVec2(0.f, 0.f), ImVec2(1.f,1.f));
+            if ( ImGui::IsItemHovered() )
+                DrawInspector(s->frame()->texture(), framesize, top_image);
         }
         // overlap of slider with cropped area (horizontally)
         else if (slider.x < croptop.x + cropsize.x ) {
@@ -3071,6 +3117,8 @@ ImRect DrawSourceWithSlider(Source *s, ImVec2 top, ImVec2 rendersize)
             // size is reduced by slider
             cropsize = cropsize * ImVec2(1.f -cropped_slider, 1.f);
             ImGui::Image((void*)(uintptr_t) s->frame()->texture(), cropsize, ImVec2(cropped_slider, 0.f), ImVec2(1.f,1.f));
+            if ( ImGui::IsItemHovered() )
+                DrawInspector(s->frame()->texture(), framesize, top_image);
         }
         // else : no render of cropped area
 
@@ -3090,6 +3138,8 @@ ImRect DrawSourceWithSlider(Source *s, ImVec2 top, ImVec2 rendersize)
     }
     else {
         ImGui::Image((void*)(uintptr_t) s->texture(), framesize);
+        if ( ImGui::IsItemHovered() )
+            DrawInspector(s->texture(), framesize, top_image);
     }
 
     return ImRect( top_image, top_image + framesize);