Temporary add --low-cpu-mode to reduce cpu usage when idle

1 files changed, 50 insertions, 7 deletions

diff --git a/src/QuickMedia.cpp b/src/QuickMedia.cpp
index 9f8c7bd..3e1e61a 100644
--- a/src/QuickMedia.cpp
+++ b/src/QuickMedia.cpp
@@ -50,6 +50,8 @@ static const float tab_text_size = 16.0f;
 static const float tab_height = tab_text_size + 10.0f;
 static const sf::Color tab_selected_color(55, 60, 68);
 static const float tab_margin_x = 10.0f;
+static int FPS_IDLE = 2;
+static const double IDLE_TIMEOUT_SEC = 2.0;
 
 // Prevent writing to broken pipe from exiting the program
 static void sigpipe_handler(int) {
@@ -409,10 +411,11 @@ namespace QuickMedia {
         XSetErrorHandler(x_error_handler);
         XSetIOErrorHandler(x_io_error_handler);
 
-        window.setFramerateLimit(0);
+        window.setVerticalSyncEnabled(false);
         monitor_hz = get_monitor_max_hz(disp);
-        window.setVerticalSyncEnabled(true);
-        vsync_set = true;
+        window.setFramerateLimit(FPS_IDLE);
+        idle = true;
+        vsync_set = false;
         /*
         if(enable_vsync(disp, window.getSystemHandle())) {
             vsync_set = true;
@@ -535,6 +538,8 @@ namespace QuickMedia {
                     usage();
                     return -1;
                 }
+            } else if(strcmp(argv[i], "--low-cpu-mode") == 0) {
+                low_cpu_mode = true;
             } else if(argv[i][0] == '-') {
                 fprintf(stderr, "Invalid option %s\n", argv[i]);
                 usage();
@@ -542,6 +547,11 @@ namespace QuickMedia {
             }
         }
 
+        if(low_cpu_mode)
+            FPS_IDLE = 2;
+        else
+            FPS_IDLE = 20;
+
         if(!plugin_name) {
             fprintf(stderr, "Missing plugin argument\n");
             usage();
@@ -736,6 +746,25 @@ namespace QuickMedia {
         }
     }
 
+    void Program::event_idle_handler(const sf::Event &event) {
+        if(event.type == sf::Event::KeyPressed || event.type == sf::Event::TextEntered) {
+            if(idle)
+                window.setFramerateLimit(monitor_hz);
+            idle = false;
+            idle_timer.restart();
+        }
+    }
+
+    void Program::update_idle_state() {
+        if(idle)
+            return;
+
+        if(idle_timer.getElapsedTime().asSeconds() > IDLE_TIMEOUT_SEC) {
+            window.setFramerateLimit(FPS_IDLE);
+            idle = true;
+        }
+    }
+
     static std::string base64_encode(const std::string &data) {
         return base64_url::encode(data);
     }
@@ -1029,6 +1058,9 @@ namespace QuickMedia {
             return;
         }
 
+        window.setFramerateLimit(FPS_IDLE);
+        idle = true;
+
         for(Tab &tab : tabs) {
             tab.body->thumbnail_max_size = tab.page->get_thumbnail_max_size();
             tab.page->on_navigate_to_page(tab.body.get());
@@ -1131,10 +1163,8 @@ namespace QuickMedia {
                                 manga_images_page->change_chapter(chapters_body->get_selected()->get_title(), chapters_body->get_selected()->url);
                             }
                         }
-                        if(vsync_set)
-                            window.setFramerateLimit(0);
-                        else
-                            window.setFramerateLimit(monitor_hz);
+                        window.setFramerateLimit(FPS_IDLE);
+                        idle = true;
                     } else if(current_page == PageType::IMAGES_CONTINUOUS) {
                         image_continuous_page(manga_images_page);
                     } else {
@@ -1217,6 +1247,7 @@ namespace QuickMedia {
         while (window.isOpen() && loop_running) {
             sf::Int32 frame_time_ms = frame_timer.restart().asMilliseconds();
             while (window.pollEvent(event)) {
+                event_idle_handler(event);
                 if (event.type == sf::Event::Closed) {
                     window.close();
                 } else if(event.type == sf::Event::Resized) {
@@ -1310,6 +1341,7 @@ namespace QuickMedia {
                     }
                 }
             }
+            update_idle_state();
 
             if(redraw) {
                 redraw = false;
@@ -2479,6 +2511,8 @@ namespace QuickMedia {
             show_notification("QuickMedia", "Failed to save manga progress", Urgency::CRITICAL);
         }
 
+        window.setFramerateLimit(monitor_hz);
+
         while(current_page == PageType::IMAGES_CONTINUOUS && window.isOpen()) {
             window.clear(back_color);
             ImageViewerAction action = image_viewer.draw(window);
@@ -2520,6 +2554,9 @@ namespace QuickMedia {
 
         window_size.x = window.getSize().x;
         window_size.y = window.getSize().y;
+
+        window.setFramerateLimit(FPS_IDLE);
+        idle = true;
     }
 
     static bool is_url_video(const std::string &url) {
@@ -2693,6 +2730,7 @@ namespace QuickMedia {
 
         while (current_page == PageType::IMAGE_BOARD_THREAD && window.isOpen()) {
             while (window.pollEvent(event)) {
+                event_idle_handler(event);
                 if(navigation_stage == NavigationStage::REPLYING && !frame_skip_text_entry) {
                     comment_input.process_event(event);
                     // To prevent pressing enter in comment_input text submit from also immediately sending captcha solution.. is there no better solution?
@@ -2868,6 +2906,7 @@ namespace QuickMedia {
                 }
             }
             frame_skip_text_entry = false;
+            update_idle_state();
 
             chat_input_height_full = comment_input.get_height() + chat_input_padding_y * 2.0f;
 
@@ -3053,6 +3092,7 @@ namespace QuickMedia {
 
         while (current_page == PageType::CHAT_LOGIN && window.isOpen()) {
             while (window.pollEvent(event)) {
+                event_idle_handler(event);
                 if (event.type == sf::Event::Closed) {
                     current_page = PageType::EXIT;
                     window.close();
@@ -3073,6 +3113,7 @@ namespace QuickMedia {
                 }
                 inputs[focused_input]->on_event(event);
             }
+            update_idle_state();
 
             if(redraw) {
                 redraw = false;
@@ -4225,6 +4266,7 @@ namespace QuickMedia {
             sf::Int32 frame_time_ms = frame_timer.restart().asMilliseconds();
             while (window.pollEvent(event)) {
                 base_event_handler(event, PageType::EXIT, tabs[selected_tab].body.get(), nullptr, false, false);
+                event_idle_handler(event);
 
                 if(event.type == sf::Event::KeyPressed && event.key.control && event.key.alt && (chat_state == ChatState::NAVIGATING || chat_state == ChatState::URL_SELECTION)) {
                     if(event.key.code == sf::Keyboard::Up || (event.key.control && event.key.code == sf::Keyboard::K)) {
@@ -4496,6 +4538,7 @@ namespace QuickMedia {
                 }
             }
             frame_skip_text_entry = false;
+            update_idle_state();
 
             matrix_chat_page->update();