Added Take Screenshot option

Author: mziab

src/gui/gui.cc

@@ -1318,6 +1318,9 @@ void PCSX::GUI::endFrame() {
                 if (ImGui::MenuItem(_("Hard Reset"), "Shift+F8")) {
                     g_system->hardReset();
                 }
+                if (ImGui::MenuItem(_("Take Screenshot"))) {
+                    saveScreenShot();
+                }
                 ImGui::EndMenu();
             }
             ImGui::Separator();
@@ -2891,3 +2894,60 @@ void PCSX::GUI::changeScale(float scale) {
     m_allScales.emplace(scale);
     ImGui::SetCurrentFont(getMainFont());
 }
+
+clip::image PCSX::GUI::convertScreenshotToImage(PCSX::GPU::ScreenShot&& screenshot) {
+    clip::image_spec spec;
+    spec.width = screenshot.width;
+    spec.height = screenshot.height;
+    if (screenshot.bpp == PCSX::GPU::ScreenShot::BPP_16) {
+        spec.bits_per_pixel = 16;
+        spec.bytes_per_row = screenshot.width * 2;
+        spec.red_mask = 0x1f;  // 0x7c00;
+        spec.green_mask = 0x3e0;
+        spec.blue_mask = 0x7c00;  // 0x1f;
+        spec.alpha_mask = 0;
+        spec.red_shift = 0;  // 10;
+        spec.green_shift = 5;
+        spec.blue_shift = 10;  // 0;
+        spec.alpha_shift = 0;
+    } else {
+        spec.bits_per_pixel = 24;
+        spec.bytes_per_row = screenshot.width * 3;
+        spec.red_mask = 0xff0000;
+        spec.green_mask = 0xff00;
+        spec.blue_mask = 0xff;
+        spec.alpha_mask = 0;
+        spec.red_shift = 16;
+        spec.green_shift = 8;
+        spec.blue_shift = 0;
+        spec.alpha_shift = 0;
+    }
+    clip::image img(screenshot.data.data(), spec);
+    return img.to_rgba8888();
+}
+
+bool PCSX::GUI::writeImagePNG(std::string filename, clip::image&& img) { return img.export_to_png(filename); }
+
+std::string PCSX::GUI::getDateString() {
+    auto now = std::chrono::system_clock::now();
+    auto in_time_t = std::chrono::system_clock::to_time_t(now);
+
+    auto local_time = std::localtime(&in_time_t);
+
+    std::stringstream ss;
+    ss << std::put_time(local_time, "%Y-%m-%d-%H-%M-%S");
+
+    std::string datetime_string = ss.str();
+
+    return datetime_string;
+}
+
+bool PCSX::GUI::saveScreenShot() {
+    std::filesystem::path path =
+        g_system->getPersistentDir() / (getSaveStatePrefix(true) + getDateString() + ".png");
+    auto screenshot = g_emulator->m_gpu->takeScreenShot();
+    clip::image img = convertScreenshotToImage(std::move(screenshot));
+    bool success = writeImagePNG(path.string(), std::move(img));
+
+    return success;
+}

src/gui/gui.h

@@ -27,6 +27,8 @@
 #include <map>
 #include <set>
 #include <string>
+#include <sstream>
+#include <ctime>
 #include <string_view>
 #include <utility>
 #include <vector>
@@ -419,13 +421,17 @@ class GUI final : public UI {
     std::string buildSaveStateFilename(int i);
     std::string buildSaveStateFilename(std::string name);
     bool saveStateExists(std::filesystem::path filename);
+    bool saveScreenShot();
 
   private:
     void applyTheme(int theme);
     void cherryTheme();
     void monoTheme();
     void draculaTheme();
     void oliveTheme();
+    std::string getDateString();
+    clip::image convertScreenshotToImage(PCSX::GPU::ScreenShot&& screenshot);
+    bool writeImagePNG(std::string filename, clip::image&& img);
 
     Notifier m_notifier = {l_("Notification")};
     Widgets::Console m_luaConsole = {settings.get<ShowLuaConsole>().value};