[feat] add file transfer window to show file sending info

src/gui/windows/file_transfer_window.cpp

@@ -0,0 +1,169 @@
+#include <algorithm>
+#include <cmath>
+
+#include "IconsFontAwesome6.h"
+#include "layout.h"
+#include "localization.h"
+#include "rd_log.h"
+#include "render.h"
+
+namespace crossdesk {
+
+namespace {
+int CountDigits(int number) {
+  if (number == 0) return 1;
+  return (int)std::floor(std::log10(std::abs(number))) + 1;
+}
+
+int BitrateDisplay(int bitrate) {
+  int num_of_digits = CountDigits(bitrate);
+  if (num_of_digits <= 3) {
+    ImGui::Text("%d bps", bitrate);
+  } else if (num_of_digits > 3 && num_of_digits <= 6) {
+    ImGui::Text("%d kbps", bitrate / 1000);
+  } else {
+    ImGui::Text("%.1f mbps", bitrate / 1000000.0f);
+  }
+  return 0;
+}
+}  // namespace
+
+int Render::FileTransferWindow(
+    std::shared_ptr<SubStreamWindowProperties>& props) {
+  if (!props->file_transfer_window_visible_ &&
+      !props->file_transfer_completed_) {
+    return 0;
+  }
+
+  ImGuiIO& io = ImGui::GetIO();
+
+  // Position window at bottom-left of stream window
+  float window_width = 400.0f;
+  float window_height = 120.0f;
+  float pos_x = 10.0f;
+  float pos_y = 10.0f;
+
+  // Get stream window size and position
+  ImVec2 stream_window_size =
+      ImVec2(stream_window_width_, stream_window_height_);
+  if (fullscreen_button_pressed_) {
+    pos_y = stream_window_size.y - window_height - 10.0f;
+  } else {
+    pos_y = stream_window_size.y - window_height - 10.0f - title_bar_height_;
+  }
+
+  ImGui::SetNextWindowPos(ImVec2(pos_x, pos_y), ImGuiCond_Always);
+  ImGui::SetNextWindowSize(ImVec2(window_width, window_height),
+                           ImGuiCond_Always);
+
+  ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 5.0f);
+  ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 1.0f);
+  ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0.2f, 0.2f, 0.2f, 0.95f));
+  ImGui::PushStyleColor(ImGuiCol_Border, ImVec4(0.5f, 0.5f, 0.5f, 1.0f));
+  ImGui::PushStyleColor(ImGuiCol_TitleBg, ImVec4(0.3f, 0.3f, 0.3f, 1.0f));
+  ImGui::PushStyleColor(ImGuiCol_TitleBgActive, ImVec4(0.4f, 0.4f, 0.4f, 1.0f));
+
+  std::string window_title = "File Transfer";
+  bool window_opened = true;
+
+  if (ImGui::Begin("FileTransferWindow", &window_opened,
+                   ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoResize |
+                       ImGuiWindowFlags_NoMove |
+                       ImGuiWindowFlags_NoSavedSettings)) {
+    ImGui::PopStyleColor(4);
+    ImGui::PopStyleVar(2);
+
+    // Close button handling
+    if (!window_opened) {
+      props->file_transfer_window_visible_ = false;
+      props->file_transfer_completed_ = false;
+      ImGui::End();
+      return 0;
+    }
+
+    ImGui::SetWindowFontScale(0.6f);
+
+    bool is_sending = props->file_sending_.load();
+
+    if (props->file_transfer_completed_ && !is_sending) {
+      // Show completion message
+      ImGui::SetCursorPos(ImVec2(10, 30));
+      ImGui::TextColored(ImVec4(0.0f, 1.0f, 0.0f, 1.0f),
+                         "%s File transfer completed!", ICON_FA_CHECK);
+
+      std::string file_name;
+      {
+        std::lock_guard<std::mutex> lock(props->file_transfer_mutex_);
+        file_name = props->file_sending_name_;
+      }
+      if (!file_name.empty()) {
+        ImGui::SetCursorPos(ImVec2(10, 50));
+        ImGui::Text("File: %s", file_name.c_str());
+      }
+
+      ImGui::SetCursorPos(ImVec2(10, 70));
+      if (ImGui::Button("OK", ImVec2(80, 25))) {
+        props->file_transfer_completed_ = false;
+        props->file_transfer_window_visible_ = false;
+      }
+    } else if (is_sending) {
+      // Show transfer progress
+      uint64_t sent = props->file_sent_bytes_.load();
+      uint64_t total = props->file_total_bytes_.load();
+      float progress =
+          total > 0 ? static_cast<float>(sent) / static_cast<float>(total)
+                    : 0.0f;
+      progress = (std::max)(0.0f, (std::min)(1.0f, progress));
+
+      // File name
+      std::string file_name;
+      {
+        std::lock_guard<std::mutex> lock(props->file_transfer_mutex_);
+        file_name = props->file_sending_name_;
+      }
+      if (file_name.empty()) {
+        file_name = "Sending...";
+      }
+
+      ImGui::SetCursorPos(ImVec2(10, 30));
+      ImGui::Text("File: %s", file_name.c_str());
+
+      // Progress bar
+      ImGui::SetCursorPos(ImVec2(10, 50));
+      ImGui::ProgressBar(progress, ImVec2(window_width - 40, 0), "");
+      ImGui::SameLine(0, 5);
+      ImGui::Text("%.1f%%", progress * 100.0f);
+
+      // Transfer rate and size info
+      ImGui::SetCursorPos(ImVec2(10, 75));
+      uint32_t rate_bps = props->file_send_rate_bps_.load();
+      ImGui::Text("Speed: ");
+      ImGui::SameLine();
+      BitrateDisplay(static_cast<int>(rate_bps));
+
+      ImGui::SameLine(0, 20);
+      // Format size display
+      char size_str[64];
+      if (total < 1024) {
+        snprintf(size_str, sizeof(size_str), "%llu B",
+                 (unsigned long long)total);
+      } else if (total < 1024 * 1024) {
+        snprintf(size_str, sizeof(size_str), "%.2f KB", total / 1024.0f);
+      } else {
+        snprintf(size_str, sizeof(size_str), "%.2f MB",
+                 total / (1024.0f * 1024.0f));
+      }
+      ImGui::Text("Size: %s", size_str);
+    }
+
+    ImGui::SetWindowFontScale(1.0f);
+    ImGui::End();
+  } else {
+    ImGui::PopStyleColor(4);
+    ImGui::PopStyleVar(2);
+  }
+
+  return 0;
+}
+
+}  // namespace crossdesk