Add imgui-based Netplay Chat

Source/Core/DolphinQt/Host.cpp

@@ -8,6 +8,8 @@
 #include <QApplication>
 #include <QProgressDialog>
 
+#include <imgui.h>
+
 #include "Common/Common.h"
 
 #include "Core/ConfigManager.h"
@@ -149,7 +151,8 @@ void Host_RequestRenderWindowSize(int w, int h)
 
 bool Host_UINeedsControllerState()
 {
-  return Settings::Instance().IsControllerStateNeeded();
+  return Settings::Instance().IsControllerStateNeeded() ||
+         (ImGui::GetCurrentContext() && ImGui::GetIO().WantCaptureKeyboard);
 }
 
 bool Host_UIBlocksControllerState()

Source/Core/DolphinQt/NetPlay/NetPlayDialog.cpp

@@ -54,6 +54,8 @@
 #include "UICommon/GameFile.h"
 #include "UICommon/UICommon.h"
 
+#include "VideoCommon/NetPlayChatUI.h"
+#include "VideoCommon/RenderBase.h"
 #include "VideoCommon/VideoConfig.h"
 
 NetPlayDialog::NetPlayDialog(QWidget* parent)
@@ -355,6 +357,15 @@ void NetPlayDialog::ConnectWidgets()
   connect(m_sync_all_wii_saves_action, &QAction::toggled, this, &NetPlayDialog::SaveSettings);
 }
 
+void NetPlayDialog::SendMessage(const std::string& msg)
+{
+  Settings::Instance().GetNetPlayClient()->SendChatMessage(msg);
+
+  DisplayMessage(QStringLiteral("%1: %2").arg(QString::fromStdString(m_nickname).toHtmlEscaped(),
+                                              QString::fromStdString(msg).toHtmlEscaped()),
+                 "#1d6ed8");
+}
+
 void NetPlayDialog::OnChat()
 {
   QueueOnObject(this, [this] {
@@ -363,12 +374,9 @@ void NetPlayDialog::OnChat()
     if (msg.empty())
       return;
 
-    Settings::Instance().GetNetPlayClient()->SendChatMessage(msg);
     m_chat_type_edit->clear();
 
-    DisplayMessage(QStringLiteral("%1: %2").arg(QString::fromStdString(m_nickname).toHtmlEscaped(),
-                                                QString::fromStdString(msg).toHtmlEscaped()),
-                   "#1d6ed8");
+    SendMessage(msg);
   });
 }
 
@@ -762,23 +770,12 @@ void NetPlayDialog::DisplayMessage(const QString& msg, const std::string& color,
         QStringLiteral("<font color='%1'>%2</font>").arg(QString::fromStdString(color), msg));
   });
 
-  if (g_ActiveConfig.bShowNetPlayMessages && Core::IsRunning())
-  {
-    u32 osd_color;
-
-    // Convert the color string to a OSD color
-    if (color == "red")
-      osd_color = OSD::Color::RED;
-    else if (color == "cyan")
-      osd_color = OSD::Color::CYAN;
-    else if (color == "green")
-      osd_color = OSD::Color::GREEN;
-    else
-      osd_color = OSD::Color::YELLOW;
+  QColor c(QString::fromStdString(color));
 
-    OSD::AddTypedMessage(OSD::MessageType::NetPlayBuffer, msg.toStdString(), OSD::Duration::NORMAL,
-                         osd_color);
-  }
+  if (g_ActiveConfig.bShowNetPlayMessages && Core::IsRunning())
+    g_renderer->GetNetPlayChatUI()->AppendChat(msg.toStdString(), {static_cast<float>(c.redF()),
+                                                                   static_cast<float>(c.greenF()),
+                                                                   static_cast<float>(c.blueF())});
 }
 
 void NetPlayDialog::AppendChat(const std::string& msg)
@@ -827,8 +824,12 @@ void NetPlayDialog::OnMsgStartGame()
 {
   DisplayMessage(tr("Started game"), "green");
 
+  g_renderer->GetNetPlayChatUI() =
+      std::make_unique<NetPlayChatUI>([this](const std::string& message) { SendMessage(message); });
+
   QueueOnObject(this, [this] {
     auto client = Settings::Instance().GetNetPlayClient();
+
     if (client)
       client->StartGame(FindGame(m_current_game));
     UpdateDiscordPresence();
@@ -837,6 +838,7 @@ void NetPlayDialog::OnMsgStartGame()
 
 void NetPlayDialog::OnMsgStopGame()
 {
+  g_renderer->GetNetPlayChatUI().reset();
   QueueOnObject(this, [this] { UpdateDiscordPresence(); });
 }
 
@@ -856,7 +858,7 @@ void NetPlayDialog::OnPadBufferChanged(u32 buffer)
   DisplayMessage(m_host_input_authority && !IsHosting() ?
                      tr("Max buffer size changed to %1").arg(buffer) :
                      tr("Buffer size changed to %1").arg(buffer),
-                 "");
+                 "yellow");
 
   m_buffer_size = static_cast<int>(buffer);
 }

Source/Core/DolphinQt/NetPlay/NetPlayDialog.h

@@ -95,6 +95,8 @@ class NetPlayDialog : public QDialog, public NetPlay::NetPlayUI
 
   void SetGame(const QString& game_path);
 
+  void SendMessage(const std::string& message);
+
   // Chat
   QGroupBox* m_chat_box;
   QTextEdit* m_chat_edit;

Source/Core/DolphinQt/Settings.cpp

@@ -27,6 +27,9 @@
 #include "InputCommon/ControllerInterface/ControllerInterface.h"
 #include "InputCommon/InputConfig.h"
 
+#include "VideoCommon/NetPlayChatUI.h"
+#include "VideoCommon/RenderBase.h"
+
 Settings::Settings()
 {
   qRegisterMetaType<Core::State>();
@@ -293,6 +296,7 @@ std::shared_ptr<NetPlay::NetPlayClient> Settings::GetNetPlayClient()
 void Settings::ResetNetPlayClient(NetPlay::NetPlayClient* client)
 {
   m_client.reset(client);
+  g_renderer->GetNetPlayChatUI().reset();
 }
 
 std::shared_ptr<NetPlay::NetPlayServer> Settings::GetNetPlayServer()

Source/Core/VideoCommon/CMakeLists.txt

@@ -22,6 +22,7 @@ add_library(videocommon
   ImageWrite.cpp
   IndexGenerator.cpp
   LightingShaderGen.cpp
+  NetPlayChatUI.cpp
   OnScreenDisplay.cpp
   OpcodeDecoding.cpp
   PerfQueryBase.cpp

Source/Core/VideoCommon/NetPlayChatUI.cpp

@@ -0,0 +1,97 @@
+// Copyright 2019 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "VideoCommon/NetPlayChatUI.h"
+
+#include <imgui.h>
+
+constexpr float DEFAULT_WINDOW_WIDTH = 220.0f;
+constexpr float DEFAULT_WINDOW_HEIGHT = 400.0f;
+
+constexpr size_t MAX_BACKLOG_SIZE = 100;
+
+NetPlayChatUI::NetPlayChatUI(std::function<void(const std::string&)> callback)
+{
+  m_message_callback = std::move(callback);
+}
+
+void NetPlayChatUI::Display()
+{
+  const float scale = ImGui::GetIO().DisplayFramebufferScale.x;
+
+  ImGui::SetNextWindowPos(ImVec2(10.0f * scale, 10.0f * scale), ImGuiCond_FirstUseEver);
+  ImGui::SetNextWindowSizeConstraints(
+      ImVec2(DEFAULT_WINDOW_WIDTH * scale, DEFAULT_WINDOW_HEIGHT * scale),
+      ImGui::GetIO().DisplaySize);
+
+  if (!ImGui::Begin("Chat", nullptr, ImGuiWindowFlags_None))
+  {
+    ImGui::End();
+    return;
+  }
+
+  ImGui::BeginChild("Scrolling", ImVec2(0, -30 * scale), true, ImGuiWindowFlags_None);
+  for (const auto& msg : m_messages)
+  {
+    auto c = msg.second;
+    ImGui::PushTextWrapPos(0.0f);
+    ImGui::TextColored(ImVec4(c[0], c[1], c[2], 1.0f), "%s", msg.first.c_str());
+    ImGui::PopTextWrapPos();
+  }
+
+  if (m_scroll_to_bottom)
+  {
+    ImGui::SetScrollHere(1.0f);
+    m_scroll_to_bottom = false;
+  }
+
+  m_is_scrolled_to_bottom = ImGui::GetScrollY() == ImGui::GetScrollMaxY();
+
+  ImGui::EndChild();
+
+  ImGui::Spacing();
+
+  ImGui::PushItemWidth(-50.0f * scale);
+
+  if (ImGui::InputText("", m_message_buf, IM_ARRAYSIZE(m_message_buf),
+                       ImGuiInputTextFlags_EnterReturnsTrue))
+  {
+    SendMessage();
+    ImGui::SetKeyboardFocusHere(-1);
+  }
+
+  ImGui::PopItemWidth();
+
+  ImGui::SameLine();
+
+  if (ImGui::Button("Send"))
+    SendMessage();
+
+  ImGui::End();
+}
+
+void NetPlayChatUI::AppendChat(const std::string& message, NetPlayChatUI::Color color)
+{
+  if (m_messages.size() > MAX_BACKLOG_SIZE)
+    m_messages.pop_front();
+
+  m_messages.push_back({message, color});
+
+  // Only scroll to bottom, if we were at the bottom previously
+  if (m_is_scrolled_to_bottom)
+    m_scroll_to_bottom = true;
+}
+
+void NetPlayChatUI::SendMessage()
+{
+  // Check whether the input field is empty
+  if (m_message_buf[0] != '\0')
+  {
+    if (m_message_callback)
+      m_message_callback(m_message_buf);
+
+    // 'Empty' the buffer
+    m_message_buf[0] = '\0';
+  }
+}

Source/Core/VideoCommon/NetPlayChatUI.h

@@ -0,0 +1,33 @@
+// Copyright 2019 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <deque>
+#include <functional>
+#include <memory>
+#include <string>
+#include <utility>
+
+class NetPlayChatUI
+{
+public:
+  explicit NetPlayChatUI(std::function<void(const std::string&)> callback);
+  ~NetPlayChatUI() = default;
+
+  using Color = std::array<float, 3>;
+
+  void Display();
+  void AppendChat(const std::string& message, Color color);
+  void SendMessage();
+
+private:
+  char m_message_buf[256] = {};
+  bool m_scroll_to_bottom = false;
+  bool m_is_scrolled_to_bottom = true;
+
+  std::deque<std::pair<std::string, Color>> m_messages;
+  std::function<void(const std::string&)> m_message_callback;
+};

Source/Core/VideoCommon/RenderBase.cpp

@@ -57,6 +57,7 @@
 #include "VideoCommon/FPSCounter.h"
 #include "VideoCommon/FramebufferManager.h"
 #include "VideoCommon/ImageWrite.h"
+#include "VideoCommon/NetPlayChatUI.h"
 #include "VideoCommon/OnScreenDisplay.h"
 #include "VideoCommon/PixelEngine.h"
 #include "VideoCommon/PixelShaderManager.h"
@@ -523,6 +524,9 @@ void Renderer::DrawDebugText()
   if (g_ActiveConfig.bOverlayStats)
     Statistics::Display();
 
+  if (g_ActiveConfig.bShowNetPlayMessages && m_netplay_chat_ui)
+    m_netplay_chat_ui->Display();
+
   if (g_ActiveConfig.bOverlayProjStats)
     Statistics::DisplayProj();
 }
@@ -1642,3 +1646,8 @@ std::unique_ptr<VideoCommon::AsyncShaderCompiler> Renderer::CreateAsyncShaderCom
 {
   return std::make_unique<VideoCommon::AsyncShaderCompiler>();
 }
+
+std::unique_ptr<NetPlayChatUI>& Renderer::GetNetPlayChatUI()
+{
+  return m_netplay_chat_ui;
+}

Source/Core/VideoCommon/RenderBase.h

@@ -41,6 +41,7 @@ class AbstractShader;
 class AbstractTexture;
 class AbstractStagingTexture;
 class NativeVertexFormat;
+class NetPlayChatUI;
 struct TextureConfig;
 struct ComputePipelineConfig;
 struct AbstractPipelineConfig;
@@ -242,6 +243,8 @@ class Renderer
   void BeginUIFrame();
   void EndUIFrame();
 
+  std::unique_ptr<NetPlayChatUI>& GetNetPlayChatUI();
+
 protected:
   // Bitmask containing information about which configuration has changed for the backend.
   enum ConfigChangeBits : u32
@@ -384,6 +387,8 @@ class Renderer
 
   // Ensures all encoded frames have been written to the output file.
   void FinishFrameData();
+
+  std::unique_ptr<NetPlayChatUI> m_netplay_chat_ui;
 };
 
 extern std::unique_ptr<Renderer> g_renderer;

Source/Core/VideoCommon/VideoCommon.vcxproj

@@ -57,6 +57,7 @@
     <ClCompile Include="HiresTextures_DDSLoader.cpp" />
     <ClCompile Include="ImageWrite.cpp" />
     <ClCompile Include="IndexGenerator.cpp" />
+    <ClCompile Include="NetPlayChatUI.cpp" />
     <ClCompile Include="OnScreenDisplay.cpp" />
     <ClCompile Include="OpcodeDecoding.cpp" />
     <ClCompile Include="PerfQueryBase.cpp" />
@@ -120,6 +121,7 @@
     <ClInclude Include="FramebufferManager.h" />
     <ClInclude Include="FramebufferShaderGen.h" />
     <ClInclude Include="GXPipelineTypes.h" />
+    <ClInclude Include="NetPlayChatUI.h" />
     <ClInclude Include="ShaderCache.h" />
     <ClInclude Include="UberShaderCommon.h" />
     <ClInclude Include="UberShaderPixel.h" />

Source/Core/VideoCommon/VideoCommon.vcxproj.filters

@@ -197,6 +197,9 @@
     <ClCompile Include="FramebufferManager.cpp">
       <Filter>Base</Filter>
     </ClCompile>
+    <ClCompile Include="NetPlayChatUI.cpp">
+      <Filter>Util</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="CommandProcessor.h" />
@@ -386,6 +389,9 @@
     <ClInclude Include="TextureConverterShaderGen.h">
       <Filter>Shader Generators</Filter>
     </ClInclude>
+    <ClInclude Include="NetPlayChatUI.h">
+      <Filter>Util</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Text Include="CMakeLists.txt" />