forked from dolphin-emu/dolphin
129 lines
3.9 KiB
C++
129 lines
3.9 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <list>
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#include <map>
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#include <mutex>
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#include <string>
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#include "imgui.h"
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#include "Common/CommonTypes.h"
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#include "Common/Timer.h"
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#include "Core/ConfigManager.h"
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#include "VideoCommon/OnScreenDisplay.h"
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namespace OSD
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{
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constexpr float LEFT_MARGIN = 10.0f; // Pixels to the left of OSD messages.
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constexpr float TOP_MARGIN = 10.0f; // Pixels above the first OSD message.
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constexpr float WINDOW_PADDING = 4.0f; // Pixels between subsequent OSD messages.
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struct Message
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{
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Message() {}
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Message(const std::string& text_, u32 timestamp_, u32 color_)
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: text(text_), timestamp(timestamp_), color(color_)
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{
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}
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std::string text;
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u32 timestamp;
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u32 color;
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};
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static std::multimap<MessageType, Message> s_messages;
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static std::mutex s_messages_mutex;
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static ImVec4 RGBAToImVec4(const u32 rgba)
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{
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return ImVec4(static_cast<float>((rgba >> 16) & 0xFF) / 255.0f,
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static_cast<float>((rgba >> 8) & 0xFF) / 255.0f,
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static_cast<float>((rgba >> 0) & 0xFF) / 255.0f,
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static_cast<float>((rgba >> 24) & 0xFF) / 255.0f);
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}
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static float DrawMessage(int index, const Message& msg, const ImVec2& position, int time_left)
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{
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// We have to provide a window name, and these shouldn't be duplicated.
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// So instead, we generate a name based on the number of messages drawn.
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const std::string window_name = StringFromFormat("osd_%d", index);
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// The size must be reset, otherwise the length of old messages could influence new ones.
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ImGui::SetNextWindowPos(position);
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ImGui::SetNextWindowSize(ImVec2(0.0f, 0.0f));
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// Gradually fade old messages away.
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const float alpha = std::min(1.0f, std::max(0.0f, time_left / 1024.0f));
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ImGui::PushStyleVar(ImGuiStyleVar_Alpha, alpha);
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float window_height = 0.0f;
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if (ImGui::Begin(window_name.c_str(), nullptr,
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ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoInputs |
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ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoSavedSettings |
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ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoNav |
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ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoFocusOnAppearing))
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{
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// Use %s in case message contains %.
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ImGui::TextColored(RGBAToImVec4(msg.color), "%s", msg.text.c_str());
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window_height =
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ImGui::GetWindowSize().y + (WINDOW_PADDING * ImGui::GetIO().DisplayFramebufferScale.y);
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}
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ImGui::End();
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ImGui::PopStyleVar();
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return window_height;
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}
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void AddTypedMessage(MessageType type, const std::string& message, u32 ms, u32 rgba)
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{
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std::lock_guard<std::mutex> lock(s_messages_mutex);
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s_messages.erase(type);
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s_messages.emplace(type, Message(message, Common::Timer::GetTimeMs() + ms, rgba));
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}
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void AddMessage(const std::string& message, u32 ms, u32 rgba)
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{
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std::lock_guard<std::mutex> lock(s_messages_mutex);
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s_messages.emplace(MessageType::Typeless,
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Message(message, Common::Timer::GetTimeMs() + ms, rgba));
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}
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void DrawMessages()
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{
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if (!SConfig::GetInstance().bOnScreenDisplayMessages)
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return;
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{
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std::lock_guard<std::mutex> lock(s_messages_mutex);
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const u32 now = Common::Timer::GetTimeMs();
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float current_x = LEFT_MARGIN * ImGui::GetIO().DisplayFramebufferScale.x;
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float current_y = TOP_MARGIN * ImGui::GetIO().DisplayFramebufferScale.y;
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int index = 0;
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auto it = s_messages.begin();
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while (it != s_messages.end())
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{
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const Message& msg = it->second;
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const int time_left = static_cast<int>(msg.timestamp - now);
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current_y += DrawMessage(index++, msg, ImVec2(current_x, current_y), time_left);
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if (time_left <= 0)
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it = s_messages.erase(it);
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else
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++it;
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}
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}
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}
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void ClearMessages()
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{
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std::lock_guard<std::mutex> lock(s_messages_mutex);
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s_messages.clear();
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}
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}
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