#pragma once
#include <GLFW/glfw3.h>
#include <GL/gl.h>
#include "imgui/imgui.h"
#include "imgui/imgui_impl_glfw.h"
#include "imgui/imgui_impl_opengl3.h"
#include "Font.hpp"
class Overlay {
private:
GLFWwindow* overlayWindow = nullptr;
const GLFWvidmode* vidMode = nullptr;
int screenPosX;
int screenPosY;
int screenWidth;
int screenHeight;
void GrabScreenSize() {
GLFWmonitor* primaryMonitor = glfwGetPrimaryMonitor();
vidMode = glfwGetVideoMode(primaryMonitor);
glfwGetMonitorPos(primaryMonitor, &screenPosX, &screenPosY);
screenWidth = vidMode->width;
screenHeight = vidMode->height;
}
static void glfwErrorCallback(int error, const char* description) {
fprintf(stderr, "GLFW error %d: %s\n", error, description);
}
static ImWchar* GetFontGlyphRanges() noexcept {
static ImVector<ImWchar> ranges;
if (ranges.empty()) {
ImFontGlyphRangesBuilder builder;
constexpr ImWchar baseRanges[] = {
0x0100, 0x024F, // Latin Extended-A + Latin Extended-B
0x0300, 0x03FF, // Combining Diacritical Marks + Greek/Coptic
0x0600, 0x06FF, // Arabic
0x0E00, 0x0E7F, // Thai
0 };
builder.AddRanges(baseRanges);
builder.AddRanges(ImGui::GetIO().Fonts->GetGlyphRangesCyrillic());
builder.AddRanges(ImGui::GetIO().Fonts->GetGlyphRangesDefault());
builder.AddRanges(ImGui::GetIO().Fonts->GetGlyphRangesJapanese());
builder.AddRanges(ImGui::GetIO().Fonts->GetGlyphRangesChineseSimplifiedCommon());
// ★龍王™
builder.AddChar(u'\u2605'); // ★
builder.AddChar(u'\u9F8D'); // 龍
builder.AddChar(u'\u738B'); // 王
builder.AddChar(u'\u2122'); // ™
builder.BuildRanges(&ranges);
}
return ranges.Data;
}
public:
bool InitializeOverlay(const char* overlayTitle) {
glfwSetErrorCallback(glfwErrorCallback);
if (!glfwInit()) {
return false;
}
GrabScreenSize();
glfwDefaultWindowHints();
glfwWindowHint(GLFW_DECORATED, GLFW_FALSE);
glfwWindowHint(GLFW_FLOATING, GLFW_TRUE);
glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
glfwWindowHint(GLFW_FOCUS_ON_SHOW, GLFW_FALSE);
glfwWindowHint(GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_TRUE);
glfwWindowHint(GLFW_MOUSE_PASSTHROUGH, GLFW_TRUE);
glfwWindowHint(GLFW_VISIBLE, GLFW_TRUE);
glfwWindowHint(GLFW_REFRESH_RATE, GLFW_DONT_CARE);
overlayWindow = glfwCreateWindow(screenWidth, screenHeight, overlayTitle, nullptr, nullptr);
CaptureInput(true);
glfwMakeContextCurrent(overlayWindow);
glfwSetWindowPos(overlayWindow, screenPosX, screenPosY);
InitializeUI();
glfwShowWindow(overlayWindow);
glfwSwapInterval(0);
return true;
}
ImFont* IconFont = nullptr;
void InitializeUI() {
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImFontConfig cfg;
cfg.OversampleH = cfg.OversampleV = 1;
cfg.PixelSnapH = false;
cfg.SizePixels = 19.0f;
cfg.GlyphOffset = { 0.0f, 0.0f };
ImGuiIO& io = ImGui::GetIO();
(void)io;
io.Fonts->AddFontFromMemoryCompressedTTF(_compressedFontData, _compressedFontSize, cfg.SizePixels, &cfg, GetFontGlyphRanges());
ImGui_ImplGlfw_InitForOpenGL(overlayWindow, true);
ImGui_ImplOpenGL3_Init("#version 330 core");
}
// ocornut/imgui/issues/707#issuecomment-917151020
const void SetStyle() {
ImGuiStyle& style = ImGui::GetStyle();
style.WindowPadding = ImVec2(8.00f, 8.00f);
style.FramePadding = ImVec2(5.00f, 2.00f);
style.CellPadding = ImVec2(6.00f, 6.00f);
style.ItemSpacing = ImVec2(6.00f, 6.00f);
style.ItemInnerSpacing = ImVec2(6.00f, 6.00f);
style.TouchExtraPadding = ImVec2(0.00f, 0.00f);
style.IndentSpacing = 25;
style.ScrollbarSize = 15;
style.GrabMinSize = 10;
style.WindowBorderSize = 1;
style.ChildBorderSize = 1;
style.PopupBorderSize = 1;
style.FrameBorderSize = 1;
style.TabBorderSize = 1;
style.WindowRounding = 7;
style.ChildRounding = 4;
style.FrameRounding = 3;
style.PopupRounding = 4;
style.ScrollbarRounding = 9;
style.GrabRounding = 3;
style.LogSliderDeadzone = 4;
style.TabRounding = 4;
style.Colors[ImGuiCol_Text] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
style.Colors[ImGuiCol_TextDisabled] = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);
style.Colors[ImGuiCol_WindowBg] = ImVec4(0.10f, 0.10f, 0.10f, 1.00f);
style.Colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
style.Colors[ImGuiCol_PopupBg] = ImVec4(0.19f, 0.19f, 0.19f, 0.92f);
style.Colors[ImGuiCol_Border] = ImVec4(0.19f, 0.19f, 0.19f, 0.29f);
style.Colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.24f);
style.Colors[ImGuiCol_FrameBg] = ImVec4(0.05f, 0.05f, 0.05f, 0.54f);
style.Colors[ImGuiCol_FrameBgHovered] = ImVec4(0.19f, 0.19f, 0.19f, 0.54f);
style.Colors[ImGuiCol_FrameBgActive] = ImVec4(0.20f, 0.22f, 0.23f, 1.00f);
style.Colors[ImGuiCol_TitleBg] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
style.Colors[ImGuiCol_TitleBgActive] = ImVec4(0.06f, 0.06f, 0.06f, 1.00f);
style.Colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
style.Colors[ImGuiCol_MenuBarBg] = ImVec4(0.14f, 0.14f, 0.14f, 1.00f);
style.Colors[ImGuiCol_ScrollbarBg] = ImVec4(0.05f, 0.05f, 0.05f, 0.54f);
style.Colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.34f, 0.34f, 0.34f, 0.54f);
style.Colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.40f, 0.40f, 0.40f, 0.54f);
style.Colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.56f, 0.56f, 0.56f, 0.54f);
style.Colors[ImGuiCol_CheckMark] = ImVec4(0.33f, 0.67f, 0.86f, 1.00f);
style.Colors[ImGuiCol_SliderGrab] = ImVec4(0.34f, 0.34f, 0.34f, 0.54f);
style.Colors[ImGuiCol_SliderGrabActive] = ImVec4(0.56f, 0.56f, 0.56f, 0.54f);
style.Colors[ImGuiCol_Button] = ImVec4(0.05f, 0.05f, 0.05f, 0.54f);
style.Colors[ImGuiCol_ButtonHovered] = ImVec4(0.19f, 0.19f, 0.19f, 0.54f);
style.Colors[ImGuiCol_ButtonActive] = ImVec4(0.20f, 0.22f, 0.23f, 1.00f);
style.Colors[ImGuiCol_Header] = ImVec4(0.00f, 0.00f, 0.00f, 0.52f);
style.Colors[ImGuiCol_HeaderHovered] = ImVec4(0.00f, 0.00f, 0.00f, 0.36f);
style.Colors[ImGuiCol_HeaderActive] = ImVec4(0.20f, 0.22f, 0.23f, 0.33f);
style.Colors[ImGuiCol_Separator] = ImVec4(0.28f, 0.28f, 0.28f, 0.29f);
style.Colors[ImGuiCol_SeparatorHovered] = ImVec4(0.44f, 0.44f, 0.44f, 0.29f);
style.Colors[ImGuiCol_SeparatorActive] = ImVec4(0.40f, 0.44f, 0.47f, 1.00f);
style.Colors[ImGuiCol_ResizeGrip] = ImVec4(0.28f, 0.28f, 0.28f, 0.29f);
style.Colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.44f, 0.44f, 0.44f, 0.29f);
style.Colors[ImGuiCol_ResizeGripActive] = ImVec4(0.40f, 0.44f, 0.47f, 1.00f);
style.Colors[ImGuiCol_Tab] = ImVec4(0.00f, 0.00f, 0.00f, 0.52f);
style.Colors[ImGuiCol_TabHovered] = ImVec4(0.14f, 0.14f, 0.14f, 1.00f);
style.Colors[ImGuiCol_TabActive] = ImVec4(0.20f, 0.20f, 0.20f, 0.36f);
style.Colors[ImGuiCol_TabUnfocused] = ImVec4(0.00f, 0.00f, 0.00f, 0.52f);
style.Colors[ImGuiCol_TabUnfocusedActive] = ImVec4(0.14f, 0.14f, 0.14f, 1.00f);
//style.Colors[ImGuiCol_DockingPreview] = ImVec4(0.33f, 0.67f, 0.86f, 1.00f);
//style.Colors[ImGuiCol_DockingEmptyBg] = ImVec4(1.00f, 0.00f, 0.00f, 1.00f);
style.Colors[ImGuiCol_PlotLines] = ImVec4(1.00f, 0.00f, 0.00f, 1.00f);
style.Colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.00f, 0.00f, 1.00f);
style.Colors[ImGuiCol_PlotHistogram] = ImVec4(1.00f, 0.00f, 0.00f, 1.00f);
style.Colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.00f, 0.00f, 1.00f);
style.Colors[ImGuiCol_TableHeaderBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.52f);
style.Colors[ImGuiCol_TableBorderStrong] = ImVec4(0.00f, 0.00f, 0.00f, 0.52f);
style.Colors[ImGuiCol_TableBorderLight] = ImVec4(0.28f, 0.28f, 0.28f, 0.29f);
style.Colors[ImGuiCol_TableRowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
style.Colors[ImGuiCol_TableRowBgAlt] = ImVec4(1.00f, 1.00f, 1.00f, 0.06f);
style.Colors[ImGuiCol_TextSelectedBg] = ImVec4(0.20f, 0.22f, 0.23f, 1.00f);
style.Colors[ImGuiCol_DragDropTarget] = ImVec4(0.33f, 0.67f, 0.86f, 1.00f);
style.Colors[ImGuiCol_NavHighlight] = ImVec4(1.00f, 0.00f, 0.00f, 1.00f);
style.Colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 0.00f, 0.00f, 0.70f);
style.Colors[ImGuiCol_NavWindowingDimBg] = ImVec4(1.00f, 0.00f, 0.00f, 0.20f);
style.Colors[ImGuiCol_ModalWindowDimBg] = ImVec4(1.00f, 0.00f, 0.00f, 0.35f);
}
void DestroyOverlay() {
ImGui_ImplOpenGL3_Shutdown();
ImGui_ImplGlfw_Shutdown();
ImGui::DestroyContext();
if (overlayWindow != nullptr) {
glfwDestroyWindow(overlayWindow);
}
glfwTerminate();
}
void CaptureInput(bool capture) {
glfwSetWindowAttrib(overlayWindow, GLFW_MOUSE_PASSTHROUGH, capture ? GLFW_FALSE : GLFW_TRUE);
}
void FocusOverlay() {
glfwFocusWindow(overlayWindow);
}
void Render(void (*RenderUI)()) {
glfwPollEvents();
glViewport(0, 0, screenWidth, screenHeight);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, screenWidth, screenHeight, 0, -1, 1);
ImGui_ImplOpenGL3_NewFrame();
ImGui_ImplGlfw_NewFrame();
ImGui::NewFrame();
if (RenderUI != nullptr)
RenderUI();
// Render ImGui and swap buffers
ImGui::Render();
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
glfwSwapBuffers(overlayWindow);
}
void GetScreenResolution(int& width, int& height) const {
width = screenWidth;
height = screenHeight;
}
};