404 lines
14 KiB
C++
404 lines
14 KiB
C++
#include "window.hpp"
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#include <hex.hpp>
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#include <iostream>
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#include <numeric>
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#include "imgui.h"
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#include "imgui_internal.h"
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#include "imgui_impl_glfw.h"
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#include "imgui_impl_opengl3.h"
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#include "imgui_freetype.h"
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#include "helpers/plugin_handler.hpp"
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#include <glad/glad.h>
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#include <GLFW/glfw3.h>
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namespace hex {
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constexpr auto MenuBarItems = { "File", "Edit", "View", "Help" };
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void *ImHexSettingsHandler_ReadOpenFn(ImGuiContext *ctx, ImGuiSettingsHandler *, const char *) {
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return ctx; // Unused, but the return value has to be non-null
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}
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void ImHexSettingsHandler_ReadLine(ImGuiContext*, ImGuiSettingsHandler *handler, void *, const char* line) {
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auto *window = reinterpret_cast<Window *>(handler->UserData);
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for (auto &view : window->m_views) {
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std::string format = view->getName() + "=%d";
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sscanf(line, format.c_str(), &view->getWindowOpenState());
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}
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}
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void ImHexSettingsHandler_WriteAll(ImGuiContext* ctx, ImGuiSettingsHandler *handler, ImGuiTextBuffer *buf) {
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auto *window = reinterpret_cast<Window *>(handler->UserData);
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buf->reserve(buf->size() + 0x20); // Ballpark reserve
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buf->appendf("[%s][General]\n", handler->TypeName);
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for (auto &view : window->m_views) {
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buf->appendf("%s=%d\n", view->getName().c_str(), view->getWindowOpenState());
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}
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buf->append("\n");
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}
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Window::Window() {
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this->initGLFW();
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this->initImGui();
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this->initPlugins();
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}
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Window::~Window() {
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this->deinitImGui();
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this->deinitGLFW();
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this->deinitPlugins();
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for (auto &view : this->m_views)
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delete view;
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}
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void Window::loop() {
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while (!glfwWindowShouldClose(this->m_window)) {
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this->frameBegin();
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for (const auto &call : View::getDeferedCalls())
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call();
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View::getDeferedCalls().clear();
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for (auto &view : this->m_views) {
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if (!view->getWindowOpenState())
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continue;
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ImGui::SetNextWindowSizeConstraints(view->getMinSize(), view->getMaxSize());
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view->drawContent();
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}
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for (auto &view : this->m_pluginViews) {
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if (!view->getWindowOpenState())
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continue;
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ImGui::SetNextWindowSizeConstraints(view->getMinSize(), view->getMaxSize());
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view->drawContent();
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}
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View::drawCommonInterfaces();
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#ifdef DEBUG
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if (this->m_demoWindowOpen)
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ImGui::ShowDemoWindow(&this->m_demoWindowOpen);
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#endif
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this->frameEnd();
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}
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}
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bool Window::setFont(const std::filesystem::path &path) {
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if (!std::filesystem::exists(path))
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return false;
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auto &io = ImGui::GetIO();
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// If we have a custom font, then rescaling is unnecessary and will make it blurry
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io.FontGlobalScale = 1.0f;
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// Load font data & build atlas
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std::uint8_t *px;
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int w, h;
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io.Fonts->AddFontFromFileTTF(path.string().c_str(), std::floor(14.0f * this->m_fontScale)); // Needs conversion to char for Windows
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ImGuiFreeType::BuildFontAtlas(io.Fonts, ImGuiFreeType::Monochrome);
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io.Fonts->GetTexDataAsRGBA32(&px, &w, &h);
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// Create new font atlas
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GLuint tex;
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glGenTextures(1, &tex);
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glBindTexture(GL_TEXTURE_2D, tex);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA8, GL_UNSIGNED_INT, px);
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io.Fonts->SetTexID(reinterpret_cast<ImTextureID>(tex));
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return true;
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}
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void Window::frameBegin() {
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glfwPollEvents();
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ImGui_ImplOpenGL3_NewFrame();
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ImGui_ImplGlfw_NewFrame();
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ImGui::NewFrame();
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ImGuiViewport* viewport = ImGui::GetMainViewport();
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ImGui::SetNextWindowPos(viewport->GetWorkPos());
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ImGui::SetNextWindowSize(viewport->GetWorkSize());
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ImGui::SetNextWindowViewport(viewport->ID);
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ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
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ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
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ImGuiWindowFlags windowFlags = ImGuiWindowFlags_MenuBar | ImGuiWindowFlags_NoDocking
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| ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoCollapse
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| ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize
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| ImGuiWindowFlags_NoNavFocus | ImGuiWindowFlags_NoBringToFrontOnFocus;
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if (ImGui::Begin("DockSpace", nullptr, windowFlags)) {
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ImGui::PopStyleVar(2);
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ImGui::DockSpace(ImGui::GetID("MainDock"), ImVec2(0.0f, 0.0f), ImGuiDockNodeFlags_None);
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if (ImGui::BeginMenuBar()) {
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for (auto menu : MenuBarItems)
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if (ImGui::BeginMenu(menu)) ImGui::EndMenu();
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if (ImGui::BeginMenu("View")) {
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for (auto &view : this->m_views) {
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if (view->hasViewMenuItemEntry())
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ImGui::MenuItem((view->getName() + " View").c_str(), "", &view->getWindowOpenState());
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}
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if (ImGui::BeginMenu("Plugin Views")) {
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for (auto &view : this->m_pluginViews) {
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if (view->hasViewMenuItemEntry())
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ImGui::MenuItem((view->getName() + " View").c_str(), "", &view->getWindowOpenState());
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}
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ImGui::EndMenu();
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}
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ImGui::EndMenu();
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}
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for (auto &view : this->m_views) {
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view->drawMenu();
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}
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for (auto &view : this->m_pluginViews) {
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view->drawMenu();
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}
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if (ImGui::BeginMenu("View")) {
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ImGui::Separator();
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ImGui::MenuItem("Display FPS", "", &this->m_fpsVisible);
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#ifdef DEBUG
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ImGui::MenuItem("Demo View", "", &this->m_demoWindowOpen);
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#endif
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ImGui::EndMenu();
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}
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if (this->m_fpsVisible) {
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char buffer[0x20];
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snprintf(buffer, 0x20, "%.1f FPS", ImGui::GetIO().Framerate);
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ImGui::SameLine(ImGui::GetWindowWidth() - ImGui::GetFontSize() * strlen(buffer) + 20);
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ImGui::TextUnformatted(buffer);
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}
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ImGui::EndMenuBar();
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}
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if (auto &[key, mods] = Window::s_currShortcut; key != -1) {
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bool shortcutHandled = false;
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for (auto &view : this->m_pluginViews) {
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if (view->getWindowOpenState()) {
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if (view->handleShortcut(key, mods)) {
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shortcutHandled = true;
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break;
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}
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}
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}
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if (!shortcutHandled) {
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for (auto &view : this->m_views) {
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if (view->getWindowOpenState()) {
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if (view->handleShortcut(key, mods))
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break;
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}
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}
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}
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Window::s_currShortcut = { -1, -1 };
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}
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}
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ImGui::End();
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}
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void Window::frameEnd() {
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ImGui::Render();
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int displayWidth, displayHeight;
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glfwGetFramebufferSize(this->m_window, &displayWidth, &displayHeight);
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glViewport(0, 0, displayWidth, displayHeight);
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glClearColor(0.45f, 0.55f, 0.60f, 1.00f);
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glClear(GL_COLOR_BUFFER_BIT);
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ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
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GLFWwindow* backup_current_context = glfwGetCurrentContext();
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ImGui::UpdatePlatformWindows();
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ImGui::RenderPlatformWindowsDefault();
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glfwMakeContextCurrent(backup_current_context);
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glfwSwapBuffers(this->m_window);
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}
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void Window::initGLFW() {
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glfwSetErrorCallback([](int error, const char* desc) {
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fprintf(stderr, "Glfw Error %d: %s\n", error, desc);
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});
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if (!glfwInit())
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throw std::runtime_error("Failed to initialize GLFW!");
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#ifdef __APPLE__
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glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
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#endif
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if (auto *monitor = glfwGetPrimaryMonitor(); monitor) {
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float xscale, yscale;
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glfwGetMonitorContentScale(monitor, &xscale, &yscale);
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// In case the horizontal and vertical scale are different, fall back on the average
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this->m_globalScale = this->m_fontScale = std::midpoint(xscale, yscale);
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}
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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this->m_window = glfwCreateWindow(1280 * this->m_globalScale, 720 * this->m_globalScale, "ImHex", nullptr, nullptr);
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if (this->m_window == nullptr)
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throw std::runtime_error("Failed to create window!");
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glfwMakeContextCurrent(this->m_window);
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glfwSwapInterval(1);
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{
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int x = 0, y = 0;
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glfwGetWindowPos(this->m_window, &x, &y);
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View::setWindowPosition(x, y);
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}
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{
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int width = 0, height = 0;
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glfwGetWindowSize(this->m_window, &width, &height);
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View::setWindowSize(width, height);
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}
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glfwSetWindowPosCallback(this->m_window, [](GLFWwindow *window, int x, int y) {
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View::setWindowPosition(x, y);
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});
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glfwSetWindowSizeCallback(this->m_window, [](GLFWwindow *window, int width, int height) {
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View::setWindowSize(width, height);
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});
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glfwSetKeyCallback(this->m_window, [](GLFWwindow *window, int key, int scancode, int action, int mods) {
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if (action == GLFW_PRESS)
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Window::s_currShortcut = { key, mods };
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});
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glfwSetDropCallback(this->m_window, [](GLFWwindow *window, int count, const char **paths) {
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if (count != 1)
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return;
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View::postEvent(Events::FileDropped, paths[0]);
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});
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glfwSetWindowCloseCallback(this->m_window, [](GLFWwindow *window) {
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View::postEvent(Events::WindowClosing, window);
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});
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glfwSetWindowSizeLimits(this->m_window, 720, 480, GLFW_DONT_CARE, GLFW_DONT_CARE);
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if (gladLoadGL() == 0)
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throw std::runtime_error("Failed to initialize OpenGL loader!");
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}
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void Window::initImGui() {
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IMGUI_CHECKVERSION();
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auto *ctx = ImGui::CreateContext();
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ImGuiIO& io = ImGui::GetIO();
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ImGuiStyle& style = ImGui::GetStyle();
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io.ConfigFlags |= ImGuiConfigFlags_DockingEnable | ImGuiConfigFlags_ViewportsEnable;
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io.ConfigViewportsNoTaskBarIcon = true;
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if (this->m_globalScale != 0.0f)
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style.ScaleAllSizes(this->m_globalScale);
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#ifdef __MINGW32__
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std::filesystem::path resourcePath = std::filesystem::path(mainArgv[0]).parent_path();
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#elif defined(__linux__)
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std::filesystem::path resourcePath = "/usr/share/ImHex";
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#else
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std::filesystem::path resourcePath = "";
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# warning "Unsupported OS for custom font support"
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#endif
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if (!resourcePath.empty() && this->setFont(resourcePath / "font.ttf"))
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;
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else if ((this->m_fontScale != 0.0f) && (this->m_fontScale != 1.0f)) {
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io.Fonts->Clear();
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ImFontConfig cfg;
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cfg.OversampleH = cfg.OversampleV = 1, cfg.PixelSnapH = true;
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cfg.SizePixels = 13.0f * this->m_fontScale;
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io.Fonts->AddFontDefault(&cfg);
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}
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style.WindowMenuButtonPosition = ImGuiDir_None;
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style.IndentSpacing = 10.0F;
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// Install custom settings handler
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ImGuiSettingsHandler handler;
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handler.TypeName = "ImHex";
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handler.TypeHash = ImHashStr("ImHex");
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handler.ReadOpenFn = ImHexSettingsHandler_ReadOpenFn;
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handler.ReadLineFn = ImHexSettingsHandler_ReadLine;
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handler.WriteAllFn = ImHexSettingsHandler_WriteAll;
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handler.UserData = this;
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ctx->SettingsHandlers.push_back(handler);
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ImGui::StyleColorsDark();
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ImGui_ImplGlfw_InitForOpenGL(this->m_window, true);
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ImGui_ImplOpenGL3_Init("#version 150");
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}
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void Window::initPlugins() {
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PluginHandler::load((std::filesystem::path(mainArgv[0]).parent_path() / "plugins").string());
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for (const auto &plugin : PluginHandler::getPlugins()) {
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plugin.initializePlugin(ImGui::GetCurrentContext(), &prv::Provider::getCurrentProvider());
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if (auto view = plugin.createView(); view != nullptr)
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this->m_pluginViews.push_back(view);
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}
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}
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void Window::deinitGLFW() {
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glfwDestroyWindow(this->m_window);
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glfwTerminate();
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}
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void Window::deinitImGui() {
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ImGui_ImplOpenGL3_Shutdown();
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ImGui_ImplGlfw_Shutdown();
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ImGui::DestroyContext();
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}
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void Window::deinitPlugins() {
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PluginHandler::unload();
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for (auto &view : this->m_pluginViews)
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delete view;
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}
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} |