window system, glfw, imgui

CMakeLists.txt

@@ -7,8 +7,6 @@ project(
     LANGUAGES CXX
 )
 
-set(CMAKE_CXX_STANDARD 20)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
 
 option(WITH_GTESTS "Enable GTest unit testing" ON)
 
@@ -21,6 +19,10 @@ endif()
 
 
 include(${CMAKE_SOURCE_DIR}/cmake/glad.cmake)
+include(${CMAKE_SOURCE_DIR}/cmake/imgui.cmake)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
 add_definitions(-DPRECISION_FLOAT)
 
 add_subdirectory(source)

cmake/imgui.cmake

@@ -0,0 +1,86 @@
+include(${CMAKE_CURRENT_LIST_DIR}/CPM.cmake)
+
+# branch: docking
+CPMAddPackage(
+        NAME imgui_external
+        GIT_REPOSITORY https://github.com/ocornut/imgui.git
+        GIT_TAG 24dfebf455ac1f7685e1a72272d37b72601fe70c
+        DOWNLOAD_ONLY YES
+)
+
+if(imgui_external_ADDED)
+    project(imgui)
+
+    set(CMAKE_CXX_STANDARD 17)
+
+    find_package(PkgConfig REQUIRED)
+    find_package(Freetype REQUIRED)
+    find_package(OpenGL REQUIRED)
+    pkg_search_module(GLFW REQUIRED glfw3)
+
+    add_library(${PROJECT_NAME} STATIC
+            ${imgui_external_SOURCE_DIR}/imgui.cpp
+            ${imgui_external_SOURCE_DIR}/imgui_demo.cpp
+            ${imgui_external_SOURCE_DIR}/imgui_draw.cpp
+            ${imgui_external_SOURCE_DIR}/imgui_tables.cpp
+            ${imgui_external_SOURCE_DIR}/imgui_widgets.cpp
+
+            ${imgui_external_SOURCE_DIR}/backends/imgui_impl_glfw.cpp
+            ${imgui_external_SOURCE_DIR}/backends/imgui_impl_opengl3.cpp
+
+            ${imgui_external_SOURCE_DIR}/misc/freetype/imgui_freetype.cpp
+            ${imgui_external_SOURCE_DIR}/misc/cpp/imgui_stdlib.cpp
+            )
+    add_library(imgui::imgui ALIAS ${PROJECT_NAME})
+
+    add_compile_definitions(IMGUI_IMPL_OPENGL_LOADER_GLAD)
+
+    target_include_directories(${PROJECT_NAME}
+            PUBLIC
+            $<BUILD_INTERFACE:${imgui_external_SOURCE_DIR}>
+            $<BUILD_INTERFACE:${imgui_external_SOURCE_DIR}/backends>
+            $<BUILD_INTERFACE:${imgui_external_SOURCE_DIR}/misc/freetype>
+            $<BUILD_INTERFACE:${imgui_external_SOURCE_DIR}/misc/cpp>
+
+            ${FREETYPE_INCLUDE_DIRS}
+            ${GLFW_INCLUDE_DIRS}
+            )
+
+    target_link_libraries(${PROJECT_NAME}
+            PUBLIC
+            Freetype::Freetype
+            glfw
+            OpenGL::GL
+            )
+
+    set_target_properties(${PROJECT_NAME}
+            PROPERTIES
+            POSITION_INDEPENDENT_CODE ON
+            OUTPUT_NAME imgui
+            EXCLUDE_FROM_ALL ON
+            )
+
+    include(GNUInstallDirs)
+
+    install(
+            TARGETS ${PROJECT_NAME}
+            EXPORT ${PROJECT_NAME}Targets
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/${PROJECT_NAME}
+    )
+
+    install(
+            EXPORT ${PROJECT_NAME}Targets
+            FILE ${PROJECT_NAME}Targets.cmake
+            NAMESPACE ${PROJECT_NAME}::
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
+    )
+
+    install(
+            DIRECTORY ${imgui_external_SOURCE_DIR}
+            DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}
+            COMPONENT devel
+            FILES_MATCHING
+            PATTERN "*.h"
+            PATTERN "*.hpp"
+    )
+endif()

source/creator/CMakeLists.txt

@@ -14,4 +14,5 @@ add_executable(hyporo
 
 target_link_libraries(hyporo
     PUBLIC
-    hyporo-hyplib)
+    hyporo-gpu
+        imgui)

source/creator/creator.cpp

@@ -1,22 +1,56 @@
-#include "scalar.hpp"
-#include "vector.hpp"
-#include <algorithm>
-#include <iostream>
-#include "matrix.hpp"
+#include "../hyporo/gpu/window_system.hpp"
+#include "../hyporo/gpu/glfw/window.hpp"
+#include <imgui.h>
+#include <imgui_impl_glfw.h>
+#include <imgui_impl_opengl3.h>
 
 int main(void)
 {
-    hyporo::vec3 v1 {1, 3, 2};
-    hyporo::vec3 v2 {7, 4, 5};
-    std::cout << -v1 << std::endl;
-    std::cout << ((v1 + v2) == hyporo::vec3(8, 7, 7)) << std::endl;
-    std::cout << v1 - v2 << std::endl;
-    std::cout << v1 * 2 << std::endl;
-    std::cout << v1 / 2 << std::endl;
-    std::cout << (v1 == v2) << std::endl;
-    std::cout << (v1 == v1) << std::endl;
-    hyporo::mat3 m1 {1, 3, 2, 5, 3, 6, 7, 2, 0};
-    hyporo::mat3 m2 {7, 4, 5, 5, 7, 3, 1, 4, 6};
-    std::cout << m1 + m2 << std::endl;
+    hpr::gpu::WindowSystem* ws = hpr::gpu::WindowSystem::create(hpr::gpu::WindowContext::Provider::GLFW);
+    hpr::gpu::Window* w = ws->newWindow();
+    w->init("test", hpr::gpu::Window::Style::Windowed, 0, 0, 600, 400, nullptr, nullptr);
+
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
+    io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;
+
+    ImGui::StyleColorsDark();
+
+    ImGui_ImplGlfw_InitForOpenGL(dynamic_cast<hpr::gpu::glfw::Window*>(w)->instance(), true);
+    ImGui_ImplOpenGL3_Init("#version 330");
+
+    while (w->isOpen())
+    {
+        dynamic_cast<hpr::gpu::glfw::Window*>(w)->pollEvents();
+
+        ImGui_ImplOpenGL3_NewFrame();
+        ImGui_ImplGlfw_NewFrame();
+        ImGui::NewFrame();
+
+        bool yes = true;
+        ImGui::ShowDemoWindow(&yes);
+
+        ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+        {
+            if (ImGui::Button("Exit"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                w->state(hpr::gpu::Window::State::Closed);
+            ImGui::End();
+        }
+
+        ImGui::Render();
+        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+        dynamic_cast<hpr::gpu::glfw::Window*>(w)->swapBuffers();
+    }
+
+    ImGui_ImplOpenGL3_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+
+    ws->destroyWindow(w);
+    hpr::gpu::WindowSystem::destroy(ws);
+
     return 0;
 }

source/hyporo/gpu/CMakeLists.txt

@@ -5,35 +5,49 @@ include_directories(
 
 add_library(hyporo-gpu STATIC
     # Source files
-    buffer.cpp
-    context.cpp
-    shader.cpp
-    opengl/buffer.cpp
-    opengl/context.cpp
-    opengl/shader.cpp
-    opengl/texture.cpp
-    opengl/device.cpp
-    opengl/shader_program.cpp
-    texture.cpp
-    device.cpp
-    shader_program.cpp
+        window_system.cpp
+        monitor.cpp
+        buffer.cpp
+        context.cpp
+        shader.cpp
+        window.cpp
+        opengl/buffer.cpp
+        opengl/context.cpp
+        opengl/shader.cpp
+        opengl/texture.cpp
+        #opengl/device.cpp
+        opengl/shader_program.cpp
+        texture.cpp
+        #device.cpp
+        glfw/window_system.cpp
+        glfw/monitor.cpp
+        glfw/window.cpp
+        shader_program.cpp
 
     # Header files
-    context.hpp
-    shader.hpp
-    shader_program.hpp
-    buffer.hpp
-    device.hpp
-    texture.hpp
-    opengl/context.hpp
-    opengl/shader.hpp
-    opengl/shader_program.hpp
-    opengl/buffer.hpp
-    opengl/device.hpp
-    opengl/texture.hpp
+        monitor.hpp
+        context.hpp
+        shader.hpp
+        window_context.hpp
+        shader_program.hpp
+        buffer.hpp
+        #device.hpp
+        window.hpp
+        texture.hpp
+        opengl/context.hpp
+        opengl/shader.hpp
+        opengl/shader_program.hpp
+        opengl/buffer.hpp
+        #opengl/device.hpp
+        opengl/texture.hpp
+        window_system.hpp
+        glfw/monitor.hpp
+        glfw/window.hpp
+        glfw/window_system.hpp
 )
 
 target_link_libraries(hyporo-gpu
     glad
+    glfw
     hyporo-hyplib
 )

source/hyporo/gpu/glfw/monitor.cpp

@@ -1,5 +1,14 @@
-//
-// Created by L-Nafaryus on 10/27/2022.
-//
-
 #include "monitor.hpp"
+
+
+namespace hpr::gpu::glfw
+{
+
+Monitor::Monitor() :
+    gpu::Monitor {Provider::GLFW},
+    p_instance {nullptr}
+{}
+
+Monitor::~Monitor() = default;
+
+}

source/hyporo/gpu/glfw/monitor.hpp

@@ -2,12 +2,26 @@
 
 #include "../monitor.hpp"
 
+#include "GLFW/glfw3.h"
+
 
 namespace hpr::gpu::glfw
 {
 
 class Monitor : public gpu::Monitor
 {
+    friend class WindowSystem;
+    friend class Window;
+
+protected:
+
+    GLFWmonitor* p_instance;
+
+public:
+
+    Monitor();
+
+    ~Monitor();
 
 };
 

source/hyporo/gpu/glfw/window.cpp

@@ -1,5 +1,100 @@
-//
-// Created by L-Nafaryus on 10/27/2022.
-//
-
 #include "window.hpp"
+#include "monitor.hpp"
+
+#include <stdexcept>
+
+
+namespace hpr::gpu::glfw
+{
+
+Window::Window() :
+    gpu::Window {Provider::GLFW},
+    p_instance {nullptr}
+{}
+
+Window::~Window() = default;
+
+void Window::init(const std::string& title, Style style, int x, int y, int width, int height, gpu::Window* parent, gpu::Monitor* monitor)
+{
+    if (!checkCompability(parent))
+        throw std::invalid_argument("Incompatible window provider passed");
+
+    gpu::Window::init(title, style, x, y, width, height, parent, monitor);
+
+    glfw::Window* parent_ = dynamic_cast<glfw::Window*>(parent);
+    glfw::Monitor* monitor_ = dynamic_cast<glfw::Monitor*>(monitor);
+
+    p_instance = glfwCreateWindow(width, height, title.c_str(),
+        monitor_ != nullptr ? monitor_->p_instance : nullptr, parent_ != nullptr ? parent_->p_instance : nullptr);
+    if (p_instance == nullptr)
+        throw std::runtime_error("Cannot create GLFW window");
+    glfwMakeContextCurrent(p_instance);
+    glfwSetWindowPos(p_instance, x, y);
+    this->style(style);
+}
+
+void Window::init(const std::string& title, Style style, gpu::Window* parent, gpu::Monitor* monitor)
+{
+    init(title, style, monitor->originX(), monitor->originY(), monitor->width(), monitor->height(), parent, monitor);
+}
+
+void Window::state(State state)
+{
+    gpu::Window::state(state);
+    switch (state)
+    {
+        case State::Visible:
+            glfwShowWindow(p_instance);
+            break;
+        case State::Hidden:
+            glfwHideWindow(p_instance);
+            break;
+        case State::Maximized:
+            glfwMaximizeWindow(p_instance);
+            break;
+        case State::Minimized:
+            glfwIconifyWindow(p_instance);
+            break;
+        case State::Closed:
+            glfwSetWindowShouldClose(p_instance, GLFW_TRUE);
+            break;
+        default:
+            break;
+    }
+}
+
+void Window::close()
+{
+    gpu::Window::close();
+    glfwDestroyWindow(p_instance);
+    p_instance = nullptr;
+}
+
+void Window::style(Style style)
+{
+    gpu::Window::style(style);
+    if (style == Style::Windowed)
+    {
+        glfwSetWindowMonitor(p_instance, nullptr, p_posX, p_posY, p_width, p_height, GLFW_DONT_CARE);
+    }
+    else if (style == Style::Fullscreen)
+    {
+        glfwSetWindowMonitor(p_instance, glfwGetPrimaryMonitor(), p_posX, p_posY, p_width, p_height, GLFW_DONT_CARE);
+    }
+    else if (style == Style::Popup)
+    {
+        //throw std::runtime_error("Popup style is not supported");
+    }
+}
+
+void Window::swapBuffers()
+{
+    glfwSwapBuffers(p_instance);
+}
+
+void Window::pollEvents()
+{
+    glfwPollEvents();
+}
+
+}

source/hyporo/gpu/glfw/window.hpp

@@ -1,8 +1,45 @@
-//
-// Created by L-Nafaryus on 10/27/2022.
-//
+#pragma once
 
-#ifndef HYPORO_WINDOW_HPP
-#define HYPORO_WINDOW_HPP
+#include "../window.hpp"
 
-#endif //HYPORO_WINDOW_HPP
+#include <GLFW/glfw3.h>
+
+
+namespace hpr::gpu::glfw
+{
+
+class Window : public gpu::Window
+{
+    friend class WindowSystem;
+
+protected:
+
+    GLFWwindow* p_instance;
+
+public:
+
+    Window();
+
+    virtual
+    ~Window();
+
+    GLFWwindow* instance() const
+    {
+        return p_instance;
+    }
+    void init(const std::string& title, Style style, int x, int y, int width, int height, gpu::Window* parent, gpu::Monitor* monitor) override;
+
+    void init(const std::string& title, Style style, gpu::Window* parent, gpu::Monitor* monitor) override;
+
+    void state(State state) override;
+
+    void close() override;
+
+    void style(Style style) override;
+
+    void swapBuffers();
+
+    void pollEvents();
+};
+
+}

source/hyporo/gpu/glfw/window_system.cpp

@@ -1,5 +1,38 @@
-//
-// Created by L-Nafaryus on 10/27/2022.
-//
-
+#include "monitor.hpp"
+#include "window.hpp"
 #include "window_system.hpp"
+
+
+namespace hpr::gpu::glfw
+{
+
+WindowSystem::WindowSystem() :
+    gpu::WindowSystem {Provider::GLFW}
+{
+    if (!glfwInit())
+        throw std::runtime_error("Cannot initialize GLFW");
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+}
+
+WindowSystem::~WindowSystem()
+{
+    for (auto& window : p_windows)
+        window->close();
+    glfwTerminate();
+}
+
+gpu::Window* WindowSystem::newWindow()
+{
+    p_windows.push(new glfw::Window);
+
+    return static_cast<gpu::Window*>(p_windows.back());
+}
+
+std::function<GLFWglproc(const char*)> WindowSystem::deviceProcAddress() const
+{
+    return std::function<GLFWglproc(const char*)>(glfwGetProcAddress);
+}
+
+}

source/hyporo/gpu/glfw/window_system.hpp

@@ -3,6 +3,7 @@
 #include "../window_system.hpp"
 
 #include <GLFW/glfw3.h>
+#include <functional>
 
 
 namespace hpr::gpu::glfw
@@ -11,18 +12,15 @@ namespace hpr::gpu::glfw
 class WindowSystem : public gpu::WindowSystem
 {
 
-protected:
-
-    GLFWwindow p_instance;
-
 public:
 
     WindowSystem();
 
-    ~WindowSystem();
+    ~WindowSystem() override;
 
-    virtual
-    void newWindow(Window** window);
+    gpu::Window* newWindow() override;
+
+    std::function<GLFWglproc(const char*)> deviceProcAddress() const;
 };
 
 }

source/hyporo/gpu/monitor.cpp

@@ -15,6 +15,17 @@ Monitor::Monitor() :
     p_logicalHeight {0}
 {}
 
+Monitor::Monitor(Provider provider) :
+        WindowContext(provider),
+        p_deviceName {},
+        p_originX {0},
+        p_originY {0},
+        p_width {0},
+        p_height {0},
+        p_logicalWidth {0},
+        p_logicalHeight {0}
+{}
+
 Monitor::~Monitor() = default;
 
 void Monitor::origin(int x, int y)

source/hyporo/gpu/monitor.hpp

@@ -8,7 +8,7 @@
 namespace hpr::gpu
 {
 
-class Monitor : WindowContext
+class Monitor : public WindowContext
 {
 
 protected:
@@ -25,6 +25,8 @@ public:
 
     Monitor();
 
+    Monitor(Provider provider);
+
     virtual
     ~Monitor();
 

source/hyporo/gpu/opengl/shader_program.cpp

@@ -14,7 +14,7 @@ ShaderProgram::ShaderProgram() :
 ShaderProgram::~ShaderProgram()
 {}
 
-Shader *ShaderProgram::shader(gpu::Shader::ShaderType type)
+Shader* ShaderProgram::shader(gpu::Shader::ShaderType type)
 {
     return static_cast<opengl::Shader*>(p_slots[(size_t)type]);
 }

source/hyporo/gpu/window.cpp

@@ -19,6 +19,21 @@ Window::Window() :
     p_isResizing {false}
 {}
 
+Window::Window(Provider provider) :
+        WindowContext(provider),
+        p_width {0},
+        p_height {0},
+        p_posX {0},
+        p_posY {0},
+        p_title {},
+        p_state {State::Hidden},
+        p_style {Style::Unknown},
+        p_parent {nullptr},
+        p_monitor {nullptr},
+        p_isActive {true},
+        p_isResizing {false}
+{}
+
 Window::~Window() = default;
 
 void Window::init(const std::string& title, Style style, int x, int y, int width, int height, Window* parent, Monitor* monitor)

source/hyporo/gpu/window.hpp

@@ -50,6 +50,8 @@ public:
 
     Window();
 
+    Window(Provider provider);
+
     virtual
     ~Window();
 
@@ -62,7 +64,7 @@ public:
     void init(const std::string& title, Style style, Window* parent, Monitor* monitor);
 
     virtual
-    void state(State state = State::Visible);
+    void state(State state);
 
     virtual
     void close();

source/hyporo/gpu/window_context.hpp

@@ -34,6 +34,11 @@ public:
     virtual
     ~WindowContext() = default;
 
+    bool checkCompability(const WindowContext* ctx) const
+    {
+        return (ctx != nullptr) ? ctx->p_provider == p_provider : true;
+    }
+
 };
 
 }

source/hyporo/gpu/window_system.cpp

@@ -15,17 +15,13 @@ WindowSystem::WindowSystem(Provider provider) :
 
 WindowSystem::~WindowSystem() = default;
 
-void WindowSystem::create(WindowSystem** ws, Provider provider)
+WindowSystem* WindowSystem::create(Provider provider)
 {
-    if (ws == nullptr)
-        throw std::invalid_argument("Invalid parameter 'nullptr'");
     if (provider == Provider::Unknown)
         throw std::invalid_argument("Cannot create window system from 'Unknown' provider");
 
-    *ws = nullptr;
-
     if (provider == Provider::GLFW)
-        *ws = new glfw::WindowSystem;
+        return new glfw::WindowSystem;
     else
         throw std::invalid_argument("Unsupported window system");
 }
@@ -36,7 +32,7 @@ void WindowSystem::destroy(WindowSystem*& ws)
     ws = nullptr;
 }
 
-Window& WindowSystem::window(int index)
+Window* WindowSystem::window(int index)
 {
     return p_windows[index];
 }
@@ -48,16 +44,18 @@ void WindowSystem::closeWindow(Window* window)
 
 void WindowSystem::destroyWindow(Window* window)
 {
-    p_windows.remove(*window);
+    p_windows.remove(window);
+    window->close();
+    window = nullptr;
 }
 
-Monitor& WindowSystem::monitor(int index)
+Monitor* WindowSystem::monitor(int index)
 {
     return p_monitors[index];
 }
 
 void WindowSystem::destroyMonitor(Monitor* monitor)
 {
-    p_monitors.remove(*monitor);
+    p_monitors.remove(monitor);
 }
 }

source/hyporo/gpu/window_system.hpp

@@ -10,13 +10,13 @@
 namespace hpr::gpu
 {
 
-class WindowSystem : WindowContext
+class WindowSystem : public WindowContext
 {
 
 protected:
 
-    darray<Window> p_windows;
-    darray<Monitor> p_monitors;
+    darray<Window*> p_windows;
+    darray<Monitor*> p_monitors;
 
 protected:
 
@@ -32,7 +32,7 @@ public:
     // Global functions
 
     static
-    void create(WindowSystem** ws, Provider provider);
+    WindowSystem* create(Provider provider);
 
     static
     void destroy(WindowSystem*& ws);
@@ -40,9 +40,9 @@ public:
     // Window interface
 
     virtual
-    void newWindow(Window** window) = 0;
+    Window* newWindow() = 0;
 
-    Window& window(int index);
+    Window* window(int index);
 
     void closeWindow(Window* window);
 
@@ -50,10 +50,10 @@ public:
 
     // Monitor interface
 
-    virtual
-    void newMonitor(Monitor** monitor) = 0;
+    //virtual
+    //void newMonitor(Monitor** monitor) = 0;
 
-    Monitor& monitor(int index);
+    Monitor* monitor(int index);
 
     void destroyMonitor(Monitor* monitor);
 

source/hyporo/hyplib/array/dynamic_array.hpp

@@ -258,9 +258,11 @@ public:
     virtual
     int findByAddress(const value_type& value)
     {
-        for (int n = 0; n < p_size; ++n)
-            if (std::addressof(*(p_start + n)) == std::addressof(value))
+        // TODO: make better approach
+        for (int n = 0; n < p_size; ++n) {
+            if (*std::addressof(*(p_start + n)) == *std::addressof(value))
                 return n;
+        }
         return -1;
     }
 
@@ -277,7 +279,7 @@ public:
     virtual
     void remove(const value_type& value)
     {
-        size_type index = findByAddress(value);
+        int index = findByAddress(value);
         if (index != -1)
             remove(index);
         else

source/hyporo/hyplib/array/static_array.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "iterator.hpp"
+
 #include <limits>
 #include <functional>