Files
OpenSpace/modules/onscreengui/src/gui.cpp
Alexander Bock 9652e64fd3 Minor cleanup
2016-06-29 14:37:19 +02:00

530 lines
18 KiB
C++

/*****************************************************************************************
* *
* OpenSpace *
* *
* Copyright (c) 2014-2016 *
* *
* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
* software and associated documentation files (the "Software"), to deal in the Software *
* without restriction, including without limitation the rights to use, copy, modify, *
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
* permit persons to whom the Software is furnished to do so, subject to the following *
* conditions: *
* *
* The above copyright notice and this permission notice shall be included in all copies *
* or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
****************************************************************************************/
#include <modules/onscreengui/include/gui.h>
#include <openspace/engine/openspaceengine.h>
#include <openspace/rendering/renderengine.h>
#include <openspace/util/keys.h>
#include <ghoul/filesystem/cachemanager.h>
#include <ghoul/filesystem/filesystem.h>
#include <ghoul/opengl/ghoul_gl.h>
#include <ghoul/opengl/programobject.h>
#include <ghoul/opengl/texture.h>
#include <ghoul/opengl/textureunit.h>
#include <imgui.h>
#include "gui_lua.inl"
//#define SHOW_IMGUI_HELPERS
namespace {
const std::string _loggerCat = "GUI";
const std::string configurationFile = "imgui.ini";
const std::string GuiFont = "${FONTS}/Roboto/Roboto-Regular.ttf";
const ImVec2 size = ImVec2(350, 500);
//GLuint fontTex = 0;
// A VBO max size of 0 will cause a lazy instantiation of the buffer
size_t vboMaxSize = 0;
GLuint vao = 0;
GLuint vbo = 0;
std::unique_ptr<ghoul::opengl::ProgramObject> _program;
std::unique_ptr<ghoul::opengl::Texture> _fontTexture;
char* iniFileBuffer = nullptr;
static void RenderDrawLists(ImDrawList** const commandLists, int nCommandLists) {
if (nCommandLists == 0)
return;
// Setup render state:
// alpha-blending enabled, no face culling, no depth testing, scissor enabled
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
ghoul::opengl::TextureUnit unit;
unit.activate();
_fontTexture->bind();
// Setup orthographic projection matrix
const float width = ImGui::GetIO().DisplaySize.x;
const float height = ImGui::GetIO().DisplaySize.y;
const glm::mat4 ortho(
2.f / width, 0.0f, 0.0f, 0.f,
0.0f, 2.0f / -height, 0.0f, 0.f,
0.0f, 0.0f, -1.0f, 0.0f,
-1.0f, 1.0f, 0.0f, 1.0f
);
_program->activate();
_program->setUniform("tex", unit);
_program->setUniform("ortho", ortho);
// Grow our buffer according to what we need
size_t totalVertexCount = 0;
for (int i = 0; i < nCommandLists; ++i)
totalVertexCount += commandLists[i]->vtx_buffer.size();
glBindBuffer(GL_ARRAY_BUFFER, vbo);
size_t neededBufferSize = totalVertexCount * sizeof(ImDrawVert);
if (neededBufferSize > vboMaxSize) {
// Grow buffer
vboMaxSize = neededBufferSize * 1.25f;
glBufferData(GL_ARRAY_BUFFER, vboMaxSize, NULL, GL_STREAM_DRAW);
}
// Copy and convert all vertices into a single contiguous buffer
unsigned char* bufferData = reinterpret_cast<unsigned char*>(
glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY)
);
if (!bufferData) {
LFATAL("Error mapping ImGui buffer");
return;
}
for (int i = 0; i < nCommandLists; ++i) {
const ImDrawList* cmd_list = commandLists[i];
memcpy(
bufferData,
&cmd_list->vtx_buffer[0],
cmd_list->vtx_buffer.size() * sizeof(ImDrawVert)
);
bufferData += (cmd_list->vtx_buffer.size() * sizeof(ImDrawVert));
}
glUnmapBuffer(GL_ARRAY_BUFFER);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(vao);
int cmdOffset = 0;
for (int i = 0; i < nCommandLists; ++i) {
const ImDrawList* cmd_list = commandLists[i];
int vtxOffset = cmdOffset;
for (const auto& pcmd : cmd_list->commands) {
glScissor(
static_cast<int>(pcmd.clip_rect.x),
static_cast<int>(height - pcmd.clip_rect.w),
static_cast<int>(pcmd.clip_rect.z - pcmd.clip_rect.x),
static_cast<int>(pcmd.clip_rect.w - pcmd.clip_rect.y)
);
glDrawArrays(GL_TRIANGLES, vtxOffset, pcmd.vtx_count);
vtxOffset += pcmd.vtx_count;
}
cmdOffset = vtxOffset;
}
glBindVertexArray(0);
_program->deactivate();
glDisable(GL_SCISSOR_TEST);
}
void addScreenSpaceRenderable(std::string texturePath) {
if (!FileSys.fileExists(texturePath)) {
LWARNING("Could not find image '" << texturePath << "'");
return;
}
std::string luaTable =
"{Type = 'ScreenSpaceImage', TexturePath = '+" + absPath(texturePath) + " ' }";
std::string script = "openspace.registerScreenSpaceRenderable(" + luaTable + ");";
OsEng.scriptEngine().queueScript(script);
}
} // namespace
namespace openspace {
namespace gui {
GUI::GUI()
: GuiComponent()
, _property("Properties")
, _screenSpaceProperty("ScreenSpace Properties")
, _globalProperty("Global")
{}
GUI::~GUI() {
ImGui::Shutdown();
}
void GUI::initialize() {
std::string cachedFile = FileSys.cacheManager()->cachedFilename(
configurationFile, "", ghoul::filesystem::CacheManager::Persistent::Yes
);
iniFileBuffer = new char[cachedFile.size() + 1];
#ifdef WIN32
strcpy_s(iniFileBuffer, cachedFile.size() + 1, cachedFile.c_str());
#else
strcpy(iniFileBuffer, cachedFile.c_str());
#endif
ImGuiIO& io = ImGui::GetIO();
io.IniFilename = iniFileBuffer;
io.DeltaTime = 1.f / 60.f;
io.KeyMap[ImGuiKey_Tab] = static_cast<int>(Key::Tab);
io.KeyMap[ImGuiKey_LeftArrow] = static_cast<int>(Key::Left);
io.KeyMap[ImGuiKey_RightArrow] = static_cast<int>(Key::Right);
io.KeyMap[ImGuiKey_UpArrow] = static_cast<int>(Key::Up);
io.KeyMap[ImGuiKey_DownArrow] = static_cast<int>(Key::Down);
io.KeyMap[ImGuiKey_Home] = static_cast<int>(Key::Home);
io.KeyMap[ImGuiKey_End] = static_cast<int>(Key::End);
io.KeyMap[ImGuiKey_Delete] = static_cast<int>(Key::Delete);
io.KeyMap[ImGuiKey_Backspace] = static_cast<int>(Key::BackSpace);
io.KeyMap[ImGuiKey_Enter] = static_cast<int>(Key::Enter);
io.KeyMap[ImGuiKey_Escape] = static_cast<int>(Key::Escape);
io.KeyMap[ImGuiKey_A] = static_cast<int>(Key::A);
io.KeyMap[ImGuiKey_C] = static_cast<int>(Key::C);
io.KeyMap[ImGuiKey_V] = static_cast<int>(Key::V);
io.KeyMap[ImGuiKey_X] = static_cast<int>(Key::X);
io.KeyMap[ImGuiKey_Y] = static_cast<int>(Key::Y);
io.KeyMap[ImGuiKey_Z] = static_cast<int>(Key::Z);
io.RenderDrawListsFn = RenderDrawLists;
io.Fonts->AddFontFromFileTTF(
absPath(GuiFont).c_str(),
16.f
);
ImGuiStyle& style = ImGui::GetStyle();
style.WindowPadding = { 4.f, 4.f };
style.WindowRounding = 0.f;
style.FramePadding = { 3.f, 3.f };
style.FrameRounding = 0.f;
style.ScrollbarWidth = 15.f;
style.ScrollbarRounding = 0.f;
style.IndentSpacing = 25;
style.ItemSpacing = { 4.f, 2.f };
style.Colors[ImGuiCol_WindowBg] = ImVec4(0.0f, 0.21f, 0.24f, 1.0f);
style.Colors[ImGuiCol_Border] = ImVec4(0.1f, 0.39f, 0.42f, 0.59f);
style.Colors[ImGuiCol_BorderShadow] = ImVec4(0.0f, 0.0f, 0.0f, 0.0f);
style.Colors[ImGuiCol_TitleBg] = ImVec4(0.5f, 0.94f, 1.0f, 0.45f);
style.Colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.5f, 0.94f, 1.0f, 0.45f);
style.Colors[ImGuiCol_ScrollbarBg] = ImVec4(0.0f, 0.0f, 0.0f, 0.0f);
style.Colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.12f, 0.71f, 0.8f, 0.43f);
style.Colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.4f, 0.75f, 0.8f, 0.65f);
style.Colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.4f, 0.75f, 0.8f, 0.65f);
style.Colors[ImGuiCol_ComboBg] = ImVec4(0.18f, 0.51f, 0.78f, 1.f);
style.Colors[ImGuiCol_SliderGrabActive] = ImVec4(0.5f, 0.8f, 0.76f, 1.0f);
style.Colors[ImGuiCol_Button] = ImVec4(0.0f, 0.36f, 0.67f, 0.6f);
style.Colors[ImGuiCol_ButtonHovered] = ImVec4(0.0f, 0.51f, 0.94f, 1.0f);
style.Colors[ImGuiCol_ButtonActive] = ImVec4(0.0f, 0.43f, 0.8f, 1.0f);
style.Colors[ImGuiCol_Header] = ImVec4(0.f, 0.36f, 0.67f, 0.45f);
style.Colors[ImGuiCol_HeaderHovered] = ImVec4(0.f, 0.54f, 1.0f, 0.8f);
style.Colors[ImGuiCol_HeaderActive] = ImVec4(0.53f, 0.63f, 0.87f, 0.8f);
style.Colors[ImGuiCol_ResizeGrip] = ImVec4(1.0f, 1.0f, 1.0f, 1.0f);
style.Colors[ImGuiCol_CloseButton] = ImVec4(0.75f, 0.75f, 0.75f, 1.0f);
style.Colors[ImGuiCol_CloseButtonHovered] = ImVec4(0.52f, 0.52f, 0.52f, 0.6f);
style.Colors[ImGuiCol_CloseButtonActive] = ImVec4(0.52f, 0.52f, 0.52f, 1.0f);
_property.initialize();
_screenSpaceProperty.initialize();
_globalProperty.initialize();
_performance.initialize();
_help.initialize();
_iswa.initialize();
}
void GUI::deinitialize() {
_iswa.deinitialize();
_help.deinitialize();
_performance.deinitialize();
_globalProperty.deinitialize();
_screenSpaceProperty.deinitialize();
_property.deinitialize();
delete iniFileBuffer;
}
void GUI::initializeGL() {
_program = ghoul::opengl::ProgramObject::Build(
"GUI",
"${MODULE_ONSCREENGUI}/shaders/gui_vs.glsl",
"${MODULE_ONSCREENGUI}/shaders/gui_fs.glsl"
);
if (!_program)
return;
unsigned char* pngData;
glm::ivec2 textureSize;
ImGui::GetIO().Fonts->GetTexDataAsRGBA32(&pngData, &textureSize.x, &textureSize.y);
_fontTexture = std::make_unique<ghoul::opengl::Texture>(
pngData,
glm::uvec3(textureSize.x, textureSize.y, 1)
);
_fontTexture->setName("Gui Text");
_fontTexture->setDataOwnership(ghoul::opengl::Texture::TakeOwnership::No);
_fontTexture->uploadTexture();
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, vboMaxSize, NULL, GL_DYNAMIC_DRAW);
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glEnableVertexAttribArray(_program->attributeLocation("in_position"));
glEnableVertexAttribArray(_program->attributeLocation("in_uv"));
glEnableVertexAttribArray(_program->attributeLocation("in_color"));
glVertexAttribPointer(
_program->attributeLocation("in_position"),
2,
GL_FLOAT,
GL_FALSE,
sizeof(ImDrawVert),
reinterpret_cast<GLvoid*>(offsetof(ImDrawVert, pos))
);
glVertexAttribPointer(
_program->attributeLocation("in_uv"),
2,
GL_FLOAT,
GL_FALSE,
sizeof(ImDrawVert),
reinterpret_cast<GLvoid*>(offsetof(ImDrawVert, uv))
);
glVertexAttribPointer(
_program->attributeLocation("in_color"),
4,
GL_UNSIGNED_BYTE,
GL_TRUE,
sizeof(ImDrawVert),
reinterpret_cast<GLvoid*>(offsetof(ImDrawVert, col))
);
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
_property.initializeGL();
_screenSpaceProperty.initializeGL();
_globalProperty.initializeGL();
_performance.initializeGL();
_help.initializeGL();
_iswa.initializeGL();
}
void GUI::deinitializeGL() {
_program = nullptr;
_fontTexture = nullptr;
glDeleteVertexArrays(1, &vao);
glDeleteBuffers(1, &vbo);
_iswa.deinitializeGL();
_help.deinitializeGL();
_performance.deinitializeGL();
_globalProperty.deinitializeGL();
_screenSpaceProperty.deinitializeGL();
_property.deinitializeGL();
}
void GUI::startFrame(float deltaTime, const glm::vec2& windowSize,
const glm::vec2& mousePosCorrectionFactor,
const glm::vec2& mousePos,
uint32_t mouseButtonsPressed)
{
ImGuiIO& io = ImGui::GetIO();
io.DisplaySize = ImVec2(windowSize.x, windowSize.y);
io.DeltaTime = deltaTime;
io.MousePos = ImVec2(
mousePos.x * mousePosCorrectionFactor.x,
mousePos.y * mousePosCorrectionFactor.y
);
io.MouseDown[0] = mouseButtonsPressed & (1 << 0);
io.MouseDown[1] = mouseButtonsPressed & (1 << 1);
ImGui::NewFrame();
}
void GUI::endFrame() {
render();
if (_property.isEnabled())
_property.render();
if (_screenSpaceProperty.isEnabled())
_screenSpaceProperty.render();
if (_globalProperty.isEnabled())
_globalProperty.render();
if (_performance.isEnabled())
_performance.render();
if (_help.isEnabled())
_help.render();
if (_iswa.isEnabled())
_iswa.render();
ImGui::Render();
}
bool GUI::mouseButtonCallback(MouseButton button, MouseAction action) {
ImGuiIO& io = ImGui::GetIO();
bool consumeEvent = io.WantCaptureMouse;
return consumeEvent;
}
bool GUI::mouseWheelCallback(double position) {
ImGuiIO& io = ImGui::GetIO();
bool consumeEvent = io.WantCaptureMouse;
if (consumeEvent) {
io.MouseWheel = static_cast<float>(position);
}
return consumeEvent;
}
bool GUI::keyCallback(Key key, KeyModifier modifier, KeyAction action) {
ImGuiIO& io = ImGui::GetIO();
bool consumeEvent = io.WantCaptureKeyboard;
if (consumeEvent) {
int keyIndex = static_cast<int>(key);
if (keyIndex < 0)
LERROR("Pressed key of index '" << keyIndex << "' was negative");
else {
if (action == KeyAction::Press)
io.KeysDown[keyIndex] = true;
if (action == KeyAction::Release)
io.KeysDown[keyIndex] = false;
}
io.KeyShift = hasKeyModifier(modifier, KeyModifier::Shift);
io.KeyCtrl = hasKeyModifier(modifier, KeyModifier::Control);
io.KeyAlt = hasKeyModifier(modifier, KeyModifier::Alt);
}
return consumeEvent;
}
bool GUI::charCallback(unsigned int character, KeyModifier modifier) {
ImGuiIO& io = ImGui::GetIO();
bool consumeEvent = io.WantCaptureKeyboard;
if (consumeEvent)
io.AddInputCharacter((unsigned short)character);
return consumeEvent;
}
void GUI::render() {
ImGui::Begin("OpenSpace GUI", nullptr);
ImGui::Checkbox("Scene Graph Properties", &_property._isEnabled);
ImGui::Checkbox("ScreenSpace Properties", &_screenSpaceProperty._isEnabled);
ImGui::Checkbox("Global Properties", &_globalProperty._isEnabled);
#ifdef OPENSPACE_MODULE_ISWA_ENABLED
ImGui::Checkbox("iSWA", &_iswa._isEnabled);
#endif
ImGui::Checkbox("Performance", &_performance._isEnabled);
_origin.render();
_time.render();
// These are temporary until the scalegraph is in effect ---abock
bool toSun = ImGui::Button("Coordinate System to Sun");
bool toPluto = ImGui::Button("Coordinate System to Pluto");
bool toJupiter = ImGui::Button("Coordinate System to Jupiter");
bool to67P = ImGui::Button("Coordinate System to 67P");
if (toSun) {
OsEng.scriptEngine().queueScript(
"openspace.setPropertyValue('Interaction.coordinateSystem', 'Sun');"
);
}
if (toPluto) {
OsEng.scriptEngine().queueScript(
"openspace.setPropertyValue('Interaction.coordinateSystem', 'Pluto');"
);
}
if (toJupiter) {
OsEng.scriptEngine().queueScript(
"openspace.setPropertyValue('Interaction.coordinateSystem', 'Jupiter');"
);
}
if (to67P) {
OsEng.scriptEngine().queueScript(
"openspace.setPropertyValue('Interaction.coordinateSystem', '67P');"
);
}
ImGui::Checkbox("Help", &_help._isEnabled);
static const int addImageBufferSize = 256;
static char addImageBuffer[addImageBufferSize];
ImGui::InputText("addImage", addImageBuffer, addImageBufferSize);
if (ImGui::SmallButton("Add Image")) {
addScreenSpaceRenderable(std::string(addImageBuffer));
}
#ifdef SHOW_IMGUI_HELPERS
ImGui::Begin("Style Editor");
ImGui::ShowStyleEditor();
ImGui::End();
ImGui::Begin("Test Window");
ImGui::ShowTestWindow();
ImGui::End();
ImGui::Begin("Metrics Window");
ImGui::ShowMetricsWindow();
ImGui::End();
#endif
ImGui::End();
}
scripting::ScriptEngine::LuaLibrary GUI::luaLibrary() {
return {
"gui",
{
{
"show",
&luascriptfunctions::gui::show,
"",
"Shows the console"
},
{
"hide",
&luascriptfunctions::gui::hide,
"",
"Hides the console"
},
{
"toggle",
&luascriptfunctions::gui::toggle,
"",
"Toggles the console"
}
}
};
}
} // namespace gui
} // namespace openspace