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ImGui unique contexts

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This commit is contained in:
Dan Paulat 2022-11-26 21:46:57 -06:00
parent 2347eff04d
commit fef3c597d0
4 changed files with 89 additions and 10 deletions
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39
scwx-qt/source/scwx/qt/map/map_widget.cpp
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@ -14,6 +14,7 @@
#include <scwx/util/time.hpp>
#include <backends/imgui_impl_opengl3.h>
#include <backends/imgui_impl_qt.hpp>
#include <imgui.h>
#include <QApplication>
#include <QColor>
@ -60,6 +61,7 @@ public:
settings_(settings),
map_(),
layerList_ {},
imGuiContext_ {ImGui::CreateContext()},
radarProductManager_ {nullptr},
radarProductLayer_ {nullptr},
alertLayer_ {std::make_shared<AlertLayer>(context_)},
@ -79,8 +81,31 @@ public:
{
SetRadarSite(scwx::qt::manager::SettingsManager::general_settings()
->default_radar_site());
// Set ImGui Context
ImGui::SetCurrentContext(imGuiContext_);
// ImGui Configuration
auto& io = ImGui::GetIO();
// Disable automatic configuration loading/saving
io.IniFilename = nullptr;
// Initialize ImGui Qt backend
ImGui_ImplQt_Init();
ImGui_ImplQt_RegisterWidget(widget_);
}
~MapWidgetImpl()
{
// Set ImGui Context
ImGui::SetCurrentContext(imGuiContext_);
// Shutdown ImGui Context
ImGui_ImplOpenGL3_Shutdown();
ImGui_ImplQt_Shutdown();
ImGui::DestroyContext(imGuiContext_);
}
~MapWidgetImpl() = default;
void AddLayer(const std::string& id,
std::shared_ptr<GenericLayer> layer,
@ -103,6 +128,8 @@ public:
std::shared_ptr<QMapLibreGL::Map> map_;
std::list<std::string> layerList_;
ImGuiContext* imGuiContext_;
std::shared_ptr<manager::RadarProductManager> radarProductManager_;
std::shared_ptr<common::ColorTable> colorTable_;
@ -136,6 +163,8 @@ MapWidget::MapWidget(const QMapLibreGL::Settings& settings) :
p(std::make_unique<MapWidgetImpl>(this, settings))
{
setFocusPolicy(Qt::StrongFocus);
ImGui_ImplQt_RegisterWidget(this);
}
MapWidget::~MapWidget()
@ -644,6 +673,10 @@ void MapWidget::initializeGL()
makeCurrent();
p->context_->gl().initializeOpenGLFunctions();
// Initialize ImGui OpenGL3 backend
ImGui::SetCurrentContext(p->imGuiContext_);
ImGui_ImplOpenGL3_Init();
p->map_.reset(
new QMapLibreGL::Map(nullptr, p->settings_, size(), pixelRatio()));
p->context_->set_map(p->map_);
@ -686,10 +719,10 @@ void MapWidget::paintGL()
p->frameDraws_++;
// Setup ImGui Frame
ImGui::GetIO().DisplaySize = {static_cast<float>(size().width()),
static_cast<float>(size().height())};
ImGui::SetCurrentContext(p->imGuiContext_);
// Start ImGui Frame
ImGui_ImplQt_NewFrame(this);
ImGui_ImplOpenGL3_NewFrame();
ImGui::NewFrame();