1 files changed, 58 insertions, 0 deletions
diff --git a/3rdparty/qtimgui/ImGuiRenderer.h b/3rdparty/qtimgui/ImGuiRenderer.h
new file mode 100644
index 00000000..ca69ffaa
--- /dev/null
+++ b/3rdparty/qtimgui/ImGuiRenderer.h
@@ -0,0 +1,58 @@
+#pragma once
+
+#include <QOpenGLExtraFunctions>
+#include <QObject>
+#include <QPoint>
+#include <imgui.h>
+#include <memory>
+
+class QMouseEvent;
+class QWheelEvent;
+class QKeyEvent;
+
+namespace QtImGui {
+
+class WindowWrapper {
+public:
+    virtual ~WindowWrapper() {}
+    virtual void installEventFilter(QObject *object) = 0;
+    virtual QSize size() const = 0;
+    virtual qreal devicePixelRatio() const = 0;
+    virtual bool isActive() const = 0;
+    virtual QPoint mapFromGlobal(const QPoint &p) const = 0;
+};
+
+class ImGuiRenderer : public QObject, QOpenGLExtraFunctions {
+    Q_OBJECT
+public:
+    void initialize(WindowWrapper *window);
+    void newFrame();
+
+    bool eventFilter(QObject *watched, QEvent *event);
+
+    static ImGuiRenderer *instance();
+
+private:
+    ImGuiRenderer() {}
+
+    void onMousePressedChange(QMouseEvent *event);
+    void onWheel(QWheelEvent *event);
+    void onKeyPressRelease(QKeyEvent *event);
+
+    void renderDrawList(ImDrawData *draw_data);
+    bool createFontsTexture();
+    bool createDeviceObjects();
+
+    std::unique_ptr<WindowWrapper> m_window;
+    double       g_Time = 0.0f;
+    bool         g_MousePressed[3] = { false, false, false };
+    float        g_MouseWheel;
+    float        g_MouseWheelH;
+    GLuint       g_FontTexture = 0;
+    int          g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
+    int          g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0;
+    int          g_AttribLocationPosition = 0, g_AttribLocationUV = 0, g_AttribLocationColor = 0;
+    unsigned int g_VboHandle = 0, g_VaoHandle = 0, g_ElementsHandle = 0;
+};
+
+}