Enabled ImGui on UWP

1 files changed, 101 insertions, 0 deletions

diff --git a/Imgui/src/ImGuiImplUWP.cpp b/Imgui/src/ImGuiImplUWP.cpp
new file mode 100644
index 0000000..4389785
--- /dev/null
+++ b/Imgui/src/ImGuiImplUWP.cpp
@@ -0,0 +1,101 @@
+/*     Copyright 2019 Diligent Graphics LLC
+ *  
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ *  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 OF ANY PROPRIETARY RIGHTS.
+ *
+ *  In no event and under no legal theory, whether in tort (including negligence), 
+ *  contract, or otherwise, unless required by applicable law (such as deliberate 
+ *  and grossly negligent acts) or agreed to in writing, shall any Contributor be
+ *  liable for any damages, including any direct, indirect, special, incidental, 
+ *  or consequential damages of any character arising as a result of this License or 
+ *  out of the use or inability to use the software (including but not limited to damages 
+ *  for loss of goodwill, work stoppage, computer failure or malfunction, or any and 
+ *  all other commercial damages or losses), even if such Contributor has been advised 
+ *  of the possibility of such damages.
+ */
+
+#ifndef NOMINMAX
+#   define NOMINMAX
+#endif
+#include <wrl.h>
+#include <wrl/client.h>
+
+#include "imgui.h"
+#include "ImGuiImplUWP.h"
+
+
+namespace Diligent
+{
+
+ImGuiImplUWP::ImGuiImplUWP(IRenderDevice*  pDevice,
+                           TEXTURE_FORMAT  BackBufferFmt,
+                           TEXTURE_FORMAT  DepthBufferFmt,
+                           Uint32          InitialVertexBufferSize,
+                           Uint32          InitialIndexBufferSize) :
+     ImGuiImplDiligent(pDevice, BackBufferFmt, DepthBufferFmt, InitialVertexBufferSize, InitialIndexBufferSize)
+{
+    ::QueryPerformanceFrequency((LARGE_INTEGER *)&m_TicksPerSecond);
+    ::QueryPerformanceCounter((LARGE_INTEGER *)&m_Time);
+
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendPlatformName = "imgui_impl_uwp";
+
+    // Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array that we will update during the application lifetime.
+    io.KeyMap[ImGuiKey_Tab] = VK_TAB;
+    io.KeyMap[ImGuiKey_LeftArrow] = VK_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = VK_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow]    = VK_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = VK_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = VK_PRIOR;
+    io.KeyMap[ImGuiKey_PageDown] = VK_NEXT;
+    io.KeyMap[ImGuiKey_Home] = VK_HOME;
+    io.KeyMap[ImGuiKey_End] = VK_END;
+    io.KeyMap[ImGuiKey_Insert] = VK_INSERT;
+    io.KeyMap[ImGuiKey_Delete] = VK_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = VK_BACK;
+    io.KeyMap[ImGuiKey_Space] = VK_SPACE;
+    io.KeyMap[ImGuiKey_Enter] = VK_RETURN;
+    io.KeyMap[ImGuiKey_Escape] = VK_ESCAPE;
+    io.KeyMap[ImGuiKey_KeyPadEnter] = VK_RETURN;
+    io.KeyMap[ImGuiKey_A] = 'A';
+    io.KeyMap[ImGuiKey_C] = 'C';
+    io.KeyMap[ImGuiKey_V] = 'V';
+    io.KeyMap[ImGuiKey_X] = 'X';
+    io.KeyMap[ImGuiKey_Y] = 'Y';
+    io.KeyMap[ImGuiKey_Z] = 'Z';
+}
+
+ImGuiImplUWP::~ImGuiImplUWP()
+{
+}
+
+void ImGuiImplUWP::NewFrame()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IM_ASSERT(io.Fonts->IsBuilt() && "Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer _NewFrame() function? e.g. ImGui_ImplOpenGL3_NewFrame().");
+
+    // Setup display size (every frame to accommodate for window resizing)
+    RECT rect = {0, 0, 1280, 1024};
+    //::GetClientRect(g_hWnd, &rect);
+    io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top));
+
+    // Setup time step
+    INT64 current_time;
+    ::QueryPerformanceCounter((LARGE_INTEGER *)&current_time);
+    io.DeltaTime = (float)(current_time - m_Time) / m_TicksPerSecond;
+    m_Time = current_time;
+
+    io.KeySuper = false;
+
+    ImGuiImplDiligent::NewFrame();
+}
+
+}