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/*
* Copyright 2019-2021 Diligent Graphics LLC
* Copyright 2015-2019 Egor Yusov
*
* 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* 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.hpp"
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(Uint32 RenderSurfaceWidth,
Uint32 RenderSurfaceHeight,
SURFACE_TRANSFORM SurfacePreTransform)
{
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().");
io.DisplaySize = ImVec2(static_cast<float>(RenderSurfaceWidth), static_cast<float>(RenderSurfaceHeight));
// Setup time step
INT64 current_time;
::QueryPerformanceCounter((LARGE_INTEGER*)¤t_time);
io.DeltaTime = (float)(current_time - m_Time) / m_TicksPerSecond;
m_Time = current_time;
io.KeySuper = false;
ImGuiImplDiligent::NewFrame(RenderSurfaceWidth, RenderSurfaceHeight, SurfacePreTransform);
}
} // namespace Diligent
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