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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.
*/
#include "imgui.h"
#include "ImGuiImplAndroid.hpp"
#include "GraphicsTypes.h"
#include "DebugUtilities.hpp"
namespace Diligent
{
ImGuiImplAndroid::ImGuiImplAndroid(IRenderDevice* pDevice,
TEXTURE_FORMAT BackBufferFmt,
TEXTURE_FORMAT DepthBufferFmt,
Uint32 InitialVertexBufferSize,
Uint32 InitialIndexBufferSize) :
ImGuiImplDiligent{pDevice, BackBufferFmt, DepthBufferFmt, InitialVertexBufferSize, InitialIndexBufferSize}
{
auto& io = ImGui::GetIO();
io.FontGlobalScale = 2;
io.BackendPlatformName = "Diligent-ImGuiImplAndroid";
m_LastTimestamp = std::chrono::high_resolution_clock::now();
}
ImGuiImplAndroid::~ImGuiImplAndroid()
{
}
void ImGuiImplAndroid::NewFrame(Uint32 RenderSurfaceWidth,
Uint32 RenderSurfaceHeight,
SURFACE_TRANSFORM SurfacePreTransform)
{
auto now = std::chrono::high_resolution_clock::now();
auto elapsed_ns = now - m_LastTimestamp;
m_LastTimestamp = now;
auto& io = ImGui::GetIO();
io.DeltaTime = static_cast<float>(elapsed_ns.count() / 1e+9);
// DisplaySize must always refer to the logical size that accounts for the pre-transform
io.DisplaySize.x = static_cast<float>(RenderSurfaceWidth);
io.DisplaySize.y = static_cast<float>(RenderSurfaceHeight);
switch (SurfacePreTransform)
{
case SURFACE_TRANSFORM_IDENTITY:
case SURFACE_TRANSFORM_ROTATE_180:
case SURFACE_TRANSFORM_HORIZONTAL_MIRROR:
case SURFACE_TRANSFORM_HORIZONTAL_MIRROR_ROTATE_180:
// Do nothing
break;
case SURFACE_TRANSFORM_ROTATE_90:
case SURFACE_TRANSFORM_ROTATE_270:
case SURFACE_TRANSFORM_HORIZONTAL_MIRROR_ROTATE_90:
case SURFACE_TRANSFORM_HORIZONTAL_MIRROR_ROTATE_270:
std::swap(io.DisplaySize.x, io.DisplaySize.y);
break;
case SURFACE_TRANSFORM_OPTIMAL:
UNEXPECTED("SURFACE_TRANSFORM_OPTIMAL is only valid as parameter during swap chain initialization.");
break;
default:
UNEXPECTED("Unknown transform");
}
ImGuiImplDiligent::NewFrame(RenderSurfaceWidth, RenderSurfaceHeight, SurfacePreTransform);
}
bool ImGuiImplAndroid::BeginDrag(float x, float y)
{
auto& io = ImGui::GetIO();
io.MousePos = ImVec2(x, y);
io.MouseDown[0] = true;
return io.WantCaptureMouse;
}
bool ImGuiImplAndroid::DragMove(float x, float y)
{
auto& io = ImGui::GetIO();
io.MousePos = ImVec2(x, y);
return io.WantCaptureMouse;
}
bool ImGuiImplAndroid::EndDrag()
{
auto& io = ImGui::GetIO();
io.MouseDown[0] = false;
return io.WantCaptureMouse;
}
} // namespace Diligent
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