kinect/codes/Azure-Kinect-Sensor-SDK/tools/k4aviewer/k4awindowsizehelpers.h

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2024-03-06 18:05:53 +00:00
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
#ifndef K4AWINDOWSIZEHELPERS_H
#define K4AWINDOWSIZEHELPERS_H
// System headers
//
// Library headers
//
#include "k4aimgui_all.h"
// Project headers
//
namespace k4aviewer
{
inline float GetStandardVerticalSliderWidth()
{
// Width of the slider is 1 character, plus half the normal padding
//
return ImGui::GetFont()->FontSize + ImGui::GetStyle().FramePadding.x;
}
inline float GetTitleBarHeight()
{
return ImGui::GetFont()->FontSize + ImGui::GetStyle().FramePadding.y * 2;
}
inline float GetDefaultButtonHeight()
{
return ImGui::GetFont()->FontSize + ImGui::GetStyle().FramePadding.y * 2 + ImGui::GetStyle().ItemSpacing.y;
}
// Gets the maximum dimensions that an image of size imageDimensions can be scaled to in order
// to fit in a window with imageMaxSize available space while maintaining its aspect ratio.
// imageMaxSize is expected to include space for window padding, but does not account for the
// title bar or any any potential other widgets in your window, so you'll need to subtract those
// from imageMaxSize, if applicable.
//
inline ImVec2 GetMaxImageSize(const ImVec2 imageDimensions, const ImVec2 imageMaxSize)
{
const float sourceAspectRatio = imageDimensions.x / imageDimensions.y;
const float verticalPadding = ImGui::GetStyle().WindowPadding.y * 2;
const float horizontalPadding = ImGui::GetStyle().WindowPadding.x * 2;
const float horizontalMaxSize = imageMaxSize.x - horizontalPadding;
const float verticalMaxSize = imageMaxSize.y - verticalPadding;
ImVec2 displayDimensions;
if (horizontalMaxSize / sourceAspectRatio <= verticalMaxSize)
{
displayDimensions.x = horizontalMaxSize;
displayDimensions.y = horizontalMaxSize / sourceAspectRatio;
}
else
{
displayDimensions.x = verticalMaxSize * sourceAspectRatio;
displayDimensions.y = verticalMaxSize;
}
displayDimensions.x = std::max(1.f, displayDimensions.x);
displayDimensions.y = std::max(1.f, displayDimensions.y);
return displayDimensions;
}
} // namespace k4aviewer
#endif