110 lines
4.2 KiB
C++
110 lines
4.2 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <cmath>
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#include "common/assert.h"
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#include "core/core.h"
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#include "core/frontend/emu_window.h"
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#include "core/settings.h"
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#include "video_core/video_core.h"
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/**
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* Check if the given x/y coordinates are within the touchpad specified by the framebuffer layout
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* @param layout FramebufferLayout object describing the framebuffer size and screen positions
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* @param framebuffer_x Framebuffer x-coordinate to check
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* @param framebuffer_y Framebuffer y-coordinate to check
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* @return True if the coordinates are within the touchpad, otherwise false
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*/
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static bool IsWithinTouchscreen(const Layout::FramebufferLayout& layout, unsigned framebuffer_x,
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unsigned framebuffer_y) {
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return (
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framebuffer_y >= layout.bottom_screen.top && framebuffer_y < layout.bottom_screen.bottom &&
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framebuffer_x >= layout.bottom_screen.left && framebuffer_x < layout.bottom_screen.right);
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}
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std::tuple<unsigned, unsigned> EmuWindow::ClipToTouchScreen(unsigned new_x, unsigned new_y) {
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new_x = std::max(new_x, framebuffer_layout.bottom_screen.left);
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new_x = std::min(new_x, framebuffer_layout.bottom_screen.right - 1);
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new_y = std::max(new_y, framebuffer_layout.bottom_screen.top);
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new_y = std::min(new_y, framebuffer_layout.bottom_screen.bottom - 1);
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return std::make_tuple(new_x, new_y);
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}
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void EmuWindow::TouchPressed(unsigned framebuffer_x, unsigned framebuffer_y) {
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if (!IsWithinTouchscreen(framebuffer_layout, framebuffer_x, framebuffer_y))
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return;
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touch_x = VideoCore::kScreenBottomWidth *
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(framebuffer_x - framebuffer_layout.bottom_screen.left) /
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(framebuffer_layout.bottom_screen.right - framebuffer_layout.bottom_screen.left);
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touch_y = VideoCore::kScreenBottomHeight *
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(framebuffer_y - framebuffer_layout.bottom_screen.top) /
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(framebuffer_layout.bottom_screen.bottom - framebuffer_layout.bottom_screen.top);
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touch_pressed = true;
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}
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void EmuWindow::TouchReleased() {
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touch_pressed = false;
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touch_x = 0;
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touch_y = 0;
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}
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void EmuWindow::TouchMoved(unsigned framebuffer_x, unsigned framebuffer_y) {
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if (!touch_pressed)
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return;
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if (!IsWithinTouchscreen(framebuffer_layout, framebuffer_x, framebuffer_y))
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std::tie(framebuffer_x, framebuffer_y) = ClipToTouchScreen(framebuffer_x, framebuffer_y);
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TouchPressed(framebuffer_x, framebuffer_y);
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}
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void EmuWindow::AccelerometerChanged(float x, float y, float z) {
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constexpr float coef = 512;
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std::lock_guard<std::mutex> lock(accel_mutex);
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// TODO(wwylele): do a time stretch as it in GyroscopeChanged
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// The time stretch formula should be like
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// stretched_vector = (raw_vector - gravity) * stretch_ratio + gravity
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accel_x = static_cast<s16>(x * coef);
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accel_y = static_cast<s16>(y * coef);
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accel_z = static_cast<s16>(z * coef);
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}
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void EmuWindow::GyroscopeChanged(float x, float y, float z) {
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constexpr float FULL_FPS = 60;
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float coef = GetGyroscopeRawToDpsCoefficient();
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float stretch = Core::System::GetInstance().perf_stats.GetLastFrameTimeScale();
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std::lock_guard<std::mutex> lock(gyro_mutex);
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gyro_x = static_cast<s16>(x * coef * stretch);
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gyro_y = static_cast<s16>(y * coef * stretch);
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gyro_z = static_cast<s16>(z * coef * stretch);
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}
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void EmuWindow::UpdateCurrentFramebufferLayout(unsigned width, unsigned height) {
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Layout::FramebufferLayout layout;
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if (Settings::values.custom_layout == true) {
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layout = Layout::CustomFrameLayout(width, height);
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} else {
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switch (Settings::values.layout_option) {
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case Settings::LayoutOption::SingleScreen:
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layout = Layout::SingleFrameLayout(width, height, Settings::values.swap_screen);
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break;
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case Settings::LayoutOption::LargeScreen:
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layout = Layout::LargeFrameLayout(width, height, Settings::values.swap_screen);
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break;
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case Settings::LayoutOption::Default:
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default:
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layout = Layout::DefaultFrameLayout(width, height, Settings::values.swap_screen);
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break;
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}
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}
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NotifyFramebufferLayoutChanged(layout);
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}
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