127 lines
5.1 KiB
C++
127 lines
5.1 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 "common/key_map.h"
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#include "emu_window.h"
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#include "video_core/video_core.h"
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void EmuWindow::KeyPressed(KeyMap::HostDeviceKey key) {
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pad_state.hex |= KeyMap::GetPadKey(key).hex;
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}
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void EmuWindow::KeyReleased(KeyMap::HostDeviceKey key) {
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pad_state.hex &= ~KeyMap::GetPadKey(key).hex;
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}
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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 EmuWindow::FramebufferLayout& layout, unsigned framebuffer_x,
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unsigned framebuffer_y) {
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return (framebuffer_y >= layout.bottom_screen.top &&
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framebuffer_y < layout.bottom_screen.bottom &&
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framebuffer_x >= layout.bottom_screen.left &&
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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 * (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 * (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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pad_state.touch.Assign(1);
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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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pad_state.touch.Assign(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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EmuWindow::FramebufferLayout EmuWindow::FramebufferLayout::DefaultScreenLayout(unsigned width, unsigned height) {
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ASSERT(width > 0);
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ASSERT(height > 0);
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EmuWindow::FramebufferLayout res = { width, height, {}, {} };
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float window_aspect_ratio = static_cast<float>(height) / width;
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float emulation_aspect_ratio = static_cast<float>(VideoCore::kScreenTopHeight * 2) /
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VideoCore::kScreenTopWidth;
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if (window_aspect_ratio > emulation_aspect_ratio) {
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// Window is narrower than the emulation content => apply borders to the top and bottom
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int viewport_height = static_cast<int>(std::round(emulation_aspect_ratio * width));
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res.top_screen.left = 0;
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res.top_screen.right = res.top_screen.left + width;
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res.top_screen.top = (height - viewport_height) / 2;
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res.top_screen.bottom = res.top_screen.top + viewport_height / 2;
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int bottom_width = static_cast<int>((static_cast<float>(VideoCore::kScreenBottomWidth) /
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VideoCore::kScreenTopWidth) * (res.top_screen.right - res.top_screen.left));
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int bottom_border = ((res.top_screen.right - res.top_screen.left) - bottom_width) / 2;
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res.bottom_screen.left = bottom_border;
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res.bottom_screen.right = res.bottom_screen.left + bottom_width;
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res.bottom_screen.top = res.top_screen.bottom;
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res.bottom_screen.bottom = res.bottom_screen.top + viewport_height / 2;
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} else {
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// Otherwise, apply borders to the left and right sides of the window.
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int viewport_width = static_cast<int>(std::round(height / emulation_aspect_ratio));
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res.top_screen.left = (width - viewport_width) / 2;
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res.top_screen.right = res.top_screen.left + viewport_width;
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res.top_screen.top = 0;
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res.top_screen.bottom = res.top_screen.top + height / 2;
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int bottom_width = static_cast<int>((static_cast<float>(VideoCore::kScreenBottomWidth) /
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VideoCore::kScreenTopWidth) * (res.top_screen.right - res.top_screen.left));
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int bottom_border = ((res.top_screen.right - res.top_screen.left) - bottom_width) / 2;
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res.bottom_screen.left = res.top_screen.left + bottom_border;
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res.bottom_screen.right = res.bottom_screen.left + bottom_width;
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res.bottom_screen.top = res.top_screen.bottom;
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res.bottom_screen.bottom = res.bottom_screen.top + height / 2;
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}
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return res;
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}
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