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0730b3c15f
I had to change PhysicalPage around a bit for this. Physical pages can now be instantiated for any arbitrary physical address without worrying that such pages end up in the kernel page allocator when released. Most of the pieces were already in place, I just glued everything together.
108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
#include "WSScreen.h"
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#include "WSMessageLoop.h"
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#include "WSMessage.h"
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#include "WSWindowManager.h"
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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static WSScreen* s_the;
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WSScreen& WSScreen::the()
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{
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ASSERT(s_the);
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return *s_the;
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}
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WSScreen::WSScreen(unsigned width, unsigned height)
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: m_width(width)
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, m_height(height)
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{
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ASSERT(!s_the);
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s_the = this;
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m_cursor_location = rect().center();
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m_framebuffer_fd = open("/dev/bxvga", O_RDWR);
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ASSERT(m_framebuffer_fd >= 0);
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set_resolution(width, height);
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}
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WSScreen::~WSScreen()
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{
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}
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void WSScreen::set_resolution(int width, int height)
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{
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struct BXVGAResolution {
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int width;
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int height;
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};
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BXVGAResolution resolution { (int)width, (int)height};
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int rc = ioctl(m_framebuffer_fd, 1985, (int)&resolution);
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ASSERT(rc == 0);
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if (m_framebuffer) {
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size_t previous_size_in_bytes = m_width * m_height * sizeof(RGBA32) * 2;
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int rc = munmap(m_framebuffer, previous_size_in_bytes);
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ASSERT(rc == 0);
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}
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size_t framebuffer_size_in_bytes = width * height * sizeof(RGBA32) * 2;
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m_framebuffer = (RGBA32*)mmap(nullptr, framebuffer_size_in_bytes, PROT_READ | PROT_WRITE, MAP_SHARED, m_framebuffer_fd, 0);
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ASSERT(m_framebuffer && m_framebuffer != (void*)-1);
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m_width = width;
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m_height = height;
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m_cursor_location.constrain(rect());
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}
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void WSScreen::on_receive_mouse_data(int dx, int dy, bool left_button, bool right_button)
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{
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auto prev_location = m_cursor_location;
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m_cursor_location.move_by(dx, dy);
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m_cursor_location.constrain(rect());
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if (m_cursor_location.x() >= width())
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m_cursor_location.set_x(width() - 1);
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if (m_cursor_location.y() >= height())
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m_cursor_location.set_y(height() - 1);
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unsigned buttons = 0;
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if (left_button)
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buttons |= (unsigned)MouseButton::Left;
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if (right_button)
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buttons |= (unsigned)MouseButton::Right;
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if (m_cursor_location != prev_location) {
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auto message = make<WSMouseEvent>(WSMessage::MouseMove, m_cursor_location, buttons);
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WSMessageLoop::the().post_message(&WSWindowManager::the(), move(message));
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}
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bool prev_left_button = m_left_mouse_button_pressed;
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bool prev_right_button = m_right_mouse_button_pressed;
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m_left_mouse_button_pressed = left_button;
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m_right_mouse_button_pressed = right_button;
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if (prev_left_button != left_button) {
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auto message = make<WSMouseEvent>(left_button ? WSMessage::MouseDown : WSMessage::MouseUp, m_cursor_location, buttons, MouseButton::Left);
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WSMessageLoop::the().post_message(&WSWindowManager::the(), move(message));
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}
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if (prev_right_button != right_button) {
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auto message = make<WSMouseEvent>(right_button ? WSMessage::MouseDown : WSMessage::MouseUp, m_cursor_location, buttons, MouseButton::Right);
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WSMessageLoop::the().post_message(&WSWindowManager::the(), move(message));
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}
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if (m_cursor_location != prev_location || prev_left_button != left_button)
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WSWindowManager::the().invalidate_cursor();
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}
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void WSScreen::on_receive_keyboard_data(KeyEvent kernel_event)
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{
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auto message = make<WSKeyEvent>(kernel_event.is_press() ? WSMessage::KeyDown : WSMessage::KeyUp, kernel_event.key, kernel_event.character);
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message->m_shift = kernel_event.shift();
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message->m_ctrl = kernel_event.ctrl();
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message->m_alt = kernel_event.alt();
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WSMessageLoop::the().post_message(&WSWindowManager::the(), move(message));
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}
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void WSScreen::set_y_offset(int offset)
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{
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int rc = ioctl(m_framebuffer_fd, 1982, offset);
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ASSERT(rc == 0);
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}
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