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443d1c2237
Use the BochsVGA card's virtual-height + virtual-y features to implement a "hardware double buffering" type scheme. This is a performance degradation since we now draw a bunch more than before. But there's also no tearing or cursor flickering. I'm gonna commit this and try to improve upon it. :^)
72 lines
2.6 KiB
C++
72 lines
2.6 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 <AK/Assertions.h>
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#include <Kernel/IO.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(RGBA32* framebuffer, unsigned width, unsigned height)
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: m_framebuffer(framebuffer)
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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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}
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WSScreen::~WSScreen()
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{
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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(Keyboard::Event 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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