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https://github.com/fergalmoran/ladybird.git
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e5e295052f
Render the mouse cursor by xor'ing the pixels. I don't know anything about hardware cursors yet and this way we don't need to recompose the window hierarchy every time you move the mouse. :^)
65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
#include "AbstractScreen.h"
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#include "EventLoop.h"
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#include "Event.h"
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#include "Widget.h"
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#include "WindowManager.h"
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#include <AK/Assertions.h>
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static AbstractScreen* s_the;
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void AbstractScreen::initialize()
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{
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s_the = nullptr;
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}
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AbstractScreen& AbstractScreen::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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AbstractScreen::AbstractScreen(unsigned width, unsigned height)
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: Object(nullptr)
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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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PS2MouseDevice::the().set_client(this);
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}
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AbstractScreen::~AbstractScreen()
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{
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}
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void AbstractScreen::did_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.moveBy(dx, dy);
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if (m_cursor_location.x() >= width())
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m_cursor_location.setX(width() - 1);
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if (m_cursor_location.y() >= height())
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m_cursor_location.setY(height() - 1);
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if (m_cursor_location != prev_location) {
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auto event = make<MouseEvent>(Event::MouseMove, m_cursor_location.x(), m_cursor_location.y());
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EventLoop::main().postEvent(&WindowManager::the(), move(event));
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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 event = make<MouseEvent>(left_button ? Event::MouseDown : Event::MouseUp, m_cursor_location.x(), m_cursor_location.y(), MouseButton::Left);
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EventLoop::main().postEvent(&WindowManager::the(), move(event));
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}
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if (prev_right_button != right_button) {
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auto event = make<MouseEvent>(right_button ? Event::MouseDown : Event::MouseUp, m_cursor_location.x(), m_cursor_location.y(), MouseButton::Right);
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EventLoop::main().postEvent(&WindowManager::the(), move(event));
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}
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if (m_cursor_location != prev_location)
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WindowManager::the().redraw_cursor();
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}
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