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Code Issues Projects Releases Packages Wiki Activity Actions 6

WindowServer: Preliminary absolute mouse positioning support

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This commit is contained in:
Sergey Bugaev 2020-02-03 19:30:35 +03:00 committed by Andreas Kling
parent 0334656e45
commit e94484d208
Notes: sideshowbarker 2024-07-19 09:40:23 +09:00 
Author: https://github.com/bugaevc
Commit: https://github.com/SerenityOS/serenity/commit/e94484d208e
Pull-request: https://github.com/SerenityOS/serenity/pull/1173
3 changed files with 34 additions and 21 deletions
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37
Servers/WindowServer/WSEventLoop.cpp
View file

@ -89,11 +89,9 @@ WSEventLoop::~WSEventLoop()
void WSEventLoop::drain_mouse()
{
auto& screen = WSScreen::the();
unsigned prev_buttons = screen.mouse_button_state();
int dx = 0;
int dy = 0;
int dz = 0;
unsigned buttons = prev_buttons;
MousePacket state;
state.buttons = screen.mouse_button_state();
unsigned buttons = state.buttons;
for (;;) {
MousePacket packet;
ssize_t nread = read(m_mouse_fd, &packet, sizeof(MousePacket));
@ -102,19 +100,26 @@ void WSEventLoop::drain_mouse()
ASSERT(nread == sizeof(packet));
buttons = packet.buttons;
dx += packet.dx;
dy += -packet.dy;
dz += packet.dz;
if (buttons != prev_buttons) {
screen.on_receive_mouse_data(dx, dy, dz, buttons);
dx = 0;
dy = 0;
dz = 0;
prev_buttons = buttons;
if (packet.is_relative) {
state.x += packet.x;
state.y -= packet.y;
state.z += packet.z;
} else {
state.x = packet.x;
state.y = packet.y;
state.z += packet.z;
}
if (buttons != state.buttons) {
state.buttons = buttons;
screen.on_receive_mouse_data(state);
state.x = 0;
state.y = 0;
state.z = 0;
}
}
if (dx || dy || dz)
screen.on_receive_mouse_data(dx, dy, dz, buttons);
if (state.is_relative && (state.x || state.y || state.z))
screen.on_receive_mouse_data(state);
}
void WSEventLoop::drain_keyboard()

14
Servers/WindowServer/WSScreen.cpp
View file

@ -30,6 +30,7 @@
#include "WSEventLoop.h"
#include "WSWindowManager.h"
#include <Kernel/FB.h>
#include <Kernel/MousePacket.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/mman.h>
@ -101,11 +102,16 @@ void WSScreen::set_buffer(int index)
ASSERT(rc == 0);
}
void WSScreen::on_receive_mouse_data(int dx, int dy, int dz, unsigned buttons)
void WSScreen::on_receive_mouse_data(const MousePacket& packet)
{
auto prev_location = m_cursor_location;
m_cursor_location.move_by(dx, dy);
if (packet.is_relative)
m_cursor_location.move_by(packet.x, packet.y);
else
m_cursor_location = { packet.x * m_width / 0xffff, packet.y * m_height / 0xffff };
m_cursor_location.constrain(rect());
unsigned buttons = packet.buttons;
unsigned prev_buttons = m_mouse_button_state;
m_mouse_button_state = buttons;
unsigned changed_buttons = prev_buttons ^ buttons;
@ -123,8 +129,8 @@ void WSScreen::on_receive_mouse_data(int dx, int dy, int dz, unsigned buttons)
Core::EventLoop::current().post_event(WSWindowManager::the(), move(message));
}
if (dz) {
auto message = make<WSMouseEvent>(WSEvent::MouseWheel, m_cursor_location, buttons, MouseButton::None, m_modifiers, dz);
if (packet.z) {
auto message = make<WSMouseEvent>(WSEvent::MouseWheel, m_cursor_location, buttons, MouseButton::None, m_modifiers, packet.z);
Core::EventLoop::current().post_event(WSWindowManager::the(), move(message));
}

4
Servers/WindowServer/WSScreen.h
View file

@ -31,6 +31,8 @@
#include <LibDraw/Rect.h>
#include <LibDraw/Size.h>
struct MousePacket;
class WSScreen {
public:
WSScreen(unsigned width, unsigned height);
@ -53,7 +55,7 @@ public:
Point cursor_location() const { return m_cursor_location; }
unsigned mouse_button_state() const { return m_mouse_button_state; }
void on_receive_mouse_data(int dx, int dy, int dz, unsigned buttons);
void on_receive_mouse_data(const MousePacket&);
void on_receive_keyboard_data(KeyEvent);
private: