internal/ui: use the cursor position to choose the initial monitor for Windows

Updates #1918
Updates #1982
This commit is contained in:
Hajime Hoshi 2022-02-07 23:31:08 +09:00
parent cafb71719c
commit ed04021151
4 changed files with 51 additions and 24 deletions

View File

@ -170,8 +170,12 @@ func initialize() error {
glfw.WindowHint(glfw.ClientAPI, glfw.NoAPI)
var m *glfw.Monitor
if runtime.GOOS == "darwin" {
m = initialMonitorByOS()
if runtime.GOOS == "darwin" || runtime.GOOS == "windows" {
var err error
m, err = initialMonitorByOS()
if err != nil {
return err
}
if m == nil {
m = glfw.GetPrimaryMonitor()
}
@ -189,7 +193,10 @@ func initialize() error {
defer w.Destroy()
initializeWindowAfterCreation(w)
theUI.waitForFramebufferSizeCallback(w, nil)
m = initialMonitorByOS()
m, err = initialMonitorByOS()
if err != nil {
return err
}
if m == nil {
m = currentMonitorImpl(w)
}

View File

@ -158,7 +158,7 @@ func (u *UserInterface) adjustWindowPosition(x, y int) (int, int) {
return x, y
}
func initialMonitorByOS() *glfw.Monitor {
func initialMonitorByOS() (*glfw.Monitor, error) {
var cx, cy C.int
C.currentMouseLocation(&cx, &cy)
x, y := int(cx), int(cy)
@ -176,11 +176,11 @@ func initialMonitorByOS() *glfw.Monitor {
for _, m := range ensureMonitors() {
w, h := m.vm.Width, m.vm.Height
if x >= m.x && x < m.x+w && y >= m.y && y < m.y+h {
return m.m
return m.m, nil
}
}
return nil
return nil, nil
}
func currentMonitorByOS(w *glfw.Window) *glfw.Monitor {

View File

@ -133,8 +133,8 @@ func (u *UserInterface) adjustWindowPosition(x, y int) (int, int) {
return x, y
}
func initialMonitorByOS() *glfw.Monitor {
return nil
func initialMonitorByOS() (*glfw.Monitor, error) {
return nil, nil
}
func currentMonitorByOS(_ *glfw.Window) *glfw.Monitor {

View File

@ -46,12 +46,17 @@ type monitorInfo struct {
dwFlags uint32
}
type point struct {
x int32
y int32
}
var (
// user32 is defined at hideconsole_windows.go
procGetSystemMetrics = user32.NewProc("GetSystemMetrics")
procGetForegroundWindow = user32.NewProc("GetForegroundWindow")
procMonitorFromWindow = user32.NewProc("MonitorFromWindow")
procGetMonitorInfoW = user32.NewProc("GetMonitorInfoW")
procGetCursorPos = user32.NewProc("GetCursorPos")
)
func getSystemMetrics(nIndex int) (int32, error) {
@ -64,11 +69,6 @@ func getSystemMetrics(nIndex int) (int32, error) {
return int32(r), nil
}
func getForegroundWindow() windows.HWND {
r, _, _ := procGetForegroundWindow.Call()
return windows.HWND(r)
}
func monitorFromWindow(hwnd windows.HWND, dwFlags uint32) uintptr {
r, _, _ := procMonitorFromWindow.Call(uintptr(hwnd), uintptr(dwFlags))
return r
@ -85,6 +85,18 @@ func getMonitorInfoW(hMonitor uintptr, lpmi *monitorInfo) error {
return nil
}
func getCursorPos() (int32, int32, error) {
var pt point
r, _, e := procGetCursorPos.Call(uintptr(unsafe.Pointer(&pt)))
if r == 0 {
if e != nil && e != windows.ERROR_SUCCESS {
return 0, 0, fmt.Errorf("ui: GetCursorPos failed: error code: %w", e)
}
return 0, 0, fmt.Errorf("ui: GetCursorPos failed: returned 0")
}
return pt.x, pt.y, nil
}
// clearVideoModeScaleCache must be called from the main thread.
func clearVideoModeScaleCache() {}
@ -120,14 +132,22 @@ func (u *UserInterface) adjustWindowPosition(x, y int) (int, int) {
return x, y
}
func initialMonitorByOS() *glfw.Monitor {
// Get the foreground window, that is common among multiple processes.
w := getForegroundWindow()
if w == 0 {
// GetForegroundWindow can return null according to the document.
return nil
func initialMonitorByOS() (*glfw.Monitor, error) {
px, py, err := getCursorPos()
if err != nil {
return nil, err
}
return monitorFromWin32Window(w)
x, y := int(px), int(py)
// Find the monitor including the cursor.
for _, m := range ensureMonitors() {
w, h := m.vm.Width, m.vm.Height
if x >= m.x && x < m.x+w && y >= m.y && y < m.y+h {
return m.m, nil
}
}
return nil, nil
}
func currentMonitorByOS(w *glfw.Window) *glfw.Monitor {