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app: add Window.Maximize and Center, add Windows implementation

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Signed-off-by: Jan Kare Vatne <jkvatne@online.no>
This commit is contained in:
Jan Kåre Vatne
2021-11-10 13:56:08 +01:00
committed by Elias Naur
parent dce453e130
commit 9835cd5996
10 changed files with 98 additions and 0 deletions
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app/os_windows.go
+40
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@@ -539,6 +539,46 @@ func (w *window) Configure(options []Option) {
}
}
// Maximize the window. It will have no effect when in fullscreen mode.
func (w *window) Maximize() {
if w.config.Mode == Fullscreen {
return
}
style := windows.GetWindowLong(w.hwnd)
windows.SetWindowLong(w.hwnd, windows.GWL_STYLE, style|windows.WS_OVERLAPPEDWINDOW|windows.WS_MAXIMIZE)
mi := windows.GetMonitorInfo(w.hwnd)
windows.SetWindowPos(w.hwnd, 0,
mi.Monitor.Left, mi.Monitor.Top,
mi.Monitor.Right-mi.Monitor.Left,
mi.Monitor.Bottom-mi.Monitor.Top,
windows.SWP_NOOWNERZORDER|windows.SWP_FRAMECHANGED,
)
}
// Center will place window at monitor center.
func (w *window) Center() {
// Make sure that the window is sizeable
style := windows.GetWindowLong(w.hwnd) & (^uintptr(windows.WS_MAXIMIZE))
windows.SetWindowLong(w.hwnd, windows.GWL_STYLE, style|windows.WS_OVERLAPPEDWINDOW)
// Find with/height including the window decorations.
wr := windows.Rect{
Right: int32(w.config.Size.X),
Bottom: int32(w.config.Size.Y),
}
dwStyle := uint32(windows.WS_OVERLAPPEDWINDOW)
dwExStyle := uint32(windows.WS_EX_APPWINDOW | windows.WS_EX_WINDOWEDGE)
windows.AdjustWindowRectEx(&wr, dwStyle, 0, dwExStyle)
width := wr.Right - wr.Left
height := wr.Bottom - wr.Top
// Move to center of current monitor
mi := windows.GetMonitorInfo(w.hwnd).Monitor
x := mi.Left + (mi.Right-mi.Left-width)/2
y := mi.Top + (mi.Bottom-mi.Top-height)/2
windows.MoveWindow(w.hwnd, x, y, width, height, true)
}
func (w *window) SetWindowMode(mode WindowMode) {
// https://devblogs.microsoft.com/oldnewthing/20100412-00/?p=14353
switch mode {