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[win32] 

- Take drop shadown into account when calling SetWindowPos (milepost window frame _excludes_ the drop shadow)
- Fix mp_window_center()
This commit is contained in:
martinfouilleul 2023-07-26 17:35:58 +02:00
parent 2c0d3268e7
commit 0785b6b637
2 changed files with 50 additions and 17 deletions
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2
examples/simpleWindow/main.c
View File

@ -22,6 +22,8 @@ int main()
mp_window_bring_to_front(window);
mp_window_focus(window);
mp_window_center(window);
while(!mp_should_quit())
{
mp_pump_events(0);

61
src/win32_app.c
View File

@ -831,6 +831,27 @@ mp_rect mp_window_get_frame_rect(mp_window window)
return(rect);
}
mp_rect win32_get_drop_shadow_offsets(HWND hWnd)
{
RECT frameIncludingShadow;
RECT frameExcludingShadow;
GetWindowRect(hWnd, &frameIncludingShadow);
DwmGetWindowAttribute(hWnd,
DWMWA_EXTENDED_FRAME_BOUNDS,
&frameExcludingShadow,
sizeof(RECT));
mp_rect extents = {
.x = frameIncludingShadow.left - frameExcludingShadow.left,
.y = frameIncludingShadow.top - frameExcludingShadow.top,
.w = frameIncludingShadow.right - frameExcludingShadow.right,
.h = frameIncludingShadow.bottom- frameExcludingShadow.bottom
};
return(extents);
}
void mp_window_set_frame_rect(mp_window window, mp_rect rect)
{
mp_window_data* windowData = mp_window_ptr_from_handle(window);
@ -839,11 +860,14 @@ void mp_window_set_frame_rect(mp_window window, mp_rect rect)
u32 dpi = GetDpiForWindow(windowData->win32.hWnd);
f32 scale = (float)dpi/96.;
//NOTE compute the size of the drop shadow to add it in setwindowpos
mp_rect shadowOffsets = win32_get_drop_shadow_offsets(windowData->win32.hWnd);
RECT frame = {
rect.x * scale,
rect.y * scale,
(rect.x + rect.w)*scale,
(rect.y + rect.h)*scale
rect.x * scale + shadowOffsets.x,
rect.y * scale + shadowOffsets.y,
(rect.x + rect.w)*scale + shadowOffsets.w,
(rect.y + rect.h)*scale + shadowOffsets.h
};
SetWindowPos(windowData->win32.hWnd,
@ -909,28 +933,35 @@ void mp_window_set_content_rect(mp_window window, mp_rect rect)
}
}
//TODO: set content rect, center
void mp_window_center(mp_window window)
{
mp_window_data* windowData = mp_window_ptr_from_handle(window);
if(windowData)
{
RECT winRect;
GetWindowRect(windowData->win32.hWnd, &winRect);
HMONITOR monitor = MonitorFromPoint((POINT){winRect.left, winRect.top}, MONITOR_DEFAULTTOPRIMARY);
mp_rect frame = mp_window_get_frame_rect(window);
HMONITOR monitor = MonitorFromWindow(windowData->win32.hWnd, MONITOR_DEFAULTTOPRIMARY);
if(monitor)
{
MONITORINFO monitorInfo = {.cbSize = sizeof(MONITORINFO)};
GetMonitorInfoW(monitor, &monitorInfo);
int monW = monitorInfo.rcWork.right - monitorInfo.rcWork.left;
int monH = monitorInfo.rcWork.bottom - monitorInfo.rcWork.top;
int winW = winRect.right - winRect.left;
int winH = winRect.bottom - winRect.top;
int dpiX, dpiY;
GetDpiForMonitor(monitor, MDT_EFFECTIVE_DPI, &dpiX, &dpiY);
f32 scaleX = dpiX/96.;
f32 scaleY = dpiY/96.;
int winX = 0.5*(monW-winW);
int winY = 0.5*(monW-winW);
f32 monX = monitorInfo.rcWork.left/scaleX;
f32 monY = monitorInfo.rcWork.top/scaleY;
f32 monW = (monitorInfo.rcWork.right - monitorInfo.rcWork.left)/scaleX;
f32 monH = (monitorInfo.rcWork.bottom - monitorInfo.rcWork.top)/scaleY;
SetWindowPos(windowData->win32.hWnd, NULL, winX, winY, winW, winH, SWP_NOZORDER|SWP_NOACTIVATE);
frame.x = monX + 0.5*(monW - frame.w);
frame.y = monY + 0.5*(monH - frame.h);
mp_window_set_frame_rect(window, frame);
}
}
}