Files
foobar2000-sdk/foobar2000/ATLHelpers/WindowPositionUtils.h

324 lines
9.7 KiB
C++

#pragma once
#include "../helpers/win32_misc.h"
static BOOL AdjustWindowRectHelper(CWindow wnd, CRect & rc) {
const DWORD style = wnd.GetWindowLong(GWL_STYLE), exstyle = wnd.GetWindowLong(GWL_EXSTYLE);
return AdjustWindowRectEx(&rc,style,(style & WS_POPUP) ? wnd.GetMenu() != NULL : FALSE, exstyle);
}
static void AdjustRectToScreenArea(CRect & rc, CRect rcParent) {
HMONITOR monitor = MonitorFromRect(rcParent,MONITOR_DEFAULTTONEAREST);
MONITORINFO mi = {sizeof(MONITORINFO)};
if (GetMonitorInfo(monitor,&mi)) {
const CRect clip = mi.rcWork;
if (rc.right > clip.right) rc.OffsetRect(clip.right - rc.right, 0);
if (rc.bottom > clip.bottom) rc.OffsetRect(0, clip.bottom - rc.bottom);
if (rc.left < clip.left) rc.OffsetRect(clip.left - rc.left, 0);
if (rc.top < clip.top) rc.OffsetRect(0, clip.top - rc.top);
}
}
static BOOL GetClientRectAsSC(CWindow wnd, CRect & rc) {
CRect temp;
if (!wnd.GetClientRect(temp)) return FALSE;
if (temp.IsRectNull()) return FALSE;
if (!wnd.ClientToScreen(temp)) return FALSE;
rc = temp;
return TRUE;
}
static BOOL CenterWindowGetRect(CWindow wnd, CWindow wndParent, CRect & out) {
CRect parent, child;
if (!wndParent.GetWindowRect(&parent) || !wnd.GetWindowRect(&child)) return FALSE;
{
CPoint origin = parent.CenterPoint();
origin.Offset( - child.Width() / 2, - child.Height() / 2);
child.OffsetRect( origin - child.TopLeft() );
}
AdjustRectToScreenArea(child, parent);
out = child;
return TRUE;
}
static BOOL CenterWindowAbove(CWindow wnd, CWindow wndParent) {
CRect rc;
if (!CenterWindowGetRect(wnd, wndParent, rc)) return FALSE;
return wnd.SetWindowPos(NULL,rc,SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE);
}
static BOOL ShowWindowCentered(CWindow wnd,CWindow wndParent) {
CRect rc;
if (!CenterWindowGetRect(wnd, wndParent, rc)) return FALSE;
return wnd.SetWindowPos(HWND_TOP,rc,SWP_NOSIZE | SWP_SHOWWINDOW);
}
class cfgWindowSize : public cfg_var {
public:
cfgWindowSize(const GUID & p_guid) : cfg_var(p_guid), m_width(~0), m_height(~0) {}
void get_data_raw(stream_writer * p_stream,abort_callback & p_abort) {
stream_writer_formatter<>(*p_stream,p_abort) << m_width << m_height;
}
void set_data_raw(stream_reader * p_stream,t_size p_sizehint,abort_callback & p_abort) {
stream_reader_formatter<>(*p_stream,p_abort) >> m_width >> m_height;
}
t_uint32 m_width, m_height;
};
class cfgWindowSizeTracker {
public:
cfgWindowSizeTracker(cfgWindowSize & p_var) : m_var(p_var), m_applied(false) {}
bool Apply(HWND p_wnd) {
bool retVal = false;
m_applied = false;
if (m_var.m_width != ~0 && m_var.m_height != ~0) {
CRect rect (0,0,m_var.m_width,m_var.m_height);
if (AdjustWindowRectHelper(p_wnd, rect)) {
SetWindowPos(p_wnd,NULL,0,0,rect.right-rect.left,rect.bottom-rect.top,SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOZORDER);
retVal = true;
}
}
m_applied = true;
return retVal;
}
BOOL ProcessWindowMessage(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT & lResult) {
if (uMsg == WM_SIZE && m_applied) {
if (lParam != 0) {
m_var.m_width = (short)LOWORD(lParam); m_var.m_height = (short)HIWORD(lParam);
}
}
return FALSE;
}
private:
cfgWindowSize & m_var;
bool m_applied;
};
class cfgDialogSizeTracker : public cfgWindowSizeTracker {
public:
cfgDialogSizeTracker(cfgWindowSize & p_var) : cfgWindowSizeTracker(p_var) {}
BOOL ProcessWindowMessage(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT & lResult) {
if (cfgWindowSizeTracker::ProcessWindowMessage(hWnd, uMsg, wParam, lParam, lResult)) return TRUE;
if (uMsg == WM_INITDIALOG) Apply(hWnd);
return FALSE;
}
};
class cfgDialogPositionData {
public:
cfgDialogPositionData() : m_width(sizeInvalid), m_height(sizeInvalid), m_posX(posInvalid), m_posY(posInvalid) {}
void OverrideDefaultSize(t_uint32 width, t_uint32 height) {
if (m_width == sizeInvalid && m_height == sizeInvalid) {
m_width = width; m_height = height; m_posX = m_posY = posInvalid;
m_dpiX = m_dpiY = 96;
}
}
void AddWindow(CWindow wnd) {
TryFetchConfig();
m_windows += wnd;
ApplyConfig(wnd);
}
void RemoveWindow(CWindow wnd) {
if (m_windows.contains(wnd)) {
StoreConfig(wnd); m_windows -= wnd;
}
}
void FetchConfig() {TryFetchConfig();}
private:
BOOL ApplyConfig(CWindow wnd) {
ApplyDPI();
CWindow wndParent = wnd.GetParent();
UINT flags = SWP_NOACTIVATE | SWP_NOZORDER;
CRect rc;
if (!GetClientRectAsSC(wnd,rc)) return FALSE;
if (m_width != sizeInvalid && m_height != sizeInvalid && (wnd.GetWindowLong(GWL_STYLE) & WS_SIZEBOX) != 0) {
rc.right = rc.left + m_width;
rc.bottom = rc.top + m_height;
} else {
flags |= SWP_NOSIZE;
}
if (wndParent != NULL) {
CRect rcParent;
if (GetParentWndRect(wndParent, rcParent)) {
if (m_posX != posInvalid && m_posY != posInvalid) {
rc.MoveToXY( rcParent.TopLeft() + CPoint(m_posX, m_posY) );
} else {
CPoint center = rcParent.CenterPoint();
rc.MoveToXY( center.x - rc.Width() / 2, center.y - rc.Height() / 2);
}
}
}
if (!AdjustWindowRectHelper(wnd, rc)) return FALSE;
DeOverlap(wnd, rc);
{
CRect rcAdjust(0,0,1,1);
if (wndParent != NULL) {
CRect temp;
if (wndParent.GetWindowRect(temp)) rcAdjust = temp;
}
AdjustRectToScreenArea(rc, rcAdjust);
}
return wnd.SetWindowPos(NULL, rc, flags);
}
struct DeOverlapState {
CWindow m_thisWnd;
CPoint m_topLeft;
bool m_match;
};
static BOOL CALLBACK MyEnumChildProc(HWND wnd, LPARAM param) {
DeOverlapState * state = reinterpret_cast<DeOverlapState*>(param);
if (wnd != state->m_thisWnd && IsWindowVisible(wnd) ) {
CRect rc;
if (GetWindowRect(wnd, rc)) {
if (rc.TopLeft() == state->m_topLeft) {
state->m_match = true; return FALSE;
}
}
}
return TRUE;
}
static bool DeOverlapTest(CWindow wnd, CPoint topLeft) {
DeOverlapState state = {};
state.m_thisWnd = wnd; state.m_topLeft = topLeft; state.m_match = false;
EnumThreadWindows(GetCurrentThreadId(), MyEnumChildProc, reinterpret_cast<LPARAM>(&state));
return state.m_match;
}
static int DeOverlapDelta() {
return pfc::max_t<int>(GetSystemMetrics(SM_CYCAPTION),1);
}
static void DeOverlap(CWindow wnd, CRect & rc) {
const int delta = DeOverlapDelta();
for(;;) {
if (!DeOverlapTest(wnd, rc.TopLeft())) break;
rc.OffsetRect(delta,delta);
}
}
BOOL StoreConfig(CWindow wnd) {
CRect rc;
if (!GetClientRectAsSC(wnd, rc)) return FALSE;
const CSize DPI = QueryScreenDPIEx();
m_dpiX = DPI.cx; m_dpiY = DPI.cy;
m_width = rc.Width(); m_height = rc.Height();
m_posX = m_posY = posInvalid;
CWindow parent = wnd.GetParent();
if (parent != NULL) {
CRect rcParent;
if (GetParentWndRect(parent, rcParent)) {
m_posX = rc.left - rcParent.left;
m_posY = rc.top - rcParent.top;
}
}
return TRUE;
}
void TryFetchConfig() {
for(auto walk = m_windows.cfirst(); walk.is_valid(); ++walk) {
if (StoreConfig(*walk)) break;
}
}
void ApplyDPI() {
const CSize screenDPI = QueryScreenDPIEx();
if (screenDPI.cx == 0 || screenDPI.cy == 0) {
PFC_ASSERT(!"Should not get here - something seriously wrong with the OS");
return;
}
if (m_dpiX != dpiInvalid && m_dpiX != screenDPI.cx) {
if (m_width != sizeInvalid) m_width = MulDiv(m_width, screenDPI.cx, m_dpiX);
if (m_posX != posInvalid) m_posX = MulDiv(m_posX, screenDPI.cx, m_dpiX);
}
if (m_dpiY != dpiInvalid && m_dpiY != screenDPI.cy) {
if (m_height != sizeInvalid) m_height = MulDiv(m_height, screenDPI.cy, m_dpiY);
if (m_posY != posInvalid) m_posY = MulDiv(m_posY, screenDPI.cy, m_dpiY);
}
m_dpiX = screenDPI.cx;
m_dpiY = screenDPI.cy;
}
CSize GrabDPI() const {
CSize DPI(96,96);
if (m_dpiX != dpiInvalid) DPI.cx = m_dpiX;
if (m_dpiY != dpiInvalid) DPI.cy = m_dpiY;
return DPI;
}
static BOOL GetParentWndRect(CWindow wndParent, CRect & rc) {
if (!wndParent.IsIconic()) {
return wndParent.GetWindowRect(rc);
}
WINDOWPLACEMENT pl = {sizeof(pl)};
if (!wndParent.GetWindowPlacement(&pl)) return FALSE;
rc = pl.rcNormalPosition;
return TRUE;
}
pfc::avltree_t<CWindow> m_windows;
public:
t_uint32 m_width, m_height;
t_int32 m_posX, m_posY;
t_uint32 m_dpiX, m_dpiY;
enum {
posInvalid = 0x80000000,
sizeInvalid = 0xFFFFFFFF,
dpiInvalid = 0,
};
};
FB2K_STREAM_READER_OVERLOAD(cfgDialogPositionData) {
stream >> value.m_width >> value.m_height;
try {
stream >> value.m_posX >> value.m_posY >> value.m_dpiX >> value.m_dpiY;
} catch(exception_io_data) {
value.m_posX = value.m_posY = cfgDialogPositionData::posInvalid;
value.m_dpiX = value.m_dpiY = cfgDialogPositionData::dpiInvalid;
}
return stream;
}
FB2K_STREAM_WRITER_OVERLOAD(cfgDialogPositionData) {
return stream << value.m_width << value.m_height << value.m_posX << value.m_posY << value.m_dpiX << value.m_dpiY;
}
class cfgDialogPosition : public cfgDialogPositionData, public cfg_var {
public:
cfgDialogPosition(const GUID & id) : cfg_var(id) {}
void get_data_raw(stream_writer * p_stream,abort_callback & p_abort) {FetchConfig(); stream_writer_formatter<>(*p_stream, p_abort) << *pfc::implicit_cast<cfgDialogPositionData*>(this);}
void set_data_raw(stream_reader * p_stream,t_size p_sizehint,abort_callback & p_abort) {stream_reader_formatter<>(*p_stream, p_abort) >> *pfc::implicit_cast<cfgDialogPositionData*>(this);}
};
class cfgDialogPositionTracker {
public:
cfgDialogPositionTracker(cfgDialogPosition & p_var) : m_var(p_var) {}
~cfgDialogPositionTracker() {Cleanup();}
BOOL ProcessWindowMessage(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT & lResult) {
if (uMsg == WM_CREATE || uMsg == WM_INITDIALOG) {
Cleanup();
m_wnd = hWnd;
m_var.AddWindow(m_wnd);
} else if (uMsg == WM_DESTROY) {
PFC_ASSERT( hWnd == m_wnd );
Cleanup();
}
return FALSE;
}
private:
void Cleanup() {
if (m_wnd != NULL) {
m_var.RemoveWindow(m_wnd);
m_wnd = NULL;
}
}
cfgDialogPosition & m_var;
CWindow m_wnd;
};