64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
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// 14 may 2015
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#include "uipriv_windows.hpp"
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// TODO rework the error handling
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void getSizing(HWND hwnd, uiWindowsSizing *sizing, HFONT font)
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{
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HDC dc;
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HFONT prevfont;
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TEXTMETRICW tm;
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SIZE size;
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dc = GetDC(hwnd);
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if (dc == NULL)
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logLastError(L"error getting DC");
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prevfont = (HFONT) SelectObject(dc, font);
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if (prevfont == NULL)
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logLastError(L"error loading control font into device context");
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ZeroMemory(&tm, sizeof (TEXTMETRICW));
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if (GetTextMetricsW(dc, &tm) == 0)
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logLastError(L"error getting text metrics");
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if (GetTextExtentPoint32W(dc, L"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz", 52, &size) == 0)
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logLastError(L"error getting text extent point");
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sizing->BaseX = (int) ((size.cx / 26 + 1) / 2);
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sizing->BaseY = (int) tm.tmHeight;
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sizing->InternalLeading = tm.tmInternalLeading;
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if (SelectObject(dc, prevfont) != font)
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logLastError(L"error restoring previous font into device context");
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if (ReleaseDC(hwnd, dc) == 0)
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logLastError(L"error releasing DC");
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}
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void uiWindowsGetSizing(HWND hwnd, uiWindowsSizing *sizing)
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{
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return getSizing(hwnd, sizing, hMessageFont);
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}
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#define dlgUnitsToX(dlg, baseX) MulDiv((dlg), (baseX), 4)
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#define dlgUnitsToY(dlg, baseY) MulDiv((dlg), (baseY), 8)
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void uiWindowsSizingDlgUnitsToPixels(uiWindowsSizing *sizing, int *x, int *y)
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{
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if (x != NULL)
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*x = dlgUnitsToX(*x, sizing->BaseX);
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if (y != NULL)
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*y = dlgUnitsToY(*y, sizing->BaseY);
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}
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// from https://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing and https://msdn.microsoft.com/en-us/library/windows/desktop/bb226818%28v=vs.85%29.aspx
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// this X value is really only for buttons but I don't see a better one :/
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#define winXPadding 4
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// TODO is this too much?
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#define winYPadding 4
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void uiWindowsSizingStandardPadding(uiWindowsSizing *sizing, int *x, int *y)
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{
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if (x != NULL)
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*x = dlgUnitsToX(winXPadding, sizing->BaseX);
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if (y != NULL)
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*y = dlgUnitsToY(winYPadding, sizing->BaseY);
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}
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