86 lines
3.4 KiB
C
86 lines
3.4 KiB
C
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// 7 april 2015
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#include "uipriv_windows.h"
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/*
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all container windows (including the message-only window, hence this is not in container_windows.c) have to call the sharedWndProc() to ensure messages go in the right place and control colors are handled properly
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*/
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/*
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all controls that have events receive the events themselves through subclasses
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to do this, all container windows (including the message-only window; see http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q104069) forward WM_COMMAND to each control with this function, WM_NOTIFY with forwardNotify, etc.
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*/
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static LRESULT forwardCommand(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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HWND control = (HWND) lParam;
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// don't generate an event if the control (if there is one) is unparented (a child of the initial parent window)
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if (control != NULL && IsChild(initialParent, control) == 0)
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return SendMessageW(control, msgCOMMAND, wParam, lParam);
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return DefWindowProcW(hwnd, uMsg, wParam, lParam);
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}
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static LRESULT forwardNotify(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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NMHDR *nmhdr = (NMHDR *) lParam;
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HWND control = nmhdr->hwndFrom;
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// don't generate an event if the control (if there is one) is unparented (a child of the initial parent window)
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if (control != NULL && IsChild(initialParent, control) == 0)
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return SendMessageW(control, msgNOTIFY, wParam, lParam);
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return DefWindowProcW(hwnd, uMsg, wParam, lParam);
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}
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BOOL sharedWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT *lResult)
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{
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switch (uMsg) {
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case WM_COMMAND:
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*lResult = forwardCommand(hwnd, uMsg, wParam, lParam);
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return TRUE;
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case WM_NOTIFY:
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*lResult = forwardNotify(hwnd, uMsg, wParam, lParam);
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return TRUE;
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/*TODO case WM_CTLCOLORSTATIC:
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case WM_CTLCOLORBTN:
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// read-only TextFields and Textboxes are exempt
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// this is because read-only edit controls count under WM_CTLCOLORSTATIC
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if (windowClassOf((HWND) lParam, L"edit", NULL) == 0)
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if (textfieldReadOnly((HWND) lParam))
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return FALSE;
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if (SetBkMode((HDC) wParam, TRANSPARENT) == 0)
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xpanic("error setting transparent background mode to Labels", GetLastError());
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paintControlBackground((HWND) lParam, (HDC) wParam);
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*lResult = (LRESULT) hollowBrush;
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return TRUE;
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*/ }
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return FALSE;
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}
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// TODO add function names to errors
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void resize(uiControl *control, HWND parent, RECT r)
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{
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uiSizing d;
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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(parent);
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if (dc == NULL)
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logLastError("error getting DC for preferred size calculations");
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prevFont = (HFONT) SelectObject(dc, hMessageFont);
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if (prevFont == NULL)
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logLastError("error loading control font into device context for preferred size calculation");
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if (GetTextMetricsW(dc, &tm) == 0)
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logLastError("error getting text metrics for preferred size calculations");
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if (GetTextExtentPoint32W(dc, L"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz", 52, &size) == 0)
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logLastError("error getting text extent point for preferred size calculations");
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d.baseX = (int) ((size.cx / 26 + 1) / 2);
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d.baseY = (int) tm.tmHeight;
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d.internalLeading = tm.tmInternalLeading;
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if (SelectObject(dc, prevFont) != hMessageFont)
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logLastError("error restoring previous font into device context after preferred size calculations");
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if (ReleaseDC(parent, dc) == 0)
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logLastError("error releasing DC for preferred size calculations");
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(*(control->resize))(control, r.left, r.top, r.right - r.left, r.bottom - r.top, &d);
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}
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