118 lines
3.2 KiB
C++
118 lines
3.2 KiB
C++
// 20 may 2015
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#include "uipriv_windows.hpp"
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// TODO no scrollbars? also not sure if true for combobox as well
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// we as Common Controls 6 users don't need to worry about the height of comboboxes; see http://blogs.msdn.com/b/oldnewthing/archive/2006/03/10/548537.aspx
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struct uiEditableCombobox {
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uiWindowsControl c;
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HWND hwnd;
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void (*onChanged)(uiEditableCombobox *, void *);
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void *onChangedData;
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};
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static BOOL onWM_COMMAND(uiControl *cc, HWND hwnd, WORD code, LRESULT *lResult)
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{
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uiEditableCombobox *c = uiEditableCombobox(cc);
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if (code == CBN_SELCHANGE) {
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// like on OS X, this is sent before the edit has been updated :(
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if (PostMessage(parentOf(hwnd),
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WM_COMMAND,
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MAKEWPARAM(GetWindowLongPtrW(hwnd, GWLP_ID), CBN_EDITCHANGE),
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(LPARAM) hwnd) == 0)
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logLastError(L"error posting CBN_EDITCHANGE after CBN_SELCHANGE");
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*lResult = 0;
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return TRUE;
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}
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if (code != CBN_EDITCHANGE)
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return FALSE;
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(*(c->onChanged))(c, c->onChangedData);
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*lResult = 0;
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return TRUE;
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}
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void uiEditableComboboxDestroy(uiControl *cc)
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{
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uiEditableCombobox *c = uiEditableCombobox(cc);
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uiWindowsUnregisterWM_COMMANDHandler(c->hwnd);
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uiWindowsEnsureDestroyWindow(c->hwnd);
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uiFreeControl(uiControl(c));
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}
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uiWindowsControlAllDefaultsExceptDestroy(uiEditableCombobox)
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// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
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#define comboboxWidth 107 /* this is actually the shorter progress bar width, but Microsoft only indicates as wide as necessary; LONGTERM */
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#define comboboxHeight 14 /* LONGTERM: is this too high? */
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static void uiEditableComboboxMinimumSize(uiWindowsControl *cc, int *width, int *height)
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{
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uiEditableCombobox *c = uiEditableCombobox(cc);
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uiWindowsSizing sizing;
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int x, y;
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x = comboboxWidth;
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y = comboboxHeight;
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uiWindowsGetSizing(c->hwnd, &sizing);
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uiWindowsSizingDlgUnitsToPixels(&sizing, &x, &y);
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*width = x;
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*height = y;
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}
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static void defaultOnChanged(uiEditableCombobox *c, void *data)
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{
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// do nothing
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}
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void uiEditableComboboxAppend(uiEditableCombobox *c, const char *text)
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{
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WCHAR *wtext;
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LRESULT res;
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wtext = toUTF16(text);
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res = SendMessageW(c->hwnd, CB_ADDSTRING, 0, (LPARAM) wtext);
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if (res == (LRESULT) CB_ERR)
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logLastError(L"error appending item to uiEditableCombobox");
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else if (res == (LRESULT) CB_ERRSPACE)
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logLastError(L"memory exhausted appending item to uiEditableCombobox");
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uiprivFree(wtext);
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}
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char *uiEditableComboboxText(uiEditableCombobox *c)
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{
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return uiWindowsWindowText(c->hwnd);
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}
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void uiEditableComboboxSetText(uiEditableCombobox *c, const char *text)
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{
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// does not trigger any notifications
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uiWindowsSetWindowText(c->hwnd, text);
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}
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void uiEditableComboboxOnChanged(uiEditableCombobox *c, void (*f)(uiEditableCombobox *c, void *data), void *data)
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{
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c->onChanged = f;
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c->onChangedData = data;
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}
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uiEditableCombobox *uiNewEditableCombobox(void)
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{
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uiEditableCombobox *c;
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uiWindowsNewControl(uiEditableCombobox, c);
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c->hwnd = uiWindowsEnsureCreateControlHWND(WS_EX_CLIENTEDGE,
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L"combobox", L"",
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CBS_DROPDOWN | WS_TABSTOP,
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hInstance, NULL,
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TRUE);
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uiWindowsRegisterWM_COMMANDHandler(c->hwnd, onWM_COMMAND, uiControl(c));
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uiEditableComboboxOnChanged(c, defaultOnChanged, NULL);
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return c;
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}
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