109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
// 7 april 2015
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#include "uipriv_windows.h"
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struct uiCheckbox {
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uiWindowsControl c;
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HWND hwnd;
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void (*onToggled)(uiCheckbox *, void *);
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void *onToggledData;
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};
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uiWindowsDefineControlWithOnDestroy(
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uiCheckbox, // type name
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uiCheckboxType, // type function
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uiWindowsUnregisterWM_COMMANDHandler(this->hwnd); // on destroy
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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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uiCheckbox *c = uiCheckbox(cc);
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WPARAM check;
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if (code != BN_CLICKED)
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return FALSE;
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// we didn't use BS_AUTOCHECKBOX (http://blogs.msdn.com/b/oldnewthing/archive/2014/05/22/10527522.aspx) so we have to manage the check state ourselves
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check = BST_CHECKED;
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if (SendMessage(c->hwnd, BM_GETCHECK, 0, 0) == BST_CHECKED)
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check = BST_UNCHECKED;
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SendMessage(c->hwnd, BM_SETCHECK, check, 0);
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(*(c->onToggled))(c, c->onToggledData);
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*lResult = 0;
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return TRUE;
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}
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// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
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#define checkboxHeight 10
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// from http://msdn.microsoft.com/en-us/library/windows/desktop/bb226818%28v=vs.85%29.aspx
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#define checkboxXFromLeftOfBoxToLeftOfLabel 12
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static void minimumSize(uiWindowsControl *cc, uiWindowsSizing *d, intmax_t *width, intmax_t *height)
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{
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uiCheckbox *c = uiCheckbox(cc);
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*width = uiWindowsDlgUnitsToX(checkboxXFromLeftOfBoxToLeftOfLabel, d->BaseX) + uiWindowsWindowTextWidth(c->hwnd);
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*height = uiWindowsDlgUnitsToY(checkboxHeight, d->BaseY);
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}
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static void defaultOnToggled(uiCheckbox *c, void *data)
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{
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// do nothing
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}
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char *uiCheckboxText(uiCheckbox *c)
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{
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return uiWindowsUtilText(c->hwnd);
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}
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void uiCheckboxSetText(uiCheckbox *c, const char *text)
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{
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uiWindowsUtilSetText(c->hwnd, text);
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// changing the text might necessitate a change in the checkbox's size
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uiWindowsControlQueueRelayout(uiWindowsControl(c));
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}
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void uiCheckboxOnToggled(uiCheckbox *c, void (*f)(uiCheckbox *, void *), void *data)
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{
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c->onToggled = f;
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c->onToggledData = data;
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}
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int uiCheckboxChecked(uiCheckbox *c)
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{
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return SendMessage(c->hwnd, BM_GETCHECK, 0, 0) == BST_CHECKED;
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}
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void uiCheckboxSetChecked(uiCheckbox *c, int checked)
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{
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WPARAM check;
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check = BST_CHECKED;
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if (!checked)
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check = BST_UNCHECKED;
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SendMessage(c->hwnd, BM_SETCHECK, check, 0);
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}
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uiCheckbox *uiNewCheckbox(const char *text)
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{
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uiCheckbox *c;
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WCHAR *wtext;
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c = (uiCheckbox *) uiNewControl(uiCheckboxType());
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wtext = toUTF16(text);
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c->hwnd = uiWindowsEnsureCreateControlHWND(0,
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L"button", wtext,
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BS_CHECKBOX | WS_TABSTOP,
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hInstance, NULL,
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TRUE);
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uiFree(wtext);
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uiWindowsRegisterWM_COMMANDHandler(c->hwnd, onWM_COMMAND, uiControl(c));
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uiCheckboxOnToggled(c, defaultOnToggled, NULL);
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uiWindowsFinishNewControl(c, uiCheckbox);
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return c;
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}
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