140 lines
3.6 KiB
C
140 lines
3.6 KiB
C
// 7 april 2015
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#include "uipriv_windows.h"
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struct checkbox {
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uiCheckbox 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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void (*baseCommitDestroy)(uiControl *);
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};
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uiDefineControlType(uiCheckbox, uiTypeCheckbox, struct checkbox)
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static BOOL onWM_COMMAND(uiControl *cc, HWND hwnd, WORD code, LRESULT *lResult)
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{
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struct checkbox *c = (struct checkbox *) 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 (see controls_windows.go) 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))(uiCheckbox(c), c->onToggledData);
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*lResult = 0;
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return TRUE;
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}
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static void checkboxCommitDestroy(uiControl *cc)
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{
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struct checkbox *c = (struct checkbox *) cc;
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uiWindowsUnregisterWM_COMMANDHandler(c->hwnd);
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(*(c->baseCommitDestroy))(uiControl(c));
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}
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static uintptr_t checkboxHandle(uiControl *cc)
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{
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struct checkbox *c = (struct checkbox *) cc;
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return (uintptr_t) (c->hwnd);
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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 checkboxPreferredSize(uiControl *cc, uiSizing *d, intmax_t *width, intmax_t *height)
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{
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struct checkbox *c = (struct checkbox *) cc;
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*width = uiWindowsDlgUnitsToX(checkboxXFromLeftOfBoxToLeftOfLabel, d->Sys->BaseX) + uiWindowsWindowTextWidth(c->hwnd);
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*height = uiWindowsDlgUnitsToY(checkboxHeight, d->Sys->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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static char *checkboxText(uiCheckbox *cc)
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{
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struct checkbox *c = (struct checkbox *) cc;
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return uiWindowsUtilText(c->hwnd);
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}
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static void checkboxSetText(uiCheckbox *cc, const char *text)
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{
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struct checkbox *c = (struct checkbox *) cc;
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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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uiControlQueueResize(uiControl(c));
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}
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static void checkboxOnToggled(uiCheckbox *cc, void (*f)(uiCheckbox *, void *), void *data)
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{
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struct checkbox *c = (struct checkbox *) cc;
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c->onToggled = f;
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c->onToggledData = data;
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}
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static int checkboxChecked(uiCheckbox *cc)
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{
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struct checkbox *c = (struct checkbox *) cc;
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return SendMessage(c->hwnd, BM_GETCHECK, 0, 0) == BST_CHECKED;
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}
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static void checkboxSetChecked(uiCheckbox *cc, int checked)
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{
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struct checkbox *c = (struct checkbox *) cc;
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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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struct checkbox *c;
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WCHAR *wtext;
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c = (struct checkbox *) uiWindowsNewSingleHWNDControl(uiTypeCheckbox());
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wtext = toUTF16(text);
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c->hwnd = uiWindowsUtilCreateControlHWND(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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c->onToggled = defaultOnToggled;
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uiControl(c)->Handle = checkboxHandle;
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uiControl(c)->PreferredSize = checkboxPreferredSize;
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c->baseCommitDestroy = uiControl(c)->CommitDestroy;
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uiControl(c)->CommitDestroy = checkboxCommitDestroy;
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uiCheckbox(c)->Text = checkboxText;
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uiCheckbox(c)->SetText = checkboxSetText;
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uiCheckbox(c)->OnToggled = checkboxOnToggled;
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uiCheckbox(c)->Checked = checkboxChecked;
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uiCheckbox(c)->SetChecked = checkboxSetChecked;
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return uiCheckbox(c);
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}
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