123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
// 7 april 2015
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#include "uipriv_windows.h"
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struct button {
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uiButton b;
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HWND hwnd;
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void (*onClicked)(uiButton *, void *);
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void *onClickedData;
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void (*baseCommitDestroy)(uiControl *);
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};
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uiDefineControlType(uiButton, uiTypeButton, struct button)
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static BOOL onWM_COMMAND(uiControl *c, HWND hwnd, WORD code, LRESULT *lResult)
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{
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struct button *b = (struct button *) c;
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if (code != BN_CLICKED)
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return FALSE;
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(*(b->onClicked))(uiButton(b), b->onClickedData);
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*lResult = 0;
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return TRUE;
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}
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static void buttonCommitDestroy(uiControl *c)
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{
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struct button *b = (struct button *) c;
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uiWindowsUnregisterWM_COMMANDHandler(b->hwnd);
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(*(b->baseCommitDestroy))(uiControl(b));
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}
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static uintptr_t buttonHandle(uiControl *c)
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{
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struct button *b = (struct button *) c;
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return (uintptr_t) (b->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 buttonHeight 14
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static void buttonPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
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{
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struct button *b = (struct button *) c;
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SIZE size;
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// try the comctl32 version 6 way
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size.cx = 0; // explicitly ask for ideal size
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size.cy = 0;
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if (SendMessageW(b->hwnd, BCM_GETIDEALSIZE, 0, (LPARAM) (&size)) != FALSE) {
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*width = size.cx;
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*height = size.cy;
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return;
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}
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// that didn't work; fall back to using Microsoft's metrics
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// Microsoft says to use a fixed width for all buttons; this isn't good enough
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// use the text width instead, with some edge padding
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*width = uiWindowsWindowTextWidth(b->hwnd) + (2 * GetSystemMetrics(SM_CXEDGE));
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*height = uiWindowsDlgUnitsToY(buttonHeight, d->Sys->BaseY);
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}
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static void defaultOnClicked(uiButton *b, void *data)
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{
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// do nothing
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}
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static char *buttonText(uiButton *bb)
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{
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struct button *b = (struct button *) bb;
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return uiWindowsUtilText(b->hwnd);
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}
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static void buttonSetText(uiButton *bb, const char *text)
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{
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struct button *b = (struct button *) bb;
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uiWindowsUtilSetText(b->hwnd, text);
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// changing the text might necessitate a change in the button's size
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uiControlQueueResize(uiControl(b));
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}
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static void buttonOnClicked(uiButton *bb, void (*f)(uiButton *, void *), void *data)
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{
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struct button *b = (struct button *) bb;
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b->onClicked = f;
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b->onClickedData = data;
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}
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uiButton *uiNewButton(const char *text)
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{
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struct button *b;
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WCHAR *wtext;
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b = (struct button *) uiWindowsNewSingleHWNDControl(uiTypeButton());
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wtext = toUTF16(text);
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b->hwnd = uiWindowsUtilCreateControlHWND(0,
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L"button", wtext,
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BS_PUSHBUTTON | 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(b->hwnd, onWM_COMMAND, uiControl(b));
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b->onClicked = defaultOnClicked;
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uiControl(b)->Handle = buttonHandle;
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uiControl(b)->PreferredSize = buttonPreferredSize;
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b->baseCommitDestroy = uiControl(b)->CommitDestroy;
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uiControl(b)->CommitDestroy = buttonCommitDestroy;
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uiButton(b)->Text = buttonText;
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uiButton(b)->SetText = buttonSetText;
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uiButton(b)->OnClicked = buttonOnClicked;
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return uiButton(b);
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}
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