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// 7 april 2015
#include "uipriv_windows.h"
struct button {
uiControl *c;
void (*onClicked)(uiControl *, void *);
void *onClickedData;
};
#define B(x) ((struct button *) (x))
static BOOL onWM_COMMAND(uiControl *c, WPARAM wParam, LPARAM lParam, void *data, LRESULT *lResult)
{
if (HIWORD(wParam) != BN_CLICKED)
return FALSE;
(*(B(data)->onClicked))(c, B(data)->onClickedData);
*lResult = 0;
return TRUE;
}
static BOOL onWM_NOTIFY(uiControl *c, WPARAM wParam, LPARAM lParam, void *data, LRESULT *lResult)
{
return FALSE;
}
// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
#define buttonHeight 14
static void preferredSize(uiControl *c, int baseX, int baseY, LONG internalLeading, intmax_t *width, intmax_t *height)
{
HWND hwnd;
SIZE size;
hwnd = (HWND) uiControlHandle(c);
// try the comctl32 version 6 way
size.cx = 0; // explicitly ask for ideal size
size.cy = 0;
if (SendMessageW(hwnd, BCM_GETIDEALSIZE, 0, (LPARAM) (&size)) != FALSE) {
*width = size.cx;
*height = size.cy;
return;
}
// that didn't work; fall back to using Microsoft's metrics
// Microsoft says to use a fixed width for all buttons; this isn't good enough
// use the text width instead, with some edge padding
*width = uiWindowsWindowTextWidth(hwnd) + (2 * GetSystemMetrics(SM_CXEDGE));
*height = uiDlgUnitToY(buttonHeight, baseY);
}
static void defaultOnClicked(uiControl *c, void *data)
{
// do nothing
}
// TODO destruction
uiControl *uiNewButton(const char *text)
{
struct button *b;
uiWindowsNewControlParams p;
WCHAR *wtext;
HWND hwnd;
b = uiNew(struct button);
p.dwExStyle = 0;
p.lpClassName = L"button";
p.dwStyle = BS_PUSHBUTTON | WS_TABSTOP;
p.hInstance = hInstance;
p.onWM_COMMAND = onWM_COMMAND;
p.onWM_NOTIFY = onWM_NOTIFY;
p.onCommandNotifyData = b;
p.preferredSize = preferredSize;
p.data = b;
b->c = uiWindowsNewControl(&p);
hwnd = (HWND) uiControlHandle(b->c);
wtext = toUTF16(text);
if (SetWindowTextW(hwnd, wtext) == 0)
logLastError("error setting button text in uiNewButton()");
uiFree(wtext);
SendMessageW(hwnd, WM_SETFONT, (WPARAM) hMessageFont, (LPARAM) TRUE);
b->onClicked = defaultOnClicked;
return b->c;
}
// TODO text
void uiButtonOnClicked(uiControl *c, void (*f)(uiControl *, void *), void *data)
{
struct button *b;
b = (struct button *) uiWindowsControlData(c);
b->onClicked = f;
b->onClickedData = data;
}
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