libui/windows/label.cpp

// 11 april 2015
#include "uipriv_windows.hpp"

struct uiLabel {
	uiWindowsControl c;
	HWND hwnd;
};

uiWindowsControlAllDefaults(uiLabel)

// via http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
#define labelHeight 8

static void uiLabelMinimumSize(uiWindowsControl *c, int *width, int *height)
{
	uiLabel *l = uiLabel(c);
	uiWindowsSizing sizing;
	int y;

	*width = uiWindowsWindowTextWidth(l->hwnd);
	y = labelHeight;
	uiWindowsGetSizing(l->hwnd, &sizing);
	uiWindowsSizingDlgUnitsToPixels(&sizing, NULL, &y);
	*height = y;
}

char *uiLabelText(uiLabel *l)
{
	return uiWindowsWindowText(l->hwnd);
}

void uiLabelSetText(uiLabel *l, const char *text)
{
	uiWindowsSetWindowText(l->hwnd, text);
	// changing the text might necessitate a change in the label's size
	uiWindowsControlMinimumSizeChanged(uiWindowsControl(l));
}

uiLabel *uiNewLabel(const char *text)
{
	uiLabel *l;
	WCHAR *wtext;

	uiWindowsNewControl(uiLabel, l);

	wtext = toUTF16(text);
	l->hwnd = uiWindowsEnsureCreateControlHWND(0,
		L"static", wtext,
		// SS_LEFTNOWORDWRAP clips text past the end; SS_NOPREFIX avoids accelerator translation
		// controls are vertically aligned to the top by default (thanks Xeek in irc.freenode.net/#winapi)
		SS_LEFTNOWORDWRAP | SS_NOPREFIX,
		hInstance, NULL,
		TRUE);
	uiprivFree(wtext);

	return l;
}