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#include "alfpriv.h"
/* LABEL */
static
int ALF__LabelTopPadding(HWND hwnd, ALFAPP app)
{
// some pixels on top to align with the edit control
// see also: alfedit.cpp
return app->compatFn->GetSystemMetricsForDpi(
SM_CYEDGE, ALF_CentipointsToPixels(GetParent(hwnd), 7200))
+ 1 /* internal padding in edit control */
+ 1 /* external padding around edit control */;
}
static LRESULT CALLBACK
ALF__LabelSubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
{
(void)uIdSubclass;
(void)dwRefData;
ALFAPP app = (ALFAPP)dwRefData;
if (uMsg == ALF_WM_QUERYSIZE) {
HDC hdcLabel = GetDC(hwnd);
HFONT font = (HFONT)SendMessage(hwnd, WM_GETFONT, 0, 0);
HFONT oldFont = 0;
if (font)
oldFont = SelectFont(hdcLabel, font);
// calc drawtext style
DWORD style = GetWindowLong(hwnd, GWL_STYLE);
UINT format = DT_LEFT | DT_EXPANDTABS | DT_CALCRECT;
if (style & SS_NOPREFIX)
format |= DT_NOPREFIX;
if (style & SS_EDITCONTROL)
format |= DT_EDITCONTROL;
if (style & SS_ENDELLIPSIS || style & SS_PATHELLIPSIS || style & SS_WORDELLIPSIS)
format |= DT_SINGLELINE;
RECT r = { 0, 0, 100, 100 };
int textlen = GetWindowTextLength(hwnd);
TCHAR *textbuf = (TCHAR*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY|HEAP_GENERATE_EXCEPTIONS, (textlen + 1)*sizeof(TCHAR));
GetWindowText(hwnd, textbuf, textlen+1);
DrawText(hdcLabel, textbuf, -1, &r, format);
HeapFree(GetProcessHeap(), 0, textbuf);
SIZE *pSize = (SIZE*)(void*)lParam;
if (pSize->cx == 0)
pSize->cx = r.right - r.left;
if (pSize->cy == 0)
pSize->cy = r.bottom - r.top + ALF__LabelTopPadding(hwnd, app);
if (font)
SelectFont(hdcLabel, oldFont);
ReleaseDC(hwnd, hdcLabel);
} else if (uMsg == ALF_WM_APPLYSIZE) {
RECT *p = (RECT *)lParam;
int topPadding = ALF__LabelTopPadding(hwnd, app);
return (LRESULT)DeferWindowPos((HDWP)wParam,
hwnd, NULL,
p->left, p->top + topPadding,
p->right - p->left, p->bottom - p->top - topPadding,
SWP_NOZORDER|SWP_NOACTIVATE);
} else if (uMsg == WM_DESTROY) {
app->compatFn->RemoveWindowSubclass(hwnd, ALF__LabelSubclassProc, 0);
}
return app->compatFn->DefSubclassProc(hwnd, uMsg, wParam, lParam);
}
HWND
ALF_AddLabel(HWND win, WORD id, UINT x, UINT y, const TCHAR *text)
{
HWND hwndLabel = CreateWindow(TEXT("STATIC"),
text,
WS_CHILD | WS_VISIBLE | SS_LEFTNOWORDWRAP,
0, 0, 100, 100,
win,
(HMENU)(int)id,
(HINSTANCE)GetWindowLongPtr(win, GWLP_HINSTANCE),
NULL);
ALFAPP app = ALF_ApplicationFromWindow(win);
app->compatFn->SetWindowSubclass(hwndLabel, ALF__LabelSubclassProc, 0, (DWORD_PTR)app);
ALFAddWidgetParams p;
ZeroMemory(&p, sizeof(p));
p.hwnd = hwndLabel;
p.x = x;
p.y = y;
p.width = 0;
p.height = 0;
p.flags = ALF_QUERYSIZE | ALF_APPLYSIZE | ALF_MESSAGEFONT;
ALF_AddWidgetEx(win, &p);
return hwndLabel;
}
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