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#include "alfpriv.h"
/* BUTTON */
static LRESULT CALLBACK
ALF__ButtonSubclassProc(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 hdc = GetDC(hwnd);
HFONT font = (HFONT)SendMessage(hwnd, WM_GETFONT, 0, 0);
HFONT oldFont = 0;
if (font)
oldFont = SelectFont(hdc, font);
// calc drawtext style
DWORD style = GetWindowLong(hwnd, GWL_STYLE);
UINT format = DT_LEFT | DT_EXPANDTABS | DT_CALCRECT;
if ((style & BS_MULTILINE) == 0)
format |= DT_SINGLELINE;
RECT r = { 0, 0, 0x7FFFFFFF, 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(hdc, textbuf, -1, &r, format);
HeapFree(GetProcessHeap(), 0, textbuf);
int xpadding = app->compatFn->GetSystemMetricsForDpi(SM_CXEDGE,
ALF_CentipointsToPixels(GetParent(hwnd), 7200)) * 2 + 6;
int ypadding = app->compatFn->GetSystemMetricsForDpi(SM_CYEDGE,
ALF_CentipointsToPixels(GetParent(hwnd), 7200)) * 2 + 6;
SIZE *pSize = (SIZE*)(void*)lParam;
if (pSize->cx < r.right - r.left + xpadding) {
pSize->cx = r.right - r.left + xpadding;
}
if (pSize->cy < r.bottom - r.top + ypadding) {
pSize->cy = r.bottom - r.top + ypadding;
}
if (pSize->cx < pSize->cy) {
pSize->cx = pSize->cy;
}
if (font)
SelectFont(hdc, oldFont);
ReleaseDC(hwnd, hdc);
} else if (uMsg == ALF_WM_APPLYSIZE) {
// HACK: a themed button contains a 1px margin. An unthemed button
// does not, so we add one.
RECT *p = (RECT *)lParam;
int padding = app->compatFn->IsAppThemed() ? 0 : 1;
return (LRESULT)DeferWindowPos((HDWP)wParam,
hwnd, NULL,
p->left, p->top + padding,
p->right - p->left, p->bottom - p->top - 2*padding,
SWP_NOZORDER|SWP_NOACTIVATE);
} else if (uMsg == WM_DESTROY) {
app->compatFn->RemoveWindowSubclass(hwnd, ALF__ButtonSubclassProc, 0);
}
return app->compatFn->DefSubclassProc(hwnd, uMsg, wParam, lParam);
}
HWND
ALF_AddButton(HWND win, WORD id, UINT x, UINT y, const TCHAR *text)
{
HWND hwndButton = CreateWindowEx(0,
TEXT("BUTTON"),
text,
WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_PUSHBUTTON | BS_MULTILINE,
0, 0, 100, 100,
win,
(HMENU)(int)id,
(HINSTANCE)GetWindowLongPtr(win, GWLP_HINSTANCE),
NULL);
ALFAPP app = ALF_ApplicationFromWindow(win);
app->compatFn->SetWindowSubclass(hwndButton, ALF__ButtonSubclassProc, 0, (DWORD_PTR)app);
SetWindowPos(hwndButton, NULL, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED);
ALFAddWidgetParams p;
ZeroMemory(&p, sizeof(p));
p.hwnd = hwndButton;
p.x = x;
p.y = y;
p.width = 0;
p.height = 0;
p.flags = ALF_QUERYSIZE | ALF_MESSAGEFONT | ALF_APPLYSIZE;
ALF_AddWidgetEx(win, &p);
return hwndButton;
}
void
ALF_SetDefaultButton(HWND win, WORD id)
{
SendMessage(win, DM_SETDEFID, (WPARAM)id, 0);
}
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