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#include "alfpriv.h"
TCHAR *_alf_panelClass = NULL;
typedef struct {
ALFLayout layout;
HFONT font;
} ALFPanelPriv;
static void
ALF_Panel_IntializePriv(ALFPanelPriv *priv)
{
ALF_Layout_Init(&priv->layout);
}
static void
ALF_Panel_ClearPriv(ALFPanelPriv *priv)
{
ALF_Layout_Clear(&priv->layout);
}
static void
ALF_Panel_Paint(ALFPanelPriv *priv, HWND hwnd, HDC dc, RECT *r)
{
(void)priv;
ALF_Compat_DrawThemeParentBackground(hwnd, dc, r);
int textlen = GetWindowTextLength(hwnd);
if (textlen < 1)
return;
TCHAR *textbuf = ALF_New(TCHAR, (SIZE_T)textlen + 1);
GetWindowText(hwnd, textbuf, textlen+1);
HFONT oldFont = SelectFont(dc, priv->font);
SetTextColor(dc, GetSysColor(COLOR_BTNTEXT));
SetBkMode(dc, TRANSPARENT);
RECT rc;
GetClientRect(hwnd, &rc);
DrawText(dc, textbuf, -1, &rc, DT_SINGLELINE | DT_EXPANDTABS | DT_HIDEPREFIX | DT_CENTER | DT_VCENTER);
ALF_Free(textbuf);
SelectFont(dc, oldFont);
}
static LRESULT WINAPI
ALF__PanelWindowProc(HWND window, UINT msg, WPARAM wparam, LPARAM lparam)
{
if (msg == WM_NCCREATE) {
ALFPanelPriv *p = ALF_New(ALFPanelPriv, 1);
ALF_Panel_IntializePriv(p);
SetWindowLongPtr(window, 0, (LONG_PTR)p);
}
ALFPanelPriv *priv = (ALFPanelPriv *)GetWindowLongPtr(window, 0);
if (msg == WM_NCDESTROY) {
ALF_Panel_ClearPriv(priv);
ALF_Free(priv);
SetWindowLongPtr(window, 0, 0);
}
if (msg == WM_ERASEBKGND) {
return TRUE;
}
if (msg == WM_SETFONT) {
priv->font = (HFONT)wparam;
if (LOWORD(lparam) != 0)
InvalidateRect(window, NULL, TRUE);
// fallthrough to layout, will propagate font to children
}
if (msg == WM_GETFONT) {
return (LRESULT)priv->font;
}
if (msg == WM_SETTEXT) {
InvalidateRect(window, NULL, TRUE);
}
if (msg == WM_PRINTCLIENT) {
RECT r = { 0, 0, 0, 0 };
GetClientRect(window, &r);
ALF_Panel_Paint(priv, window, (HDC)wparam, &r);
return TRUE;
}
if (msg == WM_PAINT) {
PAINTSTRUCT ps;
HDC dc = BeginPaint(window, &ps);
ALF_Panel_Paint(priv, window, dc, &ps.rcPaint);
EndPaint(window, &ps);
return 0;
}
if (ALF_ShouldMessageBubble(window, msg, wparam, lparam))
return SendMessage(GetParent(window), msg, wparam, lparam);
if (msg == WM_SIZE) {
ALF_Layout_Apply(&priv->layout, window);
}
LRESULT ret = 0;
if (ALF_Layout_HandleMessage(&priv->layout, window, msg, wparam, lparam, &ret))
return ret;
return DefWindowProc(window, msg, wparam, lparam);
}
void
ALF_RegisterPanelClass(void)
{
WNDCLASS cls;
ZeroMemory(&cls, sizeof(cls));
TCHAR classNameBuf[256];
ALF_BuildUniqueName(classNameBuf, TEXT("ALFPanel."), (ULONG_PTR)&_alf_panelClass);
cls.hInstance = ALF_HINSTANCE;
cls.hCursor = LoadCursor(NULL, (LPTSTR)IDC_ARROW);
cls.lpszClassName = classNameBuf;
cls.cbWndExtra = sizeof(void*);
cls.lpfnWndProc = ALF__PanelWindowProc;
ATOM classatom = RegisterClass(&cls);
if (!classatom)
MessageBox(NULL, TEXT("FATAL: Could not register panel class"), NULL, MB_OK);
_alf_panelClass = MAKEINTATOM(classatom);
}
HWND
ALF_CreatePanelWindow(HWND parent, WORD id)
{
return CreateWindowEx(WS_EX_CONTROLPARENT,
_alf_panelClass,
TEXT(""),
WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN,
0, 0, 0, 0,
parent,
(HMENU)(int)id,
ALF_HINSTANCE,
NULL);
}
HWND
ALF_AddPanel(HWND parent, WORD id, int x, int y)
{
HWND hwndPanel = ALF_CreatePanelWindow(parent, id);
ALF_AddWidget(parent, x, y, hwndPanel, 0, 0, ALF_LAYOUT_SIZE_QUERY | ALF_LAYOUT_INHERITFONT);
return hwndPanel;
}
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