winamp/Src/Plugins/Library/ml_disc/helpwnd.cpp

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2024-09-24 12:54:57 +00:00
#include "main.h"
#include "./resource.h"
#include "../nu/trace.h"
#include <strsafe.h>
#define MLHELP_PROP TEXT("MLHELP")
typedef struct __SIMPLEHELP
{
LPCWSTR pszTitle;
LPCWSTR pszCaption;
LPCWSTR pszText;
HWND hOwner;
UINT uFlags;
} SIMPLEHELP;
typedef struct __MLHELP
{
HWND hOwner;
UINT uFlags;
LONG width;
LONG height;
} MLHELP;
#define GetHelp(__hwnd) ((MLHELP*)GetProp((__hwnd), MLHELP_PROP))
#define CLIENT_MIN_WIDTH 280
#define CLIENT_MIN_HEIGHT 200
#define CLIENT_MAX_WIDTH 800
#define CLIENT_MAX_HEIGHT 600
#define BORDER_SPACE 10
static INT_PTR CALLBACK SimpleHelp_DialogProc(HWND hdlg, UINT uMsg, WPARAM wParam, LPARAM lParam);
HWND MLDisc_ShowHelp(HWND hOwner, LPCWSTR pszWindowTitle, LPCWSTR pszCaption, LPCWSTR pszText, UINT uFlags)
{
SIMPLEHELP help;
help.pszTitle = pszWindowTitle;
help.pszCaption = pszCaption;
help.pszText = pszText;
help.uFlags = uFlags;
help.hOwner = hOwner;
if (HF_DOMODAL & uFlags)
{
WASABI_API_DIALOGBOXPARAMW(IDD_SIMPLEHELP, hOwner, SimpleHelp_DialogProc, (LPARAM)&help);
return NULL;
}
return WASABI_API_CREATEDIALOGPARAMW(IDD_SIMPLEHELP, hOwner, SimpleHelp_DialogProc, (LPARAM)&help);
}
static BOOL FindPrefferedSizeEx(HDC hdc, LPCTSTR pszText, LPCTSTR pszNewLine, SIZE *pSize)
{
if (!pSize) return FALSE;
pSize->cx = 0; pSize->cy = 0;
if (!hdc || !pszText || !pszNewLine) return FALSE;
LPCTSTR pszBlock = pszText;
LPCTSTR pszCursor = pszBlock;
INT cchSep = lstrlenW(pszNewLine);
INT matched = 0;
for(;;)
{
if (*pszCursor)
{
if (*pszCursor == pszNewLine[matched]) matched++;
else matched = 0;
pszCursor++;
}
if (matched == cchSep || TEXT('\0') == *pszCursor)
{
SIZE sz;
INT l = (INT)(size_t)((pszCursor - pszBlock) - matched);
if (l > 0)
{
if (!GetTextExtentPoint32(hdc, pszBlock, l, &sz)) return FALSE;
}
else
{
if (!GetTextExtentPoint32(hdc, TEXT("\n"), 1, &sz)) return FALSE;
sz.cx = 0;
}
if (pSize->cx < sz.cx) pSize->cx= sz.cx;
pSize->cy += sz.cy;
if (TEXT('\0') == *pszCursor) break;
else
{
matched = 0;
pszBlock = pszCursor;
}
}
}
return TRUE;
}
static BOOL FindPrefferedSize(HWND hwnd, LPCTSTR pszText, LPCTSTR pszNewLine, SIZE *pSize)
{
HDC hdc = GetDCEx(hwnd, NULL, DCX_CACHE | DCX_PARENTCLIP);
if (!hdc) return FALSE;
HFONT hf, hfo;
hf = (HFONT)SendMessageW(hwnd, WM_GETFONT, 0, 0L);
if (NULL == hf) hf = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
hfo = (NULL != hf) ? (HFONT)SelectObject(hdc, hf) : NULL;
BOOL br = FindPrefferedSizeEx(hdc, pszText, pszNewLine, pSize);
if (hfo) SelectObject(hdc, hfo);
ReleaseDC(hwnd, hdc);
return br;
}
static INT_PTR SimpleHlp_OnInitDialog(HWND hdlg, HWND hFocus, LPARAM lParam)
{
SIMPLEHELP *pHelp = (SIMPLEHELP*)lParam;
SIZE sizeCaption = { 0, 0 };
SIZE sizeText = { 0, 0 };
SIZE sizeClient = {0, 0};
SIZE sizeButton = {0, 0};
MLHELP *pmlh = (MLHELP*)calloc(1, sizeof(MLHELP));
if (pmlh)
{
pmlh->hOwner = pHelp->hOwner;
pmlh->uFlags = pHelp->uFlags;
pmlh->height = 0;
pmlh->width = 0;
}
SetProp(hdlg, MLHELP_PROP, (HANDLE)pmlh);
HWND hctrl;
if(pHelp)
{
WCHAR szBuffer[4096] = {0};
if (pHelp->pszTitle)
{
if (IS_INTRESOURCE(pHelp->pszCaption))
{
WASABI_API_LNGSTRINGW_BUF((INT)(INT_PTR)pHelp->pszTitle, szBuffer, ARRAYSIZE(szBuffer));
pHelp->pszTitle = szBuffer;
}
SetWindowText(hdlg, pHelp->pszTitle);
}
if (pHelp->pszCaption)
{
if (IS_INTRESOURCE(pHelp->pszCaption))
{
WASABI_API_LNGSTRINGW_BUF((INT)(INT_PTR)pHelp->pszCaption, szBuffer, ARRAYSIZE(szBuffer));
pHelp->pszCaption = szBuffer;
}
if (NULL != (hctrl = GetDlgItem(hdlg, IDC_LBL_CAPTION)))
{
FindPrefferedSize(hctrl, pHelp->pszCaption, TEXT("\n"), &sizeCaption);
SetWindowText(hctrl, pHelp->pszCaption);
}
}
if (pHelp->pszText)
{
if (IS_INTRESOURCE(pHelp->pszText))
{
WCHAR form_szBuffer[4096] = {0}, *fszB = form_szBuffer, *szB = szBuffer;
WASABI_API_LNGSTRINGW_BUF((INT)(INT_PTR)pHelp->pszText, form_szBuffer, ARRAYSIZE(form_szBuffer));
while(fszB && *fszB){
if(*fszB == L'\n' && *CharPrevW(form_szBuffer,fszB) != L'\r'){
*szB = L'\r';
szB = CharNextW(szB);
}
*szB = *fszB;
szB = CharNextW(szB);
fszB = CharNextW(fszB);
}
*szB = 0;
pHelp->pszText = szBuffer;
}
if (NULL != (hctrl = GetDlgItem(hdlg, IDC_EDT_TEXT)))
{
FindPrefferedSize(hctrl, pHelp->pszText, TEXT("\r\n"), &sizeText);
SetWindowText(hctrl, pHelp->pszText);
}
}
if (0 == (HF_ALLOWRESIZE & pHelp->uFlags))
{
SetWindowLongPtrW(hdlg, GWL_EXSTYLE, GetWindowLongPtrW(hdlg, GWL_EXSTYLE) | WS_EX_DLGMODALFRAME);
SetWindowLongPtrW(hdlg, GWL_STYLE, (GetWindowLongPtrW(hdlg, GWL_STYLE) & ~WS_THICKFRAME) | DS_MODALFRAME);
}
}
if (sizeText.cx > 0) sizeText.cx += GetSystemMetrics(SM_CXVSCROLL);
sizeClient.cx = ((sizeText.cx > sizeCaption.cx) ? sizeText.cx : sizeCaption.cx) + 8;
if (sizeClient.cx < CLIENT_MIN_WIDTH) sizeClient.cx = CLIENT_MIN_WIDTH;
if (sizeClient.cx > CLIENT_MAX_WIDTH) sizeClient.cx = CLIENT_MAX_WIDTH;
sizeText.cx = sizeClient.cx;
sizeCaption.cx = sizeClient.cx;
sizeClient.cx += BORDER_SPACE * 2;
if (sizeCaption.cy > 0) sizeCaption.cy += 16;
if (sizeCaption.cy > CLIENT_MAX_HEIGHT/3) sizeCaption.cy = CLIENT_MAX_HEIGHT/3;
if (sizeText.cy > 0) sizeText.cy += 16;
if (sizeText.cy < (CLIENT_MIN_HEIGHT - sizeCaption.cy)) sizeText.cy = (CLIENT_MIN_HEIGHT - sizeCaption.cy);
if (sizeText.cy > (CLIENT_MAX_HEIGHT - sizeCaption.cy)) sizeText.cy = (CLIENT_MAX_HEIGHT - sizeCaption.cy);
if (NULL != (hctrl = GetDlgItem(hdlg, IDCANCEL)))
{
RECT rw;
if (GetWindowRect(hctrl, &rw)) { sizeButton.cx = rw.right - rw.left; sizeButton.cy = rw.bottom - rw.top; }
}
LONG top = BORDER_SPACE;
sizeClient.cy = BORDER_SPACE +sizeCaption.cy + sizeText.cy + 8 + sizeButton.cy + BORDER_SPACE;
if (NULL != (hctrl = GetDlgItem(hdlg, IDC_LBL_CAPTION)))
{
if (0 == sizeCaption.cy) EnableWindow(hctrl, FALSE);
SetWindowPos(hctrl, NULL, BORDER_SPACE, top, sizeCaption.cx, sizeCaption.cy, SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOOWNERZORDER);
top += sizeCaption.cy;
}
if (NULL != (hctrl = GetDlgItem(hdlg, IDC_EDT_TEXT)))
{
if (0 == sizeText.cy) EnableWindow(hctrl, FALSE);
SetWindowPos(hctrl, NULL, BORDER_SPACE, top, sizeText.cx, sizeText.cy, SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOOWNERZORDER);
}
if (NULL != (hctrl = GetDlgItem(hdlg, IDCANCEL)))
{
SetWindowPos(hctrl, NULL, sizeClient.cx - BORDER_SPACE - sizeButton.cx, sizeClient.cy - BORDER_SPACE - sizeButton.cy,
sizeButton.cx, sizeButton.cy, SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOOWNERZORDER);
}
RECT rw, rc;
if (GetClientRect(hdlg, &rc) && GetWindowRect(hdlg, &rw))
{
sizeClient.cx += ((rw.right - rw.left) - (rc.right - rc.left));
sizeClient.cy += ((rw.bottom - rw.top) - (rc.bottom - rc.top));
}
SetRect(&rw, 0, 0, 0, 0);
if (pHelp->hOwner && GetWindowRect(pHelp->hOwner, &rw))
{
rw.left += ((rw.right - rw.left) - sizeClient.cx)/2;
rw.top += ((rw.bottom - rw.top) - sizeClient.cy)/2;
}
UINT swpFlags = SWP_NOACTIVATE | SWP_NOOWNERZORDER | ((HF_DOMODAL & pHelp->uFlags) ? SWP_NOZORDER : 0);
pmlh->width = sizeClient.cx;
pmlh->height = sizeClient.cy;
SetWindowPos(hdlg, HWND_TOP, rw.left, rw.top, sizeClient.cx, sizeClient.cy, swpFlags);
return FALSE;
}
static void SimpleHelp_OnDestroy(HWND hdlg)
{
MLHELP *pHelp = GetHelp(hdlg);
RemoveProp(hdlg, MLHELP_PROP);
if (pHelp && 0 == (HF_DOMODAL & pHelp->uFlags) && pHelp->hOwner && IsWindow(pHelp->hOwner))
SendMessageW(pHelp->hOwner, WM_PARENTNOTIFY, MAKEWPARAM(WM_DESTROY, 0), (LPARAM)hdlg);
if (pHelp) free(pHelp);
}
static void SimpleHlp_OnCommand(HWND hdlg, INT ctrlId, INT eventId, HWND hctrl)
{
MLHELP *pHelp = GetHelp(hdlg);
switch(ctrlId)
{
case IDCANCEL:
case IDOK:
if (!pHelp || (HF_DOMODAL & pHelp->uFlags)) EndDialog(hdlg, ctrlId);
else DestroyWindow(hdlg);
break;
}
}
/*static void SimpleHlp_OnWindowPosChanging(HWND hdlg, WINDOWPOS *pwp)
{
MLHELP *pHelp = GetHelp(hdlg);
if (!pHelp) return;
if (0 == (SWP_NOSIZE & pwp->flags))
{
if (pwp->cx < CLIENT_MIN_WIDTH) pwp->cx = CLIENT_MIN_WIDTH;
if (pwp->cx > CLIENT_MAX_WIDTH) pwp->cx = CLIENT_MAX_WIDTH;
if (pwp->cy < CLIENT_MIN_HEIGHT) pwp->cy = CLIENT_MIN_HEIGHT;
if (pwp->cy > CLIENT_MAX_HEIGHT) pwp->cy = CLIENT_MAX_HEIGHT;
}
}
static void SimpleHlp_OnWindowPosChanged(HWND hdlg, WINDOWPOS *pwp)
{
MLHELP *pHelp = GetHelp(hdlg);
if (!pHelp) return;
if (0 == (SWP_NOSIZE & pwp->flags))
{
RECT rw;
GetWindowRect(hdlg, &rw);
LONG dx = (rw.right - rw.left) - pHelp->width;
LONG dy = (rw.bottom - rw.top) - pHelp->height;
pHelp->width = rw.right - rw.left;
pHelp->height = rw.bottom - rw.top;
HDWP hdwp = BeginDeferWindowPos(3);
HWND hctrl;
if (hdwp && 0 != dx && NULL != (hctrl = GetDlgItem(hdlg, IDC_LBL_CAPTION)) && GetWindowRect(hctrl, &rw))
{
hdwp = DeferWindowPos(hdwp, hctrl, NULL, 0, 0,
(rw.right - rw.left) + dx, (rw.bottom - rw.top), SWP_NOMOVE | SWP_NOZORDER | SWP_NOOWNERZORDER | SWP_NOACTIVATE | SWP_NOCOPYBITS | SWP_NOREDRAW);
InvalidateRect(hctrl, NULL, TRUE);
}
if (hdwp && (0 != dx || 0 != dy) &&
NULL != (hctrl = GetDlgItem(hdlg, IDC_EDT_TEXT)) && GetWindowRect(hctrl, &rw))
{
hdwp = DeferWindowPos(hdwp, hctrl, NULL, 0, 0,
(rw.right - rw.left) + dx, (rw.bottom - rw.top) + dy, SWP_NOMOVE | SWP_NOZORDER | SWP_NOOWNERZORDER | SWP_NOACTIVATE | SWP_NOCOPYBITS | SWP_NOREDRAW);
}
if (hdwp && (0 != dx || 0 != dy) &&
NULL != (hctrl = GetDlgItem(hdlg, IDCANCEL)) && GetWindowRect(hctrl, &rw))
{
MapWindowPoints(HWND_DESKTOP, hdlg, (POINT*)&rw, 2);
hdwp = DeferWindowPos(hdwp, hctrl, NULL, rw.left + dx, rw.top + dy, 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER | SWP_NOACTIVATE | SWP_NOCOPYBITS | SWP_NOREDRAW);
}
if (hdwp && EndDeferWindowPos(hdwp))
{
RedrawWindow(hdlg, NULL, NULL, RDW_INVALIDATE | RDW_ERASE | RDW_INTERNALPAINT | RDW_ALLCHILDREN | RDW_UPDATENOW | RDW_ERASENOW);
}
}
}*/
static INT_PTR CALLBACK SimpleHelp_DialogProc(HWND hdlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch(uMsg)
{
case WM_INITDIALOG: return SimpleHlp_OnInitDialog(hdlg, (HWND)wParam, lParam);
case WM_DESTROY: SimpleHelp_OnDestroy(hdlg); break;
case WM_COMMAND: SimpleHlp_OnCommand(hdlg, LOWORD(wParam), HIWORD(wParam), (HWND)lParam); break;
/*case WM_WINDOWPOSCHANGING: SimpleHlp_OnWindowPosChanging(hdlg, (WINDOWPOS*)lParam); return 0;
case WM_WINDOWPOSCHANGED: SimpleHlp_OnWindowPosChanged(hdlg, (WINDOWPOS*)lParam); return 0;*/
}
return 0;
}