Source code of Windows XP (NT5)
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//////////////////////////////////////////////////////////////////////////////
//
// ANIMATE.CPP
//
/*
This class is responsible for the animations in the busy dialogs such as the
merge index dialog.
REVIEW: Could we use the commctrl animation control instead?
*/
// needed for those pesky pre-compiled headers
#include "header.h"
#include <windows.h>
#include "animate.h" // Animate class
#include "resource.h"
#ifdef _DEBUG
#undef THIS_FILE
static const char THIS_FILE[] = __FILE__;
#endif
static const char txtAnimateClassName[] = "Help_Animation";
static const WCHAR wtxtAnimateClassName[] = L"Help_Animation";
typedef struct {
int left;
int top;
int cx;
int cy;
} WRECT;
void STDCALL GetWindowWRect(HWND hwnd, WRECT* prc)
{
ASSERT(IsValidWindow(hwnd));
GetWindowRect(hwnd, (PRECT) prc);
// Convert right and bottom into width and height
prc->cx -= prc->left;
prc->cy -= prc->top;
}
const int CX_DRAWAREA = 40;
const int CY_DRAWAREA = 40;
const int CX_BOOK = 36;
const int CY_BOOK = 36;
const int C_BOOKS = 5;
const int X_BOOK = 0;
const int Y_BOOK = (CY_DRAWAREA - CY_BOOK);
const int CX_PEN = 15;
const int CY_PEN = 20;
const int C_PENS = 3;
const int X_PEN = 18;
const int Y_PEN = 2;
const int CX_STROKE = 1;
const int CY_STROKE = 2;
const int C_HORZ_STROKES = 10;
const int C_VERT_STROKES = 4;
const int C_PEN_STROKES = (C_HORZ_STROKES * C_VERT_STROKES);
const int C_PAUSE_FRAMES = 0;
const int C_FRAMES = (C_PEN_STROKES + C_BOOKS + C_PAUSE_FRAMES);
const int ANIMATE_INCREMENTS = 100;
const COLORREF clrPenA = RGB(128, 128, 128);
const COLORREF clrPenB = RGB(128, 0, 128);
const int MAX_CNT_LINE = 1024;
const int VPAD = 62;
const int HPAD = 30;
static VOID _fastcall PointFromStroke(int xStroke, int yStroke, POINT* lppt);
#define SafeDeleteDC( hDC ) if( hDC ) { DeleteDC( hDC ); hDC = NULL; }
#define SafeDeleteObject( hObj ) if( hObj ) { DeleteObject( hObj ); hObj = NULL; }
LRESULT CALLBACK StatusWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
// remove escape keys
#if 0
MSG msg2;
if( PeekMessage( &msg2, hwnd, 0, 0, PM_NOREMOVE ) ) {
if( msg2.message == WM_KEYDOWN || msg2.message == WM_KEYUP ) {
if( msg2.wParam == VK_ESCAPE ) {
PeekMessage( &msg2, hwnd, 0, 0, PM_REMOVE );
}
}
}
#endif
if(g_bWinNT5)
return DefWindowProcW(hwnd, msg, wParam, lParam);
else
return DefWindowProc(hwnd, msg, wParam, lParam);
}
class Animate
{
public:
Animate();
~Animate(void);
void STDCALL NextFrame(void);
void SetPosition(int x, int y) { m_xPos = x; m_yPos = y; };
BOOL STDCALL CreateStatusWindow(HWND hwndParent, int idTitle);
HWND m_hWndParent;
HWND m_hWnd;
protected:
HBITMAP m_hBmpTemp;
HDC m_hDCBmp;
HBITMAP m_hBmpIml;
int m_iFrame;
int m_xPos;
int m_yPos;
DWORD m_oldTickCount;
DWORD m_originalTickCount;
BOOL m_fShown;
};
static Animate* g_pAnimationWindow = NULL;
BOOL STDCALL StartAnimation(int idTitle, HWND hWnd )
{
ASSERT(!g_pAnimationWindow);
if( g_pAnimationWindow )
return FALSE;
g_pAnimationWindow = new Animate();
if( !hWnd )
if( !(hWnd = GetActiveWindow()) )
hWnd = GetDesktopWindow();
if (!g_pAnimationWindow->CreateStatusWindow( hWnd, idTitle)) {
delete g_pAnimationWindow;
g_pAnimationWindow = NULL;
return FALSE;
}
return TRUE;
}
void STDCALL NextAnimation(void)
{
if (g_pAnimationWindow)
g_pAnimationWindow->NextFrame();
}
void STDCALL StopAnimation(void)
{
if (g_pAnimationWindow)
delete g_pAnimationWindow;
g_pAnimationWindow = NULL;
}
BOOL STDCALL Animate::CreateStatusWindow(HWND hWndParent, int idTitle)
{
int width;
WORD lang = PRIMARYLANGID(_Module.m_Language.GetUiLanguage());
if(g_bWinNT5)
{
WNDCLASSW wc;
SIZE sSize;
ZeroMemory(&wc, sizeof(wc));
// Register Main window class
wc.hInstance = _Module.GetModuleInstance();
wc.style = CS_BYTEALIGNWINDOW | CS_CLASSDC;
wc.lpfnWndProc = StatusWndProc;
wc.lpszClassName = wtxtAnimateClassName;
wc.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
wc.hIcon = LoadIcon(_Module.GetResourceInstance(), "Icon!HTMLHelp");
if (!RegisterClassW(&wc))
return FALSE;
WRECT rc;
m_hWndParent = hWndParent;
GetWindowWRect(m_hWndParent, &rc);
const WCHAR *psz = GetStringResourceW(idTitle);
int len = wcslen(psz);
HDC hdc = GetDC(hWndParent);
GetTextExtentPoint32W(hdc, psz, len, (LPSIZE)&sSize);
ReleaseDC(m_hWndParent, hdc);
width = sSize.cx;
if(lang == LANG_JAPANESE || lang == LANG_CHINESE || lang == LANG_KOREAN)
width+=100;
if (width < CX_BOOK)
width = CX_BOOK;
if ( 0 /*!fIsThisNewShell4*/ )
width += HPAD;
#ifdef BIDI
m_hWnd = CreateWindowExW(WS_EX_WINDOWEDGE | /* WS_EX_TOPMOST | */
(fForceLtr ? 0 : WS_EX_RIGHT | WS_EX_RTLREADING | WS_EX_LEFTSCROLLBAR),
wtxtAnimateClassName, psz, WS_POPUP | WS_BORDER | WS_CAPTION,
rc.left + rc.cx / 2 - width / 2,
rc.top + rc.cy / 2 - CY_BOOK / 2 + HPAD,
width + GetSystemMetrics(SM_CXBORDER) * 2 + 2,
CY_BOOK + GetSystemMetrics(SM_CYBORDER) * 2 + VPAD +
GetSystemMetrics(SM_CYCAPTION),
(IsWindowVisible(m_hWndParent)) ? m_hWndParent : NULL,
NULL, hInsNow, NULL);
#else
m_hWnd = CreateWindowExW(WS_EX_WINDOWEDGE /* | WS_EX_TOPMOST*/,
wtxtAnimateClassName, psz, WS_POPUP | WS_BORDER | WS_CAPTION,
rc.left + rc.cx / 2 - width / 2,
rc.top + rc.cy / 2 - CY_BOOK / 2 + HPAD,
width + GetSystemMetrics(SM_CXBORDER) * 2 + 2,
CY_BOOK + GetSystemMetrics(SM_CYBORDER) * 2 + VPAD +
GetSystemMetrics(SM_CYCAPTION),
(IsWindowVisible(m_hWndParent)) ? m_hWndParent : NULL,
NULL, _Module.GetModuleInstance(), NULL);
#endif
}
else
{
WNDCLASS wc;
SIZE sSize;
ZeroMemory(&wc, sizeof(wc));
// Register Main window class
wc.hInstance = _Module.GetModuleInstance();
wc.style = CS_BYTEALIGNWINDOW | CS_CLASSDC;
wc.lpfnWndProc = StatusWndProc;
wc.lpszClassName = (LPCSTR) txtAnimateClassName;
wc.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
wc.hIcon = LoadIcon(_Module.GetResourceInstance(), "Icon!HTMLHelp");
if (!RegisterClass(&wc))
return FALSE;
WRECT rc;
m_hWndParent = hWndParent;
GetWindowWRect(m_hWndParent, &rc);
HDC hdc = GetDC(m_hWndParent);
PSTR psz = (PSTR) GetStringResource(idTitle);
GetTextExtentPoint32(hdc, psz, (int)strlen(psz), (LPSIZE)&sSize);
width = sSize.cx;
if(lang == LANG_JAPANESE || lang == LANG_CHINESE || lang == LANG_KOREAN)
width+=100;
if (width < CX_BOOK)
width = CX_BOOK;
if ( 0 /*!fIsThisNewShell4*/ )
width += HPAD;
ReleaseDC(m_hWndParent, hdc);
#ifdef BIDI
m_hWnd = CreateWindowEx(WS_EX_WINDOWEDGE | /* WS_EX_TOPMOST | */
(fForceLtr ? 0 : WS_EX_RIGHT | WS_EX_RTLREADING | WS_EX_LEFTSCROLLBAR),
(LPCSTR) txtAnimateClassName, psz, WS_POPUP | WS_BORDER | WS_CAPTION,
rc.left + rc.cx / 2 - width / 2,
rc.top + rc.cy / 2 - CY_BOOK / 2 + HPAD,
width + GetSystemMetrics(SM_CXBORDER) * 2 + 2,
CY_BOOK + GetSystemMetrics(SM_CYBORDER) * 2 + VPAD +
GetSystemMetrics(SM_CYCAPTION),
(IsWindowVisible(m_hWndParent)) ? m_hWndParent : NULL,
NULL, hInsNow, NULL);
#else
m_hWnd = CreateWindowEx(WS_EX_WINDOWEDGE /* | WS_EX_TOPMOST*/,
(LPCSTR) txtAnimateClassName, psz, WS_POPUP | WS_BORDER | WS_CAPTION,
rc.left + rc.cx / 2 - width / 2,
rc.top + rc.cy / 2 - CY_BOOK / 2 + HPAD,
width + GetSystemMetrics(SM_CXBORDER) * 2 + 2,
CY_BOOK + GetSystemMetrics(SM_CYBORDER) * 2 + VPAD +
GetSystemMetrics(SM_CYCAPTION),
(IsWindowVisible(m_hWndParent)) ? m_hWndParent : NULL,
NULL, _Module.GetModuleInstance(), NULL);
#endif
}
ASSERT(m_hWnd);
SetPosition((width - CX_BOOK) / 2, VPAD / 4);
EnableWindow( m_hWndParent, FALSE );
if (!m_hWnd) {
UnregisterClass((LPCSTR)txtAnimateClassName, _Module.GetModuleInstance());
return FALSE;
}
m_fShown = FALSE;
return TRUE;
}
///////////////////////////// ANIMATE CLASS ///////////////////////////////
Animate::Animate()
{
m_hDCBmp = NULL;
m_hWnd = NULL;
m_originalTickCount = GetTickCount();
m_hWndParent = NULL;
m_hBmpTemp = NULL;
m_hBmpIml = NULL;
}
Animate::~Animate(void)
{
SafeDeleteDC( m_hDCBmp )
SafeDeleteObject( m_hBmpTemp );
SafeDeleteObject( m_hBmpIml );
EnableWindow( m_hWndParent, TRUE );
if (m_hWnd) {
DestroyWindow(m_hWnd);
m_hWnd = NULL;
UnregisterClass((LPCSTR) txtAnimateClassName, _Module.GetModuleInstance());
}
}
/***************************************************************************
FUNCTION: AnimFrame
PURPOSE: Displays one frame of the "build index" animation
in the specified device context.
PARAMETERS:
hdc
x
y
RETURNS:
COMMENTS:
MODIFICATION DATES:
04-Nov-1993 [niklasb]
***************************************************************************/
void PASCAL Animate::NextFrame(void)
{
DWORD curTickCount = GetTickCount();
if (curTickCount - m_oldTickCount < ANIMATE_INCREMENTS)
return;
m_oldTickCount = curTickCount;
// Delay showing the window for one second. If we get done before then,
// then there's no need to have gone to all the trouble.
if (!m_fShown) {
if (curTickCount - m_originalTickCount < 1000)
return;
HBITMAP hbmBooks = LoadBitmap(_Module.GetResourceInstance(), MAKEINTRESOURCE(IDBMP_BOOK));
HBITMAP hbmPens = LoadBitmap(_Module.GetResourceInstance(), MAKEINTRESOURCE(IDBMP_PENS));
HDC hdcTemp = CreateCompatibleDC(NULL);
m_hDCBmp = CreateCompatibleDC(NULL);
HBITMAP hbmpOldBook = NULL;
m_hBmpTemp = NULL;
if (m_hDCBmp) {
hbmpOldBook = (HBITMAP)SelectObject(m_hDCBmp, hbmBooks);
m_hBmpTemp = CreateCompatibleBitmap(m_hDCBmp, CX_DRAWAREA, CY_DRAWAREA);
}
if (!hbmBooks || !hbmPens || !m_hBmpTemp || !m_hDCBmp || !hdcTemp) {
if (hbmpOldBook)
SelectObject(m_hDCBmp, hbmpOldBook);
SafeDeleteObject( hbmpOldBook );
SafeDeleteObject( hbmBooks );
SafeDeleteObject( hbmPens );
SafeDeleteDC( hdcTemp );
return;
}
m_hBmpIml = CreateCompatibleBitmap(m_hDCBmp, CX_DRAWAREA * C_FRAMES, CY_DRAWAREA);
HBITMAP hbmpOldTemp = (HBITMAP) SelectObject(hdcTemp, m_hBmpTemp);
HBITMAP hbmpOldBmp = (HBITMAP) SelectObject(m_hDCBmp, hbmBooks);
// Create the frames in which the pen scribbles on the open book.
m_iFrame = 0;
for (int y = 0; y < C_VERT_STROKES; y++) {
for (int x = 0; x < C_HORZ_STROKES; x++) {
// Show the book on a white background.
PatBlt(hdcTemp, 0, 0, CX_DRAWAREA, CY_DRAWAREA, WHITENESS);
SelectObject(m_hDCBmp, hbmBooks);
BitBlt(hdcTemp, X_BOOK, Y_BOOK, CX_BOOK, CY_BOOK, m_hDCBmp,
(C_BOOKS - 1) * CX_BOOK, 0, SRCCOPY);
// Add in the scribbled "text".
POINT pt;
for (int yDraw = 0; yDraw < y; yDraw++) {
for (int xDraw = 0; xDraw < C_HORZ_STROKES; xDraw++) {
PointFromStroke(xDraw, yDraw, &pt);
SetPixel(hdcTemp, pt.x, pt.y + CY_PEN - 1,
(xDraw & 1) ? clrPenA : clrPenB);
}
}
for (int xDraw = 0; xDraw <= x; xDraw++) {
PointFromStroke(xDraw, y, &pt);
SetPixel(hdcTemp, pt.x, pt.y + CY_PEN - 1,
(xDraw & 1) ? clrPenA : clrPenB);
}
// Add in the pen using the SRCAND operation.
SelectObject(m_hDCBmp, hbmPens);
BitBlt(hdcTemp, pt.x, pt.y, CX_PEN, CY_PEN, m_hDCBmp,
(m_iFrame & 1) ? CX_PEN : (m_iFrame & 2) * CX_PEN, 0, SRCAND);
SelectObject(m_hDCBmp, m_hBmpIml);
BitBlt(m_hDCBmp, m_iFrame * CX_DRAWAREA, 0, CX_DRAWAREA, CY_DRAWAREA,
hdcTemp, 0, 0, SRCCOPY);
m_iFrame++;
}
}
// Blast a white background into the temporary bitmap, and
// select the books bitmap.
PatBlt(hdcTemp, 0, 0, CX_DRAWAREA, CY_DRAWAREA, WHITENESS);
// Add the frames for the page turning (from the books bitmap).
for (int iBook = 0; iBook < C_BOOKS; iBook++) {
SelectObject(m_hDCBmp, hbmBooks);
BitBlt(hdcTemp, X_BOOK, Y_BOOK, CX_BOOK, CY_BOOK,
m_hDCBmp, iBook * CX_BOOK, 0, SRCCOPY);
SelectObject(m_hDCBmp, m_hBmpIml);
BitBlt(m_hDCBmp, m_iFrame * CX_DRAWAREA, 0, CX_DRAWAREA, CY_DRAWAREA,
hdcTemp, 0, 0, SRCCOPY);
m_iFrame++;
}
SelectObject(hdcTemp, hbmpOldTemp);
m_iFrame = 0;
if (hbmpOldBook)
SelectObject(m_hDCBmp, hbmpOldBook);
SafeDeleteObject(hbmpOldBook);
SafeDeleteObject(hbmBooks);
SafeDeleteObject(hbmPens);
SafeDeleteDC( hdcTemp );
m_fShown = TRUE;
ShowWindow(m_hWnd, SW_NORMAL);
}
ASSERT(IsValidWindow(m_hWnd));
HDC hdc = GetDC(m_hWnd);
HBITMAP hbmpOld = (HBITMAP) SelectObject(m_hDCBmp, m_hBmpIml);
BitBlt(hdc, m_xPos, m_yPos, CX_DRAWAREA, CY_DRAWAREA, m_hDCBmp,
m_iFrame * CX_DRAWAREA, 0, SRCCOPY);
SelectObject(m_hDCBmp, hbmpOld);
ReleaseDC(m_hWnd, hdc);
// Next time draw the next frame.
if (++m_iFrame > C_FRAMES) {
m_iFrame = 0;
}
}
static VOID FASTCALL PointFromStroke(int xStroke, int yStroke, POINT* lppt)
{
int cx = (C_HORZ_STROKES / 2) - xStroke;
lppt->x = X_PEN + xStroke * CX_STROKE;
lppt->y = Y_PEN + yStroke * CY_STROKE + cx * cx / 10;
}