mirror of
https://github.com/reactos/reactos.git
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110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
/*
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* Copyright 2008 Marc Piulachs (marc.piulachs@codexchange.net)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <windows.h>
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#include <scrnsave.h>
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#include <tchar.h>
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#include "resource.h"
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#define RANDOM_COLOR (rand () % 256)
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#define APPNAME _T("Circles")
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#define APP_TIMER 1
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#define APP_TIMER_INTERVAL 100
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#define MAX_CIRCLES 50
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int circlesCount;
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int width, x, y;
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LRESULT WINAPI ScreenSaverProc (HWND hwnd, UINT iMsg, WPARAM wparam, LPARAM lparam)
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{
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HDC hdc;
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RECT rect;
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HBRUSH hbrush, hbrushOld;
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switch (iMsg)
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{
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case WM_CREATE:
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SetTimer (hwnd, APP_TIMER, APP_TIMER_INTERVAL, NULL);
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break;
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case WM_DESTROY:
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KillTimer (hwnd, APP_TIMER);
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PostQuitMessage (0);
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return 0;
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case WM_TIMER:
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hdc = GetDC (hwnd);
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GetClientRect (hwnd, &rect);
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hbrush = CreateSolidBrush (RGB (RANDOM_COLOR, RANDOM_COLOR, RANDOM_COLOR));
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hbrushOld = SelectObject (hdc, hbrush);
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x = rand () % rect.right;
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y = rand () % rect.bottom;
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/* the circle will be 10% of total screen */
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width = rect.right / 10;
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if (rect.bottom / 10 < width)
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width = rect.bottom / 10;
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/* Draw circle on screen */
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Ellipse (
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hdc,
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x,
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y,
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x + width,
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y + width);
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//Track the number of painted circles on scren
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circlesCount++;
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if (circlesCount == MAX_CIRCLES)
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{
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InvalidateRect (hwnd, NULL, TRUE);
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circlesCount = 0;
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}
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SelectObject (hdc, hbrushOld);
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DeleteObject (hbrush);
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ReleaseDC (hwnd, hdc);
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return 0;
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}
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return DefScreenSaverProc (hwnd, iMsg, wparam, lparam);
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}
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BOOL WINAPI ScreenSaverConfigureDialog(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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return FALSE;
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}
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// This function is only called one time before opening the configuration dialog.
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// Use it to show a message that no configuration is necesssary and return FALSE to indicate that no configuration dialog shall be opened.
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BOOL WINAPI RegisterDialogClasses(HANDLE hInst)
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{
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TCHAR szMessage[256];
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TCHAR szTitle[25];
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LoadString(hInst, IDS_TEXT, szMessage, sizeof(szMessage) / sizeof(TCHAR));
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LoadString(hInst, IDS_DESCRIPTION, szTitle, sizeof(szTitle) / sizeof(TCHAR));
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MessageBox(NULL, szMessage, szTitle, MB_OK | MB_ICONEXCLAMATION);
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return FALSE;
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}
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