流媒体/Mpeg4/MP4

开发平台：
Visual C++

Resizer.cpp：源码内容
							/**************************************************************************************
 *                                                                                    *
 * This application contains code from OpenDivX and is released as a "Larger Work"    *
 * under that license. Consistant with that license, this application is released     *
 * under the GNU General Public License.                                              *
 *                                                                                    *
 * The OpenDivX license can be found at: http://www.projectmayo.com/opendivx/docs.php *
 * The GPL can be found at: http://www.gnu.org/copyleft/gpl.html                      *
 *                                                                                    *
 * Copyright (c) 2001 - Project Mayo                                                  *
 *                                                                                    *
 * Authors: Damien Chavarria <adrc at projectmayo.com>                                *
 *                                                                                    *
 **************************************************************************************/
#include "Resizer.h"
/*
 * The class used to draw
 * the resize frame...
 *
 */
Resizer::Resizer() {
	this->lastPt.x = -1;
	this->lastPt.y = -1;
}
Resizer::~Resizer() {
}
void Resizer::Start(POINT *pt) {
	this->lastPt.x = -1;
	this->lastPt.y = -1;
}
void Resizer::Draw(HWND hwnd, POINT *pt1) {
	POINT p, pt;
	RECT  rect;
	HPEN  pen, oldPen;
	HDC   dc;
	int   oldMode;
	pt.x = pt1->x;
	pt.y = pt1->y;
	GetClientRect(hwnd, &rect);
	
	p.x = rect.left;
	p.y = rect.top;
	ClientToScreen(hwnd, &p);
	dc = GetDC(NULL);
	pen    = CreatePen(PS_SOLID, 2, 0);
	oldPen = (HPEN) SelectObject(dc, pen);
	oldMode = SetROP2(dc, R2_NOT);
	/*
	 * Draw back if needed
	 */
	if(this->lastPt.x != 1 && this->lastPt.y != -1) {
		MoveToEx(dc, p.x + 2, p.y + 2, NULL);
		
		LineTo(dc, this->lastPt.x, p.y + 2);
		LineTo(dc, this->lastPt.x, this->lastPt.y);
		LineTo(dc, p.x + 2, this->lastPt.y);
		LineTo(dc, p.x + 2, p.y + 2);
	}
	if(pt1->x > 32768 || pt1->y > 32768) {
		MoveToEx(dc, p.x + 2, p.y + 2, NULL);
	
		LineTo(dc, p.x + DEFAULT_SKIN_WIDTH, p.y + 2);
		LineTo(dc, p.x + DEFAULT_SKIN_WIDTH, p.y + DEFAULT_SKIN_HEIGHT);
		LineTo(dc, p.x + 2, p.y + DEFAULT_SKIN_HEIGHT);
		LineTo(dc, p.x + 2, p.y + 2);
	
		this->lastPt.x = p.x + DEFAULT_SKIN_WIDTH;
		this->lastPt.y = p.y + DEFAULT_SKIN_HEIGHT;
		goto end;
	}
	ClientToScreen(hwnd, &pt);
	/*
	 * Now check where we are
	 */
	if((pt.x - p.x) >= DEFAULT_SKIN_WIDTH && (pt.y - p.y) >= DEFAULT_SKIN_HEIGHT) {
		MoveToEx(dc, p.x + 2, p.y + 2, NULL);
		
		LineTo(dc, pt.x + 5, p.y + 2);
		LineTo(dc, pt.x + 5, pt.y + 5);
		LineTo(dc, p.x + 2,  pt.y + 5);
		LineTo(dc, p.x + 2, p.y + 2);
	
		this->lastPt.x = pt.x + 5;
		this->lastPt.y = pt.y + 5;
	}
	else {
		if((pt.x - p.x) >= DEFAULT_SKIN_WIDTH) {
			MoveToEx(dc, p.x + 2, p.y + 2, NULL);
		
			LineTo(dc, pt.x + 5, p.y + 2);
			LineTo(dc, pt.x + 5, p.y + DEFAULT_SKIN_HEIGHT);
			LineTo(dc, p.x + 2,  p.y + DEFAULT_SKIN_HEIGHT);
			LineTo(dc, p.x + 2, p.y + 2);
	
			this->lastPt.x = pt.x + 5;
			this->lastPt.y = p.y + DEFAULT_SKIN_HEIGHT;
		}
		else {
			if((pt.y - p.y) >= DEFAULT_SKIN_HEIGHT) {
			
				MoveToEx(dc, p.x + 2, p.y + 2, NULL);
		
				LineTo(dc, p.x + DEFAULT_SKIN_WIDTH, p.y + 2);
				LineTo(dc, p.x + DEFAULT_SKIN_WIDTH, pt.y + 5);
				LineTo(dc, p.x + 2, pt.y + 5);
				LineTo(dc, p.x + 2, p.y + 2);
	
				this->lastPt.x = p.x + DEFAULT_SKIN_WIDTH;
				this->lastPt.y = pt.y + 5;
			}
			else {
				MoveToEx(dc, p.x + 2, p.y + 2, NULL);
		
				LineTo(dc, p.x + DEFAULT_SKIN_WIDTH, p.y + 2);
				LineTo(dc, p.x + DEFAULT_SKIN_WIDTH, p.y + DEFAULT_SKIN_HEIGHT);
				LineTo(dc, p.x + 2, p.y + DEFAULT_SKIN_HEIGHT);
				LineTo(dc, p.x + 2, p.y + 2);
	
				this->lastPt.x = p.x + DEFAULT_SKIN_WIDTH;
				this->lastPt.y = p.y + DEFAULT_SKIN_HEIGHT;
			}
		}
	}
end:
	/*
	 * And puts everything back
	 */
	SetROP2(dc, oldMode);
	SelectObject(dc, oldPen);
			
	DeleteObject(pen);
	ReleaseDC(NULL, dc);
}
void Resizer::Stop() {
}

						