251 lines
14 KiB
C++
251 lines
14 KiB
C++
/*
|
|
** Command & Conquer Red Alert(tm)
|
|
** Copyright 2025 Electronic Arts Inc.
|
|
**
|
|
** This program is free software: you can redistribute it and/or modify
|
|
** it under the terms of the GNU General Public License as published by
|
|
** the Free Software Foundation, either version 3 of the License, or
|
|
** (at your option) any later version.
|
|
**
|
|
** This program is distributed in the hope that it will be useful,
|
|
** but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
** GNU General Public License for more details.
|
|
**
|
|
** You should have received a copy of the GNU General Public License
|
|
** along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/***************************************************************************
|
|
** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S **
|
|
***************************************************************************
|
|
* *
|
|
* Project Name : Westwood 32 bit Library *
|
|
* *
|
|
* File Name : VBUFFER.CPP *
|
|
* *
|
|
* Programmer : Phil W. Gorrow *
|
|
* *
|
|
* Start Date : January 9, 1995 *
|
|
* *
|
|
* Last Update : January 9, 1995 [PWG] *
|
|
* *
|
|
* This module contains the C++ class definitions for the video buffer *
|
|
* class. This include routines for class creation and modification *
|
|
*-------------------------------------------------------------------------*
|
|
* Functions: *
|
|
* VVPC::VideoViewPortClass -- Constructor for basic view port class *
|
|
* VVPC::VideoViewPortClass -- Default constructor for view port class *
|
|
* VVPC::~VideoViewPortClass -- Destructor for GraphicViewPortClass *
|
|
* VVPC::Attach -- Attaches a viewport to a buffer class *
|
|
* VVPC::Change -- Changes position and size of a Video View Port *
|
|
* VBC::VideoBufferClass -- Default constuctor for video buffers *
|
|
* VBC::VideoBufferClass -- Lowlevel constructor for video buffer class *
|
|
* VBC::~VideoBufferClass -- Destructor for the video buffer class *
|
|
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
|
|
|
|
#include "vbuffer.h"
|
|
|
|
/*=========================================================================*/
|
|
/* The following PRIVATE functions are in this file: */
|
|
/*=========================================================================*/
|
|
|
|
|
|
/*= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =*/
|
|
|
|
|
|
/***************************************************************************
|
|
* VVPC::VIDEOVIEWPORTCLASS -- Constructor for basic view port class *
|
|
* *
|
|
* INPUT: VideoBufferClass * vbuffer - buffer to attach to *
|
|
* WORD x - x offset into buffer *
|
|
* WORD y - y offset into buffer *
|
|
* WORD w - view port width in pixels *
|
|
* WORD h - view port height in pixels *
|
|
* *
|
|
* OUTPUT: Constructors may not have a return value *
|
|
* *
|
|
* HISTORY: *
|
|
* 05/09/1994 PWG : Created. *
|
|
*=========================================================================*/
|
|
VideoViewPortClass::VideoViewPortClass(VideoBufferClass *vbuffer, int x, int y, int w, int h)
|
|
{
|
|
Attach(vbuffer, x, y, w, h);
|
|
}
|
|
|
|
/***************************************************************************
|
|
* VVPC::VIDEOVIEWPORTCLASS -- Default constructor for view port class *
|
|
* *
|
|
* INPUT: none *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 05/09/1994 PWG : Created. *
|
|
*=========================================================================*/
|
|
VideoViewPortClass::VideoViewPortClass(void)
|
|
{
|
|
}
|
|
|
|
/***************************************************************************
|
|
* VVPC::~VIDEOVIEWPORTCLASS -- Destructor for GraphicViewPortClass *
|
|
* *
|
|
* INPUT: none *
|
|
* *
|
|
* OUTPUT: A destructor may not return a value. *
|
|
* *
|
|
* HISTORY: *
|
|
* 05/10/1994 PWG : Created. *
|
|
*=========================================================================*/
|
|
VideoViewPortClass::~VideoViewPortClass(void)
|
|
{
|
|
}
|
|
|
|
/***************************************************************************
|
|
* VVPC::ATTACH -- Attaches a viewport to a buffer class *
|
|
* *
|
|
* INPUT: GraphicBufferClass *g_buff - pointer to gbuff to attach to *
|
|
* WORD x - x position to attach to *
|
|
* WORD y - y position to attach to *
|
|
* WORD w - width of the view port *
|
|
* WORD h - height of the view port *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 05/10/1994 PWG : Created. *
|
|
*=========================================================================*/
|
|
void VideoViewPortClass::Attach(VideoBufferClass *vbuffer, int x, int y, int w, int h)
|
|
{
|
|
/*======================================================================*/
|
|
/* Verify that the x and y coordinates are valid and placed within the */
|
|
/* physical buffer. */
|
|
/*======================================================================*/
|
|
if (x < 0) // you cannot place view port off
|
|
x = 0; // the left edge of physical buf
|
|
if (x >= vbuffer->Get_Width()) // you cannot place left edge off
|
|
x = vbuffer->Get_Width() - 1; // the right edge of physical buf
|
|
if (y < 0) // you cannot place view port off
|
|
y = 0; // the top edge of physical buf
|
|
if (y >= vbuffer->Get_Height()) // you cannot place view port off
|
|
y = vbuffer->Get_Height() - 1; // bottom edge of physical buf
|
|
|
|
/*======================================================================*/
|
|
/* Adjust the width and height of necessary */
|
|
/*======================================================================*/
|
|
if (x + w > vbuffer->Get_Width()) // if the x plus width is larger
|
|
w = vbuffer->Get_Width() - x; // than physical, fix width
|
|
|
|
if (y + h > vbuffer->Get_Height()) // if the y plus height is larger
|
|
h = vbuffer->Get_Height() - y; // than physical, fix height
|
|
|
|
/*======================================================================*/
|
|
/* Get a pointer to the top left edge of the buffer. */
|
|
/*======================================================================*/
|
|
Offset = vbuffer->Get_Offset() + (vbuffer->Get_Width() * y) + x;
|
|
|
|
/*======================================================================*/
|
|
/* Copy over all of the variables that we need to store. */
|
|
/*======================================================================*/
|
|
XPos = x;
|
|
YPos = y;
|
|
XAdd = vbuffer->Get_Width() - w;
|
|
Width = w;
|
|
Height = h;
|
|
VideoBuff = vbuffer;
|
|
}
|
|
/***************************************************************************
|
|
* VVPC::CHANGE -- Changes position and size of a Video View Port *
|
|
* *
|
|
* INPUT: WORD the new x pixel position of the Video view port *
|
|
* WORD the new y pixel position of the Video view port *
|
|
* WORD the new width of the viewport in pixels *
|
|
* WORD the new height of the viewport in pixels *
|
|
* *
|
|
* OUTPUT: BOOL whether the Video View Port could be sucessfully *
|
|
* resized. *
|
|
* *
|
|
* WARNINGS: You may not resize a Video View Port which is derived *
|
|
* from a Video View Port Buffer, *
|
|
* *
|
|
* HISTORY: *
|
|
* 09/14/1994 SKB : Created. *
|
|
*=========================================================================*/
|
|
BOOL VideoViewPortClass::Change(int x, int y, int w, int h)
|
|
{
|
|
/*======================================================================*/
|
|
/* Can not change a Video View Port if it is actually the physical */
|
|
/* representation of a Video Buffer. */
|
|
/*======================================================================*/
|
|
if (this == Get_Video_Buffer()) {
|
|
return(FALSE);
|
|
}
|
|
|
|
/*======================================================================*/
|
|
/* Since there is no allocated information, just re-attach it to the */
|
|
/* existing Video buffer as if we were creating the */
|
|
/* VideoViewPort. */
|
|
/*======================================================================*/
|
|
Attach(Get_Video_Buffer(), x, y, w, h);
|
|
return(TRUE);
|
|
}
|
|
/***************************************************************************
|
|
* VBC::VIDEOBUFFERCLASS -- Default constuctor for video buffers *
|
|
* *
|
|
* INPUT: WORD w - width of buffer in pixels (default = 320) *
|
|
* WORD h - height of buffer in pixels (default = 200) *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 05/13/1994 PWG : Created. *
|
|
*=========================================================================*/
|
|
VideoBufferClass::VideoBufferClass(int w, int h)
|
|
{
|
|
Offset = 0xa0000; // Get offset to the buffer
|
|
Width = w; // Record width of Buffer
|
|
Height = h; // Record height of Buffer
|
|
XAdd = 0; // Record XAdd of Buffer
|
|
XPos = 0; // Record XPos of Buffer
|
|
YPos = 0; // Record YPos of Buffer
|
|
VideoBuff = this; // Get a pointer to our self
|
|
}
|
|
|
|
/***************************************************************************
|
|
* VBC::VIDEOBUFFERCLASS -- Lowlevel constructor for video buffer class *
|
|
* *
|
|
* INPUT: UWORD the selector of the memory reference *
|
|
* long the offset of the memory reference *
|
|
* WORD the width of the video buffer *
|
|
* WORD the height of the video buffer *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 06/07/1994 PWG : Created. *
|
|
*=========================================================================*/
|
|
VideoBufferClass::VideoBufferClass(unsigned short selector, long offset, int w, int h)
|
|
{
|
|
Offset = offset; // Get offset to the buffer
|
|
Width = w; // Record width of Buffer
|
|
Height = h; // Record height of Buffer
|
|
XAdd = 0; // Record XAdd of Buffer
|
|
XPos = 0; // Record XPos of Buffer
|
|
YPos = 0; // Record YPos of Buffer
|
|
VideoBuff = this; // Get a pointer to our self
|
|
}
|
|
/*=========================================================================*
|
|
* VBC::~VIDEOBUFFERCLASS -- Destructor for the video buffer class *
|
|
* *
|
|
* INPUT: none *
|
|
* *
|
|
* OUTPUT: none *
|
|
* *
|
|
* HISTORY: *
|
|
* 05/03/1994 PWG : Created. *
|
|
*=========================================================================*/
|
|
VideoBufferClass::~VideoBufferClass()
|
|
{
|
|
}
|
|
|