mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-10-05 23:44:51 +02:00
131 lines
2.7 KiB
C++
131 lines
2.7 KiB
C++
/* Copyright (c) 2002-2012 Croteam Ltd. All rights reserved. */
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#include "stdh.h"
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#include <Engine/Graphics/Raster.h>
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#include <Engine/Base/ListIterator.inl>
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#include <Engine/Graphics/DrawPort.h>
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#include <Engine/Graphics/GfxLibrary.h>
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/*
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* Raster functions
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*/
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CRaster::CRaster(PIX ulWidth, PIX ulHeight, ULONG ulFlags) : ra_MainDrawPort()
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{
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// remember width and height
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ra_Width = ulWidth;
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ra_Height = ulHeight;
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// clear uninitialized fields
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ra_LockCount = 0;
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// set flags
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ra_Flags = ulFlags;
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// add main drawport to list
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ASSERT( ra_DrawPortList.IsEmpty());
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ra_DrawPortList.AddTail(ra_MainDrawPort.dp_NodeInRaster);
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ra_MainDrawPort.dp_Raster = this;
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ra_pvpViewPort = NULL;
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// when all is initialized correct the drawport dimensions
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RecalculateDrawPortsDimensions();
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}
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CRaster::~CRaster(void)
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{
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// remove main drawport from list of drawports
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ra_MainDrawPort.dp_NodeInRaster.Remove();
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// remove all other drawports in this raster
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FORDELETELIST(CDrawPort, dp_NodeInRaster, ra_DrawPortList, litdp) {
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// and delete each one
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delete &litdp.Current();
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}
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// raster must be unlocked before destroying it
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ASSERT(ra_LockCount==0);
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}
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/* Recalculate dimensions for all drawports. */
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void CRaster::RecalculateDrawPortsDimensions(void)
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{
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// for all drawports in this raster
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FOREACHINLIST(CDrawPort, dp_NodeInRaster, ra_DrawPortList, litdp) {
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// recalculate dimensions to fit new size of raster
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litdp.Current().RecalculateDimensions();
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}
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}
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/*
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* Lock for drawing.
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*/
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BOOL CRaster::Lock()
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{
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ASSERT( this!=NULL);
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ASSERT( ra_LockCount>=0);
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// if raster size is too small in some axis
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if( ra_Width<1 || ra_Height<1) {
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// do not allow locking
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ASSERTALWAYS( "Raster size to small to be locked!");
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return FALSE;
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}
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// if allready locked
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if( ra_LockCount>0) {
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// just increment counter
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ra_LockCount++;
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return TRUE;
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}
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// if not already locked
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else {
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// try to lock with driver
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BOOL bLocked = _pGfx->LockRaster(this);
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// if succeeded in locking
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if( bLocked) {
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// set the counter to 1
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ra_LockCount = 1;
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return TRUE;
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}
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// lock not ok
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return FALSE;
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}
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}
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/*
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* Unlock after drawing.
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*/
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void CRaster::Unlock()
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{
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ASSERT( this!=NULL);
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ASSERT( ra_LockCount>0);
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// decrement counter
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ra_LockCount--;
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// if reached zero
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if( ra_LockCount==0 ) {
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// unlock it with driver
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_pGfx->UnlockRaster(this);
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}
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}
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/*****
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* Change Raster size.
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*/
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void CRaster::Resize( PIX pixWidth, PIX pixHeight)
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{
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ASSERT( pixWidth>0 && pixHeight>0);
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if( pixWidth <=0) pixWidth = 1;
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if( pixHeight<=0) pixHeight = 1;
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ra_Width = pixWidth;
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ra_Height = pixHeight;
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RecalculateDrawPortsDimensions();
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}
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