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127 lines
4.0 KiB
C++
127 lines
4.0 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef MUTATIONOFJB_UTIL_H
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#define MUTATIONOFJB_UTIL_H
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#include "common/rect.h"
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#include "graphics/managed_surface.h"
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#include "graphics/surface.h"
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namespace Common {
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class String;
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}
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namespace MutationOfJB {
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void reportFileMissingError(const char *fileName);
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Common::String toUpperCP895(const Common::String &str);
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// Taken from ManagedSurface::clip.
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template<typename SurfaceType>
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bool clipBounds(Common::Rect &srcBounds, Common::Rect &destBounds, SurfaceType &destSurf) {
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if (destBounds.left >= destSurf.w || destBounds.top >= destSurf.h ||
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destBounds.right <= 0 || destBounds.bottom <= 0)
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return false;
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// Clip the bounds if source is too big to fit into destination.
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if (destBounds.right > destSurf.w) {
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srcBounds.right -= destBounds.right - destSurf.w;
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destBounds.right = destSurf.w;
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}
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if (destBounds.bottom > destSurf.h) {
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srcBounds.bottom -= destBounds.bottom - destSurf.h;
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destBounds.bottom = destSurf.h;
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}
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if (destBounds.top < 0) {
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srcBounds.top += -destBounds.top;
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destBounds.top = 0;
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}
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if (destBounds.left < 0) {
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srcBounds.left += -destBounds.left;
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destBounds.left = 0;
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}
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return true;
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}
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template<typename BlitOp>
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void blit_if(const Graphics::Surface &src, const Common::Rect &srcRect, Graphics::Surface &dest, const Common::Point &destPos, BlitOp blitOp) {
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Common::Rect srcBounds = srcRect;
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Common::Rect destBounds(destPos.x, destPos.y, destPos.x + srcRect.width(), destPos.y + srcRect.height());
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assert(srcRect.isValidRect());
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assert(dest.format == src.format);
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if (!clipBounds(srcBounds, destBounds, dest))
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return;
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for (int y = 0; y < srcBounds.height(); ++y) {
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const byte *srcP = reinterpret_cast<const byte *>(src.getBasePtr(srcBounds.left, srcBounds.top + y));
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const byte *srcEndP = srcP + srcBounds.width();
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byte *destP = reinterpret_cast<byte *>(dest.getBasePtr(destBounds.left, destBounds.top + y));
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while (srcP != srcEndP) {
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const byte newColor = blitOp(*srcP, *destP);
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if (*destP != newColor) {
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*destP = newColor;
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}
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++srcP;
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++destP;
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}
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}
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}
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template<typename BlitOp>
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void blit_if(const Graphics::Surface &src, const Common::Rect &srcRect, Graphics::ManagedSurface &dest, const Common::Point &destPos, BlitOp blitOp) {
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Common::Rect srcBounds = srcRect;
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Common::Rect destBounds(destPos.x, destPos.y, destPos.x + srcRect.width(), destPos.y + srcRect.height());
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assert(srcRect.isValidRect());
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assert(dest.format == src.format);
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if (!clipBounds(srcBounds, destBounds, dest))
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return;
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Graphics::Surface destSurf = dest.getSubArea(destBounds); // This will invalidate the rectangle.
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blit_if(src, srcRect, destSurf, Common::Point(0, 0), blitOp);
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}
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template<typename BlitOp>
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void blit_if(const Graphics::Surface &src, Graphics::Surface &dest, const Common::Point &destPos, BlitOp blitOp) {
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blit_if(src, Common::Rect(0, 0, src.w, src.h), dest, destPos, blitOp);
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}
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template<typename BlitOp>
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void blit_if(const Graphics::Surface &src, Graphics::ManagedSurface &dest, const Common::Point &destPos, BlitOp blitOp) {
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blit_if(src, Common::Rect(0, 0, src.w, src.h), dest, destPos, blitOp);
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}
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}
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#endif
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