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75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
/*
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* CanvasImage.cpp, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#include "StdInc.h"
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#include "CanvasImage.h"
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#include "../gui/CGuiHandler.h"
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#include "../render/IScreenHandler.h"
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#include "../renderSDL/SDL_Extensions.h"
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#include "../renderSDL/SDLImageScaler.h"
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#include "../renderSDL/SDLImage.h"
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#include <SDL_image.h>
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#include <SDL_surface.h>
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CanvasImage::CanvasImage(const Point & size, CanvasScalingPolicy scalingPolicy)
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: surface(CSDL_Ext::newSurface(scalingPolicy == CanvasScalingPolicy::IGNORE ? size : (size * GH.screenHandler().getScalingFactor())))
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, scalingPolicy(scalingPolicy)
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{
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}
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CanvasImage::~CanvasImage()
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{
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SDL_FreeSurface(surface);
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}
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void CanvasImage::draw(SDL_Surface * where, const Point & pos, const Rect * src, int scalingFactor) const
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{
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if(src)
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CSDL_Ext::blitSurface(surface, *src, where, pos);
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else
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CSDL_Ext::blitSurface(surface, where, pos);
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}
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void CanvasImage::scaleTo(const Point & size, EScalingAlgorithm algorithm)
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{
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Point scaledSize = size * GH.screenHandler().getScalingFactor();
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SDLImageScaler scaler(surface);
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scaler.scaleSurface(scaledSize, algorithm);
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SDL_FreeSurface(surface);
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surface = scaler.acquireResultSurface();
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}
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void CanvasImage::exportBitmap(const boost::filesystem::path & path) const
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{
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IMG_SavePNG(surface, path.string().c_str());
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}
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Canvas CanvasImage::getCanvas()
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{
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return Canvas::createFromSurface(surface, scalingPolicy);
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}
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Rect CanvasImage::contentRect() const
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{
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return Rect(Point(0, 0), dimensions());
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}
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Point CanvasImage::dimensions() const
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{
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return {surface->w, surface->h};
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}
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std::shared_ptr<ISharedImage> CanvasImage::toSharedImage()
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{
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return std::make_shared<SDLImageShared>(surface);
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}
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