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vcmi/client/render/CanvasImage.cpp
Ivan Savenko cca4c0888c In-memory assets generation
All assets generation (large spellbook, terrain animations, etc) are now
done in memory and used as it, without saving to disk.

This should slightly improve load times since there is no encode png /
decode png, and should help with avoiding strange bug when vcmi fails to
load recently saved assets.

If needed, such assets can be force-dumped on disk using already
existing console command
2025-01-30 22:21:38 +00:00

70 lines
1.7 KiB
C++

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