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vcmi/client/renderSDL/SDLImage.h

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/*
* SDLImage.h, 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
*
*/
#pragma once
#include "../render/IImage.h"
#include "../../lib/Point.h"
VCMI_LIB_NAMESPACE_BEGIN
class JsonNode;
VCMI_LIB_NAMESPACE_END
class CDefFile;
struct SDL_Surface;
struct SDL_Palette;
/*
* Wrapper around SDL_Surface
*/
class SDLImageShared final : public ISharedImage, public std::enable_shared_from_this<SDLImageShared>, boost::noncopyable
{
//Surface without empty borders
SDL_Surface * surf;
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SDL_Palette * originalPalette;
//size of left and top borders
Point margins;
//total size including borders
Point fullSize;
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//pre scaled image
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int preScaleFactor;
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// Keep the original palette, in order to do color switching operation
void savePalette();
void optimizeSurface();
public:
//Load image from def file
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SDLImageShared(const CDefFile *data, size_t frame, size_t group=0, int preScaleFactor=1);
//Load from bitmap file
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SDLImageShared(const ImagePath & filename, int preScaleFactor=1);
//Create using existing surface, extraRef will increase refcount on SDL_Surface
SDLImageShared(SDL_Surface * from);
~SDLImageShared();
void draw(SDL_Surface * where, SDL_Palette * palette, const Point & dest, const Rect * src, const ColorRGBA & colorMultiplier, uint8_t alpha, EImageBlitMode mode) const override;
void exportBitmap(const boost::filesystem::path & path, SDL_Palette * palette) const override;
Point dimensions() const override;
bool isTransparent(const Point & coords) const override;
std::shared_ptr<IImage> createImageReference(EImageBlitMode mode) override;
std::shared_ptr<ISharedImage> horizontalFlip() const override;
std::shared_ptr<ISharedImage> verticalFlip() const override;
std::shared_ptr<ISharedImage> scaleInteger(int factor, SDL_Palette * palette) const override;
std::shared_ptr<ISharedImage> scaleTo(const Point & size, SDL_Palette * palette) const override;
friend class SDLImageLoader;
};
class SDLImageBase : public IImage, boost::noncopyable
{
protected:
std::shared_ptr<ISharedImage> image;
uint8_t alphaValue;
EImageBlitMode blitMode;
public:
SDLImageBase(const std::shared_ptr<ISharedImage> & image, EImageBlitMode mode);
bool isTransparent(const Point & coords) const override;
Point dimensions() const override;
void setAlpha(uint8_t value) override;
void setBlitMode(EImageBlitMode mode) override;
std::shared_ptr<ISharedImage> getSharedImage() const override;
};
class SDLImageIndexed final : public SDLImageBase
{
SDL_Palette * currentPalette = nullptr;
SDL_Palette * originalPalette = nullptr;
bool bodyEnabled = true;
bool shadowEnabled = false;
bool overlayEnabled = false;
void setShadowTransparency(float factor);
public:
SDLImageIndexed(const std::shared_ptr<ISharedImage> & image, SDL_Palette * palette, EImageBlitMode mode);
~SDLImageIndexed();
void draw(SDL_Surface * where, const Point & pos, const Rect * src) const override;
void setOverlayColor(const ColorRGBA & color) override;
void playerColored(PlayerColor player) override;
void shiftPalette(uint32_t firstColorID, uint32_t colorsToMove, uint32_t distanceToMove) override;
void adjustPalette(const ColorFilter & shifter, uint32_t colorsToSkipMask) override;
void scaleInteger(int factor) override;
void scaleTo(const Point & size) override;
void exportBitmap(const boost::filesystem::path & path) const override;
void setShadowEnabled(bool on) override;
void setBodyEnabled(bool on) override;
void setOverlayEnabled(bool on) override;
};
class SDLImageRGB final : public SDLImageBase
{
public:
using SDLImageBase::SDLImageBase;
void draw(SDL_Surface * where, const Point & pos, const Rect * src) const override;
void setOverlayColor(const ColorRGBA & color) override;
void playerColored(PlayerColor player) override;
void shiftPalette(uint32_t firstColorID, uint32_t colorsToMove, uint32_t distanceToMove) override;
void adjustPalette(const ColorFilter & shifter, uint32_t colorsToSkipMask) override;
void scaleInteger(int factor) override;
void scaleTo(const Point & size) override;
void exportBitmap(const boost::filesystem::path & path) const override;
void setShadowEnabled(bool on) override;
void setBodyEnabled(bool on) override;
void setOverlayEnabled(bool on) override;
};