scummvm/graphics/managed_surface.h
2023-08-13 00:22:10 +02:00

753 lines
25 KiB
C++

/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef GRAPHICS_MANAGED_SURFACE_H
#define GRAPHICS_MANAGED_SURFACE_H
#include "graphics/pixelformat.h"
#include "graphics/surface.h"
#include "graphics/transform_struct.h"
#include "common/types.h"
#include "graphics/blit.h"
#define MS_RGB(R,G,B) (uint32)(((R) << 24) | ((G) << 16) | ((B) << 8) | 0xff)
#define MS_ARGB(A,R,G,B) (uint32)(((R) << 24) | ((G) << 16) | ((B) << 8) | (A))
namespace Graphics {
/**
* @defgroup graphics_managed_surface Managed surface
* @ingroup graphics
*
* @brief The ManagedSurface class that adds extra functionality on top of the Surface class.
*
* @{
*/
/**
* A derived graphics surface, which supports automatically managing the allocated
* surface data block and introduces several new blitting methods.
*/
class ManagedSurface {
private:
/**
* The Graphics::Surface that the managed surface encapsulates.
*/
Surface _innerSurface;
/**
* If set, the inner surface will be freed when the surface is recreated,
* as well as when the surface is destroyed.
*/
DisposeAfterUse::Flag _disposeAfterUse;
/**
* If this managed surface represents a subsection of another managed surface,
* store the owning surface.
*/
ManagedSurface *_owner;
/**
* For a managed surface that has a parent, this represents the offset from
* the parent's top-left corner where this sub-surface starts at.
*/
Common::Point _offsetFromOwner;
/**
* Automatic transparency color. When set, it does not require transparency to be
* explicitly passed, and blit methods pass on to transBlit.
*/
uint _transparentColor;
bool _transparentColorSet;
/**
* Local palette for 8-bit images.
*/
byte _palette[256 * 3];
bool _paletteSet;
protected:
/**
* Inner method for blitting.
*/
void blitFromInner(const Surface &src, const Common::Rect &srcRect,
const Common::Rect &destRect, const byte *srcPalette);
/**
* Inner method for copying another surface into this one at a given destination position.
*/
void transBlitFromInner(const Surface &src, const Common::Rect &srcRect,
const Common::Rect &destRect, uint32 transColor, bool flipped, uint32 overrideColor,
uint32 srcAlpha, const byte *srcPalette, const byte *dstPalette, const Surface *mask, bool maskOnly);
public:
/**
* Clip the given source bounds so the passed destBounds will be entirely on-screen.
*/
bool clip(Common::Rect& srcBounds, Common::Rect& destBounds) const {
return _innerSurface.clip(srcBounds, destBounds);
}
public:
int16 &w; /*!< Width of the surface rectangle. */
int16 &h; /*!< Height of the surface rectangle. */
int32 &pitch; /*!< Pitch of the surface rectangle. See @ref Surface::pitch. */
PixelFormat &format; /*!< Pixel format of the surface. See @ref PixelFormat. */
public:
/**
* Create the managed surface.
*/
ManagedSurface();
/**
* Create a managed surface from another one.
*
* If the source surface is maintaining its own surface data, then
* this surface will create its own surface of the same size and copy
* the contents from the source surface.
*/
ManagedSurface(const ManagedSurface &surf);
/**
* Create the managed surface.
*/
ManagedSurface(int width, int height);
/**
* Create the managed surface.
*/
ManagedSurface(int width, int height, const Graphics::PixelFormat &pixelFormat);
/**
* Create the managed surface.
*/
ManagedSurface(ManagedSurface &surf, const Common::Rect &bounds);
/**
* Create a managed surface from plain Surface.
*
* If disposeAfterUse flag is set (default), the surface will reuse all structures
* from the surface and destroy it, otherwise it will make a copy.
*/
ManagedSurface(Surface *surf, DisposeAfterUse::Flag disposeAfterUse = DisposeAfterUse::YES);
/**
* Create a managed surface from plain Surface.
*/
ManagedSurface(const Surface *surf);
/**
* Destroy the managed surface.
*/
virtual ~ManagedSurface();
/**
* Automatically convert to a Graphics::Surface by
* simply returning the inner surface.
*
* This must be const, because changes are not supposed to be done
* directly to it, since it would bypass dirty rect handling.
*/
operator const Surface &() const { return _innerSurface; }
/**
* Return the underlying Graphics::Surface
*
* If a caller uses the non-const surfacePtr version and changes
* the surface, they'll be responsible for calling addDirtyRect
* for any affected area
*/
const Surface &rawSurface() const { return _innerSurface; }
Surface *surfacePtr() { return &_innerSurface; }
/**
* Reassign one managed surface to another one.
*
* @note If the source has a managed surface, it will be duplicated.
*/
ManagedSurface &operator=(const ManagedSurface &surf);
/**
* Return true if the surface has not yet been allocated.
*/
bool empty() const { return w == 0 || h == 0 || _innerSurface.getPixels() == nullptr; }
/**
* Return true if the surface manages its own pixels.
*/
DisposeAfterUse::Flag disposeAfterUse() const { return _disposeAfterUse; }
/**
* Return the pixel at the specified point.
*
* @param x The x coordinate of the pixel.
* @param y The y coordinate of the pixel.
*
* @return The value of the pixel.
*/
inline uint32 getPixel(int x, int y) const {
return _innerSurface.getPixel(x, y);
}
/**
* Set the pixel at the specified point.
*
* @param x The x coordinate of the pixel.
* @param y The y coordinate of the pixel.
* @param pixel The value of the pixel.
*/
inline void setPixel(int x, int y, uint32 pixel) {
return _innerSurface.setPixel(x, y, pixel);
}
/**
* Return a pointer to the pixel at the specified point.
*
* @param x The x coordinate of the pixel.
* @param y The y coordinate of the pixel.
*
* @return Pointer to the pixel.
*/
inline const void *getBasePtr(int x, int y) const {
return _innerSurface.getBasePtr(x, y);
}
/**
* Return a pointer to the pixel at the specified point.
*
* @param x The x coordinate of the pixel.
* @param y The y coordinate of the pixel.
*
* @return Pointer to the pixel.
*/
inline void *getBasePtr(int x, int y) {
return _innerSurface.getBasePtr(x, y);
}
/**
* Get a reference to the pixel data.
*/
inline void *getPixels() { return _innerSurface.getPixels(); }
/** @overload */
inline const void *getPixels() const { return _innerSurface.getPixels(); }
/**
* Set the pixel data.
*/
virtual void setPixels(void *newPixels);
/**
* Allocate memory for the pixel data of the surface.
*/
virtual void create(int16 width, int16 height);
/**
* Allocate memory for the pixel data of the surface.
*/
virtual void create(int16 width, int16 height, const PixelFormat &pixelFormat);
/**
* Set up the surface as a subsection of another passed parent surface.
*
* This surface will not own the pixels, and any dirty rect notifications will be
* automatically passed to the original parent surface.
*
* @note This differs from Graphics::Surface::getSubArea, in that this
* method only adds a single initial dirty rect for the whole area, and then none more.
*/
virtual void create(ManagedSurface &surf, const Common::Rect &bounds);
/**
* Release the memory used by the pixel memory of this surface.
*
* This is a counterpart of create().
*/
virtual void free();
/**
* Clear any pending dirty rectangles that have been generated for the surface.
*/
virtual void clearDirtyRects() {}
/**
* Base method that descendant classes can override for recording the affected
* dirty areas of the surface.
*/
virtual void addDirtyRect(const Common::Rect &r);
/**
* When the managed surface is a subsection of a parent surface, return the
* the offset in the parent surface where the managed surface starts at.
*/
const Common::Point getOffsetFromOwner() const { return _offsetFromOwner; }
/**
* Return a rect providing the bounds of the surface.
*/
const Common::Rect getBounds() const {
return Common::Rect(0, 0, this->w, this->h);
}
/**
* Copy another surface into this one.
*/
void blitFrom(const Surface &src, const byte *srcPalette = nullptr);
/**
* Copy another surface into this one at a given destination position.
*/
void blitFrom(const Surface &src, const Common::Point &destPos, const byte *srcPalette = nullptr);
/**
* Copy another surface into this one at a given destination position.
*/
void blitFrom(const Surface &src, const Common::Rect &srcRect,
const Common::Point &destPos, const byte *srcPalette = nullptr);
/**
* Copy another surface into this one at a given destination area and perform the potential scaling.
*/
void blitFrom(const Surface &src, const Common::Rect &srcRect,
const Common::Rect &destRect, const byte *srcPalette = nullptr);
/**
* Copy another surface into this one at a given destination area and perform the potential scaling.
*/
void blitFrom(const ManagedSurface &src, const Common::Rect &srcRect,
const Common::Rect &destRect);
/**
* Copy another surface into this one.
*/
void blitFrom(const ManagedSurface &src);
/**
* Copy another surface into this one at a given destination position.
*/
void blitFrom(const ManagedSurface &src, const Common::Point &destPos);
/**
* Copy another surface into this one at a given destination position.
*/
void blitFrom(const ManagedSurface &src, const Common::Rect &srcRect,
const Common::Point &destPos);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param transColor Transparency color to ignore copying of.
* @param flipped Whether to horizontally flip the image.
* @param overrideColor Optional color to use instead of non-transparent pixels from
* the source surface.
* @param srcAlpha Optional additional transparency applied to @p src.
* @param srcPalette Optional palette if the @p src surface uses a CLUT8 pixel format.
*/
void transBlitFrom(const Surface &src, uint32 transColor = 0, bool flipped = false,
uint32 overrideColor = 0, uint32 srcAlpha = 0xff, const byte *srcPalette = nullptr);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param destPos Destination position to draw the surface.
* @param transColor Transparency color to ignore copying of.
* @param flipped Whether to horizontally flip the image.
* @param overrideColor Optional color to use instead of non-transparent pixels from
* the source surface.
* @param srcAlpha Optional additional transparency applied to @p src.
* @param srcPalette Optional palette if the @p src surface uses a CLUT8 pixel format.
*/
void transBlitFrom(const Surface &src, const Common::Point &destPos,
uint32 transColor = 0, bool flipped = false, uint32 overrideColor = 0, uint32 srcAlpha = 0xff, const byte *srcPalette = nullptr);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param destPos Destination position to draw the surface.
* @param mask Mask definition.
* @param srcPalette Optional palette if the @p src surface uses a CLUT8 pixel format.
*/
void transBlitFrom(const Surface &src, const Common::Point &destPos,
const ManagedSurface &mask, const byte *srcPalette = nullptr);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param destPos Destination position to draw the surface.
* @param mask Mask definition.
* @param srcPalette Optional palette if the @p src surface uses a CLUT8 pixel format.
*/
void transBlitFrom(const Surface &src, const Common::Point &destPos,
const Surface &mask, const byte *srcPalette = nullptr);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param srcRect Subsection of the source surface to draw.
* @param destPos Destination position to draw the surface.
* @param transColor Transparency color to ignore copying of.
* @param flipped Specifies whether to horizontally flip the image.
* @param overrideColor Optional color to use instead of non-transparent pixels from
* the source surface.
* @param srcAlpha Optional additional transparency applied to @p src.
* @param srcPalette Optional palette if the @p src surface uses a CLUT8 pixel format.
*/
void transBlitFrom(const Surface &src, const Common::Rect &srcRect, const Common::Point &destPos,
uint32 transColor = 0, bool flipped = false, uint32 overrideColor = 0, uint32 srcAlpha = 0xff, const byte *srcPalette = nullptr);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param srcRect Subsection of the source surface to draw.
* @param destRect Destination area to draw the surface in. This can be sized differently
* then @p srcRect, allowing for arbitrary scaling of the image.
* @param srcPalette Palette for the CLUT8 @p src surface.
*/
void transBlitFrom(const Surface &src, const Common::Rect &srcRect, const Common::Rect &destRect, const byte *srcPalette);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param srcRect Subsection of the source surface to draw.
* @param destRect Destination area to draw the surface in. This can be sized differently
* then @p srcRect, allowing for arbitrary scaling of the image.
* @param transColor Transparency color to ignore copying of.
* @param flipped Whether to horizontally flip the image.
* @param overrideColor Optional color to use instead of non-transparent pixels from
* the source surface.
* @param srcAlpha Optional additional transparency applied to @p src.
* @param mask Optional parameter with mask definition.
* @param maskOnly Optional parameter for using mask over @p transColor.
* @param srcPalette Optional palette if the @p src surface uses a CLUT8 pixel format.
*/
void transBlitFrom(const Surface &src, const Common::Rect &srcRect, const Common::Rect &destRect,
uint32 transColor = 0, bool flipped = false, uint32 overrideColor = 0, uint32 srcAlpha = 0xff,
const Surface *mask = nullptr, bool maskOnly = false, const byte *srcPalette = nullptr);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param transColor Transparency color to ignore copying of.
* @param flipped Whether to horizontally flip the image.
* @param overrideColor Optional color to use instead of non-transparent pixels from
* the source surface.
* @param srcAlpha Optional additional transparency applied to @p src.
*/
void transBlitFrom(const ManagedSurface &src, uint32 transColor = 0, bool flipped = false,
uint32 overrideColor = 0, uint32 srcAlpha = 0xff);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param destPos Destination position to draw the surface.
* @param transColor Transparency color to ignore copying of.
* @param flipped Whether to horizontally flip the image.
* @param overrideColor Optional color to use instead of non-transparent pixels from
* the source surface.
* @param srcAlpha Optional additional transparency applied to @p src.
*/
void transBlitFrom(const ManagedSurface &src, const Common::Point &destPos,
uint32 transColor = 0, bool flipped = false, uint32 overrideColor = 0, uint32 srcAlpha = 0xff);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param destPos Destination position to draw the surface.
* @param mask Mask definition.
*/
void transBlitFrom(const ManagedSurface &src, const Common::Point &destPos,
const ManagedSurface &mask);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param srcRect Subsection of the source surface to draw.
* @param destPos Destination position to draw the surface.
* @param transColor Transparency color to ignore copying of.
* @param flipped Whether to horizontally flip the image.
* @param overrideColor Optional color to use instead of non-transparent pixels from
* the source surface.
* @param srcAlpha Optional additional transparency applied to @p src.
*/
void transBlitFrom(const ManagedSurface &src, const Common::Rect &srcRect, const Common::Point &destPos,
uint32 transColor = 0, bool flipped = false, uint32 overrideColor = 0, uint32 srcAlpha = 0xff);
/**
* Copy another surface into this one, ignoring pixels of a designated transparent color.
*
* @param src Source surface.
* @param srcRect Subsection of the source surface to draw.
* @param destRect Destination area to draw the surface in. This can be sized differently
* then @p srcRect, allowing for arbitrary scaling of the image.
* @param transColor Transparency color to ignore copying of.
* @param flipped Whether to horizontally flip the image.
* @param overrideColor Optional color to use instead of non-transparent pixels from
* the source surface.
* @param srcAlpha Optional additional transparency applied to @p src.
* @param mask Optional parameter with mask definition.
* @param maskOnly Optional parameter for using mask over @p transColor.
*/
void transBlitFrom(const ManagedSurface &src, const Common::Rect &srcRect, const Common::Rect &destRect,
uint32 transColor = 0, bool flipped = false, uint32 overrideColor = 0, uint32 srcAlpha = 0xff,
const Surface *mask = nullptr, bool maskOnly = false);
/**
* Does a blitFrom ignoring any transparency settings
*/
void rawBlitFrom(const ManagedSurface &src, const Common::Rect &srcRect,
const Common::Point &destPos) {
blitFromInner(src._innerSurface, srcRect, Common::Rect(destPos.x, destPos.y, destPos.x + srcRect.width(),
destPos.y + srcRect.height()), src._paletteSet ? src._palette : nullptr);
}
/**
* ManagedSurface::blendBlitTo is meant to be a highly optimized
* blending/blitting function, so it can only accept certain format combinations.
* @return true if the formats can be used by blendBlitTo.
*/
static inline bool isBlendBlitPixelFormatSupported(const PixelFormat &src, const PixelFormat &dst) {
return BlendBlit::getSupportedPixelFormat() == src && BlendBlit::getSupportedPixelFormat() == dst;
}
/**
* @brief Renders this surface onto target
* @param target renders this surface onto this one
* @param src source surface
* @param posX, posY are the position of the src onto this surface
* @param flipping flipping flags (use Graphics::FLIP_FLAGS)
* @param srcRect source clipping
* @param width width of destination
* @param height height of destination
* @param colorMod what color to multiply by (0xffffffff does nothing)
* @param blend the blending mode to use.
* @param alphaType what alpha mode to use. FULL is default
* @return returns the size of the rendered rectangle
*/
Common::Rect blendBlitTo(ManagedSurface &target,
const int posX = 0, const int posY = 0,
const int flipping = FLIP_NONE,
const Common::Rect *srcRect = nullptr,
const uint colorMod = MS_ARGB(255, 255, 255, 255),
const int width = -1, const int height = -1,
const TSpriteBlendMode blend = BLEND_NORMAL,
const AlphaType alphaType = ALPHA_FULL);
Common::Rect blendBlitTo(Surface &target,
const int posX = 0, const int posY = 0,
const int flipping = FLIP_NONE,
const Common::Rect *srcRect = nullptr,
const uint colorMod = MS_ARGB(255, 255, 255, 255),
const int width = -1, const int height = -1,
const TSpriteBlendMode blend = BLEND_NORMAL,
const AlphaType alphaType = ALPHA_FULL);
/**
* Clear the entire surface.
*/
void clear(uint32 color = 0);
/**
* Mark the entire surface as dirty.
*/
void markAllDirty();
/**
* Copy a bitmap to the internal buffer of the surface.
*
* The pixel format of the buffer must match the pixel format of the surface.
*/
void copyRectToSurface(const void *buffer, int srcPitch, int destX, int destY, int width, int height) {
_innerSurface.copyRectToSurface(buffer, srcPitch, destX, destY, width, height);
}
/**
* Copy a bitmap to the internal buffer of the surface.
*
* The pixel format of the buffer must match the pixel format of the surface.
*/
void copyRectToSurface(const Graphics::Surface &srcSurface, int destX, int destY, const Common::Rect subRect) {
_innerSurface.copyRectToSurface(srcSurface, destX, destY, subRect);
}
/**
* Copy a bitmap to the internal buffer of the surface.
*
* The pixel format of the buffer must match the pixel format of the surface.
*/
void copyRectToSurfaceWithKey(const void *buffer, int srcPitch, int destX, int destY, int width, int height, uint32 key) {
_innerSurface.copyRectToSurfaceWithKey(buffer, srcPitch, destX, destY, width, height, key);
}
/**
* Copy a bitmap to the internal buffer of the surface.
*
* The pixel format of the buffer must match the pixel format of the surface.
*/
void copyRectToSurfaceWithKey(const Graphics::Surface &srcSurface, int destX, int destY, const Common::Rect subRect, uint32 key) {
_innerSurface.copyRectToSurfaceWithKey(srcSurface, destX, destY, subRect, key);
}
/**
* Copy the data from another surface, reinitializing the
* surface to match the dimensions of the passed surface.
*/
void copyFrom(const ManagedSurface &surf);
/**
* Copy the data from another surface, reinitializing the
* surface to match the dimensions of the passed surface.
*/
void copyFrom(const Surface &surf);
/**
* Draw a line.
*/
void drawLine(int x0, int y0, int x1, int y1, uint32 color) {
_innerSurface.drawLine(x0, y0, x1, y1, color);
addDirtyRect(Common::Rect(MIN(x0, x1), MIN(y0, y1), MAX(x0, x1 + 1), MAX(y0, y1 + 1)));
}
/**
* Draw a thick line.
*/
void drawThickLine(int x0, int y0, int x1, int y1, int penX, int penY, uint32 color) {
_innerSurface.drawThickLine(x0, y0, x1, y1, penX, penY, color);
addDirtyRect(Common::Rect(MIN(x0, x1 + penX), MIN(y0, y1 + penY), MAX(x0, x1 + penX), MAX(y0, y1 + penY)));
}
/**
* Draw a horizontal line.
*/
void hLine(int x, int y, int x2, uint32 color) {
_innerSurface.hLine(x, y, x2, color);
addDirtyRect(Common::Rect(x, y, x2 + 1, y + 1));
}
/**
* Draw a vertical line.
*/
void vLine(int x, int y, int y2, uint32 color) {
_innerSurface.vLine(x, y, y2, color);
addDirtyRect(Common::Rect(x, y, x + 1, y2 + 1));
}
/**
* Fill a rect with a given color.
*/
void fillRect(Common::Rect r, uint32 color) {
_innerSurface.fillRect(r, color);
addDirtyRect(r);
}
/**
* Draw a frame around a specified rect.
*/
void frameRect(const Common::Rect &r, uint32 color) {
_innerSurface.frameRect(r, color);
addDirtyRect(r);
}
/**
* Return a sub-area of the screen, but only add a single initial dirty rect
* for the retrieved area.
*/
Surface getSubArea(const Common::Rect &area) {
addDirtyRect(area);
return _innerSurface.getSubArea(area);
}
/**
* Convert the data to another pixel format.
*
* This works in-place. This means it does not create an additional buffer
* for the conversion process. The value of 'pixels' might change though
* (that means it might realloc the pixel data).
*
* @param dstFormat The desired format.
* @param palette The palette (in RGB888), if the source format has a bpp of 1.
*/
void convertToInPlace(const PixelFormat &dstFormat, const byte *palette = nullptr) {
_innerSurface.convertToInPlace(dstFormat, palette);
}
/**
* Return the current transparent color.
*/
uint getTransparentColor() const { return _transparentColor; }
/**
* Set the transparent color.
*/
void setTransparentColor(uint32 color) {
_transparentColor = color;
_transparentColorSet = true;
}
/**
* Clear the transparent color setting.
*/
void clearTransparentColor() {
_transparentColorSet = false;
}
/**
* Return true if a transparent color has been set.
*/
bool hasTransparentColor() const {
return _transparentColorSet;
}
/**
* Clear any existing palette.
*/
void clearPalette() {
_paletteSet = false;
}
/**
* Return true if a palette has been set.
*/
bool hasPalette() const {
return _paletteSet;
}
/**
* Grab the palette using RGB tuples.
*/
void grabPalette(byte *colors, uint start, uint num) const;
/**
* Set the palette using RGB tuples.
*/
void setPalette(const byte *colors, uint start, uint num);
};
/** @} */
} // End of namespace Graphics
#endif