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/* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#ifndef SCI_GFX_GFX_SYSTEM
#define SCI_GFX_GFX_SYSTEM
#include "common/scummsys.h"
#include "common/rect.h"
#include "sci/tools.h"
#include "sci/gfx/palette.h"
namespace Sci {
#define GFX_DEBUG
/* General output macros */
# define GFXERROR sciprintf("GFX Error: %s, L%d:", __FILE__, __LINE__); error
# define GFXWARN sciprintf("GFX Warning: %s, L%d:", __FILE__, __LINE__); warning
# ifdef GFX_DEBUG
# define GFXDEBUG sciprintf("GFX-debug: %s, L%d:", __FILE__, __LINE__); sciprintf
# else /* !GFX_DEBUG */
# define GFXDEBUG if (0) printf
# endif /* !GFX_DEBUG */
/***********************/
/*** Data structures ***/
/***********************/
#define GFX_COLOR_SYSTEM -1
#define GFX_MODE_IS_UNSCALED(mode) (((mode)->xfact == 1) && ((mode)->yfact == 1))
/* Reverse Alpha: Alpha values 0 mean "transparent" if this is
** enabled */
#define GFX_MODE_FLAG_REVERSE_ALPHA (1<<1)
/** Graphics mode description */
struct gfx_mode_t {
int xfact, yfact; /* Horizontal and vertical scaling factors */
int xsize, ysize; /* Horizontal and vertical size */
int bytespp; /* Bytes per pixel */
uint32 flags; /* GFX_MODE_FLAG_* Flags- see above */
Palette *palette; // Palette or NULL to indicate non-palette mode.
// Palette mode is only supported for bytespp = 1
/* Color masks */
uint32 red_mask, green_mask, blue_mask, alpha_mask;
short red_shift, green_shift, blue_shift, alpha_shift;
/* Each of the mask/shift pairs describe where the corresponding color
** values are stored for the described mode. Internally, color
** calculations are done by using 32 bit values for r, g, b, a. After
** the internal values have been calculated, they are shifted RIGHT
** by the xxx_shift amount described above, then ANDed with the
** corresponding color mask; finally, all three results are ORred to-
** gether. The alpha values are used as appropriate; if alpha_mask is
** zero, then images use a special alpha map. */
};
#define GFX_COLOR_INDEX_UNMAPPED -1
/** Pixmap-specific color entries */
struct gfx_pixmap_color_t{
int global_index; /* Global index color or GFX_COLOR_INDEX_UNMAPPED. */
uint8 r, g, b; /* Real color */
};
/** Full color */
struct gfx_color_t {
PaletteEntry visual;
uint8 alpha; /* transparency = (1-opacity) */
int8 priority, control;
byte mask; /* see mask values below */
};
// TODO: Replace rect_t by Common::Rect
/** Rectangle description */
struct rect_t {
int x, y;
int width, height; /* width, height: (x,y,width,height)=(5,5,1,1) occupies 1 pixel */
};
/* Generates a rect_t from index data
** Parameters: (int x int) x,y: Upper left point of the rectangle
** (int x int) width, height: Horizontal and vertical extension of the rectangle
** Returns : (rect_t) A rectangle matching the supplied parameters
*/
static inline rect_t gfx_rect(int x, int y, int width, int height) {
rect_t rect;
rect.x = x;
rect.y = y;
rect.width = width;
rect.height = height;
return rect;
}
// Temporary helper functions to ease the transition from rect_t to Common::Rect
static inline rect_t toSCIRect(Common::Rect in) {
return gfx_rect(in.left, in.top, in.width(), in.height());
}
static inline Common::Rect toCommonRect(rect_t in) {
return Common::Rect(in.x, in.y, in.x + in.width, in.y + in.height);
}
#define GFX_PRINT_RECT(rect) (rect).x, (rect).y, (rect).width, (rect).height
#define OVERLAP(a, b, z, zl) (a.z >= b.z && a.z < (b.z + b.zl))
/* Determines whether two rects overlap
** Parameters: (rect_t x rect_t) a,b: The two rect_ts to check for overlap
** Returns : (int) 1 if they overlap, 0 otherwise
*/
static inline int gfx_rects_overlap(rect_t a, rect_t b) {
return (OVERLAP(a, b, x, width) || OVERLAP(b, a, x, width)) && (OVERLAP(a, b, y, height) || OVERLAP(b, a, y, height));
}
#undef OVERLAP
/* gfx_rect_fullscreen is declared in gfx/gfx_tools.c */
extern rect_t gfx_rect_fullscreen;
#define GFX_RESID_NONE -1
#define GFX_PIC_COLORS 256
#define GFX_PIXMAP_FLAG_SCALED_INDEX (1<<0) /* Index data is scaled already */
#define GFX_PIXMAP_FLAG_INSTALLED (1<<2) /* Pixmap has been registered */
#define GFX_PIXMAP_FLAG_PALETTIZED (1<<6) /* Indicates a palettized view */
#define GFX_PIXMAP_COLOR_KEY_NONE -1 /* No transpacency colour key */
#define GFX_CURSOR_TRANSPARENT 255 // Cursor colour key
struct gfx_pixmap_t { /* gfx_pixmap_t: Pixel map */
/*** Meta information ***/
int ID; /* Resource ID, or GFX_RESID_NONE for anonymous graphical data */
short loop, cel; /* loop and cel number for views */
/*** Color map ***/
Palette *palette;
int colors_nr() const { return palette ? palette->size() : 0; }
/* color entries, or NULL if the
** default palette is to be used.
** A maximum of 255 colors is allowed; color
** index 0xff is reserved for transparency.
** As a special exception, 256 colors are
** allowed for background pictures (which do
** not use transparency)
*/
uint32 flags;
/*** Hot spot ***/
int xoffset, yoffset; /* x and y coordinates of the 'hot spot' (unscaled) */
/*** Index data ***/
int index_width, index_height; /* width and height of the indexed original image */
byte *index_data; /* Color-index data, or NULL if read from an
** external source
*/
/*** Drawable data ***/
int width, height; /* width and height of the actual image */
int data_size; /* Amount of allocated memory */
byte *data; /* Drawable data, or NULL if not converted. */
byte *alpha_map; /* Byte map with alpha values. It is used only if the
** graphics mode's alpha_mask is zero.
*/
int color_key;
int palette_revision; // Revision of palette at the time data was generated
};
/***********************/
/*** Constant values ***/
/***********************/
/* Return values */
enum gfx_return_value_t {
GFX_OK = 0, /* Indicates "operation successful" */
GFX_ERROR = -1, /* Indicates "operation failed" */
GFX_FATAL = -2
/* Fatal error: Used by graphics drivers to indicate that they were unable to
** do anything useful
*/
};
enum gfx_map_mask_t {/* Map masks */
GFX_MASK_NONE = 0,
GFX_MASK_VISUAL = 1,
GFX_MASK_PRIORITY = 2,
GFX_MASK_CONTROL = 4
};
/* 'no priority' mode */
enum {
GFX_NO_PRIORITY = -1
};
/* Text alignment values */
enum gfx_alignment_t {
ALIGN_RIGHT = -1,
ALIGN_TOP = -1,
ALIGN_CENTER = 1,
ALIGN_LEFT = 0,
ALIGN_BOTTOM = 0
};
enum gfx_line_mode_t {
GFX_LINE_MODE_CORRECT, /* Scaled separately */
GFX_LINE_MODE_FAST, /* Scaled by (xfact+yfact)/2 */
GFX_LINE_MODE_FINE /* Always drawn at width 1 */
};
enum gfx_brush_mode_t {
GFX_BRUSH_MODE_SCALED, /* Just scale the brush pixels */
GFX_BRUSH_MODE_ELLIPSES, /* Replace pixels with ellipses */
GFX_BRUSH_MODE_RANDOM_ELLIPSES, /* Replace pixels with ellipses moved and re-scaled randomly */
GFX_BRUSH_MODE_MORERANDOM /* Distribute randomly */
};
enum gfx_line_style_t {
GFX_LINE_STYLE_NORMAL,
GFX_LINE_STYLE_STIPPLED
};
enum gfx_rectangle_fill_t {
GFX_SHADE_FLAT, /* Don't shade */
GFX_SHADE_VERTICALLY, /* Shade vertically */
GFX_SHADE_HORIZONTALLY /* Shade horizontally */
};
enum gfx_color_mode_t {
GFX_COLOR_MODE_AUTO = 0, /* Auto-detect- handled by the gfxop library */
GFX_COLOR_MODE_INDEX = 1, /* Index mode */
GFX_COLOR_MODE_HIGH = 2, /* High color mode (15bpp or 16 bpp) */
GFX_COLOR_MODE_TRUE = 4 /* True color mode (24 bpp padded to 32 bpp) */
};
} // End of namespace Sci
#endif // SCI_GFX_GFX_SYSTEM
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