293 lines
7.4 KiB
C++
293 lines
7.4 KiB
C++
/*
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* Portions of this file are copyright Rebirth contributors and licensed as
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* described in COPYING.txt.
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* Portions of this file are copyright Parallax Software and licensed
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* according to the Parallax license below.
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* See COPYING.txt for license details.
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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/*
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*
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* Definitions for graphics lib.
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*
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*/
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#pragma once
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#include "fwd-gr.h"
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#include "pstypes.h"
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#include "maths.h"
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#include "palette.h"
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#include "dxxsconf.h"
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#include "dsx-ns.h"
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#include "fmtcheck.h"
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#include "pack.h"
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#include "compiler-array.h"
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#include "compiler-exchange.h"
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struct grs_point
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{
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fix x,y;
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};
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struct grs_bitmap : prohibit_void_ptr<grs_bitmap>
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{
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uint16_t bm_x,bm_y; // Offset from parent's origin
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uint16_t bm_w,bm_h; // width,height
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private:
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uint8_t bm_type;
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uint8_t bm_flags;
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public:
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uint8_t get_type() const
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{
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return bm_type;
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}
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void set_type(uint8_t t)
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{
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bm_type = t;
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}
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uint8_t get_flags() const
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{
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return bm_flags;
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}
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uint8_t get_flag_mask(const uint8_t mask) const
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{
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return get_flags() & mask;
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}
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void set_flags(const uint8_t f)
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{
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bm_flags = f;
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}
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void clear_flags()
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{
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set_flags(0);
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}
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void set_flag_mask(const bool set, const uint8_t mask)
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{
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const auto f = get_flags();
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set_flags(set ? f | mask : f & ~mask);
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}
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void add_flags(const uint8_t f)
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{
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bm_flags |= f;
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}
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// bit 1 on means it has supertransparency
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// bit 2 on means it doesn't get passed through lighting.
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short bm_rowsize; // unsigned char offset to next row
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array<fix, 3> avg_color_rgb; // same as above but real rgb value to be used to textured objects that should emit light
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union {
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const uint8_t *bm_data; // ptr to pixel data...
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// Linear = *parent+(rowsize*y+x)
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// ModeX = *parent+(rowsize*y+x/4)
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// SVGA = *parent+(rowsize*y+x)
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uint8_t *bm_mdata;
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};
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const uint8_t *get_bitmap_data() const { return bm_data; }
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uint8_t *get_bitmap_data() { return bm_mdata; }
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struct grs_bitmap *bm_parent;
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#if DXX_USE_OGL
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struct ogl_texture *gltexture;
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#endif /* def OGL */
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ubyte avg_color; // Average color of all pixels in texture map.
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};
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//font structure
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struct grs_font : public prohibit_void_ptr<grs_font>
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{
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short ft_w; // Width in pixels
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short ft_h; // Height in pixels
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short ft_flags; // Proportional?
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short ft_baseline; //
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ubyte ft_minchar; // First char defined by this font
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ubyte ft_maxchar; // Last char defined by this font
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array<char, 13> ft_filename;
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const uint8_t *ft_data; // Ptr to raw data.
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const uint8_t *const *ft_chars; // Ptrs to data for each char (required for prop font)
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const int16_t *ft_widths; // Array of widths (required for prop font)
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const uint8_t *ft_kerndata; // Array of kerning triplet data
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std::unique_ptr<uint8_t[]> ft_allocdata;
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#if DXX_USE_OGL
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// These fields do not participate in disk i/o!
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std::unique_ptr<grs_bitmap[]> ft_bitmaps;
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grs_bitmap ft_parent_bitmap;
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#endif /* def OGL */
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};
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struct grs_canvas : prohibit_void_ptr<grs_canvas>
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{
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grs_bitmap cv_bitmap; // the bitmap for this canvas
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const grs_font * cv_font; // the currently selected font
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short cv_font_fg_color; // current font foreground color (-1==Invisible)
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short cv_font_bg_color; // current font background color (-1==Invisible)
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unsigned cv_fade_level; // transparency level
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};
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//=========================================================================
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// System functions:
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// setup and set mode. this creates a grs_screen structure and sets
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// grd_curscreen to point to it. grs_curcanv points to this screen's
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// canvas. Saves the current VGA state and screen mode.
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#ifdef __cplusplus
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union screen_mode
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{
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private:
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uint32_t wh;
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public:
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struct {
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uint16_t width, height;
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};
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bool operator==(const screen_mode &rhs)
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{
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return wh == rhs.wh;
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}
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bool operator!=(const screen_mode &rhs)
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{
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return !(*this == rhs);
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}
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screen_mode() = default;
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constexpr screen_mode(uint16_t &&w, uint16_t &&h) :
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width(w), height(h)
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{
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}
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};
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static inline uint16_t SM_W(const screen_mode &s)
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{
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return s.width;
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}
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static inline uint16_t SM_H(const screen_mode &s)
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{
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return s.height;
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}
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class grs_screen : prohibit_void_ptr<grs_screen>
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{ // This is a video screen
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screen_mode sc_mode;
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public:
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grs_canvas sc_canvas; // Represents the entire screen
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fix sc_aspect; //aspect ratio (w/h) for this screen
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uint16_t get_screen_width() const
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{
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return SM_W(sc_mode);
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}
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uint16_t get_screen_height() const
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{
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return SM_H(sc_mode);
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}
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screen_mode get_screen_mode() const
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{
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return sc_mode;
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}
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void set_screen_width_height(uint16_t w, uint16_t h)
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{
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sc_mode.width = w;
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sc_mode.height = h;
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}
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};
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//=========================================================================
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// Canvas functions:
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// Makes a new canvas. allocates memory for the canvas and its bitmap,
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// including the raw pixel buffer.
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namespace dcx {
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struct grs_main_canvas : grs_canvas
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{
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~grs_main_canvas();
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};
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// Creates a canvas that is part of another canvas. this can be used to make
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// a window on the screen. the canvas structure is malloc'd; the address of
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// the raw pixel data is inherited from the parent canvas.
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struct grs_subcanvas : grs_canvas {};
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// Free the bitmap and its pixel data
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class grs_main_bitmap : public grs_bitmap
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{
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public:
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grs_main_bitmap();
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grs_main_bitmap(const grs_main_bitmap &) = delete;
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grs_main_bitmap &operator=(const grs_main_bitmap &) = delete;
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grs_main_bitmap(grs_main_bitmap &&r) :
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grs_bitmap(std::move(static_cast<grs_bitmap &>(r)))
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{
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r.bm_data = nullptr;
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}
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grs_main_bitmap &operator=(grs_main_bitmap &&r)
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{
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grs_bitmap::operator=(std::move(static_cast<grs_bitmap &>(r)));
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bm_data = exchange(r.bm_data, nullptr);
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return *this;
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}
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~grs_main_bitmap()
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{
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reset();
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}
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void reset()
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{
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gr_free_bitmap_data(*this);
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}
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};
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// Free the bitmap, but not the pixel data buffer
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class grs_subbitmap : public grs_bitmap
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{
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};
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}
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static inline void gr_set_bitmap_flags(grs_bitmap &bm, uint8_t flags)
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{
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bm.set_flags(flags);
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}
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static inline void gr_set_transparent(grs_bitmap &bm, bool bTransparent)
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{
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bm.set_flag_mask(bTransparent, BM_FLAG_TRANSPARENT);
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}
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namespace dcx {
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struct font_delete
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{
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void operator()(grs_font *p) const
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{
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gr_close_font(std::unique_ptr<grs_font>(p));
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}
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};
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}
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// Writes a string using current font. Returns the next column after last char.
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static inline void gr_set_curfont(grs_canvas &canvas, const grs_font_ptr &p)
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{
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gr_set_curfont(canvas, p.get());
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}
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static inline void gr_set_current_canvas(grs_canvas_ptr &canv)
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{
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gr_set_current_canvas(canv.get());
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}
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static inline void gr_set_current_canvas(grs_subcanvas_ptr &canv)
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{
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gr_set_current_canvas(canv.get());
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}
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#endif
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