243 lines
7.5 KiB
C
243 lines
7.5 KiB
C
/***************************************************************************
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gb.paint.h
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(c) 2000-2017 Benoît Minisini <g4mba5@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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***************************************************************************/
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#ifndef __GB_PAINT_H
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#define __GB_PAINT_H
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#include "gb_common.h"
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#include "gambas.h"
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#include "gb.draw.h"
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enum {
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GB_PAINT_EXTEND_PAD,
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GB_PAINT_EXTEND_REPEAT,
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GB_PAINT_EXTEND_REFLECT
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};
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enum {
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GB_PAINT_FILL_RULE_WINDING,
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GB_PAINT_FILL_RULE_EVEN_ODD
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};
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enum {
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GB_PAINT_LINE_CAP_BUTT,
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GB_PAINT_LINE_CAP_ROUND,
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GB_PAINT_LINE_CAP_SQUARE
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};
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enum {
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GB_PAINT_LINE_JOIN_MITER,
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GB_PAINT_LINE_JOIN_ROUND,
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GB_PAINT_LINE_JOIN_BEVEL
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};
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enum {
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GB_PAINT_OPERATOR_CLEAR,
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GB_PAINT_OPERATOR_SOURCE,
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GB_PAINT_OPERATOR_OVER,
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GB_PAINT_OPERATOR_IN,
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GB_PAINT_OPERATOR_OUT,
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GB_PAINT_OPERATOR_ATOP,
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GB_PAINT_OPERATOR_DEST,
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GB_PAINT_OPERATOR_DEST_OVER,
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GB_PAINT_OPERATOR_DEST_IN,
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GB_PAINT_OPERATOR_DEST_OUT,
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GB_PAINT_OPERATOR_DEST_ATOP,
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GB_PAINT_OPERATOR_XOR,
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GB_PAINT_OPERATOR_ADD,
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GB_PAINT_OPERATOR_SATURATE
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};
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enum {
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GB_PAINT_PATH_MOVE,
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GB_PAINT_PATH_LINE
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};
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struct GB_PAINT_DESC;
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typedef
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struct {
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int x, y, w, h;
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}
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GB_RECT;
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typedef
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struct {
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float x1, y1, x2, y2;
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}
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GB_EXTENTS;
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typedef
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void *GB_BRUSH;
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typedef
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void *GB_TRANSFORM;
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typedef
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struct {
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GB_BASE ob;
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GB_EXTENTS ext;
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}
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PAINT_EXTENTS;
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typedef
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struct {
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GB_BASE ob;
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GB_TRANSFORM transform;
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}
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PAINT_MATRIX;
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typedef
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struct {
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GB_BASE ob;
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struct GB_PAINT_DESC *desc; // drawing driver
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GB_BRUSH brush; // brush
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}
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PAINT_BRUSH;
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typedef
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struct GB_PAINT {
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struct GB_PAINT_DESC *desc; // drawing driver
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struct GB_PAINT *previous; // previous drawing context
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void *device; // drawing object
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struct {
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double x;
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double y;
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double width;
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double height;
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} area; // drawing area
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int resolutionX; // device horizontal resolution in DPI
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int resolutionY; // device vertical resolution in DPI
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PAINT_BRUSH *brush; // current brush
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void *extra; // driver-specific state
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unsigned opened : 1; // if the painting has been opened
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unsigned other : 1; // if painting are imbricated on that device
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unsigned has_path : 1; // if there is a current path
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void *tag; // needed to support the old Draw class
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}
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GB_PAINT;
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typedef
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void (*GB_PAINT_OUTLINE_CB)(int, float, float);
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typedef
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struct GB_PAINT_DESC {
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// Size of the GB_PAINT structure extra data
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int size;
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// Begins and terminates the drawing
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int (*Begin)(GB_PAINT *d);
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void (*End)(GB_PAINT *d);
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void (*Save)(GB_PAINT *d);
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void (*Restore)(GB_PAINT *d);
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void (*Antialias)(GB_PAINT *d, int set, int *antialias);
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void (*Font)(GB_PAINT *d, int set, GB_FONT *font);
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void (*Background)(GB_PAINT *d, int set, GB_COLOR *color);
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void (*Invert)(GB_PAINT *d, int set, int *invert);
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void (*Clip)(GB_PAINT *d, int preserve);
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void (*ResetClip)(GB_PAINT *d);
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void (*ClipExtents)(GB_PAINT *d, GB_EXTENTS *ext);
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void (*ClipRect)(GB_PAINT *d, int x, int y, int w, int h);
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void (*Fill)(GB_PAINT *d, int preserve);
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void (*Stroke)(GB_PAINT *d, int preserve);
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void (*PathExtents)(GB_PAINT *d, GB_EXTENTS *ext);
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int (*PathContains)(GB_PAINT *d, float x, float y);
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void (*PathOutline)(GB_PAINT *d, GB_PAINT_OUTLINE_CB cb);
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void (*Dash)(GB_PAINT *d, int set, float **dash, int *count);
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void (*DashOffset)(GB_PAINT *d, int set, float *offset);
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void (*FillRule)(GB_PAINT *d, int set, int *value);
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void (*FillStyle)(GB_PAINT *d, int set, int *value);
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void (*LineCap)(GB_PAINT *d, int set, int *value);
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void (*LineJoin)(GB_PAINT *d, int set, int *value);
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void (*LineWidth)(GB_PAINT *d, int set, float *value);
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void (*MiterLimit)(GB_PAINT *d, int set, float *value);
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void (*Operator)(GB_PAINT *d, int set, int *value);
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void (*NewPath)(GB_PAINT *d);
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void (*ClosePath)(GB_PAINT *d);
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void (*Arc)(GB_PAINT *d, float xc, float yc, float radius, float angle, float length, bool pie);
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void (*Ellipse)(GB_PAINT *d, float x, float y, float width, float height, float angle, float length, bool pie);
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void (*Rectangle)(GB_PAINT *d, float x, float y, float width, float height);
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void (*GetCurrentPoint)(GB_PAINT *d, float *x, float *y);
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void (*MoveTo)(GB_PAINT *d, float x, float y);
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void (*LineTo)(GB_PAINT *d, float x, float y);
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void (*CurveTo)(GB_PAINT *d, float x1, float y1, float x2, float y2, float x3, float y3);
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void (*Text)(GB_PAINT *d, const char *text, int len, float w, float h, int align, bool draw);
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void (*TextExtents)(GB_PAINT *d, const char *text, int len, GB_EXTENTS *ext);
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void (*TextSize)(GB_PAINT *d, const char *text, int len, float *w, float *h);
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void (*RichText)(GB_PAINT *d, const char *text, int len, float w, float h, int align, bool draw);
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void (*RichTextExtents)(GB_PAINT *d, const char *text, int len, GB_EXTENTS *ext, float width);
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void (*RichTextSize)(GB_PAINT *d, const char *text, int len, float width, float *w, float *h);
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void (*Matrix)(GB_PAINT *d, int set, GB_TRANSFORM matrix);
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void (*SetBrush)(GB_PAINT *d, GB_BRUSH brush);
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void (*BrushOrigin)(GB_PAINT *d, int set, float *x, float *y);
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void (*DrawImage)(GB_PAINT *d, GB_IMAGE image, float x, float y, float w, float h, float opacity, GB_RECT *source);
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void (*DrawPicture)(GB_PAINT *d, GB_PICTURE picture, float x, float y, float w, float h, GB_RECT *source);
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void (*GetPictureInfo)(GB_PAINT *d, GB_PICTURE picture, GB_PICTURE_INFO *info);
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void (*FillRect)(GB_PAINT *d, float x, float y, float width, float height, GB_COLOR color);
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struct {
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void (*Free)(GB_BRUSH brush);
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void (*Color)(GB_BRUSH *brush, GB_COLOR color);
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void (*Image)(GB_BRUSH *brush, GB_IMAGE image);
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void (*LinearGradient)(GB_BRUSH *brush, float x0, float y0, float x1, float y1, int nstop, double *positions, GB_COLOR *colors, int extend);
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void (*RadialGradient)(GB_BRUSH *brush, float cx, float cy, float r, float fx, float fy, int nstop, double *positions, GB_COLOR *colors, int extend);
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void (*Matrix)(GB_BRUSH brush, int set, GB_TRANSFORM matrix);
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}
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Brush;
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}
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GB_PAINT_DESC;
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typedef
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struct GB_PAINT_MATRIX_DESC {
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void (*Create)(GB_TRANSFORM *matrix);
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void (*Copy)(GB_TRANSFORM *matrix, GB_TRANSFORM copy);
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void (*Delete)(GB_TRANSFORM *matrix);
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void (*Init)(GB_TRANSFORM matrix, float xx, float yx, float xy, float yy, float x0, float y0);
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void (*Translate)(GB_TRANSFORM matrix, float tx, float ty);
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void (*Scale)(GB_TRANSFORM matrix, float sx, float sy);
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void (*Rotate)(GB_TRANSFORM matrix, float angle);
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int (*Invert)(GB_TRANSFORM matrix);
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void (*Multiply)(GB_TRANSFORM matrix, GB_TRANSFORM matrix2);
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void (*Map)(GB_TRANSFORM matrix, double *x, double *y);
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}
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GB_PAINT_MATRIX_DESC;
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#endif
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