draw.h

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#ifndef __DRAW_H__
#define __DRAW_H__
 
#include "chitralekha.h"
#include "color.h"
#include <_xeneva.h>
 
#ifdef __cplusplus
XE_EXTERN {
#endif
 
#pragma pack(push, 1)
    typedef struct _chrect_ {
        int32_t x;
        int32_t y;
        int32_t w;
        int32_t h;
    } ChRect;
#pragma pack(pop)
 
    /*
    * ChDrawRect -- draw a rectangle
    * @param canvas -- Pointer to canvas
    * @param x -- X coord
    * @param y -- Y coord
    * @param w -- Width of the rect
    * @param h -- Height of the rect
    */
    XE_LIB void ChDrawRect(
        ChCanvas * canvas, unsigned x, unsigned y, unsigned w, unsigned h, uint32_t col);
 
    /*
    * ChDrawRectClipped -- draw a rectangle within clipped boundary
    * @param canv -- Pointer to canvas
    * @param x -- X coord
    * @param y -- Y coord
    * @param w -- Width of the rect
    * @param h -- Height of the rect
    * @param clip -- Pointer to clip rect
    * @param col -- Color of the rectangle
    */
    XE_LIB void ChDrawRectClipped(ChCanvas * canv,
                                  unsigned x,
                                  unsigned y,
                                  unsigned w,
                                  unsigned h,
                                  ChRect* clip,
                                  uint32_t col);
 
    /*
    * ChDrawVerticalLine -- draws a vertical line
    * @param canv -- Pointer to canvas
    * @paam x -- X coord
    * @param y - y coord
    * @param len -- length of the line
    * @param col -- Color to use
    */
    XE_LIB void ChDrawVerticalLine(
        ChCanvas * canv, unsigned x, unsigned y, unsigned len, uint32_t col);
 
    /*
    * ChDrawVerticalLine -- draws a horizontal line
    * @param canv -- Pointer to canvas
    * @paam x -- X coord
    * @param y - y coord
    * @param len -- length of the line
    * @param col -- Color to use
    */
    XE_LIB void ChDrawHorizontalLine(
        ChCanvas * canv, unsigned x, unsigned y, unsigned len, uint32_t col);
 
    /*
    * ChDrawRectUnfilled -- draws a unfilled only outlined rectangle
    * @param canv -- Pointer to canvas
    * @param x -- X coordinate
    * @param y -- Y coordinate
    * @param w -- Width of the rect
    * @param h -- Height of the rect
    */
    XE_LIB void ChDrawRectUnfilled(
        ChCanvas * canv, unsigned x, unsigned y, unsigned w, unsigned h, uint32_t color);
 
    /*
    * ChDrawRectUnfilledClipped -- draw a unfilled rectangle within clipped boundary
    * @param canv -- Pointer to canvas
    * @param x -- X coord
    * @param y -- Y coord
    * @param w -- Width of the rect
    * @param h -- Height of the rect
    * @param clip -- Pointer to clip rect
    * @param col -- Color of the rectangle
    */
    XE_LIB void ChDrawRectUnfilledClipped(ChCanvas * canv,
                                          unsigned x,
                                          unsigned y,
                                          unsigned w,
                                          unsigned h,
                                          ChRect* clip,
                                          uint32_t col);
 
    /*
    * ChDrawFilledCircle -- draws a filled circle
    * @param canv -- Pointer to canvas
    * @param x -- X coordinate
    * @param y -- Y coordinate
    * @param radius -- radius of the circle
    * @param fill_col -- color to use while filling
    */
    XE_LIB void ChDrawFilledCircle(ChCanvas * canv, int x, int y, int radius, uint32_t fill_col);
 
    /*
     * ChDrawFilledCircleAA -- Draw antialiased filled cirlce
     * @param canv -- Pointer to canvas
     * @param cx -- x location
     * @param cy -- y location
     * @param radius -- radius of the circle
     * @param color -- color of the circle
     */
    XE_LIB void ChDrawFilledCircleAA(ChCanvas * canv, int cx, int cy, int radius, uint32_t color);
 
    /*
    * ChDrawLine -- draws a line
    * @param canv -- Pointer to canvas
    * @param x1 -- X coord of point one
    * @param y1 -- Y coord of point one
    * @param x2 -- X coord of point two
    * @param y2 -- Y coord of point two
    * @param color -- color to use
    */
    XE_LIB void ChDrawLine(ChCanvas * canv, int x1, int y1, int x2, int y2, uint32_t color);
 
    /*
    * ChDrawCircleUnfilled -- Draws a circle without filling its internal
    * @param canvas -- Pointer to canvas
    * @param x -- X coord of the circle
    * @param y -- Y coord of the circle
    * @param radius -- radius of the circle
    * @param color -- outline color
    */
    XE_LIB void ChDrawCircleUnfilled(ChCanvas * canvas, int x, int y, int radius, uint32_t color);
 
    /*
     * ChDrawCapsule -- draw a capsule shaped rectangle
     * @param canv -- Pointer to canvas
     * @param x -- X location relative to window
     * @param y -- Y location relative to window
     * @param width -- Width of the capsule
     * @param height -- Height of the capsule
     * @param color -- fill color of the capsule
     */
    XE_LIB void ChDrawCapsule(ChCanvas * canv, int x, int y, int width, int height, uint32_t color);
 
    XE_LIB void ChDrawRoundedRect(ChCanvas * canv,
                                  int x,
                                  int y,
                                  int width,
                                  int height,
                                  uint32_t color,
                                  int topleftRadius,
                                  int topRightRadius,
                                  int bottomRightRadius,
                                  int bottomLeftRadius,
                                  ChRect* mask);
#ifdef __cplusplus
}
#endif
 
#endif