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eda-tools/eeshow/gfx/cro.h
Werner Almesberger 3b76b058fd eeshow/gfx/: don't overthink coordinate transforms
The xe/ye element was completely unnecessary because we never have an
offset at the pixel level. Furthermore, it was used incorrectly, causing
a shift between old and new when xmin/ymin differed.
2016-08-20 15:05:34 -03:00

50 lines
1.3 KiB
C

/*
* gfx/cro.h - Cairo graphics back-end
*
* Written 2016 by Werner Almesberger
* Copyright 2016 by Werner Almesberger
*
* 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.
*/
#ifndef GFX_CRO_H
#define GFX_CRO_H
#include <stdint.h>
#include <cairo/cairo.h>
#include "gfx/gfx.h"
struct cro_ctx;
extern const struct gfx_ops cro_png_ops;
extern const struct gfx_ops cro_pdf_ops;
#define cro_img_ops cro_png_ops /* just don't call cro_img_ops.end */
#define cro_canvas_ops cro_png_ops /* just don't call cro_canvas_ops.end */
void cro_color_override(struct cro_ctx *cc, int color);
void cro_get_size(const struct cro_ctx *cc, int *w, int *h, int *x, int *y);
uint32_t *cro_img_end(struct cro_ctx *cc, int *w, int *h, int *stride);
void cro_img_write(struct cro_ctx *cc, const char *name);
void cro_canvas_end(struct cro_ctx *cc, int *w, int *h, int *xmin, int *ymin);
void cro_canvas_prepare(cairo_t *cr);
void cro_canvas_draw(struct cro_ctx *cc, cairo_t *cr,
int x, int y, float scale);
uint32_t *cro_img(struct cro_ctx *ctx, int x0, int yo, int w, int h,
float scale, cairo_t **res_cr, int *res_stride);
#endif /* !GFX_CRO_H */