gp_text_style.h

// SPDX-License-Identifier: LGPL-2.1-or-later
/*
 * Copyright (C) 2009-2010 Jiri "BlueBear" Dluhos
 *                         <jiri.bluebear.dluhos@gmail.com>
 *
 * Copyright (C) 2009-2011 Cyril Hrubis <metan@ucw.cz>
 */
 
#ifndef TEXT_GP_TEXTSTYLE_H
#define TEXT_GP_TEXTSTYLE_H
 
#include <text/gp_font.h>
 
extern const gp_font_face gp_default_font;
 
/*
 * This structure describes how a text should be rendered.
 * It includes a font, and its various variants and transformations.
 */
typedef struct gp_text_style {
        const gp_font_face *font;
 
        /* Spacing between pixels (0 is the default, no spacing). */
        int pixel_xspace, pixel_yspace;
 
        /* Multiplier of pixel width/height (1 is default). */
        int pixel_xmul, pixel_ymul;
 
        /* Extra spacing (in pixels) between characters. */
        int char_xspace;
} gp_text_style;
 
#define GP_DEFAULT_TEXT_STYLE { \
        .font = &gp_default_font, \
        .pixel_xspace = 0, \
        .pixel_yspace = 0, \
        .pixel_xmul = 1, \
        .pixel_ymul = 1, \
        .char_xspace = 0 \
}
 
static inline void gp_text_style_normal(gp_text_style *style, const gp_font_face *font, int mul)
{
        style->pixel_xspace = 0;
        style->pixel_yspace = 0;
        style->pixel_xmul = mul;
        style->pixel_ymul = mul;
        style->font = font;
}
 
/*
 * Creates a bold variant of a bitmap font on the expense of slower rendering.
 */
static inline void gp_text_style_embold(gp_text_style *style, const gp_font_face *font, int mul)
{
        style->pixel_xspace = -1;
        style->pixel_yspace = -1;
        style->pixel_xmul = mul + 1;
        style->pixel_ymul = mul + 1;
        style->font = font;
}
 
#endif /* TEXT_GP_TEXTSTYLE_H */