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#include "draw-text.h"
#include "util.h"
static SDL_Rect
text_get_rect(
SDL_Renderer * const renderer,
TTF_Font * const font,
const text_style_t * const style,
const char * const buf
) {
// get renderer size
int renderer_w, renderer_h;
if (SDL_GetRendererOutputSize(renderer, &renderer_w, &renderer_h)) {
die("SDL_GetRendererOutputSize(): %s", SDL_GetError());
}
// get text size
int text_w, text_h;
if (TTF_SizeText(font, buf, &text_w, &text_h)) {
die("TTF_SizeText(): %s", TTF_GetError());
}
// build rect
switch (style->align) {
case TEXT_ALIGN_TOP_LEFT:
return (SDL_Rect) {
.x = style->pad.x,
.y = style->pad.y,
.w = text_w,
.h = text_h,
};
case TEXT_ALIGN_TOP_CENTER:
return (SDL_Rect) {
.x = (renderer_w - text_w) / 2 + style->pad.x,
.y = style->pad.y,
.w = text_w,
.h = text_h,
};
case TEXT_ALIGN_TOP_RIGHT:
return (SDL_Rect) {
.x = renderer_w - text_w - style->pad.x,
.y = style->pad.y,
.w = text_w,
.h = text_h,
};
case TEXT_ALIGN_CENTER_LEFT:
return (SDL_Rect) {
.x = style->pad.x,
.y = (renderer_h - text_h) / 2 + style->pad.y,
.w = text_w,
.h = text_h,
};
case TEXT_ALIGN_CENTER_CENTER:
return (SDL_Rect) {
.x = (renderer_w - text_w) / 2 + style->pad.x,
.y = (renderer_h - text_h) / 2 + style->pad.y,
.w = text_w,
.h = text_h,
};
case TEXT_ALIGN_CENTER_RIGHT:
return (SDL_Rect) {
.x = renderer_w - text_w - style->pad.x,
.y = (renderer_h - text_h) / 2 + style->pad.y,
.w = text_w,
.h = text_h,
};
case TEXT_ALIGN_BOTTOM_LEFT:
return (SDL_Rect) {
.x = style->pad.x,
.y = renderer_h - text_h - style->pad.y,
.w = text_w,
.h = text_h,
};
case TEXT_ALIGN_BOTTOM_CENTER:
return (SDL_Rect) {
.x = (renderer_w - text_w) / 2 + style->pad.x,
.y = renderer_h - text_h - style->pad.y,
.w = text_w,
.h = text_h,
};
case TEXT_ALIGN_BOTTOM_RIGHT:
return (SDL_Rect) {
.x = renderer_w - text_w - style->pad.x,
.y = renderer_h - text_h - style->pad.y,
.w = text_w,
.h = text_h,
};
default:
return (SDL_Rect) {
.x = style->pad.x,
.y = style->pad.y,
.w = text_w,
.h = text_h,
};
}
}
void
draw_text(
SDL_Renderer * const renderer,
TTF_Font * const font,
const text_style_t * const style,
const char * const buf
) {
// get rect
const SDL_Rect rect = text_get_rect(renderer, font, style, buf);
// create surface, check for error
SDL_Surface *surface = TTF_RenderText_Shaded(font, buf, style->colors[0], style->colors[1]);
if (!surface) {
die("TTF_RenderText_Blended(): %s", TTF_GetError());
}
// create texture, check for error
SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer, surface);
if (!texture) {
die("SDL_CreateTextureFromSurface(): %s", SDL_GetError());
}
// free surface
SDL_FreeSurface(surface);
// render text
if (SDL_RenderCopy(renderer, texture, NULL, &rect)) {
die("SDL_RenderCopy(): %s", SDL_GetError());
}
// free texture
SDL_DestroyTexture(texture);
}
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