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Fixed text alignment to be visible based rather than surface based

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nedko
2025-12-08 17:16:46 +02:00
parent 8e88adf1df
commit 9f8a037f69
3 changed files with 87 additions and 9 deletions
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24
sdl_helpers.cpp
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@@ -77,42 +77,52 @@ TTF_Font* get_font(int size, const string& filename)
}
SDL_Rect surface_align(const SDL_Surface* base, const SDL_Surface* applied,
HorizontalAlign halign, VerticalAlign valign)
HorizontalAlign halign, VerticalAlign valign, const SDL_Rect* hint_external)
{
SDL_Rect align = {.x = 0, .y = 0, .w = 0, .h = 0};
SDL_Rect hint;
if ((nullptr == base) || (nullptr == applied))
{
return align;
}
if (nullptr == hint_external)
{
hint = SDL_Rect{.x = 0, .y = 0, .w = applied->w, .h = applied->h};
}
else
{
hint = *hint_external;
}
switch (halign)
{
case HALIGN_LEFT:
align.x = 0;
align.x = -hint.x;
break;
case HALIGN_CENTER:
align.x = base->w / 2 - applied->w / 2;
align.x = base->w / 2 - hint.x - hint.w / 2;
break;
case HALIGN_RIGHT:
align.x = base->w - applied->w;
align.x = base->w - (hint.x + hint.w);
break;
}
switch (valign)
{
case VALIGN_TOP:
align.y = 0;
align.y = -hint.y;
break;
case VALIGN_CENTER:
align.y = base->h / 2 - applied->h / 2;
align.y = base->h / 2 - hint.y - hint.h / 2;
break;
case VALIGN_BOTTOM:
align.y = base->h - applied->h;
align.y = base->h - (hint.y + hint.h);
break;
}