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Video: expand render_copy to take flip arguments

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Still needs to handle rotation.
This commit is contained in:
Charles Dang 2017-06-13 02:53:43 +11:00
parent 6fdf1bcc88
commit 6fbc2491ea
2 changed files with 34 additions and 4 deletions
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32
src/video.cpp
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@ -345,11 +345,37 @@ void CVideo::render_screen()
}
}
void CVideo::render_copy(const texture& txt, SDL_Rect* src_rect, SDL_Rect* dst_rect)
void CVideo::render_copy(
const texture& txt, SDL_Rect* src_rect, SDL_Rect* dst_rect, const bool flip_h, const bool flip_v)
{
if(window) {
SDL_RenderCopy(*window, txt, src_rect, dst_rect);;
if(!window) {
return;
}
// If no additional data was provided, render immediately.
if(!flip_h && !flip_v) {
SDL_RenderCopy(*window, txt, src_rect, dst_rect);
return;
}
// Calculate flipping mode.
int fmode = SDL_FLIP_NONE;
if(flip_h && flip_v) {
fmode = SDL_FLIP_HORIZONTAL | SDL_FLIP_VERTICAL;
} else if(flip_h) {
fmode = SDL_FLIP_HORIZONTAL;
} else if(flip_v) {
fmode = SDL_FLIP_VERTICAL;
}
SDL_RendererFlip flip_mode = static_cast<SDL_RendererFlip>(fmode);
// TODO: add handling of rotations.
static const double rotate_angle = 0;
static const SDL_Point* center = nullptr;
SDL_RenderCopyEx(*window, txt, src_rect, dst_rect, rotate_angle, center, flip_mode);
}
void CVideo::lock_updates(bool value)

6
src/video.hpp
View file

@ -173,7 +173,11 @@ public:
/** Renders the screen. Should normally not be called directly! */
void render_screen();
void render_copy(const texture& txt, SDL_Rect* src_rect = nullptr, SDL_Rect* dst_rect = nullptr);
void render_copy(const texture& txt,
SDL_Rect* src_rect = nullptr,
SDL_Rect* dst_rect = nullptr,
const bool flip_h = false,
const bool flip_v = false);
/**
* Updates and ensures the framebuffer surface is valid.