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Render.cpp
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Render.cpp
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#include <SDL_render.h>
#include <SDL_ttf.h>
#include <iostream>
#include "Globals.h"
#include "Render.h"
namespace {
const char* NO_TEXT = " ";
}
TexturePtr checkAndConvert(SDL_Renderer& renderer, SurfacePtr surface, const char* text) {
if (!surface) {
std::cerr << "Fatal error! Failed to render text \"" << text << "\" to texture! Error:"
<< TTF_GetError()
<< std::endl;
std::terminate();
}
TexturePtr ret = TexturePtr(SDL_CreateTextureFromSurface(&renderer, surface.get()));
if (!ret) {
std::cerr << "Fatal error! Failed to create texture from surface! (" << text << "):"
<< SDL_GetError()
<< std::endl;
std::terminate();
}
return ret;
}
TexturePtr textureFromText(SDL_Renderer &renderer,TTF_Font& font,const char *text,SDL_Color color) {
if (!text || !*text) {
// Make sure we return a texture even if there is no text provided.
text = NO_TEXT;
}
return checkAndConvert(renderer,SurfacePtr(TTF_RenderUTF8_Blended(&font, text, color)),text);
}
TexturePtr titleTextureFromText(SDL_Renderer& renderer, const char* text, SDL_Color color, int width) {
if (!text || !*text) {
// Make sure we return a texture even if there is no text provided.
text = NO_TEXT;
}
int w;
TTF_SizeUTF8(fontTitle, text, &w, NULL);
if (w <= width) {
return textureFromText(renderer, *fontTitle, text, color);
}
TTF_SizeUTF8(fontGUI, text, &w, NULL);
if (w <= width) {
return textureFromText(renderer, *fontGUI, text, color);
}
return textureFromText(renderer, *fontGUISmall, text, color);
}
TexturePtr textureFromTextShaded(SDL_Renderer &renderer,TTF_Font &font,const char *text,SDL_Color fg,SDL_Color bg) {
if (!text || !*text) {
text = NO_TEXT;
}
return checkAndConvert(renderer,SurfacePtr(TTF_RenderUTF8_Shaded(&font, text, fg,bg)),text);
}
void applyTexture(int x, int y, SDL_Texture &texture, SDL_Renderer & renderer, const SDL_Rect *clip) {
if (clip) {
const SDL_Rect dstRect = { x, y, clip->w, clip->h };
SDL_RenderCopy(&renderer, &texture, clip, &dstRect);
} else {
//Get width/height from the texture.
const SDL_Rect dstRect = rectFromTexture(x, y, texture);
SDL_RenderCopy(&renderer, &texture, clip, &dstRect);
}
}
SurfacePtr createSurface(int width, int height) {
return SurfacePtr(SDL_CreateRGBSurface(0, width, height, SCREEN_BPP, RMASK, GMASK, BMASK, AMASK));
}
void drawTitleTexture(int screenWidth, SDL_Texture &texture, SDL_Renderer &renderer) {
SDL_Rect dstRect = rectFromTexture(0,40-TITLE_FONT_RAISE, texture);
dstRect.x = (screenWidth - dstRect.w) / 2;
SDL_RenderCopy(&renderer, &texture, NULL, &dstRect);
}

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Render.cpp (2 KB)

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