Page MenuHomePhabricator (Chris)
Files F621938

Render.cpp
No OneTemporary
Actions

Authored By
Unknown
Size
3 KB
Referenced Files
None
Subscribers
None

Render.cpp
View Options

#include <SDL_render.h>
#include <SDL_ttf_fontfallback.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 textureFromMultilineText(SDL_Renderer& renderer, TTF_Font& font, const std::vector<std::string>& text, SDL_Color color, int gravity) {
std::vector<SDL_Surface*> surfaces;
int w = 1, h = 0;
for (const std::string& s : text) {
auto surface = TTF_RenderUTF8_Blended(&font, s.empty() ? " " : s.c_str(), color);
if (surface->w > w) w = surface->w;
h += surface->h;
surfaces.push_back(surface);
}
if (h < 1) h = 1;
SurfacePtr out = createSurface(w, h);
int y = 0;
for (auto surface : surfaces) {
SDL_Rect r = { 0, y, surface->w, surface->h };
y += surface->h;
if (gravity == 1) { // GUIGravityCenter
r.x = (w - r.w) / 2;
} else if (gravity == 2) { // GUIGravityRight
r.x = w - r.w;
}
SDL_BlitSurface(surface, NULL, out.get(), &r);
SDL_FreeSurface(surface);
}
return TexturePtr(SDL_CreateTextureFromSurface(&renderer, out.get()));
}
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);
}

File Metadata

Mime Type
text/x-c
Expires
Sat, Nov 14, 7:39 PM (20 h, 51 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
112550
Default Alt Text
Render.cpp (3 KB)

Event Timeline