SDL2_Playground/src/gui/GuiText.cpp

90 lines
2.6 KiB
C++

/****************************************************************************
* Copyright (C) 2015 Dimok
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
****************************************************************************/
#include <cstdarg>
#include <SDl2/SDL_surface.h>
#include "GuiText.h"
#include "../CVideo.h"
#include "../logger.h"
/**
* Constructor for the GuiText class.
*/
GuiText::GuiText(const std::string& text, int32_t s, SDL_Color c, TTF_Font* gFont) {
//Render text surface
textSurface = TTF_RenderText_Solid( gFont, text.c_str(), c );
if( textSurface == NULL ) {
DEBUG_FUNCTION_LINE( "Unable to render text surface! SDL_ttf Error: %s\n", TTF_GetError() );
}
}
GuiText::~GuiText(){
if(textSurface){
SDL_FreeSurface( textSurface );
textSurface = nullptr;
}
if(textTexture){
SDL_DestroyTexture( textTexture );
textTexture = nullptr;
}
}
/**
* Draw the text on screen
*/
void GuiText::draw(CVideo *pVideo) {
if (!this->isVisible()) {
return;
}
if(textTexture == NULL){
//Create texture from surface pixels
textTexture = SDL_CreateTextureFromSurface( pVideo->getRenderer(), textSurface );
if( textTexture == NULL ) {
DEBUG_FUNCTION_LINE( "Unable to create texture from rendered text! SDL Error: %s\n", SDL_GetError() );
}else{
width = textSurface->w;
height = textSurface->h;
}
if(textSurface){
SDL_FreeSurface( textSurface );
textSurface = nullptr;
}
}
if(!textTexture){
return;
}
SDL_Rect rect;
rect.x = getLeft();
rect.y = getTop();
rect.w = getScaleX() * getWidth();
rect.h = getScaleY() * getHeight();
// copy the texture to the rendering context
if(getAngle() == 0){
SDL_RenderCopy(pVideo->getRenderer(), textTexture, NULL, &rect);
}else{
SDL_RenderCopyEx(pVideo->getRenderer(), textTexture, NULL, &rect, getAngle(), NULL, SDL_FLIP_NONE);
}
}