libgui-sdl/source/gui/GuiImage.cpp

85 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 <SDL2/SDL_image.h>
#include <gui/GuiImage.h>
#include <gui/system/libgui_log.h>
GuiImage::GuiImage(GuiTextureData *texture) {
setTexture(texture);
}
GuiImage::GuiImage(SDL_Color color, float width, float height) {
this->color = color;
this->setSize(width, height);
}
GuiImage::~GuiImage() {
if (this->texture && freeTextureData) {
delete this->texture;
}
}
void GuiImage::draw(Renderer *renderer) {
if (!this->isVisible()) {
return;
}
SDL_Rect rect;
rect.x = (int) getLeft();
rect.y = (int) getTop();
rect.w = (int) (getScaleX() * getWidth());
rect.h = (int) (getScaleY() * getHeight());
if (texture) {
texture->draw(renderer, rect, getAngle());
} else {
// copy the texture to the rendering context
SDL_BlendMode mode;
SDL_GetRenderDrawBlendMode(renderer->getRenderer(), &mode);
// adjust blend mode
if(blendMode != mode){
SDL_SetRenderDrawBlendMode(renderer->getRenderer(), blendMode);
}
SDL_SetRenderDrawColor(renderer->getRenderer(), color.r, color.g, color.b, color.a);
SDL_RenderFillRect(renderer->getRenderer(), &rect);
if(getAngle() != 0.0f){
LG_Log("Drawing a rotated rect is not supported yet");
}
if(blendMode != mode){
SDL_SetRenderDrawBlendMode(renderer->getRenderer(), mode);
}
}
}
void GuiImage::setTexture(GuiTextureData *tex) {
if (tex) {
if(this->texture && freeTextureData){
delete this->texture;
}
this->texture = tex;
this->setSize(tex->getWidth(), tex->getHeight());
}
}
int GuiImage::setBlendMode(SDL_BlendMode blendMode) {
this->blendMode = blendMode;
return this->texture ? this->texture->setBlendMode(blendMode) : 0;
}