93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
#include <SDL2/SDL_image.h>
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#include <gui/GuiTextureData.h>
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#include <gui/system/SDLSystem.h>
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#include <gui/system/libgui_log.h>
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GuiTextureData::GuiTextureData(const std::string& path) {
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SDL_Surface *surface = IMG_Load_RW(SDL_RWFromFile(path.c_str(), "rb"), 1);
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loadSurface(surface);
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}
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GuiTextureData::GuiTextureData(void *buffer, const uint32_t filesize, bool freesrc) {
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SDL_RWops *rw = SDL_RWFromMem(buffer, filesize);
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SDL_Surface *surface = IMG_Load_RW(rw, freesrc);
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loadSurface(surface);
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}
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GuiTextureData::GuiTextureData(SDL_Texture *texture) {
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if (this->texture) {
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SDL_DestroyTexture(this->texture);
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this->texture = nullptr;
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}
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this->texture = texture;
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int w, h;
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SDL_QueryTexture(this->texture, nullptr, nullptr, &w, &h);
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this->width = w;
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this->height = h;
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}
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void GuiTextureData::loadSurface(SDL_Surface *pSurface) {
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if(!pSurface){
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return;
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}
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cleanUp();
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imgSurface = pSurface;
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this->width = imgSurface->w;
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this->height = imgSurface->h;
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}
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void GuiTextureData::cleanUp() {
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if (imgSurface) {
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SDL_FreeSurface(imgSurface);
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imgSurface = nullptr;
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}
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if (texture) {
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SDL_DestroyTexture(texture);
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texture = nullptr;
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}
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}
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/**
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* Destructor for the GuiImage class.
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*/
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GuiTextureData::~GuiTextureData() {
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cleanUp();
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}
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void GuiTextureData::draw(Renderer *renderer, const SDL_Rect& dest, float angle) {
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if (texture == nullptr && imgSurface) {
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texture = SDL_CreateTextureFromSurface(renderer->getRenderer(), imgSurface);
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}
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if (!texture) {
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LG_Log("no texture!");
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return;
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}
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// copy the texture to the rendering context
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SDL_BlendMode mode;
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SDL_GetRenderDrawBlendMode(renderer->getRenderer(), &mode);
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// adjust blend mode
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if(blendMode != mode){
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SDL_SetRenderDrawBlendMode(renderer->getRenderer(), blendMode);
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}
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if (angle == 0) {
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SDL_RenderCopy(renderer->getRenderer(), texture, nullptr, &dest);
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} else {
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SDL_RenderCopyEx(renderer->getRenderer(), texture, nullptr, &dest, angle, nullptr, SDL_FLIP_NONE);
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}
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if(blendMode != mode){
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SDL_SetRenderDrawBlendMode(renderer->getRenderer(), mode);
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}
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}
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int GuiTextureData::setBlendMode(SDL_BlendMode blendMode) {
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this->blendMode = blendMode;
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if(texture){ return SDL_SetTextureBlendMode(texture, blendMode); }
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return SDL_BLENDMODE_INVALID;
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} |