mirror of
https://github.com/libSDL2pp/libSDL2pp.git
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93a77542d8
- Add self-assignment checks - Free resources of object which is going to be replaced to avoid resource leaks
134 lines
3.7 KiB
C++
134 lines
3.7 KiB
C++
/*
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libSDL2pp - C++ wrapper for libSDL2
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Copyright (C) 2013 Dmitry Marakasov <amdmi3@amdmi3.ru>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include <utility>
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#include <SDL2pp/Config.hh>
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#include <SDL2/SDL_render.h>
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#ifdef SDL2PP_WITH_IMAGE
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# include <SDL2/SDL_image.h>
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#endif
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#include <SDL2pp/Texture.hh>
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#include <SDL2pp/Config.hh>
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#include <SDL2pp/Renderer.hh>
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#include <SDL2pp/Exception.hh>
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#include <SDL2pp/Rect.hh>
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#ifdef SDL2PP_WITH_IMAGE
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# include <SDL2pp/RWops.hh>
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#endif
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namespace SDL2pp {
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Texture::Texture(Renderer& renderer, Uint32 format, int access, int w, int h) {
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if ((texture_ = SDL_CreateTexture(renderer.Get(), format, access, w, h)) == nullptr)
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throw Exception("SDL_CreateTexture failed");
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}
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#ifdef SDL2PP_WITH_IMAGE
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Texture::Texture(Renderer& renderer, RWops& rwops) {
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texture_ = IMG_LoadTexture_RW(renderer.Get(), rwops.Get(), 0);
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}
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Texture::Texture(Renderer& renderer, const std::string& path) {
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RWops rwops = RWops::FromFile(path);
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texture_ = IMG_LoadTexture_RW(renderer.Get(), rwops.Get(), 0);
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}
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#endif
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Texture::~Texture() {
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if (texture_ != nullptr)
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SDL_DestroyTexture(texture_);
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}
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Texture::Texture(Texture&& other) noexcept : texture_(other.texture_) {
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other.texture_ = nullptr;
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}
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Texture& Texture::operator=(Texture&& other) noexcept {
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if (&other == this)
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return *this;
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if (texture_ != nullptr)
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SDL_DestroyTexture(texture_);
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texture_ = other.texture_;
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other.texture_ = nullptr;
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return *this;
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}
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SDL_Texture* Texture::Get() const {
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return texture_;
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}
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void Texture::Update(const Rect& rect, const void* pixels, int pitch) {
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if (SDL_UpdateTexture(texture_, rect.Get(), pixels, pitch) != 0)
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throw Exception("SDL_UpdateTexture failed");
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}
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void Texture::SetBlendMode(SDL_BlendMode blendMode) {
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if (SDL_SetTextureBlendMode(texture_, blendMode) != 0)
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throw Exception("SDL_SetTextureBlendMode failed");
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}
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void Texture::SetAlphaMod(Uint8 alpha) {
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if (SDL_SetTextureAlphaMod(texture_, alpha) != 0)
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throw Exception("SDL_SetTextureAlphaMod failed");
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}
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void Texture::SetColorMod(Uint8 r, Uint8 g, Uint8 b) {
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if (SDL_SetTextureColorMod(texture_, r, g, b) != 0)
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throw Exception("SDL_SetTextureColorMod failed");
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}
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Texture::LockHandle Texture::Lock(const Rect& rect) {
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return LockHandle(this, rect);
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}
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Uint32 Texture::GetFormat() const {
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Uint32 format;
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if (SDL_QueryTexture(texture_, &format, nullptr, nullptr, nullptr) != 0)
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throw Exception("SDL_QueryTexture failed");
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return format;
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}
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int Texture::GetAccess() const {
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int access;
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if (SDL_QueryTexture(texture_, nullptr, &access, nullptr, nullptr) != 0)
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throw Exception("SDL_QueryTexture failed");
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return access;
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}
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int Texture::GetWidth() const {
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int w;
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if (SDL_QueryTexture(texture_, nullptr, nullptr, &w, nullptr) != 0)
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throw Exception("SDL_QueryTexture failed");
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return w;
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}
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int Texture::GetHeight() const {
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int h;
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if (SDL_QueryTexture(texture_, nullptr, nullptr, nullptr, &h) != 0)
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throw Exception("SDL_QueryTexture failed");
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return h;
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}
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}
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