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/*
* CursorSoftware.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#include "StdInc.h"
#include "CursorSoftware.h"
#include "../gui/CGuiHandler.h"
#include "../render/IScreenHandler.h"
#include "../render/Colors.h"
#include "../render/IImage.h"
#include "../CMT.h"
#include "SDL_Extensions.h"
#include <SDL_render.h>
#include <SDL_events.h>
void CursorSoftware::render()
{
//texture must be updated in the main (renderer) thread, but changes to cursor type may come from other threads
if (needUpdate)
updateTexture();
Point renderPos = pos - pivot;
SDL_Rect destRect;
destRect.x = renderPos.x;
destRect.y = renderPos.y;
destRect.w = cursorSurface->w;
destRect.h = cursorSurface->h;
SDL_RenderCopy(mainRenderer, cursorTexture, nullptr, &destRect);
}
void CursorSoftware::createTexture(const Point & dimensions)
{
if(cursorTexture)
SDL_DestroyTexture(cursorTexture);
if (cursorSurface)
SDL_FreeSurface(cursorSurface);
cursorSurface = CSDL_Ext::newSurface(dimensions);
cursorTexture = SDL_CreateTexture(mainRenderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, dimensions.x, dimensions.y);
SDL_SetSurfaceBlendMode(cursorSurface, SDL_BLENDMODE_NONE);
SDL_SetTextureBlendMode(cursorTexture, SDL_BLENDMODE_BLEND);
}
void CursorSoftware::updateTexture()
{
if (!cursorSurface)
createTexture(cursorImage->dimensions() * GH.screenHandler().getScalingFactor());
Point currentSize = Point(cursorSurface->w, cursorSurface->h);
if (currentSize != cursorImage->dimensions() * GH.screenHandler().getScalingFactor())
createTexture(cursorImage->dimensions() * GH.screenHandler().getScalingFactor());
CSDL_Ext::fillSurface(cursorSurface, CSDL_Ext::toSDL(Colors::TRANSPARENCY));
cursorImage->draw(cursorSurface, Point(0,0), nullptr, GH.screenHandler().getScalingFactor());
SDL_UpdateTexture(cursorTexture, nullptr, cursorSurface->pixels, cursorSurface->pitch);
needUpdate = false;
}
void CursorSoftware::setImage(std::shared_ptr<IImage> image, const Point & pivotOffset)
{
assert(image != nullptr);
cursorImage = image;
pivot = pivotOffset;
needUpdate = true;
}
void CursorSoftware::setCursorPosition( const Point & newPos )
{
pos = newPos;
}
void CursorSoftware::setVisible(bool on)
{
visible = on;
}
CursorSoftware::CursorSoftware():
cursorTexture(nullptr),
cursorSurface(nullptr),
needUpdate(false),
visible(false),
pivot(0,0)
{
SDL_ShowCursor(SDL_DISABLE);
}
CursorSoftware::~CursorSoftware()
{
if(cursorTexture)
SDL_DestroyTexture(cursorTexture);
if (cursorSurface)
SDL_FreeSurface(cursorSurface);
}
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