mirror of
https://github.com/vcmi/vcmi.git
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129 lines
4.3 KiB
C++
129 lines
4.3 KiB
C++
/*
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* Canvas.cpp, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#include "StdInc.h"
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#include "Canvas.h"
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#include "../renderSDL/SDL_Extensions.h"
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#include "IImage.h"
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#include "Graphics.h"
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#include <SDL_surface.h>
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Canvas::Canvas(SDL_Surface * surface):
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surface(surface),
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renderOffset(0,0)
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{
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surface->refcount++;
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}
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Canvas::Canvas(const Canvas & other):
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surface(other.surface),
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renderOffset(other.renderOffset)
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{
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surface->refcount++;
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}
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Canvas::Canvas(const Canvas & other, const Rect & newClipRect):
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Canvas(other)
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{
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clipRect.emplace();
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CSDL_Ext::getClipRect(surface, clipRect.get());
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Rect currClipRect = newClipRect + renderOffset;
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CSDL_Ext::setClipRect(surface, currClipRect);
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renderOffset += newClipRect.topLeft();
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}
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Canvas::Canvas(const Point & size):
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renderOffset(0,0),
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surface(CSDL_Ext::newSurface(size.x, size.y))
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{
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}
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Canvas::~Canvas()
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{
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if (clipRect)
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CSDL_Ext::setClipRect(surface, clipRect.get());
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SDL_FreeSurface(surface);
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}
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void Canvas::draw(std::shared_ptr<IImage> image, const Point & pos)
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{
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assert(image);
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if (image)
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image->draw(surface, renderOffset.x + pos.x, renderOffset.y + pos.y);
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}
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void Canvas::draw(std::shared_ptr<IImage> image, const Point & pos, const Rect & sourceRect)
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{
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assert(image);
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if (image)
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image->draw(surface, renderOffset.x + pos.x, renderOffset.y + pos.y, &sourceRect);
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}
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void Canvas::draw(Canvas & image, const Point & pos)
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{
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CSDL_Ext::blitAt(image.surface, renderOffset.x + pos.x, renderOffset.y + pos.y, surface);
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}
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void Canvas::draw(Canvas & image, const Point & pos, const Point & targetSize)
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{
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SDL_Rect targetRect = CSDL_Ext::toSDL(Rect(pos, targetSize));
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SDL_BlitScaled(image.surface, nullptr, surface, &targetRect );
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}
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void Canvas::drawPoint(const Point & dest, const ColorRGBA & color)
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{
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CSDL_Ext::putPixelWithoutRefreshIfInSurf(surface, dest.x, dest.y, color.r, color.g, color.b, color.a);
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}
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void Canvas::drawLine(const Point & from, const Point & dest, const ColorRGBA & colorFrom, const ColorRGBA & colorDest)
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{
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CSDL_Ext::drawLine(surface, renderOffset + from, renderOffset + dest, CSDL_Ext::toSDL(colorFrom), CSDL_Ext::toSDL(colorDest));
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}
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void Canvas::drawLineDashed(const Point & from, const Point & dest, const ColorRGBA & color)
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{
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CSDL_Ext::drawLineDashed(surface, renderOffset + from, renderOffset + dest, CSDL_Ext::toSDL(color));
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}
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void Canvas::drawBorderDashed(const Rect & target, const ColorRGBA & color)
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{
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Rect realTarget = target + renderOffset;
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CSDL_Ext::drawLineDashed(surface, realTarget.topLeft(), realTarget.topRight(), CSDL_Ext::toSDL(color));
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CSDL_Ext::drawLineDashed(surface, realTarget.bottomLeft(), realTarget.bottomRight(), CSDL_Ext::toSDL(color));
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CSDL_Ext::drawLineDashed(surface, realTarget.topLeft(), realTarget.bottomLeft(), CSDL_Ext::toSDL(color));
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CSDL_Ext::drawLineDashed(surface, realTarget.topRight(), realTarget.bottomRight(), CSDL_Ext::toSDL(color));
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}
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void Canvas::drawText(const Point & position, const EFonts & font, const SDL_Color & colorDest, ETextAlignment alignment, const std::string & text )
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{
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switch (alignment)
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{
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case ETextAlignment::TOPLEFT: return graphics->fonts[font]->renderTextLeft (surface, text, colorDest, renderOffset + position);
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case ETextAlignment::CENTER: return graphics->fonts[font]->renderTextCenter(surface, text, colorDest, renderOffset + position);
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case ETextAlignment::BOTTOMRIGHT: return graphics->fonts[font]->renderTextRight (surface, text, colorDest, renderOffset + position);
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}
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}
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void Canvas::drawText(const Point & position, const EFonts & font, const SDL_Color & colorDest, ETextAlignment alignment, const std::vector<std::string> & text )
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{
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switch (alignment)
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{
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case ETextAlignment::TOPLEFT: return graphics->fonts[font]->renderTextLinesLeft (surface, text, colorDest, renderOffset + position);
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case ETextAlignment::CENTER: return graphics->fonts[font]->renderTextLinesCenter(surface, text, colorDest, renderOffset + position);
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case ETextAlignment::BOTTOMRIGHT: return graphics->fonts[font]->renderTextLinesRight (surface, text, colorDest, renderOffset + position);
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}
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}
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