/* Copyright 2020 Jaakko Keränen Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "paint.h" #include iLocalDef SDL_Renderer *renderer_Paint_(const iPaint *d) { iAssert(d->dst); return d->dst->render; } static void setColor_Paint_(const iPaint *d, int color) { const iColor clr = get_Color(color & mask_ColorId); SDL_SetRenderDrawColor(renderer_Paint_(d), clr.r, clr.g, clr.b, clr.a * d->alpha / 255); } void init_Paint(iPaint *d) { d->dst = get_Window(); d->setTarget = NULL; d->oldTarget = NULL; d->alpha = 255; } void beginTarget_Paint(iPaint *d, SDL_Texture *target) { SDL_Renderer *rend = renderer_Paint_(d); if (!d->setTarget) { d->oldTarget = SDL_GetRenderTarget(rend); SDL_SetRenderTarget(rend, target); d->setTarget = target; } else { iAssert(d->setTarget == target); } } void endTarget_Paint(iPaint *d) { if (d->setTarget) { SDL_SetRenderTarget(renderer_Paint_(d), d->oldTarget); d->oldTarget = NULL; d->setTarget = NULL; } } void setClip_Paint(iPaint *d, iRect rect) { rect = intersect_Rect(rect, rect_Root(get_Root())); if (isEmpty_Rect(rect)) { rect = init_Rect(0, 0, 1, 1); } SDL_RenderSetClipRect(renderer_Paint_(d), (const SDL_Rect *) &rect); } void unsetClip_Paint(iPaint *d) { if (numRoots_Window(get_Window()) > 1) { const iRect rect = rect_Root(get_Root()); SDL_RenderSetClipRect(renderer_Paint_(d), (const SDL_Rect *) &rect); return; } #if SDL_VERSION_ATLEAST(2, 0, 12) SDL_RenderSetClipRect(renderer_Paint_(d), NULL); #else const iRect rect = current_Root() ? rect_Root(get_Root()) : (iRect){ zero_I2(), get_Window()->size }; SDL_RenderSetClipRect(renderer_Paint_(d), (const SDL_Rect *) &rect); #endif } void drawRect_Paint(const iPaint *d, iRect rect, int color) { iInt2 br = bottomRight_Rect(rect); /* Keep the right/bottom edge visible in the window. */ if (br.x == d->dst->size.x) br.x--; if (br.y == d->dst->size.y) br.y--; const SDL_Point edges[] = { { left_Rect(rect), top_Rect(rect) }, { br.x, top_Rect(rect) }, { br.x, br.y }, #if SDL_VERSION_ATLEAST(2, 0, 16) && defined (iPlatformApple) { left_Rect(rect), br.y - 1 }, /* regression in SDL 2.0.16? */ #else { left_Rect(rect), br.y }, #endif { left_Rect(rect), top_Rect(rect) } }; setColor_Paint_(d, color); SDL_RenderDrawLines(renderer_Paint_(d), edges, iElemCount(edges)); } void drawRectThickness_Paint(const iPaint *d, iRect rect, int thickness, int color) { thickness = iClamp(thickness, 1, 4); while (thickness--) { drawRect_Paint(d, rect, color); shrink_Rect(&rect, one_I2()); } } void fillRect_Paint(const iPaint *d, iRect rect, int color) { setColor_Paint_(d, color); SDL_RenderFillRect(renderer_Paint_(d), (SDL_Rect *) &rect); } void drawSoftShadow_Paint(const iPaint *d, iRect inner, int thickness, int color, int alpha) { SDL_Renderer *render = renderer_Paint_(d); SDL_Texture *shadow = get_Window()->borderShadow; const iInt2 size = size_SDLTexture(shadow); const iRect outer = expanded_Rect(inner, init1_I2(thickness)); const iColor clr = get_Color(color); SDL_SetTextureColorMod(shadow, clr.r, clr.g, clr.b); SDL_SetTextureAlphaMod(shadow, alpha); /* Classic stretched segmented border. */ SDL_RenderCopy(render, shadow, &(SDL_Rect){ 0, 0, size.x / 2, size.y / 2}, &(SDL_Rect){ outer.pos.x, outer.pos.y, thickness, thickness }); SDL_RenderCopy(render, shadow, &(SDL_Rect){ size.x / 2, 0, 1, size.y / 2}, &(SDL_Rect){ inner.pos.x, outer.pos.y, inner.size.x, thickness }); SDL_RenderCopy(render, shadow, &(SDL_Rect){ size.x / 2, 0, size.x / 2, size.y / 2}, &(SDL_Rect){ right_Rect(outer) - thickness, outer.pos.y, thickness, thickness }); SDL_RenderCopy(render, shadow, &(SDL_Rect){ size.x / 2, size.y / 2, size.x / 2, 1 }, &(SDL_Rect){ right_Rect(inner), inner.pos.y, thickness, inner.size.y }); SDL_RenderCopy(render, shadow, &(SDL_Rect){ size.x / 2, size.y / 2, size.x / 2, size.y / 2}, &(SDL_Rect){ right_Rect(inner), bottom_Rect(inner), thickness, thickness }); SDL_RenderCopy(render, shadow, &(SDL_Rect){ size.x / 2, size.y / 2, 1, size.y / 2}, &(SDL_Rect){ inner.pos.x, bottom_Rect(inner), inner.size.x, thickness }); SDL_RenderCopy(render, shadow, &(SDL_Rect){ 0, size.y / 2, size.x / 2, size.y / 2}, &(SDL_Rect){ outer.pos.x, bottom_Rect(inner), thickness, thickness }); SDL_RenderCopy(render, shadow, &(SDL_Rect){ 0, size.y / 2, size.x / 2, 1 }, &(SDL_Rect){ outer.pos.x, inner.pos.y, thickness, inner.size.y }); } void drawLines_Paint(const iPaint *d, const iInt2 *points, size_t count, int color) { setColor_Paint_(d, color); SDL_RenderDrawLines(renderer_Paint_(d), (const SDL_Point *) points, count); } iInt2 size_SDLTexture(SDL_Texture *d) { iInt2 size; SDL_QueryTexture(d, NULL, NULL, &size.x, &size.y); return size; }