From 645250e1cd8ce9bc1faea599df7a1b05836bfeb8 Mon Sep 17 00:00:00 2001 From: Bent Bisballe Nyeng Date: Tue, 29 Dec 2020 16:09:43 +0100 Subject: Split UI code into application/plugin UI and UI library. --- plugingui/painter.cc | 644 --------------------------------------------------- 1 file changed, 644 deletions(-) delete mode 100644 plugingui/painter.cc (limited to 'plugingui/painter.cc') diff --git a/plugingui/painter.cc b/plugingui/painter.cc deleted file mode 100644 index f746f83..0000000 --- a/plugingui/painter.cc +++ /dev/null @@ -1,644 +0,0 @@ -/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/*************************************************************************** - * painter.cc - * - * Wed Oct 12 19:48:45 CEST 2011 - * Copyright 2011 Bent Bisballe Nyeng - * deva@aasimon.org - ****************************************************************************/ - -/* - * This file is part of DrumGizmo. - * - * DrumGizmo is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published by - * the Free Software Foundation; either version 3 of the License, or - * (at your option) any later version. - * - * DrumGizmo is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with DrumGizmo; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - */ -#include "painter.h" - -#include -#include - -#include "pixelbuffer.h" -#include "font.h" -#include "drawable.h" -#include "image.h" -#include "canvas.h" - -namespace GUI -{ - -Painter::Painter(Canvas& canvas) - : pixbuf(canvas.getPixelBuffer()) -{ - colour = Colour(0.0f, 0.0f, 0.0f, 0.5f); -} - -Painter::~Painter() -{ -} - -void Painter::setColour(const Colour& colour) -{ - this->colour = colour; -} - -static void plot(PixelBufferAlpha& pixbuf, const Colour& colour, - int x, int y, double c) -{ - if((x >= (int)pixbuf.width) || - (y >= (int)pixbuf.height) || - (x < 0) || - (y < 0)) - { - return; - } - - // plot the pixel at (x, y) with brightness c (where 0 ≤ c ≤ 1) - Colour col(colour); - if(c != 1) - { - col.data()[3] *= c; - } - pixbuf.addPixel(x, y, col); -} - -static inline double fpart(double x) -{ - return x - std::floor(x);// fractional part of x -} - -static inline double rfpart(double x) -{ - return 1 - fpart(x); // reverse fractional part of x -} - -void Painter::drawLine(int x0, int y0, int x1, int y1) -{ - bool steep = abs(y1 - y0) > abs(x1 - x0); - - if(steep) - { - std::swap(x0, y0); - std::swap(x1, y1); - } - if(x0 > x1) - { - std::swap(x0, x1); - std::swap(y0, y1); - } - - double dx = x1 - x0; - double dy = y1 - y0; - double gradient = dy / dx; - - // Handle first endpoint: - double xend = std::round(x0); - double yend = y0 + gradient * (xend - x0); - - double xpxl1 = xend; // this will be used in the main loop - double ypxl1 = std::floor(yend); - - if(steep) - { - pixbuf.addPixel(ypxl1, xpxl1, colour); - } - else - { - pixbuf.addPixel(xpxl1, ypxl1, colour); - } - - double intery = yend + gradient; // first y-intersection for the main loop - - // Handle second endpoint: - xend = std::round(x1); - yend = y1 + gradient * (xend - x1); - - double xpxl2 = xend; // this will be used in the main loop - double ypxl2 = std::floor(yend); - - if(steep) - { - pixbuf.addPixel(ypxl2, xpxl2, colour); - } - else - { - pixbuf.addPixel(xpxl2, ypxl2, colour); - } - - // main loop - for(int x = xpxl1 + 1; x <= xpxl2 - 1; ++x) - { - if(steep) - { - plot(pixbuf, colour, std::floor(intery) , x, rfpart(intery)); - plot(pixbuf, colour, std::floor(intery)+1, x, fpart(intery)); - } - else - { - plot(pixbuf, colour, x, std::floor(intery), rfpart(intery)); - plot(pixbuf, colour, x, std::floor(intery)+1, fpart(intery)); - } - intery += gradient; - } -} - -void Painter::drawRectangle(int x1, int y1, int x2, int y2) -{ - drawLine(x1, y1, x2 - 1, y1); - drawLine(x2, y1, x2, y2 - 1); - drawLine(x1 + 1, y2, x2, y2); - drawLine(x1, y1 + 1, x1, y2); -} - -void Painter::drawFilledRectangle(int x1, int y1, int x2, int y2) -{ - for(int y = y1; y <= y2; ++y) - { - drawLine(x1, y, x2, y); - } -} - -void Painter::clear() -{ - pixbuf.clear(); -} - -void Painter::drawText(int x0, int y0, const Font& font, - const std::string& text, bool nocolour, bool rotate) -{ - PixelBufferAlpha* textbuf = font.render(text); - - if(!rotate) - { - y0 -= textbuf->height; // The y0 offset (baseline) is the bottom of the text. - } - - // If the text offset is outside the buffer; skip it. - if((x0 > (int)pixbuf.width) || (y0 > (int)pixbuf.height)) - { - delete textbuf; - return; - } - - // Make sure we don't try to draw outside the pixbuf. - int renderWidth = textbuf->width; - if(renderWidth > (int)(pixbuf.width - x0)) - { - renderWidth = pixbuf.width - x0; - } - - int renderHeight = textbuf->height; - if(renderHeight > ((int)pixbuf.height - y0)) - { - renderHeight = ((int)pixbuf.height - y0); - } - - if(nocolour) - { - for(int y = -1 * std::min(0, y0); y < renderHeight; ++y) - { - int x = -1 * std::min(0, x0); - - assert(x >= 0); - assert(y >= 0); - assert(x < (int)textbuf->width); - assert(y < (int)textbuf->height); - - auto c = textbuf->getLine(x, y); - - assert(x + x0 >= 0); - assert(y + y0 >= 0); - assert(x + x0 < (int)pixbuf.width); - assert(y + y0 < (int)pixbuf.height); - - pixbuf.blendLine(x + x0, y + y0, c, renderWidth - x); - } - } - else if(rotate) - { - int renderWidth = textbuf->height; - if(renderWidth > (int)(pixbuf.width - x0)) - { - renderWidth = pixbuf.width - x0; - } - - int renderHeight = textbuf->width; - if(renderHeight > ((int)pixbuf.height - y0)) - { - renderHeight = ((int)pixbuf.height - y0); - } - - for(int y = -1 * std::min(0, y0); y < renderHeight; ++y) - { - for(int x = -1 * std::min(0, x0); x < renderWidth; ++x) - { - assert(x >= 0); - assert(y >= 0); - assert(x < (int)textbuf->height); - assert(y < (int)textbuf->width); - - auto c = textbuf->pixel(textbuf->width - y - 1, x); - - assert(x + x0 >= 0); - assert(y + y0 >= 0); - assert(x + x0 < (int)pixbuf.width); - assert(y + y0 < (int)pixbuf.height); - - Colour col(colour.red(), colour.green(), - colour.blue(), (int)(colour.alpha() * c.alpha()) / 255); - pixbuf.addPixel(x + x0, y + y0, col); - } - } - } - else - { - for(int y = -1 * std::min(0, y0); y < renderHeight; ++y) - { - for(int x = -1 * std::min(0, x0); x < renderWidth; ++x) - { - assert(x >= 0); - assert(y >= 0); - assert(x < (int)textbuf->width); - assert(y < (int)textbuf->height); - - auto c = textbuf->pixel(x, y); - - assert(x + x0 >= 0); - assert(y + y0 >= 0); - assert(x + x0 < (int)pixbuf.width); - assert(y + y0 < (int)pixbuf.height); - - Colour col(colour.red(), colour.green(), - colour.blue(), (int)(colour.alpha() * c.alpha()) / 255); - pixbuf.addPixel(x + x0, y + y0, col); - } - } - } - - delete textbuf; -} - -void Painter::drawPoint(int x, int y) -{ - if(x >= 0 && y >= 0 && (std::size_t)x < pixbuf.width && (std::size_t)y < pixbuf.height) - { - pixbuf.setPixel(x, y, colour); - } -} - -static void plot4points(Painter *p, int cx, int cy, int x, int y) -{ - p->drawPoint(cx + x, cy + y); - if(x != 0) - { - p->drawPoint(cx - x, cy + y); - } - - if(y != 0) - { - p->drawPoint(cx + x, cy - y); - } - - if(x != 0 && y != 0) - { - p->drawPoint(cx - x, cy - y); - } -} - -void Painter::drawCircle(int cx, int cy, double radius) -{ - int error = -radius; - int x = radius; - int y = 0; - - while(x >= y) - { - plot4points(this, cx, cy, x, y); - - if(x != y) - { - plot4points(this, cx, cy, y, x); - } - - error += y; - ++y; - error += y; - - if(error >= 0) - { - --x; - error -= x; - error -= x; - } - } -} - -static void plot4lines(Painter *p, int cx, int cy, int x, int y) -{ - p->drawLine(cx + x, cy + y, cx - x, cy + y); - if(x != 0) - { - p->drawLine(cx - x, cy + y, cx + x, cy + y); - } - - if(y != 0) - { - p->drawLine(cx + x, cy - y, cx - x, cy - y); - } - - if(x != 0 && y != 0) - { - p->drawLine(cx - x, cy - y, cx + x, cy - y); - } -} - -void Painter::drawFilledCircle(int cx, int cy, int radius) -{ - int error = -radius; - int x = radius; - int y = 0; - - while(x >= y) - { - plot4lines(this, cx, cy, x, y); - - if(x != y) - { - plot4lines(this, cx, cy, y, x); - } - - error += y; - ++y; - error += y; - - if(error >= 0) - { - --x; - error -= x; - error -= x; - } - } -} - -void Painter::drawImage(int x0, int y0, const Drawable& image) -{ - int fw = image.width(); - int fh = image.height(); - - // Make sure we don't try to draw outside the pixbuf. - if(fw > (int)(pixbuf.width - x0)) - { - fw = (int)(pixbuf.width - x0); - } - - if(fh > (int)(pixbuf.height - y0)) - { - fh = (int)(pixbuf.height - y0); - } - - if((fw < 1) || (fh < 1)) - { - return; - } - - if(image.hasAlpha()) - { - if(!image.line(0)) - { - for(std::size_t y = -1 * std::min(0, y0); y < (std::size_t)fh; ++y) - { - for(std::size_t x = -1 * std::min(0, x0); x < (std::size_t)fw; ++x) - { - assert(x >= 0); - assert(y >= 0); - assert(x < image.width()); - assert(y < image.height()); - auto& c = image.getPixel(x, y); - - assert(x0 + x >= 0); - assert(y0 + y >= 0); - assert(x0 + x < pixbuf.width); - assert(y0 + y < pixbuf.height); - - pixbuf.addPixel(x0 + x, y0 + y, c); - } - } - } - else - { - std::size_t x_offset = -1 * std::min(0, x0); - for(std::size_t y = -1 * std::min(0, y0); y < (std::size_t)fh; ++y) - { - pixbuf.blendLine(x_offset + x0, y + y0, image.line(y, x_offset), - std::min((int)image.width(), fw - (int)x_offset)); - } - } - } - else - { - std::size_t x_offset = -1 * std::min(0, x0); - for(std::size_t y = -1 * std::min(0, y0); y < (std::size_t)fh; ++y) - { - pixbuf.writeLine(x_offset + x0, y + y0, image.line(y, x_offset), - std::min((int)image.width(), fw - (int)x_offset)); - } - } -} - -void Painter::drawRestrictedImage(int x0, int y0, - const Colour& restriction_colour, - const Drawable& image) -{ - int fw = image.width(); - int fh = image.height(); - - // Make sure we don't try to draw outside the pixbuf. - if(fw > (int)(pixbuf.width - x0)) - { - fw = (int)(pixbuf.width - x0); - } - - if(fh > (int)(pixbuf.height - y0)) - { - fh = (int)(pixbuf.height - y0); - } - - if((fw < 1) || (fh < 1)) - { - return; - } - - for(std::size_t y = -1 * std::min(0, y0); y < (std::size_t)fh; ++y) - { - for(std::size_t x = -1 * std::min(0, x0); x < (std::size_t)fw; ++x) - { - assert(x >= 0); - assert(y >= 0); - assert(x < image.width()); - assert(y < image.height()); - auto& c = image.getPixel(x, y); - - assert(x0 + x >= 0); - assert(y0 + y >= 0); - assert(x0 + x < pixbuf.width); - assert(y0 + y < pixbuf.height); - - if(c == restriction_colour) - { - pixbuf.setPixel(x0 + x, y0 + y, c); - } - } - } -} - -void Painter::drawImageStretched(int x0, int y0, const Drawable& image, - int width, int height) -{ - float fw = image.width(); - float fh = image.height(); - - // Make sure we don't try to draw outside the pixbuf. - if(width > (int)(pixbuf.width - x0)) - { - width = pixbuf.width - x0; - } - - if(height > (int)(pixbuf.height - y0)) - { - height = pixbuf.height - y0; - } - - if((width < 1) || (height < 1)) - { - return; - } - - for(int y = -1 * std::min(0, y0); y < height; ++y) - { - for(int x = -1 * std::min(0, x0); x < width; ++x) - { - int lx = ((float)x / (float)width) * fw; - int ly = ((float)y / (float)height) * fh; - auto& c = image.getPixel(lx, ly); - pixbuf.addPixel(x0 + x, y0 + y, c); - } - } -} - -void Painter::drawBox(int x, int y, const Box& box, int width, int height) -{ - int dx = x; - int dy = y; - - // Top: - drawImage(dx, dy, *box.topLeft); - - dx += box.topLeft->width(); - if((dx < 0) || (dy < 0)) - { - return; - } - - drawImageStretched(dx, dy, *box.top, - width - box.topRight->width() - box.topLeft->width(), - box.top->height()); - - dx = x + width - box.topRight->width(); - if((dx < 0) || (dy < 0)) - { - return; - } - - drawImage(dx, dy, *box.topRight); - - // Center: - dy = y + box.topLeft->height(); - dx = x + box.left->width(); - if((dx < 0) || (dy < 0)) - { - return; - } - - drawImageStretched(dx, dy, *box.center, - width - box.left->width() - box.right->width(), - height - box.topLeft->height() - box.bottomLeft->height()); - - // Mid: - dx = x; - dy = y + box.topLeft->height(); - if((dx < 0) || (dy < 0)) - { - return; - } - - drawImageStretched(dx, dy, *box.left, box.left->width(), - height - box.topLeft->height() - box.bottomLeft->height()); - - dx = x + width - box.right->width(); - dy = y + box.topRight->height(); - if((dx < 0) || (dy < 0)) - { - return; - } - - drawImageStretched(dx, dy, *box.right, - box.right->width(), - height - box.topRight->height() - box.bottomRight->height()); - - // Bottom: - dx = x; - dy = y + height - box.bottomLeft->height(); - if((dx < 0) || (dy < 0)) - { - return; - } - - drawImage(dx, dy, *box.bottomLeft); - - dx += box.bottomLeft->width(); - if((dx < 0) || (dy < 0)) - { - return; - } - - drawImageStretched(dx, dy, *box.bottom, - width - box.bottomRight->width() - box.bottomLeft->width(), - box.bottom->height()); - - dx = x + width - box.bottomRight->width(); - if((dx < 0) || (dy < 0)) - { - return; - } - - drawImage(dx, dy, *box.bottomRight); -} - -void Painter::drawBar(int x, int y, const Bar& bar, int width, int height) -{ - if(width < ((int)bar.left->width() + (int)bar.right->width() + 1)) - { - width = bar.left->width() + bar.right->width() + 1; - } - - drawImageStretched(x, y, *bar.left, bar.left->width(), height); - - drawImageStretched(x + bar.left->width(), y, *bar.center, - width - bar.left->width() - bar.right->width(), height); - - drawImageStretched(x + width - bar.left->width(), y, *bar.right, - bar.right->width(), height); -} - -} // GUI:: -- cgit v1.2.3