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143 lines
3.9 KiB
C++
143 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sts=4 et sw=4 tw=99:
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*
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* gFooBar Implementation
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*
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* Copyright (c) 2011-2014 Mark Watkins <jedimark@users.sourceforge.net>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of the Linux
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* distribution for more details. */
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#include "Graphs/gFooBar.h"
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#include <cmath>
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#include "Graphs/gGraph.h"
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#include "Graphs/gVertexBuffer.h"
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#include "Graphs/gYAxis.h"
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gShadowArea::gShadowArea(QColor shadow_color, QColor line_color)
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: Layer(NoChannel), m_shadow_color(shadow_color), m_line_color(line_color)
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{
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addVertexBuffer(quads = new gVertexBuffer(20, GL_QUADS));
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addVertexBuffer(lines = new gVertexBuffer(20, GL_LINES));
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quads->forceAntiAlias(true);
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lines->setAntiAlias(true);
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lines->setSize(2);
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}
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gShadowArea::~gShadowArea()
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{
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}
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void gShadowArea::paint(gGraph &w, int left, int top, int width, int height)
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{
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if (!m_visible) { return; }
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double xx = w.max_x - w.min_x;
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if (xx == 0) {
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return;
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}
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int start_px = left - 1;
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int end_px = left + width;
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//float h=top;
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double rmx = w.rmax_x - w.rmin_x;
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double px = ((1.0 / rmx) * (w.min_x - w.rmin_x)) * width;
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double py = ((1.0 / rmx) * (w.max_x - w.rmin_x)) * width;
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quads->add(start_px, top, start_px, top + height, start_px + px, top + height, start_px + px, top,
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m_shadow_color.rgba());
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quads->add(start_px + py, top, start_px + py, top + height, end_px, top + height, end_px, top,
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m_shadow_color.rgba());
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lines->add(start_px + px, top, start_px + py, top, m_line_color.rgba());
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lines->add(start_px + px, top + height + 1, start_px + py, top + height + 1, m_line_color.rgba());
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}
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gFooBar::gFooBar(int offset, QColor handle_color, QColor line_color)
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: Layer(NoChannel), m_offset(offset), m_handle_color(handle_color), m_line_color(line_color)
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{
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}
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gFooBar::~gFooBar()
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{
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}
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void gFooBar::paint(gGraph &w, int left, int top, int width, int height)
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{
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Q_UNUSED(top);
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Q_UNUSED(left);
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Q_UNUSED(width);
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Q_UNUSED(height);
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if (!m_visible) { return; }
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double xx = w.max_x - w.min_x;
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if (xx == 0) {
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return;
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}
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//int start_px=left;
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//int end_px=left+width;
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//float h=top;
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/* glLineWidth(1);
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glBegin(GL_LINES);
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w.qglColor(m_line_color);
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glVertex2f(start_px, h);
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glVertex2f(start_px+width, h);
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glEnd();
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double rmx=w.rmax_x-w.rmin_x;
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double px=((1/rmx)*(w.min_x-w.rmin_x))*width;
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double py=((1/rmx)*(w.max_x-w.rmin_x))*width;
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int extra=0;
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if (fabs(px-py)<2) extra=2;
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int hh=25;
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glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
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glEnable(GL_BLEND);
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glBegin(GL_QUADS);
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w.qglColor(m_handle_color);
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glVertex2f(start_px+px-extra,top-hh);
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glVertex2f(start_px+py+extra,top-hh);
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//glColor4ub(255,255,255,128);
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glColor4ub(255,255,255,128);
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glVertex2f(start_px+py+extra,top-hh/2.0);
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glVertex2f(start_px+px-extra,top-hh/2.0);
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// glColor4ub(255,255,255,128);
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glColor4ub(255,255,255,128);
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glVertex2f(start_px+px-extra,top-hh/2.0);
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glVertex2f(start_px+py+extra,top-hh/2.0);
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w.qglColor(m_handle_color);
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// glColor4ub(192,192,192,128);
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glVertex2f(start_px+py+extra,h);
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glVertex2f(start_px+px-extra,h);
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glEnd();
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glDisable(GL_BLEND);
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w.qglColor(m_handle_color);
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glBegin(GL_LINE_LOOP);
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glVertex2f(start_px+px-extra,top-hh);
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glVertex2f(start_px+py+extra,top-hh);
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glVertex2f(start_px+py+extra,h);
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glVertex2f(start_px+px-extra,h);
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glEnd();
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glLineWidth(3);
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glBegin(GL_LINES);
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w.qglColor(m_handle_color);
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glVertex2f(start_px+px-extra,h);
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glVertex2f(start_px+py+extra,h);
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glEnd();
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glLineWidth(1); */
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}
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