55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
// Copyright (c) Charles J. Cliffe
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// SPDX-License-Identifier: GPL-2.0+
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#include "MeterContext.h"
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#include "MeterCanvas.h"
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#include "ColorTheme.h"
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MeterContext::MeterContext(MeterCanvas *canvas, wxGLContext *sharedContext, wxGLContextAttrs *ctxAttrs) :
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PrimaryGLContext(canvas, sharedContext, ctxAttrs) {
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}
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void MeterContext::DrawBegin() {
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glDisable(GL_CULL_FACE);
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glDisable(GL_DEPTH_TEST);
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glClearColor(ThemeMgr::mgr.currentTheme->generalBackground.r, ThemeMgr::mgr.currentTheme->generalBackground.g, ThemeMgr::mgr.currentTheme->generalBackground.b, 1.0);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glDisable(GL_TEXTURE_2D);
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}
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void MeterContext::Draw(float r, float g, float b, float a, float level) {
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glEnable(GL_BLEND);
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glBlendFunc(GL_ONE, GL_ONE);
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glBegin(GL_QUADS);
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glColor4f(r*0.65,g*0.65,b*0.65,a);
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glVertex2f(-1.0, -1.0 + 2.0 * level);
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glVertex2f(-1.0, -1.0);
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glColor4f(r,g,b,a);
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glVertex2f(0.0, -1.0);
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glVertex2f(0.0, -1.0 + 2.0 * level);
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glColor4f(r,g,b,a);
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glVertex2f(0.0, -1.0 + 2.0 * level);
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glVertex2f(0.0, -1.0);
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glColor4f(r*0.65,g*0.65,b*0.65,a*0.65);
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glVertex2f(1.0, -1.0);
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glVertex2f(1.0, -1.0 + 2.0 * level);
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glEnd();
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glDisable(GL_BLEND);
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}
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void MeterContext::DrawEnd() {
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// glFlush();
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// CheckGLError();
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}
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